title: Identification of a long non-coding RNA gene, growth hormone secretagogue receptor opposite strand, which stimulates cell migration in non-small cell lung cancer cell lines.
abstract: The molecular mechanisms involved in non‑small cell lung cancer tumourigenesis are largely unknown; however, recent studies have suggested that long non-coding RNAs (lncRNAs) are likely to play a role. In this study, we used public databases to identify an mRNA-like, candidate long non-coding RNA, GHSROS (GHSR opposite strand), transcribed from the antisense strand of the ghrelin receptor gene, growth hormone secretagogue receptor (GHSR). Quantitative real-time RT-PCR revealed higher expression of GHSROS in lung cancer tissue compared to adjacent, non-tumour lung tissue. In common with many long non-coding RNAs, GHSROS is 5' capped and 3' polyadenylated (mRNA-like), lacks an extensive open reading frame and harbours a transposable element. Engineered overexpression of GHSROS stimulated cell migration in the A549 and NCI-H1299 non-small cell lung cancer cell lines, but suppressed cell migration in the Beas-2B normal lung-derived bronchoepithelial cell line. This suggests that GHSROS function may be dependent on the oncogenic context. The identification of GHSROS, which is expressed in lung cancer and stimulates cell migration in lung cancer cell lines, contributes to the growing number of non-coding RNAs that play a role in the regulation of tumourigenesis and metastatic cancer progression.
authors.affiliation: Ghrelin Research Group, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, Australia.
authors.forename: Eliza J
authors.initials: EJ
authors.lastname: Whiteside
authors.forename: Inge
authors.initials: I
authors.lastname: Seim
authors.forename: Jana P
authors.initials: JP
authors.lastname: Pauli
authors.forename: Angela J
authors.initials: AJ
authors.lastname: O'Keeffe
authors.forename: Patrick B
authors.initials: PB
authors.lastname: Thomas
authors.forename: Shea L
authors.initials: SL
authors.lastname: Carter
authors.forename: Carina M
authors.initials: CM
authors.lastname: Walpole
authors.forename: Jenny N T
authors.initials: JN
authors.lastname: Fung
authors.forename: Peter
authors.initials: P
authors.lastname: Josh
authors.forename: Adrian C
authors.initials: AC
authors.lastname: Herington
authors.forename: Lisa K
authors.initials: LK
authors.lastname: Chopin
mesh_terms: D001483:Base Sequence; D063646:Carcinogenesis / Q000235:genetics; D002289:Carcinoma, Non-Small-Cell Lung / Q000235:genetics / Q000473:pathology*; D045744:Cell Line, Tumor; D002465:Cell Movement / Q000235:genetics; D049109:Cell Proliferation; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D008175:Lung Neoplasms / Q000235:genetics / Q000473:pathology*; D009362:Neoplasm Metastasis; D062085:RNA, Long Noncoding / Q000235:genetics*; D054440:Receptors, Ghrelin / Q000235:genetics*; D017422:Sequence Analysis, DNA; D014162:Transfection
chemical_list: D062085:RNA, Long Noncoding; D054440:Receptors, Ghrelin