TRP channels as drug targets.

Area of Science:

• Pharmacology
• Cell Biology
• Immunology

Background:

• Calcium (Ca2+) channel antagonists are established therapeutics for electrically-excitable cells.
• Ca2+ influx via receptor-operated channels is crucial in non-excitable cells like leukocytes.
• Exploiting these channels for anti-inflammatory drug development has been limited by a lack of molecular targets.

Purpose of the Study:

• To explore the role of receptor-operated Ca2+ channels in non-excitable cells.
• To identify potential molecular targets for anti-inflammatory therapies.
• To assess the broader significance of these channels in both excitable and non-excitable cells.

Main Methods:

• Investigation of pharmacological agents and their unexpected actions.
• Identification and characterization of transient receptor potential (TRP) cation channels.
• Analysis of Ca2+ influx pathways in leukocytes and other cell types.

Main Results:

• The transient receptor potential (TRP) cation family presents promising candidates for leukocyte Ca2+ influx pathways.
• Receptor-operated Ca2+ influx channels are present in both electrically-excitable and non-excitable cells.
• These findings suggest wider significance and potential for novel drug targets.

Conclusions:

• Transient receptor potential (TRP) channels are key molecular players in receptor-operated Ca2+ influx.
• These channels represent a significant, yet largely unexploited, therapeutic target for anti-inflammatory drugs.
• Understanding these pathways can lead to novel treatments for inflammatory conditions.