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Wu Y, Xiao P, Sha H, Luo X, Zou G, Liang H. Transcriptome Analysis Reveals the Potential Key Genes in Nutritional Deposition in the Common Carp ( Cyprinus carpio). Animals (Basel) 2024; 14:1939. [PMID: 38998051 PMCID: PMC11240310 DOI: 10.3390/ani14131939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Revised: 06/18/2024] [Accepted: 06/28/2024] [Indexed: 07/14/2024] Open
Abstract
The common carp (Cyprinus carpio) is one of the most important aquaculture species in China, known for its remarkable adaptability and nutritional profile. However, the specific molecular response mechanisms regulating the nutritional deposition of carp remain inadequately elucidated. This study conducted a comprehensive analysis of muscle nutritional content and transcriptome data from liver and muscle tissues of three distinct carp varieties. The aim was to elucidate the key genes and signaling pathways that regulate muscle nutritional composition in carp. The findings revealed that FFRC carp (FFRC) exhibited significantly higher levels of crude fat, total n-3 polyunsaturated fatty acids, and total n-6 polyunsaturated fatty acids in muscle tissue compared to Ying carp (YC) and Huanghe carp (HC) (p < 0.05). Transcriptomic analyses correlated these elevated levels with a marked upregulation of genes involved in the activation and transportation of fatty acid (fabp7, acsl5, acsbg2) as well as biosynthesis and elongation of long-chain unsaturated fatty acids (elovl2, fads2) within the liver. Furthermore, the flavor amino acid, essential amino acids, and crude protein content in the muscle of HC were significantly higher than in FFRC and YC (p < 0.05). Transcriptomic analyses indicated that this was associated with significant changes in the expression of genes related to amino acid metabolism (asns, alt, ldha, glul, setd, prodh, l3hypdh, hoga1) within their muscle tissue. This research provides a theoretical foundation for the precise modulation of the muscle nutritional composition in carp.
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Affiliation(s)
- Yunya Wu
- Yangtze River Fisheries Research Institute, Chinese Academy of Fisheries Science, Wuhan 430223, China
| | - Pengfei Xiao
- Yangtze River Fisheries Research Institute, Chinese Academy of Fisheries Science, Wuhan 430223, China
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China
| | - Hang Sha
- Yangtze River Fisheries Research Institute, Chinese Academy of Fisheries Science, Wuhan 430223, China
| | - Xiangzhong Luo
- Yangtze River Fisheries Research Institute, Chinese Academy of Fisheries Science, Wuhan 430223, China
| | - Guiwei Zou
- Yangtze River Fisheries Research Institute, Chinese Academy of Fisheries Science, Wuhan 430223, China
| | - Hongwei Liang
- Yangtze River Fisheries Research Institute, Chinese Academy of Fisheries Science, Wuhan 430223, China
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Wang K, Song T, Ke L, Sun Y, Ye J. Dietary High Levels of Coconut Oil Replacing Fish Oil Did Not Affect Growth, but Promoted Liver Lipid Deposition of Orange-Spotted Groupers ( Epinephelus coioides). Animals (Basel) 2024; 14:1534. [PMID: 38891580 PMCID: PMC11171206 DOI: 10.3390/ani14111534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Revised: 05/16/2024] [Accepted: 05/20/2024] [Indexed: 06/21/2024] Open
Abstract
In this study, we conducted an 8-week feeding trial to investigate the effects of replacing fish oil (FO) with coconut oil (CO) on the growth performance, blood components, tissue fatty acid (FA) profile, and mRNA levels of genes related to lipid metabolism in the liver of the orange-spotted grouper (Epinephelus coioides). Five isolipidic and isoproteic diets were formulated through increasing the CO levels (0, 25%, 50%, 75%, and 100%, respectively). Triplicate groups of twenty-five fish (initial wet weight of about 22.4 g/fish) were fed one of the diets twice daily to apparent satiety. The 25% CO diet had the highest growth rate and feed utilization, and the 100% CO diet exhibited a comparable growth and feed utilization with that of the control diet, indicating a suitable FO substitute. Moreover, the hepatosomatic index, intraperitoneal fat rate, liver lipid content, as well as the serum HDL-C content and ALT activity had positive linear and/or quadratic responses, but the serum TC and LDL-C contents exhibited the opposite trend, with an increasing CO inclusion level. The FA profile in the liver and muscle generally mirrored the FA profile in the feed. Furthermore, the mRNA levels of the fas, acc, g6pd, srebp-1c, and δ6fad genes in the liver had positive linear and/or quadratic responses, but the mRNA levels of elovl 4 and elovl 5 had the opposite trend, with increasing dietary CO inclusion levels. When compared with the control diet, 25% and 50% CO diets up-regulated the mRNA levels of cpt 1, while the 75% and 100% CO diets down-regulated its mRNA levels. The hsl and atgl were down-regulated through the addition of dietary CO. The mRNA level of lpl was not affected by dietary treatments. Results showed that CO could completely replace FO without affecting growth performance, but high CO will lead to the significant liver lipid deposition and lower LC-PUFAs contents of fish flesh.
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Affiliation(s)
| | | | | | | | - Jidan Ye
- Xiamen Key Laboratory for Feed Quality Testing and Safety Evaluation, Fisheries College, Jimei University, Xiamen 361021, China; (K.W.); (T.S.); (L.K.); (Y.S.)
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Zhang H, Li P, Zhu Y, Jiang Y, Feng J, Zhao Z, Xu J. Contribution of elovl5a to Docosahexaenoic Acid (DHA) Synthesis at the Transcriptional Regulation Level in Common Carp, Cyprinus carpio. Animals (Basel) 2024; 14:544. [PMID: 38396511 PMCID: PMC10886045 DOI: 10.3390/ani14040544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 01/29/2024] [Accepted: 02/01/2024] [Indexed: 02/25/2024] Open
Abstract
Docosahexaenoic acid (DHA) is an essential nutrient for humans and plays a critical role in human development and health. Freshwater fish, such as the common carp (Cyprinus carpio), have a certain degree of DHA biosynthesis ability and could be a supplemental source of human DHA needs. The elongase of very-long-chain fatty acid 5 (Elovl5) is an important enzyme affecting polyunsaturated fatty acid (PUFA) biosynthesis. However, the function and regulatory mechanism of the elovl5 gene related to DHA synthesis in freshwater fish is not clear yet. Previous studies have found that there are two copies of the elovl5 gene, elovl5a and elovl5b, which have different functions. Our research group found significant DHA content differences among individuals in Yellow River carp (Cyprinus carpio var.), and four candidate genes were found to be related to DHA synthesis through screening. In this study, the expression level of elovl5a is decreased in the high-DHA group compared to the low-DHA group, which indicated the down-regulation of elovl5a in the DHA synthesis pathways of Yellow River carp. In addition, using a dual-luciferase reporter gene assay, we found that by targeting the 3'UTR region of elovl5a, miR-26a-5p could regulate DHA synthesis in common carp. After CRISPR/Cas9 disruption of elovl5a, the DHA content in the disrupted group was significantly higher than in the wildtype group; meanwhile, the expression level of elovl5a in the disrupted group was significantly reduced compared with the wildtype group. These results suggest that elovl5a may be down-regulating DHA synthesis in Yellow River carp. This study could provide useful information for future research on the genes and pathways that affect DHA synthesis.
