Journal of cellular biochemistry最新文献

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RETRACTION: Fibroblast Growth Factor-2 Promotes Catabolism via FGFR1-Ras-Raf-MEK1/2-ERK1/2 Axis That Coordinates With the PKCδ Pathway in Human Articular Chondrocytes. 回归:成纤维细胞生长因子-2 通过 FGFR1-Ras-Raf-MEK1/2-ERK1/2 轴促进分解代谢,该轴与人关节软骨细胞中的 PKCδ 通路相协调。
IF 3 3区 生物学
Journal of cellular biochemistry Pub Date : 2024-12-01 Epub Date: 2024-10-08 DOI: 10.1002/jcb.30665
{"title":"RETRACTION: Fibroblast Growth Factor-2 Promotes Catabolism via FGFR1-Ras-Raf-MEK1/2-ERK1/2 Axis That Coordinates With the PKCδ Pathway in Human Articular Chondrocytes.","authors":"","doi":"10.1002/jcb.30665","DOIUrl":"10.1002/jcb.30665","url":null,"abstract":"<p><strong>Retraction: </strong>D. Yan, D. Chen, and H.-J. Im, \"Fibroblast Growth Factor-2 Promotes Catabolism via FGFR1-Ras-Raf-MEK1/2-ERK1/2 Axis That Coordinates With the PKCδ Pathway in Human Articular Chondrocytes,\" Journal of Cellular Biochemistry 113, no. 9 (2012): 2856-2865, https://doi.org/10.1002/jcb.24160. The above article, published online on 5 April 2012 in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the journal Editor-in-Chief, Christian Behl; and Wiley Periodicals LLC. The retraction has occurred due to concerns related to the data presented in the article raised by the Office of Research Compliance at Rush University Medical Center following an investigation jointly conducted by Rush University and the Jesse Brown Veterans Affairs Medical Center (JBVAMC). Specifically, image elements of the experimental data in Figures 2, 4 A and 5 C were found to have been used by the same author(s) for publication elsewhere in a different scientific context. The corresponding author, Dr. Hee-Jeong Im Sampen, has been informed of the decision to retract but did not agree with it, as she is confident that any errors in the publication do not impact the reliability of the paper's findings. She also advised the editors that she stands ready to cooperate fully to make any necessary corrections. However, the article is retracted as the editors lost trust in the accuracy of the data and consider the conclusions invalid.</p>","PeriodicalId":15219,"journal":{"name":"Journal of cellular biochemistry","volume":" ","pages":"e30665"},"PeriodicalIF":3.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142390754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
FKBP51, a multitasker in protein function, pathway activity, and physiology. FKBP51,蛋白质功能、通路活动和生理学中的多面手。
IF 3 3区 生物学
Journal of cellular biochemistry Pub Date : 2024-12-01 DOI: 10.1002/jcb.30448
Mario D Galigniana, Theo Rein
{"title":"FKBP51, a multitasker in protein function, pathway activity, and physiology.","authors":"Mario D Galigniana, Theo Rein","doi":"10.1002/jcb.30448","DOIUrl":"https://doi.org/10.1002/jcb.30448","url":null,"abstract":"","PeriodicalId":15219,"journal":{"name":"Journal of cellular biochemistry","volume":"125 12","pages":"e30448"},"PeriodicalIF":3.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142836495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Implications of intrinsic disorder and functional proteomics in the merkel cell polyomavirus life cycle. merkel细胞多瘤病毒生命周期内在障碍和功能蛋白质组学的意义。
IF 3 3区 生物学
Journal of cellular biochemistry Pub Date : 2024-12-01 Epub Date: 2023-10-09 DOI: 10.1002/jcb.30485
Nathan Lanclos, Peter Radulovic, Jackson Bland, Valentin Oganisyan, Kelton Radefeld, Vladimir N Uversky
