{"title":"SMP30通过下调p-STAT3抑制白内障晶状体上皮细胞焦亡。","authors":"Yongshun Liang, Qingqiao Gan, Xin Zhong, Tian Lan, Yingqin Yang, Lixia Lin, Chengye Tang, Hao Liang","doi":"10.2147/JIR.S536127","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>To determine the effect of senescence marker protein 30 (SMP30) regulation on the levels of p-STAT3 in the pathophysiology of lens epithelial cells (LECs) pyroptosis in cataracts.</p><p><strong>Methods: </strong>Initially, cataracts were induced in rats using ultraviolet B (UVB) irradiation. Transmission electron microscopy was utilized to observe morphological changes in rat LECs, and RT-qPCR was utilized to quantify SMP30 and pyroptosis-related marker genes (GSDMD, Caspase-1, NLRP3, IL-1β, and IL-18). Subsequently, SMP30-AAV2 vectors were injected into the vitreous cavity to overexpress SMP30 in rat lenses. Proteomic analysis identified differential proteins associated with pyroptosis post-SMP30 overexpression. Stable SMP30-overexpressing human LECs (SRA01/04 cells) were established via lentiviral transfection. Western blot, ELISA, and RT-qPCR were used to investigate the role of SMP30 in the pyroptosis of LECs treated with H<sub>2</sub>O<sub>2</sub>. Additionally, rescue experiments with p-STAT3 agonists and inhibitors elucidated SMP30's molecular mechanisms in H<sub>2</sub>O<sub>2</sub>-induced LECs pyroptosis.</p><p><strong>Results: </strong>After UVB irradiation, SMP30 expression significantly decreased in rat lens capsules, while pyroptosis-related marker gene expression markedly increased. Ten crucial pyroptosis-related proteins were identified by proteomic analysis following SMP30 overexpression, with STAT3 receiving the highest score. SMP30 overexpression during H<sub>2</sub>O<sub>2</sub>-induced pyroptosis in SRA01/04 cells significantly decreased the expression of pyroptosis-related markers (GSDMD, Caspase-1, NLRP3, IL-1β, and IL-18). The p-STAT3 agonist Colivelin weakened the anti-pyroptotic effect of SMP30, while the p-STAT3 inhibitor Stattic enhanced the anti-pyroptotic effect of SMP30.</p><p><strong>Conclusion: </strong>The expression levels of SMP30 were downregulated in cataract cell pyroptosis. When overexpressed, SMP30 can reduce lens epithelial cell pyroptosis by downregulating the expression of p-STAT3. Thus, SMP30 demonstrates promising potential in preventing and treating cataracts.</p>","PeriodicalId":16107,"journal":{"name":"Journal of Inflammation Research","volume":"18 ","pages":"12361-12377"},"PeriodicalIF":4.1000,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12428661/pdf/","citationCount":"0","resultStr":"{\"title\":\"SMP30 Attenuates Lens Epithelial Cells Pyroptosis of Cataract via the Downregulation of p-STAT3.\",\"authors\":\"Yongshun Liang, Qingqiao Gan, Xin Zhong, Tian Lan, Yingqin Yang, Lixia Lin, Chengye Tang, Hao Liang\",\"doi\":\"10.2147/JIR.S536127\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Background: </strong>To determine the effect of senescence marker protein 30 (SMP30) regulation on the levels of p-STAT3 in the pathophysiology of lens epithelial cells (LECs) pyroptosis in cataracts.</p><p><strong>Methods: </strong>Initially, cataracts were induced in rats using ultraviolet B (UVB) irradiation. Transmission electron microscopy was utilized to observe morphological changes in rat LECs, and RT-qPCR was utilized to quantify SMP30 and pyroptosis-related marker genes (GSDMD, Caspase-1, NLRP3, IL-1β, and IL-18). Subsequently, SMP30-AAV2 vectors were injected into the vitreous cavity to overexpress SMP30 in rat lenses. Proteomic analysis identified differential proteins associated with pyroptosis post-SMP30 overexpression. Stable SMP30-overexpressing human LECs (SRA01/04 cells) were established via lentiviral transfection. Western blot, ELISA, and RT-qPCR were used to investigate the role of SMP30 in the pyroptosis of LECs treated with H<sub>2</sub>O<sub>2</sub>. Additionally, rescue experiments with p-STAT3 agonists and inhibitors elucidated SMP30's molecular mechanisms in H<sub>2</sub>O<sub>2</sub>-induced LECs pyroptosis.