SUV3 Helicase and Mitochondrial Homeostasis.

SUV3 Helicase and Mitochondrial Homeostasis.
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DOI:
10.3390/ijms24119233
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发表时间:
2023-05-25
影响因子:
5.6
通讯作者:
--
中科院分区:
生物学2区
文献类型:
--
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SUV3 是一种高度保守的核编码解旋酶,定位于线粒体基质。在酵母中,SUV3 功能的丧失会导致第 1 组内含子转录物的积累,最终导致线粒体 DNA 的丢失,从而导致娇小的表型。然而,导致线粒体DNA丢失的机制仍不清楚。 SUV3 对于高等真核生物的生存至关重要,在小鼠中敲除 SUV3 会导致早期胚胎死亡。杂合子小鼠表现出一系列表型,包括过早衰老和癌症发病率增加。此外,源自 SUV3 杂合子或敲低培养细胞的细胞显示 mtDNA 减少。 SUV3 的瞬时下调导致 R 环的形成和双链 RNA 在线粒体中的积累。本综述旨在概述有关包含 SUV3 的复合物的当前知识,并讨论其肿瘤抑制活性的潜在机制。
SUV3 is a nuclear-encoded helicase that is highly conserved and localizes to the mitochondrial matrix. In yeast, loss of SUV3 function leads to the accumulation of group 1 intron transcripts, ultimately resulting in the loss of mitochondrial DNA, causing a petite phenotype. However, the mechanism leading to the loss of mitochondrial DNA remains unknown. SUV3 is essential for survival in higher eukaryotes, and its knockout in mice results in early embryonic lethality. Heterozygous mice exhibit a range of phenotypes, including premature aging and an increased cancer incidence. Furthermore, cells derived from SUV3 heterozygotes or knockdown cultural cells show a reduction in mtDNA. Transient downregulation of SUV3 leads to the formation of R-loops and the accumulation of double-stranded RNA in mitochondria. This review aims to provide an overview of the current knowledge regarding the SUV3-containing complex and discuss its potential mechanism for tumor suppression activity.
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