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- W1968619900 abstract "Oncolytic herpes simplex virus (oHSV) vectors have shown promise in the treatment of patients with recurrent brain tumors although few complete responses have accrued. Impediments to effective therapy include limited vector distribution on delivery, a consequence of injected virion particle trapping in the tumor extracellular matrix (ECM). To enhance virus delivery and spread, we investigated the use of the matrix metalloproteinase-9 (MMP-9) as a means to degrade collagen type IV, a major component of the ECM and basement membranes of gliomas that is absent in normal brain tissue. SK-N-AS neuroblastoma cells were transduced for constitutive, elevated expression of MMP-9, which did not enhance tumor cell migration in vitro or tumor progression in a murine xenograft brain tumor model. MMP-9 expression improved the distribution and infection of oHSV vectors in spheroid model in vitro. Furthermore, MMP9 induced a vector infection over larger areas of brain tumors in vivo. These results suggest that vector delivery and distribution in vivo can be improved by compromising the ECM, potentially enhancing oncolytic efficacy." @default.
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- W1968619900 date "2010-05-13" @default.
- W1968619900 modified "2023-10-15" @default.
- W1968619900 title "Ectopic matrix metalloproteinase-9 expression in human brain tumor cells enhances oncolytic HSV vector infection" @default.
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- W1968619900 doi "https://doi.org/10.1038/gt.2010.66" @default.
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