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. 2001 Jan;7(1):120-6.

A conditionally replicative adenovirus with enhanced infectivity shows improved oncolytic potency

K Suzuki  1 , J Fueyo, V Krasnykh, P N Reynolds, D T Curiel, R Alemany
Affiliations
  • PMID: 11205899

A conditionally replicative adenovirus with enhanced infectivity shows improved oncolytic potency

K Suzuki et al. Clin Cancer Res. 2001 Jan.

Abstract

The absence or the presence of low levels of the Coxsackievirus and adenovirus receptor (CAR) on several tumor types might limit the efficacy of recently proposed tumor-specific or conditionally replicative adenoviruses (CRAds). To address this issue, we used a genetic modification of the fiber knob in the context of an E1A-defective CRAd to allow CAR-independent target cell infection as a means to enhance oncolytic potency. Such infectivity-enhanced CRAd showed higher replication, more efficient infection, and lysis of tumor cells in vitro. Of note, the improved antitumor effect of the fiber-modified CRAd could be demonstrated in vivo. We conclude that the combination of genomic modification to achieve tumor-selective replication and capsid modification to enhance infectivity yields more potent oncolytic adenoviruses for use in cancer treatment.

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