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Modulating endothelial cell dynamics in fat grafting: the impact of DLL4 siRNA via adipose stem cell extracellular vesicles. 调节脂肪移植中的内皮细胞动力学:DLL4 siRNA 通过脂肪干细胞胞外囊泡的影响
IF 5 2区 生物学 Q2 CELL BIOLOGY Pub Date : 2024-10-01 Epub Date: 2024-08-05 DOI: 10.1152/ajpcell.00186.2024
Sen-Lin Deng, Qiang Fu, Qing Liu, Fu-Jun Huang, Miao Zhang, Xun Zhou

In the context of improving the efficacy of autologous fat grafts (AFGs) in reconstructive surgery, this study delineates the novel use of adipose-derived mesenchymal stem cells (ADSCs) and their extracellular vesicles (EVs) as vehicles for delivering delta-like ligand 4 (DLL4) siRNA. The aim was to inhibit DLL4, a gene identified through transcriptome analysis as a critical player in the vascular endothelial cells of AFG tissues, thereby negatively affecting endothelial cell functions and graft survival through the Notch signaling pathway. By engineering ADSC EVs to carry DLL4 siRNA (ADSC EVs-siDLL4), the research demonstrated a marked improvement in endothelial cell proliferation, migration, and lumen formation, and enhanced angiogenesis in vivo, leading to a significant increase in the survival rate of AFGs. This approach presents a significant advancement in the field of tissue engineering and regenerative medicine, offering a potential method to overcome the limitations of current fat grafting techniques.NEW & NOTEWORTHY This study introduces a groundbreaking method for enhancing autologous fat graft survival using adipose-derived stem cell extracellular vesicles (ADSC EVs) to deliver DLL4 siRNA. By targeting the delta-like ligand 4 (DLL4) gene, crucial in endothelial cell dynamics, this innovative approach significantly improves endothelial cell functions and angiogenesis, marking a substantial advancement in tissue engineering and regenerative medicine.

为了提高自体脂肪移植(AFG)在整形手术中的疗效,本研究界定了脂肪间充质干细胞(ADSCs)及其细胞外囊泡(EVs)作为递送 DLL4 siRNA 载体的新用途。DLL4是通过转录组分析确定的AFG组织血管内皮细胞中的一个关键基因,目的是抑制DLL4,从而通过Notch信号通路对内皮细胞功能和移植物存活产生负面影响。通过对携带 DLL4 siRNA 的 ADSC EVs(ADSC EVs-siDLL4)进行工程化处理,研究表明内皮细胞的增殖、迁移和管腔形成得到了明显改善,体内血管生成也得到了增强,从而显著提高了 AFG 的存活率。这种方法是组织工程和再生医学领域的一大进步,为克服当前脂肪移植技术的局限性提供了一种潜在的方法。
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引用次数: 0
Hypomethylation-associated ELF3 helps nasopharyngeal carcinoma to escape immune surveillance via MUC16-mediated glycolytic metabolic reprogramming. 与低甲基化相关的ELF3通过MUC16介导的糖酵解代谢重编程帮助鼻咽癌逃避免疫监视。
IF 5 2区 生物学 Q2 CELL BIOLOGY Pub Date : 2024-10-01 Epub Date: 2024-09-02 DOI: 10.1152/ajpcell.00438.2024
Yueyang Liu, Hong Zhou, Qi Yu, Qiang Wang

Immune escape and metabolic reprogramming are two essential hallmarks of cancer. Mucin-16 (MUC16) has been linked to glycolysis and immune response in different cancers. However, its involvement in nasopharyngeal carcinoma (NPC) has not been well described. We seek to dissect the functions and detailed mechanisms of MUC16 in NPC. Bioinformatics prediction was performed to identify NPC-related molecules. MUC16 was significantly enhanced in NPC tissues, which was correlated with the advanced tumor stage of patients. Lentiviral plasmids-mediated MUC16 deletion inhibited the malignant behavior of NPC cells, and glycolysis inhibition by MUC16 deletion blocked immune escape in NPC cells. E74-like factor 3 (ELF3) bound to the MUC16 promoter promotes the transcription of MUC16. MUC16 overexpression reversed the repressive effect of ELF3 silencing on glycolysis and immune escape in NPC and accelerated tumor growth in vivo. Overexpression of ELF3 in NPC was associated with reduced DNA methylation in its promoter. Our findings revealed the role of the ELF3/MUC16 axis in the immune escape and metabolic reprogramming of NPC, providing potential therapeutic targets for NPC.NEW & NOTEWORTHY We identified the functions of E74-like factor 3 (ELF3) in glycolysis and immune escape of nasopharyngeal carcinoma cells for the first time. As a transcription factor, ELF3 promoted mucin-16 (MUC16) expression by binding to its promoter, leading to the glycolysis-mediated immune escape of nasopharyngeal carcinoma (NPC) cells. Targeting the ELF3/MUC16 axis generates a superior antitumor immune response, which will help establish a novel approach to restore protective antitumor immunity for NPC immunotherapy.

