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Related Concept Videos

Induced Pluripotent Stem Cells01:06

Induced Pluripotent Stem Cells

Stem cells are undifferentiated cells that divide and produce different cell types. Ordinarily, cells that have differentiated into a specific cell type are terminally differentiated; however, scientists have found a way to reprogram these mature cells so that they dedifferentiate and return to an unspecialized, proliferative state. These cells are pluripotent like embryonic stem cells—able to produce all cell types—and are called induced pluripotent stem cells (iPSCs).
Somatic cells are...

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Efficient iPS Cell Generation from Blood Using Episomes and HDAC Inhibitors
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A more efficient method to generate integration-free human iPS cells.

Keisuke Okita1, Yasuko Matsumura, Yoshiko Sato

  • 1Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan. okita@cira.kyoto-u.ac.jp

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|April 5, 2011
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Summary
This summary is machine-generated.

Researchers developed a straightforward method to create human induced pluripotent stem cells (iPSCs) using p53 suppression and L-Myc. These transgene-free iPSCs, derived from diverse donors, show potential for future cell therapies.

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Generation of Integration-free Induced Pluripotent Stem Cells from Human Peripheral Blood Mononuclear Cells Using Episomal Vectors
09:45

Generation of Integration-free Induced Pluripotent Stem Cells from Human Peripheral Blood Mononuclear Cells Using Episomal Vectors

Published on: January 1, 2017

Area of Science:

  • Stem cell biology
  • Regenerative medicine
  • Molecular biology

Background:

  • Induced pluripotent stem cells (iPSCs) hold promise for regenerative medicine.
  • Generating safe and efficient iPSCs for clinical applications remains a challenge.
  • Existing methods often involve genetic integration or lack donor diversity.

Purpose of the Study:

  • To develop a simple and efficient method for generating transgene-free human induced pluripotent stem cells (iPSCs).
  • To utilize specific genetic manipulations (p53 suppression and L-Myc) for enhanced iPSC generation.
  • To produce iPSCs from diverse donors, including those with specific human leukocyte antigen (HLA) profiles, for broader therapeutic potential.

Main Methods:

  • Employing episomal plasmid vectors for reprogramming.
  • Utilizing p53 suppression to facilitate cellular reprogramming.
  • Incorporating nontransforming L-Myc to enhance reprogramming efficiency without oncogenic transformation.
  • Generating iPSCs from multiple human donors, including HLA-homozygous individuals.

Main Results:

  • Successfully generated human induced pluripotent stem cells (iPSCs) using the described method.
  • The majority of generated iPSCs were integrated transgene-free, reducing risks associated with genetic modification.
  • iPSCs were derived from donors with specific HLA types, matching a significant portion of the Japanese population.
  • Demonstrated the feasibility of generating iPSCs suitable for potential allogeneic transplantation.

Conclusions:

  • A simple and effective method for generating transgene-free human iPSCs has been established.
  • The method utilizes p53 suppression and L-Myc, offering a safer reprogramming strategy.
  • The generated iPSCs, particularly from HLA-homozygous donors, are promising for future autologous and allogeneic stem cell therapies.