{"title":"Implications of intrinsic disorder and functional proteomics in the merkel cell polyomavirus life cycle.","authors":"Nathan Lanclos, Peter Radulovic, Jackson Bland, Valentin Oganisyan, Kelton Radefeld, Vladimir N Uversky","doi":"10.1002/jcb.30485","DOIUrl":"10.1002/jcb.30485","url":null,"abstract":"<p><p>Infection with merkel cell polyomavirus (MCPyV) is implicated in the development of merkel cell carcinoma (MCC), a rare but aggressive skin cancer. MCC has a mortality rate near 50%, and incidence has been rapidly increasing in recent decades, making development of improved treatment strategies critical to addressing its growing social burden. The parallel increasing necessity for novel research to better understand MCPyV pathogenesis has prompted numerous studies in recent years, yet the role of intrinsic disorder in MCPyV proteins remains unexplored. This study carries out computational characterization of intrinsic disorder within the MCPyV proteome and suggests mechanisms that may contribute to the oncogenicity of the virus to invade and hijack host immune systems. Our analysis finds that significant levels of intrinsic disorder are present in proteins LT, ALTO, 57kT, and VP1, and suggests that regions of sT may also contain large, disordered regions. The investigation further shows correlation of disorder propensity with the outputs for functional predictors of eukaryotic linear motifs (ELMs), molecular recognition features (MoRFs), and propensity for liquid-liquid phase separation (LLPS). Our findings indicate that MCPyV may use disorder and phase condensation to alter viral function that may accentuate or provide the basis for oncogenic activities. It is intended that this study will inform future experimental validation efforts around the phase separation capacity of MCPyV and its host protein-protein interactions. Furthermore, we hope to inform other investigators on the potential role of disorder in the MCPyV life cycle toward ultimately progressing the development of novel therapeutic agents.</p>","PeriodicalId":15219,"journal":{"name":"Journal of cellular biochemistry","volume":" ","pages":"e30485"},"PeriodicalIF":3.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41182626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Alternative splicing of FKBP5 gene exerts control over T lymphocyte expansion. FKBP5 基因的交替剪接控制着 T 淋巴细胞的扩增。
IF 3 3区 生物学
Journal of cellular biochemistry Pub Date : 2024-12-01 Epub Date: 2023-01-16 DOI: 10.1002/jcb.30364
Laura Marrone, Massimo D'Agostino, Elena Cesaro, Valeria di Giacomo, Simona Urzini, Maria Fiammetta Romano, Simona Romano
{"title":"Alternative splicing of FKBP5 gene exerts control over T lymphocyte expansion.","authors":"Laura Marrone, Massimo D'Agostino, Elena Cesaro, Valeria di Giacomo, Simona Urzini, Maria Fiammetta Romano, Simona Romano","doi":"10.1002/jcb.30364","DOIUrl":"10.1002/jcb.30364","url":null,"abstract":"<p><p>FKBP51 is constitutively expressed by immune cells. As other FKBP family members, FKBP51 acts as a coreceptor for the natural products FK506 and rapamycin, which exhibit immunosuppressive effects. However, little is known about the intrinsic role of this large FKBP in the primary function of lymphocytes, that is, the adaptive immune response against foreign antigens, for example, pathogens. This paper aimed to investigate whether FKBP51 expression was modulated during lymphocyte activation. Moreover, as we recently identified a splicing isoform of FKBP51, namely FKBP51s, we also measured this splice protein, along with the canonical one, at different times of a peripheral blood mononuclear cell culture stimulated via T cell receptor. Our results show that the two FKBP51 isoforms were alternatively induced during the proliferative burst. Canonical FKBP51 increased in the time window between 48 and 96 h and its expression levels correlated with cyclin D levels. FKBP51s transiently increased earlier, at 24-36 h to reappearing later, at 120 h, when cyclin D expression returned at resting levels and proliferation ceased. Interestingly, within these two specific timeframes, FKBP51s accumulated in the nucleus. Here FKBP51s colocalized with the Foxp3 transcription factor at 36 