Screening and Validation of p38 MAPK Involved in Ovarian Development of Brachymystax lenok
文献类型： 外文期刊
作者： Huang, Tianqing 1 ; Gu, Wei 1 ; Liu, Enhui 1 ; Zhang, Lanlan 2 ; Dong, Fulin 1 ; He, Xianchen 3 ; Jiao, Wenlong 4 ; Li, Chunyu 5 ; Wang, Bingqian 1 ; Xu, Gefeng 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Heilongjiang River Fisheries Res Inst, Minist Agr & Rural Affairs, Key Lab Freshwater Aquat Biotechnol & Breeding, Harbin, Peoples R China
2.Heilongjiang Prov Gen Stn Aquat Technol Promot, Harbin, Peoples R China
3.Heilongjiang Aquat Anim Resource Conservat Ctr, Harbin, Peoples R China
4.Gansu Fisheries Res Inst, Lanzhou, Peoples R China
5.Xinjiang Tianyun Organ Agr Co, Yili Grp, Hohhot, Peoples R China
关键词： full-length transcriptome; p38 MAPK; ovarian development; Brachymystax lenok; SMRT and NGS
期刊名称：FRONTIERS IN VETERINARY SCIENCE （ 影响因子：3.471； 五年影响因子：3.821 ）
ISSN：
年卷期： 2022 年 9 卷
页码：
收录情况： SCI
摘要： Brachymystax lenok (lenok) is a rare cold-water fish native to China that is of high meat quality. Its wild population has declined sharply in recent years, and therefore, exploring the molecular mechanisms underlying the development and reproduction of lenoks for the purposes of artificial breeding and genetic improvement is necessary. The lenok comparative transcriptome was analyzed by combining single molecule, real-time, and next generation sequencing (NGS) technology. Differentially expressed genes (DEGs) were identified in five tissues (head kidney, spleen, liver, muscle, and gonad) between immature [300 days post-hatching (dph)] and mature [three years post-hatching (ph)] lenoks. In total, 234,124 and 229,008 full-length non-chimeric reads were obtained from the immature and mature sequencing data, respectively. After NGS correction, 61,405 and 59,372 non-redundant transcripts were obtained for the expression level and pathway enrichment analyses, respectively. Compared with the mature group, 719 genes with significantly increased expression and 1,727 genes with significantly decreased expression in all five tissues were found in the immature group. Furthermore, DEGs and pathways involved in the endocrine system and gonadal development were identified, and p38 mitogen-activated protein kinases (MAPKs) were identified as potentially regulating gonadal development in lenok. Inhibiting the activity of p38 MAPKs resulted in abnormal levels of gonadotropin-releasing hormone, follicle-stimulating hormone, and estradiol, and affected follicular development. The full-length transcriptome data obtained in this study may provide a valuable reference for the study of gene function, gene expression, and evolutionary relationships in B. lenok and may illustrate the basic regulatory mechanism of ovarian development in teleosts.
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