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New Method of Converting iPSCs into Hematopoietic Stem Cells for Disease Modeling Identified

by Kathy Jones on October 4, 2013 at 8:24 PM
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 New Method of Converting iPSCs into Hematopoietic Stem Cells for Disease Modeling Identified

Researchers at Boston Children's Hospital have identified a new way through which induced pluripotent stem cells (iPSCs) can be converted into hematopoietic stem and progenitor cells for in vivo disease modeling, a new study published in Cell Stem Cell reveals.

With this strategy—which they call re-specification—the team, including Sergei Doulatov, PhD, and George Daley, MD, PhD, of Boston Children's, may have overcome technical barriers to generating blood disease-specific animal models from the thousands of iPSC cell lines now sitting in laboratory freezers around the world.

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The main advantage of the technique lies in the raw material. The research team started with iPSCs that had already been directed to grow into myeloid progenitors, which are more closely related to the desired blood progenitors than skin or other fully differentiated cell types commonly used in stem cell experiments.

The researchers then used a select set of transcription factors to turn back the molecular clock just a little on these committed myeloid cells, turning them into blood progenitors that readily engrafted and differentiated when transplanted into mice.

The re-specification technique could help generate the large number of engraftable cells needed to create animal models from iPSCs generated from human patients suffering a range of blood disorders, such as anemias, thalassemia or sickle cell disease.



Source: Eurekalert
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