The Endocannabinoid System Alleviates Pain in a Murine Model of Cancer-Induced Bone Pain.

Journal of Pharmacology and Experimental Therapeutics: 372 (3)“Metastatic breast cancer is prevalent worldwide, and one of the most common sites of metastasis are long bones. Of patients with disease, the major symptom is pain, yet current medications fail to adequately result in analgesic efficacy and present major undesirable adverse effects.

In our study we investigate the potential of a novel monoacylglycerol lipase (MAGL) inhibitor, MJN110, in a murine model of cancer induced bone pain (CIBP). Literature has previously demonstrated that MAGL inhibitors function to increase the endogenous concentrations of 2-arachydonylglycerol, which then activate CB1 and CB2 receptors inhibiting inflammation and pain.

Together, these data support the application for MJN110 as a novel therapeutic for cancer induced bone pain.

SIGNIFICANCE STATEMENT: Current standard of care for metastatic breast cancer pain is opioid-based therapies with adjunctive chemotherapy, which have highly addictive and other deleterious side effects. The need for effective, non-opioid based therapies is essential and harnessing the endogenous cannabinoid system is proving to be a new target to treat various types of pain conditions. We present a novel drug targeting the endogenous cannabinoid system that is effective at reducing pain in a mouse model of metastatic breast cancer to bone.”

https://www.ncbi.nlm.nih.gov/pubmed/32054717

http://jpet.aspetjournals.org/content/early/2020/02/13/jpet.119.262337

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