PMID- 16585865 OWN - NLM STAT- MEDLINE DCOM- 20060425 LR - 20121115 IS - 0023-852X (Print) IS - 0023-852X (Linking) VI - 116 IP - 4 DP - 2006 Apr TI - Growth suppression of human laryngeal squamous cell carcinoma by adenovirus-mediated tissue factor pathway inhibitor gene 2. PG - 596-601 AB - OBJECTIVE: The purpose of this study was to explore the inhibiting role of adenoviral-mediated (Ad)-tissue factor pathway inhibitor (TFPI)-2 gene in the growth of laryngeal squamous cell carcinoma (LSCC). STUDY DESIGN: The nude mice bearing LSCC were prepared by intracutaneous injection of Hep-2 cell. Gene therapy was performed by injecting adenoviruses carrying TFPI-2 gene around tumors in the animal model. METHODS: Eighteen nude mice bearing Hep-2 cell tumor were randomly separated into the treated group and control group. The former were injected with recombinant adenovirus Ad-TFPI-2 around the tumor, and the later were injected with equivalent Ad-LacZ. After treatment, differences of tumor weight, volume, and ultrastructure of tumor cells between these two groups were observed by measuring and using transmission electron microscope. Apoptosis in Hep-2 xenotransplants was detected using the terminal deoxy-transferase-mediated dUTP nick end labeling. In addition, the expressions of TFPI-2 protein and proliferating cell nuclear antigen (PCNA) in tumor tissues were detected using Western blot and immunohistochemistry, respectively. RESULTS: The average weight and volume of tumor in the treated group were significantly lower than that in the control group (P < .01). The PCNA index was obviously lower in the tumors treated group than that in the control group (P < .01). In addition, cell apoptosis was observed in xenotransplants of the treated group but not in the control group. CONCLUSION: Peritumor injection of Ad-TFPI-2 can inhibit growth of LSCC in nude mice model, and TFPI-2 might be a desirable gene for gene therapy in LSCC. FAU - Sun, Yanan AU - Sun Y AD - Department of Otorhinolaryngology--Head and Neck Surgery, The Second Affiliated Hospital, Harbin Medical University, Harbin, People's Republic of China. FAU - Xie, Minqiang AU - Xie M FAU - Liu, Ming AU - Liu M FAU - Jin, Dejun AU - Jin D FAU - Li, Peng AU - Li P LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Laryngoscope JT - The Laryngoscope JID - 8607378 RN - 0 (Glycoproteins) RN - 0 (Proliferating Cell Nuclear Antigen) RN - 0 (Serine Proteinase Inhibitors) RN - 0 (tissue-factor-pathway inhibitor 2) RN - EC 3.4.21.21 (Factor VIIa) SB - IM MH - Adenoviridae/genetics MH - Animals MH - Apoptosis MH - Blotting, Western MH - Carcinoma, Squamous Cell/metabolism/*pathology/therapy MH - Cell Line, Tumor MH - Factor VIIa/antagonists & inhibitors MH - Genetic Therapy/*methods MH - Genetic Vectors MH - Glycoproteins/biosynthesis/genetics/*therapeutic use MH - Humans MH - Immunohistochemistry MH - Laryngeal Neoplasms/metabolism/*pathology/therapy MH - Mice MH - Mice, Inbred BALB C MH - Microscopy, Electron, Transmission MH - Proliferating Cell Nuclear Antigen/metabolism MH - Serine Proteinase Inhibitors/genetics/*therapeutic use EDAT- 2006/04/06 09:00 MHDA- 2006/04/28 09:00 CRDT- 2006/04/06 09:00 PHST- 2006/04/06 09:00 [pubmed] PHST- 2006/04/28 09:00 [medline] PHST- 2006/04/06 09:00 [entrez] AID - 00005537-200604000-00016 [pii] AID - 10.1097/01.mlg.0000205589.84020.d2 [doi] PST - ppublish SO - Laryngoscope. 2006 Apr;116(4):596-601. doi: 10.1097/01.mlg.0000205589.84020.d2.