3-Guanidinopropionic Acid

3-Guanidinopropionic Acid (CAS No.: 353-09-3) is a synthetic guanidino compound and creatine analog widely utilized in metabolic and bioenergetics research as a modulator of cellular energy homeostasis. It functions primarily as an activator of AMP-activated protein kinase (AMPK) and an inducer of PPARγ coactivator 1α (PGC-1α)-mediated transcriptional programs, thereby promoting mitochondrial biogenesis, oxidative phosphorylation, and a metabolic shift from glycolytic to oxidative pathways. Through its interaction with the creatine transporter and creatine kinase system, 3-guanidinopropionic acid reduces intracellular creatine, phosphocreatine, and ATP levels, leading to compensatory AMPK activation and downstream effects including enhanced glucose uptake, increased fatty acid oxidation, and modulation of lipid and cholesterol biosynthesis. These activities position the compound as a useful tool for investigating metabolic disorders, insulin resistance, and mitochondrial function, as well as for studying muscle physiology and adaptation to energetic stress. In vitro and in vivo studies indicate activity across low micromolar to millimolar concentration ranges depending on the model system, with demonstrated effects on glucose metabolism and energy balance in cellular assays and animal models of diabetes and obesity. Experimental applications commonly involve controlled dosing strategies tailored to specific study endpoints, making 3-guanidinopropionic acid a valuable probe for dissecting AMPK-dependent signaling pathways and metabolic reprogramming in both physiological and disease contexts.