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How have induced pluripotent stem cells been used to model spinal muscular atrophy?

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Diagram showing the locations of neural stem cells in brain regions such as the hippocampus and ventricles, and hematopoietic stem cells in the bone marrow and blood, with labeled illustrations of the brain, spinal cord, circulatory system, and skeleton. — stem cell Stem cells of neural and hematopoietic origin have tremendous potential in the development of therapies for certain diseases, such as diabetes and Parkinson disease. Neural stem cells occur in the spinal cord and in specific regions of the brain, and hematopoietic stem cells occur in the blood and bone marrow.

Induced pluripotent stem cells (iPS cells) have proven to be a powerful tool for modeling spinal muscular atrophy in a laboratory setting.

In 2008, researchers successfully modeled this inherited neurological disease by isolating skin cells from a patient affected by the condition. These cells were then reprogrammed into iPS cells, which retained the patient's original disease genotype.1

By stimulating these reprogrammed cells to differentiate into motor neurons, scientists were able to observe functional insufficiencies that are characteristic of spinal muscular atrophy. This approach allows researchers to recapitulate the disease in vitro, providing a controlled environment to study the cellular changes associated with disease progression. Such models are essential for deepening the understanding of genetic diseases and facilitating the development of new, tailored therapeutic strategies.1