Isolation of HELAD1, a novel human helicase gene up-regulated in colorectal carcinomas

被引：27
|
作者：
Ishiguro, H
Shimokawa, T
Tsunoda, T
Tanaka, T
Fujii, Y
Nakamura, Y
Furukawa, Y
机构：
[1] Univ Tokyo, Mol Med Lab, Ctr Human Genome, Inst Med Sci,Minato Ku, Tokyo 1088639, Japan
[2] Nagoya City Univ, Dept Surg 2, Sch Med, Mizuho Ku, Nagoya, Aichi 4678601, Japan
[3] RIKEN, Inst Phys & Chem Res, SNP Res Ctr, Minato Ku, Tokyo 1088639, Japan
来源：
ONCOGENE | 2002年 / 21卷 / 41期
基金：
日本学术振兴会;
关键词：
helicase; APC; HELAD1; colon cancer;
D O I：
10.1038/sj.onc.1205751
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
To investigate the mechanisms of colorectal carcinogenesis, we searched for genes regulated by adenomatous polyposis coli gene product (APC) and identified a novel gene, termed HELAD1 (helicase, APC down-regulated 1). A recombinant polypeptide representing the ATPases associated with cellular activities (AAA) domain of the HELAD1 product showed 3' to 5' helicase activity and exonuclease activity in vitro. HELAD1 was abundantly expressed in 16 of 20 colon cancers examined but hardly detectable in corresponding non-cancerous mucosae. Treatment of colon-cancer cells with antisense oligonucleotides suppressed its expression and induced apoptosis. These data revealed an importance of HELAD1 in colorectal carcinogenesis and suggest that suppression of HELAD1 may be a promising therapeutic strategy.
引用
收藏
页码：6387 / 6394
页数：8
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