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Abstract
Peroxisomes are highly dynamic, oxidative organelles with key metabolic functions in cellular lipid metabolism, such as the β-oxidation of fatty acids and the synthesis of myelin sheath lipids, as well as the regulation of cellular redox balance. Loss of peroxisomal functions causes severe metabolic disorders in humans. Furthermore, peroxisomes also fulfil protective roles in pathogen and viral defence and immunity, highlighting their wider significance in human health and disease. This has sparked increasing interest in peroxisome biology and their physiological functions. This review presents an update and a continuation of three previous review articles addressing the unsolved mysteries of this remarkable organelle. We continue to highlight recent discoveries, advancements, and trends in peroxisome research, and address novel findings on the metabolic functions of peroxisomes, their biogenesis, protein import, membrane dynamics and division, as well as on peroxisome-organelle membrane contact sites and organelle cooperation. Furthermore, recent insights into peroxisome organisation through super-resolution microscopy are discussed. Finally, we address new roles for peroxisomes in immune and defence mechanisms and in human disorders, and for peroxisomal functions in different cell/tissue types, in particular their contribution to organ-specific pathologies.
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Grants
- BB/W015420/1, BB/V018167/1, BB/T002255/1, BB/R016844/1 Biotechnology and Biological Sciences Research Council
- BB/W015420/1, BB/V018167/1, BB/T002255/1, BB/R016844/1 Biotechnology and Biological Sciences Research Council
- BB/W015420/1, BB/V018167/1, BB/T002255/1, BB/R016844/1 Biotechnology and Biological Sciences Research Council
- European Union’s Horizon 2020 research and innovation programme
- Deutsches Zentrum für Herz-Kreislaufforschung
- German Research Foundation
- Medical Faculty Mannheim, University of Heidelberg
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Affiliation(s)
- Rechal Kumar
- Faculty of Health and Life Sciences, Department of Biosciences, University of Exeter, Geoffrey Pope Building, Stocker Road, Exeter, EX4 4QD, UK
| | - Markus Islinger
- Institute of Neuroanatomy, Medical Faculty Mannheim, Mannheim Centre for Translational Neuroscience, University of Heidelberg, 68167, Mannheim, Germany
| | - Harley Worthy
- Faculty of Health and Life Sciences, Department of Biosciences, University of Exeter, Geoffrey Pope Building, Stocker Road, Exeter, EX4 4QD, UK
| | - Ruth Carmichael
- Faculty of Health and Life Sciences, Department of Biosciences, University of Exeter, Geoffrey Pope Building, Stocker Road, Exeter, EX4 4QD, UK.
| | - Michael Schrader
- Faculty of Health and Life Sciences, Department of Biosciences, University of Exeter, Geoffrey Pope Building, Stocker Road, Exeter, EX4 4QD, UK.
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Guo Y, Zhou P, Qiao L, Guan H, Gou J, Liu X. Maternal protein deficiency impairs peroxisome biogenesis and leads to oxidative stress and ferroptosis in liver of fetal growth restriction offspring. J Nutr Biochem 2023; 121:109432. [PMID: 37657642 DOI: 10.1016/j.jnutbio.2023.109432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/28/2023] [Accepted: 08/23/2023] [Indexed: 09/03/2023]
Abstract
Maternal protein malnutrition leads to liver dysfunction and increases susceptibility to nonalcoholic fatty liver disease in adult fetal growth restriction (FGR) offspring, yet the underlying mechanism remains unknown. Peroxisomes play vital roles in fatty acid β-oxidation (FAO) and detoxification of reactive oxygen species (ROS). Using a well-defined rat model, the peroxins (PEXs), fatty acid metabolic enzymes, and oxidase stress regulators were investigated in the liver of FGR offspring. The results revealed that PEX3, 11b, 14, and 19 were obviously reduced in the fetal liver and lasted to adulthood, suggesting a decrease in the biogenesis and division of peroxisomes. FA metabolism enzymes and ferroptosis regulators were deregulated. To further investigate this association, small interfering RNA was employed to achieve knockdown (KD) of PEX14 in BRL cells (a rat hepatocyte line). PEX14 KD led to dysregulation of PEXs and long-chain FAs accumulation. PEX14 deficiency caused ROS accumulation and lipid peroxidation, finally induced regulated cell death (including apoptosis, autophagy, and ferroptosis). Double knock down (DKD) of PEX14 and fatty acyl-CoA reductase 1 (FAR1) revealed that PEX14 KD-induced ferroptosis was related with enhanced FAR1 level. DKD of PEX14 and Atg5 further confirmed that PEX14 KD-induced cell death was partly autophagy-dependent. Overall, these data demonstrate a vital role for PEX14 in maintaining peroxisome function and liver physiology, and suggest that hepatocyte peroxisome defects partly explain liver dysplasia and lipid metabolism disorders in fetal original liver disease.
