1. White adipocytes in subcutaneous fat depots require KLF15 for maintenance in preclinical models
- Author
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Li, Liang and Feldman, Brian J.
- Subjects
Adipose tissues -- Measurement -- Health aspects ,Transcription factors -- Analysis ,Diabetics -- Care and treatment ,Health care industry ,Care and treatment ,Analysis ,Measurement ,Health aspects - Abstract
Healthy adipose tissue is essential for normal physiology. There are 2 broad types of adipose tissue depots: brown adipose tissue (BAT), which contains adipocytes poised to burn energy through thermogenesis, and white adipose tissue (WAT), which contains adipocytes that store lipids. However, within those types of adipose, adipocytes possess depot and cell- specific properties that have important implications. For example, the subcutaneous and visceral WAT confers divergent risk for metabolic disease. Further, within a depot, different adipocytes can have distinct properties; subcutaneous WAT can contain adipocytes with either white or brown-like (beige) adipocyte properties. However, the pathways that regulate and maintain this cell and depot-specificity are incompletely understood. Here, we found that the transcription factor KLF15 is required for maintaining white adipocyte properties selectively within the subcutaneous WAT. We revealed that deletion of Klf15 is sufficient to induce beige adipocyte properties and that KLF15's direct regulation of Adrbl is a critical molecular mechanism for this process. We uncovered that this activity is cell autonomous but has systemic implications in mouse models and is conserved in primary human adipose cells. Our results elucidate a pathway for depot-specific maintenance of white adipocyte properties that could enable the development of therapies for obesity and associated diseases., Introduction Adipocytes are the most prominent cell type in mature adipose tissue and, in addition to being involved in energy homeostasis, these cells receive and produce a variety of potent [...]
- Published
- 2024
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