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Zhang M, Zhou W, Cao Y, Kou L, Liu C, Li X, Zhang B, Guo W, Xu B, Li S. O-GlcNAcylation regulates long-chain fatty acid metabolism by inhibiting ACOX1 ubiquitination-dependent degradation. Int J Biol Macromol 2024; 266:131151. [PMID: 38547945 DOI: 10.1016/j.ijbiomac.2024.131151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 02/27/2024] [Accepted: 03/25/2024] [Indexed: 04/06/2024]
Abstract
BACKGROUND Cold as a common environmental stress, causes increased heat production, accelerated metabolism and even affects its production performance. How to improve the adaptability of the animal organism to cold has been an urgent problem. As a key hub of lipid metabolism, the liver can regulate lipid metabolism to maintain energy balance, and O-GlcNAcylation is a kind of important PTMs, which participates in a variety of signaling and mechanism regulation, and at the same time, is very sensitive to changes in stress and nutritional levels, and is the body's "stress receptors" and "nutrient receptors". Therefore, the aim of this experiment was to investigate the effect of cold-induced O-GlcNAcylation on hepatic lipid metabolism, and to explore the potential connection between O-GlcNAcylation and hepatic lipid metabolism. METHODS To investigate the loss of O-linked N-acetylglucosamine (O-GlcNAc) transferase (OGT) and the precise impacts of additional cold-induced circumstances on liver mass, shape, and metabolic profile, C57 mice were used as an animal model. Using the protein interactions approach, the mechanism of O-GlcNAcylation, as well as the degradation pathway of acyl-Coenzyme A oxidase 1 (ACOX1), were clarified. Additional in vitro analyses of oleic acid (OA) and OGT inhibitor tetraoxan (Alloxan) (Sigma, 2244-11-3) on lipid breakdown in AML-12 cells. RESULTS In C57BL/6 mice, deletion of O-GlcNAcylation disrupted lipid metabolism, caused hepatic edema and fibrosis, and altered mitochondrial apoptosis. This group of modifications was made worse by cold induction. The accumulation of medium- and long-chain fatty acids is a hallmark of lipolysis, which is accelerated by the deletion of O-GlcNAcylation, whereas lipid synthesis is slowed down. The association between ACOX1 and OGT at the K48 gene precludes ubiquitinated degradation.
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Affiliation(s)
- Meng Zhang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Wanhui Zhou
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Yu Cao
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China; Branch of Animal Husbandry and Veterinary, Heilongjiang Academy of Agricultural Sciences, No.61 Shenjiang Road, Longsha District, Qiqihar, 161005, Heilongjiang Province, China
| | - Lele Kou
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Chunwei Liu
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Xiaoshuang Li
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Boxi Zhang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Wenjin Guo
- College of Animal Science and Veterinary Medicine, Jilin University, Changchun 130000, PR China
| | - Bin Xu
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China.
| | - Shize Li
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China.
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Tawbeh A, Raas Q, Tahri-Joutey M, Keime C, Kaiser R, Trompier D, Nasser B, Bellanger E, Dessard M, Hamon Y, Benani A, Di Cara F, Cunha Alves T, Berger J, Weinhofer I, Mandard S, Cherkaoui-Malki M, Andreoletti P, Gondcaille C, Savary S. Immune response of BV-2 microglial cells is impacted by peroxisomal beta-oxidation. Front Mol Neurosci 2023; 16:1299314. [PMID: 38164407 PMCID: PMC10757945 DOI: 10.3389/fnmol.2023.1299314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 11/23/2023] [Indexed: 01/03/2024] Open
Abstract
Microglia are crucial for brain homeostasis, and dysfunction of these cells is a key driver in most neurodegenerative diseases, including peroxisomal leukodystrophies. In X-linked adrenoleukodystrophy (X-ALD), a neuroinflammatory disorder, very long-chain fatty acid (VLCFA) accumulation due to impaired degradation within peroxisomes results in microglial defects, but the underlying mechanisms remain unclear. Using CRISPR/Cas9 gene editing of key genes in peroxisomal VLCFA breakdown (Abcd1, Abcd2, and Acox1), we recently established easily accessible microglial BV-2 cell models to study the impact of dysfunctional peroxisomal β-oxidation and revealed a disease-associated microglial-like signature in these cell lines. Transcriptomic analysis suggested consequences on the immune response. To clarify how impaired lipid degradation impacts the immune function of microglia, we here used RNA-sequencing and functional assays related to the immune response to compare wild-type and mutant BV-2 cell lines under basal conditions and upon pro-inflammatory lipopolysaccharide (LPS) activation. A majority of genes encoding proinflammatory cytokines, as well as genes involved in phagocytosis, antigen presentation, and co-stimulation of T lymphocytes, were found differentially overexpressed. The transcriptomic alterations were reflected by altered phagocytic capacity, inflammasome activation, increased release of inflammatory cytokines, including TNF, and upregulated response of T lymphocytes primed by mutant BV-2 cells presenting peptides. Together, the present study shows that peroxisomal β-oxidation defects resulting in lipid alterations, including VLCFA accumulation, directly reprogram the main cellular functions of microglia. The elucidation of this link between lipid metabolism and the immune response of microglia will help to better understand the pathogenesis of peroxisomal leukodystrophies.
