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Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 BMC+Res+Notes 2017 ; 10 (ä): ä Nephropedia Template TP
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Gallein, a G?? subunit signalling inhibitor, inhibits metastatic spread of tumour cells expressing OR51E2 and exposed to its odorant ligand #MMPMID29084601
Sanz G; Leray I; Muscat A; Acquistapace A; Cui T; Rivière J; Vincent-Naulleau S; Giandomenico V; Mir LM
BMC Res Notes 2017[]; 10 (ä): ä PMID29084601show ga
Objective: We previously reported that the olfactory receptor OR51E2, overexpressed in LNCaP prostate cancer cells, promotes cell invasiveness upon stimulation of its agonist ?-ionone, and this phenomenon increases metastatic spread. Furthermore, we showed that the induced cell invasiveness involves a PI3 kinase dependent signalling pathway. We report here the results of a new investigation to address whether gallein, a small inhibitor of G protein ?? subunit interaction with PI3 kinase, can inhibit ?-ionone effects both in vitro and in vivo. Results: We demonstrate that gallein can inhibit the ?-ionone-induced cell invasiveness in vitro, as well as the spread of metastases in vivo. LNCaP cell invasiveness, assessed using spheroid cultures in collagen gels in vitro, was increased by ?-ionone and the effect was reversed by co-administration of gallein. LNCaP tumour cells, subcutaneously inoculated to immunodeficient mice, generated more metastases in vivo when ?-ionone was applied through the skin. Furthermore, the intraperitoneal injection of gallein inhibited this increased metastasis spread. Our results thus support the role of OR51E2 in the ?-ionone observed effects, and suggest that gallein could be a potential new agent in personalized medicine of the tumours expressing OR51E2. Electronic supplementary material: The online version of this article (10.1186/s13104-017-2879-z) contains supplementary material, which is available to authorized users.