Induced pluripotent stem cells as a tool for gaining new insights into Fanconi anemia
2012
Induced pluripotent stem cells (iPSC) hold significant promise for advancing biomedical research. In the case of monogenic diseases, patient-iPSC and their derivatives contain the disease-causing mutation, suggesting the possibility of recapitulating salient disease features in vitro. Fanconi anemia (FA) is the most common inherited bone marrow failure syndrome. The etiology of bone marrow failure in FA remains largely unclear, but limited studies on patient bone marrow cells indicate cell intrinsic defects as causative. We examined the feasibility of modeling FA in a system based on hematopoietic differentiation of patient-specific iPSC. An informative iPSC-based model is predicated on the ability to derive disease-specific (uncorrected) patient iPSC that contain the disease-causing mutation, are pluripotent, maintain a normal karyotype and are capable of hematopoietic differentiation. Careful analysis of hematopoietic differentiation of such iPSC holds the promise of uncovering new insights into bone marrow failure and may enable high-throughput screening with the goal of identifying compounds that ameliorate hematopoietic failure. Ultimately, genetic correction, molecular characterization and successful engraftment of iPSC-derived cells may provide an attractive alternative to current hematopoietic stem cell-targeted gene therapy in some monogenic diseases, including FA.
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