Cell Stress & ChaperonesPub Date : 2024-12-01Epub Date: 2024-11-19DOI: 10.1016/j.cstres.2024.11.005
Yifan Lu , Jing Zhou , Hong Wang , Hua Gao , Eryu Ning , Zhiqiang Shao , Yuefeng Hao , Xing Yang
{"title":"Endoplasmic reticulum stress-mediated apoptosis and autophagy in osteoarthritis: From molecular mechanisms to therapeutic applications","authors":"Yifan Lu , Jing Zhou , Hong Wang , Hua Gao , Eryu Ning , Zhiqiang Shao , Yuefeng Hao , Xing Yang","doi":"10.1016/j.cstres.2024.11.005","DOIUrl":"10.1016/j.cstres.2024.11.005","url":null,"abstract":"<div><div>Osteoarthritis (OA) is characterized primarily by the degeneration of articular cartilage, with a high prevalence and disability rate. The functional phenotype of chondrocytes, as the sole cell type within cartilage, is vital for OA progression. Due to the avascular nature of cartilage and its limited regenerative capacity, repair following injury poses significant challenges. Various cellular stressors, including hypoxia, nutrient deprivation, oxidative stress, and collagen mutations, can lead to the accumulation of misfolded proteins in the endoplasmic reticulum (ER), resulting in ER stress (ERS). In response to restore ER homeostasis as well as cellular vitality and function, a series of adaptive mechanisms are triggered, including the unfolded protein response, ER-associated degradation, and ER-phagy. Prolonged or severe ERS may exceed the adaptive capacity of cells, leading to dysregulation in apoptosis and autophagy—key pathogenic factors contributing to chondrocyte damage and OA progression. This review examines the relationship between ERS in OA chondrocytes and both apoptosis and autophagy in order to identify potential therapeutic targets and strategies for prevention and treatment of OA.</div></div>","PeriodicalId":9684,"journal":{"name":"Cell Stress & Chaperones","volume":"29 6","pages":"Pages 805-830"},"PeriodicalIF":3.3,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11667160/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142686066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cell Stress & ChaperonesPub Date : 2024-12-01Epub Date: 2024-11-29DOI: 10.1016/j.cstres.2024.11.006
Xavier Jeanne , Zsolt Török , László Vigh , Chrisostomos Prodromou
{"title":"The role of the FKBP51–Hsp90 complex in Alzheimer’s disease: An emerging new drug target","authors":"Xavier Jeanne , Zsolt Török , László Vigh , Chrisostomos Prodromou","doi":"10.1016/j.cstres.2024.11.006","DOIUrl":"10.1016/j.cstres.2024.11.006","url":null,"abstract":"<div><div>With increasing age comes the inevitable decline in proteostasis, where chaperone and co-chaperone activity becomes imbalanced. These changes lead to global disturbances and pathogenic rewiring of the chaperone system into epichaperones consisting of protein networks that are ultimately dysfunctional. Such imbalances in proteostasis may favor mechanisms that can lead to neurological diseases, such as Alzheimer’s disease (AD). Consequently, there has been an increase in research activity toward finding small molecules that can re-balance the chaperone and co-chaperone machinery to counter the effects of disease resulting from old age. The Hsp90 co-chaperone FKBP51 has recently been identified as a protein whose induction not only increases with age but is elevated further in AD cells. Significantly, FKBP51 plays a role in the Hsp90-dependent isomerization of tau, which in turn influences its phosphorylation and susceptibility to aggregation. We hypothesize that FKBP51 is a major player that is able to elicit tauopathy in response to amyloid-beta senile plaques that damage the brain. We propose that elevated FKBP51 levels result in an abnormal FKBP51–Hsp90 activity that alters the normal processing of tau, which manifests as hyperphosphorylation and oligomerization of tau. Thus, the Hsp90–FKBP51 complex is emerging as a drug target against AD. In support of this idea, the structure of the FKBP51–Hsp90 complex was recently described, and significantly, the small-molecule dihydropyridine LA1011 was shown to be able to disrupt the Hsp90–FKBP51 complex. LA1011 was previously shown to effectively prevent neurodegeneration in the APPxPS1 AD transgenic mouse model. This review looks at the role of Hsp90 and its co-chaperones in AD with a focus on FKBP51.</div></div>","PeriodicalId":9684,"journal":{"name":"Cell Stress & Chaperones","volume":"29 6","pages":"Pages 792-804"},"PeriodicalIF":3.3,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11664163/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142766587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cell Stress & ChaperonesPub Date : 2024-12-01Epub Date: 2024-11-18DOI: 10.1016/j.cstres.2024.11.004