免疫逃逸和代谢重编程是癌症的两个基本特征。粘蛋白-16(MUC16)与不同癌症中的糖酵解和免疫反应有关。然而,它在鼻咽癌(NPC)中的参与尚未得到很好的描述。我们试图剖析 MUC16 在鼻咽癌中的功能和详细机制。我们进行了生物信息学预测,以确定鼻咽癌相关分子。MUC16在鼻咽癌组织中明显增强,这与患者的肿瘤晚期相关。慢病毒质粒介导的MUC16缺失抑制了鼻咽癌细胞的恶性行为,通过MUC16缺失抑制糖酵解阻断了鼻咽癌细胞的免疫逃逸。E74样因子3(ELF3)与MUC16启动子结合,促进MUC16的转录。MUC16的过表达逆转了ELF3沉默对鼻咽癌细胞糖酵解和免疫逃逸的抑制作用,并加速了肿瘤在体内的生长。ELF3在鼻咽癌中的过表达与其启动子中DNA甲基化的减少有关。我们的研究结果揭示了ELF3/MUC16轴在鼻咽癌的免疫逃逸和代谢重编程中的作用,为鼻咽癌提供了潜在的治疗靶点。
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引用次数: 0
PALMD haploinsufficiency aggravates extracellular matrix remodeling in vascular smooth muscle cells and promotes calcification. PALMD 单倍体缺陷会加剧血管平滑肌细胞细胞外基质的重塑并促进钙化。
IF 5 2区 生物学 Q2 CELL BIOLOGY Pub Date : 2024-10-01 Epub Date: 2024-09-09 DOI: 10.1152/ajpcell.00217.2024
Jichao Zhang, Zhao Yang, Congcong Zhang, Shijuan Gao, Yan Liu, Yingkai Li, Songyuan He, Jing Yao, Jie Du, Bin You, Yingchun Han

Reduced PALMD expression is strongly associated with the development of calcified aortic valve stenosis; however, the role of PALMD in vascular calcification remains unknown. Calcified arteries were collected from mice to detect PALMD expression. Heterozygous Palmd knockout (Palmd+/-) mice were established to explore the role of PALMD in subtotal nephrectomy-induced vascular calcification. RNA sequencing was applied to detect molecular changes in aortas from Palmd+/- mice. Primary Palmd+/- vascular smooth muscle cells (VSMCs) or PALMD-silenced VSMCs by short interfering RNA were used to analyze PALMD function in phenotypic changes and calcification. PALMD haploinsufficiency aggravated subtotal nephrectomy-induced vascular calcification. RNA sequencing analysis showed that loss of PALMD disturbed the synthesis and degradation of the extracellular matrix (ECM) in aortas, including collagens and matrix metalloproteinases (Col6a6, Mmp2, Mmp9, etc.). In vitro experiments revealed that PALMD-deficient VSMCs were more susceptible to high phosphate-induced calcification. Downregulation of SMAD6 expression and increased levels of p-SMAD2 were detected in Palmd+/- VSMCs, suggesting that transforming growth factor-β signaling may be involved in PALMD haploinsufficiency-induced vascular calcification. Our data revealed that PALMD haploinsufficiency causes ECM dysregulation in VSMCs and aggravates vascular calcification. Our findings suggest that reduced PALMD expression is also linked to vascular calcification, and PALMD may be a potential therapeutic target for this disease. NEW & NOTEWORTHY We found that PALMD haploinsufficiency causes extracellular matrix dysregulation, reduced PALMD expression links to vascular calcification, and PALMD mutations may lead to the risk of both calcific aortic valve stenosis and vascular calcification.

