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Teaching a new mouse old tricks: Humanized mice as an infection model for Variola virus.
Hutson, Christina L; Kondas, Ashley V; Ritter, Jana M; Reed, Zachary; Ostergaard, Sharon Dietz; Morgan, Clint N; Gallardo-Romero, Nadia; Tansey, Cassandra; Mauldin, Matthew R; Salzer, Johanna S; Hughes, Christine M; Goldsmith, Cynthia S; Carroll, Darin; Olson, Victoria A.
Afiliação
  • Hutson CL; Poxvirus and Rabies Branch, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Kondas AV; Poxvirus and Rabies Branch, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Ritter JM; Infectious Diseases Pathology Branch, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Reed Z; Poxvirus and Rabies Branch, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Ostergaard SD; Comparative Medicine Branch, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Morgan CN; Poxvirus and Rabies Branch, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Gallardo-Romero N; Poxvirus and Rabies Branch, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Tansey C; Comparative Medicine Branch, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Mauldin MR; Poxvirus and Rabies Branch, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Salzer JS; Poxvirus and Rabies Branch, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Hughes CM; Poxvirus and Rabies Branch, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Goldsmith CS; Infectious Diseases Pathology Branch, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Carroll D; Poxvirus and Rabies Branch, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Olson VA; Poxvirus and Rabies Branch, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
PLoS Pathog ; 17(9): e1009633, 2021 09.
Article em En | MEDLINE | ID: mdl-34547055
Smallpox, caused by the solely human pathogen Variola virus (VARV), was declared eradicated in 1980. While known VARV stocks are secure, smallpox remains a bioterrorist threat agent. Recent U.S. Food and Drug Administration approval of the first smallpox anti-viral (tecovirimat) therapeutic was a successful step forward in smallpox preparedness; however, orthopoxviruses can become resistant to treatment, suggesting a multi-therapeutic approach is necessary. Animal models are required for testing medical countermeasures (MCMs) and ideally MCMs are tested directly against the pathogen of interest. Since VARV only infects humans, a representative animal model for testing therapeutics directly against VARV remains a challenge. Here we show that three different humanized mice strains are highly susceptible to VARV infection, establishing the first small animal model using VARV. In comparison, the non-humanized, immunosuppressed background mouse was not susceptible to systemic VARV infection. Following an intranasal VARV challenge that mimics the natural route for human smallpox transmission, the virus spread systemically within the humanized mouse before mortality (~ 13 days post infection), similar to the time from exposure to symptom onset for ordinary human smallpox. Our identification of a permissive/representative VARV animal model can facilitate testing of MCMs in a manner consistent with their intended use.
Assuntos

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Varíola / Modelos Animais de Doenças Limite: Animals / Humans Idioma: En Ano de publicação: 2021 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Varíola / Modelos Animais de Doenças Limite: Animals / Humans Idioma: En Ano de publicação: 2021 Tipo de documento: Article