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Updated: May 9, 2026
08:34
Mechanism of Regulation of Adipocyte Numbers in Adult Organisms Through Differentiation and Apoptosis Homeostasis
Published on: June 3, 2016
Pref-1, a gatekeeper of adipogenesis
Carolyn S Hudak1, Hei Sook Sul
1Department of Nutritional Sciences and Toxicology, University of California , Berkeley, CA , USA.
Frontiers in Endocrinology
|July 11, 2013
Summary
Preadipocyte factor 1 (Pref-1) prevents fat cell differentiation by maintaining the preadipocyte state. Recent evidence highlights its crucial role in regulating adipogenesis and brown fat function.
Area of Science:
- Biochemistry
- Cell Biology
- Molecular Biology
Background:
- Preadipocyte factor 1 (Pref-1), also known as Dlk1/FA1, is a transmembrane protein crucial for regulating adipogenesis.
- Pref-1 maintains the preadipocyte state, inhibiting the differentiation of fat cells.
Purpose of the Study:
- To summarize recent findings on the role of Pref-1 in adipogenesis.
- To highlight Pref-1's function in preventing both white and brown adipocyte differentiation.
Main Methods:
- The study reviews existing literature and evidence regarding Pref-1's molecular mechanisms.
- Analysis of Pref-1's interaction with fibronectin and its effect on the ERK/MAPK pathway.
Main Results:
- Pref-1 is cleaved by TNFα-converting enzyme (TACE) into a soluble form that acts via autocrine/paracrine signaling.
- Pref-1 upregulates Sox9 expression through the ERK/MAPK pathway, inhibiting adipogenesis.
- Pref-1 interaction with fibronectin is essential for blocking adipocyte differentiation.
- Pref-1 also suppresses brown adipocyte differentiation and thermogenic function.
Conclusions:
- Pref-1 acts as a key molecular gatekeeper, preventing adipocyte differentiation.
- Understanding Pref-1's role is vital for potential therapeutic strategies targeting obesity and metabolic disorders.
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