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Peripheral PD-1⁺ T cell signatures predict immunotherapy response and survival in hepatobiliary cancers 外周PD-1 + T细胞特征预测肝癌免疫治疗反应和生存
IF 5.9 2区 医学 Q1 MEDICAL LABORATORY TECHNOLOGY Pub Date : 2026-02-01 DOI: 10.1016/j.trsl.2026.01.004
Mingjian Piao , Jiayu Xiao , Nan Zhang , Chengjie Li , Jiongyuan Li , Lihua Guan , Shuofeng Li , Zhe Zhu , Shi Feng , Boyu Sun , Dandan Li , Xuzhen Qin , Ling Qiu , Haitao Zhao

Background

Immune checkpoint inhibitors (ICIs) have shown efficacy in hepatobiliary malignancies; however, reliable biomarkers for predicting treatment response remain limited. Peripheral PD-1⁺ T cells, which reflect both T-cell exhaustion and reinvigoration, may serve as novel immune correlates of clinical benefit.

Methods

We prospectively enrolled 99 patients with advanced hepatocellular carcinoma (HCC) or biliary tract cancer (BTC) who received ICIs at Peking Union Medical College Hospital between December 2023 and December 2024. Peripheral blood was collected at baseline and during treatment for flow cytometric quantification of PD-1⁺ T-cell subsets. Patients were randomly divided into a training cohort (n=69) and a validation cohort (n=30). Survival outcomes were analyzed using the Kaplan–Meier method. Baseline predictors were identified by least absolute shrinkage and selection operator (LASSO) regression, followed by nomogram construction.

Results

Responders exhibited significantly longer progression-free survival (PFS; 16.4 vs. 3.5 months, p<0.001) and overall survival (OS; not reached vs. 10.8 months, p<0.001) than non-responders. Higher baseline CD3⁺PD-1⁺ T-cell percentages (32.8% vs. 24.5%, p<0.001) and lower neutrophil-to-lymphocyte ratios (NLR, p=0.002) characterized responders. LASSO regression identified cirrhosis, CD3⁺PD-1⁺ T-cell percentage, and NLR as independent predictors (AUC 0.846 training; 0.670 validation). Longitudinal analysis showed that decreased PD-1⁺ T-cell levels post-treatment correlated with clinical response, while a post-/pre-treatment CD8⁺PD-1⁺ T-cell ratio above 0.07 predicted inferior PFS.

Conclusions

Baseline and dynamic circulating PD-1⁺ T-cell profiles robustly predict ICI response and survival in hepatobiliary cancers, supporting their potential as noninvasive biomarkers for individualized immunotherapy.
背景:免疫检查点抑制剂(ICIs)在肝胆恶性肿瘤中显示出疗效;然而,预测治疗反应的可靠生物标志物仍然有限。外周PD-1 + T细胞反映了T细胞的衰竭和再生,可能作为临床获益的新的免疫相关因子。方法:我们前瞻性纳入了2023年12月至2024年12月在北京协和医院接受ICIs治疗的99例晚期肝癌(HCC)或胆道癌(BTC)患者。在基线和治疗期间收集外周血,流式细胞术定量PD-1 + t细胞亚群。患者随机分为训练组(n=69)和验证组(n=30)。生存结果采用Kaplan-Meier法进行分析。通过最小绝对收缩和选择算子(LASSO)回归确定基线预测因子,然后进行nomogram construction。结果:应答者表现出更长的无进展生存期(PFS, 16.4个月vs 3.5个月)。结论:基线和动态循环PD-1 + t细胞谱可以可靠地预测胆道癌患者的ICI反应和生存,支持它们作为个体化免疫治疗的无创生物标志物的潜力。
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引用次数: 0
Ligand–receptor hotspots in dendritic–T cell niches expose targets in autoimmunity 树突状t细胞壁龛中的配体受体热点暴露自身免疫靶标
IF 5.9 2区 医学 Q1 MEDICAL LABORATORY TECHNOLOGY Pub Date : 2026-02-01 DOI: 10.1016/j.trsl.2026.01.006
Caio Santos Bonilha

Background

Dendritic cell–T cell (DC–T) co-signalling pathways are central switches directing immunity, tolerance, or evasion. Despite characterisation of known pathways, additional mediators that may contribute uniquely to regulating T-cell responses remain to be defined.

Objective

To identify emerging mediators of DC–T communication associated with autoimmune skin inflammation.

Methods

Spatial transcriptomic data from atopic dermatitis (AD) and psoriasis (PsO) skin were integrated with single-cell RNA sequencing to resolve ligand–receptor (LR) networks operating at DC–T interaction sites, including regions of DC–T co-occupation, defined as spots simultaneously enriched for DC and T-cell transcriptional signatures. LR-based ranking was used to prioritise canonical and emerging co-signalling mediators linked to autoimmune inflammation, which were subsequently validated in independent spatial and CITE-seq datasets.

Results

Top-ranked genes F11R and CDH3 localised to the epidermis, an area enriched in highly interactive DC–T regions, and correlated with PsO severity, establishing a link between spatial communication strength and clinical outcome. Among these, F11R also associated with cytokine signalling in severe PsO, linking its spatial enrichment to enhanced inflammatory states within interaction-rich niches. CITE-seq analysis showed that F11R RNA and protein expression correlate in PsO patients, with no upregulation observed in circulating DCs or T cells. In contrast, both F11R and co-signalling molecules were elevated in the arthritic form of the disease, characterised by systemic immune activation.

