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Single-cell RNA sequencing data from hiPSC disease modeling of Loeys-Dietz Syndrome (LDS)

ABSTRACT: For in vitro disease modeling of LDS, we used healthy donor cells (TGFBR1+/+), and generated heterozygote (TGFBR1A230T/+), and homozygote (TGFBR1A230T/A230T) knock-in clones using CRISPR-Cas9 gene editing. We also generated hiPSC from peripheral blood mononuclear cells harvested from an LDS patient, and corrected the mutation in the patient-derived hiPSC. To address the lineage-specific effects of TGFBR1A230T, and SMAD3c.652delA/+, hiPSC were differentiated into cardiovascular progenitor cell-derived smooth muscle cells (CPC-SMC), and neural crest stem cell-derived smooth muscle cells (NCSC-SMC) using in vitro differentiation protocols. We performed large-scale single cell profiling of the resulting CPC-SMC and NCSC-SMC.

ORGANISM(S): Homo sapiens

PROVIDER: GSE175647 | GEO | 2021/08/04

REPOSITORIES: GEO

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Project description:Background and purposeLoeys-Dietz syndrome (LDS) is a recently described entity that has the triad of arterial tortuosity and aneurysms, hypertelorism, and bifid uvula or cleft palate. Its neuroradiologic manifestations have not been well delineated. We sought to describe the neuroradiologic features of LDS and to assess the manifestations that would warrant follow-up imaging.Materials and methodsTwo neuroradiologists retrospectively reviewed CT angiography (CTA), MR imaging, and plain film studies related to the head and neck in 25 patients ranging from 1 to 55 years of age, all of whom had positive genetic testing and clinical characteristics of LDS. Arterial tortuosity was evaluated by subjective assessment of 2D and 3D volumetric CTA and MR angiography data. Craniosynostosis and spinal manifestations were assessed by using plain films and CT images. MR images mostly of the head were reviewed for associated findings such as hydrocephalus, Chiari malformation, etc. Clinical manifestations were collated from the electronic patient record.ResultsAll patients had extreme arterial tortuosity, which is characteristic of this syndrome. Thirteen patients had scoliosis, 12 had craniosynostosis, 8 had intracranial aneurysms, 6 had spinal instability, 3 had dissections of the carotid and vertebrobasilar arteries, 3 had hydrocephalus, 4 had dural ectasia, 2 had a Chiari malformation, and 1 had intracranial hemorrhage as a complication of vascular dissection.ConclusionsSignificant neuroradiologic manifestations are associated with LDS, predominantly arterial tortuosity. Most of the patients in this series were young and, therefore, may require serial CTA monitoring for development of intra- and extracranial dissections and aneurysms, on the basis of the fact that most of the patients with pseudoaneurysms and dissection were older at the time of imaging. Other findings of LDS such as craniosynostosis, Chiari malformation, and spinal instability may also need to be addressed.

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Single-cell RNA sequencing data from hiPSC disease modeling of Loeys-Dietz Syndrome (LDS)

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