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Affiliation(s)
- Yanyan Guo
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, PR China
| | - Pei Zhou
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, PR China
| | - Lei Qiao
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, PR China
| | - Hongbo Guan
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, PR China
| | - Jian Gou
- Department of Nutrition, Shengjing Hospital of China Medical University, Shenyang, PR China.
| | - Xiaomei Liu
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, PR China.
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Maréchal L, Sicotte B, Caron V, Brochu M, Tremblay A. Fetal Cardiac Lipid Sensing Triggers an Early and Sex-related Metabolic Energy Switch in Intrauterine Growth Restriction. J Clin Endocrinol Metab 2021; 106:3295-3311. [PMID: 34245263 PMCID: PMC8530737 DOI: 10.1210/clinem/dgab496] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Indexed: 12/21/2022]
Abstract
CONTEXT Intrauterine growth restriction (IUGR) is an immediate outcome of an adverse womb environment, exposing newborns to developing cardiometabolic disorders later in life. OBJECTIVE This study investigates the cardiac metabolic consequences and underlying mechanism of energy expenditure in developing fetuses under conditions of IUGR. METHODS Using an animal model of IUGR characterized by uteroplacental vascular insufficiency, mitochondrial function, gene profiling, lipidomic analysis, and transcriptional assay were determined in fetal cardiac tissue and cardiomyocytes. RESULTS IUGR fetuses exhibited an upregulation of key genes associated with fatty acid breakdown and β-oxidation (Acadvl, Acadl, Acaa2), and mitochondrial carnitine shuttle (Cpt1a, Cpt2), instigating a metabolic gene reprogramming in the heart. Induction of Ech1, Acox1, Acox3, Acsl1, and Pex11a indicated a coordinated interplay with peroxisomal β-oxidation and biogenesis mainly observed in females, suggesting sexual dimorphism in peroxisomal activation. Concurring with the sex-related changes, mitochondrial respiration rates were stronger in IUGR female fetal cardiomyocytes, accounting for enhanced adenosine 5'-triphosphate production. Mitochondrial biogenesis was induced in fetal hearts with elevated expression of Ppargc1a transcript specifically in IUGR females. Lipidomic analysis identified the accumulation of arachidonic, eicosapentaenoic, and docosapentaenoic polyunsaturated long-chain fatty acids (LCFAs) in IUGR fetal hearts, which leads to nuclear receptor peroxisome proliferator-activated receptor α (PPARα) transcriptional activation in cardiomyocytes. Also, the enrichment of H3K27ac chromatin marks to PPARα-responsive metabolic genes in IUGR fetal hearts outlines an epigenetic control in the early metabolic energy switch. CONCLUSION This study describes a premature and sex-related remodeling of cardiac metabolism in response to an unfavorable intrauterine environment, with specific LCFAs that may serve as predictive effectors leading to IUGR.
