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Niu M, Whang H, Wu Z, Jiang S, Chen L. Deletion of Asb15b gene can lead to a significant decrease in zebrafish intermuscular bone. Gene 2024; 923:148561. [PMID: 38754570 DOI: 10.1016/j.gene.2024.148561] [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: 02/06/2024] [Revised: 05/01/2024] [Accepted: 05/13/2024] [Indexed: 05/18/2024]
Abstract
Intermuscular bones, which are present in numerous economically significant fish species, have a negative impact on the development of aquaculture. The Asb15b gene, primarily expressed in skeletal muscle, plays a crucial role in regulating protein turnover and the development of muscle fibers. It stimulates protein synthesis and controls the differentiation of muscle fibers. In this study, we employed CRISPR/Cas9 technology to generate homozygous zebrafish strains with 7 bp and 49 bp deletions in the Asb15b gene. Subsequent analyses using skeleton staining demonstrated a substantial reduction in the number of intermuscular bones in adult Asb15b-/- -7 bp and Asb15b-/- -49 bp mutants compared to the wild-type zebrafish, with decreases of 30 % (P < 0.001) and 40 % (P < 0.0001), respectively. Histological experiments further revealed that the diameter and number of muscle fibers in adult Asb15b-/- mutants did not exhibit significant changes when compared to wild-type zebrafish. Moreover, qRT-PCR experiments demonstrated significant differences in the expression of bmp6 and runx2b genes, which are key regulators of intermuscular bone development, during different stages of intermuscular bone development in Asb15b-/- mutants. This study strongly suggests that the Asb15b gene plays a crucial role in regulating intermuscular bone development in fish and lays the groundwork for further exploration of the role of the Asb15b gene in zebrafish intermuscular bone development.
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Affiliation(s)
- Minghui Niu
- College of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai 201306, China; Key Laboratory of Fishery Germplasm Resources Exploration and Utilization, Ministry of Education, Shanghai 201306, China
| | - Huamin Whang
- College of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai 201306, China; Key Laboratory of Fishery Germplasm Resources Exploration and Utilization, Ministry of Education, Shanghai 201306, China
| | - Zhichao Wu
- College of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai 201306, China; Key Laboratory of Fishery Germplasm Resources Exploration and Utilization, Ministry of Education, Shanghai 201306, China
| | - Shouwen Jiang
- College of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai 201306, China; Key Laboratory of Fishery Germplasm Resources Exploration and Utilization, Ministry of Education, Shanghai 201306, China
| | - Liangbiao Chen
- College of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai 201306, China; Key Laboratory of Fishery Germplasm Resources Exploration and Utilization, Ministry of Education, Shanghai 201306, China.
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2
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Pandino I, Giammaria S, Zingale GA, Roberti G, Michelessi M, Coletta M, Manni G, Agnifili L, Vercellin AV, Harris A, Oddone F, Sbardella D. Ubiquitin proteasome system and glaucoma: A survey of genetics and molecular biology studies supporting a link with pathogenic and therapeutic relevance. Mol Aspects Med 2023; 94:101226. [PMID: 37950974 DOI: 10.1016/j.mam.2023.101226] [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: 08/01/2023] [Revised: 10/28/2023] [Accepted: 10/29/2023] [Indexed: 11/13/2023]
Abstract
Glaucoma represents a group of progressive neurodegenerative diseases characterized by the loss of retinal ganglion cells (RGCs) and their axons with subsequent visual field impairment. The disease develops through largely uncharacterized molecular mechanisms, that are likely to occur in different localized cell types, either in the anterior (e.g., trabecular meshwork cells) or posterior (e.g., Muller glia, retinal ganglion cells) segments of the eye. Genomic and preclinical studies suggest that glaucoma pathogenesis may develop through altered ubiquitin (Ub) signaling. Ubiquitin conjugation, referred to as ubiquitylation, is a major post-synthetic modification catalyzed by E1-E2-E3 enzymes, that profoundly regulates the turnover, trafficking and biological activity of the targeted protein. The development of new technologies, including proteomics workflows, allows the biology of ubiquitin signaling to be described in health and disease. This post-translational modification is emerging as a key role player in neurodegeneration, gaining relevance for novel therapeutic options, such as in the case of Proteolysis Targeting Chimeras technology. Although scientific evidence supports a link between Ub and glaucoma, their relationship is still not well-understood. Therefore, this review provides a detailed research-oriented discussion on current evidence of Ub signaling in glaucoma. A review of genomic and genetic data is provided followed by an in-depth discussion of experimental data on ASB10, parkin and optineurin, which are proteins that play a key role in Ub signaling and have been associated with glaucoma.
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Affiliation(s)
| | | | | | | | | | | | - Gianluca Manni
- IRCCS Fondazione Bietti, Rome, Italy; DSCMT University of Tor Vergata, Rome, Italy
| | - Luca Agnifili
- Ophthalmology Clinic, Department of Medicine and Aging Science, University "G. D'Annunzio" of Chieti-Pescara, Italy
| | | | - Alon Harris
- Department of Ophthalmology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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Chou MC, Wang YH, Chen FY, Kung CY, Wu KP, Kuo JC, Chan SJ, Cheng ML, Lin CY, Chou YC, Ho MC, Firestine S, Huang JR, Chen RH. PAICS ubiquitination recruits UBAP2 to trigger phase separation for purinosome assembly. Mol Cell 2023; 83:4123-4140.e12. [PMID: 37848033 DOI: 10.1016/j.molcel.2023.09.028] [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: 01/16/2023] [Revised: 07/10/2023] [Accepted: 09/22/2023] [Indexed: 10/19/2023]
Abstract
Purinosomes serve as metabolons to enhance de novo purine synthesis (DNPS) efficiency through compartmentalizing DNPS enzymes during stressed conditions. However, the mechanism underpinning purinosome assembly and its pathophysiological functions remains elusive. Here, we show that K6-polyubiquitination of the DNPS enzyme phosphoribosylaminoimidazole carboxylase and phosphoribosylaminoimidazolesuccinocarboxamide synthetase (PAICS) by cullin-5/ankyrin repeat and SOCS box containing 11 (Cul5/ASB11)-based ubiquitin ligase plays a driving role in purinosome assembly. Upon several purinosome-inducing cues, ASB11 is upregulated by relieving the H3K9me3/HP1α-mediated transcriptional silencing, thus stimulating PAICS polyubiquitination. The polyubiquitinated PAICS recruits ubiquitin-associated protein 2 (UBAP2), a ubiquitin-binding protein with multiple stretches of intrinsically disordered regions, thereby inducing phase separation to trigger purinosome assembly for enhancing DNPS pathway flux. In human melanoma, ASB11 is highly expressed to facilitate a constitutive purinosome formation to which melanoma cells are addicted for supporting their proliferation, viability, and tumorigenesis in a xenograft model. Our study identifies a driving mechanism for purinosome assembly in response to cellular stresses and uncovers the impact of purinosome formation on human malignancies.
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Affiliation(s)
- Ming-Chieh Chou
- Institute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan; Institute of Biochemical Sciences, College of Life Science, National Taiwan University, Taipei 106, Taiwan
| | - Yi-Hsuan Wang
- Institute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan; Institute of Biochemical Sciences, College of Life Science, National Taiwan University, Taipei 106, Taiwan
| | - Fei-Yun Chen
- Institute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan
| | - Chun-Ying Kung
- Institute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan; Institute of Biochemical Sciences, College of Life Science, National Taiwan University, Taipei 106, Taiwan
| | - Kuen-Phon Wu
- Institute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan; Institute of Biochemical Sciences, College of Life Science, National Taiwan University, Taipei 106, Taiwan
| | - Jean-Cheng Kuo
- Institute of Biochemistry and Molecular Biology, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Shu-Jou Chan
- Institute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan
| | - Mei-Ling Cheng
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan; Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Clinical Metabolomics Core Laboratory, Chang Gung Memorial Hospital at Linkou, Taoyuan 333, Taiwan
| | - Chih-Yu Lin
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei 115, Taiwan
| | - Yu-Chi Chou
- Biomedical Translation Research Center, Academia Sinica, Taipei 115, Taiwan
| | - Meng-Chiao Ho
- Institute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan; Institute of Biochemical Sciences, College of Life Science, National Taiwan University, Taipei 106, Taiwan
| | - Steven Firestine
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI 48201, USA
| | - Jie-Rong Huang
- Institute of Biochemistry and Molecular Biology, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Ruey-Hwa Chen
- Institute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan; Institute of Biochemical Sciences, College of Life Science, National Taiwan University, Taipei 106, Taiwan.
