首页 > 最新文献

Molecular immunology最新文献

英文 中文
Investigating the role of SMOX in rheumatoid arthritis 探讨SMOX在类风湿关节炎中的作用。
IF 3 3区 医学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2026-01-01 DOI: 10.1016/j.molimm.2025.11.018
Zuning Jiang , Ruojia Zhang , Ya Han , Ruiyao Sun , Mingze Kong , Yuang Zhang , Junling Li , Guanhua Song , Li Qiao , Lin Wang
Rheumatoid arthritis (RA) is pathologically marked by joint inflammation and damage. Although the association between spermidine and RA has been recognized, the precise contribution of spermine oxidase (SMOX)-the enzyme catalyzing spermidine synthesis-to RA pathogenesis remains undefined. It’s observed in this study that SMOX was responsible for inflammatory stimuli that its expression increased obviously when RA-associated fibroblast-like synoviocytes (FLSs) were challenged by inflammatory factors. Functionally, silencing SMOX could inhibit migration, invasion, and cytokine production, but induced apoptosis of RA-FLS. Moreover, inhibition of SMOX using JNJ-9350 yielded anti-inflammatory effects comparable to those achieved by gene silencing in RA-FLS. In vivo experiments demonstrated that JNJ-9350 could effectively reduce the severity of arthritis, minimize histopathological damage, and prevent bone erosion in collagen antibody-induced arthritis (CAIA) mice. The present results indicate that SMOX is implicated in the development of RA and suggest that targeting SMOX could be a novel treatment strategy.
类风湿性关节炎(RA)的病理特征是关节炎症和损伤。虽然亚精胺与RA之间的关系已被确认,但精胺氧化酶(SMOX)-催化亚精胺合成的酶-在RA发病机制中的确切作用仍不清楚。本研究发现,SMOX参与炎症刺激,当ra相关成纤维细胞样滑膜细胞(FLSs)受到炎症因子攻击时,其表达明显增加。功能上,沉默SMOX可抑制RA-FLS的迁移、侵袭和细胞因子的产生,但可诱导RA-FLS凋亡。此外,使用JNJ-9350抑制SMOX产生的抗炎作用与在RA-FLS中基因沉默所达到的效果相当。体内实验表明,JNJ-9350能有效减轻胶原抗体诱导关节炎(CAIA)小鼠关节炎的严重程度,减轻组织病理学损伤,防止骨侵蚀。目前的结果表明,SMOX与RA的发展有关,并提示靶向SMOX可能是一种新的治疗策略。
{"title":"Investigating the role of SMOX in rheumatoid arthritis","authors":"Zuning Jiang ,&nbsp;Ruojia Zhang ,&nbsp;Ya Han ,&nbsp;Ruiyao Sun ,&nbsp;Mingze Kong ,&nbsp;Yuang Zhang ,&nbsp;Junling Li ,&nbsp;Guanhua Song ,&nbsp;Li Qiao ,&nbsp;Lin Wang","doi":"10.1016/j.molimm.2025.11.018","DOIUrl":"10.1016/j.molimm.2025.11.018","url":null,"abstract":"<div><div>Rheumatoid arthritis (RA) is pathologically marked by joint inflammation and damage. Although the association between spermidine and RA has been recognized, the precise contribution of spermine oxidase (SMOX)-the enzyme catalyzing spermidine synthesis-to RA pathogenesis remains undefined. It’s observed in this study that SMOX was responsible for inflammatory stimuli that its expression increased obviously when RA-associated fibroblast-like synoviocytes (FLSs) were challenged by inflammatory factors. Functionally, silencing SMOX could inhibit migration, invasion, and cytokine production, but induced apoptosis of RA-FLS. Moreover, inhibition of SMOX using JNJ-9350 yielded anti-inflammatory effects comparable to those achieved by gene silencing in RA-FLS. In vivo experiments demonstrated that JNJ-9350 could effectively reduce the severity of arthritis, minimize histopathological damage, and prevent bone erosion in collagen antibody-induced arthritis (CAIA) mice. The present results indicate that SMOX is implicated in the development of RA and suggest that targeting SMOX could be a novel treatment strategy.</div></div>","PeriodicalId":18938,"journal":{"name":"Molecular immunology","volume":"189 ","pages":"Pages 235-246"},"PeriodicalIF":3.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145900285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
CXCL2-TLR4 axis activates NETs by accelerating autophagy through ATG7 to promote the progression of idiopathic interstitial pneumonia CXCL2-TLR4轴通过ATG7加速自噬激活NETs,促进特发性间质性肺炎的进展。
IF 3 3区 医学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-12-23 DOI: 10.1016/j.molimm.2025.12.005
Jianlin He, Jue Li, Min Bai, Jie Yang

Objective

This study aimed to elucidate the molecular mechanisms through which CXCL2 contributes to the pathogenesis of idiopathic interstitial pneumonia (IIP).

Methods

Neutrophils were isolated, and the formation of neutrophil extracellular traps (NETs) was assessed after CXCL2 treatment. Cellular concentrations of cell-free DNA (cf-DNA) were quantified via a cf-DNA/NET kit. Additionally, an enzyme-linked immunosorbent assay (ELISA) was used to measure the expression levels of IL-6, TNF-α, and LL-37. Western blot analysis was used to measure the levels of LC3-II, LC3-I, citrullinated histone H3 (citH3), myeloperoxidase (MPO), and elastase. Immunohistochemistry was conducted to measure cit H3 levels. Pathological alterations in the lung tissue were examined via microscopic hemosiderin and eosin staining.

Results

CXCL2 treatment significantly increased the cellular expression levels of cf-DNA, IL-6, TNF-α, and LL-37, as well as cit H3 and MPO, which are markers of NETs. Furthermore, CXCL2 treatment induced a substantial increase in cellular autophagy. Additionally, CXCL2 treatment led to marked upregulation of TLR4 expression and further elevation of autophagy levels, accompanied by increases in cf-DNA, IL-6, TNF-α, and LL-37 expression. Inhibition of TLR4 expression significantly reduced the levels of these factors. Moreover, the CXCL2-induced upregulation of cf-DNA, IL-6, TNF-α, LL-37, cit H3, and MPO was notably suppressed following the knockdown of ATG7. In IIP murine models, there was a significant upregulation of cf-DNA, IL-6, TNF-α, and LL-37, as well as an increase in cit H3 and MPO expression. Lung tissue analysis revealed inflammatory cell infiltration, alveolar wall thickening, tissue congestion, and edema. Inhibition of CXCL2 and TLR4 expression significantly ameliorated these pathological changes.

