Are Stem Cells The Cure To Baldness?
By raymumme
January 28, 2014
Brett Smith for redOrbit.com Your Universe Online
While a Chinese cream may not have cured George Costanzas baldness in a classic Seinfeld episode, stem cell research from scientists at the University of Pennsylvania has shown the potential for regenerating hair follicles which could lead to relief for hair-challenged men everywhere.
According to a new report published in the journal Nature Communications, the Pennsylvania researchers have developed a groundbreaking method for converting adult cells into epithelial stem cells (EpSCs). Similar previous efforts have failed to generate an adequate number of hair-follicle-generating stem cells.
In the study, epithelial stem cells were inserted into immunocompromised mice. The stem cells regenerated the various cell types for human skin and hair follicles, and provided structurally identifiable hair shafts, raising the possibility of hair regeneration in humans.
The study team began with human skin cells referred to as dermal fibroblasts. By incorporating three genes, they modified those cells into induced pluripotent stem cells (iPSCs), which have the capacity to differentiate into any cell types in the human body. Next, they modified the iPS cells into epithelial stem cells, commonly located at the base of hair follicles.
Starting with procedures other research groups had worked out to transfer iPSCs into skin cells, Xus team figured out that by carefully manipulating the timing of the cell growth factors, they could drive the iPSCs to produce large quantities of epithelial stem cells. This method was able to turn more than 25 percent of the iPSCs into epithelial stem cells within 18 days. Those cells were then purified based on the proteins they showed on their surfaces.
Comparison of the engineered cells with epithelial stem tissue obtained from hair follicles revealed the team succeeded in making the cells they set out to produce. After mixing all those cells with mouse follicular inductive dermal cells and attaching them onto the pores and skin of immunodeficient mice, the team was able to produce efficient outer layers of human skin tissue and follicles structurally similar to those generated by human hair.
This is the first time anyone has made scalable amounts of epithelial stem cells that are capable of generating the epithelial component of hair follicles, said study author Dr. Xiaowei George Xu, associate professor of pathology and laboratory medicine and dermatology at the university. He added that these cells could be used for healing, cosmetics and hair regeneration.
Xu cautioned that iPSC-derived epithelial stem cells are not yet ready for human subjects.
Originally posted here:
Are Stem Cells The Cure To Baldness?
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