TY - JOUR
T1 - Modeling of lung cancer by an orthotopically growing H460SM variant cell line reveals novel candidate genes for systemic metastasis
AU - Liu, Jiang
AU - Blackball, Fiona
AU - Seiden-Long, Isolde
AU - Jurisica, Igor
AU - Navab, Roya
AU - Liu, Ni
AU - Radulovich, Nikolina
AU - Wigle, Dennis
AU - Sultan, Muhajid
AU - Hu, Jim
AU - Tsao, Ming Sound
AU - Johnston, Michael R.
N1 - Funding Information:
This work is supported by grants from the Canadian Cancer Society (NCIC Grant #012150), National Science and Engineering Research Council (RGPIN 203833-02) and the Institute for Robotics and Intelligence Systems. Dr Blackhall was supported by an unrestricted educational fellowship from Aventis Pharma Inc. (Laval, Quebec, Canada). Dr Tsao is the M Qasim Choksi Chair in Lung Cancer Translational Research. We are grateful to Dr Frances Shepherd for her continuing support in this project. We also thank Dr Squire and the Oncologic Molecular Micro-imaging Clinical Research
PY - 2004/8/19
Y1 - 2004/8/19
N2 - Endobronchial implantation of NCI-H460 cells into the nude rat generates a primary lung tumor with mediastinal lymph node spread, but rarely systemic metastases. We isolated tumor cells from mediastinal nodes, orthotopically reimplanted the cells into nude rats and repeated this four times to derive a cell line, designated H460SM, that spontaneously metastasizes to bone, kidney, brain, soft tissue and contralateral lung. H460SM cells demonstrated higher invasive activity in vitro than parental NCI-H460 cells. Spectral karyotyping revealed a new inversion within 17q and loss of an extra normal copy of chromosome 14 present in parental NCI-H460 cells. Expression profiling of orthotopic primary tumors revealed differential expression of 360 genes. Of these, 173 were represented in the probe set of a 19.2K OCI cDNA microarray previously used to profile the gene expression of surgically resected lung cancer specimens. We have computationally validated clinical importance of these genes by using in silico analysis of 18 cases of pulmonary adenocarcinoma, which were split into two patient groups with markedly different clinical outcome. The model identifies additional novel candidate genes for the progression of lung cancer to systemic metastases and poor prognosis.
AB - Endobronchial implantation of NCI-H460 cells into the nude rat generates a primary lung tumor with mediastinal lymph node spread, but rarely systemic metastases. We isolated tumor cells from mediastinal nodes, orthotopically reimplanted the cells into nude rats and repeated this four times to derive a cell line, designated H460SM, that spontaneously metastasizes to bone, kidney, brain, soft tissue and contralateral lung. H460SM cells demonstrated higher invasive activity in vitro than parental NCI-H460 cells. Spectral karyotyping revealed a new inversion within 17q and loss of an extra normal copy of chromosome 14 present in parental NCI-H460 cells. Expression profiling of orthotopic primary tumors revealed differential expression of 360 genes. Of these, 173 were represented in the probe set of a 19.2K OCI cDNA microarray previously used to profile the gene expression of surgically resected lung cancer specimens. We have computationally validated clinical importance of these genes by using in silico analysis of 18 cases of pulmonary adenocarcinoma, which were split into two patient groups with markedly different clinical outcome. The model identifies additional novel candidate genes for the progression of lung cancer to systemic metastases and poor prognosis.
KW - Expression profiling
KW - Lung cancer
KW - Metastatic model
KW - Orthotopic model
KW - Prognostic marker
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U2 - 10.1038/sj.onc.1207795
DO - 10.1038/sj.onc.1207795
M3 - Article
C2 - 15247903
AN - SCOPUS:3442890759
SN - 0950-9232
VL - 23
SP - 6316
EP - 6324
JO - Oncogene
JF - Oncogene
IS - 37
ER -