Structural and functional evolution of the P2Y(12)-like receptor group

Area of Science:

• Pharmacology
• Molecular Biology
• Neuroscience

Background:

• Metabotropic pyrimidine and purine nucleotide receptors, known as P2Y receptors, are G protein-coupled receptors (GPCRs).
• These receptors bind adenine and/or uracil nucleotide triphosphates or diphosphates, distinguishing them from adenosine receptors (P1).
• Eight functional P2Y receptor subtypes have been characterized, with recent deorphanization of several P2Y(12)-like receptors.

Purpose of the Study:

• To review the structure-function relationships of P2Y(12)-like receptors.
• To summarize the physiological relevance of P2Y(12)-like receptor members.
• To highlight emerging roles in neurotransmission, inflammation, and tissue injury.

Main Methods:

• Literature review of cloned P2Y receptors from various species and tissues.
• Analysis of deorphanized P2Y(12)-like receptors and their agonist specificities.
• Synthesis of functional study results implicating P2Y(12)-like receptors in diverse physiological processes.

Main Results:

• The P2Y(12)-like receptor group includes structurally related GPCRs with varied agonist specificity (nucleotides, lipids).
• P2Y(12) is crucial for platelet activation.
• P2Y(12)-like receptors are expressed in macrophages, neurons, and glial cells, suggesting roles in neurotransmission, inflammation, chemotaxis, and tissue injury response.

Conclusions:

• P2Y(12)-like receptors exhibit diverse functions beyond platelet activation.
• Their expression in neural and immune cells points to significant roles in physiological and pathological processes.
• Further research into their structure-function dynamics is critical for understanding their broader physiological relevance.