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4
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Kwanten B, Deconick T, Walker C, Wang F, Landesman Y, Daelemans D. E3 ubiquitin ligase ASB8 promotes selinexor-induced proteasomal degradation of XPO1. Biomed Pharmacother 2023; 160:114305. [PMID: 36731340 DOI: 10.1016/j.biopha.2023.114305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 01/23/2023] [Accepted: 01/25/2023] [Indexed: 02/04/2023] Open
Abstract
Selinexor (KPT-330), a small-molecule inhibitor of exportin-1 (XPO1, CRM1) with potent anticancer activity, has recently been granted FDA approval for treatment of relapsed/refractory multiple myeloma and diffuse large B-cell lymphoma (DLBCL), with a number of additional indications currently under clinical investigation. Since selinexor has often demonstrated synergy when used in combination with other drugs, notably bortezomib and dexamethasone, a more comprehensive approach to uncover new beneficial interactions would be of great value. Moreover, stratifying patients, personalizing therapeutics and improving clinical outcomes requires a better understanding of the genetic vulnerabilities and resistance mechanisms underlying drug response. Here, we used CRISPR-Cas9 loss-of-function chemogenetic screening to identify drug-gene interactions with selinexor in chronic myeloid leukemia, multiple myeloma and DLBCL cell lines. We identified the TGFβ-SMAD4 pathway as an important mediator of resistance to selinexor in multiple myeloma cells. Moreover, higher activity of this pathway correlated with prolonged progression-free survival in multiple myeloma patients treated with selinexor, indicating that the TGFβ-SMAD4 pathway is a potential biomarker predictive of therapeutic outcome. In addition, we identified ASB8 (ankyrin repeat and SOCS box containing 8) as a shared modulator of selinexor sensitivity across all tested cancer types, with both ASB8 knockout and overexpression resulting in selinexor hypersensitivity. Mechanistically, we showed that ASB8 promotes selinexor-induced proteasomal degradation of XPO1. This study provides insight into the genetic factors that influence response to selinexor treatment and could support both the development of predictive biomarkers as well as new drug combinations.
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Affiliation(s)
- Bert Kwanten
- KU Leuven Department of Microbiology, Immunology and Transplantation, Laboratory of Virology and Chemotherapy (Rega Institute), Leuven, Belgium
| | - Tine Deconick
- KU Leuven Department of Microbiology, Immunology and Transplantation, Laboratory of Virology and Chemotherapy (Rega Institute), Leuven, Belgium
| | | | - Feng Wang
- Karyopharm Therapeutics, Newton, MA 02459, USA
| | | | - Dirk Daelemans
- KU Leuven Department of Microbiology, Immunology and Transplantation, Laboratory of Virology and Chemotherapy (Rega Institute), Leuven, Belgium.
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Oelschlaegel D, Wensch-Dorendorf M, Kopke G, Jungnickel R, Waurich B, Rosner F, Döpfer D, Brenig B, Swalve HH. Functional Variants Associated With CMPK2 and in ASB16 Influence Bovine Digital Dermatitis. Front Genet 2022; 13:859595. [PMID: 35832195 PMCID: PMC9271848 DOI: 10.3389/fgene.2022.859595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 05/03/2022] [Indexed: 11/13/2022] Open
Abstract
Bovine digital dermatitis (BDD) is an infectious disease of the hoof in cattle with multifactorial etiology and a polygenic influence on susceptibility. With our study, we identified genomic regions with the impact on occurrence and development of BDD. We used 5,040 genotyped animals with phenotype information based on the M-stage system for genome-wide association. Significant associations for single-nucleotide polymorphisms were found near genes CMPK2 (chromosome 11) and ASB16 (chromosome 19) both being implicated in immunological processes. A sequence analysis of the chromosomal regions revealed rs208894039 and rs109521151 polymorphisms as having significant influence on susceptibility to the disease. Specific genotypes were significantly more likely to be affected by BDD and developed chronic lesions. Our study provides an insight into the genomic background for a genetic predisposition related to the pathogenesis of BDD. Results might be implemented in cattle-breeding programs and could pave the way for the establishment of a BDD prescreening test.
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Affiliation(s)
- Diana Oelschlaegel
- Group Animal Breeding, Institute of Agricultural and Nutritional Sciences, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Monika Wensch-Dorendorf
- Group Animal Breeding, Institute of Agricultural and Nutritional Sciences, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Grit Kopke
- Group Animal Breeding, Institute of Agricultural and Nutritional Sciences, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Roswitha Jungnickel
- Group Animal Breeding, Institute of Agricultural and Nutritional Sciences, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Benno Waurich
- Group Animal Breeding, Institute of Agricultural and Nutritional Sciences, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Frank Rosner
- Group Animal Breeding, Institute of Agricultural and Nutritional Sciences, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Dörte Döpfer
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI, United States
| | - Bertram Brenig
- Institute of Veterinary Medicine, Georg-August-University Göttingen, Göttingen, Germany
| | - Hermann H. Swalve
- Group Animal Breeding, Institute of Agricultural and Nutritional Sciences, Martin-Luther-University Halle-Wittenberg, Halle, Germany
- *Correspondence: Hermann H. Swalve,
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Bian W, Wang Z, Li X, Jiang X, Zhang H, Liu Z, Zhang D. Identification of vital modules and genes associated with heart failure based on weighted gene coexpression network analysis. ESC Heart Fail 2022; 9:1370-1379. [PMID: 35128826 PMCID: PMC8934958 DOI: 10.1002/ehf2.13827] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 01/11/2022] [Accepted: 01/14/2022] [Indexed: 12/04/2022] Open
Abstract
Aims Heart failure (HF) is a chronic heart disease with a high incidence and mortality. Due to the regulatory complexity of gene coexpression networks, the underlying hub genes regulation in HF remain incompletely appreciated. We aimed to explore potential key modules and genes for HF using weighted gene coexpression network analysis (WGCNA). Methods and results The expression profiles by high throughput sequencing of heart tissues samples from HF and non‐HF samples were obtained from the Gene Expression Omnibus database. Differentially expressed genes (DEGs) between HF and non‐HF samples were firstly identified. Then, a coexpression network was constructed to identify key modules and potential hub genes. The biological functions of potential hub genes were analysed by Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analyses. Finally, a protein–protein interaction (PPI) network was constructed using the STRING online tool. A total of 135 DEGs (133 up‐regulated and 2 down‐regulated DEGs) between HF and non‐HF samples were identified in the GSE135055 and GSE123976 datasets. Moreover, a total of 38 modules were screened based on WGCNA in the GSE135055 dataset, and six potential hub genes (UCK2, ASB1, CCNI, CUX1, IRX6, and STX16) were screened from the key module by setting the gene significance over 0.2 and the module membership over 0.8. Furthermore, 78 potential hub genes were obtained by taking the intersection of the 135 DEGs and all genes in the key module, and enrichment analysis revealed that they were mainly involved in the MAPK and PI3K‐AKT signalling pathways. Finally, in a PPI network constructed with the 78 potential hub genes, CUX1 and ASB1 were identified as hub genes in HF because they were also identified as potential hub genes in the WGCNA. Conclusions To the best of our knowledge, our study is the first to employ WGCNA to identify the key module and hub genes for HF. Our study identified a module and two genes that might play important roles in HF, which may provide potential biomarkers for the diagnosis of HF and improve our knowledge of the molecular mechanisms underlying HF.
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Affiliation(s)
- Weikang Bian
- Department of Cardiology Nanjing First Hospital, Nanjing Medical University 68 Changle Road Nanjing 210006 China
| | - Zhicheng Wang
- Department of Cardiology Nanjing First Hospital, Nanjing Medical University 68 Changle Road Nanjing 210006 China
| | - Xiaobo Li
- Department of Cardiology Nanjing First Hospital, Nanjing Medical University 68 Changle Road Nanjing 210006 China
| | - Xiao‐Xin Jiang
- Department of Cardiology Nanjing First Hospital, Nanjing Medical University 68 Changle Road Nanjing 210006 China
| | - Hongsong Zhang
- Department of Cardiology Nanjing First Hospital, Nanjing Medical University 68 Changle Road Nanjing 210006 China
| | - Zhizhong Liu
- Department of Cardiology Nanjing First Hospital, Nanjing Medical University 68 Changle Road Nanjing 210006 China
| | - Dai‐Min Zhang
- Department of Cardiology Nanjing First Hospital, Nanjing Medical University 68 Changle Road Nanjing 210006 China
- Department of Cardiology Sir Run Run Hospital, Nanjing Medical University Nanjing China
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Nosratpour S, Ndiaye K. Ankyrin-repeat and SOCS box-containing protein 9 (ASB9) regulates ovarian granulosa cells function and MAPK signaling. Mol Reprod Dev 2021; 88:830-843. [PMID: 34476862 DOI: 10.1002/mrd.23532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 08/03/2021] [Accepted: 08/24/2021] [Indexed: 11/05/2022]
Abstract
Ankyrin-repeat and SOCS box-containing proteins (ASB) interact with the elongin B-C adapter via their SOCS box domain and with the cullin and ring box proteins to form E3 ubiquitin ligase complexes within the protein ubiquitination pathway. ASB9 in particular is a differentially expressed gene in ovulatory follicles (OFs) induced by the luteinizing hormone (LH) surge or hCG injection in ovarian granulosa cells (GC) while downregulated in growing dominant follicles. Although ASB9 has been involved in biological processes such as protein modification, the signaling network associated with ASB9 in GC is yet to be fully defined. We previously identified and reported ASB9 interactions and binding partners in GC including PAR1, TAOK1, and TNFAIP6/TSG6. Here, we further investigate ASB9 effects on target binding partners regulation and signaling in GC. CRISPR/Cas9-induced inhibition of ASB9 revealed that ASB9 regulates PAR1, TAOK1, TNFAIP6 as well as genes associated with proliferation and cell cycle progression such as PCNA, CCND2, and CCNE2 while CCNA2 was not affected. Inhibition of ASB9 was also associated with increased GC number and decreased caspase3/7 activity, CASP3 expression, and BAX/BCL2 ratio. Furthermore, ASB9 induction in OF in vivo 24 h post-hCG is concomitant with a significant decrease in phosphorylation levels of MAPK3/1 while pMAPK3/1 levels increased following ASB9 inhibition in GC in vitro. Together, these results provide strong evidence for ASB9 as a regulator of GC activity and function by modulating MAPK signaling likely through specific binding partners such as PAR1, therefore controlling GC proliferation and contributing to GC differentiation into luteal cells.
