3D chromosomal architecture in germinal center B cells and its alterations in lymphomagenesis.

3D chromosomal architecture in germinal center B cells and its alterations in lymphomagenesis.
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DOI:
10.1016/j.gde.2022.101915
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发表时间:
2022-06
影响因子:
4
通讯作者:
Melnick, Ari
Melnick, Ari
中科院分区:
生物学2区
文献类型:
--
作者:
Papin, Antonin;Cesarman, Ethel;Melnick, Ari

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在真核细胞中,基因组是三维(3D)组织的DNA相互作用动力学和拓扑结构的变化,调节基因表达和驱动细胞命运。在抗原刺激后,初始B细胞被激活并形成用于产生记忆B细胞和浆细胞的生发中心(GC)。因此,终末B细胞分化和相关的体液免疫应答需要大量但严格的3D DNA重组。在这里,我们回顾了GC形成过程中基因组重组的动态变化及其对淋巴瘤发生的影响,从核小体结构到高阶染色体组织。我们特别讨论了GC B细胞中3D DNA的确定架构师及其突变在B细胞淋巴瘤中的作用。
In eukaryotic cells, the genome is three dimensionally (3D) organized with DNA interaction dynamics and topology changes that regulate gene expression and drive cell fate. Upon antigen stimulation, naive B cells are activated and form germinal centers (GC) for the generation of memory B cells and plasma cells. Thereby, terminal B-cell differentiation and associated humoral immune response require massive but rigorous 3D DNA reorganization. Here, we review the dynamics of genome reorganization during GC formation and the impact of its alterations on lymphomagenesis from the nucleosome structure to the higher order chromosome organization. We particularly discuss the identified architects of 3D DNA in GC B cells and the role of their mutations in B-cell lymphomas.
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