Conclusions

The CXCL2TLR4 axis may facilitate NET activation by promoting autophagy via ATG7, thereby contributing to IIP progression.
目的:探讨CXCL2参与特发性间质性肺炎(IIP)发病的分子机制。方法:分离中性粒细胞,观察CXCL2处理后中性粒细胞胞外陷阱(NETs)的形成。通过cf-DNA/NET试剂盒定量细胞游离DNA (cf-DNA)浓度。此外,采用酶联免疫吸附试验(ELISA)检测IL-6、TNF-α和LL-37的表达水平。Western blot检测LC3-II、LC3-I、瓜氨酸组蛋白H3 (citH3)、髓过氧化物酶(MPO)和弹性酶的水平。免疫组化检测cit H3水平。显微镜下用含铁血黄素和伊红染色观察肺组织的病理改变。结果:CXCL2显著提高了NETs标志物cf-DNA、IL-6、TNF-α、LL-37以及cit H3、MPO的表达水平。此外,CXCL2处理诱导细胞自噬显著增加。此外,CXCL2处理导致TLR4表达显著上调,自噬水平进一步升高,同时cf-DNA、IL-6、TNF-α和LL-37表达升高。抑制TLR4的表达可显著降低这些因子的水平。此外,cxcl2诱导的cf-DNA、IL-6、TNF-α、LL-37、cit H3和MPO的上调在ATG7下调后被显著抑制。在IIP小鼠模型中,cf-DNA、IL-6、TNF-α和LL-37的表达显著上调,cit H3和MPO的表达增加。肺组织分析显示炎症细胞浸润,肺泡壁增厚,组织充血和水肿。抑制CXCL2和TLR4的表达可显著改善这些病理变化。结论:CXCL2TLR4轴可能通过ATG7促进自噬,从而促进NET激活,从而促进IIP进展。
{"title":"CXCL2-TLR4 axis activates NETs by accelerating autophagy through ATG7 to promote the progression of idiopathic interstitial pneumonia","authors":"Jianlin He,&nbsp;Jue Li,&nbsp;Min Bai,&nbsp;Jie Yang","doi":"10.1016/j.molimm.2025.12.005","DOIUrl":"10.1016/j.molimm.2025.12.005","url":null,"abstract":"<div><h3>Objective</h3><div>This study aimed to elucidate the molecular mechanisms through which CXCL2 contributes to the pathogenesis of idiopathic interstitial pneumonia (IIP).</div></div><div><h3>Methods</h3><div>Neutrophils were isolated, and the formation of neutrophil extracellular traps (NETs) was assessed after CXCL2 treatment. Cellular concentrations of cell-free DNA (cf-DNA) were quantified via a cf-DNA/NET kit. Additionally, an enzyme-linked immunosorbent assay (ELISA) was used to measure the expression levels of IL-6, TNF-α, and LL-37. Western blot analysis was used to measure the levels of LC3-II, LC3-I, citrullinated histone H3 (citH3), myeloperoxidase (MPO), and elastase. Immunohistochemistry was conducted to measure cit H3 levels. Pathological alterations in the lung tissue were examined via microscopic hemosiderin and eosin staining.</div></div><div><h3>Results</h3><div>CXCL2 treatment significantly increased the cellular expression levels of cf-DNA, IL-6, TNF-α, and LL-37, as well as cit H3 and MPO, which are markers of NETs. Furthermore, CXCL2 treatment induced a substantial increase in cellular autophagy. Additionally, CXCL2 treatment led to marked upregulation of TLR4 expression and further elevation of autophagy levels, accompanied by increases in cf-DNA, IL-6, TNF-α, and LL-37 expression. Inhibition of TLR4 expression significantly reduced the levels of these factors. Moreover, the CXCL2-induced upregulation of cf-DNA, IL-6, TNF-α, LL-37, cit H3, and MPO was notably suppressed following the knockdown of ATG7. In IIP murine models, there was a significant upregulation of cf-DNA, IL-6, TNF-α, and LL-37, as well as an increase in cit H3 and MPO expression. Lung tissue analysis revealed inflammatory cell infiltration, alveolar wall thickening, tissue congestion, and edema. Inhibition of CXCL2 and TLR4 expression significantly ameliorated these pathological changes.</div></div><div><h3>Conclusions</h3><div>The CXCL2<img>TLR4 axis may facilitate NET activation by promoting autophagy via ATG7, thereby contributing to IIP progression.</div></div>","PeriodicalId":18938,"journal":{"name":"Molecular immunology","volume":"189 ","pages":"Pages 226-234"},"PeriodicalIF":3.0,"publicationDate":"2025-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145828042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Restoring NR4A3 function in neutrophils alleviates sepsis by limiting NF-κB-dependent NETs formation and organ damage 恢复中性粒细胞NR4A3功能可通过限制NF-κ b依赖性NETs的形成和器官损伤来减轻败血症。
IF 3 3区 医学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-12-23 DOI: 10.1016/j.molimm.2025.11.013
Si Li , Chengwu Liu , Caixia Wu , Zhaoming Liu

Background

Sepsis, a life-threatening condition, involves excessive neutrophil extracellular traps (NETs) contributing to organ damage. The role of orphan nuclear receptor NR4A3 in modulating neutrophil NETosis via NF-κB during sepsis is poorly understood. This study aimed to elucidate NR4A3's function and therapeutic potential.

Methods

Single-cell RNA sequencing analysis was performed using GSE175453 and GSE167363 from GEO database, involving PBMCs from septic patients and controls. In vitro, ATRA-differentiated HL-60 neutrophils with NR4A3 overexpression were LPS-stimulated. In vivo, a cecal ligation and puncture (CLP) sepsis mouse model received AAV-mediated NR4A3 overexpression. Key readouts included NR4A3 expression, NF-κB activation, NETs markers (NE, CitH3, PADI4, MPO-DNA), inflammatory cytokines (TNF-α, IL-1β, IL-6), ROS generation, and intestinal tissue pathology.

Results

scRNA-seq analysis revealed significant NR4A3 downregulation in neutrophils from septic patients. In vitro, NR4A3 overexpression in neutrophils significantly attenuated LPS-induced NF-κB (p65) activation, NETs formation, inflammatory cytokine production, and ROS generation. In vivo, AAV-mediated NR4A3 overexpression in CLP-induced septic mice ameliorated intestinal inflammation, suppressed p65 phosphorylation and NETs-related markers in the intestine, and reduced systemic inflammatory cytokine levels.

