miR‑214 mediates vascular inflammation and apoptosis via PTEN expression

Area of Science:

• Vascular Biology
• Molecular Biology
• Inflammation Research

Background:

• MicroRNAs (miRNAs) are crucial regulators of cellular processes.
• Vascular inflammation and apoptosis are key contributors to cardiovascular diseases.
• The specific role of miR-214 in vascular responses requires further elucidation.

Purpose of the Study:

• To investigate the function of miR-214 in vascular inflammation and apoptosis.
• To explore the underlying molecular mechanisms of miR-214's action.
• To determine the involvement of the PTEN/Akt signaling pathway.

Main Methods:

• Human Umbilical Vein Endothelial Cells (HUVECs) were treated with anti-miR-214 mimics.
• Cell viability and apoptosis were assessed using MTT assay and flow cytometry.
• Inflammatory cytokine levels (TNF-α, IL-1β, IL-6, IL-18) and protein expression (caspase-3/9, Bax, PTEN, NF-κB, p-Akt) were analyzed via ELISA and Western blotting.

Main Results:

• Downregulation of miR-214 increased apoptosis and inflammatory cytokine levels in TNF-α-induced HUVECs.
• Anti-miR-214 treatment elevated Bax, PTEN, and NF-κB expression while decreasing p-Akt.
• Inhibition of PTEN reversed the pro-apoptotic and pro-inflammatory effects of anti-miR-214.

Conclusions:

• miR-214 mediates vascular inflammation and apoptosis.
• The mechanism involves the regulation of PTEN expression and the PTEN/Akt signaling pathway.
• Targeting miR-214 could be a potential therapeutic strategy for vascular diseases.