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Affiliation(s)
- Hanyuan Zhang
- Key Laboratory of Aquatic Genomics, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory of Fishery Biotechnology, Chinese Academy of Fishery Sciences, Beijing 100141, China; (P.L.); (Y.Z.); (Y.J.); (Z.Z.)
| | - Peizhen Li
- Key Laboratory of Aquatic Genomics, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory of Fishery Biotechnology, Chinese Academy of Fishery Sciences, Beijing 100141, China; (P.L.); (Y.Z.); (Y.J.); (Z.Z.)
| | - Youxiu Zhu
- Key Laboratory of Aquatic Genomics, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory of Fishery Biotechnology, Chinese Academy of Fishery Sciences, Beijing 100141, China; (P.L.); (Y.Z.); (Y.J.); (Z.Z.)
| | - Yanliang Jiang
- Key Laboratory of Aquatic Genomics, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory of Fishery Biotechnology, Chinese Academy of Fishery Sciences, Beijing 100141, China; (P.L.); (Y.Z.); (Y.J.); (Z.Z.)
| | - Jianxin Feng
- Henan Academy of Fishery Sciences, Zhengzhou 450044, China;
| | - Zixia Zhao
- Key Laboratory of Aquatic Genomics, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory of Fishery Biotechnology, Chinese Academy of Fishery Sciences, Beijing 100141, China; (P.L.); (Y.Z.); (Y.J.); (Z.Z.)
| | - Jian Xu
- Fisheries Engineering Institute, Chinese Academy of Fishery Sciences, Beijing 100141, China
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Siddiqui AJ, Jahan S, Chaturvedi S, Siddiqui MA, Alshahrani MM, Abdelgadir A, Hamadou WS, Saxena J, Sundararaj BK, Snoussi M, Badraoui R, Adnan M. Therapeutic Role of ELOVL in Neurological Diseases. ACS OMEGA 2023; 8:9764-9774. [PMID: 36969404 PMCID: PMC10034982 DOI: 10.1021/acsomega.3c00056] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 02/23/2023] [Indexed: 06/18/2023]
Abstract
Fatty acids play an important role in controlling the energy balance of mammals. De novo lipogenesis also generates a significant amount of lipids that are endogenously produced in addition to their ingestion. Fatty acid elongation beyond 16 carbons (palmitic acid), which can lead to the production of very long chain fatty acids (VLCFA), can be caused by the rate-limiting condensation process. Seven elongases, ELOVL1-7, have been identified in mammals and each has a unique substrate specificity. Researchers have recently developed a keen interest in the elongation of very long chain fatty acids protein 1 (ELOVL1) enzyme as a potential treatment for a variety of diseases. A number of neurological disorders directly or indirectly related to ELOVL1 involve the elongation of monounsaturated (C20:1 and C22:1) and saturated (C18:0-C26:0) acyl-CoAs. VLCFAs and ELOVL1 have a direct impact on the neurological disease. Other neurological symptoms such as ichthyotic keratoderma, spasticity, and hypomyelination have also been linked to the major enzyme (ELOVL1). Recently, ELOVL1 has also been heavily used to treat a number of diseases. The current review focuses on in-depth unique insights regarding the role of ELOVL1 as a therapeutic target and associated neurological disorders.
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Affiliation(s)
- Arif Jamal Siddiqui
- Department
of Biology, College of Science, University
of Ha’il, P.O. Box 2440, Ha’il 81451, Saudi Arabia
- Molecular
Diagnostics and Personalized Therapeutics Unit, University of Ha’il, P.O. Box 2440, Ha’il 81451, Saudi Arabia
| | - Sadaf Jahan
- Department
of Medical Laboratory Sciences, College of Applied Medical Sciences, Majmaah University, Al Majmaah 11952, Saudi Arabia
| | - Swati Chaturvedi
- Department
of Pharmaceutics and Pharmacokinetics, Pre-Clinical North, Lab-106, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India
| | - Maqsood Ahmed Siddiqui
- Department
of Zoology, College of Science, King Saud
University, P.O. Box 2455, Riyadh 11451, Kingdom of Saudi Arabia
| | - Mohammed Merae Alshahrani
- Department
of Clinical Laboratory Sciences, Faculty of Applied Medial Sciences, Najran University, P.O. Box 1988, Najran 61441, Saudi Arabia
| | - Abdelmushin Abdelgadir
- Department
of Biology, College of Science, University
of Ha’il, P.O. Box 2440, Ha’il 81451, Saudi Arabia
- Molecular
Diagnostics and Personalized Therapeutics Unit, University of Ha’il, P.O. Box 2440, Ha’il 81451, Saudi Arabia
| | - Walid Sabri Hamadou
- Department
of Biology, College of Science, University
of Ha’il, P.O. Box 2440, Ha’il 81451, Saudi Arabia
- Molecular
Diagnostics and Personalized Therapeutics Unit, University of Ha’il, P.O. Box 2440, Ha’il 81451, Saudi Arabia
| | - Juhi Saxena
- Department
of Biotechnology, University Institute of Biotechnology, Chandigarh University, Gharuan, NH-95, Chandigarh State Hwy, Ludhiana, Punjab 140413, India
| | - Bharath K. Sundararaj
- School
of Dental Medicine, Department of Cellular and Molecular Biology, Boston University, Medical Campus Boston, Boston, Massachusetts 02215, United States
| | - Mejdi Snoussi
- Department
of Biology, College of Science, University
of Ha’il, P.O. Box 2440, Ha’il 81451, Saudi Arabia
- Molecular
Diagnostics and Personalized Therapeutics Unit, University of Ha’il, P.O. Box 2440, Ha’il 81451, Saudi Arabia
| | - Riadh Badraoui
- Department
of Biology, College of Science, University
of Ha’il, P.O. Box 2440, Ha’il 81451, Saudi Arabia
- Molecular
Diagnostics and Personalized Therapeutics Unit, University of Ha’il, P.O. Box 2440, Ha’il 81451, Saudi Arabia
| | - Mohd Adnan
- Department
of Biology, College of Science, University
of Ha’il, P.O. Box 2440, Ha’il 81451, Saudi Arabia
- Molecular
Diagnostics and Personalized Therapeutics Unit, University of Ha’il, P.O. Box 2440, Ha’il 81451, Saudi Arabia
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5
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Hegedus D, Coutu C, Gjetvaj B, Hannoufa A, Harrington M, Martin S, Parkin IAP, Perera S, Wanasundara J. Genetic variation and structural diversity in major seed proteins among and within Camelina species. PLANTA 2022; 256:93. [PMID: 36201059 PMCID: PMC9537204 DOI: 10.1007/s00425-022-03998-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 09/12/2022] [Indexed: 06/16/2023]
Abstract
Genetic variation in seed protein composition, seed protein gene expression and predictions of seed protein physiochemical properties were documented in C. sativa and other Camelina species. Seed protein diversity was examined in six Camelina species (C. hispida, C. laxa, C. microcarpa, C. neglecta, C. rumelica and C. sativa). Differences were observed in seed protein electrophoretic profiles, total seed protein content and amino acid composition between the species. Genes encoding major seed proteins (cruciferins, napins, oleosins and vicilins) were catalogued for C. sativa and RNA-Seq analysis established the expression patterns of these and other genes in developing seed from anthesis through to maturation. Examination of 187 C. sativa accessions revealed limited variation in seed protein electrophoretic profiles, though sufficient to group the majority into classes based on high MW protein profiles corresponding to the cruciferin region. C. sativa possessed four distinct types of cruciferins, named CsCRA, CsCRB, CsCRC and CsCRD, which corresponded to orthologues in Arabidopsis thaliana with members of each type encoded by homeologous genes on the three C. sativa sub-genomes. Total protein content and amino acid composition varied only slightly; however, RNA-Seq analysis revealed that CsCRA and CsCRB genes contributed > 95% of the cruciferin transcripts in most lines, whereas CsCRC genes were the most highly expressed cruciferin genes in others, including the type cultivar DH55. This was confirmed by proteomics analyses. Cruciferin is the most abundant seed protein and contributes the most to functionality. Modelling of the C. sativa cruciferins indicated that each type possesses different physiochemical attributes that were predicted to impart unique functional properties. As such, opportunities exist to create C. sativa cultivars with seed protein profiles tailored to specific technical applications.
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Affiliation(s)
- Dwayne Hegedus
- Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK, S7N 0X2, Canada.
