中国农业科学 ›› 2024, Vol. 57 ›› Issue (1): 204-215.doi: 10.3864/j.issn.0578-1752.2024.01.014

• 畜牧·兽医 • 上一篇    下一篇

基于转录组测序研究调控黄羽肉鸡干毛性状关键基因和信号通路

姬改革1(), 陈智武2(), 单艳菊1, 刘一帆1, 屠云洁1, 邹剑敏1, 章明1, 巨晓军1, 束婧婷1(), 张海涛3, 唐燕飞4, 蒋华莲4   

  1. 1 江苏省家禽科学研究所/江苏省家禽遗传育种重点实验室,江苏扬州 225125
    2 广西金陵农牧集团有限公司,南宁 530000
    3 江苏立华牧业股份有限公司,江苏常州 213168
    4 广西富凤农牧集团有限公司,南宁 530024
  • 收稿日期:2023-05-09 接受日期:2023-10-31 出版日期:2024-01-01 发布日期:2024-01-10
  • 通信作者:
    束婧婷,E-mail:
  • 联系方式: 姬改革,E-mail:jigaige@126.com。陈智武,E-mail:ubtech@163.com。姬改革与陈智武为同等贡献者。
  • 基金资助:
    江苏省自然科学基金(BK20210955); 江苏省种业振兴揭榜挂帅项目(JBGS〔2021〕107); 江苏现代农业(肉鸡)产业技术体系(JATS[2022]399); 江苏省农业重大新品种创制项目(PZCZ201728); 现代农业产业技术体系建设专项资金(CARS-41)

Study of Key Genes and Signaling Pathways Regulating Dry Feather Traits in Yellow-Feathered Broiler Chickens Based on Transcriptome Analysis

JI GaiGe1(), CHEN ZhiWu2(), SHAN YanJu1, LIU YiFan1, TU YunJie1, ZOU JianMin1, ZHANG Ming1, JU XiaoJun1, SHU JingTing1(), ZHANG HaiTao3, TANG YanFei4, JIANG HuaLian4   

  1. 1 Key Laboratory of Poultry Genetics and Breeding of Jiangsu Province/Jiangsu Institute of Poultry Sciences, Yangzhou 225125, Jiangsu
    2 Guangxi Jinling Agriculture and Animal Husbandry Group Co., Ltd., Nanning 530000
    3 Jiangsu Lihua Animal Husbandry Stock Co., Ltd., Changzhou 213168, Jiangsu
    4 Guangxi Fufeng Farm Group Co., Ltd., Nanning 530024
  • Received:2023-05-09 Accepted:2023-10-31 Published:2024-01-01 Online:2024-01-10

摘要:

【目的】通过比较干毛和未干毛羽毛毛囊的形态学和基因表达差异,挖掘调控黄羽肉鸡羽毛干毛性状的重要候选基因和信号通路。【方法】分别采集背部未干毛和干毛羽毛皮肤组织样本各3个,运用组织切片技术,比较干毛和未干毛羽毛毛囊形态学差异;运用RNA-seq技术,比较两组样本之间的差异表达基因(differentially expressed genes,DEGs),并对其进行功能富集分析和蛋白互作网络构建;采用荧光定量PCR技术(RT-qPCR)对测序结果准确性进行验证。【结果】证实未干毛羽毛的毛囊处于生长期,已干毛的羽毛毛囊处于静止期。以未干毛毛囊(生长期)皮肤样本为对照,在干毛毛囊(静止期)皮肤样本中发现了942个DEGs(|fold-change|>2和P<0.05),其中384个基因表达下调,558个基因表达上调。Go功能分析显示细胞分裂、周期调控等相关生物过程被显著富集(P<0.05)。KEGG分析发现,MAPK、TGF-β、p53及DNA复制等相关信号通路被显著富集(P<0.05)。构建差异蛋白相互作用(PPI)网络,通过CytoHubba分析获得6个hub基因,分别为CDK1、MAD2L1、BUB1、CCNB2、PLK1和BUB1B。GSEA富集分析筛选到紧密连接、胰岛素、MAPK、TGF-β和细胞周期等信号通路与鸡羽毛毛囊生长周期显著关联(|NES|>1, FDR<0.25)。RT-qPCR结果显示8个DEGs表达趋势与RNA-seq结果基本一致。【结论】鸡羽毛的干毛性状与毛囊周期发育相关,MAPK和TGF-β等信号通路可能通过调控细胞周期相关基因的表达在羽毛生长发育中发挥重要作用;结果为进一步深入了解黄羽肉鸡羽毛干毛性状分子调控机制提供了基础资料。

关键词: 鸡, 干毛, 毛囊, RNA-seq, 基因, 信号通路

Abstract:

【Objective】 The study aimed to identify important candidate genes and signaling pathways associated with dry feather traits by comparing the morphological and gene expression differences between the feather follicles of dry and undried feathers. 【Method】 Three samples of skin tissue were selected from each of the undried and dried feathers. The histological examinations were used to compare the morphological differences between the feather follicles of dried and undried feathers. RNA-seq technology was employed to compare the differentially expressed genes (DEGs) between the two groups of skin samples. The accuracy of transcriptome results was validated by using the fluorescent quantitative PCR technique (RT-qPCR). 【Result】 By histological H.E staining, it was confirmed that the feather follicles of the undried feathers were in the growth phase, while the feather follicles of the dried feathers were in the resting phase. The feather follicle skin samples at the growth stage were used as controls, 942 DEGs were identified in resting feather follicle samples (|fold-change|>2 and P<0.05), including 384 significantly down-regulated DEGs and 558 upregulated DEGs. Gene ontology (Go) analysis suggested that the DEGs were significantly enriched in cell division, cycle regulation, and other related biological processes. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway results showed that the DEGs were related to MAPK, TGF-β, p53, and cell cycle-related signaling pathways. Protein-protein interaction (PPI) network was constructed and six hub genes were obtained by CytoHubba analysis, including CDK1, MAD2L1, BUB1, CCNB2, PLK1, and BUB1B. Gene Set Enrichment Analysis (GSEA) results indicated that the signaling pathways related to the tight junction, insulin, MAPK, TGF-β, and cell cycle-related pathways were significantly associated with the growth cycle of chicken feather follicles. The expression patterns of 8 DEGs detected by RT-qPCR were consistent with the RNA-seq results. 【Conclusion】 In summary, the dry feather traits of chickens were related to the development of feather follicle cycles. Signaling pathways such as MAPK and TGF-β might play important roles in feather growth and development by regulating the expression of cell cycle-related genes. The study provided clues for understanding the molecular regulatory mechanisms for dry feather traits in yellow-feathered broiler chickens.

Key words: chicken, dry feather, feather follicle, RNA-seq, gene, signaling pathway