PMID- 32824740 OWN - NLM STAT- MEDLINE DCOM- 20210614 LR - 20210614 IS - 2218-273X (Electronic) IS - 2218-273X (Linking) VI - 10 IP - 8 DP - 2020 Aug 18 TI - CB2 Receptors and Neuron-Glia Interactions Modulate Neurotoxicity Generated by MAGL Inhibition. LID - 10.3390/biom10081198 [doi] LID - 1198 AB - Monoacylglycerol lipase inhibition (MAGL) has emerged as an interesting therapeutic target for neurodegenerative disease treatment due to its ability to modulate the endocannabinoid system and to prevent the production of proinflammatory mediators. To obtain a beneficial response, it is necessary to understand how this inhibition affects the neuron-glia crosstalk and neuron viability. In this study, the effect of MAGL inhibition by KML29 was evaluated in two types of rat cortical primary cultures; mixed cultures, including neuron and glial cells, and neuron-enriched cultures. The risk of neuronal death was estimated by longitudinal survival analysis. The spontaneous neuronal risk of death in culture was higher in the absence of glial cells, a process that was enhanced by KML29 addition. In contrast, neuronal survival was not compromised by MAGL inhibition in the presence of glial cells. Blockade of cannabinoid type 2 (CB2) receptors expressed mainly by microglial cells did not affect the spontaneous neuronal death risk but decreased neuronal survival when KML29 was added. Modulation of cannabinoid type 1 (CB1) receptors did not affect neuronal survival. Our results show that neuron-glia interactions are essential for neuronal survival. CB2 receptors play a key role in these protective interactions when neurons are exposed to toxic conditions. FAU - Rojo-Bustamante, Estefania AU - Rojo-Bustamante E AUID- ORCID: 0000-0003-3374-5458 AD - Facultad de Ciencias, Departamento de Bioquimica y Genetica, Universidad de Navarra, 31008 Pamplona, Spain. FAU - Inigo-Marco, Ignacio AU - Inigo-Marco I AD - CIMA, Programa de Neurociencias, Universidad de Navarra, 31008 Pamplona, Spain. FAU - Abellanas, Miguel Angel AU - Abellanas MA AD - Facultad de Ciencias, Departamento de Bioquimica y Genetica, Universidad de Navarra, 31008 Pamplona, Spain. FAU - Vinueza-Gavilanes, Rodrigo AU - Vinueza-Gavilanes R AD - CIMA, Programa de Neurociencias, Universidad de Navarra, 31008 Pamplona, Spain. FAU - Baltanas, Ana AU - Baltanas A AD - CIMA, Programa de Neurociencias, Universidad de Navarra, 31008 Pamplona, Spain. FAU - Luquin, Esther AU - Luquin E AUID- ORCID: 0000-0002-9694-2953 AD - Facultad de Medicina, Departamento de Patologia, Anatomia y Fisiologia, Universidad de Navarra, 31008 Pamplona, Spain. FAU - Arrasate, Montserrat AU - Arrasate M AD - CIMA, Programa de Neurociencias, Universidad de Navarra, 31008 Pamplona, Spain. AD - Facultad de Medicina, Departamento de Patologia, Anatomia y Fisiologia, Universidad de Navarra, 31008 Pamplona, Spain. AD - IdiSNA, Instituto de Investigacion Sanitaria de Navarra, 31008 Pamplona, Spain. FAU - Aymerich, Maria S AU - Aymerich MS AD - Facultad de Ciencias, Departamento de Bioquimica y Genetica, Universidad de Navarra, 31008 Pamplona, Spain. AD - CIMA, Programa de Neurociencias, Universidad de Navarra, 31008 Pamplona, Spain. AD - IdiSNA, Instituto de Investigacion Sanitaria de Navarra, 31008 Pamplona, Spain. LA - eng GR - PI17/01931/Instituto de Salud Carlos III/International GR - BFU2017-90043-P/Ministerio de Ciencia, Innovacion y Universidades/International PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200818 PL - Switzerland TA - Biomolecules JT - Biomolecules JID - 101596414 RN - 0 (1,1,1,3,3,3-hexafluoropropan-2-yl 4-(bis(benzo(d)(1,3)dioxol-5-yl)(hydroxy)methyl)piperidine-1-carboxylate) RN - 0 (Benzodioxoles) RN - 0 (Cnr2 protein, rat) RN - 0 (Piperidines) RN - 0 (Receptor, Cannabinoid, CB2) RN - EC 3.1.1.23 (Monoacylglycerol Lipases) SB - IM MH - Animals MH - Benzodioxoles/*adverse effects MH - Cell Communication MH - Cell Survival/drug effects MH - Cells, Cultured MH - Coculture Techniques MH - Monoacylglycerol Lipases/antagonists & inhibitors MH - Neuroglia/*cytology/drug effects/metabolism MH - Neurons/*cytology/drug effects/metabolism MH - Piperidines/*adverse effects MH - Primary Cell Culture MH - Rats MH - Receptor, Cannabinoid, CB2/*metabolism PMC - PMC7464766 OTO - NOTNLM OT - CB2 receptors OT - KML29 OT - endocannabinoid system OT - microglia OT - monoacylglycerol lipase OT - neuroprotection COIS- The authors declare no conflict of interest. EDAT- 2020/08/23 06:00 MHDA- 2021/06/16 06:00 PMCR- 2020/08/01 CRDT- 2020/08/23 06:00 PHST- 2020/06/30 00:00 [received] PHST- 2020/07/30 00:00 [revised] PHST- 2020/08/12 00:00 [accepted] PHST- 2020/08/23 06:00 [entrez] PHST- 2020/08/23 06:00 [pubmed] PHST- 2021/06/16 06:00 [medline] PHST- 2020/08/01 00:00 [pmc-release] AID - biom10081198 [pii] AID - biomolecules-10-01198 [pii] AID - 10.3390/biom10081198 [doi] PST - epublish SO - Biomolecules. 2020 Aug 18;10(8):1198. doi: 10.3390/biom10081198.