Entry of human rhinovirus 89 via ICAM-1 into HeLa epithelial cells is inhibited by actin skeleton disruption and by bafilomycin

Entry of human rhinovirus 89 via ICAM-1 into HeLa epithelial cells is inhibited by actin skeleton... HRV89, a major-group rhinovirus, uses intercellular adhesion molecule 1 (ICAM-1) for cell entry, while minor-group HRV2 uses the LDL receptor for clathrin-mediated endocytosis. Entry of HRV89 into HeLa epithelial cells was found to be inefficient, and infectious virus was still detected on the plasma membrane after 3 h of incubation with the cells. Endocytosis, and consequently infection, of HRV89 but not of HRV2, was almost completely blocked by the actin-polymerization inhibitor cytochalasin D, while the phosphatidylinositol 3-kinase inhibitor LY294002 had no effect on infection with either virus. Cytochalasin D also inhibited major-group HRV infection of rhabdomyosarcoma cells expressing ICAM-1 when the time available for uncoating was limited to 30 min. Although cholesterol depletion strongly inhibited HRV89 infection of HeLa cells, it only slightly affected HRV89 endocytosis, indicating that a lipid raft environment was not essential for virus uptake. The sodium-proton exchange inhibitor 5-(N-ethyl-N-isopropyl) amiloride (EIPA) significantly reduced cell entry and infection by HRV89 only at a concentration that also inhibited HRV2 infection and Alexa 488-transferrin entry. These data rule out classical macropinocytosis as an infectious entry pathway of HRV89 in HeLa cells. Notably, the proton ATPase inhibitor bafilomycin strongly affected cell entry of both viruses, suggesting a role for submembraneous pH in rhinovirus endocytosis. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Entry of human rhinovirus 89 via ICAM-1 into HeLa epithelial cells is inhibited by actin skeleton disruption and by bafilomycin

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Springer Vienna
Copyright © 2014 by Springer-Verlag Wien
Biomedicine; Virology; Medical Microbiology; Infectious Diseases
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    Carpen, O; Pallai, P; Staunton, DE; Springer, TA
  • Cytoskeleton-membrane interactions in membrane raft structure
    Chichili, GR; Rodgers, W
  • Discovery of new cargo proteins that enter cells through clathrin-independent endocytosis
    Eyster, CA; Higginson, JD; Huebner, R; Porat-Shliom, N; Weigert, R; Wu, WW; Shen, RF; Donaldson, JG
  • Rho-kinase dependent organization of stress fibers and focal adhesions in cultured fibroblasts
    Katoh, K; Kano, Y; Ookawara, S
  • Gulping rather than sipping: macropinocytosis as a way of virus entry
    Mercer, J; Helenius, A
  • Effects of cytochalasin D on the actin cytoskeleton: association of neoformed actin aggregates with proteins involved in signaling and endocytosis
    Mortensen, K; Larsson, LI
  • Control of intracellular trafficking of ICAM-1-targeted nanocarriers by endothelial Na+/H+ exchanger proteins
    Muro, S; Mateescu, M; Gajewski, C; Robinson, M; Muzykantov, VR; Koval, M
  • Vacuolar H+-ATPase in human breast cancer cells with distinct metastatic potential: distribution and functional activity
    Sennoune, SR; Bakunts, K; Martinez, GM; Chua-Tuan, JL; Kebir, Y; Attaya, MN; Martinez-Zaguilan, R

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