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Globally altered epigenetic landscape and lagging osteogenic differentiation in H3.3-G34W-mutant giant cell tumor of bone

2020-05-27 oncology Title + abstract only
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The neoplastic stromal cells of giant cell tumor of bone (GCTB) carry a mutation in H3F3A, leading to a mutant histone variant, H3.3-G34W, as a sole recurrent genetic alteration. We show that in patient-derived stromal cells H3.3-G34W is incorporated into the chromatin and associates with massive epigenetic alterations on the DNA methylation, chromatin accessibility and histone modification level that can be partially recapitulated in an orthogonal cell line system by the introduction of H3.3-G3...

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