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Published on: March 2, 2016
Flavivirus entry receptors: an update
Manuel Perera-Lecoin1, Laurent Meertens2, Xavier Carnec3
1INSERM U944, CNRS 7212, Laboratoire de Pathologie et Virologie Moléculaire, Hôpital Saint-Louis, 1 Avenue Claude Vellefaux, Paris 75010, France. manuel.perera@inserm.fr.
Abstract:
Flaviviruses enter host cells by endocytosis initiated when the virus particles interact with cell surface receptors. The current model suggests that flaviviruses use at least two different sets of molecules for infectious entry: attachment factors that concentrate and/or recruit viruses on the cell surface and primary receptor(s) that bind to virions and direct them to the endocytic pathway. Here, we present the currently available knowledge regarding the flavivirus receptors described so far with specific attention to C-type lectin receptors and the phosphatidylserine receptors, T-cell immunoglobulin and mucin domain (TIM) and TYRO3, AXL and MER (TAM). Their role in flavivirus attachment and entry as well as their implication in the virus biology will be discussed in depth.
Insights
Flaviviruses use specific cell surface receptors for entry into host cells. This review details C-type lectin and phosphatidylserine receptors, like TIM and TAM, crucial for flavivirus attachment and infection.
Area of Science:
- Virology
- Cell Biology
- Immunology
Background:
- Flaviviruses initiate host cell entry via endocytosis.
- Viral entry involves attachment factors and primary receptors directing viruses to endocytic pathways.
Purpose of the Study:
- To review current knowledge on flavivirus receptors.
- To focus on C-type lectin and phosphatidylserine receptors (TIM and TAM) in flavivirus entry.
Main Methods:
- Literature review of published studies on flavivirus-receptor interactions.
- Analysis of the roles of specific receptor families in viral attachment and entry.
Main Results:
- Flaviviruses utilize multiple receptor types for cell surface attachment and internalization.
- C-type lectin receptors and phosphatidylserine receptors (TIM, TAM) are key players in flavivirus infection.
Conclusions:
- Understanding flavivirus receptors is crucial for comprehending viral pathogenesis.
- Specific receptors like TIM and TAM offer potential targets for antiviral strategies.
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