p53 cooperates with SIRT6 to regulate cardiolipin de novo biosynthesis.

Abstract:

:The tumor suppressor p53 has critical roles in regulating lipid metabolism, but whether and how p53 regulates cardiolipin (CL) de novo biosynthesis is unknown. Here, we report that p53 physically interacts with histone deacetylase SIRT6 in vitro and in vivo, and this interaction increases following palmitic acid (PA) treatment. In response to PA, p53 and SIRT6 localize to chromatin in a p53-dependent manner. Chromatin p53 and SIRT6 bind the promoters of CDP-diacylglycerol synthase 1 and 2 (CDS1 and CDS2), two enzymes required to catalyze CL de novo biosynthesis. Here, SIRT6 serves as a co-activator of p53 and effectively recruits RNA polymerase II to the CDS1 and CDS2 promoters to enhance CL de novo biosynthesis. Our findings reveal a novel, cooperative model executed by p53 and SIRT6 to maintain lipid homeostasis.

journal_name

Cell Death Dis

journal_title

Cell death & disease

authors

Li M,Hou T,Gao T,Lu X,Yang Q,Zhu Q,Li Z,Liu C,Mu G,Liu G,Bao Y,Wen H,Wang L,Wang H,Zhao Y,Gu W,Yang Y,Zhu WG

doi

10.1038/s41419-018-0984-0

subject

Has Abstract

pub_date

2018-09-20 00:00:00

pages

941

issue

10

issn

2041-4889

pii

10.1038/s41419-018-0984-0

journal_volume

9

pub_type

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