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Affiliation(s)
- Soma Nosratpour
- Centre de Recherche en Reproduction et Fertilité (CRRF), Veterinary Biomedicine, University of Montreal, Saint-Hyacinthe, Quebec, Canada
| | - Kalidou Ndiaye
- Centre de Recherche en Reproduction et Fertilité (CRRF), Veterinary Biomedicine, University of Montreal, Saint-Hyacinthe, Quebec, Canada
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Lumpkin RJ, Ahmad AS, Blake R, Condon CJ, Komives EA. The Mechanism of NEDD8 Activation of CUL5 Ubiquitin E3 Ligases. Mol Cell Proteomics 2021; 20:100019. [PMID: 33268465 PMCID: PMC7950132 DOI: 10.1074/mcp.ra120.002414] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/01/2020] [Accepted: 12/02/2020] [Indexed: 12/27/2022] Open
Abstract
Cullin RING E3 ligases (CRLs) ubiquitylate hundreds of important cellular substrates. Here we have assembled and purified the Ankyrin repeat and SOCS Box protein 9 CUL5 RBX2 ligase (ASB9-CRL) in vitro and show how it ubiquitylates one of its substrates, CKB. CRLs occasionally collaborate with RING between RING E3 ligases (RBRLs), and indeed, mass spectrometry analysis showed that CKB is specifically ubiquitylated by the ASB9-CRL-ARIH2-UBE2L3 complex. Addition of other E2s such as UBE2R1 or UBE2D2 contributes to polyubiquitylation but does not alter the sites of CKB ubiquitylation. Hydrogen–deuterium exchange mass spectrometry (HDX-MS) analysis revealed that CUL5 neddylation allosterically exposes its ARIH2 binding site, promoting high-affinity binding, and it also sequesters the NEDD8 E2 (UBE2F) binding site on RBX2. Once bound, ARIH2 helices near the Ariadne domain active site are exposed, presumably relieving its autoinhibition. These results allow us to propose a model of how neddylation activates ASB-CRLs to ubiquitylate their substrates. ARIH2 is required for ASB9CRL to polyubiquitylate 4/18 lysines on one creatine kinase subunit. HDX-MS reveals long-range allosteric opening of a cleft in CUL5 where the ARIH2 RBRL binds. HDX-MS reveals that neddylation of CUL5 alters the RBX2 conformation away from binding the E2∼NEDD8. HDX-MS reveals opening of the ARIH2 active site upon binding CUL5, thus releasing its autoinhibition.
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Affiliation(s)
- Ryan J Lumpkin
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California, USA
| | - Alla S Ahmad
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California, USA
| | - Rachel Blake
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California, USA
| | - Christopher J Condon
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California, USA
| | - Elizabeth A Komives
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California, USA.
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MicroRNA 452 regulates ASB8, NOL8, and CDR2 expression in colorectal cancer cells. Genes Genomics 2021; 43:33-41. [PMID: 33398662 DOI: 10.1007/s13258-020-01016-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 10/29/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND MicroRNAs play important roles in the pathogenesis of human diseases by regulating target gene expression in specific cells or tissues. Previously, we identified microRNA 452 (MIR452), which was specifically up-regulated in early stage human colorectal cancer (CRC) tissue. OBJECTIVE The current study aims to identify and verify the target genes of MIR452 associated with CRC. METHODS A luciferase reporter system was used to confirm the effect of MIR452 on ASB8, NOL8, and CDR2 expression. The expression levels of MIR452 and the target genes were evaluated by quantitative RT-PCR (qRT-PCR) and western blotting. RESULTS We verified the association between MIR452 and three genes, ASB8, NOL8, and CDR2, and showed that their transcripts were down-regulated by MIR452. Up-regulated MIR452 also down-regulated ASB8, NOL8, and CDR2 mRNA and protein levels in CRC cells. CDR2 protein expression was decreased in CRC tissues compared to adjacent non-tumor tissues. CONCLUSIONS These results suggest that ASB8, NOL8, and CDR2 were target genes of MIR452 in CRC cells and that up-regulated MIR452 in CRC tissue regulated ASB8, NOL8, and CDR2 expression during colorectal carcinogenesis.
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Blondelle J, Biju A, Lange S. The Role of Cullin-RING Ligases in Striated Muscle Development, Function, and Disease. Int J Mol Sci 2020; 21:E7936. [PMID: 33114658 PMCID: PMC7672578 DOI: 10.3390/ijms21217936] [Citation(s) in RCA: 7] [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: 09/24/2020] [Revised: 10/11/2020] [Accepted: 10/13/2020] [Indexed: 02/07/2023] Open
Abstract
The well-orchestrated turnover of proteins in cross-striated muscles is one of the fundamental processes required for muscle cell function and survival. Dysfunction of the intricate protein degradation machinery is often associated with development of cardiac and skeletal muscle myopathies. Most muscle proteins are degraded by the ubiquitin-proteasome system (UPS). The UPS involves a number of enzymes, including E3-ligases, which tightly control which protein substrates are marked for degradation by the proteasome. Recent data reveal that E3-ligases of the cullin family play more diverse and crucial roles in cross striated muscles than previously anticipated. This review highlights some of the findings on the multifaceted functions of cullin-RING E3-ligases, their substrate adapters, muscle protein substrates, and regulatory proteins, such as the Cop9 signalosome, for the development of cross striated muscles, and their roles in the etiology of myopathies.
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Affiliation(s)
- Jordan Blondelle
- Department of Medicine, University of California, La Jolla, CA 92093, USA
| | - Andrea Biju
- Department of Medicine, University of California, La Jolla, CA 92093, USA
| | - Stephan Lange
- Department of Medicine, University of California, La Jolla, CA 92093, USA
- Department of Molecular and Clinical Medicine, University of Gothenburg, 41345 Gothenburg, Sweden
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Fan H, Wang X, Li W, Shen M, Wei Y, Zheng H, Kang Y. ASB13 inhibits breast cancer metastasis through promoting SNAI2 degradation and relieving its transcriptional repression of YAP. Genes Dev 2020; 34:1359-1372. [PMID: 32943576 PMCID: PMC7528707 DOI: 10.1101/gad.339796.120] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 08/05/2020] [Indexed: 12/12/2022]
Abstract
In this study, Fan et al. studied the post-translational regulation of transcription factor SNAI2, which plays key roles during development and promotes metastasis by inducing invasive phenotype and tumor-initiating activity of cancer cells. They performed a dual-luciferase-based, genome-wide E3 ligase siRNA library screen and identified ASB13 as an E3 ubiquitin ligase that targets SNAI2 for ubiquitination and degradation, thereby establishing ASB13 as a suppressor of breast cancer metastasis. Transcription factor SNAI2 plays key roles during development and has also been known to promote metastasis by inducing invasive phenotype and tumor-initiating activity of cancer cells. However, the post-translational regulation of SNAI2 is less well studied. We performed a dual-luciferase-based, genome-wide E3 ligase siRNA library screen and identified ASB13 as an E3 ubiquitin ligase that targets SNAI2 for ubiquitination and degradation. ASB13 knockout in breast cancer cells promoted cell migration and decreased F-actin polymerization, while overexpression of ASB13 suppressed lung metastasis. Furthermore, ASB13 knockout decreased YAP expression, and such regulation is dependent on an increased protein level of SNAI2, which in turn represses YAP transcription. YAP suppresses tumor progression in breast cancer, as YAP knockout increases tumorsphere formation, anchorage-independent colony formation, cell migration in vitro, and lung metastasis in vivo. Clinical data analysis reveals that ASB13 expression is positively correlated with improved overall survival in breast cancer patients. These findings establish ASB13 as a suppressor of breast cancer metastasis by promoting degradation of SNAI2 and relieving its transcriptional repression of YAP.
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Affiliation(s)
- Huijuan Fan
- Department of Basic Medical Sciences, School of Medicine, Tsinghua University, Beijing 100084, China
| | - Xuxiang Wang
- Department of Basic Medical Sciences, School of Medicine, Tsinghua University, Beijing 100084, China
| | - Wenyang Li
- Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, USA
| | - Minhong Shen
- Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, USA
| | - Yong Wei
- Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, USA
| | - Hanqiu Zheng
- Department of Basic Medical Sciences, School of Medicine, Tsinghua University, Beijing 100084, China
| | - Yibin Kang
- Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, USA.,Cancer Metabolism and Growth Program, Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey 08903, USA
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12
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Jongbloed F, de Bruin RWF, Steeg HV, Beekhof P, Wackers P, Hesselink DA, Hoeijmakers JHJ, Dollé MET, IJzermans JNM. Protein and calorie restriction may improve outcomes in living kidney donors and kidney transplant recipients. Aging (Albany NY) 2020; 12:12441-12467. [PMID: 32652516 PMCID: PMC7377854 DOI: 10.18632/aging.103619] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 06/16/2020] [Indexed: 01/04/2023]
Abstract
Previously, we and others showed that dietary restriction protects against renal ischemia-reperfusion injury in animals. However, clinical translation of preoperative diets is scarce, and in the setting of kidney transplantation these data are lacking. In this pilot study, we investigated the effects of five days of a preoperative protein and caloric dietary restriction (PCR) diet in living kidney donors on the perioperative effects in donors, recipients and transplanted kidneys. Thirty-five kidney donors were randomized into either the PCR, 30% calorie and 80% protein reduction, or control group without restrictions. Adherence to the diet and kidney function in donors and their kidney recipients were analyzed. Perioperative kidney biopsies were taken in a selected group of transplanted kidneys for gene expression analysis. All donors adhered to the diet. From postoperative day 2 up until month 1, kidney function of donors was significantly better in the PCR-group. PCR-donor kidney recipients showed significantly improved kidney function and lower incidence of slow graft function and acute rejection. PCR inhibited cellular immune response pathways and activated stress-resistance signaling. These observations are the first to show that preoperative dietary restriction induces postoperative recovery benefits in humans and may be beneficial in clinical settings involving ischemia-reperfusion injury.
