RT Journal Article
T1 CB1 and LPA1 Receptors Relationship in the Mouse Central Nervous System.
A1 Gonzalez-de-San-Roman, Estibaliz
A1 Manuel, Ivan
A1 Ledent, Catherine
A1 Chun, Jerold
A1 Rodriguez-de-Fonseca, Fernando
A1 Estivill-Torrus, Guillermo
A1 Santin, Luis Javier
A1 Rodriguez-Puertas, Rafael
K1 GPCR
K1 Autoradiography
K1 Brain
K1 Cannabinoids
K1 Imaging mass spectrometry
K1 Lysophosphatidic acid
K1 Neurolipids
K1 Área de Gestión Sanitaria Este de Málaga-Axarquía
AB Neurolipids are a class of bioactive lipids that are produced locally through specific biosynthetic pathways in response to extracellular stimuli. Neurolipids are important endogenous regulators of neural cell proliferation, differentiation, oxidative stress, inflammation and apoptosis. Endocannabinoids (eCBs) and lysophosphatidic acid (LPA) are examples of this type of molecule and are involved in neuroprotection. The present study analyzes a possible relationship of the main receptor subtypes for both neurolipid systems that are present in the central nervous system, the CB1 and LPA1 receptors, by using brain slices from CB1 KO mice and LPA1-null mice. Receptor-mediated G protein activation and glycerophospholipid regulation of potential precursors of their endogenous neurotransmitters were measured by two different in vitro imaging techniques, functional autoradiography and imaging mass spectrometry (IMS), respectively. Possible crosstalk between CB1 and LPA1 receptors was identified in specific areas of the brain, such as the amygdala, where LPA1 receptor activity is upregulated in CB1 KO mice. More evidence of an interaction between both systems was that the CB1-mediated activity was clearly increased in the prefrontal cortex and cerebellum of LPA1-null mice. The eCB system was specifically over-activated in regions where LPA1 has an important signaling role during embryonic development. The modifications on phospholipids (PLs) observed in these genetically modified mice by using the IMS technique indicated the regulation of some of the PL precursors of both LPA and eCBs in specific brain areas. For example, phosphatidylcholine (PC) (36:1) was detected as a potential LPA precursor, and phosphatidylethanolamine (PE) (40:6) and PE (p18:0/22:6) as potential eCB precursors. The absence of the main cerebral receptors for LPA or eCB systems is able to induce modulation on the other at the levels of both signaling and synthesis of endogenous neurotransmitters, indicating adaptive responses between both systems during prenatal and/or postnatal development.
PB Frontiers Research Foundation
SN 1662-5099
YR 2019
FD 2019-09-19
LK http://hdl.handle.net/10668/14700
UL http://hdl.handle.net/10668/14700
LA en
NO González de San Román E, Manuel I, Ledent C, Chun J, Rodríguez de Fonseca F, Estivill-Torrús G, et al. CB1 and LPA1 Receptors Relationship in the Mouse Central Nervous System. Front Mol Neurosci. 2019 Sep 19;12:223
NO This work was supported by the Departments of Industry and Education from the Basque Government KK-2017/14 Elkartek and IT975-16 Consolidated Research Group Grants. Technical and human support provided by the General Research Services SGIker [University of the Basque Country(UPV/EHU), Ministry of Economy and Competitiveness (MINECO), Basque Government, European Regional Development Fund (ERDF) and European Social Fund (ESF)] is gratefully acknowledged.
DS RISalud
RD Apr 5, 2025