- Department of Food and Bioproduct Sciences, University of Saskatchewan, Saskatoon, SK, Canada.
| | - Cathy Coutu
- Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK, S7N 0X2, Canada
| | - Branimir Gjetvaj
- Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK, S7N 0X2, Canada
| | | | - Myrtle Harrington
- Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK, S7N 0X2, Canada
| | - Sara Martin
- Agriculture and Agri-Food Canada, London, ON, Canada
| | - Isobel A P Parkin
- Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK, S7N 0X2, Canada
| | - Suneru Perera
- Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK, S7N 0X2, Canada
- Department of Food and Bioproduct Sciences, University of Saskatchewan, Saskatoon, SK, Canada
| | - Janitha Wanasundara
- Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK, S7N 0X2, Canada
- Department of Food and Bioproduct Sciences, University of Saskatchewan, Saskatoon, SK, Canada
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The repertoire of the elongation of very long-chain fatty acids (Elovl) protein family is conserved in tambaqui (Colossoma macropomum): Gene expression profiles offer insights into the sexual differentiation process. Comp Biochem Physiol B Biochem Mol Biol 2022; 261:110749. [PMID: 35470007 DOI: 10.1016/j.cbpb.2022.110749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 04/18/2022] [Accepted: 04/19/2022] [Indexed: 11/24/2022]
Abstract
Elongation of very long-chain fatty acids (Elovl) proteins are critical players in the regulation of the length of a fatty acid. At present, eight members of the Elovl family (Elovl1-8), displaying a characteristic fatty acid substrate specificity, have been identified in vertebrates, including teleost fish. In general, Elovl1, Elovl3, Elovl6 and Elovl7 exhibit a substrate preference for saturated and monounsaturated fatty acids, while Elovl2, Elovl4, Elovl5 and Elovl8 use polyunsaturated fatty acids (PUFA) as substrates. PUFA elongases have received considerable attention in aquatic animals due to their involvement in the conversion of C18 PUFAs to long-chain polyunsaturated fatty acids (LC-PUFA). Here, we identified the full repertoire of elovl genes in the tambaqui Colossoma macropomum genome. A detailed phylogenetic and synteny analysis suggests a conservation of these genes among teleosts. Furthermore, based on RNAseq gene expression data, we discovered a gender bias expression of elovl genes during sex differentiation of tambaqui, toward future males. Our findings suggest a role of Elovl enzymes and fatty acid metabolism in tambaqui sexual differentiation.
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Genome-wide characterization of the Elovl gene family in Gymnocypris przewalskii and their potential roles in adaptation to cold temperature. Comp Biochem Physiol B Biochem Mol Biol 2022; 262:110759. [PMID: 35605755 DOI: 10.1016/j.cbpb.2022.110759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 05/01/2022] [Accepted: 05/17/2022] [Indexed: 11/21/2022]
Abstract
The elongase of the very long-chain fatty acids (Elovls) gene family in fish has more diversity than in other vertebrates, which plays several critical roles in fatty acid synthesis and low-temperature stress adaptation. Gymnocypris przewalskii settles in plateau lakes with cold and resource-poor settings, and the evolution and function of Elovl genes in this fish are unknown. In the study, to identify the Elovl genes in G. przewalskii, the genome-wide identification and phylogenetic analysis of the gene members have been conducted with the expression profile of different tissues under cold stress. Fatty acid compositions, meanwhile, were detected in both the hepatopancreas and skeletal muscle during cold adaptation. A total of 21 Elovl members have been identified from the genome of G. przewalskii, belonging to Elovl1, Elovl2, Elovl4, Elovl5, Elovl6, Elovl7, and Elovl8 subgroups, with conserved ELO domain and four common motifs. Phylogenetic analysis revealed that subfamilies Elovl1 and Elovl7, Elov2, and Elovl5 have a closer genetic relationship, while the Elovl6 class was classed into an independent clade. Synteny analysis showed that whole-genome duplication, tandem duplicates, and gene conversion could drive the Elovls family expansion in G. przewalskii. The Ka/Ks and RELAX analysis showed distinguishing positive selection traces in ORF sequences of gpElovl2. Transcriptional data showed that different gpElovl subtypes exhibited a tissue-specific expression. Subtypes gpElovl1a, gpElovl2 and gpElovl6l were highly expressed induced by cold stress, as well as fatty acid metabolism-related genes, including Acyl-CoA synthetase long-chain gene (Ascl1a-1) and Stearyl-CoA desaturase gene (Scd1a-1). In addition, monounsaturated fatty acid (MUFA) and polyunsaturated fatty acid (PUFA) contents of the hepatopancreas and skeletal muscle were significantly increased under 15-day cold stress. These results provide a better understanding of fish Elovl genes and their roles in cold adaptation.
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Qin Y, He L, Wang Y, Li D, Chen W, Ye J. Growth performance, fatty acid composition, and lipid metabolism are altered in groupers ( Epinephelus coioides) by dietary fish oil replacement with palm oil. ANIMAL NUTRITION (ZHONGGUO XU MU SHOU YI XUE HUI) 2022; 8:102-113. [PMID: 34977380 PMCID: PMC8669253 DOI: 10.1016/j.aninu.2021.04.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 04/19/2021] [Accepted: 04/25/2021] [Indexed: 11/24/2022]
Abstract
In this study, we conducted a 56-d feeding trial to investigate the effects of replacing the fish oil (FO) with palm oil (PO) on the performance, tissue fatty acid (FA) composition, and mRNA levels of genes related to hepatic lipid metabolism in grouper (Epinephelus coioides). Five isolipidic (13% crude lipid) and isonitrogenous (48% CP) diets were formulated by incrementally adding PO to the control diet (25% fish meal and 9% added FO) to replace FO in the control diets. Triplicate groups of 30 groupers (initial weight: 12.6 ± 0.1 g) were fed one of the diets twice daily, to apparent satiety. The replacement of FO with 50% PO revealed maximum growth without affecting the performance and whole-body proximate compositions, and replacing FO with 100% PO revealed a comparable (P > 0.05) growth with that of the control diet, suggesting PO as a suitable alternative to FO. The analysis of FA profiles in the dorsal muscle and liver though reflected the FA profile of the diet, PO substitutions above 50% could compromise (P < 0.05) the FA profile in the liver and flesh of the fish species in comparison with the control diet. Furthermore, the mRNA levels of FAS, G6PD, LPL, PPARΑ, and Δ6FAD genes in the liver had positive linear and/or quadratic responses, but the SCD, HSL, ATGL, FABP, SREBP-1C and ELOVL5 had the opposite trend, with increasing dietary PO inclusion levels, whereas the mRNA level of ACC was not affected by dietary treatments. The optimal level of PO substitution for FO was estimated to be 47.1% of the feed, based on the regression analysis of percent weight gains against dietary PO inclusion levels; however, it might affect the FA profile in the liver and flesh of the fish species, and further study is required to investigate whether the changes in tissue FA composition will affect the welfare and market value over a production cycle of grouper.
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Affiliation(s)
| | | | - Yanfei Wang
- Xiamen Key Laboratory for Feed Quality Testing and Safety Evaluation, Fisheries College of Jimei University, Xiamen 361021, China
| | - Dong Li
- Xiamen Key Laboratory for Feed Quality Testing and Safety Evaluation, Fisheries College of Jimei University, Xiamen 361021, China
| | - Weijun Chen
- Xiamen Key Laboratory for Feed Quality Testing and Safety Evaluation, Fisheries College of Jimei University, Xiamen 361021, China
| | - Jidan Ye
- Xiamen Key Laboratory for Feed Quality Testing and Safety Evaluation, Fisheries College of Jimei University, Xiamen 361021, China
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Evolution and Functional Characteristics of the Novel elovl8 That Play Pivotal Roles in Fatty Acid Biosynthesis. Genes (Basel) 2021; 12:genes12081287. [PMID: 34440461 PMCID: PMC8392482 DOI: 10.3390/genes12081287] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 08/15/2021] [Accepted: 08/18/2021] [Indexed: 12/20/2022] Open
Abstract
Elongation of very long-chain fatty acid (Elovl) proteins are key enzymes that catalyze the rate-limiting step in the fatty acid elongation pathway. The most recently discovered member of the Elovl family, Elovl8, has been proposed to be a fish-specific elongase with two gene paralogs described in teleosts. However, the biological functions of Elovl8 are still to be elucidated. In this study, we showed that in contrast to previous findings, elovl8 is not unique to teleosts, but displays a rather unique and ample phylogenetic distribution. For functional determination, we generated elovl8a (elovl8a−/−) and elovl8b (elovl8b−/−) zebrafish using CRISPR/Cas9 technology. Fatty acid composition in vivo and zebrafish liver cell experiments suggest that the substrate preference of Elovl8 overlapped with other existing Elovl enzymes. Zebrafish Elovl8a could elongate the polyunsaturated fatty acids (PUFAs) C18:2n-6 and C18:3n-3 to C20:2n-6 and C20:3n-3, respectively. Along with PUFA, zebrafish Elovl8b also showed the capacity to elongate C18:0 and C20:1. Gene expression quantification suggests that Elovl8a and Elovl8b may play a potentially important role in fatty acid biosynthesis. Overall, our results provide novel insights into the function of Elovl8a and Elovl8b, representing additional fatty acid elongases not previously described in chordates.
