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Related Concept Videos

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Stem cells are undifferentiated cells that divide and produce different types of cells. Ordinarily, cells that have differentiated into a specific cell type are post-mitotic—that is, they no longer divide. However, scientists have found a way to reprogram these mature cells so that they “de-differentiate” and return to an unspecialized, proliferative state. These cells are also pluripotent like embryonic stem cells—able to produce all cell types—and are therefore...
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Related Experiment Video

Updated: Sep 6, 2025

Generation of Integration-free Human Induced Pluripotent Stem Cells Using Hair-derived Keratinocytes
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Generating iPSCs with a High-Efficient, Non-Invasive Method-An Improved Way to Cultivate Keratinocytes from Plucked

Lisa S Wüstner1, Moritz Klingenstein1, Karl G Frey1

  • 1Institute of Neuroanatomy and Developmental Biology (INDB), Eberhard Karls Universität Tübingen, 72074 Tübingen, Germany.

Cells
|June 24, 2022
PubMed
Summary

This study enhances the non-invasive isolation of human hair follicle (HF) keratinocytes for induced pluripotent stem cells (iPSCs) generation. Optimized collection and culture methods improve efficiency and reproducibility for iPSC reprogramming.

Keywords:
hair follicle (HF)induced pluripotent stem cells (iPSCs)keratinocytesplucked human hair

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Area of Science:

  • Regenerative Medicine
  • Stem Cell Biology
  • Dermatology

Background:

  • Somatic cells like dermal fibroblasts, mesenchymal stem cells, and hair keratinocytes are suitable for induced pluripotency reprogramming.
  • Harvesting primary epithelial keratinocytes from human hair follicles (HFs) offers a non-invasive alternative to skin biopsies for fibroblast culture.
  • Existing protocols for generating hair keratinocytes require continuous revision to simplify collection, culturing, and reprogramming steps.

Purpose of the Study:

  • To improve the generation and handling of primary HF-derived keratinocytes for induced pluripotent stem cells (iPSCs) reprogramming.
  • To evaluate serum- and animal-origin-free media, supplements, and coating solutions for an enhanced keratinocyte isolation protocol.
  • To increase the efficiency, reliability, and inter-laboratory reproducibility of obtaining keratinocytes from plucked human hair for iPSC generation.

Main Methods:

  • Evaluation of various serum- and animal-origin-free media and supplements for keratinocyte culture.
  • Optimization of the collection and transportation steps for primary hair follicle keratinocytes.
  • Assessment of coating solutions to enhance cell handling and downstream applications like iPSC reprogramming.

Main Results:

  • Demonstrated the critical importance of speed and accuracy during the collection of hair follicles.
  • Identified optimal transportation media for preserving keratinocyte viability and quality.
  • Showcased improvements in generating and handling HF-derived keratinocytes using optimized protocols and defined media.

Conclusions:

  • The study presents an upgraded protocol for generating hair follicle keratinocytes, enhancing their utility for iPSC reprogramming.
  • The optimized methods lead to more reliable downstream experiments and improved inter-laboratory reproducibility.
  • This non-invasive approach facilitates easier and more efficient generation of donor-specific iPSCs from human hair keratinocytes.