VGF or VGF nerve growth factor inducible is a secreted protein and neuropeptide precursor that may play a role in regulating energy homeostasis, metabolism[5] and synaptic plasticity.[6] The protein was first discovered in 1985 by Levi et al.[7] in an experiment with PC12 cells and its name is non-acronymic. VGF gene encodes a precursor which is divided by proteolysis to polypeptides of different mass, which have a variety of functions, the best studied of which are the roles of TLQP-21 in the control of appetite and inflammation,[8][9][10][11][12][13][14][15] and TLQP-62 as well as AQEE-30 in regulating depression-like behaviors[16][17][18][19][20] and memory.[21][22] The expression of VGF and VGF-derived peptides is detected in a subset of neurons in the central and peripheral nervous systems and specific populations of endocrine cells in the adenohypophysis, adrenal medulla, gastrointestinal tract, and pancreas.[23] VGF expression is induced by NGF, CREB and BDNF and regulated by neurotrophin-3.[24]Physical exercise significantly increases VGF expression in mice hippocampal tissue and upregulates a neurotrophic signaling cascade thought to underlie the action of antidepressants.[16][25][26][27]
^Rizzi R, Bartolomucci A, Moles A, D'Amato F, Sacerdote P, Levi A, La Corte G, Ciotti MT, Possenti R, Pavone F (August 2008). "The VGF-derived peptide TLQP-21: a new modulatory peptide for inflammatory pain". Neuroscience Letters. 441 (1): 129–33. doi:10.1016/j.neulet.2008.06.018. PMID18586396. S2CID207127085.
^Bartolomucci A, Moles A, Levi A, Possenti R (September 2008). "Pathophysiological role of TLQP-21: gastrointestinal and metabolic functions". Eating and Weight Disorders. 13 (3): e49-54. PMID19011364.
^Jethwa PH, Ebling FJ (2008). "Role of VGF-derived peptides in the control of food intake, body weight and reproduction". Neuroendocrinology. 88 (2): 80–7. doi:10.1159/000127319. PMID18408361. S2CID207626224.
^Levi A, Ferri GL, Watson E, Possenti R, Salton SR (August 2004). "Processing, distribution, and function of VGF, a neuronal and endocrine peptide precursor". Cellular and Molecular Neurobiology. 24 (4): 517–33. doi:10.1023/B:CEMN.0000023627.79947.22. PMID15233376. S2CID36298228.