Conclusion

Our findings demonstrate that NR4A3 exerts a protective role in sepsis by inhibiting the NF-κB signaling pathway in neutrophils, thereby suppressing excessive NETs formation and the associated inflammatory cascade. Thus, NR4A3 represents a promising therapeutic target for mitigating NET-driven pathology in sepsis.
背景:脓毒症是一种危及生命的疾病,涉及过量的中性粒细胞胞外陷阱(NETs)导致器官损伤。孤儿核受体NR4A3在脓毒症期间通过NF-κB调节中性粒细胞NETosis中的作用尚不清楚。本研究旨在阐明NR4A3的功能和治疗潜力。方法:使用GEO数据库中的GSE175453和GSE167363进行单细胞RNA测序分析,包括脓毒症患者和对照组的PBMCs。体外,lps刺激atra分化的NR4A3过表达的HL-60中性粒细胞。在体内,aav介导的NR4A3过表达盲肠结扎和穿刺(CLP)脓毒症小鼠模型。关键读数包括NR4A3表达、NF-κB激活、NETs标志物(NE、CitH3、PADI4、MPO-DNA)、炎症因子(TNF-α、IL-1β、IL-6)、ROS生成和肠道组织病理。结果:scRNA-seq分析显示,脓毒症患者中性粒细胞NR4A3明显下调。在体外,NR4A3在中性粒细胞中的过表达显著减弱lps诱导的NF-κB (p65)活化、NETs形成、炎症细胞因子产生和ROS生成。在体内,在clp诱导的脓毒症小鼠中,aav介导的NR4A3过表达改善了肠道炎症,抑制了肠道p65磷酸化和nets相关标志物,降低了全身炎症细胞因子水平。结论:我们的研究结果表明,NR4A3通过抑制中性粒细胞NF-κB信号通路,从而抑制NETs过度形成及相关的炎症级联反应,在脓毒症中发挥保护作用。因此,NR4A3是缓解脓毒症中net驱动病理的一个有希望的治疗靶点。
{"title":"Restoring NR4A3 function in neutrophils alleviates sepsis by limiting NF-κB-dependent NETs formation and organ damage","authors":"Si Li ,&nbsp;Chengwu Liu ,&nbsp;Caixia Wu ,&nbsp;Zhaoming Liu","doi":"10.1016/j.molimm.2025.11.013","DOIUrl":"10.1016/j.molimm.2025.11.013","url":null,"abstract":"<div><h3>Background</h3><div>Sepsis, a life-threatening condition, involves excessive neutrophil extracellular traps (NETs) contributing to organ damage. The role of orphan nuclear receptor NR4A3 in modulating neutrophil NETosis via NF-κB during sepsis is poorly understood. This study aimed to elucidate NR4A3's function and therapeutic potential.</div></div><div><h3>Methods</h3><div>Single-cell RNA sequencing analysis was performed using GSE175453 and GSE167363 from GEO database, involving PBMCs from septic patients and controls. <em>In vitro</em>, ATRA-differentiated HL-60 neutrophils with NR4A3 overexpression were LPS-stimulated. <em>In vivo</em>, a cecal ligation and puncture (CLP) sepsis mouse model received AAV-mediated NR4A3 overexpression. Key readouts included NR4A3 expression, NF-κB activation, NETs markers (NE, CitH3, PADI4, MPO-DNA), inflammatory cytokines (TNF-α, IL-1β, IL-6), ROS generation, and intestinal tissue pathology.</div></div><div><h3>Results</h3><div>scRNA-seq analysis revealed significant NR4A3 downregulation in neutrophils from septic patients. In vitro, NR4A3 overexpression in neutrophils significantly attenuated LPS-induced NF-κB (p65) activation, NETs formation, inflammatory cytokine production, and ROS generation. In vivo, AAV-mediated NR4A3 overexpression in CLP-induced septic mice ameliorated intestinal inflammation, suppressed p65 phosphorylation and NETs-related markers in the intestine, and reduced systemic inflammatory cytokine levels.</div></div><div><h3>Conclusion</h3><div>Our findings demonstrate that NR4A3 exerts a protective role in sepsis by inhibiting the NF-κB signaling pathway in neutrophils, thereby suppressing excessive NETs formation and the associated inflammatory cascade. Thus, NR4A3 represents a promising therapeutic target for mitigating NET-driven pathology in sepsis.</div></div>","PeriodicalId":18938,"journal":{"name":"Molecular immunology","volume":"189 ","pages":"Pages 206-215"},"PeriodicalIF":3.0,"publicationDate":"2025-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145828053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Silence of circPLK1 inhibits NSCLC progression by regulating the miR-1294/SLC16A9 axis circPLK1沉默通过调节miR-1294/SLC16A9轴抑制NSCLC进展。
IF 3 3区 医学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-12-23 DOI: 10.1016/j.molimm.2025.11.020
Chuankui Li, Yifan Yang, Qicai Li, Guowen Wang, Tao Tao, Lixiang Li, Haiwei Sang

Background

Non-small cell lung cancer (NSCLC) is the malignancy with the highest mortality worldwide. Circular RNA polo-like kinase 1 (circPLK1) is a circular RNA that involved in cancer progression. However, the role of circPLK1 in NSCLC requires further investigation.

Methods

The expression of circPLK1 in NSCLC cells was measured by using qRT-PCR. Bioinformatics analysis was performed to identify miRNAs that bind to circPLK1 and the target mRNAs of these miRNAs. Cell viability, proliferation, apoptosis, migration, and invasion were assessed using CCK-8, colony formation, flow cytometry, and Transwell assays, respectively. Protein expression was evaluated by western blotting. Xenograft models were established to verify the regulatory role of circPLK1 in the miR-1294/SLC16A9 axis.

Results

circPLK1 was upregulaterd in NSCLC cells. Silencing circPLK1 markedly inhibited cell viability, proliferation, migration, and invasion, while accelerating apoptosis in NSCLC cells. circPLK1 acted as a sponge for miR-1294 and promoted SLC16A9 expression in NSCLC cells. Knockdown of circPLK1 suppressed tumor growth in NSCLC by regulating the miR-1294/SLC16A9 axis.

