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Mechanism of Regulation of Adipocyte Numbers in Adult Organisms Through Differentiation and Apoptosis Homeostasis
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Homeobox C4 Transcription Factor Promotes Adipose Tissue Thermogenesis
Ting Yang1,2, Yuxuan Wang3, Hang Li3
1Department of Pharmacology, School of Basic Medical Sciences, Capital Medical University, Beijing, China.
Diabetes
|January 24, 2025
Summary
Homeobox C4 (HOXC4) influences metabolism and body weight in mice. This gene promotes adipose thermogenesis and metabolic health by activating Ucp1 gene expression.
Area of Science:
- Metabolic pathways
- Adipose tissue biology
- Gene regulation
Background:
- Homeobox C4 (HOXC4) is implicated in metabolic regulation.
- HOXC4 expression correlates inversely with body weight and positively with Ucp1 in mice.
- Adipose tissue thermogenesis is crucial for metabolic health.
Purpose of the Study:
- To investigate the role of HOXC4 in adipose thermogenesis and metabolic regulation.
- To elucidate the molecular mechanism by which HOXC4 regulates Ucp1 transcription.
Main Methods:
- Gain- and loss-of-function experiments in mice.
- Analysis of HOXC4's interaction with nuclear receptor coactivator 1.
- Assessment of Ucp1 gene expression and adipose tissue function.
Main Results:
- HOXC4 is essential for promoting adipose thermogenesis and metabolic benefits in mice.
- HOXC4 directly activates Ucp1 transcription.
- A novel hexapeptide motif in HOXC4 mediates interaction with nuclear receptor coactivator 1.
Conclusions:
- HOXC4 plays a critical role in regulating energy expenditure and metabolic homeostasis.
- HOXC4's interaction with coactivators provides a new mechanism for controlling thermogenic gene expression.
- Targeting HOXC4 may offer therapeutic strategies for metabolic disorders.
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