</p><p><strong>Results: </strong>After UVB irradiation, SMP30 expression significantly decreased in rat lens capsules, while pyroptosis-related marker gene expression markedly increased. Ten crucial pyroptosis-related proteins were identified by proteomic analysis following SMP30 overexpression, with STAT3 receiving the highest score. SMP30 overexpression during H<sub>2</sub>O<sub>2</sub>-induced pyroptosis in SRA01/04 cells significantly decreased the expression of pyroptosis-related markers (GSDMD, Caspase-1, NLRP3, IL-1β, and IL-18). The p-STAT3 agonist Colivelin weakened the anti-pyroptotic effect of SMP30, while the p-STAT3 inhibitor Stattic enhanced the anti-pyroptotic effect of SMP30.</p><p><strong>Conclusion: </strong>The expression levels of SMP30 were downregulated in cataract cell pyroptosis. When overexpressed, SMP30 can reduce lens epithelial cell pyroptosis by downregulating the expression of p-STAT3. Thus, SMP30 demonstrates promising potential in preventing and treating cataracts.</p>\",\"PeriodicalId\":16107,\"journal\":{\"name\":\"Journal of Inflammation Research\",\"volume\":\"18 \",\"pages\":\"12361-12377\"},\"PeriodicalIF\":4.1000,\"publicationDate\":\"2025-09-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12428661/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Inflammation Research\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://doi.org/10.2147/JIR.S536127\",\"RegionNum\":2,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2025/1/1 0:00:00\",\"PubModel\":\"eCollection\",\"JCR\":\"Q2\",\"JCRName\":\"IMMUNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Inflammation Research","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.2147/JIR.S536127","RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/1/1 0:00:00","PubModel":"eCollection","JCR":"Q2","JCRName":"IMMUNOLOGY","Score":null,"Total":0}
SMP30 Attenuates Lens Epithelial Cells Pyroptosis of Cataract via the Downregulation of p-STAT3.
Background: To determine the effect of senescence marker protein 30 (SMP30) regulation on the levels of p-STAT3 in the pathophysiology of lens epithelial cells (LECs) pyroptosis in cataracts.
Methods: Initially, cataracts were induced in rats using ultraviolet B (UVB) irradiation. Transmission electron microscopy was utilized to observe morphological changes in rat LECs, and RT-qPCR was utilized to quantify SMP30 and pyroptosis-related marker genes (GSDMD, Caspase-1, NLRP3, IL-1β, and IL-18). Subsequently, SMP30-AAV2 vectors were injected into the vitreous cavity to overexpress SMP30 in rat lenses. Proteomic analysis identified differential proteins associated with pyroptosis post-SMP30 overexpression. Stable SMP30-overexpressing human LECs (SRA01/04 cells) were established via lentiviral transfection. Western blot, ELISA, and RT-qPCR were used to investigate the role of SMP30 in the pyroptosis of LECs treated with H2O2. Additionally, rescue experiments with p-STAT3 agonists and inhibitors elucidated SMP30's molecular mechanisms in H2O2-induced LECs pyroptosis.
Results: After UVB irradiation, SMP30 expression significantly decreased in rat lens capsules, while pyroptosis-related marker gene expression markedly increased. Ten crucial pyroptosis-related proteins were identified by proteomic analysis following SMP30 overexpression, with STAT3 receiving the highest score. SMP30 overexpression during H2O2-induced pyroptosis in SRA01/04 cells significantly decreased the expression of pyroptosis-related markers (GSDMD, Caspase-1, NLRP3, IL-1β, and IL-18). The p-STAT3 agonist Colivelin weakened the anti-pyroptotic effect of SMP30, while the p-STAT3 inhibitor Stattic enhanced the anti-pyroptotic effect of SMP30.
Conclusion: The expression levels of SMP30 were downregulated in cataract cell pyroptosis. When overexpressed, SMP30 can reduce lens epithelial cell pyroptosis by downregulating the expression of p-STAT3. Thus, SMP30 demonstrates promising potential in preventing and treating cataracts.
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An international, peer-reviewed, open access, online journal that welcomes laboratory and clinical findings on the molecular basis, cell biology and pharmacology of inflammation.
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