h. Regulatory T cell (Treg) counts significantly decreased when FKBP51s was downmodulated. The coculture suppression assay suggested that FKBP51s supports the suppressive capability of Tregs. At 120 h, chromatin immunoprecipitation experiments found FKBP51s linked to CCND1 gene, suggesting a possible effect on gene transcription regulation, as previously demonstrated in melanoma. In conclusion, our study shows that FKBP5 isoforms are upregulated during lymphocyte activation, albeit on different timeframes. The activation of canonical FKBP51 coincides with proliferation hallmarks; FKBP5 splicing occurs early to sustain Treg development and late when proliferation ceases.</p>","PeriodicalId":15219,"journal":{"name":"Journal of cellular biochemistry","volume":" ","pages":"e30364"},"PeriodicalIF":3.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10534484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Comprehensive analysis of liquid-liquid phase separation propensities of HSV-1 proteins and their interaction with host factors. HSV-1蛋白液液相分离特性及其与宿主因子相互作用的综合分析。
IF 3 3区 生物学
Journal of cellular biochemistry Pub Date : 2024-12-01 Epub Date: 2023-10-05 DOI: 10.1002/jcb.30480
Sushma Subedi, Niharika Nag, Harish Shukla, Aditya K Padhi, Timir Tripathi
{"title":"Comprehensive analysis of liquid-liquid phase separation propensities of HSV-1 proteins and their interaction with host factors.","authors":"Sushma Subedi, Niharika Nag, Harish Shukla, Aditya K Padhi, Timir Tripathi","doi":"10.1002/jcb.30480","DOIUrl":"10.1002/jcb.30480","url":null,"abstract":"<p><p>In recent years, it has been shown that the liquid-liquid phase separation (LLPS) of virus proteins plays a crucial role in their life cycle. It promotes the formation of viral replication organelles, concentrating viral components for efficient replication and facilitates the assembly of viral particles. LLPS has emerged as a crucial process in the replication and assembly of herpes simplex virus-1 (HSV-1). Recent studies have identified several HSV-1 proteins involved in LLPS, including the myristylated tegument protein UL11 and infected cell protein 4; however, a complete proteome-level understanding of the LLPS-prone HSV-1 proteins is not available. We provide a comprehensive analysis of the HSV-1 proteome and explore the potential of its proteins to undergo LLPS. By integrating sequence analysis, prediction algorithms and an array of tools and servers, we identified 10 HSV-1 proteins that exhibit high LLPS potential. By analysing the amino acid sequences of the LLPS-prone proteins, we identified specific sequence motifs and enriched amino acid residues commonly found in LLPS-prone regions. Our findings reveal a diverse range of LLPS-prone proteins within the HSV-1, which are involved in critical viral processes such as replication, transcriptional regulation and assembly of viral particles. This suggests that LLPS might play a crucial role in facilitating the formation of specialized viral replication compartments and the assembly of HSV-1 virion. The identification of LLPS-prone proteins in HSV-1 opens up new avenues for understanding the molecular mechanisms underlying viral pathogenesis. Our work provides valuable insights into the LLPS landscape of HSV-1, highlighting potential targets for further experimental validation and enhancing our understanding of viral replication and pathogenesis.</p>","PeriodicalId":15219,"journal":{"name":"Journal of cellular biochemistry","volume":" ","pages":"e30480"},"PeriodicalIF":3.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41132124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
RETRACTION: Upregulation of LncRNA SnoRNA Host Gene 6 Regulates NUAK Family SnF1-like Kinase-1 Expression by Competitively Binding MicroRNA-125b and Interacting with Snail1/2 in Bladder Cancer.
