Pancreatic cancer has one of the poorest prognoses among malignant diseases. To understand its molecular mechanisms, we studied allelic losses on the long arm of chromosome 6. Using 55 paired DNAs of tumors and their corresponding normal tissues and 30 microsatellite markers that spanned the entire
Commonly deleted regions on the long arm of chromosome 21 in differentiated adenocarcinoma of the stomach
โ Scribed by Ken Sakata; Gen Tamura; Satoshi Nishizuka; Chihaya Maesawa; Yasushi Suzuki; Takeshi Iwaya; Masanori Terashima; Kazuyoshi Saito; Ryoichi Satodate
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 93 KB
- Volume
- 18
- Category
- Article
- ISSN
- 1045-2257
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โฆ Synopsis
During an allelotype analysis of differentiated adenocarcinoma of the stomach, we observed frequent loss of heterozygosity (LOH) on several chromosomes including the long arm of chromosome 21 (21q). Therefore, we analyzed DNA isolated from 45 tumors for LOH at 10 loci on 21q by using polymorphic microsatellite markers. In 20 (44%) of 45 tumors, we detected LOH at single or multiple loci on 21q. Deletion mapping of these 20 tumors revealed two separate commonly deleted regions. Our findings suggest that 21q contains at least two potential tumor suppressor genes which play crucial roles in the development of differentiated adenocarcinoma of the stomach.
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