Dop1 enhances conspecific olfactory attraction by inhibiting miR-9a maturation in locusts.

Dop1 enhances conspecific olfactory attraction by inhibiting miR-9a maturation in locusts.
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Dop1 通过抑制 miR-9a 成熟来增强蝗虫的同种嗅觉吸引力

DOI:
10.1038/s41467-018-03437-z
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发表时间:
2018-03-22
影响因子:
16.6
通讯作者:
Kang L
Kang L
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Guo X;Ma Z;Du B;Li T;Li W;Xu L;He J;Kang L

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多巴胺受体1(Dop 1)介导蝗虫的吸引行为,然而,Dop 1调节这一过程的机制至今仍不清楚。在这里,我们确定差异表达的小RNA与蝗虫嗅觉吸引激活和抑制Dop 1后。小RNA转录组分析和qPCR验证表明,Dop 1激活和抑制分别下调和上调microRNA-9a(miR-9a)表达。miR-9a在独居蝗虫中的敲低增加了它们对群居挥发物的吸引力,而miR-9a在群居蝗虫中的过表达降低了嗅觉吸引力。此外,miR-9a直接靶向腺苷酸环化酶2(ac 2),导致其在mRNA和蛋白水平下调。ac 2响应Dop 1并介导蝗虫嗅觉吸引。Dop 1抑制miR-9a表达的机制是诱导La蛋白从miR-9a前体上解离并导致miR-9a成熟抑制。我们的研究结果揭示了Dop 1-miR-9a-AC 2电路,调节蝗虫的嗅觉吸引力的聚集。这项研究表明,miRNAs在GPCR信号转导中起着关键的信使作用。
Dopamine receptor 1 (Dop1) mediates locust attraction behaviors, however, the mechanism by which Dop1 modulates this process remains unknown to date. Here, we identify differentially expressed small RNAs associated with locust olfactory attraction after activating and inhibiting Dop1. Small RNA transcriptome analysis and qPCR validation reveal that Dop1 activation and inhibition downregulates and upregulates microRNA-9a (miR-9a) expression, respectively. miR-9a knockdown in solitarious locusts increases their attraction to gregarious volatiles, whereas miR-9a overexpression in gregarious locusts reduces olfactory attraction. Moreover, miR-9a directly targetsadenylyl cyclase 2(ac2), causing its downregulation at the mRNA and protein levels.ac2responds to Dop1 and mediates locust olfactory attraction. Mechanistically, Dop1 inhibits miR-9a expression through inducing the dissociation of La protein from pre-miR-9a and resulting in miR-9a maturation inhibition. Our results reveal a Dop1–miR-9a–AC2 circuit that modulates locust olfactory attraction underlying aggregation. This study suggests that miRNAs act as key messengers in the GPCR signaling.
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发表时间: 2016-10-01
影响因子: 4.3
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Homberg JR;Olivier JD;VandenBroeke M;Youn J;Ellenbroek AK;Karel P;Shan L;van Boxtel R;Ooms S;Balemans M;Langedijk J;Muller M;Vriend G;Cools AR;Cuppen E;Ellenbroek BA
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发表时间: 2001-09-01
影响因子: 2.2
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发表时间: 2004-12-21
影响因子: 11.1
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