NUMTs Can Imitate Biparental Transmission of mtDNA-A Case in Drosophila melanogaster.

NUMTs Can Imitate Biparental Transmission of mtDNA-A Case in Drosophila melanogaster.
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NUMTs可以模拟线粒体DNA的双亲传递--以果蝇为例

DOI:
10.3390/genes13061023
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发表时间:
2022-06-06
期刊:
影响因子:
3.5
通讯作者:
Ladoukakis, Emmanuel D.
Ladoukakis, Emmanuel D.
中科院分区:
生物学3区
文献类型:
--
作者:
Parakatselaki, Maria-Eleni;Zhu, Chen-Tseh;Rand, David;Ladoukakis, Emmanuel D.

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mtDNA序列可以整合到核基因组中并产生核线粒体片段(NUMT),其序列类似于mtDNA,但像核基因组一样通过双亲传递。NUMT可能被误认为是真实的mtDNA,并可能导致错误的印象,即mtDNA是双亲传播的。在这里,我们报告的情况下,线粒体DNA异质性在果蝇DGRP线,其中一个单倍型是双亲传递的常染色体方式。由于该单倍型与mtDNA的序列相同,杂交实验导致不确定异质性是真实的还是NUMT造成的假象。更具体的实验表明,有一个大的NUMT插入在一个特定的DGRP线的X染色体,模仿双亲遗传的mtDNA。我们的结果提示,在研究mtDNA异质性和mtDNA遗传时,首先应排除NUMT干扰的可能性。
mtDNA sequences can be incorporated into the nuclear genome and produce nuclear mitochondrial fragments (NUMTs), which resemble mtDNA in their sequence but are transmitted biparentally, like the nuclear genome. NUMTs can be mistaken as real mtDNA and may lead to the erroneous impression that mtDNA is biparentally transmitted. Here, we report a case of mtDNA heteroplasmy in a Drosophila melanogaster DGRP line, in which the one haplotype was biparentally transmitted in an autosomal manner. Given the sequence identity of this haplotype with the mtDNA, the crossing experiments led to uncertainty about whether heteroplasmy was real or an artifact due to a NUMT. More specific experiments revealed that there is a large NUMT insertion in the X chromosome of a specific DGRP line, imitating biparental inheritance of mtDNA. Our result suggests that studies on mtDNA heteroplasmy and on mtDNA inheritance should first exclude the possibility of NUMT interference in their data.
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发表时间: 2020-11-18
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