Conclusion

circPLK1 silence inhibited the proliferation, migration, and invasion of NSCLC cells by regulating the miR-1294/SLC16A9 axis.
背景:非小细胞肺癌(NSCLC)是世界上死亡率最高的恶性肿瘤。环状RNA polo样激酶1 (circPLK1)是一种参与癌症进展的环状RNA。然而,circPLK1在非小细胞肺癌中的作用有待进一步研究。方法:采用qRT-PCR方法检测circPLK1在非小细胞肺癌细胞中的表达。进行生物信息学分析以鉴定与circPLK1结合的mirna和这些mirna的靶mrna。分别采用CCK-8、集落形成、流式细胞术和Transwell法评估细胞活力、增殖、凋亡、迁移和侵袭。western blotting检测蛋白表达。建立异种移植模型来验证circPLK1在miR-1294/SLC16A9轴中的调节作用。结果:circPLK1在NSCLC细胞中表达上调。沉默circPLK1可显著抑制非小细胞肺癌细胞的活力、增殖、迁移和侵袭,同时加速细胞凋亡。circPLK1作为miR-1294的海绵,促进SLC16A9在NSCLC细胞中的表达。敲低circPLK1通过调节miR-1294/SLC16A9轴抑制非小细胞肺癌的肿瘤生长。结论:circPLK1沉默通过调节miR-1294/SLC16A9轴抑制NSCLC细胞的增殖、迁移和侵袭。
{"title":"Silence of circPLK1 inhibits NSCLC progression by regulating the miR-1294/SLC16A9 axis","authors":"Chuankui Li,&nbsp;Yifan Yang,&nbsp;Qicai Li,&nbsp;Guowen Wang,&nbsp;Tao Tao,&nbsp;Lixiang Li,&nbsp;Haiwei Sang","doi":"10.1016/j.molimm.2025.11.020","DOIUrl":"10.1016/j.molimm.2025.11.020","url":null,"abstract":"<div><h3>Background</h3><div>Non-small cell lung cancer (NSCLC) is the malignancy with the highest mortality worldwide. Circular RNA polo-like kinase 1 (<em>circPLK1</em>) is a circular RNA that involved in cancer progression. However, the role of <em>circPLK1</em> in NSCLC requires further investigation.</div></div><div><h3>Methods</h3><div>The expression of <em>circPLK1</em> in NSCLC cells was measured by using qRT-PCR. Bioinformatics analysis was performed to identify miRNAs that bind to <em>circPLK1</em> and the target mRNAs of these miRNAs. Cell viability, proliferation, apoptosis, migration, and invasion were assessed using CCK-8, colony formation, flow cytometry, and Transwell assays, respectively. Protein expression was evaluated by western blotting. Xenograft models were established to verify the regulatory role of circPLK1 in the miR-1294/SLC16A9 axis.</div></div><div><h3>Results</h3><div><em>circPLK1</em> was upregulaterd in NSCLC cells. Silencing <em>circPLK1</em> markedly inhibited cell viability, proliferation, migration, and invasion, while accelerating apoptosis in NSCLC cells. <em>circPLK1</em> acted as a sponge for <em>miR-1294</em> and promoted <em>SLC16A9</em> expression in NSCLC cells. Knockdown of <em>circPLK1</em> suppressed tumor growth in NSCLC by regulating the <em>miR-1294</em>/<em>SLC16A9</em> axis.</div></div><div><h3>Conclusion</h3><div><em>circPLK1</em> silence inhibited the proliferation, migration, and invasion of NSCLC cells by regulating the <em>miR-1294</em>/<em>SLC16A9</em> axis.</div></div>","PeriodicalId":18938,"journal":{"name":"Molecular immunology","volume":"189 ","pages":"Pages 216-225"},"PeriodicalIF":3.0,"publicationDate":"2025-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145828005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Indole-3-propionic acid exerts radio-protective effects by modulating Wnt1/STAT3 pathway to alleviate oxidative stress and neuroinflammation in microglia 吲哚-3-丙酸通过调节Wnt1/STAT3通路,发挥放射保护作用,减轻小胶质细胞氧化应激和神经炎症。
IF 3 3区 医学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-12-22 DOI: 10.1016/j.molimm.2025.12.011
Yue Si , Biying Zhang , Jingjing Wei , Mengyun Li , Yong Liu , Hongwei Ma
Radiation-induced delayed brain injury (RIBI) refers to structural and functional brain alterations that develop several months to years after exposure to ionizing radiation (IR). Microglia activation-mediated neuroinflammation, as well as oxidative stress, constitutes a key factor contributing to RIBI. Indole-3-propionic acid (IPA) is an indole metabolite specifically produced by the tryptophan metabolism of gut microbiota. It can cross the blood-brain barrier and modulate the central nervous system (CNS). In order to explore the protective mechanism of IPA on IR-induced cerebral function, we studied the effect of IPA on the activation of BV2 microglia in vitro. The experimental results show that IPA can suppress the oxidative stress and inflammation of microglia, which is represented as upregulating the expression of antioxidant genes (Hmox1, Ho-1, and Nqo1), and reducing the mRNA levels of pro-inflammatory factors (Tnf-α, Il-6, Inos, and Nox2). This protective effect may be related to the inhibition of Wnt1 expression and STAT3 phosphorylation (p-STAT3 Y705; p = 0.0008) in microglia. Additionally, it was found that IPA could alleviate the IR-induced neuroinflammation and synaptic damage of mice, as evidenced by reduced serum TNF-α and IL-6 levels and widened postsynaptic density (PSD) thickness (p = 0.0239). Collectively, this study provides novel insights into the potential application of IPA in the therapeutic intervention of radiation-induced brain injury.
辐射诱发的延迟性脑损伤(RIBI)是指暴露于电离辐射(IR)数月至数年后发生的大脑结构和功能改变。小胶质细胞激活介导的神经炎症以及氧化应激是导致RIBI的关键因素。吲哚-3-丙酸(IPA)是肠道菌群色氨酸代谢特异性产生的吲哚代谢物。它可以穿过血脑屏障,调节中枢神经系统。为了探讨IPA对ir诱导的脑功能的保护机制,我们在体外研究了IPA对BV2小胶质细胞激活的影响。实验结果表明,IPA可以抑制小胶质细胞的氧化应激和炎症反应,表现为上调抗氧化基因(Hmox1、Ho-1、Nqo1)的表达,降低促炎因子(Tnf-α、Il-6、Inos、Nox2)的mRNA水平。这种保护作用可能与抑制小胶质细胞中Wnt1表达和STAT3磷酸化(p-STAT3 Y705; p = 0.0008)有关。此外,我们发现IPA可以减轻ir诱导的小鼠神经炎症和突触损伤,表现为降低血清TNF-α和IL-6水平,扩大突触后密度(PSD)厚度(p = 0.0239)。总的来说,本研究为IPA在辐射性脑损伤治疗干预中的潜在应用提供了新的见解。
{"title":"Indole-3-propionic acid exerts radio-protective effects by modulating Wnt1/STAT3 pathway to alleviate oxidative stress and neuroinflammation in microglia","authors":"Yue Si ,&nbsp;Biying Zhang ,&nbsp;Jingjing Wei ,&nbsp;Mengyun Li ,&nbsp;Yong Liu ,&nbsp;Hongwei Ma","doi":"10.1016/j.molimm.2025.12.011","DOIUrl":"10.1016/j.molimm.2025.12.011","url":null,"abstract":"<div><div>Radiation-induced delayed brain injury (RIBI) refers to structural and functional brain alterations that develop several months to years after exposure to ionizing radiation (IR). Microglia activation-mediated neuroinflammation, as well as oxidative stress, constitutes a key factor contributing to RIBI. Indole-3-propionic acid (IPA) is an indole metabolite specifically produced by the tryptophan metabolism of gut microbiota. It can cross the blood-brain barrier and modulate the central nervous system (CNS). In order to explore the protective mechanism of IPA on IR-induced cerebral function, we studied the effect of IPA on the activation of BV2 microglia <em>in vitro</em>. The experimental results show that IPA can suppress the oxidative stress and inflammation of microglia, which is represented as upregulating the expression of antioxidant genes (<em>Hmox1</em>, <em>Ho-1</em>, and <em>Nqo1</em>), and reducing the mRNA levels of pro-inflammatory factors (<em>Tnf-α</em>, <em>Il-6</em>, <em>Inos</em>, and <em>Nox2</em>). This protective effect may be related to the inhibition of Wnt1 expression and STAT3 phosphorylation (p-STAT3 Y705; <em>p</em> = 0.0008) in microglia. Additionally, it was found that IPA could alleviate the IR-induced neuroinflammation and synaptic damage of mice, as evidenced by reduced serum TNF-α and IL-6 levels and widened postsynaptic density (PSD) thickness (<em>p</em> = 0.0239). Collectively, this study provides novel insights into the potential application of IPA in the therapeutic intervention of radiation-induced brain injury.</div></div>","PeriodicalId":18938,"journal":{"name":"Molecular immunology","volume":"189 ","pages":"Pages 192-205"},"PeriodicalIF":3.0,"publicationDate":"2025-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145820140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The genetic characteristics of Pahepcidin1 and Pahepcidin2 in silver pomfret (Pampus argenteus) and their antibacterial functions in innate immunity 银鲳鱼Pahepcidin1和Pahepcidin2的遗传特征及其在先天免疫中的抗菌功能
IF 3 3区 医学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-12-18 DOI: 10.1016/j.molimm.2025.12.004
Qian Fang , Ruoxin Wang , Xiumei Liu , Yajun Wang , Qingping Xie , Chunyang Guo , Mingzhe Yuan , Xubo Wang
Hepcidins are a class of cysteine-rich antimicrobial peptides that exert significant impacts in response to a variety of pathogens. In this study, two hepcidins were identified from silver pomfret (Pampus argenteus), namely Pahepcidin1 and Pahepcidin2. Our findings revealed that Pahepcidin1 consists of a 267 open reading frame (ORF) encoding 91 amino acids, while Pahepcidin2 consists of 246 bp ORF encoding 81 amino acids. Sequence comparison between Pahepcidins and other homologous genes demonstrated the presence of eight conserved cysteines in the C-terminus region of Pahepcidin1 and six cysteine residues in the C-terminus region of Pahepcidin2. Phylogenetic analysis indicated that both Pahepcidin1 and Pahepcidin2 clustered with other fish homologues, respectively. The results of tissue-specific expression analysis showed that Pahepcidins exhibited the highest expression level in the liver; moreover, the expression level of Pahepcidin1 in silver pomfret liver cells (PaL cells) was also significantly increased after stimulation with lipopolysaccharide (LPS), polyinosinic-polycytidylic acid (poly I:C), and Staphylococcus aureus (S. aureus). Meanwhile, this study verified the antibacterial function of recombinant Pahepcidin1, and the results indicated that it possessed broad antibacterial activity against both Gram-positive bacteria (S. aureus) and Gram-negative bacteria (Edwardsiella tarda). In addition, the overexpression of Pahepcidin1 could significantly alter the transcriptional levels of key genes in the NF-κB pathway and downstream immune-related genes. In vivo validation via Vibrio parahaemolyticus challenge showed that Pahepcidin1 expression in silver pomfret liver was significantly upregulated at 3 h and peaked at 6 h, then downregulated to below the baseline from 12 h to 48 h. These results suggested that Pahepcidin1 might play an essential role in the innate immune system modulation of silver pomfret, providing valuable insights into understanding the antimicrobial immune mechanism of this species.
Hepcidins是一类富含半胱氨酸的抗菌肽,在对多种病原体的反应中发挥重要作用。本研究从银鲳鱼(Pampus argenteus)中鉴定出两种hepcidin,即Pahepcidin1和Pahepcidin2。结果表明,Pahepcidin1由267个开放阅读框(ORF)组成,编码91个氨基酸,而Pahepcidin2由246个 bp ORF组成,编码81个氨基酸。Pahepcidins与其他同源基因的序列比较表明,在Pahepcidin1的c端区存在8个保守的半胱氨酸,在Pahepcidin2的c端区存在6个半胱氨酸残基。系统发育分析表明,Pahepcidin1和Pahepcidin2分别与其他鱼类同源物聚集。组织特异性表达分析结果显示Pahepcidins在肝脏中表达量最高;此外,经脂多糖(LPS)、多肌苷-多胞酸(poly I:C)和金黄色葡萄球菌(S. aureus)刺激后,Pahepcidin1在鲳鱼肝细胞(PaL细胞)中的表达水平也显著升高。同时,本研究验证了重组Pahepcidin1的抑菌功能,结果表明其对革兰氏阳性菌(金黄色葡萄球菌)和革兰氏阴性菌(迟缓爱德华菌)均具有广泛的抑菌活性。此外,Pahepcidin1过表达可显著改变NF-κB通路关键基因及下游免疫相关基因的转录水平。通过副溶血性弧菌攻击的体内验证表明,Pahepcidin1在银鲳鱼肝脏中的表达在3 h时显著上调,在6 h时达到峰值,然后在12 h至48 h时下调至低于基线。这些结果提示Pahepcidin1可能在鲳鱼先天免疫系统调节中发挥重要作用,为了解该物种的抗菌免疫机制提供了有价值的见解。
{"title":"The genetic characteristics of Pahepcidin1 and Pahepcidin2 in silver pomfret (Pampus argenteus) and their antibacterial functions in innate immunity","authors":"Qian Fang ,&nbsp;Ruoxin Wang ,&nbsp;Xiumei Liu ,&nbsp;Yajun Wang ,&nbsp;Qingping Xie ,&nbsp;Chunyang Guo ,&nbsp;Mingzhe Yuan ,&nbsp;Xubo Wang","doi":"10.1016/j.molimm.2025.12.004","DOIUrl":"10.1016/j.molimm.2025.12.004","url":null,"abstract":"<div><div>Hepcidins are a class of cysteine-rich antimicrobial peptides that exert significant impacts in response to a variety of pathogens. In this study, two hepcidins were identified from silver pomfret (<em>Pampus argenteus</em>), namely <em>Pahepcidin1</em> and <em>Pahepcidin2</em>. Our findings revealed that <em>Pahepcidin1</em> consists of a 267 open reading frame (ORF) encoding 91 amino acids, while <em>Pahepcidin2</em> consists of 246 bp ORF encoding 81 amino acids. Sequence comparison between <em>Pahepcidins</em> and other homologous genes demonstrated the presence of eight conserved cysteines in the C-terminus region of Pahepcidin1 and six cysteine residues in the C-terminus region of Pahepcidin2. Phylogenetic analysis indicated that both Pahepcidin1 and Pahepcidin2 clustered with other fish homologues, respectively. The results of tissue-specific expression analysis showed that <em>Pahepcidins</em> exhibited the highest expression level in the liver; moreover, the expression level of <em>Pahepcidin1</em> in silver pomfret liver cells (PaL cells) was also significantly increased after stimulation with lipopolysaccharide (LPS), polyinosinic-polycytidylic acid (poly I:C), and <em>Staphylococcus aureus</em> (<em>S. aureus</em>). Meanwhile, this study verified the antibacterial function of recombinant Pahepcidin1, and the results indicated that it possessed broad antibacterial activity against both Gram-positive bacteria (<em>S. aureus</em>) and Gram-negative bacteria (<em>Edwardsiella tarda</em>). In addition, the overexpression of Pahepcidin1 could significantly alter the transcriptional levels of key genes in the NF-κB pathway and downstream immune-related genes. In vivo validation via <em>Vibrio parahaemolyticus</em> challenge showed that <em>Pahepcidin1</em> expression in silver pomfret liver was significantly upregulated at 3 h and peaked at 6 h, then downregulated to below the baseline from 12 h to 48 h. These results suggested that <em>Pahepcidin1</em> might play an essential role in the innate immune system modulation of silver pomfret, providing valuable insights into understanding the antimicrobial immune mechanism of this species.</div></div>","PeriodicalId":18938,"journal":{"name":"Molecular immunology","volume":"189 ","pages":"Pages 163-173"},"PeriodicalIF":3.0,"publicationDate":"2025-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145787140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Isoimperatorin inhibits cell proliferation and induces apoptosis via regulating PI3K/AKT pathway in acute lymphoblastic leukemia 异欧前胡素通过调控PI3K/AKT通路抑制急性淋巴细胞白血病细胞增殖和诱导细胞凋亡
IF 3 3区 医学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-12-18 DOI: 10.1016/j.molimm.2025.12.009
Jing Xiao , Yan Wang