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De la Cruz-Alvarado FJ, Álvarez-González CA, Llera-Herrera R, Monroig Ó, Kabeya N, Rodríguez-Morales S, Concha-Frias B, Guerrero-Zárate R, Jiménez-Martínez LD, Peña-Marín ES. Expression of long-chain polyunsaturated fatty acids biosynthesis genes during the early life-cycle stages of the tropical gar Atractosteus tropicus. Comp Biochem Physiol B Biochem Mol Biol 2021; 256:110628. [PMID: 34052410 DOI: 10.1016/j.cbpb.2021.110628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 05/05/2021] [Accepted: 05/25/2021] [Indexed: 10/21/2022]
Abstract
Long-chain (≥C20) polyunsaturated fatty acids (LC-PUFA), including eicosapentaenoic acid (EPA, 20:5n-3), arachidonic acid (ARA, 20:4n-6) and docosahexaenoic acid (DHA, 22:6n-3), are essential in multiple physiological processes, especially during early development of vertebrates. LC-PUFA biosynthesis is achieved by two key families of enzymes, fatty acyl desaturases (Fads) and elongation of very long-chain fatty acid (Elovl). The present study determined the expression patterns of genes encoding desaturases (fads1 and fads2) and elongases (elovl2 and elovl5) involved in the LC-PUFA biosynthesis during early life-stages of the tropical gar Atractosteus tropicus. We further analyzed the fatty acid profiles during early development of A. tropicus to evaluate the impact of Fads and Elovl enzymatic activities. Specific oligonucleotides were designed from A. tropicus transcriptome to perform qPCR (quantitative polymerase chain reaction) on embryonic and larval stages, along with several organs (intestine, white muscle, brain, liver, heart, mesenteric adipose, kidney, gill, swim bladder, stomach, and spleen) collected from juvenile specimens. Fatty acid content of feeds and embryonic and larval stages were analyzed. Results show that fads1, fads2, elovl2 and elovl5 expression was detected from embryonic stages with expression peaks from day 15 post hatching, which could be related to transcriptional and dietary factors. Moreover, fads1, fads2 and elovl2 showed a higher expression in intestine, while elovl5 showed a higher expression in liver, suggesting that the tropical gar activates its LC-PUFA biosynthetic machinery to produce ARA, EPA and DHA to satisfy physiological demands at crucial developmental milestones during early development.
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Affiliation(s)
- Fanny Janet De la Cruz-Alvarado
- Laboratorio de Acuicultura Tropical, DACBIOL-UJAT, Carretera Villahermosa-Cárdenas KM 0.5, C.P.86139 Villahermosa, Tabasco, Mexico
| | - Carlos A Álvarez-González
- Laboratorio de Acuicultura Tropical, DACBIOL-UJAT, Carretera Villahermosa-Cárdenas KM 0.5, C.P.86139 Villahermosa, Tabasco, Mexico
| | - Raúl Llera-Herrera
- Instituto de Ciencias del Mar y Limnología - Unidad Académica Mazatlán, Universidad Nacional Autónoma de México, Joel Montes Camarena S/N, PO Box 811, Mazatlán, Sinaloa, Mexico
| | - Óscar Monroig
- Instituto de Acuicultura Torre de la Sal, Consejo Superior de Investigaciones Científicas (IATS-CSIC), 12595 Ribera de Cabanes, Castellón, Spain
| | - Naoki Kabeya
- Department of Marine Biosciences, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato-ku, Tokyo 108-8477, Japan
| | - Sergio Rodríguez-Morales
- Facultad de Química, Universidad Nacional Autónoma de México, Unidad de Química-Sisal, Puerto de Abrigo s/n, Sisal, Yucatán, Mexico
| | - Bartolo Concha-Frias
- División Académica Multidisciplinaria de Jalpa de Méndez, Universidad Juárez Autónoma de Tabasco, Carretera Nacajuca-Jalpa de Méndez R/a Rivera Alta, C.P. 86200 Jalpa de Méndez, Tabasco, Mexico
| | - Rocío Guerrero-Zárate
- Laboratorio de Acuicultura Tropical, DACBIOL-UJAT, Carretera Villahermosa-Cárdenas KM 0.5, C.P.86139 Villahermosa, Tabasco, Mexico
| | - Luis D Jiménez-Martínez
- División Académica Multidisciplinaria de Jalpa de Méndez, Universidad Juárez Autónoma de Tabasco, Carretera Nacajuca-Jalpa de Méndez R/a Rivera Alta, C.P. 86200 Jalpa de Méndez, Tabasco, Mexico.
| | - Emyr Saúl Peña-Marín
- Laboratorio de Acuicultura Tropical, DACBIOL-UJAT, Carretera Villahermosa-Cárdenas KM 0.5, C.P.86139 Villahermosa, Tabasco, Mexico; Consejo Nacional de Ciencia y Tecnología, CDMX, Mexico.
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11
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Ramalingam V, Hwang I. Identification of Meat Quality Determining Marker Genes in Fibroblasts of Bovine Muscle Using Transcriptomic Profiling. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:3776-3786. [PMID: 33730852 DOI: 10.1021/acs.jafc.0c06973] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In the present study, we comparatively analyzed the transcriptomic profiling of fibroblasts derived from two different muscles, biceps femoris and longissimus dorsi with significant difference in the meat quality and tenderness. EBSeq algorithm was applied to analyze the data, and genes were considered to be significantly differentially expressed if the false discovery rate value was <0.05, the P value was <0.01, and the fold change was >0.585. The results revealed that 253 genes were differentially expressed genes (DEGs) (170 genes were upregulated, and 83 were downregulated) and more than 100 DEGs were probably associated with intramuscular fat deposition, tenderness, and toughness, which are driving the meat quality and were involved in biological processes such as collagen synthesis, cell differentiation, and muscle tissue and fiber development; molecular functions such as chemokine activity and collagen activity; cellular components such as cytoplasm and myofibril; and pathways such as collagen signaling and metabolic pathways. A gene-act network and a co-expression network revealed the close relationship between intramuscular fat deposition and meat tenderness. The expressions of 20 DEGs were validated by real-time PCR, and the results suggested that the DEGs are correlated with RNA-seq data and play crucial roles in muscle growth, development processes, toughness, and tenderness of the meat. Together, the genome-wide transcriptome analysis revealed that various genes are responsible for toughness and tenderness variance in the difference muscles of beef.