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Affiliation(s)
- Franny Jongbloed
- Department of Surgery, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Laboratory of Health Protection Research, National Institute of Public Health and the Environment, Bilthoven, The Netherlands
| | - Ron W F de Bruin
- Department of Surgery, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Harry Van Steeg
- Laboratory of Health Protection Research, National Institute of Public Health and the Environment, Bilthoven, The Netherlands.,Department of Toxicogenetics, Leiden University Medical Center, Leiden, The Netherlands
| | - Piet Beekhof
- Laboratory of Health Protection Research, National Institute of Public Health and the Environment, Bilthoven, The Netherlands
| | - Paul Wackers
- Laboratory of Health Protection Research, National Institute of Public Health and the Environment, Bilthoven, The Netherlands
| | - Dennis A Hesselink
- Department of Internal Medicine, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Jan H J Hoeijmakers
- Department of Genetics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Martijn E T Dollé
- Laboratory of Health Protection Research, National Institute of Public Health and the Environment, Bilthoven, The Netherlands
| | - Jan N M IJzermans
- Department of Surgery, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
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13
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Lumpkin RJ, Baker RW, Leschziner AE, Komives EA. Structure and dynamics of the ASB9 CUL-RING E3 Ligase. Nat Commun 2020; 11:2866. [PMID: 32513959 PMCID: PMC7280518 DOI: 10.1038/s41467-020-16499-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 05/01/2020] [Indexed: 01/23/2023] Open
Abstract
The Cullin 5 (CUL5) Ring E3 ligase uses adaptors Elongins B and C (ELOB/C) to bind different SOCS-box-containing substrate receptors, determining the substrate specificity of the ligase. The 18-member ankyrin and SOCS box (ASB) family is the largest substrate receptor family. Here we report cryo-EM data for the substrate, creatine kinase (CKB) bound to ASB9-ELOB/C, and for full-length CUL5 bound to the RING protein, RBX2, which binds various E2s. To date, no full structures are available either for a substrate-bound ASB nor for CUL5. Hydrogen-deuterium exchange (HDX-MS) mapped onto a full structural model of the ligase revealed long-range allostery extending from the substrate through CUL5. We propose a revised allosteric mechanism for how CUL-E3 ligases function. ASB9 and CUL5 behave as rigid rods, connected through a hinge provided by ELOB/C transmitting long-range allosteric crosstalk from the substrate through CUL5 to the RBX2 flexible linker.
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Affiliation(s)
- Ryan J Lumpkin
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA, 92092-0378, USA
| | - Richard W Baker
- Department of Cellular and Molecular Medicine, School of Medicine, University of California, San Diego, La Jolla, CA, 92093, USA
- Department of Biochemistry and Biophysics, School of Medicine, University of North Carolina, Chapel Hill, Chapel Hill, NC, USA
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, Chapel Hill, NC, USA
| | - Andres E Leschziner
- Department of Cellular and Molecular Medicine, School of Medicine, University of California, San Diego, La Jolla, CA, 92093, USA
- Section of Molecular Biology, Division of Biological Sciences, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Elizabeth A Komives
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA, 92092-0378, USA.
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14
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Zhao Y, Xiong X, Sun Y. Cullin-RING Ligase 5: Functional characterization and its role in human cancers. Semin Cancer Biol 2020; 67:61-79. [PMID: 32334051 DOI: 10.1016/j.semcancer.2020.04.003] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 04/06/2020] [Accepted: 04/12/2020] [Indexed: 12/12/2022]
Abstract
Cullin-RING ligase 5 (CRL5) is a multi-protein complex and consists of a scaffold protien cullin 5, a RING protein RBX2 (also known as ROC2 or SAG), adaptor proteins Elongin B/C, and a substrate receptor protein SOCS. Through targeting a variety of substrates for proteasomal degradation or modulating various protein-protein interactions, CRL5 is involved in regulation of many biological processes, such as cytokine signal transduction, inflammation, viral infection, and oncogenesis. As many substrates of CRL5 are well-known oncoproteins or tumor suppressors, abnormal regulation of CRL5 is commonly found in human cancers. In this review, we first briefly introduce each of CRL5 components, and then discuss the biological processes regulated by four members of SOCS-box-containing substrate receptor family through substrate degradation. We next describe how CRL5 is hijacked by a variety of viral proteins to degrade host anti-viral proteins, which facilitates virus infection. We further discuss the regulation of CUL5 and its various roles in human cancers, acting as either a tumor suppressor or an oncoprotein in a context-dependent manner. Finally, we propose novel insights for future perspectives on the validation of cullin5 and other CRL5 components as potential targets, and possible targeting strategies to discover CRL5 inhibitors for anti-cancer and anti-virus therapies.
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Affiliation(s)
- Yongchao Zhao
- Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, China.
| | - Xiufang Xiong
- Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, China; Cancer Institute of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yi Sun
- Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, China; Cancer Institute of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Division of Radiation and Cancer Biology, Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA.
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15
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Huang XF, Jian S, Lu JL, Shen KN, Feng J, Zhang CL, Tian Z, Wang JL, Lei WJ, Cao XX, Zhou DB, Liang ZY, Li J. Genomic profiling in amyloid light-chain amyloidosis reveals mutation profiles associated with overall survival. Amyloid 2020; 27:36-44. [PMID: 31635489 DOI: 10.1080/13506129.2019.1678464] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Background: Amyloid light chain (AL) amyloidosis is characterized by tissue deposition of amyloid fibres derived from immunoglobulin that can lead to irreversible organ damage. Information about genomic profiles of AL amyloidosis is lacking.Methods: In this study, we adopted a two-step strategy to investigate the mutational profile of AL amyloidosis bone marrow plasma cells (PCs) and their clinical implications. In step one, whole-exome sequencing was performed in bone marrow PCs and paired with normal tissue from 10 AL amyloidosis patients, by which we identified 10 significantly mutated genes (SMGs). In step two, we constituted a targeted gene sequencing (TGS) panel covering the frequently mutated genes identified in step one, genes reported in prior AL amyloidosis studies, and known cancer driver mutations. Then, we analysed an expanded cohort of AL amyloidosis patients (N = 48) with this panel comprising 98 genes.Results: Four recurrent mutations were identified by TGS and verified by Sanger sequencing: ASB15 (c. 844 C > T), ASCC3 (c. 1595 A > G), HIST1H1E (c. 311 C > T) and KRAS (c. 35 G > A), among which the first three mutations were associated with inferior overall survival (OS). Additionally, we found that the number of mutations identified by the TGS panel of 98 genes could be a prognostic predictor for OS.Conclusions: In summary, we revealed genomic profiling in AL amyloidosis and found mutation profiles associated with OS.
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Affiliation(s)
- Xu-Fei Huang
- Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Fujian Medical University Union Hospital, Beijing, China
| | - Sun Jian
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jun-Liang Lu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Kai-Ni Shen
- Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jun Feng
- Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Cong-Li Zhang
- Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhuang Tian
- Department of Cardiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jia-Li Wang
- The Scientific and Technical Department, Novogene Bioinformatics Institute, Beijing, China
| | - Wan-Jun Lei
- The Scientific and Technical Department, Novogene Bioinformatics Institute, Beijing, China
| | - Xin-Xin Cao
- Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Dao-Bin Zhou
- Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhi-Yong Liang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jian Li
- Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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16
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Zhang S, Sun Y. Cullin RING Ligase 5 (CRL-5): Neddylation Activation and Biological Functions. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1217:261-283. [DOI: 10.1007/978-981-15-1025-0_16] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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17
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Chen FY, Huang MY, Lin YM, Ho CH, Lin SY, Chen HY, Hung MC, Chen RH. BIK ubiquitination by the E3 ligase Cul5-ASB11 determines cell fate during cellular stress. J Cell Biol 2019; 218:3002-3018. [PMID: 31387940 PMCID: PMC6719446 DOI: 10.1083/jcb.201901156] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 06/04/2019] [Accepted: 07/01/2019] [Indexed: 12/16/2022] Open
Abstract
The BH3-only pro-apoptotic protein BIK is regulated by the ubiquitin-proteasome system. However, the mechanism of this regulation and its physiological functions remain elusive. Here, we identify Cul5-ASB11 as the E3 ligase targeting BIK for ubiquitination and degradation. ER stress leads to the activation of ASB11 by XBP1s during the adaptive phase of the unfolded protein response, which stimulates BIK ubiquitination, interaction with p97/VCP, and proteolysis. This mechanism of BIK degradation contributes to ER stress adaptation by promoting cell survival. Conversely, genotoxic agents down-regulate this IRE1α-XBP1s-ASB11 axis and stabilize BIK, which contributes in part to the apoptotic response to DNA damage. We show that blockade of this BIK degradation pathway by an IRE1α inhibitor can stabilize a BIK active mutant and increase its anti-tumor activity. Our study reveals that different cellular stresses regulate BIK ubiquitination by ASB11 in opposing directions, which determines whether or not cells survive, and that blocking BIK degradation has the potential to be used as an anti-cancer strategy.
