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Down syndrome (DS) is caused by trisomy for chromosome 21 (T21). We generated two induced pluripotent stem cell (iPSC) lines from skin fibroblasts of two males with DS using Sendai virus delivery of OCT4, SOX2, KLF4, and c-MYC. Characterization of the two iPSC lines, UUIGPi013-A and UUIPGi014-A, showed that they are genetically stable with a 47,XY,+21 karyotype. Both lines displayed expression of pluripotency markers and trilineage differentiation capacity. These two iPSC lines provide a useful resource for DS modeling and pharmacological interventions.
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http://dx.doi.org/10.1016/j.scr.2020.102081 | DOI Listing |
J Vis Exp
August 2025
Department of Oncology, Division of Pediatric Oncology and Institute for Cell Engineering, The Johns Hopkins University School of Medicine;
Human cord blood (CB) myeloid progenitor reprogramming to a high-fidelity human induced pluripotent stem cell (hiPSC) state can be achieved using non-integrating episomal vectors and stromal signals. These conventional, primed CB-hiPSC lines can subsequently be chemically reverted with high efficiencies to a blastomere-like Tankyrase/PARP Inhibitor-Regulated Naive Stem Cell (TIRN-SC) state with functional totipotency. PARP-regulated TIRN-SCs are human stem cells with high epigenetic plasticity, stable epigenomic imprints, and have greater differentiation potency than conventional, lineage-primed hiPSCs.
View Article and Find Full Text PDFCancer cachexia is a highly debilitating clinical syndrome of involuntary body mass loss featuring profound muscle wasting leading to high mortality. Notably, cardiac wasting is prominent in cancer patients and cancer survivors. Cachexia studies present significant challenges due to the absence of human models and mainly short-term animal studies.
View Article and Find Full Text PDFiScience
September 2025
Department of Developmental Neurosciences, Zayed Centre for Research into Rare Disease in Children, Great Ormond Street Institute of Child Health, University College London, London, UK.
Manganese (Mn) is an essential trace metal required for normal biological function, yet it also poses neurotoxic risks when dysregulated. Maintaining proper intracellular and extracellular Mn levels is critical, as Mn imbalance has been implicated in a spectrum of human diseases-including inherited Mn transport disorders, acquired manganism, and more prevalent neurodegenerative diseases such as Parkinson's and Alzheimer's disease. Despite these associations, the cellular mechanisms driving Mn-induced neuropathology remain poorly understood.
View Article and Find Full Text PDFThe ATP-binding cassette subfamily A member 3 (ABCA3) protein on the limiting membrane of lamellar bodies in alveolar type 2 (AT2) cells transports phospholipids required for pulmonary surfactant assembly. ABCA3 deficiency results from biallelic pathogenic variants in and causes progressive neonatal respiratory failure or childhood interstitial lung disease (chILD). Supportive/compassionate care or lung transplantation are the only current definitive treatments for ABCA3 deficiency and progressive respiratory failure.
View Article and Find Full Text PDFStem Cell Res
August 2025
Université Paris-Saclay, Université d'Evry, Inserm, IStem, UMR861, Corbeil-Essonnes, France; IStem, CECS, Corbeil-Essonnes, France. Electronic address:
Glycogen storage disease type II (GSDII), or Pompe disease, is a rare autosomal recessive metabolic disorder characterized by the deficiency of the lysosomal enzyme acid alpha-glucosidase (GAA). GAA deficiency results in the progressive accumulation of glycogen in cardiac and skeletal muscle tissues, leading to cellular dysfunction and clinical manifestations, including muscle weakness, respiratory difficulties, and cardiomyopathy. In this study, we report the derivation of three induced pluripotent stem cell (iPSC) lines from peripheral blood mononuclear cells of GSDII patients.
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