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Affiliation(s)
- Vaikundamoorthy Ramalingam
- Centre for Natural Products & Traditional Knowledge, CSIR-Indian Institute of Chemica Technology, Hyderabad, Telangana 500007, India
- Department of Animal Science, Jeonbuk National University, Jeonju 561-756, Republic of Korea
| | - Inho Hwang
- Department of Animal Science, Jeonbuk National University, Jeonju 561-756, Republic of Korea
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12
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Liu G, Ding Y, Chen Y, Yang Y. Effect of energy intake and L-carnitine on fattening performance, carcass traits, meat quality, blood metabolites, and gene expression of lamb. Small Rumin Res 2020. [DOI: 10.1016/j.smallrumres.2019.106025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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13
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Ropelewska E, Jankowski KJ. Thermophysical properties of camelina (
Camelina sativa
(L.) Crantz) seeds fertilized with nitrogen. J FOOD PROCESS ENG 2019. [DOI: 10.1111/jfpe.13161] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ewa Ropelewska
- Department of Systems Engineering, Faculty of EngineeringUniversity of Warmia and Mazury in Olsztyn Olsztyn Poland
| | - Krzysztof J. Jankowski
- Department of Agrotechnology, Agricultural Production Management and Agribusiness, Faculty of Environmental Management and AgricultureUniversity of Warmia and Mazury in Olsztyn Olsztyn Poland
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14
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Tinti E, Geay F, Lopes Rodrigues M, Kestemont P, Perpète EA, Michaux C. Molecular cloning and 3D model of a fatty-acid elongase in a carnivorous freshwater teleost, the European perch ( Perca fluviatilis). 3 Biotech 2019; 9:242. [PMID: 31168435 PMCID: PMC6542919 DOI: 10.1007/s13205-019-1773-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 05/20/2019] [Indexed: 01/30/2023] Open
Abstract
The European perch (Perca fluviatilis) is a carnivorous freshwater fish able to metabolise polyunsaturated fatty acids (PUFA) into highly unsaturated fatty acids (HUFA). This makes it a potential candidate for sustainable aquaculture development. In this study, special attention is given to the fatty-acid elongase (ELOVL) family, one of the two enzymatic systems implied in the HUFA biosynthesis. Structural information on European perch enzyme converting PUFA into HUFA is obtained by both molecular cloning and in silico characterization of an ELOVL5-like elongase from P. fluviatilis (pfELOVL). The full-length cDNA sequence consists of a 885-base pair Open Reading Frame coding for a 294-amino acid protein. Phylogenetic analysis and sequence alignment with fish elongases predict the pfELOVL clusters within the ELOVL5 sub-group. The amino-acid sequence displays the typical ELOVL features: several transmembrane α helices (TMH), an endoplasmic reticulum (ER) retention signal, and four "conserved boxes" involved in the catalytic site. In addition, the topology analysis predicts a 7-TMH structure addressed in the ER membrane. A 3D model of the protein embedded in an ER-like membrane environment is also provided using de novo modelling and molecular dynamics. From docking studies, two putative enzyme-substrate-binding modes, including H bonds and CH-π interactions, emphasize the role of specific residues in the "conserved boxes".
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Affiliation(s)
- Emmanuel Tinti
- Laboratoire de Chimie Physique des Biomolécules, UCPTS, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium
- Institute of Life-Earth-Environment, University of Namur, Namur, Belgium
| | | | - Maximilien Lopes Rodrigues
- Laboratoire de Chimie Physique des Biomolécules, UCPTS, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium
- Namur Institute of Structures Matter, University of Namur, Namur, Belgium
| | - Patrick Kestemont
- Institute of Life-Earth-Environment, University of Namur, Namur, Belgium
- Research Unit in Environmental and Evolutionary Biology, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium
| | - Eric A. Perpète
- Laboratoire de Chimie Physique des Biomolécules, UCPTS, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium
- Institute of Life-Earth-Environment, University of Namur, Namur, Belgium
- Namur Institute of Structures Matter, University of Namur, Namur, Belgium
| | - Catherine Michaux
- Laboratoire de Chimie Physique des Biomolécules, UCPTS, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium
- Namur Institute of Structures Matter, University of Namur, Namur, Belgium
- Namur Research Institute for Life Sciences, University of Namur, Namur, Belgium
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15
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Panserat S, Marandel L, Seiliez I, Skiba-Cassy S. New Insights on Intermediary Metabolism for a Better Understanding of Nutrition in Teleosts. Annu Rev Anim Biosci 2019; 7:195-220. [DOI: 10.1146/annurev-animal-020518-115250] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The rapid development of aquaculture production throughout the world over the past few decades has led to the emergence of new scientific challenges to improve fish nutrition. The diet formulations used for farmed fish have been largely modified in the past few years. However, bottlenecks still exist in being able to suppress totally marine resources (fish meal and fish oil) in diets without negatively affecting growth performance and flesh quality. A better understanding of fish metabolism and its regulation by nutrients is thus mandatory. In this review, we discuss four fields of research that are highly important for improving fish nutrition in the future: ( a) fish genome complexity and subsequent consequences for metabolism, ( b) microRNAs (miRNAs) as new actors in regulation of fish metabolism, ( c) the role of autophagy in regulation of fish metabolism, and ( d) the nutritional programming of metabolism linked to the early life of fish.
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Affiliation(s)
- S. Panserat
- INRA, University of Pau & Pays de l'Adour, E2S UPPA, UMR1419 Nutrition, Metabolisme, Aquaculture, Aquapôle, F-64310 Saint-Pée-sur-Nivelle, France
| | - L. Marandel
- INRA, University of Pau & Pays de l'Adour, E2S UPPA, UMR1419 Nutrition, Metabolisme, Aquaculture, Aquapôle, F-64310 Saint-Pée-sur-Nivelle, France
| | - I. Seiliez
- INRA, University of Pau & Pays de l'Adour, E2S UPPA, UMR1419 Nutrition, Metabolisme, Aquaculture, Aquapôle, F-64310 Saint-Pée-sur-Nivelle, France
| | - S. Skiba-Cassy
- INRA, University of Pau & Pays de l'Adour, E2S UPPA, UMR1419 Nutrition, Metabolisme, Aquaculture, Aquapôle, F-64310 Saint-Pée-sur-Nivelle, France
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16
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Betancor MB, Olsen RE, Marandel L, Skulstad OF, Madaro A, Tocher DR, Panserat S. Impact of Dietary Carbohydrate/Protein Ratio on Hepatic Metabolism in Land-Locked Atlantic Salmon ( Salmo salar L.). Front Physiol 2018; 9:1751. [PMID: 30574094 PMCID: PMC6291493 DOI: 10.3389/fphys.2018.01751] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 11/20/2018] [Indexed: 01/01/2023] Open
Abstract
A common-garden experiment was carried out to compare two genetically distinct strains of Atlantic salmon (Salmo salar) fed diets with either high (CHO) or low (NoCHO) digestible carbohydrate (starch). Twenty salmon from either a commercial farmed strain (F) or a land-locked population (G) were placed in two tanks (10 fish of each population in each tank) and fed either CHO or NoCHO feeds. At the end of the experiment fish were fasted for 8 h, euthanized and blood and liver collected. Both diet and population had an effect on circulating glucose levels with G showing hypoglycaemia and dietary starch increasing this parameter. In contrast, G showed increased plasma triacylglycerol levels regardless of dietary treatment suggesting faster conversion of glucose to triacylglycerol. This different ability to metabolize dietary starch among strains was also reflected at a molecular (gene) level as most of the metabolic pathways evaluated were mainly affected by the factor population rather than by diet. The data are promising and suggest different regulatory capacities toward starch utilization between land-locked salmon and the farmed stock. Further analyses are necessary in order to fully characterize the capacity of land-locked salmon to utilize dietary carbohydrate.
