A Sex Chromosome piRNA Promotes Robust Dosage Compensation and Sex Determination in C. elegans.
A Sex Chromosome piRNA Promotes Robust Dosage Compensation and Sex Determination in C. elegans.
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DOI:
10.1016/j.devcel.2018.01.025
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发表时间:
2018-03-26
影响因子:
11.8
通讯作者:
Mello CC
中科院分区:
文献类型:
--
作者:
Tang W;Seth M;Tu S;Shen EZ;Li Q;Shirayama M;Weng Z;Mello CC
In metazoans, Piwi-related Argonaute proteins engage piRNAs (Piwi-interacting small RNAs) to defend the genome against invasive nucleic acids, such as transposable elements. Yet many organisms—including worms and humans—express thousands of piRNA that do not target transposons, suggesting that piRNA function extends beyond genome defense. Here we show that the X chromosome-derived piRNA 21ux-1 down-regulates XOL-1 (XO Lethal), a master regulator of X-chromosome dosage compensation and sex determination in C. elegans. Mutations in 21ux-1 and several Piwi-pathway components sensitize hermaphrodites to dosage compensation and sex-determination defects. We show that the piRNA pathway also targets xol-1 in C. briggsae, a nematode species related to C. elegans. Our findings reveal physiologically important piRNA–mRNA interactions, raising the possibility that piRNAs function broadly to ensure robust gene expression and germline development. Although piRNAs are known to defend the genome against transposons, it remains unclear whether they have additional functions beyond genome defense. Tang et al. show that an X chromosome-derived piRNA down-regulates XOL-1 expression to promote robust regulation of dosage compensation and sex determination in C. elegans.
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Goh WS;Falciatori I;Tam OH;Burgess R;Meikar O;Kotaja N;Hammell M;Hannon GJ
通讯作者:
Hannon GJ
影响因子:
64.5
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Ashe A;Sapetschnig A;Weick EM;Mitchell J;Bagijn MP;Cording AC;Doebley AL;Goldstein LD;Lehrbach NJ;Le Pen J;Pintacuda G;Sakaguchi A;Sarkies P;Ahmed S;Miska EA
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Fang W;Wang X;Bracht JR;Nowacki M;Landweber LF
通讯作者:
Landweber LF
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9.2
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Haag, ES;Wang, SP;Kimble, J
通讯作者:
Kimble, J
影响因子:
7
作者:
Coghlan, A;Wolfe, KH
通讯作者:
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