Novel marker of colon cancer
A research article to be published on October 14, 2008 in the World Journal of Gastroenterology addresses this question. In this research, by using the combined methods of laser microdissection (LMD), P27-based RNA amplification, and polypeptide, They evaluated differentially expressed genes between early carcinoma and lymph node metastatic patients.
Moreover, They further identified four differentially expressed genes in the progression of colon cancer in another group of 15 patients by means of semiquantitative reverse transcribed polymerase chain.
Their result indicated that the five gene expressions were changed in colon carcinoma cells compared with that of controls. Of the five genes, three genes were downregulated and two were upregulated in invasive submucosal colon carcinoma compared with non-invasive cases. The results were confirmed at the level of RNA and gene expression.
Five genes were further identified as differentially expressed genes in the majority of cases (> 50%, 25/40) in progression of colon cancer, and their expression patterns of which were similar to tumor suppressor genes or oncogenes. These results not only reveal the differentially expressed genes in progression of colon cancer, but also provide information that may prove useful for identifying novel diagnostic and therapeutic targets.
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