Certification assays for HIV-1-based vectors: frequent passage of gag sequences without evidence of replication-competent viruses

Abstract excerpt

A principal concern regarding the safety of HIV-1-based vectors is replication-competent lentivirus (RCL). We have developed two PCR assays for detecting RCL; the first detects recombination between gag regions in the transfer vector and the packaging construct (sensitivity of detection approximately 10-100 copies of target sequence). The second assay uses real-time PCR to detect vesicular stomatitis virus...

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