Cancer prevention awareness and the cannabinoid system are the focus of February’s health update from Publius and The Cannabis Papers: A citizen’s guide to cannabinoids (2011). This month: PubMed science on inflammation, a unique receptor, GPR55, and the ability of one’s cannabinoid system to induce apoptosis, programmed cancer cell death.
2014 ~ Inflammation (HIV-1) and CS/GPR55
“Receptors for THC, CB1, CB2, and GPR55, are differentially expressed on multiple cell types including monocytes and macrophages, which are important modulators of inflammation in vivo and target cells for HIV-1 infection.”
Δ9-Tetrahydrocannabinol Treatment During Human Monocyte Differentiation Reduces Macrophage Susceptibility to HIV-1 Infection.
Williams JC, Appelberg S, Goldberger BA, Klein TW, Sleasman JW, Goodenow MM.
J Neuroimmune Pharmacol. 2014 Feb 23. [Epub ahead of print]
PMID: 24562630 [PubMed - as supplied by publisher]
2013 ~ Alcohol, Dentric Cells and CS/GPR55
"Our results provide insights into alcohol mechanisms of DC [dentric cell] regulation and show, for the first time, that alcohol is inducing CNR2 [CB2] and GPR55 in human DCs."
Differential expression and functional role of cannabinoid genes in alcohol users.
Agudelo M, Yndart A, Morrison M, Figueroa G, Muñoz K, Samikkannu T, Nair MP.
Drug Alcohol Depend. 2013 Dec 1;133(2):789-93. doi: 10.1016/j.drugalcdep.2013.08.023. Epub 2013 Sep 5.
PMID: 24060590 [PubMed - in process]
2013 ~ Inflammation (Cancer) and CS/GPR55
“GPR55 has been shown to have a role in cancer and gastrointestinal inflammation, as well as in obesity and type 2 diabetes mellitus (T2DM).”
A potential role for GPR55 in the regulation of energy homeostasis.
Simcocks AC, O'Keefe L, Jenkin KA, Mathai ML, Hryciw DH, McAinch AJ.
Drug Discov Today. 2013 Dec 24. pii: S1359-6446(13)00423-6. doi: 10.1016/j.drudis.2013.12.005. [Epub ahead of print] Review.
PMID: 24370891 [PubMed - as supplied by publisher]
2013 ~ CS Synergistic Against Cancer
“The observed synergistic effect with cannabinoid agonists implicates an involvement of the cannabinoid system.”
Cytotoxic effect of efavirenz is selective against cancer cells and associated with the cannabinoid system.
Hecht M, Harrer T, Büttner M, Schwegler M, Erber S, Fietkau R, Distel LV.
AIDS. 2013 Aug 24;27(13):2031-40. doi: 10.1097/QAD.0b013e3283625444.
PMID: 23612009 [PubMed - in process]
2011 ~ GPR55 Driving Cancer Cell Migration
“It has now been revealed that LPI [L-α-lysophosphatidylinositol] activates GPR55, a G protein-coupled receptor that couples to G(12/13) and G(q) proteins, which direct oncogenic signalling. New evidence indicates that LPI and GPR55 are key partners in driving cancer cell proliferation and migration.”
L-α-lysophosphatidylinositol meets GPR55: a deadly relationship.
Trends Pharmacol Sci. 2011 May;32(5):265-9. doi: 10.1016/j.tips.2011.01.005. Epub 2011 Mar 1.
PMID: 21367464 [PubMed - indexed for MEDLINE]
2010 ~ Breast Cancer and CS/GPR55
“LPI and GPR55 play a role in the modulation of migration, orientation and polarization of breast cancer cells in response to the tumour microenvironment.”
A role for L-alpha-lysophosphatidylinositol and GPR55 in the modulation of migration, orientation and polarization of human breast cancer cells.
Ford LA, Roelofs AJ, Anavi-Goffer S, Mowat L, Simpson DG, Irving AJ, Rogers MJ, Rajnicek AM, Ross RA.
Br J Pharmacol. 2010 Jun;160(3):762-71. doi: 10.1111/j.1476-5381.2010.00743.x.
PMID: 20590578 [PubMed - indexed for MEDLINE] Free PMC Article
2006 ~ Evolution and CS/GPR55
“Within this limited number of twelve organisms, the endocannabinoid genes exhibited heterogeneous evolutionary trajectories, with functional orthologs limited to mammals (TRPV1 and GPR55), or vertebrates (CB2 and DAGLbeta), or chordates (MAGL and COX2), or animals (DAGLalpha and CB1-like receptors), or opisthokonta (animals and fungi, NAPE-PLD), or eukaryotes (FAAH).”
Evolutionary origins of the endocannabinoid system.
McPartland JM, Matias I, Di Marzo V, Glass M.
Gene. 2006 Mar 29;370:64-74. Epub 2006 Jan 23.
PMID: 16434153 [PubMed - indexed for MEDLINE]
~ posted by bwb