The loop extrusion hypothesis postulated that extrusion of DNA loops through cohesin rings organizes genomes. Recent findings suggest that cohesin itself is a molecular motor that extrudes DNA. This has important implications not only for the organization of interphase chromatin but also for other processes where cohesin plays vital roles.
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Cell Biology and Biophysics Unit, European Molecular Biology Laboratory (EMBL) , Heidelberg, Germany.
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Article Synopsis
- PAX2 is identified as an endometrial tumor suppressor frequently inactivated through a unique epigenetic mechanism, rather than promoter hypermethylation.
- In 80% of endometrial cancers, the loss of PAX2 is linked to transcriptional silencing, which alters chromatin features, contributing to cancer development.
- The research highlights new pathways for understanding endometrial cancer origins, potentially influencing future diagnosis and treatment approaches.
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