Astrocyte cell-surface receptor

Astrocyte cell-surface receptor refers to a broad category of membrane-bound proteins, including G protein-coupled receptors (GPCRs), ion channels, and neurotransmitter transporters, that facilitate communication between astrocytes and neurons (Verkhratsky & Nedergaard, 2018, Physiological Reviews). These receptors are fundamental to the 'tripartite synapse' model, where they actively monitor and modulate synaptic activity by sensing neurotransmitters like glutamate and GABA (Nedergaard et al., 2003, Science). Key examples include the Excitatory Amino Acid Transporters (EAAT1/2), metabotropic glutamate receptors (mGluRs), and the water channel Aquaporin-4 (AQP4), which is critical for glymphatic clearance and blood-brain barrier integrity (Nagelhus & Ottersen, 2013, Physiological Reviews). In pathological states such as Alzheimer's disease, epilepsy, and stroke, the expression and function of these receptors are often altered, contributing to neuroinflammation or excitotoxicity (Pekny & Nilsson, 2005, Nature Reviews Neuroscience). While individual receptors like GLT-1 or mGluR5 are specific therapeutic targets, the collective group represents a broad interface for modulating CNS health (Rothstein et al., 2005, Nature). Targeting these receptors offers potential for treating various neurological disorders, though the complexity of astrocytic signaling poses significant challenges for drug specificity and safety.

Other names

Astrocyte cell-surface receptorsAstrocytic membrane receptorsGlial cell-surface receptorsAstrocyte-specific receptors

Modulation of astrocytic receptors typically involves enhancing neurotransmitter clearance via transporter induction or regulating synaptic excitability through GPCR antagonism (Rothstein et al., 2005, Nature; Verkhratsky & Nedergaard, 2018, Physiological Reviews).