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Affiliation(s)
- Ali Tawbeh
- Laboratoire Bio-PeroxIL EA7270, University of Bourgogne, Dijon, France
| | - Quentin Raas
- Laboratoire Bio-PeroxIL EA7270, University of Bourgogne, Dijon, France
| | - Mounia Tahri-Joutey
- Laboratoire Bio-PeroxIL EA7270, University of Bourgogne, Dijon, France
- Laboratory of Biochemistry, Neurosciences, Natural Resources and Environment, Faculty of Sciences and Techniques, University Hassan I, Settat, Morocco
| | - Céline Keime
- Plateforme GenomEast, IGBMC, CNRS UMR 7104, Inserm U1258, University of Strasbourg, Illkirch, France
| | - Romain Kaiser
- Plateforme GenomEast, IGBMC, CNRS UMR 7104, Inserm U1258, University of Strasbourg, Illkirch, France
| | - Doriane Trompier
- Laboratoire Bio-PeroxIL EA7270, University of Bourgogne, Dijon, France
| | - Boubker Nasser
- Laboratory of Biochemistry, Neurosciences, Natural Resources and Environment, Faculty of Sciences and Techniques, University Hassan I, Settat, Morocco
| | - Emma Bellanger
- Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France
| | - Marie Dessard
- Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France
| | - Yannick Hamon
- Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France
| | - Alexandre Benani
- Centre des Sciences du Goût et de l'Alimentation, CNRS, INRAE, Institut Agro, University of Bourgogne, Dijon, France
| | - Francesca Di Cara
- Department of Microbiology and Immunology, Dalhousie University, IWK Health Centre, Halifax, NS, Canada
| | - Tânia Cunha Alves
- Department of Pathobiology of the Nervous System, Center for Brain Research, Medical University of Vienna, Vienna, Austria
| | - Johannes Berger
- Department of Pathobiology of the Nervous System, Center for Brain Research, Medical University of Vienna, Vienna, Austria
| | - Isabelle Weinhofer
- Department of Pathobiology of the Nervous System, Center for Brain Research, Medical University of Vienna, Vienna, Austria
| | - Stéphane Mandard
- LipSTIC LabEx, University of Bourgogne, INSERM LNC UMR1231, Dijon, France
| | | | | | | | - Stéphane Savary
- Laboratoire Bio-PeroxIL EA7270, University of Bourgogne, Dijon, France
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3
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Mo Y, Zhao J, Zhao R, Huang Y, Liang Z, Zhou X, Chu J, Pan X, Duan S, Chen S, Mo L, Huang B, Huang Z, Wei J, Zheng Q, Luo W. Loss of ACOX1 in clear cell renal cell carcinoma and its correlation with clinical features. Open Life Sci 2023; 18:20220696. [PMID: 37724116 PMCID: PMC10505341 DOI: 10.1515/biol-2022-0696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 05/18/2023] [Accepted: 07/30/2023] [Indexed: 09/20/2023] Open
Abstract
Clear cell renal cell carcinoma (ccRCC) is a major pathological type of kidney cancer with a poor prognosis due to a lack of biomarkers for early diagnosis and prognosis prediction of ccRCC. In this study, we investigated the aberrant expression of Acyl-coenzyme A oxidase 1 (ACOX1) in ccRCC and evaluated its potential in diagnosis and prognosis. ACOX1 is the first rate-limiting enzyme in the peroxidation β-oxidation pathway and is involved in the regulation of fatty acid oxidative catabolism. The mRNA and protein levels of ACOX1 were significantly downregulated in ccRCC, and its downregulation was closely associated with the tumor-node-metastasis stage of patients. The ROC curves showed that ACOX1 possesses a high diagnostic value for ccRCC. The OS analysis suggested that lower expression of ACOX1 was closely related to the worse outcome of patients. In addition, gene set enrichment analysis suggested that expression of ACOX1 was positively correlated with CDH1, CDH2, CDKL2, and EPCAM, while negatively correlated with MMP9 and VIM, which strongly indicated that ACOX1 may inhibit the invasion and migration of ccRCC by reversing epithelial-mesenchymal transition. Furthermore, we screened out that miR-16-5p is upregulated at the mRNA transcript level in ccRCC and negatively correlated with ACOX1. In conclusion, our results showed that ACOX1 is abnormally low expressed in ccRCC, suggesting that it could serve as a diagnostic and prognostic biomarker for ccRCC. Overexpression of miR-16-5p may be responsible for the inactivation of ACOX1.
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Affiliation(s)
- Yingxi Mo
- Department of Research, Guangxi Medical University Cancer Hospital, Nanning, China
| | - Jun Zhao
- Key Laboratory of High-Incidence-Tumor Prevention & Treatment, Guangxi Medical University, Ministry of Education, Nanning, China
- Affiliated Stomatological Hospital of Guangxi Medical University, Nanning, China
| | - Ran Zhao
- Key Laboratory of High-Incidence-Tumor Prevention & Treatment, Guangxi Medical University, Ministry of Education, Nanning, China
- Life Science Institute, Guangxi Medical University, #22 Shuangyong Road, Nanning, 530021, China
| | - Yiying Huang
- Key Laboratory of High-Incidence-Tumor Prevention & Treatment, Guangxi Medical University, Ministry of Education, Nanning, China
| | - Ziyuan Liang
- Key Laboratory of High-Incidence-Tumor Prevention & Treatment, Guangxi Medical University, Ministry of Education, Nanning, China
- Life Science Institute, Guangxi Medical University, #22 Shuangyong Road, Nanning, 530021, China
| | - Xiaoying Zhou
- Key Laboratory of High-Incidence-Tumor Prevention & Treatment, Guangxi Medical University, Ministry of Education, Nanning, China
- Life Science Institute, Guangxi Medical University, #22 Shuangyong Road, Nanning, 530021, China
| | - Jiemei Chu
- Life Science Institute, Guangxi Medical University, #22 Shuangyong Road, Nanning, 530021, China
| | - Xinli Pan
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Guangxi Academy of Sciences, Nanning, China
| | - Siyu Duan
- Life Science Institute, Guangxi Medical University, #22 Shuangyong Road, Nanning, 530021, China
| | - Shiman Chen
- Life Science Institute, Guangxi Medical University, #22 Shuangyong Road, Nanning, 530021, China
| | - Liufang Mo
- Life Science Institute, Guangxi Medical University, #22 Shuangyong Road, Nanning, 530021, China
| | - Bizhou Huang
- Life Science Institute, Guangxi Medical University, #22 Shuangyong Road, Nanning, 530021, China
| | - Zhaozhang Huang
- Life Science Institute, Guangxi Medical University, #22 Shuangyong Road, Nanning, 530021, China
| | - Jiale Wei
- Life Science Institute, Guangxi Medical University, #22 Shuangyong Road, Nanning, 530021, China
| | - Qian Zheng
- Key Laboratory of High-Incidence-Tumor Prevention & Treatment, Guangxi Medical University, Ministry of Education, Nanning, China
- Life Science Institute, Guangxi Medical University, #22 Shuangyong Road, Nanning, 530021, China
| | - Wenqi Luo
- Department of Pathology, Guangxi Medical University Cancer Hospital, 530021, Nanning, China
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4
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Raas Q, Tawbeh A, Tahri-Joutey M, Gondcaille C, Keime C, Kaiser R, Trompier D, Nasser B, Leoni V, Bellanger E, Boussand M, Hamon Y, Benani A, Di Cara F, Truntzer C, Cherkaoui-Malki M, Andreoletti P, Savary S. Peroxisomal defects in microglial cells induce a disease-associated microglial signature. Front Mol Neurosci 2023; 16:1170313. [PMID: 37138705 PMCID: PMC10149961 DOI: 10.3389/fnmol.2023.1170313] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 03/27/2023] [Indexed: 05/05/2023] Open
Abstract
Microglial cells ensure essential roles in brain homeostasis. In pathological condition, microglia adopt a common signature, called disease-associated microglial (DAM) signature, characterized by the loss of homeostatic genes and the induction of disease-associated genes. In X-linked adrenoleukodystrophy (X-ALD), the most common peroxisomal disease, microglial defect has been shown to precede myelin degradation and may actively contribute to the neurodegenerative process. We previously established BV-2 microglial cell models bearing mutations in peroxisomal genes that recapitulate some of the hallmarks of the peroxisomal β-oxidation defects such as very long-chain fatty acid (VLCFA) accumulation. In these cell lines, we used RNA-sequencing and identified large-scale reprogramming for genes involved in lipid metabolism, immune response, cell signaling, lysosome and autophagy, as well as a DAM-like signature. We highlighted cholesterol accumulation in plasma membranes and observed autophagy patterns in the cell mutants. We confirmed the upregulation or downregulation at the protein level for a few selected genes that mostly corroborated our observations and clearly demonstrated increased expression and secretion of DAM proteins in the BV-2 mutant cells. In conclusion, the peroxisomal defects in microglial cells not only impact on VLCFA metabolism but also force microglial cells to adopt a pathological phenotype likely representing a key contributor to the pathogenesis of peroxisomal disorders.
