EFFECT OF ENDOCANNABINOID SIGNALLING ON CELL FATE: LIFE, DEATH, DIFFERENTIATION AND PROLIFERATION OF BRAIN CELLS.

Cell fate events are regulated by different endogenous developmental factors such as cell microenvironment, external or remote signals and epigenetic regulation. Among the many regulatory factors, endocannabinoid associated signalling pathways are known to lead several of these events in the developing nervous system and in the adult brain. Interestingly, endocannabinoids exert its modulatory actions in health and pathological conditions. Endocannabinoid signalling can promote cell survival acting on non-transformed brain cells (neurons, astrocytes or oligodendrocytes) while can either have a protumoural or antitumoural effect on transformed cells. Moreover, endocannabinoids are able to attenuate detrimental effects on neurogenesis and neuroinflammation associated with ageing. Thus, the endocannabinoid system emerges as an important regulator of cell fate to control cell survival/cell death decisions depending on the cell type and its environment.