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Phytocannabinoids promote viability and functional adipogenesis of bone marrow-derived mesenchymal stem cells through different molecular targets.

Tariq G. Fellous,Fabrizia De Maio,Hilal Kalkan,Biagio Carannante,S. Boccella,S. Petrosino,S. Maione,V. Di Marzo,F. Iannotti

Published 2020 in Biochemical Pharmacology

ABSTRACT

The cellular microenvironment plays a critical role in the maintenance of bone marrow-derived mesenchymal stem cells (BM-MSCs) and their subsequent cell lineage differentiation. Recent studies suggested that individuals with adipocyte-related metabolic disorders have altered function and adipogenic potential of adipose stem cell subpopulations, primarily BM-MSCs, increasing the risk of heart attack, stroke or diabetes. In this study, we explored the potential therapeutic effect of some of the most abundant non-euphoric compounds derived from the Cannabis sativa plant (or phytocannabinoids) including tetrahydrocannabivarin (THCV), cannabidiol (CBD), cannabigerol (CBG), cannabidiolic acid (CBDA) and cannabigerolic acid (CBGA), by analysing their pharmacological activity on the viability of endogenous BM-MSCs as well as their ability to alter BM-MSC proliferation and differentiation into mature adipocytes. We provide evidence that CBD, CBDA, CBGA and THCV (5 µM) increase the number of viable BM-MSCs; whereas only CBG (5 µM) and CBD (5 µM) alone or in their combination promote their maturation into adipocytes via distinct molecular mechanisms. These effects were revealed both in vitro and in vivo. In addition, phytocannabinoids prevented the insulin signalling impairment induced by palmitate in adipocytes differentiated from BM-MSCs. Our study highlights phytocannabinoids as a potential novel pharmacological tool to regain control of functional adipose tissue in unregulated energy homeostasis often occurring in metabolic disorders including type 2 diabetes mellitus (T2DM), aging and lipodystrophy.

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