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Affiliation(s)
- Quentin Raas
- Laboratoire Bio-PeroxIL EA7270, University of Bourgogne, Dijon, France
| | - Ali Tawbeh
- Laboratoire Bio-PeroxIL EA7270, University of Bourgogne, Dijon, France
| | - Mounia Tahri-Joutey
- Laboratoire Bio-PeroxIL EA7270, University of Bourgogne, Dijon, France
- Laboratory of Biochemistry, Neurosciences, Natural Resources and Environment, Faculty of Sciences and Techniques, University Hassan I, Settat, Morocco
| | | | - Céline Keime
- Plateforme GenomEast, IGBMC, CNRS UMR 7104, Inserm U1258, University of Strasbourg, Illkirch, France
| | - Romain Kaiser
- Plateforme GenomEast, IGBMC, CNRS UMR 7104, Inserm U1258, University of Strasbourg, Illkirch, France
| | - Doriane Trompier
- Laboratoire Bio-PeroxIL EA7270, University of Bourgogne, Dijon, France
| | - Boubker Nasser
- Laboratory of Biochemistry, Neurosciences, Natural Resources and Environment, Faculty of Sciences and Techniques, University Hassan I, Settat, Morocco
| | - Valerio Leoni
- Laboratory of Clinical Biochemistry, Hospital of Desio, ASST-Brianza and Department of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Emma Bellanger
- Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France
| | - Maud Boussand
- Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France
| | - Yannick Hamon
- Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France
| | - Alexandre Benani
- Centre des Sciences du Goût et de l’Alimentation, CNRS, INRAE, Institut Agro Dijon, University of Bourgogne Franche-Comté, Dijon, France
| | - Francesca Di Cara
- Department of Microbiology and Immunology, IWK Health Centre, Dalhousie University, Halifax, NS, Canada
| | - Caroline Truntzer
- Platform of Transfer in Biological Oncology, Georges François Leclerc Cancer Center–Unicancer, Dijon, France
| | | | | | - Stéphane Savary
- Laboratoire Bio-PeroxIL EA7270, University of Bourgogne, Dijon, France
- *Correspondence: Stéphane Savary,
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5
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Kang Y, Guo S, Wang X, Cao M, Pei J, Li R, Bao P, Wang J, Lamao J, Gongbao D, Lamao J, Liang C, Yan P, Guo X. Whole-Genome Resequencing Highlights the Unique Characteristics of Kecai Yaks. Animals (Basel) 2022; 12:ani12192682. [PMID: 36230423 PMCID: PMC9559661 DOI: 10.3390/ani12192682] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 09/29/2022] [Accepted: 10/03/2022] [Indexed: 12/01/2022] Open
Abstract
Kecai yaks are regarded as an important genetic resource in China owing to their high fecundity and flavorful meat. However, the genetic characteristics of Kecai yaks have not been effectively characterized to date, and the relationship between Kecai yaks and other yak breeds remains to be fully characterized. In this paper, the resequencing of the Kecai yak genome is performed leading to the identification of 11,491,383 high-quality single nucleotide polymorphisms (SNPs). Through principal component, phylogenetic, and population genetic structure analyses based on these SNPs, Kecai yaks were confirmed to represent an independent population of yaks within China. In this study, marker and functional enrichment analysis of genes related to positive selection in Kecai yak was carried out, and the results show that such selection in Kecai yaks is associated with the adaptation to alpine environments and the deposition of muscle fat. Overall, these results offer a theoretical foundation for the future utilization of Kecai yak genetic resources.
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Affiliation(s)
- Yandong Kang
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Lanzhou 730050, China
| | - Shaoke Guo
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Lanzhou 730050, China
| | - Xingdong Wang
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Lanzhou 730050, China
| | - Mengli Cao
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Lanzhou 730050, China
| | - Jie Pei
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Lanzhou 730050, China
| | - Ruiwu Li
- Station of Animal Husbandry in Xiahe County, Xiahe 747199, China
| | - Pengjia Bao
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Lanzhou 730050, China
| | - Jiefeng Wang
- Station of Animal Husbandry in Xiahe County, Xiahe 747199, China
| | - Jiebu Lamao
- Station of Animal Husbandry in Xiahe County, Xiahe 747199, China
| | - Dangzhi Gongbao
- Station of Animal Husbandry in Xiahe County, Xiahe 747199, China
| | - Ji Lamao
- Station of Animal Husbandry in Xiahe County, Xiahe 747199, China
| | - Chunnian Liang
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Lanzhou 730050, China
| | - Ping Yan
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Lanzhou 730050, China
| | - Xian Guo
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Lanzhou 730050, China
- Correspondence: ; Tel.: +86-1899-3037-854
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6
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Du L, Li K, Chang T, An B, Liang M, Deng T, Cao S, Du Y, Cai W, Gao X, Xu L, Zhang L, Li J, Gao H. Integrating genomics and transcriptomics to identify candidate genes for subcutaneous fat deposition in beef cattle. Genomics 2022; 114:110406. [PMID: 35709924 DOI: 10.1016/j.ygeno.2022.110406] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 05/31/2022] [Accepted: 06/09/2022] [Indexed: 02/07/2023]
Abstract
Fat deposition is a complex economic trait regulated by polygenic genetic basis and environmental factors. Therefore, integrating multi-omics data to uncover its internal regulatory mechanism has attracted extensive attention. Here, we performed genomics and transcriptomics analysis to detect candidates affecting subcutaneous fat (SCF) deposition in beef cattle. The association of 770K SNPs with the backfat thickness captured nine significant SNPs within or near 11 genes. Additionally, 13 overlapping genes regarding fat deposition were determined via the analysis of differentially expressed genes and weighted gene co-expression network analysis (WGCNA). We then calculated the correlations of these genes with BFT and constructed their interaction network. Finally, seven biomarkers including ACACA, SCD, FASN, ACOX1, ELOVL5, HACD2, and HSD17B12 were screened. Notably, ACACA, identified by the integration of genomics and transcriptomics, was more likely to exert profound effects on SCF deposition. These findings provided novel insights into the regulation mechanism underlying bovine fat accumulation.