Xiaomin Gao , Xu Guo , Wenbo Yuan , Sunmin Jiang , Zihong Lu , Qing Luo , Yuan Zha , Ling Wang , Shu Li , Ke Wang , Xue Zhu , Ying Yao
{"title":"Pyrotinib induces cell death in HER2-positive breast cancer via triggering HSP90-dependent HER2 degradation and ROS/HSF-1-dependent oxidative DNA damage","authors":"Xiaomin Gao , Xu Guo , Wenbo Yuan , Sunmin Jiang , Zihong Lu , Qing Luo , Yuan Zha , Ling Wang , Shu Li , Ke Wang , Xue Zhu , Ying Yao","doi":"10.1016/j.cstres.2024.11.004","DOIUrl":"10.1016/j.cstres.2024.11.004","url":null,"abstract":"<div><div>HER2-positive breast cancer (HER2+ BC) is distinguished by its poor prognosis, propensity for early onset, and high risk of recurrence and metastasis. Consequently, anti-HER2-targeted therapy has emerged as a principal strategy in the treatment of this form of breast cancer. Pyrotinib, a novel irreversible pan-HER2 tyrosine kinase inhibitor, has brought fresh hope to patients with advanced HER2+ breast cancer. In this study, we conducted a comprehensive exploration of pyrotinib’s antitumor mechanism. The <em>in vitro</em> results showed that pyrotinib significantly inhibited SKBR3 cells viability and induced apoptosis by promoting HER2 endocytosis and ubiquitylation, leading to HER2 degradation through the displacement of HSP90 from HER2. Beyond targeting the HER2 signaling pathway, pyrotinib also induced DNA damage, which was mediated by the activation of the reactive oxygen species/heat shock factor 1 signaling pathway and the downregulation of proliferating cell nuclear antigen expression. Furthermore, the <em>in vivo</em> results demonstrated a pronounced anticancer effect of pyrotinib in the SKBR3 xenograft mouse model, concomitant with a reduction in HER2 expression. In summary, our findings provide novel insights into the mechanism of pyrotinib in the treatment of HER2+ BC.</div></div>","PeriodicalId":9684,"journal":{"name":"Cell Stress & Chaperones","volume":"29 6","pages":"Pages 777-791"},"PeriodicalIF":3.3,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11653144/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142680098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cell Stress & ChaperonesPub Date : 2024-12-01Epub Date: 2024-10-24DOI: 10.1016/j.cstres.2024.10.005
Yanzhao Li , Jing Yan , Pingzhen Yang
{"title":"Corrigendum to “The mechanism and therapeutic strategies in doxorubicin induced cardiotoxicity: Role of programmed cell death” [Cell Stress Chaperones. 2024;29:666-680]","authors":"Yanzhao Li , Jing Yan , Pingzhen Yang","doi":"10.1016/j.cstres.2024.10.005","DOIUrl":"10.1016/j.cstres.2024.10.005","url":null,"abstract":"","PeriodicalId":9684,"journal":{"name":"Cell Stress & Chaperones","volume":"29 6","pages":"Page 720"},"PeriodicalIF":3.3,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142495873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cell Stress & ChaperonesPub Date : 2024-12-01Epub Date: 2024-10-23DOI: 10.1016/j.cstres.2024.10.006
Milad J. Alasady , Marc L. Mendillo
{"title":"The heat shock factor code: Specifying a diversity of transcriptional regulatory programs broadly promoting stress resilience","authors":"Milad J. Alasady , Marc L. Mendillo","doi":"10.1016/j.cstres.2024.10.006","DOIUrl":"10.1016/j.cstres.2024.10.006","url":null,"abstract":"<div><div>The heat shock factor (HSF) family of transcription factors drives gene expression programs that maintain cytosolic protein homeostasis (proteostasis) in response to a vast array of physiological and exogenous stressors. The importance of HSF function has been demonstrated in numerous physiological and pathological contexts. Evidence accumulating over the last two decades has revealed that the regulatory programs driven by the HSF family can vary dramatically depending on the context in which it is activated. To broadly maintain proteostasis across these contexts, HSFs must bind and appropriately regulate the correct target genes at the correct time. Here, we discuss “the heat shock factor code”—our current understanding of how human cells use HSF paralog diversification and interplay, local concentration, post-translational modifications, and interactions with other proteins to enable the functional plasticity required for cellular resilience across a multitude of environments.</div></div>","PeriodicalId":9684,"journal":{"name":"Cell Stress & Chaperones","volume":"29 6","pages":"Pages 735-749"},"PeriodicalIF":3.3,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142495872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cell Stress & ChaperonesPub Date : 2024-12-01Epub Date: 2024-11-14DOI: 10.1016/j.cstres.2024.11.002
