Lenabasum

Medical Marijuana in the treatment of Multiple Sclerosis.
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Petr75
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Lenabasum

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2021 Sep 20
Laboratory of Resolution of Neuroinflammation, IRCCS Santa Lucia Foundation, Rome, Italy
Potent T cell mediated anti-inflammatory role of the selective CB2 agonist lenabasum in multiple sclerosis
https://pubmed.ncbi.nlm.nih.gov/34543449/

Abstract

Background: Lenabasum is a synthetic cannabinoid receptor type-2 (CB2) agonist able to exert potent anti-inflammatory effects, but its role on T cells remains unknown.

Objectives: The present study was undertaken to investigate anti-inflammatory mechanisms of lenabasum in T lymphocyte subsets and its in vivo therapeutic efficacy in experimental autoimmune encephalomyelitis (EAE).

Methods: Mononuclear cells from 17 healthy subjects (HS) and 25 relapsing-remitting multiple sclerosis (RRMS) patients were activated in presence or absence of lenabasum and analysed by flow cytometry and qRT-PCR. EAE mice were treated with lenabasum and clinical score and neuroinflammation were evaluated.

Results: Lenabasum significantly reduced TNF-a production from CD4+ T cells and CD8+ T cells in a dose-dependent manner in both HS and RRMS patients. In MS patients, lenabasum also reduced activation marker CD25 and inhibited IL-2 production from both T cell subsets and IFN-γ and IL-17 from committed Th1 and Th17 cells, respectively. These effects were blocked by the pre-treatment with selective CB2 inverse agonist SR144528. In vivo treatment of EAE mice with lenabasum significantly ameliorated disease severity, reduced neuroinflammation and demyelination in spinal cord.

Conclusion: Lenabasum exerts potent T cell-mediated immunomodulatory effects, suggesting CB2 as a promising pharmacological target to counteract neuroinflammation in MS.
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