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Affiliation(s)
- Lili Du
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Keanning Li
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Tianpeng Chang
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Bingxing An
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Mang Liang
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Tianyu Deng
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Sheng Cao
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Tianjin Agricultural University, Tianjin 300000, China
| | - Yueying Du
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Qingdao Agricultural University, Shandong 266000, China
| | - Wentao Cai
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Xue Gao
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Lingyang Xu
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Lupei Zhang
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Junya Li
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Huijiang Gao
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
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7
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Zhang F, Xiong Q, Tao H, Liu Y, Zhang N, Li XF, Suo XJ, Yang QP, Chen MX. ACOX1, regulated by C/EBPα and miR-25-3p, promotes bovine preadipocyte adipogenesis. J Mol Endocrinol 2021; 66:195-205. [PMID: 33502338 PMCID: PMC8052523 DOI: 10.1530/jme-20-0250] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 01/22/2021] [Indexed: 12/14/2022]
Abstract
Acyl-coenzyme A oxidase 1 (ACOX1) is the first and rate-limiting enzyme in peroxisomal fatty acid β-oxidation of fatty acids. Previous studies have reported that ACOX1 was correlated with the meat quality of livestock, while the role of ACOX1 in intramuscular adipogenesis of beef cattle and its transcriptional and post-transcriptional regulatory mechanisms remain unclear. In the present study, gain-of-function and loss-of-function assays demonstrated that ACOX1 positively regulated the adipogenesis of bovine intramuscular preadipocytes. The C/EBPα-binding sites in the bovine ACOX1 promoter region at -1142 to -1129 bp, -831 to -826 bp, and -303 to -298 bp were identified by promoter deletion analysis and site-directed mutagenesis. Electrophoretic mobility shift assays (EMSA) and chromatin immunoprecipitation (ChIP) further showed that these three regions are C/EBPα-binding sites, both in vitro and in vivo, indicating that C/EBPα directly interacts with the bovine ACOX1 promoter and inhibits its transcription. Furthermore, the results from bioinformatics analysis, dual luciferase assay, site-directed mutagenesis, qRT-PCR, and Western blotting demonstrated that miR-25-3p directly targeted the ACOX1 3'UTR (3'UTR). Taken together, our findings suggest that ACOX1, regulated by transcription factor C/EBPα and miR-25-3p, promotes adipogenesis of bovine intramuscular preadipocytes via regulating peroxisomal fatty acid β-oxidation.
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Affiliation(s)
- Feng Zhang
- Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Qi Xiong
- Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Hu Tao
- Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Yang Liu
- Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Nian Zhang
- Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Xiao-Feng Li
- Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Xiao-Jun Suo
- Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Qian-Ping Yang
- Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Ming-Xin Chen
- Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan, China
- Correspondence should be addressed to M-X Chen:
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Sun J, Li H, Luo X, Lu R, Ji H. Identification and characterization of two isoforms of acyl-coenzyme A oxidase 1 gene and their expression in fasting-induced grass carp Ctenopharyngodon idella adipocyte lipolysis. FISH PHYSIOLOGY AND BIOCHEMISTRY 2020; 46:1645-1652. [PMID: 32601856 DOI: 10.1007/s10695-020-00816-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 04/29/2020] [Indexed: 06/11/2023]
Abstract
Acyl-coenzyme A oxidases 1 (ACOX1) is the first rate-limiting enzyme responsible for peroxisomal β-oxidation. In the present study, two mRNA variants, ACOX1a and ACOX1b, transcribed from a single gene, were for the first time isolated and characterized from grass carp Ctenopharyngodon idella, both encoding putative peptides of 660 amino acids. Analysis of the exon-intron structures clarified that grass carp ACOX1a and ACOX1b comprise 14 coding exons and correspond to 3a and 3b isoforms of exon 3 splicing variants. Both ACOX1a and ACOX1b mRNAs were expressed in a wide range of tissues, but the abundance of each ACOX1 mRNA showed the tissue-dependent expression patterns. Time-course analysis of ACOX1 expressions indicated that the level of ACOX1a mRNA reached an almost maximal level at day 2, while that of ACOX1b mRNA reached an almost maximal level at day 8 during grass carp primary preadipocyte differentiation. In fasting-induced adipocyte lipolysis, only ACOX1a showed a significant increase in adipocyte, indicating that two ACOX1 isoforms may serve somewhat different roles in the peroxisomal β-oxidation. These results suggested that grass carp ACOX1a and ACOX1b were differently modulated by fasting in adipocyte. In addition, we found that mitochondrial β-oxidation might dominate at the early stage of fasting in adipocytes, indicating that mitochondria and peroxisomes might possess different capacities in fasting-induced adipocytes fatty acid oxidation.
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Affiliation(s)
- Jian Sun
- College of Animal Science and Technology, Northwest Agriculture and Forestry University, Yangling, 712100, China
| | - Handong Li
- College of Animal Science and Technology, Northwest Agriculture and Forestry University, Yangling, 712100, China
| | - Xiaolong Luo
- College of Animal Science and Technology, Northwest Agriculture and Forestry University, Yangling, 712100, China
| | - Ronghua Lu
- College of Fisheries, Henan Normal University, Xinxiang, 453007, China.
| | - Hong Ji
- College of Animal Science and Technology, Northwest Agriculture and Forestry University, Yangling, 712100, China.
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9
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Raas Q, Saih FE, Gondcaille C, Trompier D, Hamon Y, Leoni V, Caccia C, Nasser B, Jadot M, Ménétrier F, Lizard G, Cherkaoui-Malki M, Andreoletti P, Savary S. A microglial cell model for acyl-CoA oxidase 1 deficiency. Biochim Biophys Acta Mol Cell Biol Lipids 2019; 1864:567-576. [DOI: 10.1016/j.bbalip.2018.10.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 10/01/2018] [Accepted: 10/05/2018] [Indexed: 12/26/2022]
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10
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Di TM, Yang SL, Du FY, Zhao L, Li XH, Xia T, Zhang XF. Oleiferasaponin A₂, a Novel Saponin from Camellia oleifera Abel. Seeds, Inhibits Lipid Accumulation of HepG2 Cells Through Regulating Fatty Acid Metabolism. Molecules 2018; 23:E3296. [PMID: 30545108 PMCID: PMC6321182 DOI: 10.3390/molecules23123296] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 12/05/2018] [Accepted: 12/10/2018] [Indexed: 12/03/2022] Open
Abstract
A new triterpenoid saponin, named oleiferasaponin A₂, was isolated and identified from Camellia oleifera defatted seeds. Oleiferasaponin A₂ exhibited anti-hyperlipidemic activity on HepG2 cell lines. Further study of the hypolipidemic mechanism showed that oleiferasaponin A₂ inhibited fatty acid synthesis by significantly down-regulating the expression of SREBP-1c, FAS and FAS protein, while dramatically promoting fatty acid β-oxidation by up-regulating the expression of ACOX-1, CPT-1 and ACOX-1 protein. Our results demonstrate that the oleiferasaponin A₂ possesses potential medicinal value for hyperlipidemia treatment.
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Affiliation(s)
- Tai-Mei Di
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, China.
| | - Shao-Lan Yang
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, China.
| | - Feng-Yu Du
- College of Chemistry and Pharmacy, Qingdao Agricultural University, Qingdao 266109, China.
| | - Lei Zhao
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, China.
| | - Xiao-Han Li
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, China.
| | - Tao Xia
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, China.
| | - Xin-Fu Zhang
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, China.