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Affiliation(s)
- Loïze Maréchal
- Department of Pharmacology & Physiology, Faculty of Medicine, Université de Montréal, Montreal, Quebec H3T 1J4, Canada
- Research Center, CHU Ste-Justine, Montréal, Quebec H3T 1C5, Canada
| | - Benoit Sicotte
- Department of Pharmacology & Physiology, Faculty of Medicine, Université de Montréal, Montreal, Quebec H3T 1J4, Canada
| | - Véronique Caron
- Research Center, CHU Ste-Justine, Montréal, Quebec H3T 1C5, Canada
| | - Michèle Brochu
- Department of Pharmacology & Physiology, Faculty of Medicine, Université de Montréal, Montreal, Quebec H3T 1J4, Canada
| | - André Tremblay
- Research Center, CHU Ste-Justine, Montréal, Quebec H3T 1C5, Canada
- Department of Obstetrics & Gynecology, Faculty of Medicine, Université de Montréal, Montreal, Quebec H3T 1J4, Canada
- Centre de Recherche en Reproduction et Fertilité, Université de Montréal, Saint-Hyacinthe, Quebec J2S 2M2, Canada
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Guan H, Guo Y, Zhu L, Jiao Y, Liu X. Peroxisome Deficiency Dysregulates Fatty Acid Oxidization and Exacerbates Lipotoxicity in β Cells. Oxid Med Cell Longev 2021; 2021:7726058. [PMID: 34471469 PMCID: PMC8405300 DOI: 10.1155/2021/7726058] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 08/01/2021] [Accepted: 08/06/2021] [Indexed: 12/12/2022]
Abstract
An adverse intrauterine environment impairs the development of pancreatic islets in the fetus and leads to insufficient β cell mass and β cell dysfunction. We previously reported that Pex14, a peroxin protein involved in the biogenesis and degradation of peroxisomes, is markedly reduced in the pancreas of an intrauterine growth restriction fetus and last into adulthood. Peroxisomes function in a wide range of metabolic processes including fatty acid oxidization, ROS detoxification, and anti-inflammatory responses. To elucidate the impact of downregulation of the Pex14 gene on β cell, Pex14 was knocked down by siRNA in INS-1 cells. Pex14 knockdown disturbed peroxisomal biogenesis and dysregulated fatty acid metabolism and lipid storage capability, thereby increased ROS level and blunted insulin secretion. Moreover, Pex14 knockdown upregulated inflammation factors and regulators of endoplasmic reticulum stress. The lipotoxicity of fatty acid (including palmitic acid and linoleic acid) in β cells was exacerbated by knockdown of Pex14, as indicated by H2O2 accumulation and increased programmed cell death. The present results demonstrate the vital role of Pex14 in maintaining normal peroxisome function and β cell viability and highlight the importance of a functional peroxisomal metabolism for the detoxification of excess FAs in β cells.
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Affiliation(s)
- Hongbo Guan
- Key Laboratory of Maternal-Fetal Medicine of Liaoning Province, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Yanyan Guo
- Key Laboratory of Maternal-Fetal Medicine of Liaoning Province, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Liangliang Zhu
- Key Laboratory of Maternal-Fetal Medicine of Liaoning Province, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Yisheng Jiao
- Key Laboratory of Maternal-Fetal Medicine of Liaoning Province, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Xiaomei Liu
- Key Laboratory of Maternal-Fetal Medicine of Liaoning Province, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang 110004, China
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Li W, Zhang Q, Wang X, Wang H, Zuo W, Xie H, Tang J, Wang M, Zeng Z, Cai W, Tang D, Dai Y. Comparative Proteomic Analysis to Investigate the Pathogenesis of Oral Adenoid Cystic Carcinoma. ACS Omega 2021; 6:18623-18634. [PMID: 34337202 PMCID: PMC8319923 DOI: 10.1021/acsomega.1c01270] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 07/07/2021] [Indexed: 05/25/2023]
Abstract
Adenoid cystic carcinoma (ACC) belongs to salivary gland malignancies commonly occurring in an oral cavity with a poor long-term prognosis. The potential biomarkers and cellular functions acting on local recurrences and distant metastases remain to be illustrated. Proteomics is the core content of precision medicine research, which provides accurate information for early detection of cancer, benign and malignant diagnosis, classification and personalized medication, efficacy monitoring, and prognosis judgment. To obtain a comprehensive regulation network and supply clues for the treatment of oral ACC (OACC), we utilized mass spectrometry-based quantitative proteomics to analyze the protein expression profile in paired tumor and adjacent normal tissues. We identified a total of 40,547 specific peptides and 4454 differentially expressed proteins (DEPs), in which HAPLN1 was the most upregulated protein and BPIFB1 was the most downregulated. Then, we annotated the functions and characteristics of DEPs in detail from the aspects of gene ontology, subcellular structural localization, KEGG, and protein domain to thoroughly understand the identified and quantified proteins. Glycosphingolipid biosynthesis and glycosaminoglycan degradation pathways showed the biggest difference according to KEGG analysis. Moreover, we confirmed 20 proteins from the ECM-receptor signaling pathway by a parallel reaction monitoring quantitative detection and 19 proteins were quantified. This study provides useful insights to analyze DEPs in OACC and guide in-depth thinking of the pathogenesis from a proteomics view for anticancer mechanisms and potential biomarkers.
