EP1 receptor: Devil in emperors coat

Area of Science:

• Molecular Biology
• Neuroscience
• Oncology

Background:

• The EP1 receptor, activated by prostaglandin E2, exhibits contrasting roles in the central nervous system (CNS) and various cancers.
• In the CNS, it mediates neurotoxicity and apoptosis, contributing to neurological disorders like Alzheimer's and Parkinson's diseases.
• Conversely, in cancers, the EP1 receptor can promote cell survival, proliferation, invasion, and metastasis.

Purpose of the Study:

• To review the pathogenic roles of EP1 receptors in neurological disorders and cancer.
• To highlight the potential of EP1 receptor antagonists as therapeutic targets.

Main Methods:

• Literature review of studies on EP1 receptor function in CNS and cancer.
• Analysis of signaling pathways modulated by EP1 receptor activation.
• Examination of existing EP1 receptor antagonists.

Main Results:

• EP1 receptor activation increases cytosolic Ca2+ levels, leading to protein kinase C activation and neurotoxicity.
• EP1 receptor antagonists like ONO-8713, SC51089, and SC51322 attenuate neuroinflammation and neurotoxic effects.
• EP1 receptor expression is elevated in cancers, promoting survival via AKT and PTEN pathways.

Conclusions:

• The EP1 receptor plays a significant pathogenic role in both neurological disorders and cancer.
• Despite limited clinical trials, EP1 receptor antagonists represent a promising therapeutic strategy.