Role of Transmembrane Protein 16F in the Incorporation of Phosphatidylserine Into Budding Ebola Virus Virions

Patrick Younan, Mathieu Iampietro, Rodrigo I. Santos, Palaniappan Ramanathan, Vsevolod Popov, Alexander Bukreyev

Research output: Contribution to journalArticle

Abstract

Viral apoptotic mimicry, which is defined by exposure of phosphatidylserine (PtdSer) into the outer leaflet of budding enveloped viruses, increases viral tropism, infectivity and promotes immune evasion. Here, we report that the calcium (Ca2+)-dependent scramblase, transmembrane protein 16F (TMEM16F), is responsible for the incorporation of PtdSer into virion membranes during Ebola virus infection. Infection of Huh7 cells with Ebola virus resulted in a pronounced increase in plasma membrane-associated PtdSer, which was demonstrated to be dependent on TMEM16F function. Analysis of virions using imaging flow cytometry revealed that short hairpin RNA-mediated down-regulation of TMEM16F function directly reduced virion-associated PtdSer. Taken together, these studies demonstrate that TMEM16F is a central cellular factor in the exposure of PtdSer in the outer leaflet of viral membranes.

Original languageEnglish (US)
Pages (from-to)S335-S345
JournalThe Journal of infectious diseases
Volume218
Issue number5
DOIs
StatePublished - Nov 22 2018

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Ebolavirus
Phosphatidylserines
Virion
Proteins
Ebola Hemorrhagic Fever
Viral Tropism
Virus Release
Immune Evasion
Membranes
Small Interfering RNA
Flow Cytometry
Down-Regulation
Cell Membrane
Calcium
Infection

ASJC Scopus subject areas

  • Immunology and Allergy
  • Infectious Diseases

Cite this

Role of Transmembrane Protein 16F in the Incorporation of Phosphatidylserine Into Budding Ebola Virus Virions. / Younan, Patrick; Iampietro, Mathieu; Santos, Rodrigo I.; Ramanathan, Palaniappan; Popov, Vsevolod; Bukreyev, Alexander.

In: The Journal of infectious diseases, Vol. 218, No. 5, 22.11.2018, p. S335-S345.

Research output: Contribution to journalArticle

Younan, Patrick ; Iampietro, Mathieu ; Santos, Rodrigo I. ; Ramanathan, Palaniappan ; Popov, Vsevolod ; Bukreyev, Alexander. / Role of Transmembrane Protein 16F in the Incorporation of Phosphatidylserine Into Budding Ebola Virus Virions. In: The Journal of infectious diseases. 2018 ; Vol. 218, No. 5. pp. S335-S345.
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