Correlation of K-ras codon 12 mutations in human feces and ages of patients with colorectal cancer (CRC)
| Autor: | Ruey Neng Yang, Chia Long Lee, Shung Haur Yang, Chi Jung Huang, Chen Chiung Liu, Chih Cheng Chien, Shu Hung Chen |
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| Rok vydání: | 2007 |
| Předmět: |
Adult
Male Colon Colorectal cancer government.form_of_government Biology medicine.disease_cause Feces Physiology (medical) Biomarkers Tumor medicine Humans Point Mutation Genetic Testing RNA Messenger Intestinal Mucosa Gene Aged Aged 80 and over Antisense therapy Human feces Biochemistry (medical) Rectum Public Health Environmental and Occupational Health General Medicine Middle Aged medicine.disease Molecular biology Genes ras Real-time polymerase chain reaction government Female Restriction fragment length polymorphism Colorectal Neoplasms Carcinogenesis Polymorphism Restriction Fragment Length |
| Zdroj: | Translational Research. 149:96-102 |
| ISSN: | 1931-5244 |
| Popis: | Colorectal cancer (CRC) is the predominant gastrointestinal malignancy and constitutes a major medical and economic burden worldwide. A thorough understanding of the oncogenes or genes related to tumorigenesis is the key to developing successful therapeutic strategies. Molecular analysis of feces constitutes a potentially potent and noninvasive method for detection of CRC. Using nested reverse transcription-polymerase chain reaction (RT-PCR) and amplified restriction fragment length polymorphism analysis, sloughed cells from the entire length of the colon and rectum were analyzed for expression of activating K-ras codon 12 mutants, which are becoming attractive targets for antisense treatment. K-ras codon 12 mutant sequences were detected in feces of 5% (1/20) of healthy controls, in feces of 41% (12/29) of CRC patients, in 10% (3/29) of isolates of tissue complementary DNA (cDNA), and in 14% (4/29) of isolates of genomic DNA. Age of patient was significantly associated with K-ras codon 12 sequences in feces: Patients with wild-type K-ras codon 12 sequences were significantly younger than those with mutated forms of K-ras codon 12. Fecal ribonucleic acid (RNA) analysis was demonstrated to be a useful for diagnosis of CRC. This technique may be suitable for screening and determinatign the clinical significance of active mutations of the K-ras gene in feces and would possibly be useful for identificating patients that would benefit from antisense therapy. |
| Databáze: | OpenAIRE |
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