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Zhang Y, Wang X, Chen G, Lu Y, Chen Q. Autocrine motility factor receptor promotes the malignancy of glioblastoma by regulating cell migration and invasion. Neurol Res 2024; 46:89-97. [PMID: 37703903 DOI: 10.1080/01616412.2023.2257463] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 07/30/2023] [Indexed: 09/15/2023]
Abstract
OBJECTIVE One of the important causes of death in cancer patients is malignant metastasis, invasion, and metastasis of tumor cells. Metastasis is also the most basic physiological characteristics and pathogenesis of various tumors. Previously published studies have suggested that autocrine motor factor receptor (AMFR) is the key regulator of tumor cell migration and invasion. Meanwhile, AMFR is highly expressed in esophageal tumors, gastrointestinal tumors, and bladder cancer, and it is also involved in its pathogenesis. However, the role of AMFR in glioblastoma has not been reported. METHODS In order to study the role of AMFR in the cell migration and invasion of glioblastoma, AMFR was silenced using siRNA and overexpressed using cDNA. Immunoblotting analysis and real-time quantitative polymerase chain reaction (PCR) were employed to assess the expression of AMFR. We conducted wound healing assay, cell migration assay, and tumorsphere formation assay to detect the invasion and metastatic ability of glioblastoma. RESULTS This study found that the level of AMFR expression was significantly correlated with the malignant degree of glioma tissue in clinic samples. AMFR silencing decreased cell migration and invasion of LN229. Overexpression of AMFR significantly increased cell migration and invasion of U251. CONCLUSION This study suggests that AMFR could be used as a therapeutic strategy for the clinical treatment of glioblastoma.
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Affiliation(s)
- Yao Zhang
- Department of Endocrinology, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiuping Wang
- Department of Pharmacy, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Guanghui Chen
- Department of Pharmacy, Renmin Hospital, Wuhan University, Wuhan, China
| | - Yajing Lu
- Institute of geriatric medicine, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qiang Chen
- Department of Pharmacy, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Li C, Wu Y, Chen K, Chen R, Xu S, Yang B, Lian Z, Wang X, Wang K, Xie H, Zheng S, Liu Z, Wang D, Xu X. Gp78 deficiency in hepatocytes alleviates hepatic ischemia-reperfusion injury via suppressing ACSL4-mediated ferroptosis. Cell Death Dis 2023; 14:810. [PMID: 38065978 PMCID: PMC10709349 DOI: 10.1038/s41419-023-06294-x] [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] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 11/02/2023] [Accepted: 11/13/2023] [Indexed: 12/18/2023]
Abstract
Ferroptosis, which is driven by iron-dependent lipid peroxidation, plays an essential role in liver ischemia-reperfusion injury (IRI) during liver transplantation (LT). Gp78, an E3 ligase, has been implicated in lipid metabolism and inflammation. However, its role in liver IRI and ferroptosis remains unknown. Here, hepatocyte-specific gp78 knockout (HKO) or overexpressed (OE) mice were generated to examine the effect of gp78 on liver IRI, and a multi-omics approach (transcriptomics, proteomics, and metabolomics) was performed to explore the potential mechanism. Gp78 expression decreased after reperfusion in LT patients and mice with IRI, and gp78 expression was positively correlated with liver damage. Gp78 absence from hepatocytes alleviated liver damage in mice with IRI, ameliorating inflammation. However, mice with hepatic gp78 overexpression showed the opposite phenotype. Mechanistically, gp78 overexpression disturbed lipid homeostasis, remodeling polyunsaturated fatty acid (PUFA) metabolism, causing oxidized lipids accumulation and ferroptosis, partly by promoting ACSL4 expression. Chemical inhibition of ferroptosis or ACSL4 abrogated the effects of gp78 on ferroptosis and liver IRI. Our findings reveal a role of gp78 in liver IRI pathogenesis and uncover a mechanism by which gp78 promotes hepatocyte ferroptosis by ACSL4, suggesting the gp78-ACSL4 axis as a feasible target for the treatment of IRI-associated liver damage.