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Affiliation(s)
- Mónica B Betancor
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, United Kingdom
| | - Rolf E Olsen
- Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway
| | - Lucie Marandel
- INRA-UPPA, UMR 1419, Nutrition Metabolism and Aquaculture, Aquapôle, Institut National de la Recherche Agronomique, Paris, France
| | | | | | - Douglas R Tocher
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, United Kingdom
| | - Stephane Panserat
- INRA-UPPA, UMR 1419, Nutrition Metabolism and Aquaculture, Aquapôle, Institut National de la Recherche Agronomique, Paris, France
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17
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Xu H, Liao Z, Wang C, Wei Y, Liang M. Hepatic transcriptome of the euryhaline teleost Japanese seabass (Lateolabrax japonicus) fed diets characterized by α-linolenic acid or linoleic acid. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS 2018; 29:106-116. [PMID: 30465939 DOI: 10.1016/j.cbd.2018.11.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 11/04/2018] [Accepted: 11/04/2018] [Indexed: 11/16/2022]
Abstract
To investigate the different effects of dietary α-linolenic acid (ALA) and linoleic acid (LA) on the euryhaline fish Japanese seabass, a feeding trial followed by hepatic transcriptome assay was conducted. Two experimental diets containing 10% LA-rich sunflower seed oil (diet LA) or 10% ALA-rich perilla oil (diet ALA) were used in the feeding trial. LA and ALA in diets were characteristically incorporated into fish tissues while no significant difference was observed in growth performance and body proximate composition between groups LA and ALA. Compared to LA, ALA up-regulated transcription of 49 unigenes and down-regulated those of 311 unigenes. Quantitative RT-PCR studies on eight lipid metabolism-related genes and seven randomly selected genes were conducted to validate the transcriptomic results. Lipid metabolism-related genes ApoA1, ApoA4, ApoE, FABP1, FABP3, FABP4, FATP6, and DGAT1, as well as ribosomal proteins L9e, L13e, and S4e, were transcriptionally down-regulated by ALA. The differentially expressed genes (DEGs) were primarily enriched in Gene Ontology terms such as Lipid transport, Protein metabolic process, and Ribosome biogenesis, as well as in KEGG pathways such as Complement and coagulation cascades and Ribosome. The Protein-Protein Interaction (PPI) network based on the peptide biosynthesis-related DEGs showed that ribosomal proteins such as SAe, L4e, S4e, L15e, L9e, and L13Ae had high betweenness centrality in the dietary regulation of peptide biosynthetic processes. In conclusion, under the present experimental conditions, a high level of dietary α-linolenic acid tended to suppress lipid transport and protein biosynthetic processes in the liver of Japanese seabass at the gene expression level.
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Affiliation(s)
- Houguo Xu
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 106 Nanjing Road, Qingdao, Shandong 266071, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao, Shandong 266237, China
| | - Zhangbin Liao
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 106 Nanjing Road, Qingdao, Shandong 266071, China
| | - Chengqiang Wang
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 106 Nanjing Road, Qingdao, Shandong 266071, China
| | - Yuliang Wei
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 106 Nanjing Road, Qingdao, Shandong 266071, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao, Shandong 266237, China
| | - Mengqing Liang
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 106 Nanjing Road, Qingdao, Shandong 266071, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao, Shandong 266237, China.
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18
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Chen J, Cui Y, Yan J, Jiang J, Cao X, Gao J. Molecular characterization of elongase of very long-chain fatty acids 6 ( elovl6 ) genes in Misgurnus anguillicaudatus and their potential roles in adaptation to cold temperature. Gene 2018; 666:134-144. [DOI: 10.1016/j.gene.2018.05.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Revised: 03/30/2018] [Accepted: 05/03/2018] [Indexed: 01/09/2023]
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19
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Jin S, Park HB, Seo D, Choi NR, Manjula P, Cahyadi M, Jung S, Jo C, Lee JH. Identification of quantitative trait loci for the fatty acid composition in Korean native chicken. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2018; 31:1134-1140. [PMID: 29381899 PMCID: PMC6043436 DOI: 10.5713/ajas.17.0781] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 12/08/2017] [Accepted: 01/20/2018] [Indexed: 01/20/2023]
Abstract
OBJECTIVE Fatty acid composition is one of the most important meat quality traits because it can contribute to functional, sensorial, and nutritional factors. In this study, quantitative trait locus (QTL) analyses for fatty acid composition traits were investigated in thigh and breast meat of Korean native chicken (KNC). METHODS In total, 18 fatty acid composition traits were investigated from each meat sample using 83 parents, and 595 F1 chicks of 20 week old. Genotype assessment was performed using 171 informative DNA markers on 26 autosomes. The KNC linkage map was constructed by CRI-MAP software, which calculated genetic distances, with map orders between markers. The half-sib and full-sib QTL analyses were performed using GridQTL and SOLAR programs, respectively. RESULTS In total, 30 QTLs (12 in the thigh and 18 in the breast meat) were detected by the half-sib analysis and 7 QTLs (3 in the thigh and 4 in the breast meat) were identified by the full-sib analysis. CONCLUSION With further verification of the QTL regions using additional markers and positional candidate gene studies, these results can provide valuable information for determining causative mutations affecting the fatty acid composition of KNC meat. Moreover, these findings may aid in the selection of birds with favorable fatty acid composition traits.
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Affiliation(s)
- Shil Jin
- Division of Animal & Dairy Science, Chungnam National University, Daejeon 34134,
Korea
| | - Hee Bok Park
- Subtropical Livestock Research Institute, National Institute of Animal Science, Jeju 63242,
Korea
| | - Dongwon Seo
- Division of Animal & Dairy Science, Chungnam National University, Daejeon 34134,
Korea
| | - Nu Ri Choi
- Division of Animal & Dairy Science, Chungnam National University, Daejeon 34134,
Korea
| | - Prabuddha Manjula
- Division of Animal & Dairy Science, Chungnam National University, Daejeon 34134,
Korea
| | - Muhammad Cahyadi
- Department of Animal Science, Faculty of Agriculture, Sebelas Maret University, Surakarta 57126,
Indonesia
| | - Samooel Jung
- Division of Animal & Dairy Science, Chungnam National University, Daejeon 34134,
Korea
| | - Cheorun Jo
- Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute of Agriculture and Life Science, Seoul National University, Seoul 08826,
Korea
| | - Jun Heon Lee
- Division of Animal & Dairy Science, Chungnam National University, Daejeon 34134,
Korea
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20
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Arain SQ, Talpur FN, Channa NA, Ali MS, Afridi HI. Serum lipids as an indicator for the alteration of liver function in patients with hepatitis B. Lipids Health Dis 2018; 17:36. [PMID: 29506525 PMCID: PMC5838863 DOI: 10.1186/s12944-018-0683-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Accepted: 02/19/2018] [Indexed: 12/13/2022] Open
Abstract
Background Hepatitis B virus (HBV) exerts an intense impact on host lipid metabolism. Hence the aim of present study is to determine metabolic derangement that occurred in subjects suffering from hepatitis B patients. Methods The fasting blood samples were collected from hepatitis B patients (n = 50) attended in Taluka hospital TandoAdam, Sindh with age and gender matched controls (n = 50). Serum lipid profile and fatty acid (FA) composition were analyzed by micro-lab and gas chromatography. Results The hepatitis B patients have significantly lower level (p < 0.01) of lipid profile including total cholesterol (TC), triacylglyceride (TAG), high density lipoprotein-C (HDL-C) very low density lipoprotein-cholesterol (VLDL-C), low density lipoprotein-cholesterol (LDL-C), and total lipid (TL) in comparison to controls, indicating hypolipidemia in patients. The result of total FA composition of HBV patients in comparison to controls reveal that myristic, palmitic, docosahexaenoic acids were significantly (p < 0.05) higher, while linoleic, eicosatrienoic, arachidonic, eicosapentaenoic acids were lower in HBV patients in comparison to controls. The elongase, ∆5 and ∆6-desaturase enzymes activities were found lower, while ∆9-desaturase activity was higher in hepatitis B patients as compared to controls, which indicates the impaired lipid metabolism. Conclusion The serum saturated fatty acid (SFA) and monounsaturated fatty acid (MUFA) were increased while polyunsaturated fatty acid (PUFA) was reduced in both total and free form in hepatitis B patients due to altered activities of enzyme desaturases with impaired PUFA metabolism and non-enzymatic oxidation. Electronic supplementary material The online version of this article (10.1186/s12944-018-0683-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Sadia Qamar Arain
- National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, 76080, Pakistan.,Institute of Biochemistry University of Sindh, Jamshoro, Pakistan
| | - Farah Naz Talpur
- National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, 76080, Pakistan.
