Genome-wide combination profiling of copy number and methylation offers an approach for deciphering misregulation and development in cancer cells.
Copy number changes and DNA methylation alterations are crucial to gene regulation in mammals. Recently, a number of microarray studies have been based on copy number and DNA methylation alterations in order to find clinical biomarkers of carcinogenesis. In this study, we attempted to combine profiles of copy number and methylation patterns in four human cancer cell lines using BAC microarray-based approaches and we detected several clinically important genes which showed genetic and epigenetic relationships. Within the clones analyzed, many contained cancer-related genes involved in cell cycle regulation, cell division, signal transduction, tumor necrosis, cell differentiation, and cell proliferation. One clone included the FHIT gene, a well-known tumor suppressor gene involved in various human cancers. Our combined profiling techniques may provide a method by which to find new clinicopathologic cancer biomarkers, and support the idea that systematic characterization of the genetic and epigenetic events in cancers may rapidly become a reality.
Park
Jung Jun
JJ
Macrogen Inc., World Meridian Venture Center, 60-24 Gasan-dong, Seoul, Republic of Korea.
Kang
Jae Ku
JK
Hong
Su
S
Ryu
Eun Sook
ES
Kim
Jong-Il
JI
Lee
Jong Ho
JH
Seo
Jeong-Sun
JS
D017766:Acid Anhydride Hydrolases / Q000235:genetics; D014408:Biomarkers, Tumor / Q000235:genetics*; D045744:Cell Line, Tumor; D002471:Cell Transformation, Neoplastic / Q000235:genetics*; D022202:Chromosomes, Artificial, Bacterial / Q000235:genetics; D019175:DNA Methylation; D020869:Gene Expression Profiling / Q000379:methods*; D015972:Gene Expression Regulation, Neoplastic; D052138:Genes, Neoplasm; D006801:Humans; D009363:Neoplasm Proteins / Q000235:genetics; D009369:Neoplasms / Q000235:genetics*; D020411:Oligonucleotide Array Sequence Analysis; D000099170:Bis(5'-adenosyl)triphosphatase
D017766:Acid Anhydride Hydrolases; D014408:Biomarkers, Tumor; D009363:Neoplasm Proteins; D000099170:Bis(5'-adenosyl)triphosphatase