Ribosomal DNA and the Nucleolus as Keystones of Nuclear Architecture, Organization, and Function.
Ribosomal DNA and the Nucleolus as Keystones of Nuclear Architecture, Organization, and Function.
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DOI:
10.1016/j.tig.2019.07.011
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发表时间:
2019-10
期刊:
影响因子:
--
通讯作者:
Lemos B
中科院分区:
文献类型:
--
作者:
Cerqueira AV;Lemos B
The multicopy rDNA array gives origin to the nucleolus, a large non-membrane bound organelle that occupies a substantial space of the cell nucleus. The rDNA/nucleolus have emerged as a coordinating hub in which seemingly disparate cellular functions converge and from which a variety of cellular and organismal phenotypes emerge. However, the role of the nucleolus as a determinant and organizer of nuclear architecture and other epigenetic states of the genome has not been well understood. Here, we discuss the role of the rDNA and the nucleolus in nuclear organization and function; from nucleolus associated domains, to the regulation of imprinted loci and X chromosome inactivation, and rDNA contact maps that anchor and position the rDNA relative to the rest of the genome. Nucleolus influence on nuclear organization is bound to modulate diverse biological processes; from metabolism to cell proliferation, genome-wide gene expression, the maintenance of epigenetic states, and aging.
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10.1073/pnas.0603730103
发表时间:
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通讯作者:
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