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Affiliation(s)
- Fei-Yun Chen
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan.,Institute of Biochemical Sciences, College of Life Science, National Taiwan University, Taipei, Taiwan
| | - Min-Yu Huang
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan.,Institute of Biochemical Sciences, College of Life Science, National Taiwan University, Taipei, Taiwan
| | - Yu-Min Lin
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan.,Institute of Biochemical Sciences, College of Life Science, National Taiwan University, Taipei, Taiwan
| | - Chi-Huan Ho
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan.,Institute of Biochemical Sciences, College of Life Science, National Taiwan University, Taipei, Taiwan
| | - Shu-Yu Lin
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
| | - Hsin-Yi Chen
- Graduate Institute of Cancer Molecular Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Mien-Chie Hung
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX.,Department of Biotechnology, Asia University, Taichung, Taiwan.,Center for Molecular Medicine and Graduate Institute of Cancer Biology, China Medical University, Taichung, Taiwan
| | - Ruey-Hwa Chen
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan .,Institute of Biochemical Sciences, College of Life Science, National Taiwan University, Taipei, Taiwan
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18
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Graham JB, Canniff NP, Hebert DN. TPR-containing proteins control protein organization and homeostasis for the endoplasmic reticulum. Crit Rev Biochem Mol Biol 2019; 54:103-118. [PMID: 31023093 DOI: 10.1080/10409238.2019.1590305] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The endoplasmic reticulum (ER) is a complex, multifunctional organelle comprised of a continuous membrane and lumen that is organized into a number of functional regions. It plays various roles including protein translocation, folding, quality control, secretion, calcium signaling, and lipid biogenesis. Cellular protein homeostasis is maintained by a complicated chaperone network, and the largest functional family within this network consists of proteins containing tetratricopeptide repeats (TPRs). TPRs are well-studied structural motifs that mediate intermolecular protein-protein interactions, supporting interactions with a wide range of ligands or substrates. Seven TPR-containing proteins have thus far been shown to localize to the ER and control protein organization and homeostasis within this multifunctional organelle. Here, we discuss the roles of these proteins in controlling ER processes and organization. The crucial roles that TPR-containing proteins play in the ER are highlighted by diseases or defects associated with their mutation or disruption.
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Affiliation(s)
- Jill B Graham
- a Molecular Cellular Biology Program , University of Massachusetts , Amherst , MA , USA.,b Biochemistry and Molecular Biology Department , University of Massachusetts , Amherst , MA , USA
| | - Nathan P Canniff
- a Molecular Cellular Biology Program , University of Massachusetts , Amherst , MA , USA.,b Biochemistry and Molecular Biology Department , University of Massachusetts , Amherst , MA , USA
| | - Daniel N Hebert
- a Molecular Cellular Biology Program , University of Massachusetts , Amherst , MA , USA.,b Biochemistry and Molecular Biology Department , University of Massachusetts , Amherst , MA , USA
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19
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Ball KA, Chan LM, Stanley DJ, Tierney E, Thapa S, Ta HM, Burton L, Binning JM, Jacobson MP, Gross JD. Conformational Dynamics of the HIV-Vif Protein Complex. Biophys J 2019; 116:1432-1445. [PMID: 30961890 PMCID: PMC6486493 DOI: 10.1016/j.bpj.2019.03.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 02/27/2019] [Accepted: 03/02/2019] [Indexed: 12/29/2022] Open
Abstract
Human immunodeficiency virus-1 viral infectivity factor (Vif) is an intrinsically disordered protein responsible for the ubiquitination of the APOBEC3 (A3) antiviral proteins. Vif folds when it binds Cullin-RING E3 ligase 5 and the transcription cofactor CBF-β. A five-protein complex containing the substrate receptor (Vif, CBF-β, Elongin-B, Elongin-C (VCBC)) and Cullin5 (CUL5) has a published crystal structure, but dynamics of this VCBC-CUL5 complex have not been characterized. Here, we use molecular dynamics (MD) simulations and NMR to characterize the dynamics of the VCBC complex with and without CUL5 and an A3 protein bound. Our simulations show that the VCBC complex undergoes global dynamics involving twisting and clamshell opening of the complex, whereas VCBC-CUL5 maintains a more static conformation, similar to the crystal structure. This observation from MD is supported by methyl-transverse relaxation-optimized spectroscopy NMR data, which indicates that the VCBC complex without CUL5 is dynamic on the μs-ms timescale. Our NMR data also show that the VCBC complex is more conformationally restricted when bound to the antiviral APOBEC3F (one of the A3 proteins), consistent with our MD simulations. Vif contains a flexible linker region located at the hinge of the VCBC complex, which changes conformation in conjunction with the global dynamics of the complex. Like other substrate receptors, VCBC can exist alone or in complex with CUL5 and other proteins in cells. Accordingly, the VCBC complex could be a good target for therapeutics that would inhibit full assembly of the ubiquitination complex by stabilizing an alternate VCBC conformation.
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Affiliation(s)
- K Aurelia Ball
- Department of Chemistry, Skidmore College, Saratoga Springs, New York.
| | - Lieza M Chan
- Department of Chemistry, Skidmore College, Saratoga Springs, New York
| | - David J Stanley
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, California
| | - Elise Tierney
- Department of Chemistry, Skidmore College, Saratoga Springs, New York
| | - Sampriti Thapa
- Department of Chemistry, Skidmore College, Saratoga Springs, New York
| | - Hai M Ta
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, California
| | - Lily Burton
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, California
| | - Jennifer M Binning
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, California
| | - Matthew P Jacobson
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, California
| | - John D Gross
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, California.
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20
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Hung KF, Liao PC, Chen CK, Chiu YT, Cheng DH, Kawasumi M, Kao SY, Lo JF. ASB6 Promotes the Stemness Properties and Sustains Metastatic Potential of Oral Squamous Cell Carcinoma Cells by Attenuating ER Stress. Int J Biol Sci 2019; 15:1080-1090. [PMID: 31182927 PMCID: PMC6535794 DOI: 10.7150/ijbs.31484] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 02/09/2019] [Indexed: 12/25/2022] Open
Abstract
Up-regulation of ASB6 has been previously associated with late-stage and poor prognosis of oral squamous cell carcinoma (OSCC) patients. To explore the cellular and molecular basis of how ASB6 enhances the malignancy of OSCC, we employed the clonogenicity and migration assays, murine pulmonary metastasis model, Western blot, and immunofluorescence microscopy to characterize the phenotypes of OSCC cells with lentiviral-based stable overexpression or knockdown of ASB6. We found that ASB6 overexpression increases, whereas ASB6 knockdown decreases, the potential of tumor-sphere formation, colony formation, and expression of Oct-4 and Nanog. While knockdown of ASB6 decreases cell migration in vitro and lung metastasis in mice, the migratory potential was however not promoted by ASB6 overexpression. ASB6 knockdown down-regulates the level of vimentin, and the loss of filopodia formation became more prominent following CRISPR/Cas9-directed knockout of ASB6. Moreover, ASB6 was up-regulated when cells were grown in selective condition featured with a collateral effect of enhancing intracellular stress, and the level of endoplasmic reticulum (ER) stress was further increased by knockdown of ASB6. Thus, ASB6 may attenuate ER stress that would otherwise accumulate and subsequently impede the potential of cells to acquire or sustain the stemness properties and metastatic capacity, thereby enhancing the malignancy of OSCC by increasing the population of cancer stem or stem-like cells.
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Affiliation(s)
- Kai-Feng Hung
- Department of Medical Research, Division of Translational Research, Taipei Veterans General Hospital, Taipei, Taiwan.,Department of Dentistry, School of Dentistry, National Yang-Ming University, Taipei, Taiwan.,Department of Stomatology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Po-Chen Liao
- Institute of Oral Biology, National Yang-Ming University, Taipei, Taiwan
| | - Chih-Kai Chen
- Institute of Oral Biology, National Yang-Ming University, Taipei, Taiwan
| | - Yueh-Ting Chiu
- Institute of Oral Biology, National Yang-Ming University, Taipei, Taiwan
| | - Dong-Hui Cheng
- Department of Stomatology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Masaoki Kawasumi
- Division of Dermatology, Department of Medicine, University of Washington, Seattle, Washington 98109, USA
| | - Shou-Yen Kao
- Department of Dentistry, School of Dentistry, National Yang-Ming University, Taipei, Taiwan.,Department of Stomatology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Jeng-Fan Lo
- Department of Dentistry, School of Dentistry, National Yang-Ming University, Taipei, Taiwan.,Institute of Oral Biology, National Yang-Ming University, Taipei, Taiwan.,Graduate Institute of Chinese Medical Science and Institute of Medical Science, China Medical University, Taichung, Taiwan.,Genome Research Center, National Yang-Ming University, Taipei, Taiwan.,Cancer Progression Center of Excellence, National Yang-Ming University, Taipei, Taiwan
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21
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Targeting SOCS Proteins to Control JAK-STAT Signalling in Disease. Trends Pharmacol Sci 2019; 40:298-308. [PMID: 30948191 DOI: 10.1016/j.tips.2019.03.001] [Citation(s) in RCA: 91] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Revised: 03/03/2019] [Accepted: 03/06/2019] [Indexed: 12/18/2022]
Abstract
Defective regulation of the Janus kinase-signal transducer and activator of transcription (JAK-STAT) signalling pathway in cancers, haematological diseases, and chronic inflammatory conditions highlights its clinical significance. While several biologic and small molecule therapeutics targeting this pathway have been developed, these have several limitations. Therefore, there is a need to identify new targets for intervention. Suppressor of cytokine signalling (SOCS) proteins are a family of inducible inhibitors of cytokine receptors that activate the JAK-STAT pathway. Here we propose that newly identified mechanisms controlling SOCS function could be exploited to develop molecularly targeted drugs with unique modes of action to inhibit JAK-STAT signalling in disease.