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Affiliation(s)
- Changbiao Li
- Zhejiang University School of Medicine, Hangzhou, 310058, China
- NHC Key Laboratory of Combined Multi-organ Transplantation, Hangzhou, 310003, China
- Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province, Hangzhou, 310006, China
| | - Yichao Wu
- Zhejiang University School of Medicine, Hangzhou, 310058, China
- NHC Key Laboratory of Combined Multi-organ Transplantation, Hangzhou, 310003, China
- Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province, Hangzhou, 310006, China
| | - Kangchen Chen
- Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province, Hangzhou, 310006, China
| | - Ronggao Chen
- Department of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310003, China
| | - Shengjun Xu
- Zhejiang University School of Medicine, Hangzhou, 310058, China
- Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province, Hangzhou, 310006, China
| | - Beng Yang
- Department of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310003, China
| | - Zhengxing Lian
- Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province, Hangzhou, 310006, China
| | - Xiaodong Wang
- The Fourth School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Kai Wang
- Zhejiang University School of Medicine, Hangzhou, 310058, China
- Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province, Hangzhou, 310006, China
| | - Haiyang Xie
- NHC Key Laboratory of Combined Multi-organ Transplantation, Hangzhou, 310003, China
- Department of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310003, China
| | - Shusen Zheng
- NHC Key Laboratory of Combined Multi-organ Transplantation, Hangzhou, 310003, China
- Department of Hepatobiliary and Pancreatic Surgery, Shulan (Hangzhou) Hospital, Hangzhou, 311112, China
| | - Zhikun Liu
- Zhejiang University School of Medicine, Hangzhou, 310058, China.
- Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province, Hangzhou, 310006, China.
| | - Di Wang
- Institute of Immunology and Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China.
- Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou, China.
| | - Xiao Xu
- Zhejiang University School of Medicine, Hangzhou, 310058, China.
- NHC Key Laboratory of Combined Multi-organ Transplantation, Hangzhou, 310003, China.
- Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province, Hangzhou, 310006, China.
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3
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Deng R, Medico-Salsench E, Nikoncuk A, Ramakrishnan R, Lanko K, Kühn NA, van der Linde HC, Lor-Zade S, Albuainain F, Shi Y, Yousefi S, Capo I, van den Herik EM, van Slegtenhorst M, van Minkelen R, Geeven G, Mulder MT, Ruijter GJG, Lütjohann D, Jacobs EH, Houlden H, Pagnamenta AT, Metcalfe K, Jackson A, Banka S, De Simone L, Schwaede A, Kuntz N, Palculict TB, Abbas S, Umair M, AlMuhaizea M, Colak D, AlQudairy H, Alsagob M, Pereira C, Trunzo R, Karageorgou V, Bertoli-Avella AM, Bauer P, Bouman A, Hoefsloot LH, van Ham TJ, Issa M, Zaki MS, Gleeson JG, Willemsen R, Kaya N, Arold ST, Maroofian R, Sanderson LE, Barakat TS. AMFR dysfunction causes autosomal recessive spastic paraplegia in human that is amenable to statin treatment in a preclinical model. Acta Neuropathol 2023; 146:353-368. [PMID: 37119330 PMCID: PMC10328903 DOI: 10.1007/s00401-023-02579-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 04/17/2023] [Accepted: 04/18/2023] [Indexed: 05/01/2023]
Abstract
Hereditary spastic paraplegias (HSP) are rare, inherited neurodegenerative or neurodevelopmental disorders that mainly present with lower limb spasticity and muscle weakness due to motor neuron dysfunction. Whole genome sequencing identified bi-allelic truncating variants in AMFR, encoding a RING-H2 finger E3 ubiquitin ligase anchored at the membrane of the endoplasmic reticulum (ER), in two previously genetically unexplained HSP-affected siblings. Subsequently, international collaboration recognized additional HSP-affected individuals with similar bi-allelic truncating AMFR variants, resulting in a cohort of 20 individuals from 8 unrelated, consanguineous families. Variants segregated with a phenotype of mainly pure but also complex HSP consisting of global developmental delay, mild intellectual disability, motor dysfunction, and progressive spasticity. Patient-derived fibroblasts, neural stem cells (NSCs), and in vivo zebrafish modeling were used to investigate pathomechanisms, including initial preclinical therapy assessment. The absence of AMFR disturbs lipid homeostasis, causing lipid droplet accumulation in