Conclusion

This study establishes a spatial framework for identifying immune communication mediators and highlight F11R as a potential target linked to autoimmune skin inflammation severity.

Capsule summary

Mapping dendritic–T cell communication in psoriasis identifies F11R as a spatially enriched signature associated with disease severity, offering insight into local immune amplification and highlighting potential targets for precision modulation of autoimmune inflammation.
树突状细胞- t细胞(DC-T)共信号通路是指导免疫、耐受或逃避的中枢开关。尽管已知途径的特征,其他可能对调节t细胞反应有独特贡献的介质仍有待确定。目的寻找与自身免疫性皮肤炎症相关的DC-T通讯的新介质。方法将特应性皮炎(AD)和牛皮癣(PsO)皮肤的空间转录组学数据与单细胞RNA测序相结合,以解析DC - t相互作用位点的配体-受体(LR)网络,包括DC - t共占据区域,定义为DC和t细胞转录特征同时富集的点。基于lr的排序用于优先考虑与自身免疫性炎症相关的规范和新兴的共信号介质,随后在独立的空间和CITE-seq数据集中进行验证。结果stop排名的基因F11R和CDH3定位于表皮,这一区域富含高度相互作用的DC-T区域,并与PsO严重程度相关,建立了空间通信强度与临床结果之间的联系。其中,F11R还与严重PsO的细胞因子信号传导相关,将其空间富集与相互作用丰富的生态位内炎症状态的增强联系起来。CITE-seq分析显示,F11R RNA和蛋白表达在PsO患者中相关,在循环dc或T细胞中未观察到上调。相反,F11R和共信号分子在以全身免疫激活为特征的关节炎形式的疾病中均升高。本研究建立了识别免疫通讯介质的空间框架,并强调F11R是与自身免疫性皮肤炎症严重程度相关的潜在靶点。绘制银屑病树突状t细胞通讯图谱,确定F11R是与疾病严重程度相关的空间富集信号,提供了对局部免疫扩增的深入了解,并突出了自身免疫性炎症精确调节的潜在靶点。
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引用次数: 0
IgG from anti-MDA5⁺ CADM patients impairs NK cell function via CD16 in RP-ILD 抗mda5 + CADM患者的IgG在RP-ILD中通过CD16损害NK细胞功能
IF 5.9 2区 医学 Q1 MEDICAL LABORATORY TECHNOLOGY Pub Date : 2026-01-21 DOI: 10.1016/j.trsl.2026.01.003
Yiying Yang , Ke Liu , Muyuan Li , Caiyan Li , Li Wang , Meidong Liu , Hui Luo , Yisha Li , Xiaoxia Zuo , Quanzhen Li , Chuyi Tan , Huali Zhang

Objective

To investigate natural killer (NK) cell dysfunction in anti-MDA5 autoantibody-positive (anti-MDA5⁺) clinically amyopathic dermatomyositis (CADM) patients with rapidly progressive interstitial lung disease (RP-ILD), and explore potential mechanisms related to macrophage activation.

Methods

Differentially expressed genes (DEGs) in peripheral blood mononuclear cells (PBMCs) from anti-MDA5+ CADM and anti-Jo1-positive (anti-Jo-1+) dermatomyositis patients were profiled using the Illumina HT-12 v4 chip. Cytokine profiles were analyzed using ELISA, and flow cytometry was performed to assess PBMC subsets, NK cell cytotoxicity, and the activation of PLC-γ2 and MAPK signaling. IgG purified from patient serum was used to assess antibody-dependent cellular cytotoxicity (ADCC) and phagocytosis (ADCP) in THP-1/THP-1–like macrophages under poly(I:C) stimulation.

Results

Anti-MDA5⁺ CADM patients exhibited downregulated expression of NK cell activation receptor genes and elevated cytokines such as sCD163 and ferritin compared to anti-Jo-1⁺ patients. NK cell percentages in PBMCs were prominently decreased in anti-MDA5+ patients with RP-ILD compared to those without, and NK cell cytotoxicity or degranulation was weakened, as shown by decreased CD107a and perforin expression, while monocyte populations were increased in RP-ILD patients. IgG purified from anti-MDA5⁺ patient serum impaired NK-cell degranulation in vitro and enhanced ADCC/ADCP activity of THP-1 macrophages following poly(I:C) stimulation. These effects were reduced by CD16 knockdown, indicating involvement of FcγRIII (CD16) dependent interactions. PBMCs from RP-ILD patients exhibited hypophosphorylation of PLCγ2 and ERK, along with hyperphosphorylation of p38, consistent with altered downstream signaling associated with CD16 engagement.