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22
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Gonadotropin regulation of ankyrin-repeat and SOCS-box protein 9 (ASB9) in ovarian follicles and identification of binding partners. PLoS One 2019; 14:e0212571. [PMID: 30811458 PMCID: PMC6392328 DOI: 10.1371/journal.pone.0212571] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Accepted: 02/05/2019] [Indexed: 11/23/2022] Open
Abstract
Ankyrin-repeat and SOCS-box protein 9 (ASB9) is a member of the large SOCS-box containing proteins family and acts as the specific substrate recognition component of E3 ubiquitin ligases in the process of ubiquitination and proteasomal degradation. We previously identified ASB9 as a differentially expressed gene in granulosa cells (GC) of bovine ovulatory follicles. This study aimed to further investigate ASB9 mRNA and protein regulation, identify binding partners in GC of bovine ovulatory follicles, and study its function. GC were obtained from small follicles (SF: 2–4 mm), dominant follicles at day 5 of the estrous cycle (DF), and ovulatory follicles, 24 hours following hCG injection (OF). Analyses by RT-PCR showed a 104-fold greater expression of ASB9 in GC of OF than in DF. Steady-state levels of ASB9 in follicular walls (granulosa and theca cells) analyzed at 0, 6, 12, 18 and 24 hours after hCG injection showed a significant induction of ASB9 expression at 12 and 18 hours, reaching a maximum induction of 10.2-fold at 24 hours post-hCG as compared to 0 hour. These results were confirmed in western blot analysis showing strongest ASB9 protein amounts in OF. Yeast two-hybrid screening of OF-cDNAs library resulted in the identification of 10 potential ASB9 binding partners in GC but no interaction was found between ASB9 and creatine kinase B (CKB) in these GC. Functional studies using CRISPR-Cas9 approach revealed that ASB9 inhibition led to increased GC proliferation and modulation of target genes expression. Overall, these results support a physiologically relevant role of ASB9 in the ovulatory follicle by targeting specific proteins likely for degradation, contributing to reduced GC proliferation, and could be involved in the final GC differentiation into luteal cells.
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23
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Liu P, Verhaar AP, Peppelenbosch MP. Signaling Size: Ankyrin and SOCS Box-Containing ASB E3 Ligases in Action. Trends Biochem Sci 2018; 44:64-74. [PMID: 30446376 DOI: 10.1016/j.tibs.2018.10.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 10/09/2018] [Accepted: 10/15/2018] [Indexed: 12/14/2022]
Abstract
Ankyrin repeat and suppressor of cytokine signaling (SOCS) box (Asb) proteins are ubiquitin E3 ligases. The subfamily of six-ankyrin repeat domain-containing Asb proteins (Asb5, Asb9, Asb11, and Asb13) is of specific interest because they display unusual strong evolutionary conservation (e.g., urochordate and human ASB11 are >49% similar at the amino acid level) and mediate compartment size expansion, regulating, for instance, the size of the brain and muscle compartment. Thus, they may be involved in the explanation of the differences in brain size between humans and apes. Mechanistically, many questions remain, but it has become clear that regulation of canonical Notch signaling and also mitochondrial function are important effectors. Here, we review the action and function of six ankyrin repeat domain-containing Asb proteins in physiology and pathophysiology.
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Affiliation(s)
- Pengyu Liu
- Department of Gastroenterology and Hepatology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Auke P Verhaar
- Department of Gastroenterology and Hepatology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Maikel P Peppelenbosch
- Department of Gastroenterology and Hepatology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands.
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Wang C, Yang H, Gao C. Potential biomarkers for heart failure. J Cell Physiol 2018; 234:9467-9474. [PMID: 30370655 DOI: 10.1002/jcp.27632] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Accepted: 09/27/2018] [Indexed: 12/13/2022]
Abstract
In this study, we identified candidate biomarkers for heart failure (HF). The gene expression profile GSE57338, containing 117 ischemic cardiomyopathic HF and 136 control samples, was downloaded and analyzed using various bioinformatics approaches. In total, 376 differentially expressed genes (DEGs) were identified, and four modules were explored in protein-protein interaction networks. DEGs (including ankyrin repeat and SOCS box-containing 14 [ASB14]) in the modules were mainly categorized by the function. Several relationships including interferon regulatory factor 1 (IRF1)-C-C motif chemokine ligand 5 (CCL5) were revealed in the transcription factor microRNA target gene regulatory network. Gene-drug analysis revealed 11 DEGs (such as the cluster of differentiation 163 [CD163]) for the target drugs. Data verification analysis identified 118 overlapping DEGs including ASB14, CD163, and CCL5. ASB14 may be involved in HF progression via protein ubiquitination and CCL5 may be involved in HF via the IRF1-CCL5 interaction. Genes including CD163 are potential biomarkers for HF.
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Affiliation(s)
- Che Wang
- Department of Cardiology, Henan Provincial People's Hospital, Fuwai Central China Cardiovascular Hospital, People's Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Honghui Yang
- Department of Cardiology, Henan Provincial People's Hospital, Fuwai Central China Cardiovascular Hospital, People's Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Chuanyu Gao
- Department of Cardiology, Henan Provincial People's Hospital, Fuwai Central China Cardiovascular Hospital, People's Hospital of Zhengzhou University, Zhengzhou, Henan, China
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PRMT1 Deficiency in Mouse Juvenile Heart Induces Dilated Cardiomyopathy and Reveals Cryptic Alternative Splicing Products. iScience 2018; 8:200-213. [PMID: 30321814 PMCID: PMC6197527 DOI: 10.1016/j.isci.2018.09.023] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 09/25/2018] [Accepted: 09/26/2018] [Indexed: 12/11/2022] Open
Abstract
Protein arginine methyltransferase 1 (PRMT1) catalyzes the asymmetric dimethylation of arginine residues in proteins and methylation of various RNA-binding proteins and is associated with alternative splicing in vitro. Although PRMT1 has essential in vivo roles in embryonic development, CNS development, and skeletal muscle regeneration, the functional importance of PRMT1 in the heart remains to be elucidated. Here, we report that juvenile cardiomyocyte-specific PRMT1-deficient mice develop severe dilated cardiomyopathy and exhibit aberrant cardiac alternative splicing. Furthermore, we identified previously undefined cardiac alternative splicing isoforms of four genes (Asb2, Fbxo40, Nrap, and Eif4a2) in PRMT1-cKO mice and revealed that eIF4A2 protein isoforms translated from alternatively spliced mRNA were differentially ubiquitinated and degraded by the ubiquitin-proteasome system. These findings highlight the essential roles of PRMT1 in cardiac homeostasis and alternative splicing regulation. PRMT1 deficiency in cardiomyocytes causes dilated cardiomyopathy in juvenile mice PRMT1-deficient heart shows abnormal alternative splicing patterns Previously undefined cardiac splicing events are revealed by transcriptome analysis eIF4A2 isoforms are differentially ubiquitinated and degraded
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ANKRD9 is associated with tumor suppression as a substrate receptor subunit of ubiquitin ligase. Biochim Biophys Acta Mol Basis Dis 2018; 1864:3145-3153. [PMID: 30293565 DOI: 10.1016/j.bbadis.2018.07.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 05/17/2018] [Accepted: 07/02/2018] [Indexed: 11/24/2022]
Abstract
BACKGROUND Human ANKRD9 (ankyrin repeat domain 9) expression is altered in some cancers. METHODS We tested genetic association of ANKRD9 with gastric cancer susceptibility and examined functional association of ANKRD9 with altered proliferation of MKN45 gastric cancer cells. We then identified ANKRD9-binding partners in HEK 293 embryonic kidney cells using quantitative proteomics, western blotting and complex reconstitution assays. We finally demonstrated ANKRD9's role of recognizing substrates for ubiquitination using in vitro ubiquitylation assay. RESULTS ANKRD9 is associated with cancer susceptibility in a comparison of single-nucleotide polymorphisms between 1092 gastric cancer patients and 1206 healthy controls. ANKRD9 depletion accelerates tumor progression by increasing cellular proliferation, piling up, and anchorage-independent growth of MKN45 cells. We discovered that ANKRD9 is a ubiquitin ligase substrate receptor subunit and has an anti-proliferative activity. ANKRD9 associates with CUL5 (not CUL2), ELOB, ELOC, and presumably RNF7 subunits, which together assemble into a cullin-RING superfamily E3 ligase complex. ANKRD9 belongs to the ASB family of proteins, which are characterized by the presence of ankyrin repeats and a SOCS box. In addition to its interactions with the other E3 ligase subunits, ANKRD9 interacts with two isoforms of inosine monophosphate dehydrogenase (IMPDH). These IMPDH isoforms are cognate substrates of the ANKRD9-containing E3 enzyme, which ubiquitinates them for proteasomal degradation. Their ubiquitination and turnover require the presence of ANKRD9. CONCLUSION ANKRD9, a previously unidentified E3 substrate receptor subunit, functions in tumor suppression by recognizing the oncoprotein IMPDH isoforms for E3 ubiquitination and proteasomal degradation.
