Relationship between Cell Receptors and Tumor Cell Sensitivity to Oncolytic Enteroviruses.

Replicative ability of 5 oncolytic enterovirus strains was evaluated on a panel of 18 human normal and tumor cells. The capacity of each cell line to support replication of enterovirus strains varied. Cell lines weakly replicating one virus could be highly sensitive to another viral strain. Differences in the expression of CXADR cell receptor did not correlate with susceptibility to infection and replication of Coxsackie B virus, but complete inactivation of CXADR gene and poliovirus receptor gene (PVR) led to loss of the sensitivity to Coxsackie B5 and poliovirus, respectively. Detection of additional expression markers will contribute to understanding the causes of different sensitivity of tumor cells to viruses.