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2017 ; 10
(1
): 541
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
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[Oct]; 10
(1
): 541
PMID29084601
show 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.
|Animals
[MESH]
|Cell Line, Tumor
[MESH]
|GTP-Binding Protein beta Subunits/*metabolism
[MESH]
|GTP-Binding Protein gamma Subunits/*metabolism
[MESH]