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2000
Volume 26, Issue 16
  • ISSN: 1389-2010
  • E-ISSN: 1873-4316

Abstract

Objective

This study aimed to explore the effects of Jiangu Recipe (JGR) on chondrocyte responses under tert-Butyl hydroperoxide (TBHP)-induced oxidative stress, specifically focusing on apoptosis and extracellular matrix (ECM) degradation.

Methods

Chondrocytes were treated with varying JGR concentrations, and cell viability was assessed. The impact of JGR on TBHP-induced apoptosis and protein expression levels of apoptosis-related molecules (Bcl-2, Bax, and cleaved caspase-3) and ECM components (Collagen II, Aggrecan, MMP-13) was evaluated.

Results

JGR exhibited protective effects against oxidative stress in chondrocytes. Moreover, it maintained cell viability under tert-butyl hydroperoxide (TBHP) induction, suppressing apoptosis (Bax, cleaved caspase-3) and enhancing anti-apoptotic Bcl-2. JGR also attenuated extracellular matrix (ECM) degradation, promoting Collagen II and Aggrecan while reducing MMP-13 expression. Investigating endoplasmic reticulum (ER) stress, it was found that JGR downregulated TBHP-induced GRP78, CHOP, ATF4, p-PERK, and p-eIF2α, thus indicating ER stress modulation. SIRT1 played a key role, as JGR upregulated SIRT1, mitigating TBHP-induced downregulation. SIRT1 knockdown reversed JGR's protective effects, highlighting its crucial role in JGR-mediated responses.

Conclusion

Our findings suggest that JGR mitigated TBHP-induced chondrocyte apoptosis and ECM degradation, highlighting its potential therapeutic application in osteoarthritis. Mechanistically, our study highlights that SIRT1 plays a crucial role in mediating the protective effects of JGR against ER stress-induced chondrocyte apoptosis and ECM degradation, providing a foundation for further clinical exploration in managing osteoarthritic conditions.

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2024-10-07
2025-12-25

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Jiangu Recipe Suppresses ER Stress-induced Apoptosis and Inhibits Extracellular Matrix Degradation in Chondrocytes through Upregulating SIRT1 Expression
Current Pharmaceutical Biotechnology 26, 2578 (2025); https://doi.org/10.2174/0113892010316076240924072658
/content/journals/cpb/10.2174/0113892010316076240924072658
/content/journals/cpb/10.2174/0113892010316076240924072658
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  • Article Type:     Research Article
Keyword(s): apoptosis; endoplasmic reticulum stress; Jiangu recipe; oxidative stress; SIRT1; tert-butyl hydroperoxide

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