New Method to Produce Pluripotent Stem Cells- quicker and more efficiently.

 

Illustration of mRNA transcription, an overview

Image via Wikipedia

 

Dr. Derrick J. Rossi (Children’s Hospital Boston) along with a team of researchers from Children’s, Harvard, MIT, and Boston University, published  results in Cell demonstrating that skin cells can be reprogrammed into stem cells that seem virtually identical to embryonic ones.  These cells can also be used to develop transplant organs. While very exciting, the issue is that we have found that iPS (induced Pluripotent Stem) cells are not totally identical to embryonic ones; the cells seem to retain some memory of their tissue of origin.

Instead of using viri to manipulate the cell back to its embryonic capabilities, messenger RNA (mRNA) was inserted to effect the conversion; an interferon inhibitor was also employed.  The mRNA are involved in transcription (the formation of RNA from the DNA template) and translation (the formation of proteins); these conversions occurs in ribosomes among the cytoplasm.  In this case, the mRNA are involved in the translation of four key proteins (genes) that reprogram the cells into the iPS state.  The time frame involved is about 17 days from start to finish (about ½ the time for the viral method) and this process produces some 50-100 times more iPS cells.

Studies were done to see if differences between these iPS and embryonic cells would be easily manifested.  However, none were readily found.  In addition, the cells have been converted into cardiomyocetes (heart muscle cells) from their stem cell state.

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About RAAckerman@Cerebrations.biz

A polymath whose interests span chemical engineering, medicine, biotechnology, business, management, among other areas. Among my inventions/developments: dialyzer, dialysate, neurosurgical drill, respiratory inspirometer, colon electrolyte lavages, urinary catheters, cardiac catheters, water reuse systems, drinking water system, ammonia degrading microbes, toxic chemical reduction via microbes, onsite waste water treatment, electronic health care information systems, bookkeeping and accounting programs, among others.
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