PMID- 17653103 OWN - NLM STAT- MEDLINE DCOM- 20080111 LR - 20231120 IS - 1525-0016 (Print) IS - 1525-0016 (Linking) VI - 15 IP - 11 DP - 2007 Nov TI - Human matrix metalloproteinase-8 gene delivery increases the oncolytic activity of a replicating adenovirus. PG - 1982-90 AB - The success of replicating adenoviruses for cancer therapy is limited by inefficient virus delivery and poor distribution within the tumor mass. Stromal matrix within the tumor may hinder the free cell-to-cell spread of the virus. In this study, in vitro cell culture experiments showed that collagen I blocked the passage of an adenoviral vector through a membrane. On the basis of reports of the effective collagen I-degrading activity of matrix metalloproteinase-8 (MMP-8), we constructed an adenovirus to express the MMP-8 transgene (AdMMP8). A549 cells infected in vitro with AdMMP8 did not show altered growth but were able to modify a fibrillar collagen substrate to allow viral diffusion. Further, AdMMP8 did not affect replication of the wild-type virus (Adwt300). Established human A549 lung cancer and BxPC-3 pancreatic cancer xenograft tumors that were injected with Adwt300 together with the non-replicating AdMMP8 virus showed significantly reduced growth compared with control tumors. Histochemical analysis showed reduced amounts of collagen within necrotic areas of MMP-8-injected tumors compared with controls. These results demonstrate that intra-tumoral expression of MMP-8 is a possible strategy for improving viral spread and improving the oncolytic activity of replicating adenovirus. FAU - Cheng, Jin AU - Cheng J AD - Division of Pulmonary and Critical Care Medicine, New York University School of Medicine, New York, New York 10016, USA. FAU - Sauthoff, Harald AU - Sauthoff H FAU - Huang, YaoQi AU - Huang Y FAU - Kutler, David I AU - Kutler DI FAU - Bajwa, Sofia AU - Bajwa S FAU - Rom, William N AU - Rom WN FAU - Hay, John G AU - Hay JG LA - eng GR - M01RR-00096/RR/NCRR NIH HHS/United States GR - R01CA102053/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20070724 PL - United States TA - Mol Ther JT - Molecular therapy : the journal of the American Society of Gene Therapy JID - 100890581 RN - 0 (RNA, Messenger) RN - 9007-34-5 (Collagen) RN - EC 3.4.24.34 (Matrix Metalloproteinase 8) SB - IM MH - Adenoviridae/*physiology MH - Cell Line MH - Cell Survival MH - Collagen/metabolism MH - Gene Expression Regulation, Enzymologic MH - Gene Expression Regulation, Neoplastic MH - Humans MH - Lung Neoplasms/*enzymology/genetics/*pathology MH - Matrix Metalloproteinase 8/genetics/*metabolism MH - RNA, Messenger/genetics MH - *Transduction, Genetic MH - *Virus Replication EDAT- 2007/07/27 09:00 MHDA- 2008/01/12 09:00 CRDT- 2007/07/27 09:00 PHST- 2007/07/27 09:00 [pubmed] PHST- 2008/01/12 09:00 [medline] PHST- 2007/07/27 09:00 [entrez] AID - S1525-0016(16)32661-2 [pii] AID - 10.1038/sj.mt.6300264 [doi] PST - ppublish SO - Mol Ther. 2007 Nov;15(11):1982-90. doi: 10.1038/sj.mt.6300264. Epub 2007 Jul 24.