How might flukes and tapeworms maintain genome integrity without a canonical piRNA pathway?
How might flukes and tapeworms maintain genome integrity without a canonical piRNA pathway?
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DOI:
10.1016/j.pt.2014.01.001
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发表时间:
2014-03
影响因子:
9.6
通讯作者:
Brindley PJ
中科院分区:
文献类型:
--
作者:
Skinner DE;Rinaldi G;Koziol U;Brehm K;Brindley PJ
Surveillance by RNA interference is central to controlling the mobilization of transposable elements (TEs). In stem cells, Piwi argonaute (Ago) proteins and associated proteins repress mobilization of TEs to maintain genome integrity. This defense mechanism targeting TEs is termed the Piwi-interacting RNA (Piwi-piRNA) pathway. In this Opinion, we draw attention to the situation that the genomes of cestodes and trematodes have lost the piwi and vasa genes that are hallmark characters of the germline multipotency program. This absence of Piwi-like Agos and Vasa helicases prompts the question: how does the germline of these flatworms withstand mobilization of TEs? Here we present an interpretation of mechanisms likely to defend the germline integrity of parasitic flatworms.
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