Objectives

This study aims to explore whether isoimperatorin (ISOIM) regulates the malignant phenotype of T‑cell acute lymphoblastic leukemia (T-ALL) cells through the PI3K/AKT pathway and programmed cell death ligand-1 (PD-L1).

Methods

Through in vitro experiments, ISOIM on T-ALL cell proliferation and apoptosis was evaluated using the cell counting kit-8 and EdU assays, flow cytometry, and TUNEL staining. Network pharmacology, molecular docking, and functional enrichment analyses were conducted to analyze the underlying mechanisms of ISOIM. Changes in apoptosis-related proteins, PD-L1 protein, and PI3K/AKT pathway-related proteins were assessed by western blotting.

Results

ISOIM inhibited T-ALL cell proliferation, promoted apoptosis, decreased Bcl-2 levels, and increased C-caspase-3 and Bax levels. KEGG and GO enrichment analyses indicated that the overlapping targets between ISOIM and ALL were related to the PD-1 checkpoint and PI3K/AKT pathway. Molecular docking analysis showed good binding between ISOIM and PIK3CA (also known as PI3K). ISOIM reduced PD-L1, p-PI3K, p-AKT, and p-mTOR levels. Moreover, the PI3K/AKT pathway activator 740 Y-P reversed the inhibitory effect of ISOIM on PD-L1 expression and the malignant behavior of T-ALL cells.

