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Related Experiment Video

Updated: Jun 3, 2026

Efficient iPS Cell Generation from Blood Using Episomes and HDAC Inhibitors

Efficient iPS Cell Generation from Blood Using Episomes and HDAC Inhibitors

Published on: October 28, 2014

Efficient feeder-free episomal reprogramming with small molecules.

Junying Yu¹, Kevin Fongching Chau, Maxim A Vodyanik

¹Advanced Development Programs, Cellular Dynamics International, Inc., Madison, Wisconsin, United States of America. jyu@cellulardynamics.com

|March 11, 2011

Summary

This summary is machine-generated.

Researchers developed a new method for creating footprint-free induced pluripotent stem cells (iPSCs) from human cells. This improved technique uses specific chemical compounds and feeder-free conditions for efficient iPSC generation, advancing cell therapy potential.

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Generation of Induced Pluripotent Stem Cells from Frozen Buffy Coats using Non-integrating Episomal Plasmids

Published on: June 5, 2015

Area of Science:

Stem Cell Biology
Regenerative Medicine
Epigenetics

Background:

Induced pluripotent stem cells (iPSCs) offer potential for cell transplantation therapies.
Current methods for generating footprint-free iPSCs have limitations, including inefficiency and reliance on feeder cells.
Previous work established footprint-free iPSC derivation using episomal vectors but lacked efficiency and required feeders.

Purpose of the Study:

To significantly enhance the efficiency of episomal reprogramming for footprint-free human iPSC generation.
To establish feeder-free reprogramming conditions using chemically defined media.
To enable routine derivation of clinical-grade footprint-free human iPSCs.

Main Methods:

Utilized a cocktail of small molecule inhibitors (PD0325901, CHIR99021, A-83-01, HA-100) and human leukemia inhibitory factor to boost episomal reprogramming efficiency.
Developed feeder-free reprogramming conditions employing chemically defined media supplemented with bFGF and N2B27, as well as mTeSR1.
Tested the protocol on human skin fibroblasts, adipose tissue-derived cells, and cord blood cells.

Main Results:

Achieved greatly improved efficiency in episomal reprogramming for footprint-free human iPSC derivation.
Successfully established feeder-free reprogramming conditions using chemically defined media.
Demonstrated routine derivation of footprint-free human iPSCs from multiple primary cell sources.

Conclusions:

The enhanced episomal reprogramming method significantly improves efficiency and enables feeder-free derivation of footprint-free human iPSCs.
This optimized protocol facilitates the routine production of clinical-grade human iPSCs.
The technology holds promise for advancing cell-based therapies and regenerative medicine.