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Identification of ASB7 as ER stress responsive gene through a genome wide in silico screening for genes with ERSE. PLoS One 2018; 13:e0194310. [PMID: 29630609 PMCID: PMC5890977 DOI: 10.1371/journal.pone.0194310] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 02/28/2018] [Indexed: 01/10/2023] Open
Abstract
The endoplasmic reticulum (ER) not only performs its basic function of regulating calcium homeostasis, lipid biosynthesis, folding, modifying and transporting proteins but also plays a decisive role in regulating multiple cellular processes ranging from cell growth and differentiation to apoptosis and autophagy. Disturbances in ER homeostasis initiate the unfolded protein response (UPR) implicated in the pathogenesis of many human diseases. Drugging the UPR components for therapeutic interventions has received considerable attention. The purpose of this study is to identify genes that are previously unsuspected to be regulated under ER stress. Because ER stress-inducible gene expression is majorly regulated under ERSE elements, we screened human genome by adopting an in silico approach using ERSE elements (I, II, III) as probes and identified 337 candidate genes. Having knowledge of the importance of E3 ubiquitin ligase in the ERAD machinery; we validated our preliminary search by focusing on one of the hits i.e. ASB7 gene that encodes E3 ubiquitin ligase. In HeLa cells, we found that pharmacological induction of ER stress led to an increase in the expression of ASB7 with simultaneous activation of UPR pathways. Although knockdown of ASB7 expression leads to significant reduction in GRP78 and CHOP mRNA levels, it did not protect cells from ER stress-induced cell death. Also, an up-regulation in the expression of pro-inflammatory genes like TNF-α and IL-1β in ASB7 knockdown cells was observed under ER stress. Collectively, our findings suggest that ASB7 is regulated under ER stress and this study also identifies several other genes that could apparently be regulated under ER stress.
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Emeny RT, Baumert J, Zannas AS, Kunze S, Wahl S, Iurato S, Arloth J, Erhardt A, Balsevich G, Schmidt MV, Weber P, Kretschmer A, Pfeiffer L, Kruse J, Strauch K, Roden M, Herder C, Koenig W, Gieger C, Waldenberger M, Peters A, Binder EB, Ladwig KH. Anxiety Associated Increased CpG Methylation in the Promoter of Asb1: A Translational Approach Evidenced by Epidemiological and Clinical Studies and a Murine Model. Neuropsychopharmacology 2018; 43:342-353. [PMID: 28540928 PMCID: PMC5729551 DOI: 10.1038/npp.2017.102] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 04/04/2017] [Accepted: 05/03/2017] [Indexed: 12/16/2022]
Abstract
Epigenetic regulation in anxiety is suggested, but evidence from large studies is needed. We conducted an epigenome-wide association study (EWAS) on anxiety in a population-based cohort and validated our finding in a clinical cohort as well as a murine model. In the KORA cohort, participants (n=1522, age 32-72 years) were administered the Generalized Anxiety Disorder (GAD-7) instrument, whole blood DNA methylation was measured (Illumina 450K BeadChip), and circulating levels of hs-CRP and IL-18 were assessed in the association between anxiety and methylation. DNA methylation was measured using the same instrument in a study of patients with anxiety disorders recruited at the Max Planck Institute of Psychiatry (MPIP, 131 non-medicated cases and 169 controls). To expand our mechanistic understanding, these findings were reverse translated in a mouse model of acute social defeat stress. In the KORA study, participants were classified according to mild, moderate, or severe levels of anxiety (29.4%/6.0%/1.5%, respectively). Severe anxiety was associated with 48.5% increased methylation at a single CpG site (cg12701571) located in the promoter of the gene encoding Asb1 (β-coefficient=0.56 standard error (SE)=0.10, p (Bonferroni)=0.005), a protein hypothetically involved in regulation of cytokine signaling. An interaction between IL-18 and severe anxiety with methylation of this CpG cite showed a tendency towards significance in the total population (p=0.083) and a significant interaction among women (p=0.014). Methylation of the same CpG was positively associated with Panic and Agoraphobia scale (PAS) scores (β=0.005, SE=0.002, p=0.021, n=131) among cases in the MPIP study. In a murine model of acute social defeat stress, Asb1 gene expression was significantly upregulated in a tissue-specific manner (p=0.006), which correlated with upregulation of the neuroimmunomodulating cytokine interleukin 1 beta. Our findings suggest epigenetic regulation of the stress-responsive Asb1 gene in anxiety-related phenotypes. Further studies are necessary to elucidate the causal direction of this association and the potential role of Asb1-mediated immune dysregulation in anxiety disorders.
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Affiliation(s)
- Rebecca T Emeny
- Institute of Epidemiology II, Helmholtz Zentrum München—German Research Centre for Environmental Health, Neuherberg, Germany,The Dartmouth Institute for Health Policy and Clinical Practice, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Jens Baumert
- Institute of Epidemiology II, Helmholtz Zentrum München—German Research Centre for Environmental Health, Neuherberg, Germany
| | - Anthony S Zannas
- Department of Translational Research in Psychiatry, Max Planck Institute of Psychiatry, Munich, Germany,Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC, USA
| | - Sonja Kunze
- Research Unit of Molecular Epidemiology and Institute of Epidemiology II, Helmholtz Zentrum München, Neuherberg, Germany
| | - Simone Wahl
- Research Unit of Molecular Epidemiology and Institute of Epidemiology II, Helmholtz Zentrum München, Neuherberg, Germany
| | - Stella Iurato
- Department of Translational Research in Psychiatry, Max Planck Institute of Psychiatry, Munich, Germany
| | - Janine Arloth
- Department of Translational Research in Psychiatry, Max Planck Institute of Psychiatry, Munich, Germany,Institute of Computational Biology, Helmholtz Zentrum München-German Research Center for Environmental Health, Neuherberg, Germany
| | - Angelika Erhardt
- Department of Translational Research in Psychiatry, Max Planck Institute of Psychiatry, Munich, Germany
| | - Georgia Balsevich
- Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
| | - Mathias V Schmidt
- Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
| | - Peter Weber
- Department of Translational Research in Psychiatry, Max Planck Institute of Psychiatry, Munich, Germany
| | - Anja Kretschmer
- Research Unit of Molecular Epidemiology and Institute of Epidemiology II, Helmholtz Zentrum München, Neuherberg, Germany
| | - Liliane Pfeiffer
- Research Unit of Molecular Epidemiology and Institute of Epidemiology II, Helmholtz Zentrum München, Neuherberg, Germany
| | - Johannes Kruse
- Department of Psychosomatic Medicine and Psychotherapy Justus-Liebig-Universität Gießen, Gießen, Hesse, Germany
| | - Konstantin Strauch
- Institute of Genetic Epidemiology, Helmholtz Zentrum München—German Research Center for Environmental Health, Neuherberg, Germany,Institute of Medical Informatics, Biometry and Epidemiology, Chair of Genetic Epidemiology, Ludwig-Maximilians-Universität, Munich, Germany
| | - Michael Roden
- Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Düsseldorf, Germany,German Center for Diabetes Research (DZD), München-Neuherberg, Germany,Department of Endocrinology and Diabetology, Medical Faculty, University Hospital Düsseldorf, Düsseldorf, Germany
| | - Christian Herder
- Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Düsseldorf, Germany,German Center for Diabetes Research (DZD), München-Neuherberg, Germany
| | - Wolfgang Koenig
- Department of Internal Medicine II-Cardiology, University of Ulm Medical Center, Ulm, Germany
| | - Christian Gieger
- Research Unit of Molecular Epidemiology and Institute of Epidemiology II, Helmholtz Zentrum München, Neuherberg, Germany
| | - Melanie Waldenberger
- Research Unit of Molecular Epidemiology and Institute of Epidemiology II, Helmholtz Zentrum München, Neuherberg, Germany
| | - Annette Peters
- Institute of Epidemiology II, Helmholtz Zentrum München—German Research Centre for Environmental Health, Neuherberg, Germany
| | - Elisabeth B Binder
- Department of Translational Research in Psychiatry, Max Planck Institute of Psychiatry, Munich, Germany,Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, GA, USA,Department of Translational Research in Psychiatry, Max Planck Institute of Psychiatry, Kraepelinstr. 2-10, Munich 80804, Germany, Tel: +49 89 30622586, Fax: +49 89 30622471 E-mail:
| | - Karl-Heinz Ladwig
- Institute of Epidemiology II, Helmholtz Zentrum München—German Research Centre for Environmental Health, Neuherberg, Germany,Klinik und Poliklinik für Psychosomatische Medizin und Psychotherapie des Klinikums Rechts der Isar der TUM, Munich, Germany,Institute of Epidemiology II, Mental Health Research Unit Helmholtz Zentrum München German Research Center for Environmental Health (GmbH) Ingolstädter Landstr. 1, Neuherberg 85764, Germany, Tel: +49 89 31873623, Fax: +49 89 31873364E-mail:
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Liljedahl L, Norlin J, McGuire JN, James P. Effects of insulin and the glucagon-like peptide 1 receptor agonist liraglutide on the kidney proteome in db/db mice. Physiol Rep 2017; 5:5/6/e13187. [PMID: 28330952 PMCID: PMC5371560 DOI: 10.14814/phy2.13187] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 02/09/2017] [Indexed: 01/04/2023] Open
Abstract
Diabetes mellitus (DM) is a worldwide disease that affects 9% of the adult world population and type 2 DM accounts for 90% of those. A common consequence of DM is kidney complications, which could lead to kidney failure. We studied the potential effects of treatment with insulin and the glucagon-like peptide 1 receptor (GLP-1R) agonist liraglutide on the diabetic kidney proteome through the use of the db/db mouse model system and mass spectrometry (MS). Multivariate analyses revealed distinct effects of insulin and liraglutide on the db/db kidney proteome, which was seen on the protein levels of, for example, pterin-4 α-carbinolamine dehydratase/dimerization cofactor of hepatocyte nuclear factor-1α (PCBD1), neural precursor cell expressed developmentally down-regulated-8 (NEDD8), transcription elongation factor-B polypeptide-1 (ELOC) and hepcidin (HEPC). Furthermore, the separation of the insulin, liraglutide and vehicle db/db mouse groups in multivariate analyses was not mainly related to the albumin excretion rate (AER) or the level of glycated hemoglobin A1c (HbA1c%) in the mice. In summary, we show that insulin and liraglutide give rise to separate protein profiles in the db/db mouse kidney.
