Proton-sensing receptor involved in pH homeostasis. May represents an osteoblastic pH sensor regulating cell-mediated responses to acidosis in bone. Mediates its action by association with G proteins that stimulates inositol phosphate (IP) production or Ca(2+) mobilization. The receptor is almost silent at pH 7.8 but fully activated at pH 6.8. Also functions as a metastasis suppressor gene in prostate cancer.
Gene References into Functions
High GPR68 expression is associated with pancreatic ductal adenocarcinoma.PMID:29092903
different benzodiazepines exhibit a range of biases for OGR1, with sulazepam selectively activating the canonical Gs of the G protein signaling pathway, in heterologous expression systems, as well as in several primary cell types.PMID:29042451
Our results suggest that OGR1-dependent increases in TRPC4 expression may favour formation of highly Ca(2+) -permeable TRPC4-containing channels that promote transformed granule cell migration. Increased motility of cancer cells is a prerequisite for cancer invasion and metastasis, and our findings may point towards a key role for TRPC4 in progression of certain types of medullablastoma.PMID:28627017
Blocking of GPR68 or NF-small ka, CyrillicB activity severely attenuated acidification induced IL-8 production.PMID:27166427
These results suggest that zOGR1, but not GPR4, is also a metal-sensing G-protein-coupled receptor in addition to a proton-sensing G-protein-coupled receptor, although not all metals that activate hOGR1 activated zOGR1.PMID:28270026
data identify a role for GPR68 as a proton sensor that is required for proper enamel formationPMID:27693231
coexpression of OGR1- and G2A-enhanced proton sensitivity and proton-induced calcium signals. This alteration is attributed to oligomerization of OGR1 and G2A. The oligomeric potential locates receptors at a specific site, which leads to enhancedPMID:27049592
The deconstruction of OGR1-dependent signaling may aid our understanding of mucosal inflammation mechanismsPMID:26206859
Provide evidence for the roles of OGR1 and ASIC1a in the regulation of intestinal passive Mg(2+) absorption.PMID:24375028
the expression of OGR1 in myeloid-derived cells, especially in double positive cells, was required for prostate tumor cell-induced immunosuppression.PMID:23222714
The involvement of ovarian cancer G-protein-coupled receptor 1 in acidic extracellular environment may be an underlying mechanism responsible for bone pain in osteoporosis or bone metastasis without clinically proved fractures.PMID:22835475
OGR1 activation increased intracellular calcium in transfected HEK293 cells.PMID:22508039
It indicated that OGR1 may be a tumor suppressor gene for ovarian cancer.PMID:21740742
extracellular acidification induces CTGF production through the OGR1/G(q/11) protein and inositol-1,4,5-trisphosphate-induced Ca(2+) mobilization in human airway smooth muscle cells.PMID:21907704
acidic pH-induced vascular actions of aortic smooth muscle cells can be dissected to OGR1-dependent and -independent pathways: COX-2 expression, PGI(2) production, and MKP-1 expression are mediated by OGR1, but PAI-1 expression is not.PMID:20622109
ovarian cancer G-protein-coupled receptor 1 (OGR1), previously described as a receptor for sphingosylphosphorylcholine, acts as a proton-sensing receptor stimulating inositol phosphate formationPMID:12955148
OGR1 was found to evoke strong pH-dependent responses as measured by inositol phosphate accumulation.PMID:15665078
cAMP accumulation may occur through OGR1-mediated stimulation of the phospholipase C/cyclooxygenase/PGI(2) pathwayPMID:16087674
OGR1 is a novel metastasis suppressor gene for prostate cancer. OGR1's constitutive activity via G alpha(i) contributes to its inhibitory effect on cell migration in vitro.PMID:17728215
OGR1/G(q/11)/phospholipase C/protein kinase C pathway regulates osteoblastic COX-2 induction and subsequent PGE(2) production in response to acidic circumstancesPMID:18302504
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Subcellular Location
Cell membrane; Multi-pass membrane protein.
Protein Families
G-protein coupled receptor 1 family
Tissue Specificity
Found at low level in a wide range of tissues, but significantly expressed in lung, kidney, bone and nervous system.