Long Peng, Suhua Li, Qiang Huang, Yuxiang Sun, Juan Sun, Ting Luo, Yanlin Wang, Zhaoyong Hu, Weiyan Lai, Hui Peng
{"title":"鸢尾素介导的肌肾串扰：通过cGAS-STING信号抑制对抗造影剂诱导的急性肾损伤的保护机制","authors":"Long Peng, Suhua Li, Qiang Huang, Yuxiang Sun, Juan Sun, Ting Luo, Yanlin Wang, Zhaoyong Hu, Weiyan Lai, Hui Peng","doi":"10.1002/ctm2.70235","DOIUrl":null,"url":null,"abstract":"<div>\n \n \n <section>\n \n <h3> Background</h3>\n \n <p>Contrast-induced acute kidney injury (CI-AKI) continues to pose a pressing clinical challenge during invasive cardiovascular procedures due to the limited availability of preventative strategies. We aimed to demonstrate that irisin, a myokine induced by exercise, protects against CI-AKI by inhibiting the cGAS-STING inflammatory pathway.</p>\n </section>\n \n <section>\n \n <h3> Methods and results</h3>\n \n <p>We explored the relationship between serum irisin levels and CI-AKI incidence in patients administered the contrast media iohexol. Notably, lower serum irisin levels were strongly associated with an increased incidence of CI-AKI following contrast media administration. To establish a causal link between serum irisin levels and CI-AKI, we utilised a mouse model that simulates exercise by overexpressing muscle-specific PGC-1α. This approach showed a significant reduction in tubular injury and mitochondrial dysfunction induced by iohexol via cGAS/STING suppression, thereby diminishing inflammation. Mechanistically, irisin was found to inhibit the activation of cGAS/STING, preventing double stranded DNA (dsDNA) leakage and reducing inflammation in tubular epithelial cells (TECs). Pharmacological inhibition of STING further corroborated these observations. Moreover, we identified integrin complex αV/β5 as the irisin receptor on TECs, which is essential for irisin-mediated suppression of cGAS-STING signalling and resolution of inflammation.</p>\n </section>\n \n <section>\n \n <h3> Conclusions</h3>\n \n <p>Our data position irisin as a crucial factor in muscle‒kidney crosstalk, inhibiting cGAS-STING signalling and preventing dsDNA leakage via integrin αV/β5 in TECs, thus mitigating tubular injury and inflammation. These data underscore the potential of irisin as both a predictive biomarker for CI-AKI and a promising candidate for preventative strategies against CI-AKI.</p>\n </section>\n \n <section>\n \n <h3> Highlights</h3>\n \n <div>\n <ul>\n \n <li>Irisin mediated muscle-kidney crosstalk mitigated tubular injury and inflammation.</li>\n \n <li>Irisin inhibited the cGAS-STING signalling activation via integrin αV/β5 in tubular epithelial cells.</li>\n \n <li>Irisin was a predictive biomarker and a promising candidate for CI-AKI.</li>\n </ul>\n </div>\n </section>\n </div>","PeriodicalId":10189,"journal":{"name":"Clinical and Translational Medicine","volume":"15 3","pages":""},"PeriodicalIF":7.9000,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ctm2.70235","citationCount":"0","resultStr":"{\"title\":\"Irisin-mediated muscle-renal crosstalk as a protective mechanism against contrast-induced acute kidney injury via cGAS-STING signalling inhibition\",\"authors\":\"Long Peng, Suhua Li, Qiang Huang, Yuxiang Sun, Juan Sun, Ting Luo, Yanlin Wang, Zhaoyong Hu, Weiyan Lai, Hui Peng\",\"doi\":\"10.1002/ctm2.70235\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n \\n <section>\\n \\n <h3> Background</h3>\\n \\n <p>Contrast-induced acute kidney injury (CI-AKI) continues to pose a pressing clinical challenge during invasive cardiovascular procedures due to the limited availability of preventative strategies. We aimed to demonstrate that irisin, a myokine induced by exercise, protects against CI-AKI by inhibiting the cGAS-STING inflammatory pathway.