Open AccessMecp2 protects kidney from ischemia-reperfusion injury through transcriptional repressing IL-6/STAT3 signaling
Author(s) -
Jiao Wang,
Mingrui Xiong,
Yadong Fan,
Chengyu Liu,
Qing Wang,
Dong Yang,
Yangmian Yuan,
Yixue Huang,
Shun Wang,
Yu Zhang,
Shu-Xuan Niu,
Junqiu Yue,
Hua Su,
Chun Zhang,
Hong Chen,
Ling Zheng,
Kun Huang
Publication year - 2022
Publication title -
theranostics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.689
H-Index - 97
ISSN - 1838-7640
DOI - 10.7150/thno.72515
Subject(s) - mecp2 , renal ischemia , cancer research , fibrosis , acute kidney injury , medicine , proinflammatory cytokine , kidney , stat3 , inflammation , reperfusion injury , biology , signal transduction , immunology , pathology , ischemia , microbiology and biotechnology , phenotype , biochemistry , gene
Rationale: Ischemia-reperfusion (IR) induced acute kidney injury (AKI) causes serious clinical problems associated with high morbidity and mortality. Mecp2 is a methyl-CpG binding protein, its mutation or deletion causes a neurodevelopment disease called Rett syndrome. Notably, some Rett syndrome patients present urological dysfunctions. It remains unclear whether and how Mecp2 affects AKI. Methods: Renal tubular cell specific Mecp2 deletion mice challenged with IR injury were used to investigate the effects of Mecp2 on renal tubular damage, function, cell death, fibrosis and inflammation. Cultured renal epithelial cell lines were transfected with wildtype or different domain-deletion mutants of Mecp2 to study the effects of Mecp2 on Il-6/STAT3 signaling. Results: Our results indicated rapidly upregulated Mecp2 upon acute in vivo and in vitro renal injury. Notably, increased tubular MeCP2 staining was also found in the renal sections of AKI patients. Furthermore, ablation of Mecp2 aggravated renal injury, and promoted renal cell death, inflammation, and fibrosis. Mechanistically, through its transcriptional repression domain, Mecp2 bound to the promoter of proinflammatory cytokine Il-6 to negatively regulate its expression, thus inhibiting STAT3 activation. Conclusions: A novel protective role of Mecp2 against AKI via repressing the Il-6/STAT3 axis was suggested.