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Small-Molecule Inhibitors of Protein-Protein Interactions pp 61–88Cite as

Small Molecule Inhibitors of the Human Papillomavirus E1-E2 Interaction

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Part of the book series: Current Topics in Microbiology and Immunology ((CT MICROBIOLOGY,volume 348))

Abstract

Human papillomaviruses are responsible for multiple human diseases, including cervical cancer caused by multiple high-risk types and genital warts caused by the low-risk types 6 and 11. Based on the research indicating that low-risk HPV could be successfully targeted by inhibitors of viral DNA replication, we carried out several high-throughput screens for inhibitors of DNA replication activities. Two series were identified in screens for inhibitors of the interaction between the viral proteins E1 and E2. The two series were demonstrated to bind to overlapping sites on the transactivation domain of E2, at the E1-binding interface, by a series of biochemical and biophysical experiments. A member of the first series was also cocrystallized with the E2 transactivation domain. For both series, structure-activity investigations are described, which resulted in several hundred fold improvements in activity. The best compounds in each series had low nanomolar activity against the HPV11 E1–E2 interaction, and EC50 values in cellular DNA replication assays of approximately 1 μM. Binding modes for the two series are compared, and some general conclusions about the discovery of protein-protein interaction inhibitors are drawn from the work described.

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Acknowledgement

We thank the many other scientists at Boehringer Ingelheim (Canada) who contributed to the HPV research program. In particular, we acknowledge the work and insights provided by Jacques Archambault, Christiane Yoakim, Youla Tsantrizos, Lynn Amon, Dale Cameraon, Jianmin Duan, and Michael Cordingley.

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Authors and Affiliations

  1. Boehringer Ingelheim (Canada) Ltd, 2100 Cunard St., Laval, H7S 2G5, QC, Canada

    Peter W. White, Anne-Marie Faucher & Nathalie Goudreau

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  1. Peter W. White
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  2. Anne-Marie Faucher
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  3. Nathalie Goudreau
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Corresponding author

Correspondence to Peter W. White .

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Editors and Affiliations

  1. Roche Research Center, Dept. Discovery Oncology, Hoffmann-La Roche Inc., Kingsland Street 340, Nutley, 07110-1199, New Jersey, USA

    Lyubomir Vassilev

  2. Roche Research Center, Dept. of Discovery Oncology, Hoffmann-La Roche Inc., Kingsland Street 340, Nutley, 07110, New Jersey, USA

    David Fry

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White, P.W., Faucher, AM., Goudreau, N. (2010). Small Molecule Inhibitors of the Human Papillomavirus E1-E2 Interaction. In: Vassilev, L., Fry, D. (eds) Small-Molecule Inhibitors of Protein-Protein Interactions. Current Topics in Microbiology and Immunology, vol 348. Springer, Berlin, Heidelberg. https://doi.org/10.1007/82_2010_92

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