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MLV-10A1 retrovirus pseudotype efficiently transduces primary human CD4+ T lymphocytes
M Gladow1, C Becker, T Blankenstein
1Max-Delbrück-Center for Molecular Medicine, Berlin, Germany.
The Journal of Gene Medicine
|February 24, 2001
Summary
The amphotropic murine leukemia virus 10A1 (MLV-10A1) vector efficiently transduces primary human CD4+ T lymphocytes, a crucial step for gene therapy. This MLV-10A1 pseudotype shows superior performance compared to other retroviral vectors.
Area of Science:
- * Gene therapy and retroviral vector development.
- * Immunology and T cell manipulation.
Background:
- * Previous studies demonstrated MLV-10A1 vector efficiency in transducing CD8+ T cells.
- * Effective transduction of CD4+ T lymphocytes is critical for gene therapeutic approaches like ADA and HIV treatment.
Purpose of the Study:
- * To evaluate the transduction efficiency of different retroviral vectors in human CD4+ T cells.
- * To compare MLV-10A1, A-MLV, and GaLV pseudotypes for CD4+ T cell transduction.
Main Methods:
- * Retroviral vectors encoding enhanced green fluorescent protein (EGFP) were used.
- * Vectors carried envelopes from MLV-10A1, A-MLV, and GaLV.
- * Transduction efficiency was analyzed in CD4+ T cell lines and primary lymphocytes using a RetroNectin-assisted protocol.
Main Results:
- * MLV-10A1 demonstrated the highest transduction efficiency in CD4+ T cell lines (up to 85% stable EGFP expression).
- * MLV-10A1 infected approximately 32% of primary human CD4+ T lymphocytes, outperforming GaLV (18%) and A-MLV (12%).
- * Superior MLV-10A1 efficiency correlates with longer pseudotype half-life and dual receptor usage (Pit1 and Pit2).
Conclusions:
- * MLV-10A1 is a highly effective vector for gene transfer into primary human CD4+ T lymphocytes.
- * The use of MLV-10A1 pseudotyped vectors facilitates the generation of sufficient gene-modified T lymphocytes for adoptive transfer.