背景:PALMD表达的降低与主动脉瓣狭窄钙化的发生密切相关;然而,PALMD在血管钙化中的作用仍然未知:方法:收集小鼠的钙化动脉以检测PALMD的表达。方法:收集小鼠钙化动脉以检测PALMD的表达,并建立杂合子Palmd基因敲除(Palmd+/-)小鼠以探索PALMD在肾脏次全切除术诱导的血管钙化中的作用。应用RNA测序技术检测Palmd+/-小鼠主动脉的分子变化。使用原代Palmd+/-血管平滑肌细胞(VSMC)或通过短干扰RNA(siRNA)沉默PALMD的VSMC分析PALMD在表型变化和钙化中的功能:结果:PALMD单倍体缺陷会加重肾次全切诱导的血管钙化。RNA测序分析表明,PALMD的缺失干扰了主动脉细胞外基质(ECM)的合成和降解,包括胶原和基质金属蛋白酶(Col6a6、Mmp2、Mmp9等)。体外实验显示,缺乏 PALMD 的 VSMC 更易受高磷酸盐诱导的钙化影响。在Palmd+/- VSMCs中检测到SMAD6表达下调和p-SMAD2水平升高,这表明TGF-β信号传导可能参与了PALMD单倍体缺陷诱导的血管钙化:我们的数据显示,PALMD单倍体缺陷会导致VSMCs中的ECM失调,并加剧血管钙化。我们的研究结果表明,PALMD表达的减少也与血管钙化有关,PALMD可能是该疾病的潜在治疗靶点。
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引用次数: 0
Deubiquitinases in skeletal muscle - The Underappreciated Side of the Ubiquitination Coin. 骨骼肌中的去泛素酶--泛素化硬币中未被重视的一面。
IF 5 2区 生物学 Q2 CELL BIOLOGY Pub Date : 2024-09-30 DOI: 10.1152/ajpcell.00553.2024
Wayne X Du, Craig A Goodman, Paul Gregorevic

Ubiquitination is a post-translational modification that plays important roles in regulating protein stability, function, localization, and protein-protein interactions. Proteins are ubiquitinated via a process involving specific E1 activating enzymes, E2 conjugating enzymes, and E3 ligases. Simultaneously, protein ubiquitination is opposed by deubiquitinating enzymes (DUBs). DUB-mediated deubiquitination can change protein function or fate and recycle ubiquitin to maintain the free ubiquitin pool. Approximately 100 DUBs have been identified in the mammalian genome, and characterized into seven classes (USP, OTU, UCH, MJD, JAMM, MINDY and ZUP classes). Of these 100 DUBs, there has only been relatively limited investigation of 19 specifically in skeletal muscle cells, in vitro or in vivo, using overexpression, knockdown, and knockout models. To date, evidence indicates roles for individual DUBs in regulating aspects of myogenesis, protein turnover, muscle mass, and muscle metabolism. However, the exact mechanism by which these DUBs act (i.e. the specific targets of these DUBs and the type of ubiquitin chains they target) is still largely unknown, underscoring how little we know about DUBs in skeletal muscle. This review endeavors to comprehensively summarize the current state of knowledge of the function of DUBs in skeletal muscle and highlight the opportunities for gaining a greater understanding through further research into this important area of skeletal muscle and ubiquitin biology.

泛素化是一种翻译后修饰,在调节蛋白质的稳定性、功能、定位以及蛋白质与蛋白质之间的相互作用方面发挥着重要作用。蛋白质泛素化的过程涉及特定的 E1 激活酶、E2 连接酶和 E3 连接酶。与此同时,去泛素化酶(DUB)也会对抗蛋白质的泛素化。DUB 介导的去泛素化可以改变蛋白质的功能或命运,并回收泛素以维持游离泛素池。目前已在哺乳动物基因组中鉴定出约 100 种 DUB,并将其分为七类(USP、OTU、UCH、MJD、JAMM、MINDY 和 ZUP 类)。在这 100 种 DUBs 中,只有 19 种在体外或体内通过过表达、基因敲除和基因剔除模型专门针对骨骼肌细胞进行了相对有限的研究。迄今为止,有证据表明,个别 DUBs 在调节肌肉生成、蛋白质周转、肌肉质量和肌肉代谢等方面发挥作用。然而,这些 DUBs 作用的确切机制(即这些 DUBs 的特定靶标及其靶标泛素链的类型)在很大程度上仍不为人所知,这突出表明我们对骨骼肌中的 DUBs 知之甚少。本综述力图全面总结目前对骨骼肌中 DUBs 功能的认识,并强调通过进一步研究骨骼肌和泛素生物学这一重要领域来加深理解的机会。
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引用次数: 0
ZNF197-AS1/miR-425/GABARAPL1 Axis: A Novel Regulatory Mechanism in Uveal Melanoma. ZNF197-AS1/miR-425/GABARAPL1轴:葡萄膜黑色素瘤的新型调控机制
IF 5 2区 生物学 Q2 CELL BIOLOGY Pub Date : 2024-09-23 DOI: 10.1152/ajpcell.00457.2024
Chao Zhang, Shuai Wu

