Age-dependent Pdgfrβ signaling drives adipocyte progenitor dysfunction to alter the beige adipogenic niche in male mice

Abigail M. Benvie, Derek Lee, Benjamin M. Steiner, Siwen Xue, Yuwei Jiang and Daniel C. Berry ()
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Abigail M. Benvie: Cornell University
Derek Lee: Cornell University
Benjamin M. Steiner: Cornell University
Siwen Xue: Cornell University
Yuwei Jiang: University of Illinois at Chicago
Daniel C. Berry: Cornell University

Nature Communications, 2023, vol. 14, issue 1, 1-16

Abstract: Abstract Perivascular adipocyte progenitor cells (APCs) can generate cold temperature-induced thermogenic beige adipocytes within white adipose tissue (WAT), an effect that could counteract excess fat mass and metabolic pathologies. Yet, the ability to generate beige adipocytes declines with age, creating a key challenge for their therapeutic potential. Here we show that ageing beige APCs overexpress platelet derived growth factor receptor beta (Pdgfrβ) to prevent beige adipogenesis. We show that genetically deleting Pdgfrβ, in adult male mice, restores beige adipocyte generation whereas activating Pdgfrβ in juvenile mice blocks beige fat formation. Mechanistically, we find that Stat1 phosphorylation mediates Pdgfrβ beige APC signaling to suppress IL-33 induction, which dampens immunological genes such as IL-13 and IL-5. Moreover, pharmacologically targeting Pdgfrβ signaling restores beige adipocyte development by rejuvenating the immunological niche. Thus, targeting Pdgfrβ signaling could be a strategy to restore WAT immune cell function to stimulate beige fat in adult mammals.

Date: 2023
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DOI: 10.1038/s41467-023-37386-z

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