Zhiyu Ji, Siyu Lin, Siyu Gui, Jie Gao, Fan Cao, Yiming Guan, Qinyu Ni, Keyang Chen, Liming Tao, Jiang Zhengxuan
{"title":"在糖尿病视网膜病变中，过表达的 Poldip2 通过 TGFβ1/SMAD3 信号通路导致视网膜纤维化。","authors":"Zhiyu Ji, Siyu Lin, Siyu Gui, Jie Gao, Fan Cao, Yiming Guan, Qinyu Ni, Keyang Chen, Liming Tao, Jiang Zhengxuan","doi":"10.2337/db23-1036","DOIUrl":null,"url":null,"abstract":"<p><p>Retinal fibrosis is one of the major features of diabetic retinopathy (DR). Our recent research has shown that Poldip2 can affect early DR through oxidative stress, but whether Poldip2 would regulate retinal fibrosis during DR development is still enigmatic. Here, diabetic Sprague-Dawley (SD) rats were induced with streptozotocin (STZ) and treated with adeno-associated virus serotype 9-polymerase-δ interacting protein 2 (Poldip2) shRNA, while human adult retinal pigment epithelial (ARPE-19) cells were treated with high glucose or Poldip2 siRNA. We identified that in STZ-induced DR rats and ARPE-19 cells treated with high glucose, the expression of Poldip2, transforming growth factor-β1 (TGF-β1), phosphorylated-SMAD3/SMAD3, MMP9, COL-1, FN, and CTGF increased while the expression of cadherin decreased. However, deleting Poldip2 inhibited the TGF-β1/SMAD3 signaling pathway and attenuated the above protein expression in vivo and in vitro. Mechanistically, we found that Poldip2 promotes the activation of SMAD3, facilitates its nuclear translocation through interacting with it, and significantly enhances the expression of fibrosis makers. Collectively, Poldip2 was identified is a novel regulator of DR fibrosis and is expected to become a therapeutic target for PDR.</p><p><strong>Article highlights: </strong></p>","PeriodicalId":93977,"journal":{"name":"Diabetes","volume":" ","pages":"1742-1755"},"PeriodicalIF":0.0000,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Overexpressed Poldip2 Incurs Retinal Fibrosis via the TGF-β1/SMAD3 Signaling Pathway in Diabetic Retinopathy.\",\"authors\":\"Zhiyu Ji, Siyu Lin, Siyu Gui, Jie Gao, Fan Cao, Yiming Guan, Qinyu Ni, Keyang Chen, Liming Tao, Jiang Zhengxuan\",\"doi\":\"10.2337/db23-1036\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Retinal fibrosis is one of the major features of diabetic retinopathy (DR). Our recent research has shown that Poldip2 can affect early DR through oxidative stress, but whether Poldip2 would regulate retinal fibrosis during DR development is still enigmatic. Here, diabetic Sprague-Dawley (SD) rats were induced with streptozotocin (STZ) and treated with adeno-associated virus serotype 9-polymerase-δ interacting protein 2 (Poldip2) shRNA, while human adult retinal pigment epithelial (ARPE-19) cells were treated with high glucose or Poldip2 siRNA. We identified that in STZ-induced DR rats and ARPE-19 cells treated with high glucose, the expression of Poldip2, transforming growth factor-β1 (TGF-β1), phosphorylated-SMAD3/SMAD3, MMP9, COL-1, FN, and CTGF increased while the expression of cadherin decreased. However, deleting Poldip2 inhibited the TGF-β1/SMAD3 signaling pathway and attenuated the above protein expression in vivo and in vitro. Mechanistically, we found that Poldip2 promotes the activation of SMAD3, facilitates its nuclear translocation through interacting with it, and significantly enhances the expression of fibrosis makers. Collectively, Poldip2 was identified is a novel regulator of DR fibrosis and is expected to become a therapeutic target for PDR.</p><p><strong>Article highlights: </strong></p>\",\"PeriodicalId\":93977,\"journal\":{\"name\":\"Diabetes\",\"volume\":\" \",\"pages\":\"1742-1755\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Diabetes\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.2337/db23-1036\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Diabetes","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2337/db23-1036","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Overexpressed Poldip2 Incurs Retinal Fibrosis via the TGF-β1/SMAD3 Signaling Pathway in Diabetic Retinopathy.
Retinal fibrosis is one of the major features of diabetic retinopathy (DR). Our recent research has shown that Poldip2 can affect early DR through oxidative stress, but whether Poldip2 would regulate retinal fibrosis during DR development is still enigmatic. Here, diabetic Sprague-Dawley (SD) rats were induced with streptozotocin (STZ) and treated with adeno-associated virus serotype 9-polymerase-δ interacting protein 2 (Poldip2) shRNA, while human adult retinal pigment epithelial (ARPE-19) cells were treated with high glucose or Poldip2 siRNA. We identified that in STZ-induced DR rats and ARPE-19 cells treated with high glucose, the expression of Poldip2, transforming growth factor-β1 (TGF-β1), phosphorylated-SMAD3/SMAD3, MMP9, COL-1, FN, and CTGF increased while the expression of cadherin decreased. However, deleting Poldip2 inhibited the TGF-β1/SMAD3 signaling pathway and attenuated the above protein expression in vivo and in vitro. Mechanistically, we found that Poldip2 promotes the activation of SMAD3, facilitates its nuclear translocation through interacting with it, and significantly enhances the expression of fibrosis makers. Collectively, Poldip2 was identified is a novel regulator of DR fibrosis and is expected to become a therapeutic target for PDR.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