IF 3 3区 生物学
Journal of cellular biochemistry Pub Date : 2024-12-01 DOI: 10.1002/jcb.30676
{"title":"RETRACTION: Upregulation of LncRNA SnoRNA Host Gene 6 Regulates NUAK Family SnF1-like Kinase-1 Expression by Competitively Binding MicroRNA-125b and Interacting with Snail1/2 in Bladder Cancer.","authors":"","doi":"10.1002/jcb.30676","DOIUrl":"10.1002/jcb.30676","url":null,"abstract":"<p><strong>Retraction: </strong>C. Wang, W. Tao, S. Ni, Q. Chen, \"Upregulation of LncRNA SnoRNA Host Gene 6 Regulates NUAK Family SnF1-like Kinase-1 Expression by Competitively Binding MicroRNA-125b and Interacting with Snail1/2 in Bladder Cancer,\" Journal of Cellular Biochemistry 120, no. 1 (2019): 357-367, https://doi.org/10.1002/jcb.27387. The above article, published online on 30 August 2018 in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the authors; the journal Editor-in-Chief, Christian Behl; and Wiley Periodicals LLC. The retraction has been agreed to concerns raised by third parties on the data presented in the article. Specifically, multiple image elements in Figures 1c, 2c, 2e, 3a, 3b, and 3c were found to have been published elsewhere and in a different scientific context. Accordingly, the editors consider the conclusions of this article to be invalid.</p>","PeriodicalId":15219,"journal":{"name":"Journal of cellular biochemistry","volume":" ","pages":"e30676"},"PeriodicalIF":3.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142769305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Mitochondrial-nuclear communication by FKBP51 shuttling. 通过 FKBP51 穿梭进行线粒体-核交流
IF 3 3区 生物学
Journal of cellular biochemistry Pub Date : 2024-12-01 Epub Date: 2023-02-23 DOI: 10.1002/jcb.30386
Nadia Zgajnar, Mariana Lagadari, Luciana I Gallo, Graciela Piwien-Pilipuk, Mario D Galigniana
{"title":"Mitochondrial-nuclear communication by FKBP51 shuttling.","authors":"Nadia Zgajnar, Mariana Lagadari, Luciana I Gallo, Graciela Piwien-Pilipuk, Mario D Galigniana","doi":"10.1002/jcb.30386","DOIUrl":"10.1002/jcb.30386","url":null,"abstract":"<p><p>The HSP90-binding immunophilin FKBP51 is a soluble protein that shows high homology and structural similarity with FKBP52. Both immunophilins are functionally divergent and often show antagonistic actions. They were first described in steroid receptor complexes, their exchange in the complex being the earliest known event in steroid receptor activation upon ligand binding. In addition to steroid-related events, several pleiotropic actions of FKBP51 have emerged during the last years, ranging from cell differentiation and apoptosis to metabolic and psychiatric disorders. On the other hand, mitochondria play vital cellular roles in maintaining energy homeostasis, responding to stress conditions, and affecting cell cycle regulation, calcium signaling, redox homeostasis, and so forth. This is achieved by proteins that are encoded in both the nuclear genome and mitochondrial genes. This implies active nuclear-mitochondrial communication to maintain cell homeostasis. Such communication involves factors that regulate nuclear and mitochondrial gene expression affecting the synthesis and recruitment of mitochondrial and nonmitochondrial proteins, and/or changes in the functional state of the mitochondria itself, which enable mitochondria to recover from stress. FKBP51 has emerged as a serious candidate to participate in these regulatory roles since it has been unexpectedly found in mitochondria showing antiapoptotic effects. Such localization involves the tetratricopeptide repeats domains of the immunophilin and not its intrinsic enzymatic activity of peptidylprolyl-isomerase. Importantly, FKBP51 abandons the mitochondria and accumulates in the nucleus upon cell differentiation or during the onset of stress. Nuclear FKBP51 enhances the enzymatic activity of telomerase. The mitochondrial-nuclear trafficking is reversible, and certain situations such as viral infections promote the opposite trafficking, that is, FKBP51 abandons the nucleus and accumulates in mitochondria. In this article, we review the latest findings related to the mitochondrial-nuclear communication mediated by FKBP51 and speculate about the possible implications of this phenomenon.</p>","PeriodicalId":15219,"journal":{"name":"Journal of cellular biochemistry","volume":" ","pages":"e30386"},"PeriodicalIF":3.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10747816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Molecular Mechanisms of Curdlan-Induced Suppression of NFATc1 Expression in Osteoclasts. Curdlan 抑制破骨细胞中 NFATc1 表达的分子机制
