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    Supercomputers reveal how X chromosomes fold, deactivate - Forum

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    Forum moderator: arya, dethalternate  
    Forum » Main » Science, Astronomy, Nature » Supercomputers reveal how X chromosomes fold, deactivate
    Supercomputers reveal how X chromosomes fold, deactivate
    ManuDate: Tuesday, 05-October-2021, 5:52 PM | Message # 1
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    Supercomputers reveal how X chromosomes fold, deactivate

    by Los Alamos National Laboratory

    Using supercomputer-driven dynamic modeling based on experimental data, researchers can now probe the process that turns off one X chromosome in female mammal embryos. This new capability is helping biologists understand the role of RNA and the chromosome's structure in the X inactivation process, leading to a deeper understanding of gene expression and opening new pathways to drug treatments for gene-based disorders and diseases.

    "This is the first time we've been able to model all the RNA spreading around the chromosome and shutting it down," said Anna Lappala, a visiting scientist at Los Alamos National Laboratory and a polymer physicist at Massachusetts General Hospital and the Harvard Department of Molecular Biology. Lappala is first author of the paper published Oct. 4 in the Proceedings of the National Academy of Sciences. "From experimental data alone, which is 2D and static, you don't have the resolution to see a whole chromosome at this level of detail. With this modeling, we can see the processes regulating gene expression, and the modeling is grounded in 2D experimental data from our collaborators at Massachusetts General Hospital and Harvard."

    The model—considered 4D because it shows motion, including time as the fourth dimension—runs on Los Alamos supercomputers. The model also incorporates experimental data from mice genomes obtained through a molecular method called 4DHiC. The combined molecular and computational methodology is a first.

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    https://phys.org/news....te.html
     
    Forum » Main » Science, Astronomy, Nature » Supercomputers reveal how X chromosomes fold, deactivate
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