Unknown

Dataset Information

0

The effects of (-)-epicatechin on endothelial cells involve the G protein-coupled estrogen receptor (GPER).


ABSTRACT: We have provided evidence that the stimulatory effects of (-)-epicatechin ((-)-EPI) on endothelial cell nitric oxide (NO) production may involve the participation of a cell-surface receptor. Thus far, such entity(ies) has not been fully elucidated. The G protein-coupled estrogen receptor (GPER) is a cell-surface receptor that has been linked to protective effects on the cardiovascular system and activation of intracellular signaling pathways (including NO production) similar to those reported with (-)-EPI. In bovine coronary artery endothelial cells (BCAEC) by the use of confocal imaging, we evidence the presence of GPER at the cell-surface and on F-actin filaments. Using in silico studies we document the favorable binding mode between (-)-EPI and GPER. Such binding is comparable to that of the GPER agonist, G1. By the use of selective blockers, we demonstrate that the activation of ERK 1/2 and CaMKII by (-)-EPI is dependent on the GPER/c-SRC/EGFR axis mimicking those effects noted with G1. We also evidence by the use of siRNA the role that GPER has on mediating ERK1/2 activation by (-)-EPI. GPER appears to be coupled to a non G?i/o or G?s, protein subtype. To extrapolate our findings to an ex vivo model, we employed phenylephrine pre-contracted aortic rings evidencing that (-)-EPI can mediate vasodilation through GPER activation. In conclusion, we provide evidence that suggests the GPER as a potential mediator of (-)-EPI effects and highlights the important role that GPER may have on cardiovascular system protection.

SUBMITTER: Moreno-Ulloa A 

PROVIDER: S-EPMC4555879 | biostudies-literature | 2015 Oct

REPOSITORIES: biostudies-literature

altmetric image

Publications

The effects of (-)-epicatechin on endothelial cells involve the G protein-coupled estrogen receptor (GPER).

Moreno-Ulloa Aldo A   Mendez-Luna David D   Beltran-Partida Ernesto E   Castillo Carmen C   Guevara Gustavo G   Ramirez-Sanchez Israel I   Correa-Basurto José J   Ceballos Guillermo G   Villarreal Francisco F  

Pharmacological research 20150821


We have provided evidence that the stimulatory effects of (-)-epicatechin ((-)-EPI) on endothelial cell nitric oxide (NO) production may involve the participation of a cell-surface receptor. Thus far, such entity(ies) has not been fully elucidated. The G protein-coupled estrogen receptor (GPER) is a cell-surface receptor that has been linked to protective effects on the cardiovascular system and activation of intracellular signaling pathways (including NO production) similar to those reported wi  ...[more]

Similar Datasets

| S-EPMC6151279 | biostudies-literature
| S-EPMC3557142 | biostudies-literature
| S-EPMC5716468 | biostudies-literature
| S-EPMC5817025 | biostudies-literature
2016-09-13 | GSE86843 | GEO
| S-EPMC9786783 | biostudies-literature
| S-EPMC8866881 | biostudies-literature
| S-EPMC3266468 | biostudies-literature
| S-EPMC5809192 | biostudies-literature
| S-EPMC3739730 | biostudies-literature