Suppression of ABHD2, identified through a functional genomics screen, causes anoikis resistance, chemoresistance and poor prognosis in ovarian cancer.
Published
Journal Article
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.
Full Text
Duke Authors
Cited Authors
- Yamanoi, K; Matsumura, N; Murphy, SK; Baba, T; Abiko, K; Hamanishi, J; Yamaguchi, K; Koshiyama, M; Konishi, I; Mandai, M
Published Date
- July 26, 2016
Published In
Volume / Issue
- 7 / 30
Start / End Page
- 47620 - 47636
PubMed ID
- 27323405
Pubmed Central ID
- 27323405
Electronic International Standard Serial Number (EISSN)
- 1949-2553
Digital Object Identifier (DOI)
- 10.18632/oncotarget.9951
Language
- eng
Conference Location
- United States