Chemistry:Bombesin

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Bombesin
Bombesin skeletal.svg
Names
Other names
Pyr-Gln-Arg-Leu-Gly-Asn-Gln-Trp-Ala-Val-Gly-His-Leu-Met-NH2
Identifiers
3D model (JSmol)
ChEMBL
ChemSpider
UNII
Properties
C71H110N24O18S
Molar mass 1619.85
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Bombesin is a 14-amino acid peptide[1] originally isolated from the skin of the European fire-bellied toad (Bombina bombina)[2] by Vittorio Erspamer et al. and named after its source.[3] It has two known homologs in mammals called neuromedin B and gastrin-releasing peptide. It stimulates gastrin release from G cells. It activates three different G-protein-coupled receptors known as BBR1, -2, and -3.[4] It also activates these receptors in the brain. Together with cholecystokinin, it is the second major source of negative feedback signals that stop eating behaviour.[5]

Bombesin is also a tumor marker for small cell carcinoma of lung, gastric cancer, pancreatic cancer, and neuroblastoma.[6]

Receptors

The anuran BB4 receptor homologue is termed frog BB4 (fBB4).[3] Iwabuchi et al. 2003 discovered a chicken (Gallus domesticus) receptor which is homologous to both the mammalian BB3 and fBB4 and so they named it chBRS-3.5.[3]

Effects

Erspamer 1988 finds bombesin has a similar effect on the chicken to ranatensin, unreliably increasing or decreasing blood pressure.[7]

See also

References

  1. "Bombesin-related peptides and their receptors: recent advances in their role in physiology and disease states". Current Opinion in Endocrinology, Diabetes and Obesity 15 (1): 58–64. February 2008. doi:10.1097/MED.0b013e3282f3709b. PMID 18185064. 
  2. 3.0 3.1 3.2 Jensen, R. T.; Battey, J. F.; Spindel, E. R.; Benya, R. V. (2007-11-30). "International Union of Pharmacology. LXVIII. Mammalian Bombesin Receptors: Nomenclature, Distribution, Pharmacology, Signaling, and Functions in Normal and Disease States". Pharmacological Reviews (American Society for Pharmacology & Experimental Therapeutics (ASPET)) 60 (1): 1–42. doi:10.1124/pr.107.07108. ISSN 0031-6997. PMID 18055507.  NIHMSID 45053.
  3. Weber HC (February 2009). "Regulation and signaling of human bombesin receptors and their biological effects". Current Opinion in Endocrinology, Diabetes and Obesity 16 (1): 66–71. doi:10.1097/med.0b013e32831cf5aa. PMID 19115523. 
  4. "Bombesin-like peptides: studies on food intake and social behaviour with receptor knock-out mice". Annals of Medicine 32 (8): 519–29. November 2000. doi:10.3109/07853890008998831. PMID 11127929. 
  5. "The effect of bombesin, cholecystokinin, gastrin, and their antagonists on proliferation of pancreatic cancer cell lines". Scandinavian Journal of Gastroenterology 34 (12): 1224–9. December 1999. doi:10.1080/003655299750024742. PMID 10636070.