Predominant mode of human immunodeficiency virus transfer between T cells is mediated by sustained Env-dependent neutralization-resistant virological synapses

Chen P, Hübner W, Spinelli MA, Chen BK (2007)
Journal of virology 81(22): 12582-12595.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
Cell-free human immunodeficiency virus type 1 (HIV-1) can initiate infections, but contact between infected and uninfected T cells can enhance viral spread through intercellular structures called virological synapses (VS). The relative contribution of VS to cell-free viral transfer has not been carefully measured. Using an ultrasensitive, fluorescent virus transfer assay, we estimate that when VS between HIV-expressing Jurkat T cells and primary CD4(+) T cells are formed, cell-associated transfer of virus is 18,000-fold more efficient than uptake of cell-free virus. Furthermore, in contrast to cell-free virus uptake, the VS deposits virus rapidly into focal, trypsin-resistant compartments in target T cells. This massive virus internalization requires Env-CD4 receptor interactions but is resistant to inhibition by patient-derived neutralizing antisera that inhibit homologous cell-free virus. Deleting the Env cytoplasmic tail does not abrogate VS-mediated transfer, but it renders the VS sensitive to neutralizing antibodies, suggesting that the tail limits exposure of VS-neutralizing epitopes on the surface of infected cells. Dynamic live imaging of the VS reveals that HIV-expressing cells are polarized and make sustained, Env-dependent contacts with target cells through uropod-like structures. The polarized T-cell morphology, Env-CD4 coordinated adhesion, and viral transfer from HIV-infected to uninfected cells suggest that VS allows HIV-1 to evade antibody neutralization and to disseminate efficiently. Future studies will discern to what extent this massive viral transfer contributes to productive infection or viral dissemination through the migration of virus-carrying T cells.
Stichworte
Sequence Deletion; CCR5/metabolism; Receptors; Membrane Fusion; Jurkat Cells; Immune Sera/immunology; Humans; HIV-1/immunology; Green Fluorescent Proteins/metabolism; Green Fluorescent Proteins/analysis; Cytoskeleton/metabolism; Cell Adhesion; CD4-Positive T-Lymphocytes/virology; Antibodies; Viral/immunology; CD4-Positive T-Lymphocytes/immunology; Virus Internalization; env Gene Products; Human Immunodeficiency Virus/genetics; env Gene Products; Human Immunodeficiency Virus/metabolism; gag Gene Products; Human Immunodeficiency Virus/analysis; gag Gene Products; Human Immunodeficiency Virus/metabolism
Erscheinungsjahr
2007
Zeitschriftentitel
Journal of virology
Band
81
Ausgabe
22
Seite(n)
12582-12595
ISSN
0022-538X
Page URI
https://pub.uni-bielefeld.de/record/2576819

Zitieren

Chen P, Hübner W, Spinelli MA, Chen BK. Predominant mode of human immunodeficiency virus transfer between T cells is mediated by sustained Env-dependent neutralization-resistant virological synapses. Journal of virology. 2007;81(22):12582-12595.
Chen, P., Hübner, W., Spinelli, M. A., & Chen, B. K. (2007). Predominant mode of human immunodeficiency virus transfer between T cells is mediated by sustained Env-dependent neutralization-resistant virological synapses. Journal of virology, 81(22), 12582-12595. doi:10.1128/JVI.00381-07
Chen, P., Hübner, W., Spinelli, M. A., and Chen, B. K. (2007). Predominant mode of human immunodeficiency virus transfer between T cells is mediated by sustained Env-dependent neutralization-resistant virological synapses. Journal of virology 81, 12582-12595.
Chen, P., et al., 2007. Predominant mode of human immunodeficiency virus transfer between T cells is mediated by sustained Env-dependent neutralization-resistant virological synapses. Journal of virology, 81(22), p 12582-12595.
P. Chen, et al., “Predominant mode of human immunodeficiency virus transfer between T cells is mediated by sustained Env-dependent neutralization-resistant virological synapses”, Journal of virology, vol. 81, 2007, pp. 12582-12595.
Chen, P., Hübner, W., Spinelli, M.A., Chen, B.K.: Predominant mode of human immunodeficiency virus transfer between T cells is mediated by sustained Env-dependent neutralization-resistant virological synapses. Journal of virology. 81, 12582-12595 (2007).
Chen, Ping, Hübner, Wolfgang, Spinelli, Matthew A, and Chen, Benjamin K. “Predominant mode of human immunodeficiency virus transfer between T cells is mediated by sustained Env-dependent neutralization-resistant virological synapses”. Journal of virology 81.22 (2007): 12582-12595.

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