Inhibition of cell-surface molecular GPR87 with GPR87-suppressing adenoviral vector disturb tumor proliferation in lung cancer cells

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URI http://shark.lib.kagawa-u.ac.jp/kuir/metadata/29002
Title
Inhibition of cell-surface molecular GPR87 with GPR87-suppressing adenoviral vector disturb tumor proliferation in lung cancer cells
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Description

Abstract

Background/aim: GPR87 is a member of the cell surface molecular G protein-coupled receptors (GPCR) family and suggested to contribute to the viability of human tumor cells. Its tumor-specific expression and cell surface location make it a potential molecule for targeted therapy. In the present study, we aimed to examine the effect of silencing GPR87 expression and explore the possibility of establishing gene therapy against GPR87-overexpressing lung cancer.

Materials and methods: Twenty malignant cell lines were investigated and GPR87-overexpressing H358 and PC9 lung cancer cells were subjected to inhibiting experiments. A short hairpin siRNA targeting the GPR87 gene was transformed into an adenoviral vector (Ad-shGPR87). Real-time RT-PCR and western blot analyses were performed to evaluate gene and protein expression. Tumors derived from human H358 cells were subcutaneously implanted in nude mice for in vivo experiments.

Results and conclusion: About 50% (10/20) malignant cells showed GPR87-overexpression, especially for lung cancer cells (70%, 7/10). Ad-shGPR87 effectively down-regulated the GPR87 expression, and significantly inhibited the cell proliferation in GPR87-overexpressing H358 and PC9 cells. Treatment with Ad-shGPR87 exerted a significant antitumor effect against the GPR87-expressing H358 xenografts. In addition, the gene expression of H3.3, a recently proved activator for GPR87 transcription, was positively correlated with GPR87 gene expression. Furthermore, a significant decrease of KRAS and c-Myc expression was observed in both cell lines after Ad-shGPR87 infection. In conclusion, GPR87 may play a critical role in cancer cell proliferation, and indicate its potential as a novel target for lung cancer treatment.

Keywords: GPR87; NSCLC; adenoviral vector;

cell surface marker; gene therapy; shRNA

(医博甲752)

Author
著者 喜田 裕介
著者(ヨミ) キタ ユウスケ
著者(別表記) Kita Yusuke
Publication Title
Anticancer Research
Publication Title Alternative
Anticancer Res.
Volume
40
Issue
2
Start Page
733
End Page
741
Publisher
International Institute of Anticancer Research
Published Date
2020-02
ISSN
0250-7005
NCID
AA10625860
PMID
32014915
DOI
10.21873/anticanres.14004
Resource Type
Thesis or Dissertation
Language
eng
Rights
Copyright© 2020, International Institute of Anticancer Research (Dr. George J. Delinasios)
"This is the Publisher's Version of the following article: Inhibition of cell-surface molecular GPR87 with GPR87-suppressing adenoviral vector disturb tumor proliferation in lung cancer cells; Anticancer Research;Volume 40 Number 2 (2020) Pages: 733-741; doi: 10.21873/anticanres.14004 , which has been published in final form at https://doi.org/10.21873/anticanres.14004 . "
The embargo period has expired.
Text Version
ETD
Grant ID
博甲第752号
Grant Date
2020-06-25
Degree Name
博士(医学)
Grantor
香川大学
Set
香川大学
Copyright (C) 2009 Kagawa University All rights reserved.