Carbonyl reductase 1 is an essential regulator of skeletal muscle differentiation and regeneration.

Autor: Lim S; Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea., Shin JY, Jo A, Jyothi KR, Nguyen MN, Choi TG, Kim J, Park JH, Eun YG, Yoon KS, Ha J, Kim SS
Jazyk: angličtina
Zdroj: The international journal of biochemistry & cell biology [Int J Biochem Cell Biol] 2013 Aug; Vol. 45 (8), pp. 1784-93. Date of Electronic Publication: 2013 May 31.
DOI: 10.1016/j.biocel.2013.05.025
Abstrakt: It is well established that reactive oxygen species (ROS) are essential signaling molecules for muscle differentiation. Carbonyl reductase 1 (CBR1) reduces highly reactive lipid aldehydes and catalyzes a variety of endogenous and xenobiotic carbonyl compounds. However, the role of CBR1 in muscle differentiation remains unclear. In this study, we found that CBR1 plays a crucial role in differentiation of muscle-derived C2C12 cells. Our results clearly show that CBR1 is upregulated at the transcript level during differentiation. Consistently, CBR1 was increased during skeletal muscle regeneration in tibialis anterior muscle after injury induced by cardiotoxin. The transcriptional upregulation of CBR1 was found to be controlled by nuclear factor erythroid 2-related factor 2 (Nrf2), and Nrf2 knockdown with specific siRNA inhibited muscle differentiation. Furthermore, intracellular ROS levels and lipid peroxidation were increased in cells transfected with CBR1 siRNA, or in cells treated with the selective CBR1 inhibitor, Hydroxy-PP-Me. Subsequently, the increased ROS levels diminished muscle cell differentiation. All together, we conclude that CBR1 plays a critical role in controlling redox balance and detoxifying lipid peroxidation during muscle differentiation and regeneration.
(Copyright © 2013 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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