Centre de Recherche en Cancérologie Nantes-Angers, INSERM U892, Equipe Apoptose et Progression Tumorale, Equipe labellisée Ligue Nationale Contre le Cancer, 8 Quai Moncousu, BP 7021, 44007 Nantes, France.
Mol Oncol. 2013 Jun;7(3):452-63. doi: 10.1016/j.molonc.2012.11.004. Epub 2012 Dec 21.
The NY-ESO1 gene is a cancer/testis antigen considered to be suitable target for the immunotherapy of human malignancies. Despite the identification of the epigenetical silencing of the NY-ESO1 gene in a large variety of tumors, the molecular mechanism involved in this phenomenon is not fully elucidated. In two non epithelial cancers (glioma and mesothelioma), we found that the epigenetic regulation of the NY-ESO1 gene requires the sequential recruitment of the HDAC1-mSin3a-NCOR, Dnmt3b-HDAC1-Egr1 and Dnmt1-PCNA-UHRF1-G9a complexes. Thus, our data illustrate the orchestration of a sequential epigenetic mechanism including the histone deacetylation and methylation, and the DNA methylation processes.
NY-ESO1 基因是一种癌症/睾丸抗原,被认为是人类恶性肿瘤免疫治疗的合适靶点。尽管已经鉴定出 NY-ESO1 基因在多种肿瘤中的表观遗传沉默,但这一现象涉及的分子机制尚未完全阐明。在两种非上皮性癌症(神经胶质瘤和间皮瘤)中,我们发现 NY-ESO1 基因的表观遗传调控需要 HDAC1-mSin3a-NCOR、Dnmt3b-HDAC1-Egr1 和 Dnmt1-PCNA-UHRF1-G9a 复合物的顺序募集。因此,我们的数据说明了包括组蛋白去乙酰化和甲基化以及 DNA 甲基化过程在内的顺序性表观遗传机制的协调。