NSCs and patient-derived fibroblasts which is rescued upon AMFR re-expression. Electron microscopy indicates ER morphology alterations in the absence of AMFR. Similar findings are seen in amfra-/- zebrafish larvae, in addition to altered touch-evoked escape response and defects in motor neuron branching, phenocopying the HSP observed in patients. Interestingly, administration of FDA-approved statins improves touch-evoked escape response and motor neuron branching defects in amfra-/- zebrafish larvae, suggesting potential therapeutic implications. Our genetic and functional studies identify bi-allelic truncating variants in AMFR as a cause of a novel autosomal recessive HSP by altering lipid metabolism, which may potentially be therapeutically modulated using precision medicine with statins.
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Affiliation(s)
- Ruizhi Deng
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Whole Genome Sequencing Implementation and Research Task Force, Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Eva Medico-Salsench
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Anita Nikoncuk
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Reshmi Ramakrishnan
- Bioscience Program, Biological and Environmental Science and Engineering Division, Computational Bioscience Research Center, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900 Saudi Arabia
| | - Kristina Lanko
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Nikolas A. Kühn
- Department of Cell Biology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Herma C. van der Linde
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Sarah Lor-Zade
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Fatimah Albuainain
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Yuwei Shi
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Soheil Yousefi
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Whole Genome Sequencing Implementation and Research Task Force, Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Ivan Capo
- Department for Histology and Embryology, Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia
| | | | - Marjon van Slegtenhorst
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Rick van Minkelen
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Geert Geeven
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Whole Genome Sequencing Implementation and Research Task Force, Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Monique T. Mulder
- Department of Internal Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - George J. G. Ruijter
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Dieter Lütjohann
- Institute of Clinical Chemistry and Clinical Pharmacology, University Hospital Bonn, Bonn, Germany
| | - Edwin H. Jacobs
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Henry Houlden
- Department of Neuromuscular Disorders, UCL Queen Square Institute of Neurology, London, UK
| | - Alistair T. Pagnamenta
- NIHR Biomedical Research Centre, Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
| | - Kay Metcalfe
- Manchester Centre for Genomic Medicine, St Mary’s Hospital, Health Innovation Manchester, Manchester University Foundation NHS Trust, Manchester, UK
- Division of Evolution, Infection and Genomics, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, M13 9PL UK
| | - Adam Jackson
- Manchester Centre for Genomic Medicine, St Mary’s Hospital, Health Innovation Manchester, Manchester University Foundation NHS Trust, Manchester, UK
- Division of Evolution, Infection and Genomics, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, M13 9PL UK
| | - Siddharth Banka
- Manchester Centre for Genomic Medicine, St Mary’s Hospital, Health Innovation Manchester, Manchester University Foundation NHS Trust, Manchester, UK
- Division of Evolution, Infection and Genomics, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, M13 9PL UK
| | - Lenika De Simone
- Division of Neurology, Division of Genetics, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, USA
| | - Abigail Schwaede
- Division of Neurology, Division of Genetics, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, USA
| | - Nancy Kuntz
- Division of Neurology, Division of Genetics, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, USA
| | | | - Safdar Abbas
- Department of Biological Science, Dartmouth College, Hanover, NH USA
| | - Muhammad Umair
- Medical Genomics Research Department, King Abdullah International Medical Research Center (KAIMRC), King Saud Bin Abdulaziz University for Health Sciences, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia
