The long non-coding RNA GHSROS facilitates breast cancer cell migration and orthotopic xenograft tumour growth

Thomas, Patrick B. and Seim, Inge and Jeffery, Penny L. and Gahete, Manuel D. and Maugham, Michelle and Crisp, Gabrielle J. and Stacey, Andrew and Shah, Esha T. and Walpole, Carina and Whiteside, Eliza J. and Nelson, Colleen C. and Herington, Adrian C. and Luque, Raul M. and Veedu, Rakesh N. and Chopin, Lisa K. (2019) The long non-coding RNA GHSROS facilitates breast cancer cell migration and orthotopic xenograft tumour growth. International Journal of Oncology, 55 (6). pp. 1223-1236. ISSN 1019-6439

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Abstract

Recent evidence suggests that numerous long non-coding RNAs (lncRNAs) are dysregulated in cancer, and have critical roles in tumour development and progression. The present study investigated the ghrelin receptor antisense lncRNA growth hormone secretagogue receptor opposite strand (GHSROS) in breast cancer. Reverse transcription quantitative polymerase chain reaction revealed that GHSROS expression was significantly upregulated in breast tumour tissues compared with normal breast tissue. Induced overexpression of GHSROS in the MDA-MB-231 breast cancer cell line significantly increased cell migration in vitro, without affecting cell proliferation, a finding similar to our previous study on lung cancer cell lines. Microarray analysis revealed a significant repression of a small cluster of major histocompatibility class II genes and enrichment of immune response pathways; this phenomenon may allow tumour cells to better evade the immune system. Ectopic overexpression of GHSROS in the MDA-MB-231 cell line significantly increased orthotopic xenograft growth in mice, suggesting that in vitro culture does not fully capture the function of this lncRNA. This study demonstrated that GHSROS may serve a relevant role in breast cancer. Further studies are warranted to explore the function and therapeutic potential of this lncRNA in breast cancer progression.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Health and Wellbeing (1 Jan 2015 -)
Faculty/School / Institute/Centre: Historic - Institute for Resilient Regions - Centre for Health, Informatics and Economic Research (1 Aug 2018 - 31 Mar 2020)
Date Deposited: 29 Jan 2020 03:32
Last Modified: 29 Jan 2020 22:53
Uncontrolled Keywords: long non-coding RNA; ghrelin receptor gene; antisense transcript; breast cancer; cell migration; tumour growth
Fields of Research (2008): 11 Medical and Health Sciences > 1112 Oncology and Carcinogenesis > 111201 Cancer Cell Biology
11 Medical and Health Sciences > 1112 Oncology and Carcinogenesis > 111207 Molecular Targets
Identification Number or DOI: 10.3892/ijo.2019.4891
URI: http://eprints.usq.edu.au/id/eprint/37514

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