TY - JOUR
AU1 - Xu, Yanhong
AU2 - Ye, Xiaotong
AU3 - Zhou, Yang
AU4 - Cao, Xinyu
AU5 - Peng, Shiqiao
AU6 - Peng, Yue
AU7 - Zhang, Xiaoying
AU8 - Sun, Yili
AU9 - Jiang, Haowen
AU1 - Huang, Wenying
AU1 - Lian, Hongkai
AU1 - Yang, Jiajun
AU1 - Li, Jia
AU1 - Ye, Jianping
AB - Ketone bodies have beneficial metabolic activities, and the induction of plasma ketone bodies is a health promotion strategy. Dietary supplementation of sodium butyrate (SB) is an effective approach in the induction of plasma ketone bodies. However, the cellular and molecular mechanisms are unknown. In this study, SB was found to enhance the catalytic activity of 3-hydroxy-3-methylglutaryl-CoA synthase 2 (HMGCS2), a rate-limiting enzyme in ketogenesis, to promote ketone body production in hepatocytes. SB administrated by gavage or intraperitoneal injection significantly induced blood ß-hydroxybutyrate (BHB) in mice. BHB production was induced in the primary hepatocytes by SB. Protein succinylation was altered by SB in the liver tissues with down-regulation in 58 proteins and up-regulation in 26 proteins in the proteomics analysis. However, the alteration was mostly observed in mitochondrial proteins with 41% down- and 65% up-regulation, respectively. Succinylation status of HMGCS2 protein was altered by a reduction at two sites (K221 and K358) without a change in the protein level. The SB effect was significantly reduced by a SIRT5 inhibitor and in Sirt5-KO mice. The data suggests that SB activated HMGCS2 through SIRT5-mediated desuccinylation for ketone body production by the liver. The effect was not associated with an elevation in NAD+/NADH ratio according to our metabolomics analysis. The data provide a novel molecular mechanism for SB activity in the induction of ketone body production.
TI - Sodium butyrate activates HMGCS2 to promote ketone body production through SIRT5-mediated desuccinylation
JF - Frontiers of Medicine
DO - 10.1007/s11684-022-0943-0
DA - 2023-04-01
UR - https://www.deepdyve.com/lp/springer-journals/sodium-butyrate-activates-hmgcs2-to-promote-ketone-body-production-oyWChhExbn
SP - 339
EP - 351
VL - 17
IS - 2
DP - DeepDyve
ER -