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Repurposing Albendazole: new potential as a chemotherapeutic agent with preferential activity against HPV-negative head and neck squamous cell cancer.

  • Author(s): Ghasemi, Farhad
  • Black, Morgan
  • Vizeacoumar, Frederick
  • Pinto, Nicole
  • Ruicci, Kara M
  • Le, Carson Cao Son Huu
  • Lowerison, Matthew R
  • Leong, Hon Sing
  • Yoo, John
  • Fung, Kevin
  • MacNeil, Danielle
  • Palma, David A
  • Winquist, Eric
  • Mymryk, Joe S
  • Boutros, Paul C
  • Datti, Alessandro
  • Barrett, John W
  • Nichols, Anthony C
  • et al.

Albendazole is an anti-helminthic drug that has been shown to exhibit anti-cancer properties, however its activity in head and neck squamous cell cancer (HNSCC) was unknown. Using a series of in vitro assays, we assessed the ability of albendazole to inhibit proliferation in 20 HNSCC cell lines across a range of albendazole doses (1 nM-10 μM). Cell lines that responded to treatment were further examined for cell death, inhibition of migration and cell cycle arrest. Thirteen of fourteen human papillomavirus-negative HNSCC cell lines responded to albendazole, with an average IC50 of 152 nM. In contrast, only 3 of 6 human papillomavirus-positive HNSCC cell lines responded. Albendazole treatment resulted in apoptosis, inhibition of cell migration, cell cycle arrest in the G2/M phase and altered tubulin distribution. Normal control cells were not measurably affected by any dose tested. This study indicates that albendazole acts to inhibit the proliferation of human papillomavirus-negative HNSCC cell lines and thus warrants further study as a potential chemotherapeutic agent for patients suffering from head and neck cancer.

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