Wnt6 is required for maxillary palp formation in Drosophila.

Wnt6 is required for maxillary palp formation in Drosophila.
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DOI:
10.1186/1741-7007-11-104
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发表时间:
2013-10-03
期刊:
影响因子:
5.4
通讯作者:
Teleman AA
Teleman AA
中科院分区:
生物学2区
文献类型:
--
作者:
Doumpas N;Jékely G;Teleman AA

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WNT6是WNT家族中一个进化上古老的成员。在果蝇中,Wnt6功能丧失的动物还没有报道,因此缺乏关于Fly Wnt6功能的信息。在翼盘中,Wnt6在背侧/腹侧边界以类似于无翼的模式表达,无翼是翅膀大小的重要调节因素。为了测试Wnt6是否也有助于调节翅膀大小,我们产生了Wnt6基因敲除果蝇。Wnt6基因敲除的果蝇是存活的,在翅膀大小和平面细胞极性方面没有明显的缺陷。令人惊讶的是,Wnt6基因敲除者没有上颌触须。有趣的是,Wnt6在半翅目昆虫的基因组中缺失,这与这些昆虫缺乏上颌触须有关。Wnt6对果蝇上颌骨触须的发育起重要作用,系统发育分析表明Wnt6基因的缺失也可能在进化的时间尺度上导致了上颌骨触须的丧失。
Wnt6 is an evolutionarily ancient member of the Wnt family. In Drosophila, Wnt6 loss-of-function animals have not yet been reported, hence information about fly Wnt6 function is lacking. In wing discs, Wnt6 is expressed at the dorsal/ventral boundary in a pattern similar to that of wingless, an important regulator of wing size. To test whether Wnt6 also contributes towards wing size regulation, we generated Wnt6 knockout flies. Wnt6 knockout flies are viable and have no obvious defect in wing size or planar cell polarity. Surprisingly, Wnt6 knockouts lack maxillary palps. Interestingly, Wnt6 is absent from the genome of hemipterans, correlating with the absence of maxillary palps in these insects. Wnt6 is important for maxillary palp development in Drosophila, and phylogenetic analysis indicates that loss of Wnt6 may also have led to loss of maxillary palps on an evolutionary time scale.
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