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11
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Identification, characterization and nutritional regulation of two isoforms of acyl-coenzyme A oxidase 1 gene in Nile tilapia (Oreochromis niloticus). Gene 2014; 545:30-5. [DOI: 10.1016/j.gene.2014.05.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2014] [Revised: 04/24/2014] [Accepted: 05/02/2014] [Indexed: 01/17/2023]
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12
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Muñoz M, Fernández AI, Benítez R, Pena RN, Folch JM, Rodríguez MDC, Silió L, Alves E. Disentangling Two QTL on Porcine Chromosome 12 for Backfat Fatty Acid Composition. Anim Biotechnol 2013; 24:168-86. [DOI: 10.1080/10495398.2012.763130] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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13
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Pôrto LCJ, de Castro CH, Savergnini SSQ, Santos SHS, Ferreira AVM, Cordeiro LMDS, Sobrinho DBDS, Santos RAS, de Almeida AP, Botion LM. Improvement of the energy supply and contractile function in normal and ischemic rat hearts by dietary orotic acid. Life Sci 2012; 90:476-83. [DOI: 10.1016/j.lfs.2011.12.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2011] [Revised: 11/24/2011] [Accepted: 12/13/2011] [Indexed: 10/14/2022]
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14
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Jiao Y, Zan LS, Liu YF, Wang HB. Molecular characterization, polymorphism of the ACOX1 gene and association with ultrasound traits in Bos taurus. GENETICS AND MOLECULAR RESEARCH 2011; 10:1948-57. [PMID: 21948757 DOI: 10.4238/vol10-3gmr1036] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Acyl-coenzyme A oxidase 1 (ACOX1) is the first enzyme in peroxisomal fatty acid β-oxidation; it is rate-limiting and plays a key role in fatty acid metabolism and fat deposition. ACOX1 is an important candidate gene for meat quality selection through marker-assisted selection. Genomic structural analysis showed that bovine ACOX1 shares 86% identity with human ACOX1. Using PCR-SSCP technology, we discovered a single nucleotide polymorphism (SNP) (A1865C) in exon 13 of the ACOX1 gene. Allele frequencies of this SNP were investigated and evaluated with the χ(2) test in 641 cattle populations; only the Jiaxian red population was not in Hardy-Weinberg equilibrium. Gene heterozygosity, effective allele numbers and polymorphism information content of the bovine ACOX1 locus in seven populations varied from 0.2778 to 0.4954, 1.3846 to 1.9817 and 0.2392 to 0.3727, respectively. We also looked for a potential association of this SNP with ultrasound traits in 327 individuals and found a significant effect on ultrasound backfat thickness and ultrasound marbling score (P < 0.05). Meat quality traits were analyzed in another 71 Qinchuan individuals to determine associations with genotype. Animals with genotype AA had higher mean values of backfat thickness than those with genotypes AC and CC. A represents the base before mutation and C represents the base after mutation. We conclude that this SNP of the ACOX1 gene has potential as a genetic marker for meat quality traits in cattle reproduction and breeding.
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Affiliation(s)
- Y Jiao
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, PR China
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15
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Pôrto LCJ, Savergnini SSQ, de Castro CH, Mario EG, Ferreira AVM, Santos SHS, Andrade SP, Santos RAS, de Almeida AP, Botion LM. Carbohydrate-enriched diet impairs cardiac performance by decreasing the utilization of fatty acid and glucose. Ther Adv Cardiovasc Dis 2011; 5:11-22. [PMID: 21282201 DOI: 10.1177/1753944710386282] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIMS We hypothesized that a high-carbohydrate diet affects the cardiac performance by interfering in the metabolic steps involved in energy transfer in this organ. To verify this, we investigated the myocardial utilization of different substrates and contractile function in rats fed a high-carbohydrate diet, under normal flow and ischemia. METHODS and RESULTS Male Wistar rats were fed over 9 days with standard (39.5% carbohydrate, 8% fiber) or high-carbohydrate diet (58% carbohydrate) and, afterwards, their cardiac function was examined using isolated heart preparations. The high-carbohydrate diet decreased the activity of the lipoprotein lipase, utilization of fatty acids, expression of the gene of peroxisome proliferator-activated receptor α and its target enzymes. In addition, decreased GLUT4 mass, glucose uptake, glycogen content and glycolytic intermediates were also observed. High-carbohydrate hearts displayed weaker activation of the glycolytic pathway during ischemia, according to minor production of lactate, in relation to control hearts. The functional impairment caused by high-carbohydrate diet shown by the decrease in the ventricular systolic strength, +dT/dt and -dT/dt was, at least in part, due to the low availability of adenosine triphosphate (ATP). CONCLUSION Our data suggest that a high-carbohydrate diet can damage myocardial contractile function by decreasing the cardiac utilization of glucose and fatty acids and, consequently, the ATP pool.
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Affiliation(s)
- Laura C J Pôrto
- Department of Food Science, Federal University of Lavras, Lavras, MG, Brazil.
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Li G, Wu Z, Li X, Ning X, Li Y, Yang G. Biological role of microRNA-103 based on expression profile and target genes analysis in pigs. Mol Biol Rep 2010; 38:4777-86. [PMID: 21152985 DOI: 10.1007/s11033-010-0615-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2010] [Accepted: 11/25/2010] [Indexed: 01/12/2023]
Abstract
MicroRNAs (miRNAs) are endogenously expressed RNAs consisting of 20-24 nucleotides. These molecules are thought to repress protein translation by binding to target mRNAs. However, biological functions have not been assigned to most of the 175 porcine miRNAs registered in miRBase (release 15.0). In an effort to uncover miR-103 important in pigs, we examined the integrative tissue expression profile and gene ontology (GO) term enrichment of predicted target genes to determine the global biological functions of miR-103. Our results demonstrated that miR-103 is involved in various biological processes including brain development, lipid metabolism, adipocyte differentiation, hematopoiesis, and immunity. Moreover, we also experimentally verified effects of miR-103 in porcine preadipocytes. miR-103 levels increased in differentiating adipocytes, and inhibition of miR-103 effectively inhibited preadipocyte differentiation. In addition, mRNA levels of the putative miR-103 target RAI14 were higher in miR-103 inhibitor-treated adipocytes. These results demonstrate that miR-103 is involved in porcine preadipocyte differentiation and may act through the putative target gene RAI14. In a word, our data provide new insights into the global biological role of miR-103.
