POU2AF1 promotes MSCs adipogenesis by inhibiting HDAC1 expression

Area of Science:

• Cell Biology
• Molecular Biology
• Biochemistry

Background:

• Excess visceral adipose tissue is a significant risk factor for numerous diseases.
• Inhibiting adipogenesis in mesenchymal stem cells (MSCs) is a key strategy to reduce adipose tissue accumulation.
• The role of POU class 2 homeobox associating factor 1 (POU2AF1) in MSC adipogenesis requires further elucidation.

Purpose of the Study:

• To investigate the role of POU2AF1 in the adipogenesis of human adipose-derived MSCs.
• To explore the underlying signaling pathway involving histone deacetylases 1 (HDAC1).
• To assess the potential of POU2AF1 as a therapeutic target for managing obesity and related diseases.

Main Methods:

• Isolation of human retroperitoneal adipose-derived MSCs from overweight and control patients.
• Gene expression analysis using IncRNA microarray.
• Manipulation of POU2AF1 and HDAC1 levels via adenovirus transduction and small-interfering RNA.
• Assessment of adipogenesis using Oil-red O staining, triglyceride and cholesterol assays, real-time PCR, and Western Blot.

Main Results:

• POU2AF1 expression was elevated in overweight patients' adipose tissue and increased during adipogenesis.
• POU2AF1 overexpression promoted MSC adipogenesis, while its silencing inhibited it.
• POU2AF1 overexpression reduced nuclear translocation and mRNA levels of HDAC1.
• Co-transfection with HDAC1 partially reversed POU2AF1's pro-adipogenic effects.

Conclusions:

• POU2AF1 plays a crucial role in human MSC adipogenesis through HDAC1 signaling.
• Modulating POU2AF1 expression offers a potential strategy to control adipose tissue development.
• Targeting POU2AF1 may provide a novel therapeutic approach for metabolic disorders associated with excessive adipose tissue.