GABA Cancer Research Results

Gamma-aminobutyric acid — Gamma-aminobutyric acid is an endogenous non-protein amino acid, inhibitory neurotransmitter, metabolic intermediate, and signaling ligand commonly abbreviated GABA. As a database target, it represents changes in GABA concentration, synthesis, secretion, uptake, extracellular accumulation, or GABA-shunt utilization rather than modulation of a specific GABA receptor. GABA is synthesized from glutamate by GAD1/GAD67 and GAD2/GAD65, transported by GABA transporters, and metabolized primarily by ABAT/GABA transaminase. In cancer, GABA may be produced by tumor, neural, stromal, or immune cells and can influence proliferation, invasion, mitochondrial metabolism, β-catenin signaling, and antitumor immunity. Its biological direction is strongly tumor-, receptor-, concentration-, and compartment-dependent.

Typical cancer modulation: Variable/context-dependent. GABA production, secretion, extracellular accumulation, uptake, or GABA-shunt utilization may be ↑ in tumors that exploit GABA for metabolic adaptation, β-catenin activation, growth, invasion, or immune evasion. GABA signaling may instead suppress proliferation or migration in tumors expressing inhibitory GABA receptor configurations.

Normal-cell relevance: GABA generally reduces neuronal excitability through GABA receptor signaling and also regulates pancreatic, immune, gastrointestinal, vascular, and endocrine functions. In Alzheimer’s disease, reduced phasic inhibition and excessive astrocyte-derived tonic GABA may coexist in different circuits; therefore total GABA direction alone may not indicate whether GABAergic function is beneficial or pathological.

Target classification: Neurotransmitter; amino-acid metabolite; signaling ligand; tumor-microenvironment mediator; metabolic substrate.