PMID- 20535496 OWN - NLM STAT- MEDLINE DCOM- 20110519 LR - 20211020 IS - 1432-1335 (Electronic) IS - 0171-5216 (Linking) VI - 137 IP - 4 DP - 2011 Apr TI - Helicase-like transcription factor confers radiation resistance in cervical cancer through enhancing the DNA damage repair capacity. PG - 629-37 LID - 10.1007/s00432-010-0925-5 [doi] AB - Helicase-like transcription factor (HLTF) is a member of the SWI/SNF (mating type switching/sucrose non-fermenting) family of ATPases/helicases and also has a RING-finger motif characteristic of ubiquitin ligase proteins. These features have led to suggestions that HLTF functions like yeast Rad5, which promotes replication through DNA lesions via a post-replication repair pathway. However, the function of HLTF in higher eukaryotes is still unknown. Herein, we found the overexpression of HLTF in radiation recurrent human uterine cervical carcinoma tissues when compared to disease free survived patients tissues. In this study, we used RNA interference techniques to investigate the potential function of HLTF in cervical cancer cell line HeLa and found that the cell proliferation was reduced by knockdown (KD) of HLTF. A host-cell reactivation assay showed that the capacity for repair to DNA damage induced by X-ray irradiation was reduced in HLTF KD cells. X-rays also increased apoptosis in HLTF KD cells. These results suggest that HLTF is involved in DNA repair and apoptosis in cancer cells, which might represent a target for gene therapies of human cancer. FAU - Cho, SungHwan AU - Cho S AD - Department of Radiation Oncology, Chungbuk National University College of Medicine, Cheongju 361-763, Republic of Korea. FAU - Cinghu, Senthilkumar AU - Cinghu S FAU - Yu, Jae-Ran AU - Yu JR FAU - Park, Woo-Yoon AU - Park WY LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20100610 PL - Germany TA - J Cancer Res Clin Oncol JT - Journal of cancer research and clinical oncology JID - 7902060 RN - 0 (DNA-Binding Proteins) RN - 0 (HLTF protein, human) RN - 0 (RNA, Small Interfering) RN - 0 (Transcription Factors) SB - IM MH - Apoptosis MH - Cell Proliferation MH - DNA Damage MH - *DNA Repair MH - DNA-Binding Proteins/analysis/*physiology MH - Female MH - HeLa Cells MH - Humans MH - RNA, Small Interfering/genetics MH - *Radiation Tolerance MH - Transcription Factors/analysis/*physiology MH - Uterine Cervical Neoplasms/pathology/*radiotherapy EDAT- 2010/06/11 06:00 MHDA- 2011/05/20 06:00 CRDT- 2010/06/11 06:00 PHST- 2010/03/21 00:00 [received] PHST- 2010/05/22 00:00 [accepted] PHST- 2010/06/11 06:00 [entrez] PHST- 2010/06/11 06:00 [pubmed] PHST- 2011/05/20 06:00 [medline] AID - 10.1007/s00432-010-0925-5 [doi] PST - ppublish SO - J Cancer Res Clin Oncol. 2011 Apr;137(4):629-37. doi: 10.1007/s00432-010-0925-5. Epub 2010 Jun 10.