- Department of Life Sciences, School of Science, University of Management and Technology (UMT), Lahore, Pakistan
| | - Mohammed AlMuhaizea
- Neuroscience Centre, King Faisal Specialist Hospital and Research Centre (KFSHRC), MBC: 76, Riyadh, 11211 Saudi Arabia
| | - Dilek Colak
- Molecular Oncology Department, King Faisal Specialist Hospital and Research Centre (KFSHRC), MBC: 03, Riyadh, 11211 Saudi Arabia
| | - Hanan AlQudairy
- Translational Genomics Department, Center for Genomics Medicine, King Faisal Specialist Hospital and Research Centre, MBC: 26, PO Box: 3354, Riyadh, 11211 Saudi Arabia
| | - Maysoon Alsagob
- Translational Genomics Department, Center for Genomics Medicine, King Faisal Specialist Hospital and Research Centre, MBC: 26, PO Box: 3354, Riyadh, 11211 Saudi Arabia
- Applied Genomics Technologies Institute, King Abdulaziz City for Science and Technology (KACST), Riyadh, Saudi Arabia
| | | | | | | | | | | | - Arjan Bouman
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Lies H. Hoefsloot
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Whole Genome Sequencing Implementation and Research Task Force, Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Tjakko J. van Ham
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Whole Genome Sequencing Implementation and Research Task Force, Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Mahmoud Issa
- Clinical Genetics Department, Human Genetics and Genome Research Institute, National Research Centre, Cairo, Egypt
| | - Maha S. Zaki
- Clinical Genetics Department, Human Genetics and Genome Research Institute, National Research Centre, Cairo, Egypt
| | - Joseph G. Gleeson
- Departments of Neurosciences and Pediatrics, Howard Hughes Medical Institute, University of California, Rady Children’s Institute for Genomic Medicine, San Diego, USA
| | - Rob Willemsen
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Namik Kaya
- Translational Genomics Department, Center for Genomics Medicine, King Faisal Specialist Hospital and Research Centre, MBC: 26, PO Box: 3354, Riyadh, 11211 Saudi Arabia
| | - Stefan T. Arold
- Bioscience Program, Biological and Environmental Science and Engineering Division, Computational Bioscience Research Center, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900 Saudi Arabia
- Centre de Biologie Structurale, CNRS, INSERM, Université de Montpellier, 34090 Montpellier, France
| | - Reza Maroofian
- Department of Neuromuscular Disorders, UCL Queen Square Institute of Neurology, London, UK
| | - Leslie E. Sanderson
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Tahsin Stefan Barakat
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Whole Genome Sequencing Implementation and Research Task Force, Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- ENCORE Expertise Center for Neurodevelopmental Disorders, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Discovery Unit, Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
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4
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Chao FA, Khago D, Byrd RA. Achieving pure spin effects by artifact suppression in methyl adiabatic relaxation experiments. J Biomol NMR 2020; 74:223-228. [PMID: 32333192 PMCID: PMC7430055 DOI: 10.1007/s10858-020-00312-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Accepted: 04/08/2020] [Indexed: 06/04/2023]
Abstract
Recent methyl adiabatic relaxation dispersion experiments provide examination of conformational dynamics across a very wide timescale (102-105 s-1) and, particularly, provide insight into the hydrophobic core of proteins and allosteric effects associated with modulators. The experiments require efficient decoupling of 1H and 13C spin interactions, and some artifacts have been discovered, which are associated with the design of the proton decoupling scheme. The experimental data suggest that the original design is valid; however, pulse sequences with either no proton decoupling or proton decoupling with imperfect pulses can potentially exhibit complications in the experiments. Here, we demonstrate that pulse imperfections in the proton decoupling scheme can be dramatically alleviated by using a single composite π pulse and provide pure single-exponential relaxation data. It allows the opportunity to access high-quality methyl adiabatic relaxation dispersion data by removing the cross-correlation between dipole-dipole interaction and chemical shift anisotropy. The resulting high-quality data is illustrated with the binding of an allosteric modulator (G2BR) to the ubiquitin conjugating enzyme Ube2g2.
