2. Academic Validation
  3. Isolation of HELAD1, a novel human helicase gene up-regulated in colorectal carcinomas

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

  • Oncogene. 2002 Sep 12;21(41):6387-94. doi: 10.1038/sj.onc.1205751.
Hideyuki Ishiguro 1,  Takashi Shimokawa,  Tatsuhiko Tsunoda,  Toshihiro Tanaka,  Yoshitaka Fujii,  Yusuke Nakamura,  Yoichi Furukawa
Affiliations

Affiliation

  • 1 Laboratory of Molecular Medicine, Human Genome Center, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku Tokyo 108-8639, Japan.
PMID: 12214280 DOI: 10.1038/sj.onc.1205751
Abstract

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.

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