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DNA structure disruptions, not just mutations, can cause blood cancers by impairing tumor suppressor genes, according to a 2025 study.
A 2025 study presented at the American Society of Hematology conference reveals that disruptions in DNA’s 3D structure, particularly the breakdown of loops connecting gene regulators to targets, can lead to blood cancers like lymphoma even without major genetic mutations.
Researchers found that weakened DNA looping due to reduced levels of architectural proteins such as SMC3 and CTCF impairs tumor suppressor genes and immune cell development.
Using AI to analyze genomic data, scientists identified early structural changes preceding cancer onset, introducing the concept of "architectural tumor suppression."
Lower SMC3 levels in diffuse large B-cell lymphoma patients correlated with worse outcomes, suggesting genome architecture may serve as a future biomarker.
The findings highlight DNA’s physical organization as a key factor in cancer prevention, opening pathways for new diagnostics and therapies focused on restoring proper DNA folding.
Las alteraciones de la estructura del ADN, no solo las mutaciones, pueden causar cánceres de sangre al afectar los genes supresores de tumores, según un estudio de 2025.