Systemic tumor targeting and killing by Sindbis viral vectors.
Nat Biotechnol
; 22(1): 70-7, 2004 Jan.
Article
em En
| MEDLINE
| ID: mdl-14647305
ABSTRACT
Successful cancer gene therapy requires a vector that systemically and specifically targets tumor cells throughout the body. Although several vectors have been developed to express cytotoxic genes via tumor-specific promoters or to selectively replicate in tumor cells, most are taken up and expressed by just a few targeted tumor cells. By contrast, we show here that blood-borne Sindbis viral vectors systemically and specifically infect tumor cells. A single intraperitoneal treatment allows the vectors to target most tumor cells, as demonstrated by immunohistochemistry, without infecting normal cells. Further, Sindbis infection is sufficient to induce complete tumor regression. We demonstrate systemic vector targeting of tumors growing subcutaneously, intrapancreatically, intraperitoneally and in the lungs. The vectors can also target syngeneic and spontaneous tumors in immune-competent mice. We document the anti-tumor specificity of a vector that systemically targets and eradicates tumor cells throughout the body without adverse effects.
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Base de dados:
MEDLINE
Assunto principal:
Sindbis virus
/
Terapia Genética
/
Neoplasias
Limite:
Animals
Idioma:
En
Ano de publicação:
2004
Tipo de documento:
Article