| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
Drug resistance is one of the major issues in managing esophageal cancer patients as chemotherapy is a pillar treatment today. Since drug resistance may be mediated by genetic changes in the tumor, the identification of gene mutation may lead to better outcomes in therapy. We performed a novel method using transposon for a comprehensive screening with a view to identify drug resistant genes. Transposons are DNA sequences that move from one location on the genome to another. By this nature, a modified piggyBac transposon was designed as an insertion mutagen. A cytomegalovirus (CMV) promoter sequence was added to initiate strong transcription. When the transposon is inserted to the upstream of a certain gene, the gene will be up-regulated while when inserted downstream of intragenicaly it will be down regulated. The method is inexpensive and relatively simple, and capable both in activation and disruption, leading to comprehensive screening.
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