Kinetics of antibody-induced modulation of respiratory syncytial virus antigens in a human epithelial cell line
<p>Abstract</p> <p>Background</p> <p>The binding of viral-specific antibodies to cell-surface antigens usually results in down modulation of the antigen through redistribution of antigens into patches that subsequently may be internalized by endocytosis or may form caps...
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| Format: | Article |
| Language: | English |
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BMC
2007-07-01
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| Series: | Virology Journal |
| Online Access: | http://www.virologyj.com/content/4/1/68 |
| _version_ | 1819057813753692160 |
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| author | Gómez-Garcia Beatriz Valverde Laura E Tirado Rocio G Sarmiento Rosa E |
| author_facet | Gómez-Garcia Beatriz Valverde Laura E Tirado Rocio G Sarmiento Rosa E |
| author_sort | Gómez-Garcia Beatriz |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Background</p> <p>The binding of viral-specific antibodies to cell-surface antigens usually results in down modulation of the antigen through redistribution of antigens into patches that subsequently may be internalized by endocytosis or may form caps that can be expelled to the extracellular space. Here, by use of confocal-laser-scanning microscopy we investigated the kinetics of the modulation of respiratory syncytial virus (RSV) antigen by RSV-specific IgG. RSV-infected human epithelial cells (HEp-2) were incubated with anti-RSV polyclonal IgG and, at various incubation times, the RSV-cell-surface-antigen-antibody complexes (RSV Ag-Abs) and intracellular viral proteins were detected by indirect immunoflourescence.</p> <p>Results</p> <p>Interaction of anti-RSV polyclonal IgG with RSV HEp-2 infected cells induced relocalization and aggregation of viral glycoproteins in the plasma membrane formed patches that subsequently produced caps or were internalized through clathrin-mediated endocytosis participation. Moreover, the concentration of cell surface RSV Ag-Abs and intracellular viral proteins showed a time dependent cyclic variation and that anti-RSV IgG protected HEp-2 cells from viral-induced death.</p> <p>Conclusion</p> <p>The results from this study indicate that interaction between RSV cell surface proteins and specific viral antibodies alter the expression of viral antigens expressed on the cells surface and intracellular viral proteins; furthermore, interfere with viral induced destruction of the cell.</p> |
| first_indexed | 2024-12-21T13:45:17Z |
| format | Article |
| id | doaj.art-30470c10fa794df3847ddaa3728a046d |
| institution | Directory Open Access Journal |
| issn | 1743-422X |
| language | English |
| last_indexed | 2024-12-21T13:45:17Z |
| publishDate | 2007-07-01 |
| publisher | BMC |
| record_format | Article |
| series | Virology Journal |
| spelling | doaj.art-30470c10fa794df3847ddaa3728a046d2022-12-21T19:01:54ZengBMCVirology Journal1743-422X2007-07-01416810.1186/1743-422X-4-68Kinetics of antibody-induced modulation of respiratory syncytial virus antigens in a human epithelial cell lineGómez-Garcia BeatrizValverde Laura ETirado Rocio GSarmiento Rosa E<p>Abstract</p> <p>Background</p> <p>The binding of viral-specific antibodies to cell-surface antigens usually results in down modulation of the antigen through redistribution of antigens into patches that subsequently may be internalized by endocytosis or may form caps that can be expelled to the extracellular space. Here, by use of confocal-laser-scanning microscopy we investigated the kinetics of the modulation of respiratory syncytial virus (RSV) antigen by RSV-specific IgG. RSV-infected human epithelial cells (HEp-2) were incubated with anti-RSV polyclonal IgG and, at various incubation times, the RSV-cell-surface-antigen-antibody complexes (RSV Ag-Abs) and intracellular viral proteins were detected by indirect immunoflourescence.</p> <p>Results</p> <p>Interaction of anti-RSV polyclonal IgG with RSV HEp-2 infected cells induced relocalization and aggregation of viral glycoproteins in the plasma membrane formed patches that subsequently produced caps or were internalized through clathrin-mediated endocytosis participation. Moreover, the concentration of cell surface RSV Ag-Abs and intracellular viral proteins showed a time dependent cyclic variation and that anti-RSV IgG protected HEp-2 cells from viral-induced death.</p> <p>Conclusion</p> <p>The results from this study indicate that interaction between RSV cell surface proteins and specific viral antibodies alter the expression of viral antigens expressed on the cells surface and intracellular viral proteins; furthermore, interfere with viral induced destruction of the cell.</p>http://www.virologyj.com/content/4/1/68 |
| spellingShingle | Gómez-Garcia Beatriz Valverde Laura E Tirado Rocio G Sarmiento Rosa E Kinetics of antibody-induced modulation of respiratory syncytial virus antigens in a human epithelial cell line Virology Journal |
| title | Kinetics of antibody-induced modulation of respiratory syncytial virus antigens in a human epithelial cell line |
| title_full | Kinetics of antibody-induced modulation of respiratory syncytial virus antigens in a human epithelial cell line |
| title_fullStr | Kinetics of antibody-induced modulation of respiratory syncytial virus antigens in a human epithelial cell line |
| title_full_unstemmed | Kinetics of antibody-induced modulation of respiratory syncytial virus antigens in a human epithelial cell line |
| title_short | Kinetics of antibody-induced modulation of respiratory syncytial virus antigens in a human epithelial cell line |
| title_sort | kinetics of antibody induced modulation of respiratory syncytial virus antigens in a human epithelial cell line |
| url | http://www.virologyj.com/content/4/1/68 |
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