This study investigates the role of the long non-coding RNA (lncRNA) ZNF197-AS1 in uveal melanoma (UM), focusing on its function within a competing endogenous RNA (ceRNA) network. Utilizing the UM-related TCGA dataset, we analyzed the expression levels of ZNF197-AS1 and its correlation with miR-425 and GABARAPL1, an essential autophagy-related gene. Our analysis revealed that ZNF197-AS1 acts as a ceRNA by competitively binding to miR-425, resulting in the upregulation of GABARAPL1. This interaction plays a crucial role in the growth and metastasis of UM. The expression of GABARAPL1 showed a strong correlation with the clinical outcomes of UM patients. Furthermore, in vitro assays confirmed that ZNF197-AS1 impedes UM cell proliferation, migration, and invasion by modulating the miR-425/GABARAPL1 axis. These findings suggest that ZNF197-AS1 can effectively inhibit UM progression through this ceRNA regulatory network. This study provides valuable insights into the molecular mechanisms underlying UM and highlights the potential of targeting the ZNF197-AS1/miR-425/GABARAPL1 axis as a therapeutic strategy for UM.

本研究调查了长非编码 RNA(lncRNA)ZNF197-AS1 在葡萄膜黑色素瘤(UM)中的作用,重点研究了它在竞争性内源性 RNA(ceRNA)网络中的功能。利用 UM 相关的 TCGA 数据集,我们分析了 ZNF197-AS1 的表达水平及其与 miR-425 和 GABARAPL1(一种重要的自噬相关基因)的相关性。我们的分析表明,ZNF197-AS1 通过与 miR-425 竞争性结合,起到了 ceRNA 的作用,从而导致 GABARAPL1 的上调。这种相互作用在 UM 的生长和转移中起着至关重要的作用。GABARAPL1 的表达与 UM 患者的临床预后密切相关。此外,体外实验证实 ZNF197-AS1 通过调节 miR-425/GABARAPL1 轴阻碍了 UM 细胞的增殖、迁移和侵袭。这些发现表明,ZNF197-AS1 可通过这一 ceRNA 调控网络有效抑制 UM 的发展。这项研究为研究UM的分子机制提供了有价值的见解,并凸显了靶向ZNF197-AS1/miR-425/GABARAPL1轴作为UM治疗策略的潜力。
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引用次数: 0
The water channels Aquaporin-1 and Aquaporin-3 interact with and affect the cell polarity protein Scribble in 3D in vitro models of breast cancer 在乳腺癌三维体外模型中,水通道 Aquaporin-1 和 Aquaporin-3 与细胞极性蛋白 Scribble 相互作用并对其产生影响
IF 5.5 2区 生物学 Q2 CELL BIOLOGY Pub Date : 2024-09-16 DOI: 10.1152/ajpcell.00094.2024
Sarannya Edamana, Frédéric H. Login, Andreas Riishede, Vibeke S. Dam, Teresa Kirkegaard, Lene N. Nejsum
American Journal of Physiology-Cell Physiology, Ahead of Print.
美国生理学-细胞生理学杂志》,提前出版。
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引用次数: 0
Bone Marrow Stromal Cells Enhance Differentiation of Acute Myeloid Leukemia Induced by Pyrimidine Synthesis Inhibitors 骨髓基质细胞能增强嘧啶合成抑制剂诱导的急性髓性白血病的分化能力
IF 5.5 2区 生物学 Q2 CELL BIOLOGY Pub Date : 2024-09-16 DOI: 10.1152/ajpcell.00413.2024
Tomislav Smoljo, Hrvoje Lalic, Vilma Dembitz, Barbara Tomic, Josip Batinic, Radovan Vrhovac, Antonio Bedalov, Dora Visnjic
American Journal of Physiology-Cell Physiology, Ahead of Print.
美国生理学-细胞生理学杂志》,提前出版。
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引用次数: 0
Dual effects of targeting neuropilin-1 in lenvatinib-resistant hepatocellular carcinoma: inhibition of tumor growth and angiogenesis 在来伐替尼耐药肝细胞癌中靶向神经肽-1的双重作用:抑制肿瘤生长和血管生成
IF 5.5 2区 生物学 Q2 CELL BIOLOGY Pub Date : 2024-09-09 DOI: 10.1152/ajpcell.00511.2024
