Alpha-10 nicotinic acetylcholine receptor (α10 nAChR)

The alpha-10 nicotinic acetylcholine receptor (α10 nAChR) is a protein subunit that primarily forms heteromeric complexes with the alpha-9 subunit to create functional ligand-gated ion channels (UniProt: Q9GZZ6). These receptors are uniquely characterized by their mixed pharmacology, exhibiting sensitivity to both nicotinic and muscarinic ligands, and are predominantly expressed in the inner ear hair cells, dorsal root ganglia, and immune cells (PubMed: 11158627). In the auditory system, α9α10 receptors are essential for the efferent olivocochlear system, which modulates hearing sensitivity and protects against noise-induced damage (PubMed: 15705709). In the peripheral nervous system, they are significant targets for treating neuropathic pain and chronic inflammation, as their inhibition can suppress the release of pro-inflammatory cytokines and reduce mechanical hyperalgesia (PubMed: 25193315). Research into α10-containing receptors has led to the development of selective antagonists, such as alpha-conotoxins (e.g., RgIA, Vc1.1), which offer a non-opioid pathway for pain management (PubMed: 21212188). Additionally, the receptor's involvement in certain malignancies, such as breast and lung cancer, suggests a potential role as a biomarker or therapeutic target in oncology (PubMed: 20802021). The α10 subunit is critical for the proper assembly and surface expression of the functional receptor, distinguishing it from the homomeric α9 receptor (PubMed: 11158627). Therapeutic development targeting this receptor must balance analgesic efficacy with the potential for auditory side effects (PubMed: 25193315).

Other names

CHRNA10Cholinergic receptor nicotinic alpha 10 subunitNicotinic acetylcholine receptor subunit alpha-10nAChR alpha 10

Antagonism of the alpha-9/alpha-10 heteromeric receptor complex to inhibit pro-nociceptive signaling and modulate inflammatory responses.