| | | | | | - Hassan Imran Afridi
- National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, 76080, Pakistan
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21
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Fadhlaoui M, Pierron F, Couture P. Temperature and metal exposure affect membrane fatty acid composition and transcription of desaturases and elongases in fathead minnow muscle and brain. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 148:632-643. [PMID: 29132009 DOI: 10.1016/j.ecoenv.2017.10.040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 09/25/2017] [Accepted: 10/19/2017] [Indexed: 06/07/2023]
Abstract
In this study, we tested the hypothesis that metal exposure affected the normal thermal response of cell membrane FA composition and of elongase and desaturase gene transcription levels. To this end, muscle and brain membrane FA composition and FA desaturase (fads2, degs2 and scd2) and elongase (elovl2, elovl5 and elovl6) gene transcription levels were analyzed in fathead minnows (Pimephales promelas) acclimated for eight weeks to 15, 25 or 30°C exposed or not to cadmium (Cd, 6μg/l) or nickel (Ni, 450 6μg/l). The response of membrane FA composition to temperature variations or metal exposure differed between muscle and brain. In muscle, an increase of temperature induced a decrease of polyunsaturated FA (PUFA) and an increase of saturated FA (SFA) in agreement with the current paradigm. Although a similar response was observed in brain between 15 and 25°C, at 30°C, brain membrane unsaturation was higher than predicted. In both tissues, metal exposure affected the normal thermal response of membrane FA composition. The transcription of desaturases and elongases was higher in the brain and varied with acclimation temperature and metal exposure but these variations did not generally reflect changes in membrane FA composition. The mismatch between gene transcription and membrane composition highlights that several levels of control other than gene transcription are involved in adjusting membrane FA composition, including post-transcriptional regulation of elongases and desaturases and de novo phospholipid biosynthesis. Our study also reveals that metal exposure affects the mechanisms involved in adjusting cell membrane FA composition in ectotherms.
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Affiliation(s)
- Mariem Fadhlaoui
- Institut National de la Recherche Scientifique, Centre Eau Terre Environnement, 490, rue de la Couronne, Québec QC Canada G1K 9A9
| | | | - Patrice Couture
- Institut National de la Recherche Scientifique, Centre Eau Terre Environnement, 490, rue de la Couronne, Québec QC Canada G1K 9A9.
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22
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Zhou H, Wang C. Purification and function analysis of the Δ-17 fatty acid desaturase with or without transmembrane domain. Exp Ther Med 2017; 14:2117-2125. [PMID: 28962132 PMCID: PMC5609165 DOI: 10.3892/etm.2017.4790] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Accepted: 04/11/2017] [Indexed: 11/05/2022] Open
Abstract
Fatty acid desaturation enzymes perform dehydrogenation reactions leading to the insertion of double bonds in fatty acids. ω-3 desaturase has an important role in converting ω-6 fatty acids into ω-3 fatty acids. Although genes for this desaturase have been identified, the enzymatic activity of Δ-17 with or without transmembrane domain, and the function of the Δ-17 desaturase is poorly understood. In the present study, a transgenic microorganism was used to clone the Δ-17 full length (Δ-17FL) and Δ-17 without transmembrane domain (Δ-17NT), the expression efficiency was improved and western blotting was used to detect the protein expression level. The purification of Δ-17 was precipitated using saturated ammonium sulfate solution, dissolved in phosphate buffered saline buffer, and then filtered using a 10 kDa ultrafiltration cube. Gas chromatography analysis was used to measure the effect of Δ-17NT or Δ-17FL expression on Pichia pastoris fatty acid composition. Furthermore, the function of Δ-17NT in HepG2 cells was measured and the mechanism was explored. It was demonstrated that Δ-17NT decreased cell growth and increased apoptosis in hepatocellular carcinoma cell lines in vitro. In conclusion, successful expression of high levels of recombinant Δ-17NT represents a critical step towards the elucidation of the function of membrane fatty acid desaturases.
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Affiliation(s)
- Haoyu Zhou
- Department of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430000, P.R. China
| | - Chengming Wang
- Department of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430000, P.R. China
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23
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Elongation of very Long-Chain (>C 24) Fatty Acids in Clarias gariepinus: Cloning, Functional Characterization and Tissue Expression of elovl4 Elongases. Lipids 2017; 52:837-848. [PMID: 28856549 PMCID: PMC5613102 DOI: 10.1007/s11745-017-4289-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 08/15/2017] [Indexed: 12/16/2022]
Abstract
Elongation of very long-chain fatty acid 4 (Elovl4) proteins participate in the biosynthesis of very long-chain (>C24) saturated and polyunsaturated fatty acids (FA). Previous studies have shown that fish possess two different forms of Elovl4, termed Elovl4a and Elovl4b. The present study aimed to characterize both molecularly and functionally two elovl4 cDNA from the African catfish Clarias gariepinus. The results confirmed that C. gariepinus possessed two elovl4-like elongases with high homology to two previously characterized Elovl4 from Danio rerio, and thus they were termed accordingly as Elovl4a and Elovl4b. The C. gariepinus Elovl4a and Elovl4b have open reading frames (ORF) of 945 and 915 base pairs, respectively, encoding putative proteins of 314 and 304 amino acids, respectively. Functional characterization in yeast showed both Elovl4 enzymes have activity towards all the PUFA substrates assayed (18:4n-3, 18:3n-6, 20:5n-3, 20:4n-6, 22:5n-3, 22:4n-6 and 22:6n-3), producing elongated products of up to C36. Moreover, the C. gariepinus Elovl4a and Elovl4b were able to elongate very long-chain saturated FA (VLC-SFA) as denoted by increased levels of 28:0 and longer FA in yeast transformed with elovl4 ORF compared to control yeast. These results confirmed that C. gariepinus Elovl4 play important roles in the biosynthesis of very long-chain FA. Tissue distribution analysis of elovl4 mRNAs showed both genes were widely expressed in all tissues analyzed, with high expression of elovl4a in pituitary and brain, whereas female gonad and pituitary had the highest expression levels for elovl4b.
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Betancor MB, Ortega A, de la Gándara F, Tocher DR, Mourente G. Lipid metabolism-related gene expression pattern of Atlantic bluefin tuna (Thunnus thynnus L.) larvae fed on live prey. FISH PHYSIOLOGY AND BIOCHEMISTRY 2017; 43:493-516. [PMID: 27815797 PMCID: PMC5374188 DOI: 10.1007/s10695-016-0305-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Accepted: 10/08/2016] [Indexed: 05/25/2023]
Abstract
The present study is the first to evaluate lipid metabolism in first-feeding Atlantic bluefin tuna (ABT; Thunnus thynnus L.) larvae fed different live prey including enriched rotifers Brachionus plicatilis and Acartia sp. copepod nauplii from 2 days after hatch. Understanding the molecular basis of lipid metabolism and regulation in ABT will provide insights to optimize diet formulations for this high-value species new to aquaculture. To this end, we investigated the effect of dietary lipid on whole larvae lipid class and fatty acid compositions and the expression of key genes involved in lipid metabolism in first feeding ABT larvae fed different live prey. Additionally, the expression of lipid metabolism genes in tissues of adult broodstock ABT was evaluated. Growth and survival data indicated that copepods were the best live prey for first feeding ABT and that differences in growth performance and lipid metabolism observed between larvae from different year classes could be a consequence of broodstock nutrition. In addition, expression patterns of lipid metabolic genes observed in ABT larvae in the trials could reflect differences in lipid class and fatty acid compositions of the live prey. The lipid nutritional requirements, including essential fatty acid requirements of larval ABT during the early feeding stages, are unknown, and the present study represents a first step in addressing these highly relevant issues. However, further studies are required to determine nutritional requirements and understand lipid metabolism during development of ABT larvae and to apply the knowledge to the commercial culture of this iconic species.
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Affiliation(s)
- Mónica B Betancor
- Institute of Aquaculture, University of Stirling, Stirling, Scotland, FK9 4LA, UK.
| | - Aurelio Ortega
- Planta Experimental de Cultivos Marinos, Instituto Español de Oceanografía (IEO), 30860 Puerto de Mazarrón (Murcia), Madrid, Spain
| | - Fernando de la Gándara
- Planta Experimental de Cultivos Marinos, Instituto Español de Oceanografía (IEO), 30860 Puerto de Mazarrón (Murcia), Madrid, Spain
| | - Douglas R Tocher
- Institute of Aquaculture, University of Stirling, Stirling, Scotland, FK9 4LA, UK
| | - Gabriel Mourente
- Departamento de Biología, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, 11510 Puerto Real, Cádiz, Spain
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Li Y, Chu Y, Yu L, Kang H, Zhou L. Transcriptomic analysis of Bama pig's liver in various nutritional states reveals a metabolic difference of fatty acids. Food Funct 2017; 8:3480-3490. [DOI: 10.1039/c7fo00937b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Both fasting and treatment with a high-fat diet (HFD) can dramatically change fat metabolism in the liver.
