N-acyl dopamines induce apoptosis in PC12 cell line via the GPR55 receptor activation

Area of Science:

• Neuroscience
• Cell Biology
• Pharmacology

Background:

• Dopamine amides are endogenous compounds with potential biological activities.
• PC12 cells are a widely used model for neuronal function and drug screening.
• The G protein-coupled receptor 55 (GPR55) is implicated in various physiological and pathological processes.

Purpose of the Study:

• To investigate the effect of dopamine amides of specific fatty acids on PC12 cell viability.
• To identify the receptor involved in mediating the cellular response to these compounds.

Main Methods:

• Treatment of PC12 cells with dopamine amides of arachidonic, docosahexaenoic, and oleic acids.
• Assessment of apoptosis induction using standard cell death assays.
• Pharmacological manipulation using GPR55 antagonists and agonists.

Main Results:

• Dopamine amides of arachidonic, docosahexaenoic, and oleic acids induced apoptosis in PC12 cells.
• GPR55 receptor antagonists and agonists blocked the apoptotic effect.
• The observed effects were specific to GPR55, as non-CB1/CB2 receptor interactions were investigated.

Conclusions:

• Dopamine amides of these fatty acids represent novel inducers of apoptosis in neuronal-like cells.
• The GPR55 receptor plays a critical role in mediating the apoptotic effects of these compounds.
• Targeting GPR55 may offer a therapeutic strategy for conditions involving excessive cell death.