Apelin protects against acute renal injury by inhibiting TGF-β1

Hong Chen, Danyang Wan, Lin Wang, Anlin Peng, Hongdou Xiao, Robert B. Petersen, Chengyu Liu, Ling Zheng, Kun Huang

Research output: Contribution to journalArticlepeer-review

57 Scopus citations

Abstract

Renal ischemia/reperfusion (I/R) injury is the most common cause of acute kidney injury, having a high rate of mortality and no effective therapy currently available. Apelin-13, a bioactive peptide, has been shown to inhibit the early lesions of diabetic nephropathy in several mouse models by us and others. To test whether apelin-13 protects against renal I/R induced injury, male rats were exposed to renal I/R injury with or without apelin-13 treatment for 3. days. Apelin-13 treatment markedly reduced the injury-induced tubular lesions, renal cell apoptosis, and normalized the injury induced renal dysfunction. Apelin-13 treatment inhibited the injury-induced elevation of inflammatory factors and Tgf-β1, as well as apoptosis. Apelin-13 treatment also inhibited the injury-induced elevation of histone methylation and Kmt2d, a histone methyltransferase of H3K4me2, following renal I/R injury. Furthermore, in cultured renal mesangial and tubular cells, apelin-13 suppressed the injury-induced elevation of Tgf-β1, apoptosis, H3K4me2 and Kmt2d under the in vitro hypoxia/reperfusion (H/R) conditions. Consistently, over-expression of apelin significantly inhibited H/R-induced elevation of TGF-β1, apoptosis, H3K4me2 and Kmt2d. The present study therefore suggests apelin-13 may be a therapeutic candidate for treating acute kidney injury.

Original languageEnglish
Pages (from-to)1278-1287
Number of pages10
JournalBiochimica et Biophysica Acta - Molecular Basis of Disease
Volume1852
Issue number7
DOIs
StatePublished - Jul 1 2015

Keywords

  • Apelin
  • Histone methylation
  • Renal I/R injury
  • TGF-β1

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