Upregulation of Carbonyl Reductase 1 by Nrf2 as a Potential Therapeutic Intervention for Ischemia/ Reperfusion Injury during Liver Transplantation

Jae Hyun Kwon, Jooyoung Lee, Jiye Kim, Varvara A. Kirchner, Yong Hwa Jo, Takeshi Miura, Nayoung Kim, Gi Won Song, Shin Hwang, Sung Gyu Lee, Young In Yoon, Eunyoung Tak

Research output: Contribution to journalArticlepeer-review

Abstract

Currently, liver transplantation is the only available remedy for patients with end-stage liver disease. Conservation of transplanted liver graft is the most important issue as it directly related to patient survival. Carbonyl reductase 1 (CBR1) protects cells against oxidative stress and cell death by inactivating cellular membrane-derived lipid aldehydes. Ischemia-reperfusion (I/R) injury during living-donor liver transplantation is known to form reactive oxygen species. Thus, the objective of this study was to investigate whether CBR1 transcription might be increased during liver I/R injury and whether such increase might protect liver against I/R injury. Our results revealed that transcription factor Nrf2 could induce CBR1 transcription in liver of mice during I/R. Pre-treatment with sulforaphane, an activator of Nrf2, increased CBR1 expression, decreased liver enzymes such as aspartate aminotransferase and alanine transaminase, and reduced I/R-related pathological changes. Using oxygenglucose deprivation and recovery model of human normal liver cell line, it was found that oxidative stress markers and lipid peroxidation products were significantly lowered in cells overexpressing CBR1. Conversely, CBR1 knockdown cells expressed elevated levels of oxidative stress proteins compared to the parental cell line. We also observed that Nrf2 and CBR1 were overexpressed during liver transplantation in clinical samples. These results suggest that CBR1 expression during liver I/R injury is regulated by transcription factor Nrf2. In addition, CBR1 can reduce free radicals and prevent lipid peroxidation. Taken together, CBR1 induction might be a therapeutic strategy for relieving liver I/R injury during liver transplantation.

Original languageEnglish (US)
Pages (from-to)672-685
Number of pages14
JournalMolecules and cells
Volume42
Issue number9
DOIs
StatePublished - Sep 30 2019

Keywords

  • Nrf2
  • carbonyl reductase 1
  • ischemia-reperfusion injury
  • lipid peroxidation
  • living-donor liver transplantation
  • oxidative stress

PubMed: MeSH publication types

  • Journal Article

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