Conclusion

NK-cell dysfunction and enhanced macrophage activation in anti-MDA5⁺ CADM patients with RP-ILD are associated with dysregulated CD16-dependent IgG–cell interactions and perturbations in downstream PLCγ2–MAPK signaling. These findings highlight FcγR-mediated immune dysregulation as a potential contributor to the severe inflammatory phenotype characteristic of RP-ILD, while not establishing antigen-specific mechanisms.
目的研究抗mda5自身抗体阳性(anti-MDA5⁺)临床淀粉病皮肌炎(CADM)伴快速进展性间质性肺疾病(RP-ILD)患者的自然杀伤(NK)细胞功能障碍,并探讨巨噬细胞活化的潜在机制。方法采用Illumina ht - 12v4芯片对抗mda5 + CADM和抗jo1阳性皮肌炎患者外周血单个核细胞(PBMCs)差异表达基因(DEGs)进行分析。采用ELISA分析细胞因子谱,流式细胞术评估PBMC亚群、NK细胞毒性以及PLC-γ2和MAPK信号的激活。从患者血清中纯化的IgG用于评估poly(I:C)刺激下THP-1/THP-1样巨噬细胞的抗体依赖性细胞毒性(ADCC)和吞噬作用(ADCP)。结果与抗jo -1 +患者相比,抗mda5 + CADM患者NK细胞活化受体基因表达下调,sCD163、铁蛋白等细胞因子表达升高。抗mda5阳性的RP-ILD患者外周血中NK细胞的百分比明显低于非抗mda5阳性的患者,NK细胞的细胞毒性或脱颗粒作用减弱,CD107a和穿孔素表达降低,而RP-ILD患者的单核细胞群增加。抗mda5 +患者血清中纯化的IgG破坏了nk细胞体外脱颗粒,增强了poly(I:C)刺激后THP-1巨噬细胞的ADCC/ADCP活性。这些作用通过CD16敲低而降低,表明参与了FcγRIII (CD16)依赖的相互作用。RP-ILD患者的pbmc表现出plc γ - 2和ERK的低磷酸化,以及p38的高磷酸化,与CD16参与相关的下游信号通路改变一致。结论抗mda5 + CADM RP-ILD患者的nk细胞功能障碍和巨噬细胞活化增强与cd16依赖性igg细胞相互作用失调和下游plc - γ - 2 - mapk信号紊乱有关。这些发现强调了fc - γ - r介导的免疫失调是RP-ILD严重炎症表型特征的潜在因素,但尚未建立抗原特异性机制。
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引用次数: 0
Predicting exercise pulmonary hypertension: the right-net machine learning model a pilot study 预测运动性肺动脉高压:RIGHT-NET机器学习模型的初步研究。
IF 5.9 2区 医学 Q1 MEDICAL LABORATORY TECHNOLOGY Pub Date : 2026-01-01 DOI: 10.1016/j.trsl.2025.12.007
Francesco Ferrara , Rossana Castaldo , Luna Gargani , Nicola Benjamin , Andreina Carbone , Erberto Carluccio , Antonio Cittadini , Veronica Codullo , Anna D’Agostino , Michele D’Alto , Ekkehard Grünig , Alessandra Maria Esposito , Giovanni Esposito , Stefano Ghio , Jaroslaw D. Kasprzak , Graziella Lacava , Alberto Maria Marra , Marco Matucci-Cerinic , Antonella Moreo , Eugenio Picano , Monica Franzese

Background

Exercise-transthoracic Doppler echocardiography (Ex-TTE) determination of mean pulmonary arterial pressure (mPAP)/cardiac output (CO) slope may offer key diagnostic and prognostic information in cardiorespiratory diseases. However, its applicability and reliability in routine clinical practice remain to be established. Herein, the aim of the present study was to apply a machine learning (ML) model to predict abnormal exercise TTE-derived mPAP/CO slope (>3 mmHg/L·min) in individuals at risk of pulmonary hypertension (PH), based only on clinical and resting TTE parameters.

Methods

The study population (221 healthy adults and 196 patients with connective tissue disease) was grouped according to mPAP/CO slope ≤3 vs. >3 mmHg/L·min (n = 222 and n = 195, respectively). Three different ML models (Elastic Net-Regularized Generalized Linear Model, Classification and Regression Tree, LogitBoost) were trained on resting clinical and TTE parameters to predict mPAP/CO slope >3 mmHg/L·min. Data were split into training/test sets to evaluate performance. The model with the highest area under the curve (AUC) on the test set was selected.

Results

The Elastic Net model achieved the best performance (AUC=0.92). Lower tricuspid annular plane systolic excursion/systolic PAP ratio, female sex, and smaller left ventricular outflow tract diameter were the key features predicting TTE-derived mPAP/CO slope >3 mmHg/L·min.