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Affiliation(s)
- Fa-An Chao
- Structural Biophysics Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD, 21702-1201, USA
| | - Domarin Khago
- Structural Biophysics Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD, 21702-1201, USA
| | - R Andrew Byrd
- Structural Biophysics Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD, 21702-1201, USA.
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5
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Gong XM, Li YF, Luo J, Wang JQ, Wei J, Wang JQ, Xiao T, Xie C, Hong J, Ning G, Shi XJ, Li BL, Qi W, Song BL. Gpnmb secreted from liver promotes lipogenesis in white adipose tissue and aggravates obesity and insulin resistance. Nat Metab 2019; 1:570-583. [PMID: 32694855 DOI: 10.1038/s42255-019-0065-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 04/05/2019] [Indexed: 12/13/2022]
Abstract
Metabolism in mammals is regulated by complex interplay among different organs. Fatty acid synthesis is increased in white adipose tissue (WAT) when it is inhibited in the liver. Here we identify glycoprotein non-metastatic melanoma protein B (Gpnmb) as one liver-WAT cross-talk factor involved in lipogenesis. Inhibition of the hepatic sterol regulatory element-binding protein pathway leads to increased transcription of Gpnmb and promotes processing of the membrane protein to a secreted form. Gpnmb stimulates lipogenesis in WAT and exacerbates diet-induced obesity and insulin resistance. In humans, Gpnmb is tightly associated with body mass index and is a strong risk factor for obesity. Gpnmb inhibition by a neutralizing antibody or liver-specific knockdown improves metabolic parameters, including weight gain reduction and increased insulin sensitivity, probably by promoting the beiging of WAT. These results suggest that Gpnmb is a liver-secreted factor regulating lipogenesis in WAT, and that Gpnmb inhibition may provide a therapeutic strategy in obesity and diabetes.
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Affiliation(s)
- Xue-Min Gong
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Institute for Advanced Studies, Wuhan University, Wuhan, China
- The State Key Laboratory of Molecular Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China
| | - Yun-Feng Li
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Institute for Advanced Studies, Wuhan University, Wuhan, China
| | - Jie Luo
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Institute for Advanced Studies, Wuhan University, Wuhan, China
| | - Ji-Qiu Wang
- Shanghai Clinical Center for Endocrine and Metabolic Diseases, Department of Endocrinology and Metabolism, State Key Laboratory of Medical Genomes, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jian Wei
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Institute for Advanced Studies, Wuhan University, Wuhan, China
| | - Ju-Qiong Wang
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Institute for Advanced Studies, Wuhan University, Wuhan, China
| | - Ting Xiao
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Institute for Advanced Studies, Wuhan University, Wuhan, China
| | - Chang Xie
- The State Key Laboratory of Molecular Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Jie Hong
- Shanghai Clinical Center for Endocrine and Metabolic Diseases, Department of Endocrinology and Metabolism, State Key Laboratory of Medical Genomes, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Guang Ning
- Shanghai Clinical Center for Endocrine and Metabolic Diseases, Department of Endocrinology and Metabolism, State Key Laboratory of Medical Genomes, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiong-Jie Shi
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Institute for Advanced Studies, Wuhan University, Wuhan, China
| | - Bo-Liang Li
- The State Key Laboratory of Molecular Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Wei Qi
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China.
| | - Bao-Liang Song
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Institute for Advanced Studies, Wuhan University, Wuhan, China.
