1. Detection of differentially expressed HES-6 gene in metastatic colon carcinoma by combination of suppression subtractive hybridization and cDNA library array
- Author
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Duo Sun, Michelle L. Swearingen, Maureen Jeri Bourner, and Edward J. Weinstein
- Subjects
Cancer Research ,Pathology ,medicine.medical_specialty ,Lung Neoplasms ,Colorectal cancer ,Transplantation, Heterologous ,Mice, Nude ,Breast Neoplasms ,Biology ,Metastasis ,Mice ,Complementary DNA ,Gene expression ,medicine ,Basic Helix-Loop-Helix Transcription Factors ,Tumor Cells, Cultured ,Animals ,Humans ,Neoplasm Metastasis ,DNA Primers ,Gene Library ,Oligonucleotide Array Sequence Analysis ,Chromosome Aberrations ,Ovarian Neoplasms ,Base Sequence ,cDNA library ,Nucleic Acid Hybridization ,medicine.disease ,Reverse transcriptase ,Kidney Neoplasms ,Gene Expression Regulation, Neoplastic ,Repressor Proteins ,Oncology ,Suppression subtractive hybridization ,Colonic Neoplasms ,Cancer research ,Female ,DNA microarray ,Transcription Factors - Abstract
The molecular mechanisms involved in the progression of colon carcinomas from a primary to a metastatic tumor have been only partially elucidated and poorly understood. This study combines suppression subtractive hybridization and cDNA array hybridization to identify genes with expression differences between a primary human colon tumor cell line (HT29) and three isogenic lung tumor metastases. The positive clones isolated in this screen were further validated and quantitated with real-time reverse transcription polymerase chain reactions. HES-6 was identified as up-regulated in each of the individual tumor metastases, as well as in a panel of primary human tumors derived from the lung, breast and kidney. These findings demonstrate that it is possible to utilize longitudinal samples from an in vivo model of colon carcinoma to identify genes up-regulated in metastases and that HES-6 may be an important marker of a range of primary cancers as well as metastatic colon carcinoma.
- Published
- 2003