Conclusions

ISOIM inhibited the malignant behavior of T-ALL cells and reduced PD-L1 levels by suppressing the PI3K/AKT pathway. This study provides a theoretical basis for developing novel treatment strategies for ALL.
目的探讨异欧前花素(ISOIM)是否通过PI3K/AKT通路和程序性细胞死亡配体-1 (PD-L1)调控T细胞急性淋巴细胞白血病(T- all)细胞的恶性表型。方法通过体外实验,采用细胞计数试剂盒-8、EdU检测、流式细胞术、TUNEL染色等方法观察ISOIM对T-ALL细胞增殖和凋亡的影响。通过网络药理学、分子对接、功能富集等方法分析了ISOIM的作用机制。western blotting检测凋亡相关蛋白、PD-L1蛋白和PI3K/AKT通路相关蛋白的变化。结果isoim抑制T-ALL细胞增殖,促进细胞凋亡,降低Bcl-2水平,升高C-caspase-3和Bax水平。KEGG和GO富集分析表明,ISOIM和ALL之间的重叠靶点与PD-1检查点和PI3K/AKT通路有关。分子对接分析表明ISOIM与PIK3CA(又称PI3K)结合良好。ISOIM降低了PD-L1、p-PI3K、p-AKT和p-mTOR水平。此外,PI3K/AKT通路激活剂740 Y-P逆转了ISOIM对PD-L1表达和T-ALL细胞恶性行为的抑制作用。结论isoim通过抑制PI3K/AKT通路抑制T-ALL细胞恶性行为,降低PD-L1水平。本研究为开发新的ALL治疗策略提供了理论基础。
{"title":"Isoimperatorin inhibits cell proliferation and induces apoptosis via regulating PI3K/AKT pathway in acute lymphoblastic leukemia","authors":"Jing Xiao ,&nbsp;Yan Wang","doi":"10.1016/j.molimm.2025.12.009","DOIUrl":"10.1016/j.molimm.2025.12.009","url":null,"abstract":"<div><h3>Objectives</h3><div>This study aims to explore whether isoimperatorin (ISOIM) regulates the malignant phenotype of T‑cell acute lymphoblastic leukemia (T-ALL) cells through the PI3K/AKT pathway and programmed cell death ligand-1 (PD-L1).</div></div><div><h3>Methods</h3><div>Through <em>in vitro</em> experiments, ISOIM on T-ALL cell proliferation and apoptosis was evaluated using the cell counting kit-8 and EdU assays, flow cytometry, and TUNEL staining. Network pharmacology, molecular docking, and functional enrichment analyses were conducted to analyze the underlying mechanisms of ISOIM. Changes in apoptosis-related proteins, PD-L1 protein, and PI3K/AKT pathway-related proteins were assessed by western blotting.</div></div><div><h3>Results</h3><div>ISOIM inhibited T-ALL cell proliferation, promoted apoptosis, decreased Bcl-2 levels, and increased C-caspase-3 and Bax levels. KEGG and GO enrichment analyses indicated that the overlapping targets between ISOIM and ALL were related to the PD-1 checkpoint and PI3K/AKT pathway. Molecular docking analysis showed good binding between ISOIM and PIK3CA (also known as PI3K). ISOIM reduced PD-L1, p-PI3K, p-AKT, and p-mTOR levels. Moreover, the PI3K/AKT pathway activator 740 Y-P reversed the inhibitory effect of ISOIM on PD-L1 expression and the malignant behavior of T-ALL cells.</div></div><div><h3>Conclusions</h3><div>ISOIM inhibited the malignant behavior of T-ALL cells and reduced PD-L1 levels by suppressing the PI3K/AKT pathway. This study provides a theoretical basis for developing novel treatment strategies for ALL.</div></div>","PeriodicalId":18938,"journal":{"name":"Molecular immunology","volume":"189 ","pages":"Pages 181-191"},"PeriodicalIF":3.0,"publicationDate":"2025-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145787139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Increased TNF-α in SJS/TEN induced by PD-1 inhibitors supports the combination therapy of etanercept and systemic corticosteroids PD-1抑制剂诱导的SJS/TEN中TNF-α升高支持依那西普和全身皮质类固醇联合治疗
IF 3 3区 医学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-12-18 DOI: 10.1016/j.molimm.2025.12.006
Hao Xiong, Zhu Shen

Background

Stevens-Johnson Syndrome / Toxic Epidermal Necrolysis (SJS/TEN) induced by programmed cell death protein 1 (PD-1) inhibitors is a life-threatening condition. Although the exact pathogenesis remains unknown, its treatment mainly relies on high-dose systemic corticosteroids. Given the vital role of tumor necrosis factor-alpha (TNF-α) in classic SJS/TEN, this study sought to investigate the expression of TNF-α and evaluate the effectiveness and safety of combination therapy of etanercept and systemic corticosteroids in PD-1 inhibitor-induced SJS/TEN.

Methods

PD-1 inhibitor-induced SJS/TEN patients (n = 5) meeting diagnostic criteria, including skin biopsy-confirmed full-thickness epidermal necrosis with PD-1 as the sole culprit drug by ALDEN scoring, were enrolled in the study. Single-cell RNA sequencing (scRNA-seq) was conducted on lesional skin from one index patient (blister, erythema, and normal sites). Immunofluorescence staining for TNF-α was performed on samples from all five patients. Finally, a combination therapy of etanercept and systemic corticosteroids was administered to the patients, and the re-epithelization time, corticosteroid treatment duration, and prednisone cumulative dose were analyzed.

Results

scRNA-seq revealed significantly increased TNF-α expression in lesional skin compared with normal skin (p < 0.05), primarily from macrophages, which represented the predominant cell population in the lesion. Immunofluorescence confirmed TNF-α elevation in all five patients (p < 0.05). Besides, combination therapy resulted in rapid re-epithelialization (5.75 ± 1.48 days), a shorter steroid duration (17.75 ± 2.86 days), and reduced cumulative prednisone use (9.83 ± 3.71 mg/kg). No treatment-related severe adverse events occurred. One patient subsequently received a PD-1 inhibitor after recovery and tolerated the re-treatment without complication.

