Suppression of ABHD2, identified through a functional genomics screen, causes anoikis resistance, chemoresistance and poor prognosis in ovarian cancer

被引：25

作者：

Yamanoi, Koji ^{[1
]}

Matsumura, Noriomi ^{[1
]}

Murphy, Susan K. ^{[2
]}

Baba, Tsukasa ^{[1
]}

Abiko, Kaoru ^{[1
]}

Hamanishi, Junzo ^{[1
]}

Yamaguchi, Ken ^{[1
]}

Koshiyama, Masafumi ^{[1
]}

Konishi, Ikuo ^{[1
]}

Mandai, Masaki ^{[3
]}

机构：

[1] Kyoto Univ, Dept Gynecol & Obstet, Grad Sch Med, Kyoto, Japan

[2] Duke Univ, Med Ctr, Dept Obstet & Gynecol, Div Gynecol Oncol, Durham, NC 27710 USA

[3] Kinki Univ, Dept Obstet & Gynecol, Fac Med, Osaka, Japan

来源：

ONCOTARGET | 2016年 / 7卷 / 30期

关键词：

ovarian cancer; anoikis resistance; functional genomics screen; shRNA library; TUMOR PROGRESSION; MICE LACKING; CELLS; VULNERABILITIES; TUMORIGENICITY; ACTIVATION; EXPRESSION; PD-L1;

D O I：

10.18632/oncotarget.9951

中图分类号：

R73 [肿瘤学];

学科分类号：

100214 ;

摘要：

Anoikis resistance is a hallmark of cancer, and relates to malignant phenotypes, including chemoresistance, cancer stem like phenotypes and dissemination. The aim of this study was to identify key factors contributing to anoikis resistance in ovarian cancer using a functional genomics screen. A library of 81 000 shRNAs targeting 15 000 genes was transduced into OVCA420 cells, followed by incubation in soft agar and colony selection. We found shRNAs directed to ABHD2, ELAC2 and CYB5R3 caused reproducible anoikis resistance. These three genes are deleted in many serous ovarian cancers according to The Cancer Genome Atlas data. Suppression of ABHD2 in OVCA420 cells increased phosphorylated p38 and ERK, platinum resistance, and side population cells (p<0.01, respectively). Conversely, overexpression of ABHD2 decreased resistance to anoikis (p<0.05) and the amount of phosphorylated p38 and ERK in OVCA420 and SKOV3 cells. In clinical serous ovarian cancer specimens, low expression of ABHD2 was associated with platinum resistance and poor prognosis (p<0.05, respectively). In conclusion, we found three novel genes relevant to anoikis resistance in ovarian cancer using a functional genomics screen. Suppression of ABHD2 may promote a malignant phenotype and poor prognosis for women with serous ovarian cancer.

引用

页码：47620 / 47636

页数：17

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