期刊
HUMAN GENE THERAPY
卷 16, 期 1, 页码 139-146出版社
MARY ANN LIEBERT, INC
DOI: 10.1089/hum.2005.16.139
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资金
- NCI NIH HHS [CA71704, CA81829, CA58538] Funding Source: Medline
- NATIONAL CANCER INSTITUTE [R41CA081829, R42CA081829, R01CA058538, R01CA071704] Funding Source: NIH RePORTER
Oncolytic human adenovirus ( Ad) vectors exert their antitumor effect by replicating in and lysing tumor cells. These vectors are commonly evaluated in immunodeficient mice bearing human tumor xenografts. However, this model suffers because the mice are immunodeficient and are not permissive for human Ads. We have developed a cotton rat model to test the selectivity, immunogenicity, and efficacy of oncolytic Ad vectors. The cotton rat is a rodent species that is semipermissive for human Ads. We show that the cotton cancer rat cell line LCRT supports the replication of human Ad in tissue culture and that the cells are destroyed on virus replication. When injected subcutaneously, LCRT cells formed tumors in immunocompetent cotton rats, and the growth of these tumors was delayed by the injection of an oncolytic Ad vector. Replication of the Ad vector in the tumor was demonstrated by sampling tumor tissue and isolating infectious virus particles at various times after intratumoral injection of the virus. We propose that the cotton rat can be used as an animal model to evaluate oncolytic Ad vectors.
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