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Study: MicroRNA cooperation mutes breast cancer oncogenes
Date:5/7/2013

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"The current study showed that two microRNAs enhanced only 3-to-6 times their natural expression could cooperate to regulate an oncogene that had previously only been affected by a microRNA enhanced by many, many times this amount," Liu says.

Specifically, the group's work shows that no one alone, but any two of the three microRNAs that regulate erbB2/erbB3 expression can affect the levels of proteins produced by the genes. These are miR-125a, miR-15b, and miR-205, which act in concert to regulate the expression of erbB2/erbB3, which are cancer-causing products of the oncogenes.

But in general, the group's novel technique could have implications far past erbB2/erbB3, allowing researchers and eventually doctors to mute the genes they want to mute without also dampening the expression of genes regulated by only one or only the other microRNA partner.


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Contact: Garth Sundem
garth.sundem@ucdenver.edu
University of Colorado Denver
Source:Eurekalert

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