Abstract：
:The Bcl-2 homologue Bak is a potent inducer of apoptosis. We performed PCR-based single-strand conformational polymorphism and sequencing analysis of the entire coding region of the bak gene (exons 2-6) in 24 primary gastric cancers (6 early-stage and 18 advanced-stage cancers) and 20 primary colorectal cancers (6 early-stage and 14 advanced-stage cancers). The data herein demonstrate, for the first time, the mutation of the bak gene in gastric and colorectal cancers. Missense bak gene mutations were observed in 3 of 24 (12.5%) gastric cancers and 2 of 20 (10.0%) colorectal cancers. Sequence alterations without amino acid alteration were observed 1 of 24 (4.2%) gastric cancers and 2 of 20 (10.0%) colorectal cancers. Mutations in the bak gene were observed only in advanced-stage gastrointestinal cancers but not in early-stage cancers. Our observations suggest that mutations in this gene predispose bearers to the development of gastrointestinal malignancies in at least a subset of the cases.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Kondo S,Shinomura Y,Miyazaki Y,Kiyohara T,Tsutsui S,Kitamura S,Nagasawa Y,Nakahara M,Kanayama S,Matsuzawa Ysubject
Has Abstractpub_date
2000-08-15 00:00:00pages
4328-30issue
16eissn
0008-5472issn
1538-7445journal_volume
60pub_type
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