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Affiliation(s)
- Guoxi Li
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, 22 Xinong Road, Yangling, 712100 Shaanxi, People's Republic of China
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17
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Bilbao E, Cajaraville MP, Cancio I. Cloning and expression pattern of peroxisomal β-oxidation genes palmitoyl-CoA oxidase, multifunctional protein and 3-ketoacyl-CoA thiolase in mussel Mytilus galloprovincialis and thicklip grey mullet Chelon labrosus. Gene 2009; 443:132-42. [DOI: 10.1016/j.gene.2009.05.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2009] [Revised: 04/24/2009] [Accepted: 05/13/2009] [Indexed: 11/17/2022]
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18
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Morais S, Knoll-Gellida A, André M, Barthe C, Babin PJ. Conserved expression of alternative splicing variants of peroxisomal acyl-CoA oxidase 1 in vertebrates and developmental and nutritional regulation in fish. Physiol Genomics 2006; 28:239-52. [PMID: 17090698 DOI: 10.1152/physiolgenomics.00136.2006] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The acyl-coenzyme A oxidase 1 (ACOX1) catalyzes the first, rate-limiting step in peroxisomal beta-oxidation of medium to very long straight-chain fatty acids. Zebrafish (Danio rerio) acox1 was characterized and compared with homologs from other sequenced genomes, revealing a remarkable conservation of structure in the vertebrate lineage. Strictly conserved regions of the deduced proteins included acyl-CoA oxidase and FAD binding domains, as well as a COOH-terminal peroxisomal targeting signal. Whole mount in situ hybridization showed that zebrafish acox1 transcripts were diffusely distributed in early-stage embryonic cells, then discreetly expressed in the brain and widely present in the liver and intestine at later stages. An evolutionarily conserved alternative splicing of the corresponding acox1 primary transcript was identified in teleosts and tetrapods including mammals, giving rise, after exon skipping, to two splice variants, ACOX1-3I and ACOX1-3II. Real-time quantitative RT-PCR on zebrafish adult tissues indicated high levels of both variants in the liver, anterior intestine, and to a lesser extent, in the brain. However, the ACOX1-3II transcript variant was expressed seven times more in zebrafish brain than the ACOX1-3I variant. These data suggest a tissue-specific modulation of ACOX1 activity by exchanging exon 3 duplicated isoforms containing amino acid sequences that are potentially implicated in fatty acyl chain specificity. In addition, a significant pretranslational up-regulation of zebrafish and rainbow trout (Oncorhynchus mykiss) acox1 expression was observed in the anterior intestine after feeding. Taken together, these data indicate that ACOX1 alternative splicing isoforms play a key conserved role in the vertebrate fatty acid metabolism.
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Affiliation(s)
- Sofia Morais
- Génomique et Physiologie des Poissons, Université Bordeaux 1, UMR NuAGe, 33405 Talence cedex, France
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Yang JW, Afjehi-Sadat L, Gelpi E, Kunze M, Höger H, Fleckner J, Berger J, Lubec G. Proteome Profiling in the Rat Harderian Gland. J Proteome Res 2006; 5:1751-62. [PMID: 16823983 DOI: 10.1021/pr060082b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The Harderian gland is an orbital gland located behind the ocular bulb in most terrestrial vertebrates probably functioning for production of lipid secretion to protect the eye. We herein present a protein reference database of the rat Harderian gland that may serve as analytical tool for future proteomic work, report lipid and porphyrin handling cascades, address sequence conflicts and report structures that have not been so far described by proteomics methods.
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Affiliation(s)
- Jae-Won Yang
- Department of Pediatrics, Medical University of Vienna, Vienna, Austria
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20
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Coulter AA, Stephens JM. STAT5 activators modulate acyl CoA oxidase (AOX) expression in adipocytes and STAT5A binds to the AOX promoter in vitro. Biochem Biophys Res Commun 2006; 344:1342-5. [PMID: 16650827 DOI: 10.1016/j.bbrc.2006.04.071] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2006] [Accepted: 04/15/2006] [Indexed: 10/24/2022]
Abstract
Growth hormone (GH) diminishes adipose tissue mass in vivo and prolactin (PRL) can also modulate adipocyte metabolism. Both GH and PRL are potent activators of STAT5 and exert a variety of effects on adipocyte gene expression. In this study, we have demonstrated that GH and PRL increase the mRNA of acyl CoA oxidase in 3T3-L1 adipocytes. We also identified seven putative STAT elements in the murine AOX promoter. We observed that GH modulates protein binding to the majority of these promoter elements. However, GH induced very potent binding to -1841 to -1825 of the murine AOX promoter. EMSA supershift analysis revealed that this site was specifically bound by STAT5A, but not by STAT1 or STAT3. Taken together, these data strongly suggest that GH directly induces the expression of AOX in adipocytes through STAT5A binding to the -1841 to -1825 site within the AOX promoter. Our observations are consistent with other studies that demonstrate that STAT5 activators modulate fatty acid oxidation.
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Affiliation(s)
- Ann A Coulter
- Department of Biological Sciences, Louisiana State University, 202 Life Sciences Bldg., Baton Rouge, LA 70803, USA
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Tu Y, Thupari JN, Kim EK, Pinn ML, Moran TH, Ronnett GV, Kuhajda FP. C75 alters central and peripheral gene expression to reduce food intake and increase energy expenditure. Endocrinology 2005; 146:486-93. [PMID: 15498887 DOI: 10.1210/en.2004-0976] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
C75, a synthetic inhibitor of fatty acid synthase (FAS), causes anorexia and profound weight loss in lean and genetically obese mice. C75 also acts as a stimulator of carnitine palmitoyltransferase-1 to induce fatty acid oxidation. To approximate human obesity, we used a 2-wk C75 treatment model for diet-induced obese (DIO) mice to investigate the central and peripheral effects of C75 on gene expression. C75 treatment decreased food intake, increased energy expenditure, and reduced body weight more effectively in DIO than in lean mice. Analysis of the gene expression changes in hypothalamus demonstrated that the reduced food intake in C75-treated DIO mice might be mediated by inhibition of orexigenic neuropeptide expression and induction of anorexigenic neuropeptide expression. Gene expression changes in peripheral tissues indicated that C75 increased energy expenditure by the induction of genes involved in fatty acid oxidation. C75 also inhibited the expression of genes in peripheral tissues responsible for fatty acid synthesis and accumulation. The patterns of the changes in central and peripheral gene expression that occur with C75 treatment provide mechanisms to explain the reduced food intake and increased energy expenditure observed with C75.
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Affiliation(s)
- Yajun Tu
- Department of Neuroscience, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA
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22
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Temple KA, Cohen RN, Wondisford SR, Yu C, Deplewski D, Wondisford FE. An intact DNA-binding domain is not required for peroxisome proliferator-activated receptor gamma (PPARgamma) binding and activation on some PPAR response elements. J Biol Chem 2004; 280:3529-40. [PMID: 15572375 DOI: 10.1074/jbc.m411422200] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Peroxisome proliferator-activated receptor gamma (PPARgamma) interacts with retinoid X receptor (RXR) on PPAR response elements (PPREs) to regulate transcription of PPAR-responsive genes. To investigate the binding of PPARgamma and RXR to PPREs, three mutations were constructed in the DNA-binding domains of PPARgamma; two of the mutants maintained the structure of zinc finger I (PPARgamma-GS and PPARgamma-AA), and a third mutation disrupted the protein structure of zinc finger I (PPARgamma-CS). Results indicated that the mutations of PPARgamma that maintained intact zinc fingers were capable of binding to a variety of PPREs in the presence of RXR and could activate transcription on several PPREs. In parallel, a mutation was created in the DNA-binding domain of RXRalpha that maintained the structure of the zinc fingers (RXR-GS) but did not bind DNA and was transcriptionally inactive. Examination of the 3' half-site of several PPREs revealed that variations from the consensus sequence reduced or abolished transcriptional activity, but conversion to consensus improved transcriptional activity with PPARgamma-GS and PPARgamma-AA. Examination of the 5' half-site indicated that the upstream three nucleotides were more important for transcriptional activity than the downstream three nucleotides. Our data demonstrated that stringent binding of RXR to the 3' half-site of a PPRE is more influential on the binding of the PPARgamma/RXR heterodimer than the ability of PPARgamma to bind DNA. Thus, unlike RXR, PPARgamma exhibits promiscuity in binding on a PPRE, suggesting that the definition of a PPRE for PPARgamma may need to be expanded.