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6
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Menzies SA, Volkmar N, van den Boomen DJH, Timms RT, Dickson AS, Nathan JA, Lehner PJ. The sterol-responsive RNF145 E3 ubiquitin ligase mediates the degradation of HMG-CoA reductase together with gp78 and Hrd1. eLife 2018; 7:e40009. [PMID: 30543180 PMCID: PMC6292692 DOI: 10.7554/elife.40009] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 11/19/2018] [Indexed: 02/02/2023] Open
Abstract
Mammalian HMG-CoA reductase (HMGCR), the rate-limiting enzyme of the cholesterol biosynthetic pathway and the therapeutic target of statins, is post-transcriptionally regulated by sterol-accelerated degradation. Under cholesterol-replete conditions, HMGCR is ubiquitinated and degraded, but the identity of the E3 ubiquitin ligase(s) responsible for mammalian HMGCR turnover remains controversial. Using systematic, unbiased CRISPR/Cas9 genome-wide screens with a sterol-sensitive endogenous HMGCR reporter, we comprehensively map the E3 ligase landscape required for sterol-accelerated HMGCR degradation. We find that RNF145 and gp78 independently co-ordinate HMGCR ubiquitination and degradation. RNF145, a sterol-responsive ER-resident E3 ligase, is unstable but accumulates following sterol depletion. Sterol addition triggers RNF145 recruitment to HMGCR via Insigs, promoting HMGCR ubiquitination and proteasome-mediated degradation. In the absence of both RNF145 and gp78, Hrd1, a third UBE2G2-dependent E3 ligase, partially regulates HMGCR activity. Our findings reveal a critical role for the sterol-responsive RNF145 in HMGCR regulation and elucidate the complexity of sterol-accelerated HMGCR degradation. Editorial note This article has been through an editorial process in which the authors decide how to respond to the issues raised during peer review. The Reviewing Editor's assessment is that all the issues have been addressed (see decision letter).
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Affiliation(s)
- Sam A Menzies
- Department of MedicineCambridge Institute for Medical ResearchCambridgeUnited Kingdom
| | - Norbert Volkmar
- Department of MedicineCambridge Institute for Medical ResearchCambridgeUnited Kingdom
| | | | - Richard T Timms
- Department of MedicineCambridge Institute for Medical ResearchCambridgeUnited Kingdom
| | - Anna S Dickson
- Department of MedicineCambridge Institute for Medical ResearchCambridgeUnited Kingdom
| | - James A Nathan
- Department of MedicineCambridge Institute for Medical ResearchCambridgeUnited Kingdom
| | - Paul J Lehner
- Department of MedicineCambridge Institute for Medical ResearchCambridgeUnited Kingdom
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7
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Jiang LY, Jiang W, Tian N, Xiong YN, Liu J, Wei J, Wu KY, Luo J, Shi XJ, Song BL. Ring finger protein 145 (RNF145) is a ubiquitin ligase for sterol-induced degradation of HMG-CoA reductase. J Biol Chem 2018; 293:4047-4055. [PMID: 29374057 PMCID: PMC5857978 DOI: 10.1074/jbc.ra117.001260] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 01/15/2018] [Indexed: 12/21/2022] Open
Abstract
Cholesterol biosynthesis is tightly regulated in the cell. For example, high sterol concentrations can stimulate degradation of the rate-limiting cholesterol biosynthetic enzyme 3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMG-CoA reductase, HMGCR). HMGCR is broken down by the endoplasmic reticulum membrane-associated protein complexes consisting of insulin-induced genes (Insigs) and the E3 ubiquitin ligase gp78. Here we found that HMGCR degradation is partially blunted in Chinese hamster ovary (CHO) cells lacking gp78 (gp78-KO). To identify other ubiquitin ligase(s) that may function together with gp78 in triggering HMGCR degradation, we performed a small-scale short hairpin RNA-based screening targeting endoplasmic reticulum-localized E3s. We found that knockdown of both ring finger protein 145 (Rnf145) and gp78 genes abrogates sterol-induced degradation of HMGCR in CHO cells. We also observed that RNF145 interacts with Insig-1 and -2 proteins and ubiquitinates HMGCR. Moreover, the tetrapeptide sequence YLYF in the sterol-sensing domain and the Cys-537 residue in the RING finger domain were essential for RNF145 binding to Insigs and RNF145 E3 activity, respectively. Of note, amino acid substitutions in the YLYF or of Cys-537 completely abolished RNF145-mediated HMGCR degradation. In summary, our study reveals that RNF145, along with gp78, promotes HMGCR degradation in response to elevated sterol levels and identifies residues essential for RNF145 function.