Conclusions

An ML algorithm using resting clinical and TTE parameters can effectively predict exercise TTE-derived mPAP/CO slope >3 mmHg/L·min, supporting its use as a noninvasive tool to identify individuals at risk of exercise PH.
背景:运动-经胸多普勒超声心动图(Ex-TTE)测定平均肺动脉压(mPAP)/心输出量(CO)斜率可能为心肺疾病的诊断和预后提供关键信息。但其在常规临床实践中的适用性和可靠性仍有待建立。在此,本研究的目的是应用机器学习(ML)模型,仅基于临床和静息TTE参数,预测肺动脉高压(PH)风险个体中运动te引起的异常mPAP/CO斜率(>.3 mmHg/L·min)。方法:按照mPAP/CO斜率≤3 vs. >.3 mmHg/L·min分组(n=222, n=195),健康成人221例,结缔组织病患者196例。三种不同的ML模型(弹性网络正则化广义线性模型,分类和回归树,LogitBoost)在静息临床和TTE参数上进行训练,以预测mPAP/CO斜率>3 mmHg/L·min。数据被分成训练/测试集来评估性能。选择测试集中曲线下面积(AUC)最高的模型。结果:Elastic Net模型获得了最佳的性能(AUC=0.92)。三尖瓣下环面收缩偏移/收缩PAP比、女性和较小的左心室流出道直径是预测tte得出的mPAP/CO斜率>.3 mmHg/L·min的关键特征。结论:使用静息临床和TTE参数的ML算法可以有效预测运动te衍生的mPAP/CO斜率>.3 mmHg/L·min,支持其作为识别运动PH风险个体的无创工具。
{"title":"Predicting exercise pulmonary hypertension: the right-net machine learning model a pilot study","authors":"Francesco Ferrara ,&nbsp;Rossana Castaldo ,&nbsp;Luna Gargani ,&nbsp;Nicola Benjamin ,&nbsp;Andreina Carbone ,&nbsp;Erberto Carluccio ,&nbsp;Antonio Cittadini ,&nbsp;Veronica Codullo ,&nbsp;Anna D’Agostino ,&nbsp;Michele D’Alto ,&nbsp;Ekkehard Grünig ,&nbsp;Alessandra Maria Esposito ,&nbsp;Giovanni Esposito ,&nbsp;Stefano Ghio ,&nbsp;Jaroslaw D. Kasprzak ,&nbsp;Graziella Lacava ,&nbsp;Alberto Maria Marra ,&nbsp;Marco Matucci-Cerinic ,&nbsp;Antonella Moreo ,&nbsp;Eugenio Picano ,&nbsp;Monica Franzese","doi":"10.1016/j.trsl.2025.12.007","DOIUrl":"10.1016/j.trsl.2025.12.007","url":null,"abstract":"<div><h3>Background</h3><div>Exercise-transthoracic Doppler echocardiography (Ex-TTE) determination of mean pulmonary arterial pressure (mPAP)/cardiac output (CO) slope may offer key diagnostic and prognostic information in cardiorespiratory diseases. However, its applicability and reliability in routine clinical practice remain to be established. Herein, the aim of the present study was to apply a machine learning (ML) model to predict abnormal exercise TTE-derived mPAP/CO slope (&gt;3 mmHg/L·min) in individuals at risk of pulmonary hypertension (PH), based only on clinical and resting TTE parameters.</div></div><div><h3>Methods</h3><div>The study population (221 healthy adults and 196 patients with connective tissue disease) was grouped according to mPAP/CO slope ≤3 vs. &gt;3 mmHg/L·min (<em>n</em> = 222 and <em>n</em> = 195, respectively). Three different ML models (Elastic Net-Regularized Generalized Linear Model, Classification and Regression Tree, LogitBoost) were trained on resting clinical and TTE parameters to predict mPAP/CO slope &gt;3 mmHg/L·min. Data were split into training/test sets to evaluate performance. The model with the highest area under the curve (AUC) on the test set was selected.</div></div><div><h3>Results</h3><div>The Elastic Net model achieved the best performance (AUC=0.92). Lower tricuspid annular plane systolic excursion/systolic PAP ratio, female sex, and smaller left ventricular outflow tract diameter were the key features predicting TTE-derived mPAP/CO slope &gt;3 mmHg/L·min.</div></div><div><h3>Conclusions</h3><div>An ML algorithm using resting clinical and TTE parameters can effectively predict exercise TTE-derived mPAP/CO slope &gt;3 mmHg/L·min, supporting its use as a noninvasive tool to identify individuals at risk of exercise PH.</div></div>","PeriodicalId":23226,"journal":{"name":"Translational Research","volume":"287 ","pages":"Pages 12-21"},"PeriodicalIF":5.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145890849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
B-cell activation underpins Rituximab response in focal segmental glomerulosclerosis b细胞活化支持局灶节段性肾小球硬化的利妥昔单抗反应。
IF 5.9 2区 医学 Q1 MEDICAL LABORATORY TECHNOLOGY Pub Date : 2026-01-01 DOI: 10.1016/j.trsl.2026.01.002
Liangjian Lu , Chang Yien Chan , Mya Than , Sharon Teo , Perry YW Lau , Kong-Peng Lam , Kar Hui Ng , Hui Kim Yap
The pathogenesis of primary focal segmental glomerulosclerosis (FSGS) is incompletely understood, and outcomes remain poor. Some patients respond to Rituximab, especially patients who have hyporesponsive T-cells, but the underlying mechanism is unknown. This study aimed to investigate the association between B-cell activation and T-cell hypo-responsiveness as well as Rituximab response. A cohort of 33 patients with childhood-onset FSGS receiving Rituximab were recruited. T-cell hypo-responsiveness was defined as stimulated T-cell IFNγ <2.5%, and B-cell activation was characterized by CD80 expression and cytokine production. T-cell hypo-responsiveness was associated with Rituximab response (OR: 