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Affiliation(s)
- Wen Li
- Carson
International Cancer Centre, Shenzhen University General Hospital
and Shenzhen University Clinical Medical Academy Centre, Shenzhen University, 1098 Xueyuan Road, Shenzhen, Guangdong 518000, China
- Key
Laboratory of Optoelectronic Devices and Systems, College of Physics
and Optoelectronic Engineering, Shenzhen
University, Shenzhen 518060, China
- Health
Science Center, School of Medicine, Shenzhen
University, Shenzhen 518060, China
| | - Qian Zhang
- Carson
International Cancer Centre, Shenzhen University General Hospital
and Shenzhen University Clinical Medical Academy Centre, Shenzhen University, 1098 Xueyuan Road, Shenzhen, Guangdong 518000, China
- Key
Laboratory of Optoelectronic Devices and Systems, College of Physics
and Optoelectronic Engineering, Shenzhen
University, Shenzhen 518060, China
- Health
Science Center, School of Medicine, Shenzhen
University, Shenzhen 518060, China
| | - Xiaobin Wang
- Carson
International Cancer Centre, Shenzhen University General Hospital
and Shenzhen University Clinical Medical Academy Centre, Shenzhen University, 1098 Xueyuan Road, Shenzhen, Guangdong 518000, China
- Key
Laboratory of Optoelectronic Devices and Systems, College of Physics
and Optoelectronic Engineering, Shenzhen
University, Shenzhen 518060, China
- Health
Science Center, School of Medicine, Shenzhen
University, Shenzhen 518060, China
| | - Hanlin Wang
- Health
Science Center, School of Medicine, Shenzhen
University, Shenzhen 518060, China
| | - Wenxin Zuo
- Clinical
Medical Research Center, Guangdong Provincial Engineering Research
Center of Autoimmune Disease Precision Medicine, Shenzhen Engineering
Research Center of Autoimmune Disease, The Second Clinical Medical
College of Jinan University, The First Affiliated Hospital of Southern
University of Science and Technology, Shenzhen
People’s Hospital, Shenzhen, Guangdong 518020, China
| | - Hongliang Xie
- Clinical
Medical Research Center, Guangdong Provincial Engineering Research
Center of Autoimmune Disease Precision Medicine, Shenzhen Engineering
Research Center of Autoimmune Disease, The Second Clinical Medical
College of Jinan University, The First Affiliated Hospital of Southern
University of Science and Technology, Shenzhen
People’s Hospital, Shenzhen, Guangdong 518020, China
| | - Jianming Tang
- Clinical
Medical Research Center, Guangdong Provincial Engineering Research
Center of Autoimmune Disease Precision Medicine, Shenzhen Engineering
Research Center of Autoimmune Disease, The Second Clinical Medical
College of Jinan University, The First Affiliated Hospital of Southern
University of Science and Technology, Shenzhen
People’s Hospital, Shenzhen, Guangdong 518020, China
| | - Mengmeng Wang
- Clinical
Medical Research Center, Guangdong Provincial Engineering Research
Center of Autoimmune Disease Precision Medicine, Shenzhen Engineering
Research Center of Autoimmune Disease, The Second Clinical Medical
College of Jinan University, The First Affiliated Hospital of Southern
University of Science and Technology, Shenzhen
People’s Hospital, Shenzhen, Guangdong 518020, China
| | - Zhipeng Zeng
- Clinical
Medical Research Center, Guangdong Provincial Engineering Research
Center of Autoimmune Disease Precision Medicine, Shenzhen Engineering
Research Center of Autoimmune Disease, The Second Clinical Medical
College of Jinan University, The First Affiliated Hospital of Southern
University of Science and Technology, Shenzhen
People’s Hospital, Shenzhen, Guangdong 518020, China
| | - Wanxia Cai
- Clinical
Medical Research Center, Guangdong Provincial Engineering Research
Center of Autoimmune Disease Precision Medicine, Shenzhen Engineering
Research Center of Autoimmune Disease, The Second Clinical Medical
College of Jinan University, The First Affiliated Hospital of Southern
University of Science and Technology, Shenzhen
People’s Hospital, Shenzhen, Guangdong 518020, China
| | - Donge Tang
- Clinical
Medical Research Center, Guangdong Provincial Engineering Research
Center of Autoimmune Disease Precision Medicine, Shenzhen Engineering
Research Center of Autoimmune Disease, The Second Clinical Medical
College of Jinan University, The First Affiliated Hospital of Southern
University of Science and Technology, Shenzhen
People’s Hospital, Shenzhen, Guangdong 518020, China
| | - Yong Dai
- Clinical
Medical Research Center, Guangdong Provincial Engineering Research
Center of Autoimmune Disease Precision Medicine, Shenzhen Engineering
Research Center of Autoimmune Disease, The Second Clinical Medical
College of Jinan University, The First Affiliated Hospital of Southern
University of Science and Technology, Shenzhen
People’s Hospital, Shenzhen, Guangdong 518020, China
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