Miguel Ferrer , Berta Buey , Laura Grasa , Jose Emilio Mesonero , Eva Latorre
{"title":"Protective role of short-chain fatty acids on intestinal oxidative stress induced by TNF-α","authors":"Miguel Ferrer , Berta Buey , Laura Grasa , Jose Emilio Mesonero , Eva Latorre","doi":"10.1016/j.cstres.2024.11.002","DOIUrl":"10.1016/j.cstres.2024.11.002","url":null,"abstract":"<div><div>Inflammatory bowel diseases (IBDs) are driven by an exaggerated inflammatory response, which leads to a marked increase in oxidative stress. This, in turn, exacerbates the inflammatory process and causes significant cellular and tissue damage. Intestinal dysbiosis, a common observation in IBD patients, alters the production of bacterial metabolites, including short-chain fatty acids (SCFAs), which are key by-products of dietary fiber fermentation. While the role of SCFAs in intestinal physiology is still being elucidated, this study aimed to investigate their effects on intestinal oxidative stress, particularly under inflammatory conditions induced by the proinflammatory mediator tumor necrosis factor alpha (TNF-α). The Caco-2/TC7 cell line was employed as an in vitro model of the intestinal epithelium, and the cells were treated with a range of SCFAs, including acetate, propionate, and butyrate. The levels of protein and lipid oxidation were quantified, as well as the activity of antioxidant enzymes. Our findings demonstrate that microbiota-derived SCFAs can effectively mitigate TNF-α-induced oxidative stress by modulating antioxidant enzyme activity. The proinflammatory mediator TNF-α induces lipid peroxidation by inhibiting catalase and glutathione peroxidase activities. SCFAs are able to upregulate antioxidant enzyme activity to restore lipid oxidative levels. These results underscore the critical role of the gut microbiota in maintaining intestinal homeostasis and highlight the therapeutic potential of SCFAs in managing oxidative stress-related pathologies.</div></div>","PeriodicalId":9684,"journal":{"name":"Cell Stress & Chaperones","volume":"29 6","pages":"Pages 769-776"},"PeriodicalIF":3.3,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142638467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cell Stress & ChaperonesPub Date : 2024-12-01Epub Date: 2024-10-11DOI: 10.1016/j.cstres.2024.10.003
Lawrence E. Hightower
{"title":"In memoriam James S. Clegg (1933–2024)","authors":"Lawrence E. Hightower","doi":"10.1016/j.cstres.2024.10.003","DOIUrl":"10.1016/j.cstres.2024.10.003","url":null,"abstract":"","PeriodicalId":9684,"journal":{"name":"Cell Stress & Chaperones","volume":"29 6","pages":"Pages 718-719"},"PeriodicalIF":3.3,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142459008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cell Stress & ChaperonesPub Date : 2024-12-01Epub Date: 2024-11-06DOI: 10.1016/j.cstres.2024.11.001
Renzhong Li , Kui Sun
{"title":"Regulation of chondrocyte apoptosis in osteoarthritis by endoplasmic reticulum stress","authors":"Renzhong Li , Kui Sun","doi":"10.1016/j.cstres.2024.11.001","DOIUrl":"10.1016/j.cstres.2024.11.001","url":null,"abstract":"<div><div>Osteoarthritis (OA), a common degenerative joint disease, is characterized by the apoptosis of chondrocytes as a primary pathophysiological change, with endoplasmic reticulum stress (ERS) playing a crucial role. It has been demonstrated that an imbalance in endoplasmic reticulum (ER) homeostasis can lead to ERS, activating three cellular adaptive response pathways through the unfolded protein response to restore ER homeostasis. Mild ERS exerts a protective effect on cells, while prolonged ERS that disrupts the self-regulatory balance of the ER activates apoptotic signaling pathways, leading to chondrocyte apoptosis and hastening OA progression. Hence, controlling the ERS signaling pathway and its apoptotic factors has become a critical focus for preventing and treating OA. This review aims to elucidate the key mechanisms of ERS pathway-induced apoptosis, associated targets, and regulatory pathways, offering valuable insights to enhance the mechanistic understanding of OA. It also reviews the mechanisms studied for ERS-related drugs or compounds for the treatment of OA.</div></div>","PeriodicalId":9684,"journal":{"name":"Cell Stress & Chaperones","volume":"29 6","pages":"Pages 750-763"},"PeriodicalIF":3.3,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142615217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}