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Methods and results</h3>\\n \\n <p>We explored the relationship between serum irisin levels and CI-AKI incidence in patients administered the contrast media iohexol. Notably, lower serum irisin levels were strongly associated with an increased incidence of CI-AKI following contrast media administration. To establish a causal link between serum irisin levels and CI-AKI, we utilised a mouse model that simulates exercise by overexpressing muscle-specific PGC-1α. This approach showed a significant reduction in tubular injury and mitochondrial dysfunction induced by iohexol via cGAS/STING suppression, thereby diminishing inflammation. Mechanistically, irisin was found to inhibit the activation of cGAS/STING, preventing double stranded DNA (dsDNA) leakage and reducing inflammation in tubular epithelial cells (TECs). Pharmacological inhibition of STING further corroborated these observations. Moreover, we identified integrin complex αV/β5 as the irisin receptor on TECs, which is essential for irisin-mediated suppression of cGAS-STING signalling and resolution of inflammation.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Conclusions</h3>\\n \\n <p>Our data position irisin as a crucial factor in muscle‒kidney crosstalk, inhibiting cGAS-STING signalling and preventing dsDNA leakage via integrin αV/β5 in TECs, thus mitigating tubular injury and inflammation. 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Irisin-mediated muscle-renal crosstalk as a protective mechanism against contrast-induced acute kidney injury via cGAS-STING signalling inhibition
Background
Contrast-induced acute kidney injury (CI-AKI) continues to pose a pressing clinical challenge during invasive cardiovascular procedures due to the limited availability of preventative strategies. We aimed to demonstrate that irisin, a myokine induced by exercise, protects against CI-AKI by inhibiting the cGAS-STING inflammatory pathway.
Methods and results
We explored the relationship between serum irisin levels and CI-AKI incidence in patients administered the contrast media iohexol. Notably, lower serum irisin levels were strongly associated with an increased incidence of CI-AKI following contrast media administration. To establish a causal link between serum irisin levels and CI-AKI, we utilised a mouse model that simulates exercise by overexpressing muscle-specific PGC-1α. This approach showed a significant reduction in tubular injury and mitochondrial dysfunction induced by iohexol via cGAS/STING suppression, thereby diminishing inflammation. Mechanistically, irisin was found to inhibit the activation of cGAS/STING, preventing double stranded DNA (dsDNA) leakage and reducing inflammation in tubular epithelial cells (TECs). Pharmacological inhibition of STING further corroborated these observations. Moreover, we identified integrin complex αV/β5 as the irisin receptor on TECs, which is essential for irisin-mediated suppression of cGAS-STING signalling and resolution of inflammation.
Conclusions
Our data position irisin as a crucial factor in muscle‒kidney crosstalk, inhibiting cGAS-STING signalling and preventing dsDNA leakage via integrin αV/β5 in TECs, thus mitigating tubular injury and inflammation. These data underscore the potential of irisin as both a predictive biomarker for CI-AKI and a promising candidate for preventative strategies against CI-AKI.
Highlights
Irisin mediated muscle-kidney crosstalk mitigated tubular injury and inflammation.
Irisin inhibited the cGAS-STING signalling activation via integrin αV/β5 in tubular epithelial cells.
Irisin was a predictive biomarker and a promising candidate for CI-AKI.
期刊介绍：
Clinical and Translational Medicine (CTM) is an international, peer-reviewed, open-access journal dedicated to accelerating the translation of preclinical research into clinical applications and fostering communication between basic and clinical scientists. It highlights the clinical potential and application of various fields including biotechnologies, biomaterials, bioengineering, biomarkers, molecular medicine, omics science, bioinformatics, immunology, molecular imaging, drug discovery, regulation, and health policy. With a focus on the bench-to-bedside approach, CTM prioritizes studies and clinical observations that generate hypotheses relevant to patients and diseases, guiding investigations in cellular and molecular medicine. The journal encourages submissions from clinicians, researchers, policymakers, and industry professionals.
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