Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8425205 | Stem Cell Research | 2018 | 12 Pages |
Abstract
Recent studies have reported significant advances in the differentiation of human pluripotent stem cells to clinically relevant cell types such as the insulin producing beta-like cells and motor neurons. However, many of the current differentiation protocols lead to heterogeneous cell cultures containing cell types other than the targeted cell fate. Genetically modified human pluripotent stem cells reporting the expression of specific genes are of great value for differentiation protocol optimization and for the purification of relevant cell populations from heterogeneous cell cultures. Here we present the generation of human induced pluripotent stem cell (iPSC) lines with a GFP reporter inserted in the endogenous NKX6.1 locus. Characterization of the reporter lines demonstrated faithful GFP labelling of NKX6.1 expression during pancreas and motor neuron differentiation. Cell sorting and gene expression profiling by RNA sequencing revealed that NKX6.1-positive cells from pancreatic differentiations closely resemble human beta cells. Furthermore, functional characterization of the isolated cells demonstrated that glucose-stimulated insulin secretion is mainly confined to the NKX6.1-positive cells. We expect that the NKX6.1-GFP iPSC lines and the results presented here will contribute to the further refinement of differentiation protocols and characterization of hPSC-derived beta cells and motor neurons for disease modelling and cell replacement therapies.
Keywords
PBSNeomycin-resistance geneNK6 homeobox 1Reporter cell lineNkx6.1KRBHGSISPdx1hiPSCHpSCIMINEOHBSSFACSIBMXKClGFPHDR3-isobutyl-1-methylxanthinehESCPancreatic and duodenal homeobox 1Homology-directed repairDirected differentiationHuman induced pluripotent stem cellshuman embryonic stem cellsHuman pluripotent stem cellsfluorescence activated cell sortingPhosphate-buffered salineHank's balanced salt solutionGreen fluorescence proteinPotassium chlorideGlucose stimulated insulin secretion
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Authors
Shailesh Kumar Gupta, Agata Wesolowska-Andersen, Anna K. Ringgaard, Himjyot Jaiswal, Luyan Song, Benoit Hastoy, Camilla Ingvorsen, Amir Taheri-Ghahfarokhi, Björn Magnusson, Marcello Maresca, Rikke R. Jensen, Nicola L. Beer, Johannes J. Fels,