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Updated: May 15, 2025

Mechanism of Regulation of Adipocyte Numbers in Adult Organisms Through Differentiation and Apoptosis Homeostasis
Published on: June 3, 2016
Activin Actions in Adipocytes
Luisina Ongaro1, Daniel J Bernard1
1Department of Pharmacology and Therapeutics, McGill University, Montreal, QC H3G 1Y6, Canada.
Abstract:
Obesity is a growing global health problem characterized by excess fat accumulation. Though causes of obesity are multifactorial, glucagon-like peptide 1 receptor agonists have emerged as effective weight loss drugs. Nevertheless, these agents are expensive, not uniformly available, and must be used continuously. Moreover, side effects and low efficacy limit the use of these and related molecules in some individuals. Therefore, there is continued interest in characterizing mechanisms regulating adiposity to aid in the development of novel treatments. In recent years, there has been a growing appreciation for ligands of the TGFβ family, the activins, in adipocyte proliferation, differentiation, and function. Here, we review recent progress in understanding the role of these molecules, with a particular focus on the hepatokine, activin E, in lipolysis and diet-induced obesity.
Insights
Activins, particularly activin E, play a key role in regulating fat metabolism and body weight. Understanding these mechanisms may lead to new obesity treatments beyond current drugs.
Area of Science:
- Endocrinology and Metabolism
- Molecular Biology
- Obesity Research
Background:
- Obesity is a global health issue with complex causes.
- Current weight loss drugs like GLP-1 receptor agonists have limitations including cost, availability, side effects, and continuous use.
- Novel therapeutic targets for obesity are needed.
Purpose of the Study:
- To review the role of transforming growth factor β (TGFβ) superfamily ligands, specifically activins, in adiposity.
- To highlight the function of the hepatokine activin E in lipolysis and diet-induced obesity.
Main Methods:
- Literature review of recent research on activins and obesity.
- Focus on studies investigating activin E's impact on fat cells (adipocytes) and metabolic processes.
- Analysis of activin E's role in lipolysis and response to high-fat diets.
Main Results:
- Activins influence adipocyte proliferation, differentiation, and function.
- Activin E is identified as a key hepatokine involved in regulating fat metabolism.
- Activin E impacts lipolysis and contributes to diet-induced obesity models.
Conclusions:
- Activins, especially activin E, are important regulators of adiposity.
- Further research into activin E pathways could reveal new therapeutic strategies for obesity.
- Targeting activin E may offer an alternative approach to weight management.
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