Extracellular Vesicles Contribute to Oxidized LDL-Induced Stromal Cell Proliferation in Benign Prostatic Hyperplasia

Area of Science:

• Urology
• Cell Biology
• Metabolic Syndrome

Background:

• Benign Prostatic Hyperplasia (BPH) is clinically linked to dyslipidemia and hypercholesterolemia.
• The cellular mechanisms driving this association remain largely undefined.
• This study focuses on oxidized LDL (OxLDL) and its effects on prostatic stromal cells and extracellular vesicles (EVs).

Purpose of the Study:

• To investigate the impact of dyslipidemia, specifically OxLDL, on prostatic stromal cell proliferation.
• To examine the role of extracellular vesicles (EVs) in BPH progression under dyslipidemic conditions.
• To evaluate the potential of metformin as a therapeutic intervention.

Main Methods:

• Mice were subjected to a high-fat diet to induce dyslipidemia.
• Human prostatic stromal cells (HPSCs) were exposed to OxLDL.
• Cell proliferation assays and EV characterization were conducted.
• The effects of metformin on OxLDL-induced proliferation were assessed.

Main Results:

• Pro-atherogenic conditions significantly enhanced proliferation in both murine and human prostatic stromal cells.
• Oxidized LDL stimulated HPSCs to produce and release pro-proliferative EVs.
• These EVs further amplified cellular proliferation, suggesting a role in BPH pathogenesis.
• Metformin treatment effectively inhibited OxLDL-induced prostatic stromal cell proliferation.

Conclusions:

• Dyslipidemia, driven by OxLDL, significantly contributes to prostatic stromal cell proliferation and EV secretion, exacerbating BPH.
• Metformin shows promise as a therapeutic agent to counteract these dyslipidemia-induced effects in BPH.
• This research elucidates the intricate relationship between metabolic health, cellular communication via EVs, and BPH development.