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Affiliation(s)
- Karla A Temple
- Department of Medicine, and Committee on Molecular Metabolism and Nutrition, Pritzker School of Medicine, University of Chicago, Chicago, Illinois 60637, USA
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Chevillard G, Clémencet MC, Etienne P, Martin P, Pineau T, Latruffe N, Nicolas-Francès V. Molecular cloning, gene structure and expression profile of two mouse peroxisomal 3-ketoacyl-CoA thiolase genes. BMC BIOCHEMISTRY 2004; 5:3. [PMID: 15043762 PMCID: PMC404372 DOI: 10.1186/1471-2091-5-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2003] [Accepted: 03/25/2004] [Indexed: 11/10/2022]
Abstract
BACKGROUND In rats, two peroxisomal 3-ketoacyl-CoA thiolase genes (A and B) have been cloned, whereas only one thiolase gene is found in humans. The aim of this study was thus to clone the different mouse thiolase genes in order to study both their tissue expression and their associated enzymatic activity. RESULTS In this study, we cloned and characterized two mouse peroxisomal 3-ketoacyl-CoA thiolase genes (termed thiolase A and B). Both thiolase A and B genes contain 12 exons and 11 introns. Using RNA extracted from mouse liver, we cloned the two corresponding cDNAs. Thiolase A and B cDNAs possess an open reading frame of 1272 nucleotides encoding a protein of 424 amino acids. In the coding sequence, the two thiolase genes exhibited approximately equal to 97% nucleotide sequence identity and approximately equal to 96% identity at the amino acid level. The tissue-specific expression of the two peroxisomal 3-ketoacyl-CoA thiolase genes was studied in mice. Thiolase A mRNA was mainly expressed in liver and intestine, while thiolase B mRNA essentially exhibited hepatic expression and weaker levels in kidney, intestine and white adipose tissue. Thiolase A and B expressions in the other tissues such as brain or muscle were very low though these tissues were chiefly involved in peroxisomal disorders. At the enzymatic level, thiolase activity was detected in liver, kidney, intestine and white adipose tissue but no significant difference was observed between these four tissues. Moreover, thiolase A and B genes were differently induced in liver of mice treated with fenofibrate. CONCLUSION Two mouse thiolase genes and cDNAs were cloned. Their corresponding transcripts are mostly expressed in the liver of mice and are differently induced by fenofibrate.
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Affiliation(s)
- Grégory Chevillard
- Laboratoire de Biologie Moléculaire et Cellulaire (GDR-CNRS n°2583), Université de Bourgogne, 6 Bd Gabriel, 21000 Dijon, France
| | - Marie-Claude Clémencet
- Laboratoire de Biologie Moléculaire et Cellulaire (GDR-CNRS n°2583), Université de Bourgogne, 6 Bd Gabriel, 21000 Dijon, France
| | - Philippe Etienne
- Laboratoire de Biologie Moléculaire et Cellulaire (GDR-CNRS n°2583), Université de Bourgogne, 6 Bd Gabriel, 21000 Dijon, France
| | - Pascal Martin
- Laboratoire de Pharmacologie et Toxicologie, INRA, BP 3, 31931 Cedex 09 Toulouse, France
| | - Thierry Pineau
- Laboratoire de Pharmacologie et Toxicologie, INRA, BP 3, 31931 Cedex 09 Toulouse, France
| | - Norbert Latruffe
- Laboratoire de Biologie Moléculaire et Cellulaire (GDR-CNRS n°2583), Université de Bourgogne, 6 Bd Gabriel, 21000 Dijon, France
| | - Valérie Nicolas-Francès
- Laboratoire de Biologie Moléculaire et Cellulaire (GDR-CNRS n°2583), Université de Bourgogne, 6 Bd Gabriel, 21000 Dijon, France
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Ko C, O'Rourke SM, Huang LS. A fish oil diet produces different degrees of suppression of apoB and triglyceride secretion in human apoB transgenic mouse strains. J Lipid Res 2003; 44:1946-55. [PMID: 12867542 DOI: 10.1194/jlr.m300172-jlr200] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Human apolipoprotein B (apoB) transgenic (HuBTg) mouse strains were used to assess genetic effects on the response to fish oil (FO), a source of n-3 fatty acids. A congenic HuBTg strain of the C57BL/6 (B6) background and six F1 HuBTg strains were fed a FO for 2 weeks. Different responses of plasma lipid levels to FO were observed among these strains. In particular, plasma apoB levels changed minimally in FO-fed male B6 HuBTg mice, but increased markedly ( approximately 40%) in FO-fed male FVB/NJ (FVB) x B6 F1 HuBTg mice. These strain differences were determined mainly by hepatic apoB secretion rates and were likely regulated by posttranscriptional mechanisms. In addition, plasma triglyceride (TG) levels were reduced (14%) in FO-fed B6 mice, but not in FVB x B6 mice. These strain differences were determined mainly by TG secretion rates, but were not due to differences in hepatic lipogenesis. Hepatic mRNA levels of acyl-CoA oxidase, reflective of peroxisomal beta-oxidation rate, were increased in FO-fed B6 but not in FVB x B6 mice, which could account for the difference in TG secretion rates. In summary, differential effects of FO on plasma apoB and TG levels in B6 and FVB x B6 HuBTg mice were associated with strain differences in hepatic apoB and TG secretion and in peroxisomal beta-oxidation.
