RANTES mediates kidney ischemia reperfusion injury through a possible role of HIF-1α and LncRNA PRINS

Sci Rep. 2016 Jan 4:6:18424. doi: 10.1038/srep18424.

Abstract

RANTES (Regulated on activation, normal T-cell expressed and secreted), recruits circulating leukocytes and augments inflammatory responses in many clinical conditions. Inflammatory responses in ischemia-reperfusion injury (IRI) significantly affect the unfavorable outcomes of acute kidney injury (AKI), and that infiltrating immune cells are important mediators of AKI. However, the significance of RANTES in AKI and whether hypoxia-induced LncRNAs are involved in the regulatory process of AKI are not known. Here we show that, in the kidney IRI mice model, significant RANTES expression was observed in renal tubular cells of wild type mice. RANTES deficient (RANTES(-/-)) mice showed better renal function by reducing the acute tubular necrosis, serum creatinine levels, infiltration of inflammatory cells and cytokine expressions compared to wild type. In vitro, we found that RANTES expression was regulated by NF-κB. Further, renal tubular cells showed deregulated LncRNA expression under hypoxia. Among HIF-1α dependent LncRNAs, PRINS (Psoriasis susceptibility-related RNA Gene Induced by Stress) was significantly up regulated in hypoxic conditions and had specific interaction with RANTES as confirmed through reporter assay. These observations show first evidence for RANTES produced by renal tubular cells act as a key chemokine in AKI and HIF-1α regulated LncRNA-PRINS might be involved in RANTES production.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Cell Hypoxia
  • Chemokine CCL5 / physiology*
  • Gene Expression
  • Hypoxia-Inducible Factor 1, alpha Subunit / physiology*
  • Ischemia
  • Kidney / blood supply*
  • Kidney / metabolism
  • Kidney / pathology
  • Male
  • Mice, Inbred C57BL
  • Mice, Knockout
  • NF-kappa B / metabolism
  • Neutrophil Infiltration
  • RNA, Long Noncoding / genetics*
  • RNA, Long Noncoding / metabolism
  • Reperfusion Injury / metabolism*

Substances

  • Ccl5 protein, mouse
  • Chemokine CCL5
  • Hif1a protein, mouse
  • Hypoxia-Inducible Factor 1, alpha Subunit
  • NF-kappa B
  • RNA, Long Noncoding
  • long non-coding RNA PRINS, mouse