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Affiliation(s)
- Lu-Yi Jiang
- From the Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Institute for Advanced Studies, Wuhan University, Wuhan 430072, China
| | - Wei Jiang
- From the Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Institute for Advanced Studies, Wuhan University, Wuhan 430072, China
| | - Na Tian
- From the Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Institute for Advanced Studies, Wuhan University, Wuhan 430072, China
| | - Yan-Ni Xiong
- From the Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Institute for Advanced Studies, Wuhan University, Wuhan 430072, China
| | - Jie Liu
- From the Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Institute for Advanced Studies, Wuhan University, Wuhan 430072, China
| | - Jian Wei
- From the Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Institute for Advanced Studies, Wuhan University, Wuhan 430072, China
| | - Kai-Yue Wu
- From the Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Institute for Advanced Studies, Wuhan University, Wuhan 430072, China
| | - Jie Luo
- From the Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Institute for Advanced Studies, Wuhan University, Wuhan 430072, China
| | - Xiong-Jie Shi
- From the Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Institute for Advanced Studies, Wuhan University, Wuhan 430072, China
| | - Bao-Liang Song
- From the Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Institute for Advanced Studies, Wuhan University, Wuhan 430072, China
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8
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Wang YJ, Bian Y, Luo J, Lu M, Xiong Y, Guo SY, Yin HY, Lin X, Li Q, Chang CCY, Chang TY, Li BL, Song BL. Cholesterol and fatty acids regulate cysteine ubiquitylation of ACAT2 through competitive oxidation. Nat Cell Biol 2017; 19:808-819. [PMID: 28604676 PMCID: PMC5518634 DOI: 10.1038/ncb3551] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 05/10/2017] [Indexed: 12/26/2022]
Abstract
Ubiquitin linkage to cysteine is an unconventional modification targeting protein for degradation. However, the physiological regulation of cysteine ubiquitylation is still mysterious. Here we found that ACAT2, a cellular enzyme converting cholesterol and fatty acid to cholesteryl esters, was ubiquitylated on Cys277 for degradation when the lipid level was low. gp78-Insigs catalysed Lys48-linked polyubiquitylation on this Cys277. A high concentration of cholesterol and fatty acid, however, induced cellular reactive oxygen species (ROS) that oxidized Cys277, resulting in ACAT2 stabilization and subsequently elevated cholesteryl esters. Furthermore, ACAT2 knockout mice were more susceptible to high-fat diet-associated insulin resistance. By contrast, expression of a constitutively stable form of ACAT2 (C277A) resulted in higher insulin sensitivity. Together, these data indicate that lipid-induced stabilization of ACAT2 ameliorates lipotoxicity from excessive cholesterol and fatty acid. This unconventional cysteine ubiquitylation of ACAT2 constitutes an important mechanism for sensing lipid-overload-induced ROS and fine-tuning lipid homeostasis.
