Expression pattern of G protein-coupled receptor 30 in LacZ reporter mice.
Multiple reports implicated the function of G protein-coupled receptor (GPR)-30 with nongenomic effects of estrogen, suggesting that GPR30 might be a G-protein coupled estrogen receptor. However, the findings are controversial and the expression pattern of GPR30 on a cell type level as well as its function in vivo remains unclear. Therefore, the objective of this study was to identify cell types that express Gpr30 in vivo by analyzing a mutant mouse model that harbors a lacZ reporter (Gpr30-lacZ) in the Gpr30 locus leading to a partial deletion of the Gpr30 coding sequence. Using this strategy, we identified the following cell types expressing Gpr30: 1) an endothelial cell subpopulation in small arterial vessels of multiple tissues, 2) smooth muscle cells and pericytes in the brain, 3) gastric chief cells in the stomach, 4) neuronal subpopulations in the cortex as well as the polymorph layer of the dentate gyrus, 5) cell populations in the intermediate and anterior lobe of the pituitary gland, and 6) in the medulla of the adrenal gland. In further experiments, we aimed to decipher the function of Gpr30 by analyzing the phenotype of Gpr30-lacZ mice. The body weight as well as fat mass was unchanged in Gpr30-lacZ mice, even if fed with a high-fat diet. Flow cytometric analysis revealed lower frequencies of T cells in both sexes of Gpr30-lacZ mice. Within the T-cell cluster, the amount of CD62L-expressing cells was clearly reduced, suggesting an impaired production of T cells in the thymus of Gpr30-lacZ mice.
Isensee
Jörg
J
Center for Cardiovascular Research, Charité Universitätsmedizin Berlin, Berlin, Germany.
Meoli
Luca
L
Zazzu
Valeria
V
Nabzdyk
Christoph
C
Witt
Henning
H
Soewarto
Dian
D
Effertz
Karin
K
Fuchs
Helmut
H
Gailus-Durner
Valérie
V
Busch
Dirk
D
Adler
Thure
T
de Angelis
Martin Hrabé
MH
Irgang
Markus
M
Otto
Christiane
C
Noppinger
Patricia Ruiz
PR
D000818:Animals; D015139:Blotting, Southern; D015153:Blotting, Western; D001835:Body Weight / Q000187:drug effects; D004041:Dietary Fats / Q000008:administration & dosage / Q000494:pharmacology; D005260:Female; D005434:Flow Cytometry; D005838:Genotype; D006367:HeLa Cells; D006579:Heterozygote; D006801:Humans; D007150:Immunohistochemistry; D007763:Lac Operon / Q000235:genetics*; D008297:Male; D051379:Mice; D008817:Mice, Mutant Strains; D016133:Polymerase Chain Reaction; D011960:Receptors, Estrogen; D043562:Receptors, G-Protein-Coupled / Q000235:genetics* / Q000378:metabolism*; D001616:beta-Galactosidase / Q000235:genetics / Q000378:metabolism
D004041:Dietary Fats; C532507:GPER1 protein, mouse; D011960:Receptors, Estrogen; D043562:Receptors, G-Protein-Coupled; D001616:beta-Galactosidase