Skin transcriptome reveals the dynamic changes in the Wnt pathway during integument morphogenesis of chick embryos.

Skin transcriptome reveals the dynamic changes in the Wnt pathway during integument morphogenesis of chick embryos.
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皮肤转录组揭示鸡胚珠被形态发生过程中Wnt通路的动态变化

DOI:
10.1371/journal.pone.0190933
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发表时间:
2018
期刊:
影响因子:
3.7
通讯作者:
Zhang W
Zhang W
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Gong H;Wang H;Wang Y;Bai X;Liu B;He J;Wu J;Qi W;Zhang W

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鸟类有一个独特的被羽毛覆盖。皮肤形态发生是一个连续的复杂过程。迄今为止,大多数研究都集中在一个单一的发展点或阶段。较少的研究集中在整个转录组的基础上的胚胎珠被发育的时间过程。为了分析基因表达谱的总体变化,我们对孵化第6天至第21天的鸡胚皮肤样品的转录组进行了测序,并确定了5830个差异表达基因(DEG)。系统聚类分析表明,E6~E14是羽囊形态发生的关键时期。根据京都基因与基因组百科全书(KEGG)对DEG信号通路的分析,在羽囊和羽毛形态发生过程中,Wnt信号通路分为经典通路和非经典通路。在胚胎发育过程中,Wnt信号通路相关的抑制剂和配体的基因表达水平变化显著。结果表明,从E9到E14,经典途径和非经典途径之间存在交错相位关系。这些分析为揭示基因调控机制提供了新的思路,也为鸡体壁形态发生的研究提供了基础数据。
Avian species have a unique integument covered with feathers. Skin morphogenesis is a successive and complex process. To date, most studies have focused on a single developmental point or stage. Fewer studies have focused on whole transcriptomes based on the time-course of embryo integument development. To analyze the global changes in gene expression profiles, we sequenced the transcriptome of chicken embryo skin samples from day 6 to day 21 of incubation and identified 5830 differentially expressed genes (DEGs). Hierarchical clustering showed that E6 to E14 is the critical period of feather follicle morphogenesis. According to Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis of the DEGs, two kinds of Wnt signaling pathways (a canonical pathway and a non-canonical pathway) changed during feather follicle and feather morphogenesis. The gene expression level of inhibitors and ligands related to the Wnt signaling pathway varied significantly during embryonic development. The results revealed a staggered phase relationship between the canonical pathway and the non-canonical pathway from E9 to E14. These analyses shed new light on the gene regulatory mechanism and provided fundamental data related to integument morphogenesis of chickens.
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