Divergent roles of m6A in orchestrating brown and white adipocyte transcriptomes and systemic metabolism
N<sup>6</sup>-methyladenosine (m<sup>6</sup>A) is among the most abundant mRNA modifications, yet its cell-type-specific regulatory roles remain unclear. Here we show that m<sup>6</sup>A methyltransferase-like 14 (METTL14) differentially regulates transcriptome in brown versus white adipose tissue (BAT and WAT), leading to divergent metabolic outcomes. In humans and mice with insulin resistance, METTL14 expression differs significantly from BAT and WAT in the context of its correlation with insulin sensitivity. Mettl14-knockout in BAT promotes prostaglandin secretion, improving systemic insulin sensitivity. Conversely, Mettl14-knockout in WAT triggers adipocyte apoptosis and systemic insulin resistance. m<sup>6</sup>A-seq and RNA-seq integration revealed upregulated prostaglandin biosynthesis pathways in BAT and apoptotic pathways in WAT with Mettl14 deficiency. Stable METTL14-knockout hBAs/hWAs show METTL14-mediated m<sup>6</sup>A promotes mRNA decay of PTGES2 and CBR1 in hBAs and TRAIL and TNFR1 in hWAs. These data shed light on the ability of m<sup>6</sup>A to impact metabolism in a cell-type-specific manner with implications for influencing the pathophysiology of metabolic diseases.
Authors
- Jiangbo Wei (ORCID: https://orcid.org/0000-0003-2691-6490)
- Cheng‐Wei Ju (ORCID: https://orcid.org/0000-0002-2250-8548)
- Yu‐Hua Tseng (ORCID: https://orcid.org/0000-0003-2053-9559)
- Rohit Kulkarni (ORCID: https://orcid.org/0000-0001-5029-6119)
- Jiang‐Miao Hu (ORCID: https://orcid.org/0000-0002-9013-8489)
- Siying Wei (ORCID: https://orcid.org/0009-0008-1500-1504)
- Tadataka Tsuji (ORCID: https://orcid.org/0000-0002-2837-8246)
- Matthias Blüher (ORCID: https://orcid.org/0000-0003-0208-2065)
- Dario F. De Jesus (ORCID: https://orcid.org/0000-0001-8826-9095)
- Chuan He (ORCID: https://orcid.org/0000-0003-4319-7424)
- Ava DiStefano-Forti
- Ling Xiao (ORCID: https://orcid.org/0000-0002-7439-0289)
- Valeria Salerno Gonzales
Institutions
- Joslin Diabetes Center (US)
- Beth Israel Deaconess Medical Center (US)
- Howard Hughes Medical Institute (US)
- Harvard University (US)
- National University of Singapore (SG)
- Beth Israel Deaconess Hospital (US)
- University of Chicago (US)
- Harvard Stem Cell Institute (US)
Publication Details
- Journal
- Nature Communications
- Published
- 2025-01-09
- DOI
- https://doi.org/10.1038/s41467-024-55694-w
- Citations
- 14
- Primary Topic
- RNA modifications and cancer
- Type
- article
- Field-Weighted Citation Impact
- 11.28
Funders
- American Diabetes Association
- American Heart Association
- Vanderbilt University
- University of Texas Southwestern Medical Center
- Diabetes Research and Wellness Foundation
- Deutsche Forschungsgemeinschaft
- National Institutes of Health