Dataset Information

Direct generation of induced pluripotent stem cells from human non-mobilized blood

ABSTRACT: The use of induced pluripotent stem cells (iPSCs) is an exciting frontier in the study and treatment of human diseases through the generation of specific cell types. Here we show the derivation of iPSCs from human non-mobilized peripheral blood (PB) and bone marrow (BM) mononuclear cells (MNCs) by retroviral transduction of OCT3/4, SOX2, KLF4 and c-MYC. The PB- and BM-derived iPSCs were indistinguishable from human embryonic stem cells (hESCs) with respect to morphology, expression of surface antigens and pluripotency-associated transcription factors, global gene expression profiles and differentiation potential in vitro and in vivo. Infected PB and BM MNCs gave rise to iPSCs in the presence of several cytokines, although transduction efficiencies were not high. We found that 5×105 PB MNCs, which corresponds to less than 1 ml of PB, was enough for the generation of several iPSC colonies. Generation of iPSCs from MNCs of non-mobilized PB, with its relative efficiency and ease of harvesting, could enable the therapeutic use of patient-specific pluripotent stem cells.

ORGANISM(S): Homo sapiens

PROVIDER: GSE20127 | GEO | 2010/06/01

SECONDARY ACCESSION(S): PRJNA124339

REPOSITORIES: GEO

ACCESS DATA

Similar Datasets

Project description:The generation of induced pluripotent stem cells (iPSCs) by the forced expression of defined transcription factors in somatic cells holds great promise for the future of regenerative medicine. However, due to a poor understanding of the initial reprogramming mechanism, it is difficult to control the efficiency and quality of the iPSCs. Here we show that Zscan4, expressed transiently in 2-cell embryos and embryonic stem cells (ESCs), efficiently produces iPSCs from mouse embryo fibroblasts when coexpressed with Klf4, Oct4, and Sox2. Unlike other factors, Zscan4 is required only for the first few days of iPSC formation. Microarray analysis revealed transient and early induction of preimplantation-specific genes in a Zscan4-dependent manner. Our work indicates that Zscan4 is a previously unidentified potent natural factor that facilitates the reprogramming process through the recapitulation of the early embryonic program. Secondary MEFs were isolated from E13.5 embryos, which were harvested by tetraploid complementation. Secondary MEFs were plated on gelatin-coated 6-well plates at a density of 1x105 cells/well in the complete ES medium. After 24 h incubation, secondary MEFs were fed with complete ES medium with or without Dox (1.5 ?g/ml) and with or without 200 nM Tmx. Culture medium was changed every day. Withdrawal of drugs (Dox or Tmx) was always followed by 1x washing by PBS before changing culture medium. We cotransfected MEFs with PB-Tet-MKOS and either a PB-Tet-Zscan4 or PB-Tet-DsRed (control). These cells were subsequently cultured in the standard iPSC generation condition (Dox+). Unexpectedly, we found that MEFs transfected with a PB-Tet-Zscan4 show consistently higher efficiency of iPSC generation than MEFs transfected with a PB-Tet-DsRed (control). All selected iPSCs expressed pluripotent marker genes according to RT-PCR analysis and were positive for ALP, Nanog, and SSEA-1. These iPSCs also formed embryoid bodies in hanging drops without LIF and could be differentiated in vitro to cells of all three germ layers. We are currently studying whether the presence of Zscan4 has the beneficial effects on iPSCs in terms of genome stability.

Dataset Information

Direct generation of induced pluripotent stem cells from human non-mobilized blood

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure