First Author | Shire D | Year | 1996 |
Journal | Biochim Biophys Acta | Volume | 1307 |
Issue | 2 | Pages | 132-6 |
PubMed ID | 8679694 | Mgi Jnum | J:33826 |
Mgi Id | MGI:81319 | Doi | 10.1016/0167-4781(96)00047-4 |
Citation | Shire D, et al. (1996) Molecular cloning, expression and function of the murine CB2 peripheral cannabinoid receptor. Biochim Biophys Acta 1307(2):132-6 |
abstractText | We have cloned the peripheral cannabinoid receptor, mCB2, from a mouse splenocyte cDNA library. The 3.7 kb sequence contains an open reading frame encoding a protein of 347 residues sharing 82% overall identity with the only other known peripheral receptor, human CB2 (hCB2) and shorter than hCB2 by 13 amino acids at the carboxyl terminus. Binding experiments with membranes from COS-3 cells transiently expressing mCB2 showed that the synthetic cannabinoid WIN 55212-2 had a 6-fold lower affinity for mCB2 than for hCB2, whereas both receptors showed similar affinities for the agonists CP 55,940, delta(9)-THC and anandamide and almost no affinity for the central receptor- (CB1) specific antagonist SR 141716A. Both hCB2 and mCB2 mediate agonist-stimulated inhibition of forskolin-induced cAMP production in CHO cell lines permanently expressing the receptors. SR 141716A failed to antagonize this activity in either cell line, confirming its specificity for CB1. |