Journal
SCIENCE IMMUNOLOGY
Volume 4, Issue 35, Pages -Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciimmunol.aaw3658
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Funding
- NIH [DK092451, RC2DK116691, AR080334]
- JPB Foundation
- Dean's Innovation Grant
- Boehringer Ingelheim Fonds
- NIH Training Grant [T32GM007753]
- Cancer Research Institute Irvington fellowship
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Regulatory T cells (T-regs) are key brakes on the visceral adipose tissue (VAT) inflammation that regulates local and systemic metabolic tenor. Breakdown of this regulation promotes type 2 diabetes. The cytokine IL-33 expands and sustains the unique T-reg population residing within VAT. Here, relying on single-cell RNA sequencing, we identified the major IL-33 producers in VAT to be particular mesenchymal stromal cell subtypes, related to but distinct from adipocyte progenitor cells. We explored modulation of the VAT stromal cell landscape with physiologic variables such as age and sex, as well as its remodeling in pathogenic states like obesity. Last, we uncovered a VAT T-reg:stromal cell negative regulatory loop that keeps the potent effect of IL-33 under rein.
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