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Affiliation(s)
- Yong-Jian Wang
- The State Key Laboratory of Molecular Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 320 Yue-Yang Road, Shanghai 200031, China
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, China
| | - Yan Bian
- The State Key Laboratory of Molecular Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 320 Yue-Yang Road, Shanghai 200031, China
| | - Jie Luo
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, the Institute for Advanced Studies, Wuhan University, Wuhan 430072, China
| | - Ming Lu
- The State Key Laboratory of Molecular Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 320 Yue-Yang Road, Shanghai 200031, China
| | - Ying Xiong
- The State Key Laboratory of Molecular Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 320 Yue-Yang Road, Shanghai 200031, China
| | - Shu-Yuan Guo
- Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Hui-Yong Yin
- Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Xu Lin
- Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Qin Li
- The State Key Laboratory of Molecular Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 320 Yue-Yang Road, Shanghai 200031, China
| | - Catherine CY Chang
- Department of Biochemistry, Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA
| | - Ta-Yuan Chang
- Department of Biochemistry, Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA
| | - Bo-Liang Li
- The State Key Laboratory of Molecular Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 320 Yue-Yang Road, Shanghai 200031, China
| | - Bao-Liang Song
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, the Institute for Advanced Studies, Wuhan University, Wuhan 430072, China
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9
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Zhang T, Kho DH, Wang Y, Harazono Y, Nakajima K, Xie Y, Raz A. Gp78, an E3 ubiquitin ligase acts as a gatekeeper suppressing nonalcoholic steatohepatitis (NASH) and liver cancer. PLoS One 2015; 10:e0118448. [PMID: 25789613 PMCID: PMC4366401 DOI: 10.1371/journal.pone.0118448] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Accepted: 01/16/2015] [Indexed: 12/13/2022] Open
Abstract
Nonalcoholic steatohepatitis (NASH) is related to metabolic dysregulation and the perturbation of endoplasmic reticulum (ER) homeostasis that frequently develops into hepatocellular carcinoma (HCC). Gp78 is E3 ligase, which regulates endoplasmic reticulum-associated degradation (ERAD) by ubiquitinylation of misfolded ER proteins. Here, we report that upon ageing (12 months), gp78-/- mice developed obesity, recapitulating age-related human NASH. Liver histology of gp78-/- mice revealed typical steatosis, hepatic inflammation and fibrosis, followed by progression to hepatocellular tumors. Acute ER stress revealed that loss of gp78 results in up regulation of unfolded protein response (UPR) pathways and SREBP-1 regulating de novo lipogenesis, responsible for fatty liver. Tissue array of human hepatocellular carcinoma (HCC) demonstrated that the expression of gp78 was inversely correlated with clinical grades of cancer. Here, we have described the generation of the first preclinical experimental model system which spontaneously develops age-related NASH and HCC, linking ERAD to hepatosteatosis, cirrhosis, and cancer. It suggests that gp78 is a regulator of normal liver homeostasis and a tumor suppressor in human liver.
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Affiliation(s)
- Tianpeng Zhang
- Departments of Oncology and Pathology, Wayne State University School of Medicine and the Karmanos Cancer Institute, Detroit, Michigan, United States of America
| | - Dhong Hyo Kho
- Departments of Oncology and Pathology, Wayne State University School of Medicine and the Karmanos Cancer Institute, Detroit, Michigan, United States of America
| | - Ying Wang
- Departments of Oncology and Pathology, Wayne State University School of Medicine and the Karmanos Cancer Institute, Detroit, Michigan, United States of America
| | - Yosuke Harazono
- Departments of Oncology and Pathology, Wayne State University School of Medicine and the Karmanos Cancer Institute, Detroit, Michigan, United States of America
| | - Kosei Nakajima
- Departments of Oncology and Pathology, Wayne State University School of Medicine and the Karmanos Cancer Institute, Detroit, Michigan, United States of America
| | - Youming Xie
- Departments of Oncology and Pathology, Wayne State University School of Medicine and the Karmanos Cancer Institute, Detroit, Michigan, United States of America
| | - Avraham Raz
- Departments of Oncology and Pathology, Wayne State University School of Medicine and the Karmanos Cancer Institute, Detroit, Michigan, United States of America
- * E-mail:
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