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Affiliation(s)
- Carol Ko
- Department of Medicine, Columbia University, College of Physicians & Surgeons, New York, NY 10032, USA
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Benani A, Vol C, Heurtaux T, Asensio C, Dauça M, Lapicque F, Netter P, Minn A. Up-regulation of fatty acid metabolizing-enzymes mRNA in rat spinal cord during persistent peripheral local inflammation. Eur J Neurosci 2003; 18:1904-14. [PMID: 14622223 DOI: 10.1046/j.1460-9568.2003.02930.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Persistent peripheral inflammation is associated with repetitive painful inputs into the spinal cord, leading to a chronic pain state. Related dramatic changes occur in the central nervous system (CNS) including central sensitization, which results in hyperalgesia. This neural plasticity involves in part fatty acids as functional and structural compounds. We hypothesized that central modification of fatty acids metabolism might occur after prolonged peripheral noxious stimulation. In the present study, the regulation of genes involved in fatty acids metabolism in the rat CNS was investigated during a chronic pain state. Using semiquantitative RT-PCR, we explored in the neuraxis the mRNA expression of brain acyl-CoA synthetases (ACS) and acyl-CoA oxidase (ACO), which are major fatty acid-metabolizing enzymes, following complete Freund's adjuvant (CFA) injection into a hind paw. Similar spinal up-regulation of the isoforms ACS2, ACS3, ACS4, and of ACO was detected early after 30 min, reaching a maximal after 6 h post-injection. Other peaks were also observed after 4 and 21 days post-inoculation, corresponding to the acute and chronic inflammation, respectively. Induction occurred only in the lumbar spinal cord ipsilaterally to the inflamed paw and was completely inhibited by a local anaesthesia of the sciatic nerve, suggesting a neural transmission of the inducing signal. Moreover, intrathecal injection of MK801, a noncompetitive NMDA antagonist, partially prevented these inductions, highlighting the involvement of the neurotransmitter glutamate in the central ACS and ACO up-regulation. These findings suggest that the fatty metabolism is stimulated in the CNS during a chronic pain state.
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Affiliation(s)
- A Benani
- Laboratoire de Pharmacologie, Unité Mixte de Recherche 7561 CNRS-Université Henri Poincaré Nancy I, Faculté de Médecine, 54505 Vandoeuvre-les-Nancy, France
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26
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Ngo SNT, McKinnon RA, Stupans I. Identification and cloning of two forms of liver peroxisomal fatty Acyl CoA Oxidase from the koala (Phascolarctos cinereus). Gene 2003; 309:91-9. [PMID: 12758125 DOI: 10.1016/s0378-1119(03)00491-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
In the present study, the cloning, expression and characterization of the rate-limiting enzyme of the peroxisomal beta-oxidation spiral, acyl CoA oxidase (AOX), from koala (Phascolarctos cinereus) liver is described. It has been previously reported that peroxisomal cyanide-insensitive palmitoyl-CoA oxidation activity was absent in koala liver [Comp. Biochem. Physiol. (C) 127 (2000) 327]. This activity is a measure of the overall peroxisomal beta-oxidation minus the final step catalysed by thiolase. Two 2039 bp koala liver AOX cDNAs, designated AOX1 and AOX2, were cloned by reverse transcription-polymerase chain reaction and rapid amplification of cDNA ends. The koala AOX cDNAs encode proteins of 662 amino acids. Transfection of the koala AOX cDNAs into Cos-7 cells resulted in the expression of proteins with palmitoyl-CoA oxidase activity. The apparent K(m) values for AOX1 and AOX2 cDNA-expressed enzymes were 28 and 38 microM, respectively, which are within the range of order of magnitude reported for rat and human purified AOX enzymes (approximately 10 microM). Northern analysis, utilizing the koala AOX1 cDNA as probe, detected a more intense AOX mRNA band in the koala liver as compared to rats and humans. Southern blot analysis of liver genomic DNA samples revealed a single AOX gene fragment of less than 14 kb in koalas, rat and humans, suggesting a single AOX gene. Collectively, the results of this study suggest that the absence of peroxisomal cyanide-insensitive palmitoyl-CoA oxidation activity in the koala liver is possibly due to deficiencies of one or more enzymes downstream of acyl-CoA oxidase and/or deficiencies of mitochondrial beta-oxidation enzymes.
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Affiliation(s)
- Suong Ngoc Thi Ngo
- Centre for Pharmaceutical Research, College of Pharmacy, University of South Australia, City East Campus, North Terrace, 5000, Adelaide, SA, Australia
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Klein ATJ, van den Berg M, Bottger G, Tabak HF, Distel B. Saccharomyces cerevisiae acyl-CoA oxidase follows a novel, non-PTS1, import pathway into peroxisomes that is dependent on Pex5p. J Biol Chem 2002; 277:25011-9. [PMID: 11967269 DOI: 10.1074/jbc.m203254200] [Citation(s) in RCA: 115] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The peroxisomal protein acyl-CoA oxidase (Pox1p) of Saccharomyces cerevisiae lacks either of the two well characterized peroxisomal targeting sequences known as PTS1 and PTS2. Here we demonstrate that peroxisomal import of Pox1p is nevertheless dependent on binding to Pex5p, the PTS1 import receptor. The interaction between Pex5p and Pox1p, however, involves novel contact sites in both proteins. The interaction region in Pex5p is located in a defined area of the amino-terminal part of the protein outside of the tetratricopeptide repeat domain involved in PTS1 recognition; the interaction site in Pox1p is located internally and not at the carboxyl terminus where a PTS1 is normally found. By making use of pex5 mutants that are either specifically disturbed in binding of PTS1 proteins or in binding of Pox1p, we demonstrate the existence of two independent, Pex5p-mediated import pathways into peroxisomes in yeast as follows: a classical PTS1 pathway and a novel, non-PTS1 pathway for Pox1p.
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Affiliation(s)
- Andre T J Klein
- Department of Biochemistry, Academic Medical Center, University of Amsterdam, Meibergdreef 15, The Netherlands
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28
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Huyghe S, Casteels M, Janssen A, Meulders L, Mannaerts GP, Declercq PE, Van Veldhoven PP, Baes M. Prenatal and postnatal development of peroxisomal lipid-metabolizing pathways in the mouse. Biochem J 2001; 353:673-80. [PMID: 11171065 PMCID: PMC1221614 DOI: 10.1042/0264-6021:3530673] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The ontogeny of the following peroxisomal metabolic pathways was evaluated in mouse liver and brain: alpha-oxidation, beta-oxidation and ether phospholipid synthesis. In mouse embryos lacking functional peroxisomes (PEX5(-/-) knock-out), a deficiency of plasmalogens and an accumulation of the very-long-chain fatty acid C(26:0) was observed in comparison with control littermates, indicating that ether phospholipid synthesis and beta-oxidation are already active at mid-gestation in the mouse. Northern analysis revealed that the enzymes required for the beta-oxidation of straight-chain substrates are present in liver and brain during embryonic development but that those responsible for the degradation of branched-chain substrates are present only in liver from late gestation onwards. The expression pattern of transcripts encoding enzymes of the alpha-oxidation pathway suggested that alpha-oxidation is initiated in the liver around birth and is not active in brain throughout development. Remarkably, a strong induction of the mRNA levels of enzymes involved in alpha-oxidation and beta-oxidation was observed around birth in the liver. In contrast, enzyme transcripts that were expressed in brain were present at rather constant levels throughout prenatal and postnatal development. These results suggest that the defective ether phospholipid synthesis and/or peroxisomal beta-oxidation of straight-chain fatty acids might be involved in the pathogenesis of the prenatal organ defects in peroxisome-deficient mice and men.
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Affiliation(s)
- S Huyghe
- Laboratorium Klinische Chemie, Faculteit Farmaceutische Wetenschappen, Katholieke Universiteit Leuven, Campus Gasthuisberg O/N, B 3000 Leuven, Belgium
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