IF 3 3区 生物学
Journal of cellular biochemistry Pub Date : 2024-11-28 DOI: 10.1002/jcb.30682
Ayaka Koga, Yoshie Nagai-Yoshioka, Ryota Yamasaki, Yoshiyuki Adachi, Wataru Fujii, Wataru Ariyoshi
{"title":"Molecular Mechanisms of Curdlan-Induced Suppression of NFATc1 Expression in Osteoclasts.","authors":"Ayaka Koga, Yoshie Nagai-Yoshioka, Ryota Yamasaki, Yoshiyuki Adachi, Wataru Fujii, Wataru Ariyoshi","doi":"10.1002/jcb.30682","DOIUrl":"https://doi.org/10.1002/jcb.30682","url":null,"abstract":"<p><p>Osteoclasts derived from hematopoietic stem cells express immunoreceptors on their cell surface. Previously, we showed that the β-glucan curdlan suppressed osteoclastogenesis via binding to dectin-1, a pattern recognition receptor. Curdlan negatively regulates osteoclast differentiation and bone resorption capacity by suppressing the expression of nuclear factor of activated T cells 1 (NFATc1), a master factor for osteoclast differentiation, in a dectin-1-dependent manner; however, the mechanism involved in this process has not yet been fully elucidated. In this study, we aimed to elucidate the molecular mechanism involved in the suppression of RANKL-induced osteoclast differentiation by curdlan. Real-time RT-qPCR results showed that curdlan suppressed the expression of NFATc1 in cells of the osteoclast progenitor cell line RAW264.7 overexpressing dectin-1 (d-RAW cells), without altering the expression of negative regulators. Therefore, we examined the effect of curdlan on the NF-κB pathway, which is important for the induction of NFATc1 expression. Western blot analysis results showed that curdlan addition suppressed RANKL-induced NF-κB activation in the vector control line (c-RAW) cells with low expression of dectin-1, in d-RAW cells, and the parental RAW264.7 (RAW) cells. The results of tartrate-resistant alkaline phosphatase staining and real-time RT-qPCR showed that curdlan addition suppressed osteoclast differentiation in RAW cells, suggesting the presence of a dectin-1-independent modification system. Finally, we focused on the complement receptor 3 (CR3), which binds β-glucan, and revealed that blocking the binding of β-glucan to the CD11b molecule, a component of CR3, by neutralizing antibody, recovered the suppression of IκBα degradation by curdlan. These results suggest that the suppression of osteoclast differentiation by curdlan involves not only the dectin-1-dependent pathway but also the negative regulation of NFATc1 via modification of the NF-κB pathway via CR3 recognition. The results of this study may aid to establish treatment methods for metabolic bone diseases and inflammatory bone destruction and to clarify their pathogenesis.</p>","PeriodicalId":15219,"journal":{"name":"Journal of cellular biochemistry","volume":" ","pages":"e30682"},"PeriodicalIF":3.0,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142739529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Circ-ECH1 May Compete With miR-708-5p to Regulate Ntrk2 in Bronchopulmonary Dysplasia. Circ-EC1可能与miR-708-5p竞争调控支气管肺发育不良中的Ntrk2
IF 3 3区 生物学
Journal of cellular biochemistry Pub Date : 2024-11-25 DOI: 10.1002/jcb.30678
Hanrong Cheng, Dongcai Li, Yuming Tang, Tianyong Hu, Benqing Wu
{"title":"Circ-ECH1 May Compete With miR-708-5p to Regulate Ntrk2 in Bronchopulmonary Dysplasia.","authors":"Hanrong Cheng, Dongcai Li, Yuming Tang, Tianyong Hu, Benqing Wu","doi":"10.1002/jcb.30678","DOIUrl":"https://doi.org/10.1002/jcb.30678","url":null,"abstract":"<p><p>Bronchopulmonary dysplasia (BPD) affects patients' quality of life. Circular RNAs participated in BPD. However, circ-ECH1's role in BPD has not been reported yet. This study aimed to explore the role and mechanism of circ-ECH1 in BPD. Hyperoxia-treated type II alveolar epithelial cells (L2 cells) were used as the in vitro BPD model. CCK-8, flow cytometry, and reactive oxygen species (ROS) were used to evaluate cell viability. Fluorescence in situ hybridization confirmed the subcellular localization. Circ-ECH1 overexpression (or inhibited) and miR-708-5p mimics were used to investigate the roles of circ-ECH1 and miR-708-5p in BPD. Quantitative