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Adult Mouse Fat Cells Reprogrammed into Stem Cells
The cells, called "induced pluripotent stem cells" (iPS), are nearly identical to the naturally occurring pluripotent stems cells, such as embryonic stem cells, which are highly pluripotent, in short supply and their access restricted in the U.S.
The research appears in the journal Cell Transplantation.
The study's lead author, Dr. Paul J. Verma, said: "Induced pluripotent stem cells have revolutionized cell reprogramming. One challenge is to find the most appropriate cell for reprogramming. Our study demonstrated that both neural stem cells (NSCs) and adipose tissue-derived cells (ADCs) from adult mice expressed genetic pluripotency and could differentiate into the three germ layers, endoderm, mesoderm and ectoderm. The ADCs were the most amenable to reprogramming."
According to Dr. Verma, iPS cells have been shown to have many of the hallmarks of embryonic stem cells. Choosing which cells were best for reprogramming required looking at the ease of access and ease of derivation and growth of the cells in vitro. They concluded that it was likely that certain iPS cell lines will have a "higher propensity to differentiate into certain lineages (cell types)."
"This variation may be related to different levels of programming achieved. Many different cell types need to be investigated to generate many iPS lines for specific differentiation and different research purposes," added Dr. Verma.
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