Differences in the internalization of self-inactivating vsvg-pseudotyped murine leukemia virus-based vectors in human and murine cells
| Autor: | Camila Miranda-Cárdenas, Francisco Aguayo, Oscar Leon, Mónica Acevedo, Ricardo Soto-Rifo, Francisco García-de Gracia |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
media_common.quotation_subject viruses Genetic Vectors Jurkat cells 3T3 cells Cell Line HeLa 03 medical and health sciences Transduction (genetics) Mice Viral Envelope Proteins Viral entry Transduction Genetic Virology Murine leukemia virus medicine Animals Humans Internalization media_common Membrane Glycoproteins biology fungi virus diseases Virus Internalization biochemical phenomena metabolism and nutrition biology.organism_classification Cell biology Leukemia Virus Murine 030104 developmental biology medicine.anatomical_structure Cell culture |
| Zdroj: | Journal Of Virological Methods Artículos CONICYT CONICYT Chile instacron:CONICYT |
| Popis: | Self-inactivating VSVG-pseudotyped murine leukemia virus (SIN-VSVG-MLV) has been widely used to generate stable cell lines and produce gene delivery vectors. Despite the broad cellular tropism of the VSVG-pseudotyped MLV, we observed differential viral transduction efficiency depending on the host cell type used. In order to determine the mechanism underlying these differences, we used a GFP-expressing SIN-VSVG-MLV and analyzed the major steps of viral transduction in different cell lines including human epithelial, T-lymphocytes, monocytes and murine fibroblast cells. We observed the better transduction efficiency in HeLa cells, which was 20-fold higher than THP-1 and NIH/3T3 cells. To quantify viral internalization, we determined genomic RNA content by quantifying the early reverse transcription product. Genomic RNA and transduction levels were correlated with HeLa cells showing the higher amount of early RT product followed by tsA201 cells, while NIH/3T3, Jurkat and THP-1 had the lowest amounts. Similar results were observed when the late reverse transcription product was analyzed. Reverse transcription efficiency was 66-85% in HeLa cells and about 30% in tsA201, NIH/3T3, Jurkat and THP-1 cells. Viral integration, determined by Alu-Nested-qPCR, was higher for HeLa and lowerst for Jurkat and THP-1 cells. Interestingly, we observed that viral entry was correlated with the cellular availability of clathrin-mediated endocytosis, which was higher in HeLa and tsA201 cells, potentially explaining the higher rates of SIN-VSVG-MLV transduction and early RT synthesis observed in these cell lines. In conclusion, the SIN-VSVG-MLV vector showed significantly different rates of infectivity depending on the host cell type, possibly due to differential rates of viral internalization. |
| Databáze: | OpenAIRE |
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