5.4 (95% CI: 1.2-25), p = 0.028). Compared to T-cell normo-responsive patients, T-cell hypo-responsive patients had elevated activated CD19+CD80+ B-cells (16% (IQR 6-25) vs 5% (IQR: 1-9), p = 0.009), and upregulation in resting B-cell cytokine production (15/27 cytokines, p < 0.05). Rituximab selectively restored T-cell responsiveness and abolished elevated B-cell CD80 expression and resting cytokine production in these patients, although nascent B-cell activation could still be detected on in vitro stimulation (6/27 cytokines, p < 0.05). Resting B-cell culture supernatants from patients with hypo-responsive T-cells (p = 0.02) but not normo-responsive T-cells were able to induce cytoskeletal rearrangements in cultured podocytes. Together with T-cell responsiveness, resting B-cell cytokine production was able to strongly predict Rituximab response (AUC 0.922±0.077, p = 0.002), and also the duration of Rituximab response (AUC 0.958±0.062, p = 0.019). Rituximab response in childhood-onset FSGS occurs in a subgroup of patients with B-cell mediated disease characterized by B-cell activation and the production of podocyte damaging factors. Resting B-cell cytokine production can predict Rituximab response, and if it will be long-lasting.
原发性局灶节段性肾小球硬化(FSGS)的发病机制尚不完全清楚,预后仍然很差。一些患者对利妥昔单抗有反应,特别是t细胞反应低下的患者,但其潜在机制尚不清楚。本研究旨在探讨b细胞活化与t细胞低反应性以及利妥昔单抗反应之间的关系。招募了33例接受利妥昔单抗治疗的儿童期起病FSGS患者。t细胞低反应性被定义为受刺激的t细胞IFNγ
{"title":"B-cell activation underpins Rituximab response in focal segmental glomerulosclerosis","authors":"Liangjian Lu ,&nbsp;Chang Yien Chan ,&nbsp;Mya Than ,&nbsp;Sharon Teo ,&nbsp;Perry YW Lau ,&nbsp;Kong-Peng Lam ,&nbsp;Kar Hui Ng ,&nbsp;Hui Kim Yap","doi":"10.1016/j.trsl.2026.01.002","DOIUrl":"10.1016/j.trsl.2026.01.002","url":null,"abstract":"<div><div>The pathogenesis of primary focal segmental glomerulosclerosis (FSGS) is incompletely understood, and outcomes remain poor. Some patients respond to Rituximab, especially patients who have hyporesponsive T-cells, but the underlying mechanism is unknown. This study aimed to investigate the association between B-cell activation and T-cell hypo-responsiveness as well as Rituximab response. A cohort of 33 patients with childhood-onset FSGS receiving Rituximab were recruited. T-cell hypo-responsiveness was defined as stimulated T-cell IFNγ &lt;2.5%, and B-cell activation was characterized by CD80 expression and cytokine production. T-cell hypo-responsiveness was associated with Rituximab response (OR: 5.4 (95% CI: 1.2-25), <em>p</em> = 0.028). Compared to T-cell normo-responsive patients, T-cell hypo-responsive patients had elevated activated CD19+CD80+ <em>B</em>-cells (16% (IQR 6-25) vs 5% (IQR: 1-9), <em>p</em> = 0.009), and upregulation in resting B-cell cytokine production (15/27 cytokines, <em>p</em> &lt; 0.05). Rituximab selectively restored T-cell responsiveness and abolished elevated B-cell CD80 expression and resting cytokine production in these patients, although nascent B-cell activation could still be detected on <em>in vitro</em> stimulation (6/27 cytokines, <em>p</em> &lt; 0.05). Resting B-cell culture supernatants from patients with hypo-responsive T-cells (<em>p</em> = 0.02) but not normo-responsive T-cells were able to induce cytoskeletal rearrangements in cultured podocytes. Together with T-cell responsiveness, resting B-cell cytokine production was able to strongly predict Rituximab response (AUC 0.922±0.077, <em>p</em> = 0.002), and also the duration of Rituximab response (AUC 0.958±0.062, <em>p</em> = 0.019). Rituximab response in childhood-onset FSGS occurs in a subgroup of patients with B-cell mediated disease characterized by B-cell activation and the production of podocyte damaging factors. Resting B-cell cytokine production can predict Rituximab response, and if it will be long-lasting.</div></div>","PeriodicalId":23226,"journal":{"name":"Translational Research","volume":"287 ","pages":"Pages 1-11"},"PeriodicalIF":5.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145936872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Neutrophil extracellular traps exacerbate endothelial tight junction dysfunction via the Wnt7a/β-catenin/HDAC5 pathway in sepsis-associated lung injury 在脓毒症相关的肺损伤中,中性粒细胞胞外陷阱通过Wnt7a/β-catenin/HDAC5通路加剧内皮紧密连接功能障碍。
IF 5.9 2区 医学 Q1 MEDICAL LABORATORY TECHNOLOGY Pub Date : 2026-01-01 DOI: 10.1016/j.trsl.2026.01.001
Qianya Hong , Shuainan Zhu , Chenning Li , Heyang Sun , Zhenzhen Zhan , Hao Zhang , Kefang Guo
