Pin1 in cardiovascular dysfunction: A potential double-edge role.

Area of Science:

• Biochemistry
• Molecular Biology
• Cardiovascular Research

Background:

• Pin1 is the sole known cis-trans isomerase for pSer/pThr-Pro motifs, crucial for signaling pathways.
• Pin1's role in diabetes-induced vascular dysfunction and nitric oxide (NO) regulation is debated.
• NO is vital for vascular relaxation, but Pin1's influence on cardiovascular diseases remains controversial.

Purpose of the Study:

• To investigate the dual role of Pin1 in regulating NO production.
• To explore the molecular mechanisms behind Pin1's controversial effects on cardiovascular health.
• To compare Pin1's regulation of endothelial nitric oxide synthase (eNOS) and inducible nitric oxide synthase (iNOS).

Main Methods:

• Comparative analysis of existing studies on Pin1's effects on NO production.
• Examination of molecular mechanisms underlying Pin1's regulation of eNOS and iNOS.
• Review of data from various animal models and cell lines.

Main Results:

• Pin1 exhibits a dual regulatory effect on NO production, acting both positively and negatively.
• Pin1 influences both eNOS and iNOS, contributing to paradoxical functions.
• Complex Pin1-mediated signaling networks impact in vivo cellular responses and NO levels.

Conclusions:

• Pin1 plays a dual role in NO production and cardiovascular disease pathogenesis.
• Pin1's functions are context-dependent and vary across different models.
• Future research should prioritize eNOS and iNOS to clarify Pin1's precise role.