High-efficiency gene transfer into normal and adenosine deaminase-deficient T lymphocytes is mediated by transduction on recombinant fibronectin fragments
| Autor: | Karen E. Pollok, David R. Williams, Helmut Hanenberg, Ikunoshin Kato, David J. Emanuel, Wendy L. Schroeder, Timothy W. Noblitt |
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| Rok vydání: | 1998 |
| Předmět: |
Adenosine Deaminase
CD3 Transgene Genetic enhancement T-Lymphocytes Immunology Genetic Vectors Lymphocyte Activation Microbiology Viral vector TCIRG1 Transduction (genetics) Retrovirus Virology medicine Humans Cells Cultured biology Gene Transfer Techniques Gene Therapy medicine.disease biology.organism_classification Molecular biology Peptide Fragments Recombinant Proteins Adenosine deaminase deficiency Fibronectins Retroviridae Insect Science biology.protein B7-1 Antigen |
| Zdroj: | Journal of virology. 72(6) |
| ISSN: | 0022-538X |
| Popis: | Primary human T lymphocytes are powerful targets for genetic modification, although the use of these targets in human gene therapy protocols has been hampered by low levels of transduction. We have shown previously that significant increases in the transduction of hematopoietic stem and progenitor cells with retroviral vectors can be obtained by the colocalization of the retrovirus and target cells on specific fibronectin (FN) adhesion domains (H. Hanenberg, X. L. Xiao, D. Dilloo, K. Hashino, I. Kato, and D. A. Williams, Nat. Med. 2:876–882, 1996). We studied the transfer of genes into primary T lymphocytes by using FN-assisted retroviral gene transfer. Activated T lymphocytes were infected for three consecutive days on the recombinant FN fragment CH-296 with a retroviral vector encoding the murine B7-1 protein. Transduced lymphocytes were analyzed for murine B7-1 expression, and it was found that under optimal conditions, 80 to 89% of the CD3 + lymphocytes were transduced. Gene transfer was predominantly augmented by the interaction between VLA-4 on the T lymphocytes and the FN adhesion site CS-1. Adenosine deaminase (ADA)-deficient primary T lymphocytes transduced on CH-296 with a retrovirus encoding murine ADA (mADA) exhibited levels of mADA activity severalfold higher than the levels of the endogenous human ADA protein observed in normal human T lymphocytes. Strikingly, the long-term expression of the transgene was dependent on the activation status of the lymphocytes. This approach will have important applications in human gene therapy protocols targeting primary T lymphocytes. |
| Databáze: | OpenAIRE |
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