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PLoS One. 2018 Jan 19;13(1):e0190933. doi: 10.1371/journal.pone.0190933. eCollection 2018.

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

Author information

1
College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China.
2
Animal Husbandry Institute, Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Hohhot, China.
3
College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China.
4
Inner Mongolia Prataculture Research Center, Chinese Academy of Science, Hohhot, China.

Abstract

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.

PMID:
29351308
PMCID:
PMC5774689
DOI:
10.1371/journal.pone.0190933
[Indexed for MEDLINE]
Free PMC Article

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