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Making enough red blood cells
Date:6/1/2010

, mice without MiR144 or MiR451 can just about produce enough red blood cells, but if you challenge them, by chemically inducing anaemia, most of them don't survive, because in those conditions you just can't live with inefficient red blood cell formation" O'Carroll explains.

O'Carroll and colleagues teamed up with Anton Enright's group at EMBL-EBI, and used a sophisticated bioinformatics approach to understand how these microRNAs act. They found that of the two, MiR451 probably plays a key role in the process, and that it likely does so not by switching a single gene on or off, but by fine-tuning a multitude of genes involved in red blood cell formation.

These microRNA molecules have been conserved throughout vertebrate evolution. They are known to also be important for red blood cell formation in fish, and are likely to play a similar role in humans too. Thus, investigating their function further could help to understand how our own red blood cells are formed, and how defects in that process may lead to conditions such as anaemia.


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Contact: Sonia Furtado
sonia.furtado@embl.de
European Molecular Biology Laboratory
Source:Eurekalert  

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