Sepsis is a complicated clinical disease caused by an infection-related host response, which results in acute organ dysfunction and a high mortality risk. Among the affected organs, the lungs are particularly susceptible to sepsis. Sepsis-induced acute lung injury (SI-ALI) is a common and severe complication observed among septic patients. Neutrophil extracellular traps (NETs) serve a significant role in immune and inflammatory regulation. Our previous studies have shown a close association between NETs and SI-ALI. However, the mechanism by which NETs mediate the interaction between endothelial cell (EC) barrier integrity and inflammatory responses remains incompletely understood. By reanalyzing our RNA-seq data, we discovered that NET-stimulated HUVECs had an increased cell adhesion molecules pathway, and the differentially expressed genes Wnt7a, HDAC5, and Claudin-5 were screened out. The relationships between differentially expressed genes were further established by STRING analysis. The expression levels of Claudin-5 and Wnt7a/β-catenin/HDAC5 signaling pathway proteins were evaluated by quantitative PCR (qPCR), western blotting, and immunofluorescence staining. At the same time, a cecal ligation and puncture (CLP) model was used to induce sepsis in mice to investigate the function of NETs in vivo. In our research, we demonstrated that NETs activate HDAC5 gene expression through the Wnt7a/β-catenin signaling activation, which subsequently downregulated the expression of tight junction (TJ) proteins, including Claudin-5, ZO-1, and Occludin. This led to impaired barrier function in lung microvascular endothelial cells and worsened the prognosis in a murine model of SI-ALI. Moreover, the NETs disruption and Wnt7a or HDAC5 inhibition mitigated the degradation of tight junction proteins in endothelial cells and improved outcomes in septic mice. In conclusion, our findings indicate that NETs contribute to lung endothelial barrier dysfunction via the Wnt7a/β-catenin/HDAC5 axis during the progression of SI-ALI.
脓毒症是由感染相关的宿主反应引起的一种复杂的临床疾病,可导致急性器官功能障碍和高死亡率。在受影响的器官中,肺部特别容易感染败血症。脓毒症致急性肺损伤(SI-ALI)是脓毒症患者常见且严重的并发症。中性粒细胞胞外陷阱(NETs)在免疫和炎症调节中起着重要作用。我们之前的研究表明,net和SI-ALI之间存在密切的联系。然而,NETs介导内皮细胞(EC)屏障完整性和炎症反应之间相互作用的机制仍不完全清楚。通过重新分析我们的RNA-seq数据,我们发现net刺激的HUVECs具有增加的细胞粘附分子通路,并筛选出差异表达的基因Wnt7a, HDAC5和Claudin-5。通过STRING分析进一步确定差异表达基因之间的关系。采用定量PCR (qPCR)、western blotting和免疫荧光染色检测Claudin-5和Wnt7a/β-catenin/HDAC5信号通路蛋白的表达水平。同时,采用盲肠结扎穿刺(CLP)模型诱导小鼠脓毒症,研究NETs在体内的功能。在我们的研究中,我们证明了NETs通过Wnt7a/β-catenin信号激活激活HDAC5基因表达,从而下调紧密连接(TJ)蛋白的表达,包括Claudin-5、ZO-1和Occludin。这导致肺微血管内皮细胞屏障功能受损,并使SI-ALI小鼠模型的预后恶化。此外,NETs的破坏和Wnt7a或HDAC5的抑制减轻了内皮细胞中紧密连接蛋白的降解,改善了脓毒症小鼠的预后。总之,我们的研究结果表明,在SI-ALI的进展过程中,NETs通过Wnt7a/β-catenin/HDAC5轴参与肺内皮屏障功能障碍。
{"title":"Neutrophil extracellular traps exacerbate endothelial tight junction dysfunction via the Wnt7a/β-catenin/HDAC5 pathway in sepsis-associated lung injury","authors":"Qianya Hong ,&nbsp;Shuainan Zhu ,&nbsp;Chenning Li ,&nbsp;Heyang Sun ,&nbsp;Zhenzhen Zhan ,&nbsp;Hao Zhang ,&nbsp;Kefang Guo","doi":"10.1016/j.trsl.2026.01.001","DOIUrl":"10.1016/j.trsl.2026.01.001","url":null,"abstract":"<div><div>Sepsis is a complicated clinical disease caused by an infection-related host response, which results in acute organ dysfunction and a high mortality risk. Among the affected organs, the lungs are particularly susceptible to sepsis. Sepsis-induced acute lung injury (SI-ALI) is a common and severe complication observed among septic patients. Neutrophil extracellular traps (NETs) serve a significant role in immune and inflammatory regulation. Our previous studies have shown a close association between NETs and SI-ALI. However, the mechanism by which NETs mediate the interaction between endothelial cell (EC) barrier integrity and inflammatory responses remains incompletely understood. By reanalyzing our RNA-seq data, we discovered that NET-stimulated HUVECs had an increased cell adhesion molecules pathway, and the differentially expressed genes Wnt7a, HDAC5, and Claudin-5 were screened out. The relationships between differentially expressed genes were further established by STRING analysis. The expression levels of Claudin-5 and Wnt7a/β-catenin/HDAC5 signaling pathway proteins were evaluated by quantitative PCR (qPCR), western blotting, and immunofluorescence staining. At the same time, a cecal ligation and puncture (CLP) model was used to induce sepsis in mice to investigate the function of NETs in vivo. In our research, we demonstrated that NETs activate HDAC5 gene expression through the Wnt7a/β-catenin signaling activation, which subsequently downregulated the expression of tight junction (TJ) proteins, including Claudin-5, ZO-1, and Occludin. This led to impaired barrier function in lung microvascular endothelial cells and worsened the prognosis in a murine model of SI-ALI. Moreover, the NETs disruption and Wnt7a or HDAC5 inhibition mitigated the degradation of tight junction proteins in endothelial cells and improved outcomes in septic mice. In conclusion, our findings indicate that NETs contribute to lung endothelial barrier dysfunction via the Wnt7a/β-catenin/HDAC5 axis during the progression of SI-ALI.