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DNA profiling by array comparative genomic hybridization (CGH) of peripheral blood mononuclear cells (PBMC) and tumor tissue cell in non-small cell lung cancer (NSCLC)

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Abstract

Lung tumor cell DNA copy number alteration (CNA) was expected to display specific patterns such as a large-scale amplification or deletion of chromosomal arms, as previously published data have reported. Peripheral blood mononuclear cell (PBMC) CNA however, was expected to show normal variations in cancer patients as well as healthy individuals, and has thus been used as normal control DNA samples in various published studies. We performed array CGH to measure and compare genetic changes in terms of the CNA of PBMC samples as well as DNA isolated from tumor tissue samples, obtained from 24 non-small cell lung cancer patients. Contradictory to expectations, our studies showed that the PBMC CNA also showed chromosomal variant regions. The list included well-known tumor-associated NTRK1, FGF8, TP53, and TGFβ1 genes and potentially novel oncogenes such as THPO (3q27.1), JMJD1B, and EGR1 (5q31.2), which was investigated in this study. The results of this study highlighted the connection between PBMC and tumor cell genomic DNA in lung cancer patients. However, the application of these studies to cancer prognosis may pose a challenge due to the large amount of information contained in genetic predisposition and family history that has to be processed for useful downstream clinical applications.

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Acknowledgments

This work was supported by Grant (01-PJ3-PG6-01GN07-0004), Good Health R&D Project, Ministry of Health Welfare, Republic of Korea and by a grant of the Korea Health 21 R&D Project, Ministry of Health Welfare, Republic of Korea, (00-PJ3-PG6-GN02-0002).

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Authors and Affiliations

  1. Catholic Neuroscience Center, The Catholic University, Seoul, Republic of Korea

    Seung-Ho Baik, Bo-Keun Jee, Jin-Soo Choi & Kweon-Haeng Lee

  2. Division of Pulmonary and Critical Care, Department of Medicine, College of Medicine, The Catholic University, Seoul, Republic of Korea

    Hyoung-Kyu Yoon

  3. Department of Internal Medicine, Anam Hospital, Korea University Medical Center, Seoul, Republic of Korea

    Yeul-Hong Kim

  4. Department of Occupational and Environmental Medicine, St. Mary’s Hospital, The Catholic University, Seoul, Republic of Korea

    Young Lim

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  1. Seung-Ho Baik
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Correspondence to Young Lim.

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Baik, SH., Jee, BK., Choi, JS. et al. DNA profiling by array comparative genomic hybridization (CGH) of peripheral blood mononuclear cells (PBMC) and tumor tissue cell in non-small cell lung cancer (NSCLC). Mol Biol Rep 36, 1767–1778 (2009). https://doi.org/10.1007/s11033-008-9380-7

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