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中国农学通报 ›› 2023, Vol. 39 ›› Issue (17): 113-123.doi: 10.11924/j.issn.1000-6850.casb2022-0530

• 水产·渔业 • 上一篇    下一篇

饲料维生素K3对大口黑鲈生长和健康的代谢转录调节机制研究

华雪铭(), 康鹏, 魏翔(), 陈晨, 潘韵超, 王潜潜   

  1. 上海海洋大学/农业农村部鱼类营养与环境生态研究中心/农业农村部淡水水产种质资源重点实验室/水产科学国家级实验教学示范中心,上海 201306
  • 收稿日期:2022-06-28 修回日期:2022-11-08 出版日期:2023-06-15 发布日期:2023-06-12
  • 通讯作者: 魏翔,男,1995年出生,江苏连云港人,硕士,研究方向:水产动物营养学。通信地址:201306 上海市浦东新区沪城环路999号,E-mail:981820800@qq.com
  • 作者简介:

    华雪铭,女,1974年出生,浙江慈溪人,教授,博士,研究方向:水产动物营养与饲料学。通信地址:201306 上海市浦东新区沪城环路999号,E-mail:

  • 基金资助:
    广东省重点领域研发计划项目“养殖动物新型蛋白源开发与高效饲料研制”(2020B0202010001)

Metabolic and Transcriptional Regulation of Dietary Vitamin K3 on Growth and Health of Largemouth Bass (Micropterus salmoides)

HUA Xueming(), KANG Peng, WEI Xiang(), CHEN Chen, PAN Yunchao, WANG Qianqian   

  1. Shanghai Ocean University/ Centre for Research on Environmental Ecology and Fish Nutrition (CREEFN) of the Ministry of Agriculture and Rural Affairs/ Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs / National Demonstration Center for Experimental Fisheries Science Education, Shanghai 201306
  • Received:2022-06-28 Revised:2022-11-08 Online:2023-06-15 Published:2023-06-12

摘要:

为了探究维生素K3在大口黑鲈体内的可能作用机制,在基础饲料中分别添加不同水平的维生素K3,配制成维生素K3含量分别为0.78(K30组)、15.84 mg/kg(K315组)的试验饲料,运用代谢组学和转录组学的方法对平均初始体重为(12.96±0.07) g、摄食饲料8周后生长和健康程度差异显著的K30组和K315组大口黑鲈肝脏进行分析。共鉴定出712个差异代谢物,以K30组为对照,K315组有326个上调的差异代谢物,386个下调;将差异代谢物注释到KEGG数据库中,共有13个差异代谢物,其中7个上调,6个下调。参与的功能通路有23条。整合通路表明维生素K3可通过L-丝氨酸调节鞘脂类代谢,也可通过壳寡糖调节糖类代谢。两组的差异表达基因在GO数据库中共有86个,参与的二级功能有26种。两组的差异基因在KEGG数据库中有29个,参与46条代谢途径。从肝脏代谢物和代谢通路的角度综合分析以上结果得到,大口黑鲈摄入适量的维生素K3可以提高抗氧化、免疫、机体恢复等能力,从而促进生长、维持健康。相关差异基因mRNA分析表明,维生素K3能够促进大口黑鲈骨骼发育和提高免疫能力。实验研究中没有发现与凝血有关的差异基因或代谢物。通过综合分析,在特定代谢组学和转录组学之间未发现相关性。因此,有必要进一步研究维生素K的作用机制。

关键词: 大口黑鲈, 维生素K3, 添加剂, 骨骼发育, 代谢组学, 转录组学

Abstract:

In order to explore the possible mechanism of dietary vitamin K3 in largemouth bass, varying amounts of vitamin K3 were added to the basic diet to prepare experimental diets with vitamin K3 contents of 0.78 (K30 group) and 15.84 mg/kg (K315 group). Metabolomics and transcriptomics were used to analyze the livers of largemouth bass with initial average body weight of (12.96±0.07) g and fed with K30 group and K315 group diets for 8 weeks, resulting in significant growth performance and health status. The results showed that 712 differential metabolites were identified. Taking K30 group as the control, there were 326 up-regulated and 386 down-regulated differential metabolites in K315 group. Annotating the differential metabolites into KEGG database, 13 differential metabolites were found in K315 group compared to K30 group, including 7 up-regulated and 6 down-regulated ones. There were 23 functional pathways involved. Integrated pathways indicated that vitamin K3 could regulate sphingolipid metabolism through L-serine and regulate carbohydrate metabolism through D-glucosaminide. There were 86 differentially expressed genes in the GO database of the two groups, 26 of them participated secondary functions. There were 29 differential genes between the two groups in KEGG database, involved in 46 metabolic pathways. From the perspective of liver metabolites and metabolic pathways, adequate intake of vitamin K3 could improve the antioxidant, immune, body recovery and other abilities, thus promoting growth and maintaining health. The analysis of related differential gene mRNA indicated that vitamin K3 could promote the bone development and immune ability of largemouth bass. It is worth mentioning that no differential genes or metabolites relating coagulation were found in this study. By comprehensive analysis, no correlation was found between specific metabolomics and transcriptomics with an integrated analysis. Therefore, it is necessary to further study the mechanism of vitamin K.

Key words: Micropterus salmoides, vitamin K3, additive, skeletal development, metabolomics, transcriptomics