</div></div>","PeriodicalId":23226,"journal":{"name":"Translational Research","volume":"287 ","pages":"Pages 22-37"},"PeriodicalIF":5.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145936953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Inhibiting CCR3 expands cancer stem cells via c-Myc–NTSR1 axis and associates with tumor innervation features 抑制CCR3通过c-Myc-NTSR1轴扩展癌症干细胞,并与肿瘤神经支配特征相关。
IF 5.9 2区 医学 Q1 MEDICAL LABORATORY TECHNOLOGY Pub Date : 2026-01-01 DOI: 10.1016/j.trsl.2025.12.005
Ta-Jung Peng , Wei-Lun Hwang , Wan-Hsuan Sun , Shye-Jye Tang , Kuang-Hui Sun
Cancer stem cells (CSCs) drive intra-tumor heterogeneity, therapy resistance, and relapse. Chemokines regulate cancer stemness via intercellular signaling within the tumor microenvironment. However, the role and clinical relevance of CCR3 in tumor subpopulations remain unexplored. In this study, we enriched CSCs by serum-free spheroid culture as spheroid-derived CSCs (SDCSCs). Cell proliferation, clonogenicity, migration/invasion, tumorsphere formation, chemo-drug resistance, in vivo tumorigenicity, signaling activity, and transcriptomic landscape were characterized. TCGA databases were analyzed for clinical relevance. We found that CCR3 silencing increased self-renewal capability, stemness markers expression, chemoresistance, and in vivo tumorigenicity in SDCSCs; however, it inhibited proliferation, colony formation, and invasion in parental cancer cells. Transcriptomic analysis revealed that CCR3 silencing induced pro-tumoral features in SDCSCs, while it resulted in anti-proliferative and anti-invasive profiles in parental cancer cells by oppositely regulating oncogenic signaling, including c-Myc, KRAS, mTORC, and HIF pathways. In SDCSCs, CCR3 silencing induced c-Myc nuclear expression and transcriptional activation, leading to NTSR1 upregulation and enhanced cancer stemness, which was hindered by a c-Myc inhibitor (10058-F4). Clinically, tumors with low CCR3 expression exhibited a transcriptomic landscape with enhanced cell growth and suppressed immune surveillance, accompanied by activated stemness-related signalings and tumor innervation signatures. High NTSR1 expression further exacerbated the poorer survival in patients with low CCR3 expression. In summary, CCR3 inhibition elicits divergent functional and transcriptomic responses in tumor subpopulations and is associated with stemness- and innervation-related signatures that predict poor prognosis. Combined targeting of CCR3 and the c-Myc–NTSR1 axis may eliminate CSCs.
肿瘤干细胞(CSCs)驱动肿瘤内异质性、治疗耐药性和复发。趋化因子通过肿瘤微环境中的细胞间信号传导调节肿瘤的干细胞性。然而,CCR3在肿瘤亚群中的作用和临床相关性仍未被探索。在本研究中,我们通过无血清球形培养将CSCs富集为球形来源的CSCs (SDCSCs)。细胞增殖、克隆性、迁移/侵袭、肿瘤球形成、化学药物耐药性、体内致瘤性、信号活性和转录组学景观被表征。分析TCGA数据库的临床相关性。我们发现CCR3沉默增加了SDCSCs的自我更新能力、干细胞标记物表达、化学耐药和体内致瘤性;然而,它能抑制癌细胞的增殖、集落形成和侵袭。转录组学分析显示,CCR3沉默诱导SDCSCs的促肿瘤特征,同时通过相反调节致癌信号通路,包括c-Myc、KRAS、mTORC和HIF通路,在亲代癌细胞中产生抗增殖和抗侵袭性特征。在SDCSCs中,CCR3沉默诱导c-Myc核表达和转录激活,导致NTSR1上调和癌性增强,这被c-Myc抑制剂(10058-F4)阻碍。临床上,低CCR3表达的肿瘤表现出细胞生长增强和免疫监视抑制的转录组学景观,并伴有激活的干细胞相关信号和肿瘤神经支配特征。高NTSR1表达进一步加剧了低CCR3表达患者较差的生存。总之,CCR3抑制在肿瘤亚群中引起不同的功能和转录组反应,并与预测不良预后的干性和神经相关特征相关。联合靶向CCR3和c-Myc-NTSR1轴可消除CSCs。
{"title":"Inhibiting CCR3 expands cancer stem cells via c-Myc–NTSR1 axis and associates with tumor innervation features","authors":"Ta-Jung Peng ,&nbsp;Wei-Lun Hwang ,&nbsp;Wan-Hsuan Sun ,&nbsp;Shye-Jye Tang ,&nbsp;Kuang-Hui Sun","doi":"10.1016/j.trsl.2025.12.005","DOIUrl":"10.1016/j.trsl.2025.12.005","url":null,"abstract":"<div><div>Cancer stem cells (CSCs) drive intra-tumor heterogeneity, therapy resistance, and relapse. Chemokines regulate cancer stemness via intercellular signaling within the tumor microenvironment. However, the role and clinical relevance of CCR3 in tumor subpopulations remain unexplored. In this study, we enriched CSCs by serum-free spheroid culture as spheroid-derived CSCs (SDCSCs). Cell proliferation, clonogenicity, migration/invasion, tumorsphere formation, chemo-drug resistance, in vivo tumorigenicity, signaling activity, and transcriptomic landscape were characterized. TCGA databases were analyzed for clinical relevance. We found that CCR3 silencing