A complete biosynthetic pathway of the long-chain polyunsaturated fatty acids in an amphidromous fish, ayu sweetfish Plecoglossus altivelis (Stomiati; Osmeriformes)

IF 3.9 2区 生物学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY
Bo Zhao , Yingying Peng , Yuki Itakura , Myriam Lizanda , Yutaka Haga , Shuichi Satoh , Juan C. Navarro , Óscar Monroig , Naoki Kabeya
{"title":"A complete biosynthetic pathway of the long-chain polyunsaturated fatty acids in an amphidromous fish, ayu sweetfish Plecoglossus altivelis (Stomiati; Osmeriformes)","authors":"Bo Zhao ,&nbsp;Yingying Peng ,&nbsp;Yuki Itakura ,&nbsp;Myriam Lizanda ,&nbsp;Yutaka Haga ,&nbsp;Shuichi Satoh ,&nbsp;Juan C. Navarro ,&nbsp;Óscar Monroig ,&nbsp;Naoki Kabeya","doi":"10.1016/j.bbalip.2024.159498","DOIUrl":null,"url":null,"abstract":"<div><p>The biosynthetic capability of the long-chain polyunsaturated fatty acids (LC-PUFA) in teleosts are highly diversified due to evolutionary events such as gene loss and subsequent neo- and/or sub-functionalisation of enzymes encoded by existing genes. In the present study, we have comprehensively characterised genes potentially involved in LC-PUFA biosynthesis, namely one front-end desaturase (<em>fads2</em>) and eight fatty acid elongases (<em>elovl1a</em>, <em>elovl1b</em>, <em>elovl4a</em>, <em>elovl4b</em>, <em>elovl5</em>, <em>elovl7</em>, <em>elovl8a</em> and <em>elovl8b</em>) from an amphidromous teleost, Ayu sweetfish, <em>Plecoglossus altivelis</em>. Functional analysis confirmed Fads2 with Δ6, Δ5 and Δ8 desaturase activities towards multiple PUFA substrates and several Elovl enzymes exhibited elongation capacities towards C<sub>18–20</sub> or C<sub>18–22</sub> PUFA substrates. Consequently, <em>P. altivelis</em> possesses a complete enzymatic capability to synthesise physiologically important LC-PUFA including arachidonic acid (ARA, 20:4n-6), eicosapentaenoic acid (EPA, 20:5n-3) and docosahexaenoic acid (DHA, 22:6n-3) from their C<sub>18</sub> precursors. Interestingly, the loss of <em>elovl2</em> gene in <em>P. altivelis</em> was corroborated by genomic and phylogenetic analyses. However, this constraint would possibly be overcome by the function of alternative Elovl enzymes, such as Elovl1b, which has not hitherto been functionally characterised in teleosts. The present study contributes novel insights into LC-PUFA biosynthesis in the relatively understudied teleost group, Osmeriformes (Stomiati), thereby enhancing our understanding of the complement of LC-PUFA biosynthetic genes within teleosts.</p></div>","PeriodicalId":8815,"journal":{"name":"Biochimica et biophysica acta. Molecular and cell biology of lipids","volume":"1869 6","pages":"Article 159498"},"PeriodicalIF":3.9000,"publicationDate":"2024-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biochimica et biophysica acta. Molecular and cell biology of lipids","FirstCategoryId":"99","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1388198124000489","RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"BIOCHEMISTRY & MOLECULAR BIOLOGY","Score":null,"Total":0}
引用次数: 0

Abstract

The biosynthetic capability of the long-chain polyunsaturated fatty acids (LC-PUFA) in teleosts are highly diversified due to evolutionary events such as gene loss and subsequent neo- and/or sub-functionalisation of enzymes encoded by existing genes. In the present study, we have comprehensively characterised genes potentially involved in LC-PUFA biosynthesis, namely one front-end desaturase (fads2) and eight fatty acid elongases (elovl1a, elovl1b, elovl4a, elovl4b, elovl5, elovl7, elovl8a and elovl8b) from an amphidromous teleost, Ayu sweetfish, Plecoglossus altivelis. Functional analysis confirmed Fads2 with Δ6, Δ5 and Δ8 desaturase activities towards multiple PUFA substrates and several Elovl enzymes exhibited elongation capacities towards C18–20 or C18–22 PUFA substrates. Consequently, P. altivelis possesses a complete enzymatic capability to synthesise physiologically important LC-PUFA including arachidonic acid (ARA, 20:4n-6), eicosapentaenoic acid (EPA, 20:5n-3) and docosahexaenoic acid (DHA, 22:6n-3) from their C18 precursors. Interestingly, the loss of elovl2 gene in P. altivelis was corroborated by genomic and phylogenetic analyses. However, this constraint would possibly be overcome by the function of alternative Elovl enzymes, such as Elovl1b, which has not hitherto been functionally characterised in teleosts. The present study contributes novel insights into LC-PUFA biosynthesis in the relatively understudied teleost group, Osmeriformes (Stomiati), thereby enhancing our understanding of the complement of LC-PUFA biosynthetic genes within teleosts.

一种两栖鱼类--鲶鱼(Plecoglossus altivelis,Stomiati; Osmeriformes)体内长链多不饱和脂肪酸的完整生物合成途径
由于基因缺失和现有基因编码的酶的新功能和/或亚功能化等进化事件,远足类动物长链多不饱和脂肪酸(LC-PUFA)的生物合成能力高度多样化。在本研究中,我们全面鉴定了可能参与低浓聚合脂肪酸(LC-PUFA)生物合成的基因,即一种前端去饱和酶(fads2)和八种脂肪酸延长酶(elovl1a、elovl1b、elovl4a、elovl4b、elovl5、elovl7、elovl8a 和 elovl8b)。功能分析证实 Fads2 对多种 PUFA 底物具有 Δ6、Δ5 和 Δ8 去饱和酶活性,几种 Elovl 酶对 C18-20 或 C18-22 PUFA 底物具有延伸能力。因此,P. altivelis 具有从其 C18 前体合成生理上重要的 LC-PUFA 的完整酶能力,包括花生四烯酸(ARA,20:4n-6)、二十碳五烯酸(EPA,20:5n-3)和二十二碳六烯酸(DHA,22:6n-3)。有趣的是,基因组学和系统进化分析证实了在 P. altivelis 中 elovl2 基因的缺失。然而,这一限制可能会被替代 Elovl 酶(如 Elovl1b)的功能所克服,迄今为止,Elovl1b 还没有在远足类动物中得到功能表征。本研究为研究相对较少的远摄鱼类 Osmeriformes (Stomiati) 的 LC-PUFA 生物合成提供了新的见解,从而加深了我们对远摄鱼类 LC-PUFA 生物合成基因补体的了解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
CiteScore
11.00
自引率
2.10%
发文量
109
审稿时长
53 days
期刊介绍: BBA Molecular and Cell Biology of Lipids publishes papers on original research dealing with novel aspects of molecular genetics related to the lipidome, the biosynthesis of lipids, the role of lipids in cells and whole organisms, the regulation of lipid metabolism and function, and lipidomics in all organisms. Manuscripts should significantly advance the understanding of the molecular mechanisms underlying biological processes in which lipids are involved. Papers detailing novel methodology must report significant biochemical, molecular, or functional insight in the area of lipids.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信