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Updated: May 28, 2026

CRISPR/Cas9 Gene Editing of Hematopoietic Stem and Progenitor Cells for Gene Therapy Applications
Published on: August 9, 2022
Hematopoietic stem cell expansion and gene therapy
Korashon Lynn Watts1, Jennifer Adair, Hans-Peter Kiem
1Fred Hutchinson Cancer Research Center, Seattle, Washington, USA.
Abstract:
Hematopoietic stem cell (HSC) gene therapy remains a highly attractive treatment option for many disorders, including hematologic conditions, immunodeficiencies including human immunodeficiency virus (HIV)/acquired immune deficiency syndrome (AIDS), and other genetic disorders such as lysosomal storage diseases. In this review, we discuss the successes, side-effects and limitations of current gene therapy protocols. In addition, we describe the opportunities presented by implementing ex vivo expansion of gene-modified HSC, as well as summarize the most promising ex vivo expansion techniques currently available. We conclude by discussing how some of the current limitations of HSC gene therapy could be overcome by combining novel HSC expansion strategies with gene therapy.
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