Archives of Virology

, Volume 159, Issue 3, pp 425–435

Topical application of polyethylenimine as a candidate for novel prophylactic therapeutics against genital herpes caused by herpes simplex virus

  • Kyoko Hayashi
  • Hiroki Onoue
  • Kohei Sasaki
  • Jung-Bum Lee
  • Penmetcha K. R. Kumar
  • Subash C. B. Gopinath
  • Yoshie Maitani
  • Takashi Kai
  • Toshimitsu Hayashi
Original Article


Herpes simplex virus types 1 (HSV-1) and 2 (HSV-2) cause genital herpes, which can enhance the acquisition of human immunodeficiency virus. The development of anti-HSV agents with novel mechanisms of action is urgently required in the topical therapy of genital herpes. In this study, the in vitro and in vivo anti-HSV effects of Epomin SP-012®, a highly cationic polyethylenimine, were evaluated. When the in vitro antiviral effects of SP-012 were assessed, this compound showed potent activity against HSV-1 and HSV-2. It inhibited the attachment of HSV-2 to host cells and cell-to-cell spread of infection in a concentration-dependent manner and exerted a virucidal effect. No SP-012-resistant HSV-2 was found when the virus was successively passaged in the presence of SP-012. In a mouse genital herpes model, topically administered SP-012 inhibited the progression of the disease caused by HSV infection. These data illustrate that SP-012 may be a novel class of HSV inhibitor that would be acceptable for long-term topical application.


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Copyright information

© Springer-Verlag Wien 2013

Authors and Affiliations

  • Kyoko Hayashi
    • 1
  • Hiroki Onoue
    • 1
  • Kohei Sasaki
    • 1
  • Jung-Bum Lee
    • 1
  • Penmetcha K. R. Kumar
    • 2
  • Subash C. B. Gopinath
    • 2
  • Yoshie Maitani
    • 3
  • Takashi Kai
    • 4
  • Toshimitsu Hayashi
    • 1
  1. 1.Gradutae School of Medicine and Pharmaceutical Sciences for ResearchUniversity of ToyamaToyamaJapan
  2. 2.Biomedical Research Institute, Central 6National Institute of Advanced Industrial Science and TechnologyTsukubaJapan
  3. 3.Institute of Medicinal ChemistryHoshi UniversityTokyoJapan
  4. 4.Nippon Shokubai Co. Ltd.TokyoJapan

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