title: Filovirus entry into cells - new insights.
abstract: Filoviruses are hemorrhagic fever-causing agents that produce enveloped virions with a filamentous morphology. The viral surface glycoprotein, GP, orchestrates the surprisingly complex process by which filoviruses gain access to the cytoplasm of their host cells. GP mediates viral attachment to cells through multiple, redundant interactions with cell-surface factors. GP then induces virion internalization by a process that resembles cellular macropinocytosis. Within the endo/lysosomal pathway, GP undergoes a series of structural rearrangements, controlled by interactions with host factors, that prime and activate it to bring about fusion between the viral and cellular lipid bilayers. Membrane fusion delivers the viral nucleocapsid core into the cytoplasm, which is the site of filovirus replication. This review summarizes our understanding of the filovirus entry mechanism, with emphasis on recent findings.
authors.affiliation: Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY 10461, United States.
authors.forename: Emily Happy
authors.initials: EH
authors.lastname: Miller
authors.forename: Kartik
authors.initials: K
authors.lastname: Chandran
mesh_terms: D000818:Animals; D016563:Filoviridae / Q000235:genetics / Q000502:physiology*; D018702:Filoviridae Infections / Q000821:virology*; D006801:Humans; D014759:Viral Envelope Proteins / Q000235:genetics / Q000378:metabolism; D053586:Virus Internalization
chemical_list: D014759:Viral Envelope Proteins