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Koller, E. et al.

Koller, Propp, Zhang, Zhao, Xiao, Chang, Hirsch, Shepard, Koo, Murphy, Glazer, Dean,

Use of a chemically modified antisense oligonucleotide library to identify and validate Eg5 (kinesin-like 1) as a target for antineoplastic drug development.

A library of 2'-methoxyethyl-modified antisense oligonucleotides (2'MOE ASO) targeting 1,510 different genes has been developed, validated, and used to identify cell cycle regulatory genes. The most effective molecular target identified was Eg5 (kinesin-like-1), which when inhibited gave the largest increase in 4N DNA in various tumor cells. The Eg5 ASO reduced Eg5 levels, inhibited proliferation, increased apoptosis, and altered the expression of other cell cycle proteins, including survivin and Aurora-A. To examine the therapeutic utility of the Eg5 ASO, the compound was also evaluated in xenograft models. Treatment with Eg5 ASO produced a statistically significant reduction of tumor growth, reduction in Eg5 expression in the tumors, and changes in histone phosphorylation, consistent with a loss of Eg5 protein expression. These data show, for the first time, the utility of a 2'MOE ASO library for high-throughput cell culture-based functional assays and suggest that an Eg5 ASO also has potential in a therapeutic strategy.[1]

References

Use of a chemically modified antisense oligonucleotide library to identify and validate Eg5 (kinesin-like 1) as a target for antineoplastic drug development. Koller, E., Propp, S., Zhang, H., Zhao, C., Xiao, X., Chang, M., Hirsch, S.A., Shepard, P.J., Koo, S., Murphy, C., Glazer, R.I., Dean, N.M. Cancer Res. (2006) [Pubmed]

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