title: Expression of the receptor for hyaluronic acid mediated motility (RHAMM) is associated with poor prognosis and metastasis in non-small cell lung carcinoma.
abstract: The receptor for hyaluronic acid-mediated motility (RHAMM) is upregulated in various cancers, but its role in primary and metastatic non-small cell lung carcinoma (NSCLC) remains to be determined. Here, we investigate the clinical relevance of RHAMM expression in NSCLC. RHAMM protein expression correlates with histological differentiation stages and extent of the primary tumor (T stages) in 156 patients with primary NSCLC. Importantly, while focal RHAMM staining pattern is present in 57% of primary NSCLC, intense RHAMM protein expression is present in 96% of metastatic NSCLC cases. In a publicly available database, The Cancer Genome Atlas (TCGA), RHAMM mRNA expression is 12- and 10-fold higher in lung adenocarcinoma and squamous lung carcinoma than in matched normal lung tissues, respectively. RHAMM mRNA expression correlates with stages of differentiation and inferior survival in more than 400 cases of lung adenocarcinoma in the Director's Challenge cohort. Of 4 RHAMM splice variants, RHAMMv3 (also known as RHAMMB) is the dominant variant in NSCLC. Moreover, shRNA-mediated knockdown of RHAMM reduced the migratory ability of two lung adenocarcinoma cell lines, H1975 and H3255. Taken together, RHAMM, most likely RHAMMv3 (RHAMMB), can serve as a prognostic factor for lung adenocarcinomas and a potential therapeutic target in NSCLC to inhibit tumor migration.
authors.affiliation: Laboratory of Cellular Oncology, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA.
authors.forename: Dunrui
authors.initials: D
authors.lastname: Wang
authors.affiliation: Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY 10065, USA.
authors.forename: Navneet
authors.initials: N
authors.lastname: Narula
authors.affiliation: Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY 10065, USA.
authors.forename: Stephanie
authors.initials: S
authors.lastname: Azzopardi
authors.affiliation: Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.
authors.forename: Roger S
authors.initials: RS
authors.lastname: Smith
authors.affiliation: Department of Cardiothoracic Surgery, Weill Cornell Medicine, New York, NY 10065, USA.
authors.forename: Abu
authors.initials: A
authors.lastname: Nasar
authors.affiliation: Department of Cardiothoracic Surgery, Weill Cornell Medicine, New York, NY 10065, USA.
authors.forename: Nasser K
authors.initials: NK
authors.lastname: Altorki
authors.affiliation: Department of Cardiothoracic Surgery, Weill Cornell Medicine, New York, NY 10065, USA.
authors.forename: Vivek
authors.initials: V
authors.lastname: Mittal
authors.affiliation: Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.
authors.forename: Romel
authors.initials: R
authors.lastname: Somwar
authors.affiliation: Department of Cardiothoracic Surgery, Weill Cornell Medicine, New York, NY 10065, USA.
authors.forename: Brendon M
authors.initials: BM
authors.lastname: Stiles
authors.affiliation: Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY 10065, USA.
authors.forename: Yi-Chieh Nancy
authors.initials: YN
authors.lastname: Du
mesh_terms: D000368:Aged; D002289:Carcinoma, Non-Small-Cell Lung / Q000378:metabolism*; D002454:Cell Differentiation; D002465:Cell Movement; D015331:Cohort Studies; D019295:Computational Biology; D016326:Extracellular Matrix Proteins / Q000378:metabolism*; D005260:Female; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D018960:Hyaluronan Receptors / Q000378:metabolism*; D007150:Immunohistochemistry; D008175:Lung Neoplasms / Q000378:metabolism*; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D034741:RNA, Small Interfering / Q000378:metabolism; D046888:Tissue Array Analysis; D016896:Treatment Outcome
chemical_list: D016326:Extracellular Matrix Proteins; D018960:Hyaluronan Receptors; D034741:RNA, Small Interfering; C098946:hyaluronan-mediated motility receptor
keywords: lung cancer; metastasis; prognosis; receptor for hyaluronic acid-mediated motility