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]
Role in pathology
Changes in expression of discrete VGF fragments have been detected in different neurological and psychiatric conditions. In
schizophrenia, one study has shown an increase in the VGF23-62 peptide[28] and a subsequent small study demonstrated that drugs further increase the expression, pointing at a possible ameliorating action of the fragment. A decreased expression of VGF26-62 peptide was found in
frontotemporal dementia[29] and the expression of a fragment containing aminoacids 378-398 was found to be changing in
amyotrophic lateral sclerosis[30] and
Alzheimer's disease.[31] VGF expression has also been shown in damaged peripheral nerves, and it is thought to have a role in
neuropathic pain.[32] In
glioblastoma, VGF has been shown to play autocrine and paracrine roles in feedback loops between differentiated glioblastoma cells and glioblastoma-specific
cancer stem cells, promoting growth, survival and self-renewal.[33]
^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.
^Carrette O, Demalte I, Scherl A, Yalkinoglu O, Corthals G, Burkhard P, Hochstrasser DF, Sanchez JC (August 2003). "A panel of cerebrospinal fluid potential biomarkers for the diagnosis of Alzheimer's disease". Proteomics. 3 (8): 1486–94.
doi:
10.1002/pmic.200300470.
PMID12923774.
S2CID25445068.
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]
Role in pathology
Changes in expression of discrete VGF fragments have been detected in different neurological and psychiatric conditions. In
schizophrenia, one study has shown an increase in the VGF23-62 peptide[28] and a subsequent small study demonstrated that drugs further increase the expression, pointing at a possible ameliorating action of the fragment. A decreased expression of VGF26-62 peptide was found in
frontotemporal dementia[29] and the expression of a fragment containing aminoacids 378-398 was found to be changing in
amyotrophic lateral sclerosis[30] and
Alzheimer's disease.[31] VGF expression has also been shown in damaged peripheral nerves, and it is thought to have a role in
neuropathic pain.[32] In
glioblastoma, VGF has been shown to play autocrine and paracrine roles in feedback loops between differentiated glioblastoma cells and glioblastoma-specific
cancer stem cells, promoting growth, survival and self-renewal.[33]
^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.
^Carrette O, Demalte I, Scherl A, Yalkinoglu O, Corthals G, Burkhard P, Hochstrasser DF, Sanchez JC (August 2003). "A panel of cerebrospinal fluid potential biomarkers for the diagnosis of Alzheimer's disease". Proteomics. 3 (8): 1486–94.
doi:
10.1002/pmic.200300470.
PMID12923774.
S2CID25445068.