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Creating 're-specified' stem cells for disease modeling

Date:
October 3, 2013
Source:
Boston Children's Hospital
Summary:
A team of researchers reports a new approach for turning induced pluripotent stem cells into hematopoietic stem and progenitor cells for in vivo disease modeling.

In a paper in Cell Stem Cell, a team led by researchers in the Boston Children's Hospital's Stem Cell Transplantation Program reports a new approach for turning induced pluripotent stem cells (iPSCs) into hematopoietic stem and progenitor cells for in vivo disease modeling.

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.

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.


Story Source:

The above story is based on materials provided by Boston Children's Hospital. Note: Materials may be edited for content and length.


Journal Reference:

  1. Sergei Doulatov, LindaT. Vo, StephanieS. Chou, PeterG. Kim, Natasha Arora, Hu Li, BrandonK. Hadland, IrwinD. Bernstein, JamesJ. Collins, LeonardI. Zon, GeorgeQ. Daley. Induction of Multipotential Hematopoietic Progenitors from Human Pluripotent Stem Cells via Respecification of Lineage-Restricted Precursors. Cell Stem Cell, 2013; 13 (4): 459 DOI: 10.1016/j.stem.2013.09.002

Cite This Page:

Boston Children's Hospital. "Creating 're-specified' stem cells for disease modeling." ScienceDaily. ScienceDaily, 3 October 2013. <www.sciencedaily.com/releases/2013/10/131003132256.htm>.
Boston Children's Hospital. (2013, October 3). Creating 're-specified' stem cells for disease modeling. ScienceDaily. Retrieved July 30, 2014 from www.sciencedaily.com/releases/2013/10/131003132256.htm
Boston Children's Hospital. "Creating 're-specified' stem cells for disease modeling." ScienceDaily. www.sciencedaily.com/releases/2013/10/131003132256.htm (accessed July 30, 2014).

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