Carbon dioxide regulates cholesterol levels through SREBP2

Nityanand Bolshette, Saar Ezagouri, Vaishnavi Dandavate, Iuliia Karavaeva, Marina Golik, Hu Wang, Peter J. Espenshade, Timothy F. Osborne, Xianlin Han, Gad Asher

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

AU In mammals,: Pleaseconfirmthatallheadinglevelsarerepresentedcorrectly O2 and CO2 levels are tightly regulated and are:altered under various pathological conditions. While the molecular mechanisms that participate in O2 sensing are well characterized, little is known regarding the signaling pathways that participate in CO2 signaling and adaptation. Here, we show that CO2 levels control a distinct cellular transcriptional response that differs from mere pH changes. Unexpectedly, we discovered that CO2 regulates the expression of cholesterogenic genes in a SREBP2-dependent manner and modulates cellular cholesterol accumulation. Molecular dissection of the underlying mechanism suggests that CO2 triggers SREBP2 activation through changes in endoplasmic reticulum (ER) membrane cholesterol levels. Collectively, we propose that SREBP2 participates in CO2 signaling and that cellular cholesterol levels can be modulated by CO2 through SREBP2.

Original languageEnglish (US)
Article numbere3002367
JournalPLoS biology
Volume21
Issue number11
DOIs
StatePublished - Nov 2023

ASJC Scopus subject areas

  • General Immunology and Microbiology
  • General Biochemistry, Genetics and Molecular Biology
  • General Neuroscience
  • General Agricultural and Biological Sciences

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