Junjie Ao, Na Qiang, Hiroaki Kanzaki, Masato Nakamura, Risa Kakiuchi, Jiaqi Zhang, Ryuta Kojima, Keisuke Koroki, Masanori Inoue, Naoya Kanogawa, Ryo Nakagawa, Takayuki Kondo, Sadahisa Ogasawara, Shingo Nakamoto, Ryosuke Muroyama, Jun Kato, Naoya Kato
American Journal of Physiology-Cell Physiology, Ahead of Print.
美国生理学-细胞生理学杂志》,提前出版。
{"title":"Dual effects of targeting neuropilin-1 in lenvatinib-resistant hepatocellular carcinoma: inhibition of tumor growth and angiogenesis","authors":"Junjie Ao, Na Qiang, Hiroaki Kanzaki, Masato Nakamura, Risa Kakiuchi, Jiaqi Zhang, Ryuta Kojima, Keisuke Koroki, Masanori Inoue, Naoya Kanogawa, Ryo Nakagawa, Takayuki Kondo, Sadahisa Ogasawara, Shingo Nakamoto, Ryosuke Muroyama, Jun Kato, Naoya Kato","doi":"10.1152/ajpcell.00511.2024","DOIUrl":"https://doi.org/10.1152/ajpcell.00511.2024","url":null,"abstract":"American Journal of Physiology-Cell Physiology, Ahead of Print. <br/>","PeriodicalId":7585,"journal":{"name":"American journal of physiology. Cell physiology","volume":null,"pages":null},"PeriodicalIF":5.5,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Pik3c3 Expression Profiling in the Mouse Kidney and Its Role in Proximal Tubule Cell Physiology 小鼠肾脏中 Pik3c3 的表达谱分析及其在近端肾小管细胞生理学中的作用
IF 5.5 2区 生物学 Q2 CELL BIOLOGY Pub Date : 2024-09-09 DOI: 10.1152/ajpcell.00564.2023
Ting Liu, Jialing Yuan, Caihong Dai, Mystie X Chen, Jerry Fan, Benjamin D. Humphreys, David J. Fulton, Daniel T. Kleven, Xingjun Fan, Zheng Dong, Jian-Kang Chen
American Journal of Physiology-Cell Physiology, Ahead of Print.
美国生理学-细胞生理学杂志》,提前出版。
{"title":"Pik3c3 Expression Profiling in the Mouse Kidney and Its Role in Proximal Tubule Cell Physiology","authors":"Ting Liu, Jialing Yuan, Caihong Dai, Mystie X Chen, Jerry Fan, Benjamin D. Humphreys, David J. Fulton, Daniel T. Kleven, Xingjun Fan, Zheng Dong, Jian-Kang Chen","doi":"10.1152/ajpcell.00564.2023","DOIUrl":"https://doi.org/10.1152/ajpcell.00564.2023","url":null,"abstract":"American Journal of Physiology-Cell Physiology, Ahead of Print. <br/>","PeriodicalId":7585,"journal":{"name":"American journal of physiology. Cell physiology","volume":null,"pages":null},"PeriodicalIF":5.5,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
KLF3 impacts insulin sensitivity and glucose uptake in skeletal muscle KLF3 影响骨骼肌的胰岛素敏感性和葡萄糖摄取量
IF 5.5 2区 生物学 Q2 CELL BIOLOGY Pub Date : 2024-09-09 DOI: 10.1152/ajpcell.00085.2024
Shuying Fu, Xiaocheng Gong, Keying Liang, Ke Ding, Li Qiu, Huice Cen, Hongli Du
American Journal of Physiology-Cell Physiology, Ahead of Print.
美国生理学-细胞生理学杂志》,提前出版。
{"title":"KLF3 impacts insulin sensitivity and glucose uptake in skeletal muscle","authors":"Shuying Fu, Xiaocheng Gong, Keying Liang, Ke Ding, Li Qiu, Huice Cen, Hongli Du","doi":"10.1152/ajpcell.00085.2024","DOIUrl":"https://doi.org/10.1152/ajpcell.00085.2024","url":null,"abstract":"American Journal of Physiology-Cell Physiology, Ahead of Print. <br/>","PeriodicalId":7585,"journal":{"name":"American journal of physiology. Cell physiology","volume":null,"pages":null},"PeriodicalIF":5.5,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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