Conclusions

Our findings demonstrated upregulation of TNF-α expression in PD-1 inhibitor-induced SJS/TEN, mainly derived from macrophages. The combination of etanercept and systemic corticosteroids exhibits huge potential for treating this patient population.
程序性细胞死亡蛋白1 (PD-1)抑制剂诱导的stevens - johnson综合征/中毒性表皮坏死松解症(SJS/TEN)是一种危及生命的疾病。虽然确切的发病机制尚不清楚,但其治疗主要依赖于大剂量全身皮质类固醇。鉴于肿瘤坏死因子-α (TNF-α)在经典SJS/TEN中的重要作用,本研究旨在研究TNF-α的表达,并评估依那西普与全身皮质类固醇联合治疗PD-1抑制剂诱导的SJS/TEN的有效性和安全性。方法纳入spd -1抑制剂诱导的SJS/TEN患者(n = 5),符合诊断标准,包括皮肤活检证实全层表皮坏死,ALDEN评分为PD-1为唯一罪魁祸首。单细胞RNA测序(scRNA-seq)对一个指数患者的病变皮肤(水疱、红斑和正常部位)进行。对所有5例患者的样本进行TNF-α免疫荧光染色。最后,对患者进行依那西普和全身皮质类固醇联合治疗,分析再上皮时间、皮质类固醇治疗时间和泼尼松累积剂量。结果scrna -seq显示,与正常皮肤相比,病变皮肤中TNF-α的表达显著增加(p <; 0.05),主要来自巨噬细胞,巨噬细胞是病变中占主导地位的细胞群。免疫荧光证实5例患者均出现TNF-α升高(p <; 0.05)。此外,联合治疗导致快速的再上皮化(5.75 ± 1.48天),更短的类固醇持续时间(17.75 ± 2.86天),减少泼尼松的累积使用(9.83 ± 3.71 mg/kg)。未发生与治疗相关的严重不良事件。一名患者在康复后接受了PD-1抑制剂治疗,并耐受再次治疗,无并发症。结论在PD-1抑制剂诱导的SJS/TEN中,TNF-α表达上调,主要来源于巨噬细胞。依那西普联合全身性皮质类固醇在治疗这一患者群体中显示出巨大的潜力。
{"title":"Increased TNF-α in SJS/TEN induced by PD-1 inhibitors supports the combination therapy of etanercept and systemic corticosteroids","authors":"Hao Xiong,&nbsp;Zhu Shen","doi":"10.1016/j.molimm.2025.12.006","DOIUrl":"10.1016/j.molimm.2025.12.006","url":null,"abstract":"<div><h3>Background</h3><div>Stevens-Johnson Syndrome / Toxic Epidermal Necrolysis (SJS/TEN) induced by programmed cell death protein 1 (PD-1) inhibitors is a life-threatening condition. Although the exact pathogenesis remains unknown, its treatment mainly relies on high-dose systemic corticosteroids. Given the vital role of tumor necrosis factor-alpha (TNF-α) in classic SJS/TEN, this study sought to investigate the expression of TNF-α and evaluate the effectiveness and safety of combination therapy of etanercept and systemic corticosteroids in PD-1 inhibitor-induced SJS/TEN.</div></div><div><h3>Methods</h3><div>PD-1 inhibitor-induced SJS/TEN patients (n = 5) meeting diagnostic criteria, including skin biopsy-confirmed full-thickness epidermal necrosis with PD-1 as the sole culprit drug by ALDEN scoring, were enrolled in the study. Single-cell RNA sequencing (scRNA-seq) was conducted on lesional skin from one index patient (blister, erythema, and normal sites). Immunofluorescence staining for TNF-α was performed on samples from all five patients. Finally, a combination therapy of etanercept and systemic corticosteroids was administered to the patients, and the re-epithelization time, corticosteroid treatment duration, and prednisone cumulative dose were analyzed.</div></div><div><h3>Results</h3><div>scRNA-seq revealed significantly increased TNF-α expression in lesional skin compared with normal skin (<em>p</em> &lt; 0.05), primarily from macrophages, which represented the predominant cell population in the lesion. Immunofluorescence confirmed TNF-α elevation in all five patients (<em>p</em> &lt; 0.05). Besides, combination therapy resulted in rapid re-epithelialization (5.75 ± 1.48 days), a shorter steroid duration (17.75 ± 2.86 days), and reduced cumulative prednisone use (9.83 ± 3.71 mg/kg). No treatment-related severe adverse events occurred. One patient subsequently received a PD-1 inhibitor after recovery and tolerated the re-treatment without complication.</div></div><div><h3>Conclusions</h3><div>Our findings demonstrated upregulation of TNF-α expression in PD-1 inhibitor-induced SJS/TEN, mainly derived from macrophages. The combination of etanercept and systemic corticosteroids exhibits huge potential for treating this patient population.</div></div>","PeriodicalId":18938,"journal":{"name":"Molecular immunology","volume":"189 ","pages":"Pages 174-180"},"PeriodicalIF":3.0,"publicationDate":"2025-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145787083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hypoxic conditioning induced by CoCl2 enhanced the therapeutic effects of mesenchymal stem cell-derived exosomes on oxazolone-induced atopic dermatitis-like skin lesions in BALB/c mice CoCl2诱导的缺氧条件增强了间充质干细胞来源的外泌体对恶唑酮诱导的BALB/c小鼠特应性皮炎样皮肤病变的治疗作用。
IF 3 3区 医学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-12-17 DOI: 10.1016/j.molimm.2025.12.008
Jin-Woo Kim , Hyeon Ji Lee , Pahn-Shick Chang , Jung Min Lee , Jin-Chul Kim
Atopic dermatitis (AD) is a chronic skin disease characterized by inflammation and disruption of the skin barrier. It is normally treated using moisturizers and steroids; however, these are palliatives and do not serve as a therapy. Mesenchymal stem cells (MSCs) are tissue stem cells with immunomodulatory activities, and exosomes reflect the physiologies of producer cells. Therefore, the use of MSCs and exosomes with their immunomodulatory activities is emerging as a new method to treat AD. Here, we used cobalt chloride (CoCl2) to induce hypoxic conditioning, and tested the therapeutic efficacy of exosomes derived from CoCl2-treated MSCs in treating AD. In vitro, the exosomes derived from CoCl2-treated MSCs increased the proliferation of HaCaT cells and decreased inflammatory cytokine levels. In the oxazolone-induced chronic AD mouse model, the exosomes derived from CoCl2-treated MSCs reduced ear thickness, restored the skin barrier, and reduced immune cell infiltration and inflammatory markers. These data indicated that hypoxic conditioning induced by the CoCl2 treatment enhanced the therapeutic efficacy of exosomes derived from MSCs, suggesting that these exosomes can be used to alleviate the symptoms of AD. Given the current AD treatment landscape dominated by biologics and JAK inhibitors, our approach may serve as a steroid-sparing, biologic-agnostic adjunct or alternative, leveraging the safety and manufacturability of cell-free therapy.
特应性皮炎(AD)是一种以炎症和皮肤屏障破坏为特征的慢性皮肤病。通常使用保湿霜和类固醇治疗;然而,这些都是治标不治本,不能作为一种治疗方法。间充质干细胞(MSCs)是具有免疫调节活性的组织干细胞,外泌体反映了产生细胞的生理特性。因此,利用具有免疫调节活性的间充质干细胞和外泌体正在成为治疗AD的一种新方法。在这里,我们使用氯化钴(CoCl2)诱导缺氧条件,并测试CoCl2处理的MSCs衍生的外泌体治疗AD的疗效。在体外,cocl2处理的MSCs衍生的外泌体增加了HaCaT细胞的增殖,降低了炎症细胞因子水平。在恶唑酮诱导的慢性AD小鼠模型中,cocl2处理的MSCs衍生的外泌体减少了耳部厚度,恢复了皮肤屏障,减少了免疫细胞浸润和炎症标志物。这些数据表明,CoCl2治疗诱导的缺氧条件增强了来自MSCs的外泌体的治疗效果,表明这些外泌体可用于缓解AD的症状。鉴于目前阿尔茨海默病的治疗领域主要是生物制剂和JAK抑制剂,我们的方法可以作为一种不使用类固醇、生物不可知的辅助或替代方法,利用无细胞治疗的安全性和可制造性。
{"title":"Hypoxic conditioning induced by CoCl2 enhanced the therapeutic effects of mesenchymal stem cell-derived exosomes on oxazolone-induced atopic dermatitis-like skin lesions in BALB/c mice","authors":"Jin-Woo Kim ,&nbsp;Hyeon Ji Lee ,&nbsp;Pahn-Shick Chang ,&nbsp;Jung Min Lee ,&nbsp;Jin-Chul Kim","doi":"10.1016/j.molimm.2025.12.008","DOIUrl":"10.1016/j.molimm.2025.12.008","url":null,"abstract":"<div><div>Atopic dermatitis (AD) is a chronic skin disease characterized by inflammation and disruption of the skin barrier. It is normally treated using moisturizers and steroids; however, these are palliatives and do not serve as a therapy. Mesenchymal stem cells (MSCs) are tissue stem cells with immunomodulatory activities, and exosomes reflect the physiologies of producer cells. Therefore, the use of MSCs and exosomes with their immunomodulatory activities is emerging as a new method to treat AD. Here, we used cobalt chloride (CoCl<sub>2</sub>) to induce hypoxic conditioning, and tested the therapeutic efficacy of exosomes derived from CoCl<sub>2</sub>-treated MSCs in treating AD. <em>In vitro</em>, the exosomes derived from CoCl<sub>2</sub>-treated MSCs increased the proliferation of HaCaT cells and decreased inflammatory cytokine levels. In the oxazolone-induced chronic AD mouse model, the exosomes derived from CoCl<sub>2</sub>-treated MSCs reduced ear thickness, restored the skin barrier, and reduced immune cell infiltration and inflammatory markers. These data indicated that hypoxic conditioning induced by the CoCl<sub>2</sub> treatment enhanced the therapeutic efficacy of exosomes derived from MSCs, suggesting that these exosomes can be used to alleviate the symptoms of AD. Given the current AD treatment landscape dominated by biologics and JAK inhibitors, our approach may serve as a steroid-sparing, biologic-agnostic adjunct or alternative, leveraging the safety and manufacturability of cell-free therapy.</div></div>","PeriodicalId":18938,"journal":{"name":"Molecular immunology","volume":"189 ","pages":"Pages 153-162"},"PeriodicalIF":3.0,"publicationDate":"2025-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145781462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The role of miR-3188-mediated transcriptional activation of IL-7Rα in tumor immunotherapy research mir -3188介导的IL-7Rα转录激活在肿瘤免疫治疗研究中的作用
IF 3 3区 医学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-12-16 DOI: 10.1016/j.molimm.2025.12.007
Dan Wan , Xiao Liang , Fanfan Liang , Mengchen Zhu , Chongyu Zhang , Shaoying Zhang

