SIX2-positive renal cells isolated from urine from a 51year old male of African origin bearing the CYP2D6 *4/*17 variant were reprogrammed by nucleofection of a combination of two episomal-based plasmids omitting pathway (TGFβ, MEK and GSK3β) inhibition. The induced pluripotent stem cells (iPSCs) were characterized by immunocytochemistry, embryoid body formation, DNA-fingerprinting and karyotype analysis. Comparative transcriptome analyses with human embryonic stem cell lines H1 and H9 revealed a Pearson correlation of 0.9243 and 0.9619 respectively.
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http://dx.doi.org/10.1016/j.scr.2017.10.004 | DOI Listing |
Cells
September 2023
Institute of Stem Cell Research and Regenerative Medicine, University Hospital Düsseldorf, Medical Faculty, Heinrich-Heine University Düsseldorf, 40225 Düsseldorf, Germany.
With a global increase in chronic kidney disease patients, alternatives to dialysis and organ transplantation are needed. Stem cell-based therapies could be one possibility to treat chronic kidney disease. Here, we used multipotent urine-derived renal progenitor cells (UdRPCs) to study nephrogenesis.
View Article and Find Full Text PDFStem Cell Res
September 2023
Institute for Stem Cell Research and Regenerative Medicine, Medical Faculty, Heinrich Heine University, 40225 Düsseldorf, Germany; University College London (UCL), EGA Institute for Women's Health, Zayed Centre for Research into Rare Diseases in Children (ZCR), 20 Guilford Street, London WC1N 1DZ, UK. Electronic address:
SIX2-positive urine derived renal progenitor cells were isolated from a male and female alpha1-antitrypsin deficiency (AATD) patients both harboring the homozygous PiZZ genotype. The cells were reprogrammed to generate two integration-free induced pluripotent stem cell (iPSC) lines by transfecting episomal-based plasmids expressing OCT4, SOX2, NANOG, c-MYC, KLF4 and LIN28. Pluripotency was confirmed by immunocytochemistry for associated markers and embryoid body-based differentiation into the three germ layers.
View Article and Find Full Text PDFInt J Mol Sci
June 2023
Institute for Stem Cell Research and Regenerative Medicine, Medical Faculty, Heinrich-Heine University Düsseldorf, 40225 Düsseldorf, Germany.
Podocytes are highly specialized cells that play a pivotal role in the blood filtration process in the glomeruli of the kidney, and their dysfunction leads to renal diseases. For this reason, the study and application of this cell type is of great importance in the field of regenerative medicine. Hypertension is mainly regulated by the renin-angiotensin-aldosterone system (RAAS), with its main mediator being angiotensin II (ANG II).
View Article and Find Full Text PDFJ Am Soc Nephrol
April 2023
Renal, Electrolyte, and Hypertension Division, Department of Medicine, University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania.
Significance Statement: Epigenetic changes have been proposed to mediate nephron endowment during development, a critical determinant of future renal disease development. Hydroxymethyl cytosine, an epigenetic modification important for gene regulation, is abundant in the human kidney, but its physiologic role and the role of DNA demethylase enzymes encoded by the Tet1 , Tet2 , or Tet3 , which mediate cytosine hydroxymethylation, are unclear. By genetically deleting Tet1 , Tet2 , or Tet3 in nephron progenitors in mice, the authors showed that combined Tet2 and Tet3 loss in nephron progenitors cause defective kidney development, leading to kidney failure and perinatal death.
View Article and Find Full Text PDFAging (Albany NY)
September 2022
Institute for Stem Cell Research and Regenerative Medicine, Medical Faculty, Heinrich-Heine- University Düsseldorf, Düsseldorf 40225, Germany.
The aging process is manifested by a multitude of inter-linked biological processes. These processes contribute to genomic instability, telomere attrition, epigenetic alterations, loss of proteostasis, de-regulated nutrient-sensing, mitochondrial dysfunction, cellular senescence, stem cell exhaustion, and altered intercellular communication. The mammalian ortholog of the yeast silent information regulator (Sir2) SIRT1 is a NAD+-dependent class III histone deacetylase and has been recognized to be involved in many of the forementioned processes.
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