increased self-renewal capability, stemness markers expression, chemoresistance, and <em>in vivo</em> tumorigenicity in SDCSCs; however, it inhibited proliferation, colony formation, and invasion in parental cancer cells. Transcriptomic analysis revealed that CCR3 silencing induced pro-tumoral features in SDCSCs, while it resulted in anti-proliferative and anti-invasive profiles in parental cancer cells by oppositely regulating oncogenic signaling, including c-Myc, KRAS, mTORC, and HIF pathways. In SDCSCs, CCR3 silencing induced c-Myc nuclear expression and transcriptional activation, leading to NTSR1 upregulation and enhanced cancer stemness, which was hindered by a c-Myc inhibitor (10058-F4). Clinically, tumors with low CCR3 expression exhibited a transcriptomic landscape with enhanced cell growth and suppressed immune surveillance, accompanied by activated stemness-related signalings and tumor innervation signatures. High NTSR1 expression further exacerbated the poorer survival in patients with low CCR3 expression. In summary, CCR3 inhibition elicits divergent functional and transcriptomic responses in tumor subpopulations and is associated with stemness- and innervation-related signatures that predict poor prognosis. Combined targeting of CCR3 and the c-Myc–NTSR1 axis may eliminate CSCs.</div></div>","PeriodicalId":23226,"journal":{"name":"Translational Research","volume":"287 ","pages":"Pages 55-68"},"PeriodicalIF":5.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145835806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
PIM3 enhances nucleus pulposus cell function and extracellular matrix integrity via kinase-dependent activation of the Akt/mTOR signaling axis in intervertebral disc degeneration 在椎间盘退变过程中,PIM3通过激酶依赖性激活Akt/mTOR信号轴增强髓核细胞功能和细胞外基质完整性。
IF 5.9 2区 医学 Q1 MEDICAL LABORATORY TECHNOLOGY Pub Date : 2026-01-01 DOI: 10.1016/j.trsl.2025.12.006
Qianshi Zhang , Jia Hu , Ziqi Liu , Siwen Wu , Fusheng Liu , Yanlin Tan , Chao Wei , Xiaobin Wang , Jing Li
Intervertebral disc degeneration (IDD), a condition characterized by extracellular matrix (ECM) degradation and nucleus pulposus (NP) cell senescence, compromises disc function. The Akt signaling pathway is essential for NP cell viability and ECM homeostasis. This study identifies the serine/threonine kinase PIM3 as significantly downregulated in degenerated human NP tissues. Notably, PIM3 mRNA expression levels were found to be negatively correlated with the clinical severity of IDD (Pfirrmann grade). The functional role of PIM3 was investigated through knockdown and overexpression experiments in human NP cells. PIM3 overexpression restored cell viability, suppressed senescence, and enhanced ECM protein levels in degenerated NP cells, while its knockdown in normal cells produced the opposite results. These protective effects were critically dependent on the kinase activity of PIM3. Mechanistically, PIM3 was found to physically interact with and activate the Akt signaling pathway, thereby regulating downstream molecules, including mTOR and FoxO1, to modulate cell viability and senescence. In an IDD rat model, AAV-mediated PIM3 overexpression improved ECM integrity, reduced senescence and activated the Akt pathway, mitigating disc degeneration. In conclusion, this study establishes PIM3 as a key regulator of NP cell homeostasis that acts through direct engagement with the Akt/mTOR/FoxO1 axis. Its correlation with disease severity and the kinase-dependent nature of its function highlight PIM3 as a promising, mechanistically-defined therapeutic target for treating IDD.
椎间盘退变(IDD)是一种以细胞外基质(ECM)降解和髓核(NP)细胞衰老为特征的疾病,损害了椎间盘的功能。Akt信号通路对NP细胞活力和ECM稳态至关重要。本研究发现丝氨酸/苏氨酸激酶PIM3在退化的人类NP组织中显著下调。值得注意的是,pim3mrna表达水平与IDD的临床严重程度(Pfirrmann分级)呈负相关。通过敲低和过表达实验研究了PIM3在人NP细胞中的功能作用。在退化的NP细胞中,PIM3过表达可恢复细胞活力,抑制衰老,并提高ECM蛋白水平,而在正常细胞中,PIM3过表达则产生相反的结果。这些保护作用严重依赖于PIM3的激酶活性。在机制上,PIM3被发现与Akt信号通路物理相互作用并激活,从而调节下游分子,包括mTOR和fox01,以调节细胞活力和衰老。在IDD大鼠模型中,aav介导的PIM3过表达可改善ECM完整性,减少衰老,激活Akt通路,减轻椎间盘退变。综上所述,本研究确定PIM3是NP细胞稳态的关键调节因子,通过直接参与Akt/mTOR/ fox01轴发挥作用。它与疾病严重程度的相关性及其功能的激酶依赖性突出了PIM3作为治疗IDD的有希望的、机械定义的治疗靶点。
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Author Guidelines 作者指导方针
IF 5.9 2区 医学 Q1 MEDICAL LABORATORY TECHNOLOGY Pub Date : 2026-01-01 DOI: 10.1016/S1931-5244(26)00026-5
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Editorial Advisory Board 编辑顾问委员会
IF 5.9 2区 医学 Q1 MEDICAL LABORATORY TECHNOLOGY Pub Date : 2026-01-01 DOI: 10.1016/S1931-5244(26)00025-3
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Translational Research
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