alexa DNA repair in mammalian cells: DNA double-strand break repair: how to fix a broken relationship.


Journal of Cancer Science & Therapy

Author(s): Pardo B, GmezGonzlez B, Aguilera A

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Abstract DNA double-strand breaks (DSBs) arise in cells from endogenous and exogenous attacks on the DNA backbone, but also as a direct consequence of replication failures. Proper repair of all these DSBs is essential for genome stability. Repair of broken chromosomes is a challenge for dividing cells that need to distribute equal genetic information to daughter cells. Consequently, eukaryotic organisms have evolved multi-potent and efficient mechanisms to repair DSBs that are primarily divided into two types of pathways: nonhomologous end joining (NHEJ) and homologous recombination (HR). Here we briefly describe how eukaryotic cells sense DSBs and trigger cell cycle arrest to allow repair, and we review the mechanisms of both NHEJ and HR pathways and the choice between them. (Part of a Multi-author Review). This article was published in Cell Mol Life Sci and referenced in Journal of Cancer Science & Therapy

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