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bioRxiv · 10.1101/2020.02.23.962118

Successful Correction of ALD Patient-derived iPSCs Using CRISPR/Cas9

Jung, E. S.·Quan, Z.·Chang, M.-Y.·Kim, J. H.·Kim, S. H.·You, S.·Kim, D.-S.·Jang, J.·Lee, S.-H.·Kim, H. H.·Kang, H.-C.
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Abstract

X-linked adrenoleukodystrophy (ALD) caused by the ABCD1 mutation, is the most common inherited peroxisomal disease. It is characterized by three phenotypes: inflammatory cerebral demyelination, progressive myelopathy, and adrenal insufficiency, but there is no genotype-phenotype correlation. Hematopoietic stem cell transplantation can only be used in a few patients in the early phase of cerebral inflammation; therefore, most affected patients have no curative option. Previously, we reported the generation of an ALD patient-derived iPSC model and its differentiation to oligodendrocytes. In this study, we have performed the first genome editing of ALD patient-derived iPSCs using homology-directed repair (HDR). The mutation site, c.1534G>A [GenBank: NM_000033.4], was corrected by introducing ssODN and the CRISPR/Cas9 system. The cell line exhibited normal ALD protein expression following genome editing. We differentiated the intermediate oligodendrocytes from mutation-corrected iPSCs and the metabolic derangement of ALD tended to correct but was not statistically significant. Mutation-corrected iPSCs from ALD patient can be used in research into the pathophysiology of and therapeutics for ALD.

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Jung, E. S., Quan, Z., Chang, M.-Y., Kim, J. H., Kim, S. H., You, S., Kim, D.-S., Jang, J., Lee, S.-H., Kim, H. H., Kang, H.-C.. 2020-02-25. Successful Correction of ALD Patient-derived iPSCs Using CRISPR/Cas9. https://doi.org/10.1101/2020.02.23.962118

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