reverse-transcription polymerase reaction (qRT-PCR) detected the expressions of circ-ECH1, miR-708-5p, and neurotrophic receptor tyrosine kinase 2 (Ntrk2). Ntrk2 expression was evaluated by Western blot analysis. Changes in lung tissues were evaluated by hematoxylin and eosin staining. Pulmonary fibrosis was examined by Mason staining. TUNEL staining was performed to evaluate cell apoptosis in lung tissues. RNA sequencing was performed in the lung tissues of BPD rats. The binding between circ-ECH1 and miR-708-5p was confirmed through dual luciferase activity. Hyperoxia reduced cell viability and increased cell apoptosis and ROS accumulation. In addition, hyperoxia decreased the expression levels of circ-ECH1, which is mainly located in the cytoplasm. Circ-ECH1 overexpression increased cell viability but reduced cell apoptosis and ROS accumulation. On the contrary, interference with circ-ECH1 further promoted cell apoptosis and reduced cell activity. Furthermore, circ-ECH1 overexpression reduced the incidence of pulmonary fibrosis and lung cell apoptosis. RNA sequencing, followed by qRT-PCR, confirmed that the expressions of Ntrk2 and miR-708-5p were affected by circ-ECH1. miR-708-5p mimics reversed the role of circ-ECH1 in the BPD. Mechanistically, circ-ECH1 may bind with miR-708-5p to regulate Ntrk2 expression. Circ-ECH1 may compet with miR-708-5p to regulate Ntrk2 expression in BPD. The findings provided a new target for BPD treatment.</p>","PeriodicalId":15219,"journal":{"name":"Journal of cellular biochemistry","volume":" ","pages":"e30678"},"PeriodicalIF":3.0,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142716294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Reduction of Chemoresistance by Claudin-14-Targeting Peptide in Human Colorectal Cancer Cells. Claudin-14靶向肽降低人类结直肠癌细胞的抗药性
IF 3 3区 生物学
Journal of cellular biochemistry Pub Date : 2024-11-20 DOI: 10.1002/jcb.30675
Yuko Mizukami, Shotaro Hashimoto, Tomoka Ando, Yoshinobu Ishikawa, Hiroaki Eguchi, Yuta Yoshino, Toshiyuki Matsunaga, Nobuhisa Matsuhashi, Akira Ikari
{"title":"Reduction of Chemoresistance by Claudin-14-Targeting Peptide in Human Colorectal Cancer Cells.","authors":"Yuko Mizukami, Shotaro Hashimoto, Tomoka Ando, Yoshinobu Ishikawa, Hiroaki Eguchi, Yuta Yoshino, Toshiyuki Matsunaga, Nobuhisa Matsuhashi, Akira Ikari","doi":"10.1002/jcb.30675","DOIUrl":"https://doi.org/10.1002/jcb.30675","url":null,"abstract":"<p><p>The expression of claudins (CLDNs), major components of tight junctions (TJs), is abnormal in various solid tumors. CLDN14 is highly expressed in human colorectal cancer (CRC) tissues and confers chemoresistance. CLDN14 may become a novel therapeutic target for CRC, but CLDN14-targeting drugs have not been developed. Here, we searched for a CLDN14-targeting peptide, which can suppress CLDN14 expression and chemoresistance using human CRC-derived DLD-1 and LoVo cells. Among some short peptides which mimic the second extracellular loop structure of CLDN14, PSGMK most strongly suppressed the protein expression of CLDN14. The mRNA expression of other endogenous TJ components was unchanged by PSGMK. The PSGMK-induced reduction of CLDN14 protein was inhibited by chloroquine, a lysosome inhibitor, and monodansylcadaverine, a clathrin-dependent endocytosis inhibitor, indicating that PSGMK may enhance endocytosis and lysosomal degradation of CLDN14. In a three-dimensional culture model, the oxidative stress was significantly reduced by PSGMK, whereas hypoxia stress was not. Furthermore, the expression levels of nuclear factor erythroid 2-related factor 2, an oxidative stress response factor, and its target genes were decreased by PSGMK. These results suggest that PSGMK relieves stress conditions in spheroids. The cell viability of spheroids was decreased by anticancer drugs such as doxorubicin and oxaliplatin, which was exaggerated by the cotreatment with PSGMK. Our data indicate that CLDN14-targeting peptide, PSGMK has an anti-chemoresistance effect in CRC cells.</p>","PeriodicalId":15219,"journal":{"name":"Journal of cellular biochemistry","volume":" ","pages":"e30675"},"PeriodicalIF":3.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142675846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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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