Neurotensin
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Overview
Neurotensin is a 13 amino acid neuropeptide that is implicated in the regulation of luteinizing hormone and prolactin release and has significant interaction with the dopaminergic system. Neurotensin was first isolated from extracts of bovine hypothalamus based on its ability to cause a visible vasodilation in the exposed cutaneous regions of anesthetized rats.[1]
Structure
The sequence of bovine neurotensin was determined to be pyroGlu-Leu-Tyr-Glu-Asn-Lys-Pro-Arg-Arg-Pro-Tyr-Ile-Leu-OH.[2] Neurotensin is synthesized as part of a 169-170 amino acid precursor protein that also contains the related neuropeptide neuromedin N.[3][4] The peptide coding domains are located in tandem near the carboxyl terminal end of the precursor and are bounded and separated by paired basic amino acid (lysine-arginine) processing sites.
Clinical significance
It has been associated with colorectal cancer.[5]
See also
References
- ↑ Carraway R, Leeman SE (1973). "The isolation of a new hypotensive peptide, neurotensin, from bovine hypothalami". J. Biol. Chem. 248 (19): 6854–61. PMID 4745447.
- ↑ Carraway R, Leeman SE (1975). "The amino acid sequence of a hypothalamic peptide, neurotensin". J. Biol. Chem. 250 (5): 1907–11. PMID 1167549.
- ↑ Dobner PR, Barber DL, Villa-Komaroff L, McKiernan C (1987). "Cloning and sequence analysis of cDNA for the canine neurotensin/neuromedin N precursor". Proc. Natl. Acad. Sci. U.S.A. 84 (10): 3516–20. doi:10.1073/pnas.84.10.3516. PMID 3472221.
- ↑ Kislauskis E, Bullock B, McNeil S, Dobner PR (1988). "The rat gene encoding neurotensin and neuromedin N. Structure, tissue-specific expression, and evolution of exon sequences". J. Biol. Chem. 263 (10): 4963–8. PMID 2832414.
- ↑ Wang X, Wang Q, Ives KL, Evers BM (2006). "Curcumin inhibits neurotensin-mediated interleukin-8 production and migration of HCT116 human colon cancer cells". Clin. Cancer Res. 12 (18): 5346–55. doi:10.1158/1078-0432.CCR-06-0968. PMID 17000667.
External links
- Neurotensin at the US National Library of Medicine Medical Subject Headings (MeSH)
Acknowledgements
The content on this page was first contributed by: C. Michael Gibson, M.S., M.D.
Initial content for this page in some instances came from Wikipedia
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