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Affiliation(s)
- Yixing Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources
- College of Animal Science and Technology
- Guangxi University
- Nanning
- P.R. China
| | - Yi Chu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources
- College of Animal Science and Technology
- Guangxi University
- Nanning
- P.R. China
| | - Lin Yu
- Hangzhou King Techina Feed Co
- Ltd
- Yuhang District, Hangzhou
- China
| | - Huifang Kang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources
- College of Animal Science and Technology
- Guangxi University
- Nanning
- P.R. China
| | - Lei Zhou
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources
- College of Animal Science and Technology
- Guangxi University
- Nanning
- P.R. China
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Hixson SM, Arts MT. Climate warming is predicted to reduce omega-3, long-chain, polyunsaturated fatty acid production in phytoplankton. GLOBAL CHANGE BIOLOGY 2016; 22:2744-2755. [PMID: 27070119 DOI: 10.1111/gcb.13295] [Citation(s) in RCA: 112] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 02/17/2016] [Accepted: 03/10/2016] [Indexed: 06/05/2023]
Abstract
Phytoplankton are the main source of energy and omega-3 (n-3) long-chain essential fatty acids (EFA) in aquatic ecosystems. Their growth and biochemical composition are affected by surrounding environmental conditions, including temperature, which continues to increase as a result of climate warming. Increasing water temperatures may negatively impact the production of EFA by phytoplankton through the process of homeoviscous adaptation. To investigate this, we conducted an exploratory data synthesis with 952 fatty acid (FA) profiles from six major groups of marine and freshwater phytoplankton. Temperature was strongly correlated with a decrease in the proportion of n-3 long-chain polyunsaturated FA (LC-PUFA) and an increase in omega-6 FA and saturated FA. Based on linear regression models, we predict that global n-3 LC-PUFA production will be reduced by 8.2% for eicosapentaenoic acid (EPA) and 27.8% for docosahexaenoic acid (DHA) with an increase in water temperature of 2.5 °C. Using a previously published estimate of the global production of EPA by diatoms, which contribute to most of the world's supply of EPA, we predict a loss of 14.2 Mt of EPA annually as a result of ocean warming. The n-3 LC-PUFA are vitally important for an array of key physiological functions in aquatic and terrestrial organisms, and these FA are mainly produced by phytoplankton. Therefore, reduced production of these EFA, as a consequence of climate warming, is predicted to negatively affect species that depend on these compounds for optimum physiological function. Such profound changes in the biochemical composition of phytoplankton cell membranes can lead to cascading effects throughout the world's ecosystems.
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Affiliation(s)
- Stefanie M Hixson
- Department of Chemistry and Biology, Ryerson University, 350 Victoria Street, Toronto, ON, Canada
| | - Michael T Arts
- Department of Chemistry and Biology, Ryerson University, 350 Victoria Street, Toronto, ON, Canada
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Long-chain polyunsaturated fatty acid biosynthesis in chordates: Insights into the evolution of Fads and Elovl gene repertoire. Prog Lipid Res 2016; 62:25-40. [DOI: 10.1016/j.plipres.2016.01.001] [Citation(s) in RCA: 242] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 12/28/2015] [Accepted: 01/01/2016] [Indexed: 01/01/2023]
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Guo Z, Wang Y, Feng X, Bao C, He Q, Bao L, Hao H, Wang Z. Rapamycin Inhibits Expression of Elongation of Very-long-chain Fatty Acids 1 and Synthesis of Docosahexaenoic Acid in Bovine Mammary Epithelial Cells. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2016; 29:1646-1652. [PMID: 26954224 PMCID: PMC5088386 DOI: 10.5713/ajas.15.0660] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2015] [Revised: 11/11/2015] [Accepted: 01/05/2016] [Indexed: 12/25/2022]
Abstract
Mammalian target of rapamycin complex 1 (mTORC1) is a central regulator of cell growth and metabolism and is sufficient to induce specific metabolic processes, including de novo lipid biosynthesis. Elongation of very-long-chain fatty acids 1 (ELOVL1) is a ubiquitously expressed gene and the product of which was thought to be associated with elongation of carbon (C) chain in fatty acids. In the present study, we examined the effects of rapamycin, a specific inhibitor of mTORC1, on ELOVL1 expression and docosahexaenoic acid (DHA, C22:6 n-3) synthesis in bovine mammary epithelial cells (BMECs). We found that rapamycin decreased the relative abundance of ELOVL1 mRNA, ELOVL1 expression and the level of DHA in a time-dependent manner. These data indicate that ELOVL1 expression and DHA synthesis are regulated by mTORC1 in BMECs.
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Affiliation(s)
- Zhixin Guo
- College of Life Science, Inner Mongolia University, Hohhot 010021, China
| | - Yanfeng Wang
- College of Life Science, Inner Mongolia University, Hohhot 010021, China
| | - Xue Feng
- College of Life Science, Inner Mongolia University, Hohhot 010021, China
| | - Chaogetu Bao
- College of Life Science, Inner Mongolia University, Hohhot 010021, China
| | - Qiburi He
- College of Life Science, Inner Mongolia University, Hohhot 010021, China
| | - Lili Bao
- College of Basic Medical Science, Inner Mongolia Medical University, Hohhot 010110, China
| | - Huifang Hao
- College of Life Science, Inner Mongolia University, Hohhot 010021, China
| | - Zhigang Wang
- College of Life Science, Inner Mongolia University, Hohhot 010021, China
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Li K, Østensen MA, Attramadal K, Winge P, Sparstad T, Bones AM, Vadstein O, Kjørsvik E, Olsen Y. Gene regulation of lipid and phospholipid metabolism in Atlantic cod (Gadus morhua) larvae. Comp Biochem Physiol B Biochem Mol Biol 2015; 190:16-26. [DOI: 10.1016/j.cbpb.2015.08.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 08/14/2015] [Accepted: 08/19/2015] [Indexed: 01/09/2023]
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Atlantic salmon (Salmo salar) liver transcriptome response to diets containing Camelina sativa products. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS 2015; 14:1-15. [PMID: 25681993 DOI: 10.1016/j.cbd.2015.01.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Revised: 01/26/2015] [Accepted: 01/26/2015] [Indexed: 01/13/2023]
Abstract
Due to increasing demand for fish oil (FO) and fish meal (FM) in aquafeeds, more sustainable alternatives such as plant-derived oils and proteins are needed. Camelina sativa products are viable feed ingredients given the high oil and crude protein content in the seed. Atlantic salmon were fed diets with complete or partial replacement of FO and/or FM with camelina oil (CO) and/or camelina meal (CM) in a 16-week trial [Control diet: FO; Test diets: 100% CO replacement of FO (100CO), or 100CO with solvent-extracted FM (100COSEFM), 10% CM (100CO10CM), or SEFM+10% CM (100COSEFM10CM)]. Diet composition, growth, and fatty acid analyses for this feeding trial were published previously. A 44K microarray experiment identified liver transcripts that responded to 100COSEFM10CM (associated with reduced growth) compared to controls, yielding 67 differentially expressed features (FDR<5%). Ten microarray-identified genes [cpt1, pcb, bar, igfbp-5b (2 paralogues), btg1, dnph1, lect-2, clra, klf9, and fadsd6a], and three additional genes involved in lipid metabolism [elovl2, elovl5 (2 paralogues), and fadsd5], were subjected to QPCR with liver templates from all 5 dietary treatments. Of the microarray-identified genes, only bar was not QPCR validated. Both igfbp-5b paralogues were significantly down-regulated, and fadsd6a was significantly up-regulated, in all 4 camelina-containing diet groups compared with controls. Multivariate statistics were used to correlate hepatic desaturase and elongase gene expression data with tissue fatty acid profiles, indicating the involvement of these genes in LC-PUFA biosynthesis. This nutrigenomic study provides molecular biomarkers for use in developing novel aquafeeds using camelina products.
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