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Protein paves the way for correct stem cell differentiation
Date:2/7/2013

Timing of gene activity is not only crucial during development, but has to be maintained throughout the lifespan of any cell. Some genes are active at a certain times, but inactive at other times.. Here PRC1 comes into play. PRC1 is dynamically recruited to and dissociated from genes according to the needs of our organism. When cancer strikes, this tight regulation of gene activity is often lost and the cells are locked in a less differentiated stage. This loss of differentiation and the accumulation of other mutations allow the cancer cells to undergo indefinite self-renewal through endless cell divisions, an ability that normal differentiated cells are prohibited from through tight gene regulation.

"Given the emerging relationship between cancer and stem cells, our findings may implicate that an aberrant activity of Fbxl10 can disturb PRC function and promote a lack of differentiation in our cells. This makes it worth studying whether blocking the function of Fbxl10 could be a strategy for tumour therapy", says Xudong Wu.

And that is exactly what the researchers want to try. In collaboration with the biotech company EpiTherapeutics, the researchers want to develop inhibitors to Fbxl10 as a potential novel therapy for cancer.

The results are published in the journal Molecular Cell on February 7, 2013: Wu et al.: Fbxl10/Kdm2b Recruits Polycomb Repressive Complex 1 to CpG Islands and Regulates H2A Ubiquitylation.


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Contact: Katrine Sonne-Hansen
katrine.sonne@bric.ku.dk
(45) 35-32-56-48
University of Copenhagen
Source:Eurekalert  

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