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Interleukin-20 targets podocytes and is upregulated in experimental murine diabetic nephropathy.


ABSTRACT: Interleukin (IL)-20, a proinflammatory cytokine of the IL-10 family, is involved in acute and chronic renal failure. The aim of this study was to elucidate the role of IL-20 during diabetic nephropathy development. We found that IL-20 and its receptor IL-20R1 were upregulated in the kidneys of mice and rats with STZ-induced diabetes. In vitro, IL-20 induced MMP-9, MCP-1, TGF-?1 and VEGF expression in podocytes. IL-20 was upregulated by hydrogen peroxide, high-dose glucose and TGF-?1. In addition, IL-20 induced apoptosis in podocytes by activating caspase-8. In STZ-induced early diabetic nephropathy, IL-20R1-deficient mice had lower blood glucose and serum BUN levels and a smaller glomerular area than did wild-type controls. Anti-IL-20 monoclonal antibody (7E) treatment reduced blood glucose and the glomerular area and improved renal functions in mice in the early stage of STZ-induced diabetic nephropathy. ELISA showed that the serum IL-20 level was higher in patients with diabetes mellitus than in healthy controls. The findings of this study suggest that IL-20 induces cell apoptosis of podocytes and plays a role in the pathogenesis of early diabetic nephropathy.

SUBMITTER: Hsu YH 

PROVIDER: S-EPMC5382560 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature

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Interleukin-20 targets podocytes and is upregulated in experimental murine diabetic nephropathy.

Hsu Yu-Hsiang YH   Li Hsing-Hui HH   Sung Junne-Ming JM   Chen Wei-Yu WY   Hou Ya-Chin YC   Weng Yun-Han YH   Lai Wei-Ting WT   Wu Chih-Hsing CH   Chang Ming-Shi MS  

Experimental & molecular medicine 20170331 3


Interleukin (IL)-20, a proinflammatory cytokine of the IL-10 family, is involved in acute and chronic renal failure. The aim of this study was to elucidate the role of IL-20 during diabetic nephropathy development. We found that IL-20 and its receptor IL-20R1 were upregulated in the kidneys of mice and rats with STZ-induced diabetes. In vitro, IL-20 induced MMP-9, MCP-1, TGF-β1 and VEGF expression in podocytes. IL-20 was upregulated by hydrogen peroxide, high-dose glucose and TGF-β1. In addition  ...[more]

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