Post-Translational Modification and Natural Mutation of TRPC Channels

Area of Science:

• Molecular Biology
• Cell Physiology
• Channelopathies

Background:

• Transient Receptor Potential Canonical (TRPC) channels are nonselective cation channels with high Ca2+ permeability.
• They are activated by diverse stimuli and play vital roles in various mammalian tissues.
• TRPC family comprises seven members, homologous to Drosophila TRP channels.

Purpose of the Study:

• To comprehensively review all reported post-translational modifications (PTMs) of TRPC channels.
• To discuss the physiological and pathophysiological roles of TRPC PTMs.
• To summarize diseases associated with natural TRPC mutations.

Main Methods:

• Literature review and data synthesis.
• Analysis of existing research on TRPC channel function and regulation.
• Integration of findings on TRPC mutations and associated diseases.

Main Results:

• PTMs like phosphorylation, glycosylation, and ubiquitination modulate TRPC channel gating, trafficking, and interactions.
• PTMs contribute to TRPC polymodal activation and regulation in physiological and pathological states.
• TRPC mutations are linked to cerebellar ataxia and focal segmental glomerulosclerosis (FSGS).

Conclusions:

• PTMs are critical regulators of TRPC channel function and cellular processes.
• Dysregulation of TRPC channels through PTMs or mutations contributes to human diseases.
• Further research into TRPC PTMs can reveal new therapeutic targets for channelopathies.