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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Generation and characterization of mice lacking gastrin-releasing peptide receptor.

Gastrin-releasing peptide (GRP) is a mammalian bombesin-like peptide which is widely distributed in the central nervous system as well as in the gastrointestinal tract. GRP binds to its high affinity receptor (GRPR) to elicit a wide spectrum of biological effects on behavior, digestion, and metabolism. To define the in vivo function of GRPR, we generated GRPR null mutant mice by gene targeting. The intracerebroventricular administration of GRP caused hypothermia in wild-type mice, but not in mutant mice. The GRPR deficient mice showed significantly increased locomotor activity during the dark period, and social responses scored by sniffing, mounting, and approaching behaviors against an intruder. Aggressive scores such as fighting and biting were not altered in the mutant mice. These phenotypes were observed in mice generated from two independent ES cell clones and backcrossed to a C57BL/6J background. The GRPR deficient mice should be useful for studying the bombesin system in vivo.[1]


  1. Generation and characterization of mice lacking gastrin-releasing peptide receptor. Wada, E., Watase, K., Yamada, K., Ogura, H., Yamano, M., Inomata, Y., Eguchi, J., Yamamoto, K., Sunday, M.E., Maeno, H., Mikoshiba, K., Ohki-Hamazaki, H., Wada, K. Biochem. Biophys. Res. Commun. (1997) [Pubmed]
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