Background

Adoptive cell therapy (ACT) utilizing tumor-infiltrating lymphocytes (TIL) is a promising immunotherapeutic approach for disseminated malignancies. However, ex vivo-expanded tumor-infiltrating lymphocytes (TIL) often rapidly progress to a state of functional exhaustion or suppression within the tumor microenvironment. Interleukin-7(IL-7) not only supports the survival of T-lymphocyte in vivo but also induces vigorous expansion of naïve and memory T lymphocytes in vitro. Upregulating the expression of interleukin-7 receptor alpha (IL-7Rα) helps T cells restore their responsiveness to IL-7 signaling, aids in their survival, and enables them to regain anti-tumor activity.

Methods

Firstly, we utilized databases to analyze the expression changes of CD127 in different tumor tissues, clarifying the correlation between its expression changes and patient prognosis. Subsequently, we collected clinical patient samples to validate the expression changes of CD127 in tumor-infiltrating T cells. We also simulated the tumor microenvironment through in vitro co-culture to explore the impact of tumor cells on the expression of CD127 on the surface of T cells. After then, we screened for miRNAs that are complementary to the sequence of the TATA box region in the CD127 promoter and employed a CD127 promoter driven dual-luciferase reporter system to identify the specific miRNA capable of upregulating CD127 expression. Finally, we analyzed the effects of miRNA-mediated upregulation of CD127 on T cell function.

Results

Bioinformatics analysis and clinical validation both confirmed decreased IL-7Rα expression in tumors. Moreover, in clinical samples, IL-7Rα and miR-3188 expression levels showed concordant changes and a positive correlation. miR-3188 can upregulate the expression level of IL-7Rα by specifically targeting the TATA-box region of CD127 promoter. Utilizing miR-3188 to upregulate IL-7Rα expression can facilitate T cell survival, promote the development of memory T cells and enhance the secondary response and tumor-killing capacity of T cells.

Conclusion

Our findings reveal a novel mechanism of IL-7Rα regulation and propose a potential strategy to improve the persistence and functionality of T cells for ACT.
背景:利用肿瘤浸润淋巴细胞(TIL)的过继细胞疗法(ACT)是一种很有前途的治疗弥漫性恶性肿瘤的免疫治疗方法。然而,体外扩张的肿瘤浸润淋巴细胞(TIL)往往在肿瘤微环境中迅速发展到功能衰竭或抑制状态。白细胞介素-7(IL-7)不仅在体内支持T淋巴细胞的存活,而且在体外诱导naïve和记忆T淋巴细胞的剧烈扩张。上调白细胞介素-7受体α (IL-7Rα)的表达有助于T细胞恢复对IL-7信号的反应性,有助于其生存,并使其重新获得抗肿瘤活性。方法:首先利用数据库分析CD127在不同肿瘤组织中的表达变化,明确其表达变化与患者预后的关系。随后,我们收集临床患者样本来验证CD127在肿瘤浸润T细胞中的表达变化。我们还通过体外共培养模拟肿瘤微环境,探讨肿瘤细胞对T细胞表面CD127表达的影响。在此之后,我们筛选了CD127启动子TATA盒区序列互补的miRNA,并采用CD127启动子驱动的双荧光素酶报告系统来鉴定能够上调CD127表达的特异性miRNA。最后,我们分析了mirna介导的CD127上调对T细胞功能的影响。结果:生物信息学分析和临床验证均证实肿瘤中IL-7Rα表达降低。此外,在临床样本中,IL-7Rα和miR-3188表达水平呈现一致性变化和正相关。miR-3188可以通过特异性靶向CD127启动子的TATA-box区域上调IL-7Rα的表达水平。利用miR-3188上调IL-7Rα表达,可以促进T细胞存活,促进记忆T细胞的发育,增强T细胞的二次应答和肿瘤杀伤能力。结论:我们的发现揭示了IL-7Rα调控的新机制,并提出了一种潜在的策略来提高T细胞对ACT的持久性和功能性。
{"title":"The role of miR-3188-mediated transcriptional activation of IL-7Rα in tumor immunotherapy research","authors":"Dan Wan ,&nbsp;Xiao Liang ,&nbsp;Fanfan Liang ,&nbsp;Mengchen Zhu ,&nbsp;Chongyu Zhang ,&nbsp;Shaoying Zhang","doi":"10.1016/j.molimm.2025.12.007","DOIUrl":"10.1016/j.molimm.2025.12.007","url":null,"abstract":"<div><h3>Background</h3><div>Adoptive cell therapy (ACT) utilizing tumor-infiltrating lymphocytes (TIL) is a promising immunotherapeutic approach for disseminated malignancies. However, <em>ex vivo</em>-expanded tumor-infiltrating lymphocytes (TIL) often rapidly progress to a state of functional exhaustion or suppression within the tumor microenvironment. Interleukin-7(IL-7) not only supports the survival of T-lymphocyte <em>in vivo</em> but also induces vigorous expansion of naïve and memory T lymphocytes <em>in vitro</em>. Upregulating the expression of interleukin-7 receptor alpha (<em>IL-7Rα</em>) helps T cells restore their responsiveness to <em>IL-7</em> signaling, aids in their survival, and enables them to regain anti-tumor activity.</div></div><div><h3>Methods</h3><div>Firstly, we utilized databases to analyze the expression changes of <em>CD127</em> in different tumor tissues, clarifying the correlation between its expression changes and patient prognosis. Subsequently, we collected clinical patient samples to validate the expression changes of <em>CD127</em> in tumor-infiltrating T cells. We also simulated the tumor microenvironment through <em>in vitro</em> co-culture to explore the impact of tumor cells on the expression of <em>CD127</em> on the surface of T cells. After then, we screened for miRNAs that are complementary to the sequence of the TATA box region in the <em>CD127</em> promoter and employed a <em>CD127</em> promoter driven dual-luciferase reporter system to identify the specific miRNA capable of upregulating <em>CD127</em> expression. Finally, we analyzed the effects of miRNA-mediated upregulation of <em>CD127</em> on T cell function.</div></div><div><h3>Results</h3><div>Bioinformatics analysis and clinical validation both confirmed decreased <em>IL-7Rα</em> expression in tumors. Moreover, in clinical samples, <em>IL-7Rα</em> and <em>miR-3188</em> expression levels showed concordant changes and a positive correlation. <em>miR-3188</em> can upregulate the expression level of <em>IL-7Rα</em> by specifically targeting the TATA-box region of <em>CD127</em> promoter. Utilizing <em>miR-3188</em> to upregulate <em>IL-7Rα</em> expression can facilitate T cell survival, promote the development of memory T cells and enhance the secondary response and tumor-killing capacity of T cells.</div></div><div><h3>Conclusion</h3><div>Our findings reveal a novel mechanism of <em>IL-7Rα</em> regulation and propose a potential strategy to improve the persistence and functionality of T cells for ACT.</div></div>","PeriodicalId":18938,"journal":{"name":"Molecular immunology","volume":"189 ","pages":"Pages 142-152"},"PeriodicalIF":3.0,"publicationDate":"2025-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145775059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Molecular immunology
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1