Mosquito cells persistently infected with dengue virus produce viral particles with host-dependent replication

José Manuel Reyes-Ruiz, Juan Fidel Osuna-Ramos, Patricia Bautista-Carbajal, Elizabeth Jaworski, Rubén Soto-Acosta, Margot Cervantes-Salazar, Antonio H. Angel-Ambrocio, Juan Pablo Castillo-Munguía, Bibiana Chávez-Munguía, Mónica De Nova-Ocampo, Andrew Routh, Rosa María del Ángel, Juan Santiago Salas-Benito

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Abstract

Dengue viruses (DENV) are important arboviruses that can establish a persistent infection in its mosquito vector Aedes. Mosquitoes have a short lifetime in nature which makes trying to study the processes that take place during persistent viral infections in vivo. Therefore, C6/36 cells have been used to study this type of infection. C6/36 cells persistently infected with DENV 2 produce virions that cannot infect BHK -21 cells. We hypothesized that the following passages in mosquito cells have a deleterious impact on DENV fitness in vertebrate cells. Here, we demonstrated that the viral particles released from persistently infected cells were infectious to mosquito but not to vertebrate cells. This host restriction occurs at the replication level and is associated with several mutations in the DENV genome. In summary, our findings provide new information about viral replication fitness in a host-dependent manner.

Original languageEnglish (US)
Pages (from-to)1-18
Number of pages18
JournalVirology
Volume531
DOIs
StatePublished - May 2019

Keywords

  • Dengue viruses
  • Host adaptation
  • Mosquito cells
  • Persistent viral infection
  • Viral fitness

ASJC Scopus subject areas

  • Virology

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    Reyes-Ruiz, J. M., Osuna-Ramos, J. F., Bautista-Carbajal, P., Jaworski, E., Soto-Acosta, R., Cervantes-Salazar, M., Angel-Ambrocio, A. H., Castillo-Munguía, J. P., Chávez-Munguía, B., De Nova-Ocampo, M., Routh, A., del Ángel, R. M., & Salas-Benito, J. S. (2019). Mosquito cells persistently infected with dengue virus produce viral particles with host-dependent replication. Virology, 531, 1-18. https://doi.org/10.1016/j.virol.2019.02.018