scholarly journals Integrated Genomic Analysis of Diverse Induced Pluripotent Stem Cells from the Progenitor Cell Biology Consortium

2016 ◽  
Vol 7 (1) ◽  
pp. 110-125 ◽  
Author(s):  
Nathan Salomonis ◽  
Phillip J. Dexheimer ◽  
Larsson Omberg ◽  
Robin Schroll ◽  
Stacy Bush ◽  
...  
Circulation ◽  
2014 ◽  
Vol 130 (suppl_2) ◽  
Author(s):  
Yongyu Wang ◽  
Jiang Hu ◽  
Jiao jiao ◽  
Zhou Zhou ◽  
Eugene Y Chen ◽  
...  

Tissue-engineered blood vessels (TEBVs) hold great promise for replacement of damaged or defective vascular tissues in vascular disease therapies, such as coronary and peripheral bypass graft surgeries. However, it remains a great challenge to obtain sufficient numbers of functional smooth muscle cells (SMCs) in the practice of constructing patient-specific TEBVs. This study aimed to develop an efficient method to generate a large number of functional SMCs in a short term for constructing tissue-engineered vascular tissues. Human induced pluripotent stem cells (iPSCs) were established by integration-free episomal vector-based reprogramming of donor peripheral blood mononuclear cells (PBMCs). These established iPSCs expressed pluripotency markers and were demonstrated to be able to differentiate into all three germ layer cells. Cardiovascular progenitor cell (CVPC) intermediates were then promptly and efficiently induced and expanded in chemically defined medium. Vascular smooth muscle cells (SMCs) were further induced under differentiation condition, which expressed typical SMCs markers including smooth muscle α-actin (α-SMA), calponin and SM22α validated by quantitative real-time PCR and immunocytochemistry stain. Importantly, the derived SMCs showed functional properties, validated by contraction responsiveness to carbachol treatment, up-regulation of specific collagens gene expression under transforming growth factor β1 treatment and up-regulation of specific matrix metalloproteinases gene expression under cytokine stimuli. Future studies will be focused on using these functional SMCs to construct functional TEBVs on biomimetic scaffolds. Taken together, our study established a facile procedure to generate large amount of functional and safe SMCs for vascular regeneration, via establishment of donor-specific integration-free human iPSCs and directed differentiation through CVPC intermediates.


2010 ◽  
Vol 104 (07) ◽  
pp. 39-44 ◽  
Author(s):  
Qizhou Lian ◽  
Yenyen Chow ◽  
Miguel Esteban ◽  
Duanqing Pei ◽  
Hung-Fat Tse

SummaryRecent advances in stem cell biology have transformed the understanding of cell physiology and developmental biology such that it can now play a more prominent role in the clinical application of stem cell and regenerative medicine. Success in the generation of human induced pluripotent stem cells (iPS) as well as related emerging technology on the iPS platform provide great promise in the development of regenerative medicine. Human iPS cells show almost identical properties to human embryonic stem cells (ESC) in pluripotency, but avoid many of their limitations of use. In addition, investigations into reprogramming of somatic cells to pluripotent stem cells facilitate a deeper understanding of human stem cell biology. The iPS cell technology has offered a unique platform for studying the pathogenesis of human disease, pharmacological and toxicological testing, and cell-based therapy. Nevertheless, significant challenges remain to be overcome before the promise of human iPS cell technology can be realised.


2012 ◽  
Vol 26 (S1) ◽  
Author(s):  
Katja Schenke-Layland ◽  
Ali Nsair ◽  
Ben Van Handel ◽  
Hanna K Mikkola ◽  
Josh Goldhaber ◽  
...  

2021 ◽  
Vol 22 (24) ◽  
pp. 13674
Author(s):  
Giulia Paolini Sguazzi ◽  
Valentina Muto ◽  
Marco Tartaglia ◽  
Enrico Bertini ◽  
Claudia Compagnucci

To date, gene therapy has employed viral vectors to deliver therapeutic genes. However, recent progress in molecular and cell biology has revolutionized the field of stem cells and gene therapy. A few years ago, clinical trials started using stem cell replacement therapy, and the induced pluripotent stem cells (iPSCs) technology combined with CRISPR-Cas9 gene editing has launched a new era in gene therapy for the treatment of neurological disorders. Here, we summarize the latest findings in this research field and discuss their clinical applications, emphasizing the relevance of recent studies in the development of innovative stem cell and gene editing therapeutic approaches. Even though tumorigenicity and immunogenicity are existing hurdles, we report how recent progress has tackled them, making engineered stem cell transplantation therapy a realistic option.


2017 ◽  
Author(s):  
TCW Julia ◽  
Minghui Wang ◽  
Anna A. Pimenova ◽  
Kathryn R. Bowles ◽  
Brigham J. Hartley ◽  
...  

SUMMARYGrowing evidence implicates the importance of glia, particularly astrocytes, in neurological and psychiatric diseases. Here, we describe a rapid and robust method for the differentiation of highly pure populations of replicative astrocytes from human induced pluripotent stem cells (hiPSCs), via a neural progenitor cell (NPC) intermediate. Using this method, we generated hiPSC-derived astrocyte populations (hiPSC-astrocytes) from 42 NPC lines (derived from 30 individuals) with an average of ∼90% S100β-positive cells. Transcriptomic analysis demonstrated that the hiPSC-astrocytes are highly similar to primary human fetal astrocytes and characteristic of a non-reactive state. hiPSC-astrocytes respond to inflammatory stimulants, display phagocytic capacity and enhance microglial phagocytosis. hiPSC-astrocytes also possess spontaneous calcium transient activity. Our novel protocol is a reproducible, straightforward (single media) and rapid (<30 days) method to generate homogenous populations of hiPSC-astrocytes that can be used for neuron-astrocyte and microglia-astrocyte co-cultures for the study of neuropsychiatric disorders.ABBREVIATIONShiPSChuman induced pluripotent stem cellNPCneural progenitor cell


Author(s):  
Patrick McMinn ◽  
David J. Guckenberger ◽  
David J. Beebe

Over the past decade, induced pluripotent stem cells (iPSCs) have become a major focus of stem cell and developmental biology research, offering researchers a clinically relevant source of cells that are amenable to genetic engineering approaches. Though stem cells are promising for both research and commercial endeavors, iPSC-based assays require tedious protocols that include complex treatments, expensive reagents, and specialized equipment that limit their integration into academic curricula and cell biology research groups. Expanding on existing Kit-On-A-Lid-Assay (KOALA) technologies, we have developed a self-contained, injection molded, pipette-less iPSC culture and differentiation platform that significantly reduces associated costs and labor of stem cell maintenance and differentiation. The KOALA kit offers users the full range of iPSC culture necessities, including cell cryopreservation, media exchanges, differentiation, endpoint analysis, and a new capability, cell passaging. Using the KOALA kit, we were able to culture ~20,000 iPSCs per microchannel for at least 7 days, while maintaining stable expression of stemness markers (SSEA4 and Oct4) and normal iPSC phenotype. We also adapted protocols for differentiating iPSCs into neuroepithelial cells, cardiomyocytes, and definitive endodermal cells, a cell type from each germ layer of human development.


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