Gene transfer into hematopoietic stem cells

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Abstract
The ability to reliably transfer genes into hematopoietic stem cells with long-term repopulating potential and to selectively express such genes would allow genetic therapy for diseases such as sickle cell anemia and immunologic deficiencies due to T-cell defects, including acquired immune deficiency syndrome (AIDS). Understanding the biology of the hematopoietic stem cell is a key element in realizing the full therapeutic potential of gene insertion strategies. Current techniques have efficiency rates of gene insertion of approximately 10% to 20% into murine stem cells and 1% to 5% into primate stem cells. Many challenges, some biologic and some logistic, remain before gene transfer protocols that are successful in the mouse model can be extended to humans.