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10.1111/cmi.12112

http://scihub22266oqcxt.onion/10.1111/cmi.12112
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23351194!7162402!23351194
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suck abstract from ncbi


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pmid23351194      Cell+Microbiol 2013 ; 15 (7): 1234-52
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  • EWI-2wint promotes CD81 clustering that abrogates Hepatitis C Virus entry #MMPMID23351194
  • Potel J; Rassam P; Montpellier C; Kaestner L; Werkmeister E; Tews BA; Couturier C; Popescu CI; Baumert TF; Rubinstein E; Dubuisson J; Milhiet PE; Cocquerel L
  • Cell Microbiol 2013[Jul]; 15 (7): 1234-52 PMID23351194show ga
  • CD81 is a major receptor for Hepatitis C Virus (HCV). It belongs to the tetraspanin family whose members form dynamic clusters with numerous partner proteins and with one another, forming tetraspanin-enriched areas in the plasma membrane. In our study, we combined single-molecule microscopy and biochemistry experiments to investigate the clustering and membrane behaviour of CD81 in the context of cells expressing EWI-2wint, a natural inhibitor of HCV entry. Interestingly, we found that EWI-2wint reduces the global diffusion of CD81 molecules due to a decrease of the diffusion rate of mobile CD81 molecules and an increase in the proportion of confined molecules. Indeed, we demonstrated that EWI-2wint promotes CD81 clustering and confinement in CD81-enriched areas. In addition, we showed that EWI-2wint influences the colocalization of CD81 with Claudin-1 - a co-receptor required for HCV entry. Together, our results indicate that a change in membrane partitioning of CD81 occurs in the presence of EWI-2wint. This study gives new insights on the mechanism by which HCV enters into its target cells, namely by exploiting the dynamic properties of CD81.
  • |*Host-Pathogen Interactions[MESH]
  • |*Virus Internalization[MESH]
  • |Antigens, CD/*metabolism[MESH]
  • |Cell Line[MESH]
  • |Hepacivirus/*physiology[MESH]
  • |Hepatocytes/virology[MESH]
  • |Humans[MESH]
  • |Membrane Proteins/*metabolism[MESH]
  • |Receptors, Virus/*metabolism[MESH]


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