Biology:VIPR2

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Short description: Protein-coding gene in the species Homo sapiens


A representation of the 3D structure of the protein myoglobin showing turquoise α-helices.
Generic protein structure example


Vasoactive intestinal peptide receptor 2 also known as VPAC2, is a G-protein coupled receptor that in humans is encoded by the VIPR2 gene.[1]

Tissue distribution

VIPR2 is expressed in the uterus, prostate, smooth muscle of the gastrointestinal tract, seminal vesicles and skin, blood vessels and thymus.[2][3] VIPR2 is also expressed in the cerebellum.[4]

Function

Vasoactive intestinal peptide (VIP) and pituitary adenylate cyclase activating polypeptide (PACAP) are homologous peptides that function as neurotransmitters and neuroendocrine hormones. While the receptors for VIP (VIRP 1 and 2) and PACAP (ADCYAP1R1) share homology, they differ in their substrate specificities and expression patterns.[1] VIPR2 transduction results in upregulation of adenylate cyclase activity.[5] Furthermore, VIPR2 mediates the anti-inflammatory effects of VIP.[6]

Research using VPAC2 knockout mice implicate it in the function of the circadian clock, growth, basal energy expenditure and male reproduction.[7][8][9][10]

VIPR2 and/or PAC1 receptor activation is involved in cutaneous active vasodilation in humans.[11]

Splice variants may modify the immunoregulatory contributions of the VIP-VIPR2 axis.[12]

VIPR2 may contribute to autoregulation and/or coupling within the suprachiasmatic nucleus (SCN) core and to control of the SCN shell.[13]

Clinical significance

VIPR2 may play a role in schizophrenia.[14]

The abnormal expression of VIPR2 messenger RNA in gallbladder tissue may play a role in the formation of gall stones and polyps.[15]

See also

References

  1. ↑ 1.0 1.1 "Entrez Gene: VIPR2 vasoactive intestinal peptide receptor 2". https://www.ncbi.nlm.nih.gov/gene?Db=gene&Cmd=ShowDetailView&TermToSearch=7434. 
  2. ↑ Reubi JC (2000). "In vitro evaluation of VIP/PACAP receptors in healthy and diseased human tissues. Clinical implications.". Ann N Y Acad Sci 921 (1): 1–25. doi:10.1111/j.1749-6632.2000.tb06946.x. PMID 11193811. Bibcode: 2000NYASA.921....1R. 
  3. ↑ "Vasoactive intestinal peptide/pituitary adenylate cyclase-activating peptide receptor subtypes in human tumors and their tissues of origin.". Cancer Res 60 (11): 3105–3112. 2000. PMID 10850463. 
  4. ↑ "Localization and characterization of pituitary adenylate cyclase-activating polypeptide receptors in the human cerebellum during development". J. Comp. Neurol. 496 (4): 468–78. June 2006. doi:10.1002/cne.20934. PMID 16572459. 
  5. ↑ "IUPHAR-DB VPAC2 receptor Redirect". http://www.iuphar-db.org/DATABASE/ObjectDisplayForward?objectId=372. 
  6. ↑ "Differential expression of vasoactive intestinal peptide and its functional receptors in human osteoarthritic and rheumatoid synovial fibroblasts". Arthritis Rheum. 58 (4): 1086–95. April 2008. doi:10.1002/art.23403. PMID 18383383. 
  7. ↑ "The VPAC2 receptor is essential for circadian function in the mouse suprachiasmatic nuclei.". Cell 109 (4): 497–508. 2002. doi:10.1016/S0092-8674(02)00736-5. PMID 12086606. 
  8. ↑ "The mouse VPAC2 receptor confers suprachiasmatic nuclei cellular rhythmicity and responsiveness to vasoactive intestinal polypeptide in vitro". Eur. J. Neurosci. 17 (2): 197–204. January 2003. doi:10.1046/j.1460-9568.2003.02425.x. PMID 12542655. 
  9. ↑ "Aberrant gating of photic input to the suprachiasmatic circadian pacemaker of mice lacking the VPAC2 receptor". J. Neurosci. 24 (14): 3522–6. April 2004. doi:10.1523/JNEUROSCI.5345-03.2004. PMID 15071099. 
  10. ↑ "Vasoactive intestinal polypeptide/pituitary adenylate cyclase-activating peptide receptor 2 deficiency in mice results in growth retardation and increased basal metabolic rate". Endocrinology 143 (10): 3994–4006. October 2002. doi:10.1210/en.2002-220354. PMID 12239111. 
  11. ↑ "VIP/PACAP receptor mediation of cutaneous active vasodilation during heat stress in humans". J. Appl. Physiol. 109 (1): 95–100. July 2010. doi:10.1152/japplphysiol.01187.2009. PMID 20395540. 
  12. ↑ "Functional splice variants of the type II G protein-coupled receptor (VPAC2) for vasoactive intestinal peptide in mouse and human lymphocytes". Ann. N. Y. Acad. Sci. 1070 (1): 422–6. July 2006. doi:10.1196/annals.1317.055. PMID 16888203. Bibcode: 2006NYASA1070..422M. 
  13. ↑ "Transgenic approach reveals expression of the VPAC2 receptor in phenotypically defined neurons in the mouse suprachiasmatic nucleus and in its efferent target sites". Eur. J. Neurosci. 19 (8): 2201–11. April 2004. doi:10.1111/j.0953-816X.2004.03335.x. PMID 15090046. 
  14. ↑ "Copy Number Variants in Schizophrenia: Confirmation of Five Previous Findings and New Evidence for 3q29 Microdeletions and VIPR2 Duplications". Am J Psychiatry 168 (3): 302–316. February 2011. doi:10.1176/appi.ajp.2010.10060876. PMID 21285140. 
  15. ↑ "Expression of pituitary adenylate cyclase-activating polypeptide 1 and 2 receptor mRNA in gallbladder tissue of patients with gallstone or gallbladder polyps". World J. Gastroenterol. 12 (9): 1468–71. March 2006. doi:10.3748/wjg.v12.i9.1468. PMID 16552823. 

Further reading

This article incorporates text from the United States National Library of Medicine, which is in the public domain.