Successful gene therapy requires targeting the vast majority of cancer cells.

ABSTRACT: Suicide gene therapy using gene-directed enzyme prodrug therapy (GDEPT) is based on delivering a gene-encoded enzyme to cells that converts a nontoxic prodrug into its toxic metabolite. The bystander effect is thought to compensate for inefficiencies in delivery and expression because the produced toxic metabolite can spread to adjacent non-expressing cells.The purpose of this study was to assess the significance of bystander effect in GDEPT over the long term in vivo.We performed experiments using mixtures of yeast cytosine deaminase (yCD) expressing and empty vector (EV) containing cells. First, the bystander effect was assessed in various ratios of colon cancer cell lines RKO with yCD/EV in 2D and 3D culture. Next, tumors raised from RKO with yCD/EV in mice were tre

SUBMITTER: Sagara T 

PROVIDER: S-EPMC7583496 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature