Human transferrin receptor triggers an alternative Tacaribe virus internalization pathway
Tacaribe virus (TCRV) entry occurs by receptor-mediated endocytosis. To explore the entry mechanism used by TCRV, the inhibitory effects of drugs and dominant negative (DN) constructions affecting the main endocytic pathways were analyzed. In cells lacking the human transferrin receptor (hTfR), comp...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_03048608_v161_n2_p353_Roldan |
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todo:paper_03048608_v161_n2_p353_Roldan2023-10-03T15:21:01Z Human transferrin receptor triggers an alternative Tacaribe virus internalization pathway Roldán, J.S. Martínez, M.G. Forlenza, M.B. Whittaker, G.R. Candurra, N.A. CD71 antigen cholesterol dynamin leukocyte antigen transferrin receptor animal CHO cell line Cricetulus host pathogen interaction human metabolism New World arenavirus pH physiology virus entry Animals Antigens, CD Arenaviruses, New World CHO Cells Cholesterol Cricetulus Dynamins Host-Pathogen Interactions Humans Hydrogen-Ion Concentration Receptors, Transferrin Virus Internalization Tacaribe virus (TCRV) entry occurs by receptor-mediated endocytosis. To explore the entry mechanism used by TCRV, the inhibitory effects of drugs and dominant negative (DN) constructions affecting the main endocytic pathways were analyzed. In cells lacking the human transferrin receptor (hTfR), compounds and DN proteins that impair clathrin-mediated endocytosis were shown to reduce virus internalization without affecting virion binding. In contrast, in cells expressing the hTfR, compounds that affect clathrin-mediated endocytosis did not affect TCRV infection. Destabilization of cholesterol-rich plasma membrane microdomains by treatment with nystatin was not able to block virus entry in the presence of hTfR. However methyl-β-cyclodextrin, which extracts cholesterol from cell membranes, reduced virus internalization in cells expressing the hTfR. Inhibition of dynamin and neutralization of the pH of intracellular vesicles reduced virus internalization in all cell lines tested. Taken together, these results demonstrate that in cells expressing the hTfR, TCRV internalization depends on the presence of cholesterol, dynamin and acidic intracellular vesicles, while in the rest of the cell lines analyzed, clathrin-mediated endocytosis is the main TCRV entry pathway and, as expected, depends on dynamin and acidic intracellular vesicles. These results represent an important contribution to the characterization of the arenavirus replication cycle. © 2015, Springer-Verlag Wien. Fil:Martínez, M.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Forlenza, M.B. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Candurra, N.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03048608_v161_n2_p353_Roldan |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
CD71 antigen cholesterol dynamin leukocyte antigen transferrin receptor animal CHO cell line Cricetulus host pathogen interaction human metabolism New World arenavirus pH physiology virus entry Animals Antigens, CD Arenaviruses, New World CHO Cells Cholesterol Cricetulus Dynamins Host-Pathogen Interactions Humans Hydrogen-Ion Concentration Receptors, Transferrin Virus Internalization |
| spellingShingle |
CD71 antigen cholesterol dynamin leukocyte antigen transferrin receptor animal CHO cell line Cricetulus host pathogen interaction human metabolism New World arenavirus pH physiology virus entry Animals Antigens, CD Arenaviruses, New World CHO Cells Cholesterol Cricetulus Dynamins Host-Pathogen Interactions Humans Hydrogen-Ion Concentration Receptors, Transferrin Virus Internalization Roldán, J.S. Martínez, M.G. Forlenza, M.B. Whittaker, G.R. Candurra, N.A. Human transferrin receptor triggers an alternative Tacaribe virus internalization pathway |
| topic_facet |
CD71 antigen cholesterol dynamin leukocyte antigen transferrin receptor animal CHO cell line Cricetulus host pathogen interaction human metabolism New World arenavirus pH physiology virus entry Animals Antigens, CD Arenaviruses, New World CHO Cells Cholesterol Cricetulus Dynamins Host-Pathogen Interactions Humans Hydrogen-Ion Concentration Receptors, Transferrin Virus Internalization |
| description |
Tacaribe virus (TCRV) entry occurs by receptor-mediated endocytosis. To explore the entry mechanism used by TCRV, the inhibitory effects of drugs and dominant negative (DN) constructions affecting the main endocytic pathways were analyzed. In cells lacking the human transferrin receptor (hTfR), compounds and DN proteins that impair clathrin-mediated endocytosis were shown to reduce virus internalization without affecting virion binding. In contrast, in cells expressing the hTfR, compounds that affect clathrin-mediated endocytosis did not affect TCRV infection. Destabilization of cholesterol-rich plasma membrane microdomains by treatment with nystatin was not able to block virus entry in the presence of hTfR. However methyl-β-cyclodextrin, which extracts cholesterol from cell membranes, reduced virus internalization in cells expressing the hTfR. Inhibition of dynamin and neutralization of the pH of intracellular vesicles reduced virus internalization in all cell lines tested. Taken together, these results demonstrate that in cells expressing the hTfR, TCRV internalization depends on the presence of cholesterol, dynamin and acidic intracellular vesicles, while in the rest of the cell lines analyzed, clathrin-mediated endocytosis is the main TCRV entry pathway and, as expected, depends on dynamin and acidic intracellular vesicles. These results represent an important contribution to the characterization of the arenavirus replication cycle. © 2015, Springer-Verlag Wien. |
| format |
JOUR |
| author |
Roldán, J.S. Martínez, M.G. Forlenza, M.B. Whittaker, G.R. Candurra, N.A. |
| author_facet |
Roldán, J.S. Martínez, M.G. Forlenza, M.B. Whittaker, G.R. Candurra, N.A. |
| author_sort |
Roldán, J.S. |
| title |
Human transferrin receptor triggers an alternative Tacaribe virus internalization pathway |
| title_short |
Human transferrin receptor triggers an alternative Tacaribe virus internalization pathway |
| title_full |
Human transferrin receptor triggers an alternative Tacaribe virus internalization pathway |
| title_fullStr |
Human transferrin receptor triggers an alternative Tacaribe virus internalization pathway |
| title_full_unstemmed |
Human transferrin receptor triggers an alternative Tacaribe virus internalization pathway |
| title_sort |
human transferrin receptor triggers an alternative tacaribe virus internalization pathway |
| url |
http://hdl.handle.net/20.500.12110/paper_03048608_v161_n2_p353_Roldan |
| work_keys_str_mv |
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| _version_ |
1807321481847242752 |