PMID- 22836062 OWN - NLM STAT- MEDLINE DCOM- 20130107 LR - 20211203 IS - 1879-355X (Electronic) IS - 0360-3016 (Linking) VI - 84 IP - 4 DP - 2012 Nov 15 TI - Expression of hPNAS-4 radiosensitizes Lewis lung cancer. PG - e533-40 LID - S0360-3016(12)00854-1 [pii] LID - 10.1016/j.ijrobp.2012.06.028 [doi] AB - PURPOSE: This study aimed to transfer the hPNAS-4 gene, a novel apoptosis-related human gene, into Lewis lung cancer (LL2) and observe its radiosensitive effect on radiation therapy in vitro and in vivo. METHODS AND MATERIALS: The hPNAS-4 gene was transfected into LL2 cells, and its expression was detected via western blot. Colony formation assay and flow cytometry were used to detect the growth and apoptosis of cells treated with irradiation/PNAS-4 in vitro. The hPNAS-4 gene was transferred into LL2-bearing mice through tail vein injection of the liposome/gene complex. The tumor volumes were recorded after radiation therapy. Proliferating cell nuclear antigen (PCNA) immunohistochemistry staining and terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) assay were performed to detect the tumor cell growth and apoptosis in vivo. RESULTS: The hPNAS-4 gene was successfully transferred into LL2 cells and tumor tissue, and its overexpressions were confirmed via western blot analysis. Compared with the control, empty plasmid, hPNAS-4, radiation, and empty plasmid plus radiation groups, the hPNAS-4 plus radiation group more significantly inhibited growth and enhanced apoptosis of LL2 cells in vitro and in vivo (P<.05). CONCLUSIONS: The hPNAS-4 gene was successfully transferred into LL2 cells and tumor tissue and was expressed in both LL2 cell and tumor tissue. The hPNAS-4 gene therapy significantly enhanced growth inhibition and apoptosis of LL2 tumor cells by radiation therapy in vitro and in vivo. Therefore, it may be a potential radiosensitive treatment of radiation therapy for lung cancer. CI - Copyright (c) 2012 Elsevier Inc. All rights reserved. FAU - Zeng, Hui AU - Zeng H AD - Department of Radiation Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China. FAU - Yuan, Zhu AU - Yuan Z FAU - Zhu, Hong AU - Zhu H FAU - Li, Lei AU - Li L FAU - Shi, Huashan AU - Shi H FAU - Wang, Zi AU - Wang Z FAU - Fan, Yu AU - Fan Y FAU - Deng, Qian AU - Deng Q FAU - Zeng, Jianshuang AU - Zeng J FAU - He, Yinbo AU - He Y FAU - Xiao, Jianghong AU - Xiao J FAU - Li, Zhiping AU - Li Z LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120724 PL - United States TA - Int J Radiat Oncol Biol Phys JT - International journal of radiation oncology, biology, physics JID - 7603616 RN - 0 (Apoptosis Regulatory Proteins) RN - 0 (Neoplasm Proteins) RN - 0 (RNA, Small Interfering) RN - EC 4.3.- (Carbon-Nitrogen Lyases) RN - EC 4.3.- (DESI2 protein, human) SB - IM MH - Animals MH - Apoptosis MH - Apoptosis Regulatory Proteins/genetics/*metabolism MH - Carbon-Nitrogen Lyases MH - Carcinoma, Lewis Lung/*metabolism/pathology/*therapy MH - Cell Line, Tumor MH - Female MH - Flow Cytometry MH - Humans MH - In Situ Nick-End Labeling/methods MH - Lung Neoplasms/*metabolism/pathology/*therapy MH - Mice MH - Mice, Inbred C57BL MH - Neoplasm Proteins/genetics/*metabolism MH - RNA, Small Interfering/pharmacology MH - Random Allocation MH - Transfection/methods MH - Tumor Burden MH - Tumor Stem Cell Assay EDAT- 2012/07/28 06:00 MHDA- 2013/01/08 06:00 CRDT- 2012/07/28 06:00 PHST- 2011/12/21 00:00 [received] PHST- 2012/06/01 00:00 [revised] PHST- 2012/06/15 00:00 [accepted] PHST- 2012/07/28 06:00 [entrez] PHST- 2012/07/28 06:00 [pubmed] PHST- 2013/01/08 06:00 [medline] AID - S0360-3016(12)00854-1 [pii] AID - 10.1016/j.ijrobp.2012.06.028 [doi] PST - ppublish SO - Int J Radiat Oncol Biol Phys. 2012 Nov 15;84(4):e533-40. doi: 10.1016/j.ijrobp.2012.06.028. Epub 2012 Jul 24.