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Affiliation(s)
- Leena Liljedahl
- Department of Immunotechnology, Lund University, Lund, Sweden
| | | | | | - Peter James
- Department of Immunotechnology, Lund University, Lund, Sweden
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Henriques A, Huebecker M, Blasco H, Keime C, Andres CR, Corcia P, Priestman DA, Platt FM, Spedding M, Loeffler JP. Inhibition of β-Glucocerebrosidase Activity Preserves Motor Unit Integrity in a Mouse Model of Amyotrophic Lateral Sclerosis. Sci Rep 2017; 7:5235. [PMID: 28701774 PMCID: PMC5507914 DOI: 10.1038/s41598-017-05313-0] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 05/26/2017] [Indexed: 12/11/2022] Open
Abstract
Recent metabolomic reports connect dysregulation of glycosphingolipids, particularly ceramide and glucosylceramide, to neurodegeneration and to motor unit dismantling in amyotrophic lateral sclerosis at late disease stage. We report here altered levels of gangliosides in the cerebrospinal fluid of amyotrophic lateral sclerosis patients in early disease stage. Conduritol B epoxide is an inhibitor of acid beta-glucosidase, and lowers glucosylceramide degradation. Glucosylceramide is the precursor for all of the more complex glycosphingolipids. In SOD1G86R mice, an animal model of amyotrophic lateral sclerosis, conduritol B epoxide preserved ganglioside distribution at the neuromuscular junction, delayed disease onset, improved motor function and preserved motor neurons as well as neuromuscular junctions from degeneration. Conduritol B epoxide mitigated gene dysregulation in the spinal cord and restored the expression of genes involved in signal transduction and axonal elongation. Inhibition of acid beta-glucosidase promoted faster axonal elongation in an in vitro model of neuromuscular junctions and hastened recovery after peripheral nerve injury in wild type mice. Here, we provide evidence that glycosphingolipids play an important role in muscle innervation, which degenerates in amyotrophic lateral sclerosis from the early disease stage. This is a first proof of concept study showing that modulating the catabolism of glucosylceramide may be a therapeutic target for this devastating disease.
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Affiliation(s)
- Alexandre Henriques
- Université de Strasbourg, UMR_S 1118, Fédération de Médecine Translationnelle, Strasbourg, France
- INSERM, U1118, Mécanismes Centraux et Périphériques de la Neurodégénérescence, Strasbourg, France
- Spedding Research Solutions SAS, Le Vesinet, France
| | | | - Hélène Blasco
- INSERM, Université François-Rabelais, U930, Neurogénétique et Neurométabolomique, Tours, France
- CHRU de Tours, Laboratoire de Biochimie et de Biologie Moléculaire, Tours, France
| | - Céline Keime
- IGBMC (Institut de Génétique et de Biologie Moléculaire et Cellulaire), INSERM, U964, CNRS, UMR7104, Université de Strasbourg, 67404, Illkirch, France
| | - Christian R Andres
- INSERM, Université François-Rabelais, U930, Neurogénétique et Neurométabolomique, Tours, France
- CHRU de Tours, Laboratoire de Biochimie et de Biologie Moléculaire, Tours, France
| | - Philippe Corcia
- INSERM, Université François-Rabelais, U930, Neurogénétique et Neurométabolomique, Tours, France
- CHRU de Tours, Centre SLA, Tours, France
| | | | - Frances M Platt
- Department of Pharmacology, University of Oxford, Oxford, UK
| | | | - Jean-Philippe Loeffler
- Université de Strasbourg, UMR_S 1118, Fédération de Médecine Translationnelle, Strasbourg, France.
- INSERM, U1118, Mécanismes Centraux et Périphériques de la Neurodégénérescence, Strasbourg, France.
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The loss-of-function mutations and down-regulated expression of ASB3 gene promote the growth and metastasis of colorectal cancer cells. CHINESE JOURNAL OF CANCER 2017; 36:11. [PMID: 28088228 PMCID: PMC5237493 DOI: 10.1186/s40880-017-0180-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Accepted: 12/30/2016] [Indexed: 02/06/2023]
Abstract
Background Ankyrin repeat and SOCS box protein 3 (ASB3) is a member of ASB family and contains ankyrin repeat sequence and SOCS box domain. Previous studies indicated that it mediates the ubiquitination and degradation of tumor necrosis factor receptor 2 and is likely involved in inflammatory responses. However, its effects on oncogenesis are unclear. This study aimed to investigate the effects of ASB3 on the growth and metastasis of colorectal cancer (CRC). Methods We used next-generation sequencing or Sanger sequencing to detect ASB3 mutations in CRC specimens or cell lines, and used real-time quantitative polymerase chain reaction, Western blotting, and immunohistochemical or immunofluorescence assay to determine gene expression. We evaluated cell proliferation by MTT and colony formation assays, tested cell cycle distribution by flow cytometry, and assessed cell migration and invasion by transwell and wound healing assays. We also performed nude mouse experiments to evaluate tumorigenicity and hepatic metastasis potential of tumor cells. Results We found that ASB3 gene was frequently mutated (5.3%) and down-regulated (70.4%) in CRC cases. Knockdown of endogenous ASB3 expression promoted CRC cell proliferation, migration, and invasion in vitro and facilitated tumorigenicity and hepatic metastasis in vivo. Conversely, the ectopic overexpression of wild-type ASB3, but not that of ASB3 mutants that occurred in clinical CRC tissues, inhibited tumor growth and metastasis. Further analysis showed that ASB3 inhibited CRC metastasis likely by retarding epithelial-mesenchymal transition, which was characterized by the up-regulation of β-catenin and E-cadherin and the down-regulation of transcription factor 8, N-cadherin, and vimentin. Conclusion ASB3 dysfunction resulted from gene mutations or down-regulated expression frequently exists in CRC and likely plays a key role in the pathogenesis and progression of CRC.
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Wang YC, Li ZJ, Han RL, Xu CL, Wang SH, Sun GR, Wang SH, Wu JP, Kang XT. Promoter analysis and tissue expression of the chicken ASB15 gene. Br Poult Sci 2016; 58:26-31. [PMID: 27844487 DOI: 10.1080/00071668.2016.1236363] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
1. This study was conducted to explore the promoter region of the chicken ASB15 gene by detecting the activities of the dual luciferase reporter gene and to assess expression profiles of the ASB15 gene in 10 different tissues from Gushi chickens. 2. Five dual luciferase reporter gene vectors were constructed and transfected into DF1 cells. The activities of recombined plasmids were measured and the core promoter was confirmed by bioinformatic analysis. Total RNA was extracted and the relative expression of the ASB15 gene was examined. 3. Data analysis indicated that the promoter was located from -955 to -212 bp. Results showed that the chicken ASB15 gene was expressed in heart, breast muscle and leg muscle. 4. This study has confirmed the promoter region and the expression profile of the chicken ASB15 gene, which provides a foundation for further exploring its transcriptional regulation and function.
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Affiliation(s)
- Y C Wang
- b Department of Animal Science , College of Animal Science and Technology, Gansu Agricultural University , Lanzhou , P. R. China
| | - Z J Li
- a Department of Animal Science , College of Animal Science and Veterinary Medicine, Henan Agricultural University , Zhengzhou , P. R. China
| | - R L Han
- a Department of Animal Science , College of Animal Science and Veterinary Medicine, Henan Agricultural University , Zhengzhou , P. R. China
| | - C L Xu
- a Department of Animal Science , College of Animal Science and Veterinary Medicine, Henan Agricultural University , Zhengzhou , P. R. China
| | - S H Wang
- a Department of Animal Science , College of Animal Science and Veterinary Medicine, Henan Agricultural University , Zhengzhou , P. R. China
| | - G R Sun
- a Department of Animal Science , College of Animal Science and Veterinary Medicine, Henan Agricultural University , Zhengzhou , P. R. China
| | - S H Wang
- a Department of Animal Science , College of Animal Science and Veterinary Medicine, Henan Agricultural University , Zhengzhou , P. R. China
| | - J P Wu
- b Department of Animal Science , College of Animal Science and Technology, Gansu Agricultural University , Lanzhou , P. R. China
| | - X T Kang
- a Department of Animal Science , College of Animal Science and Veterinary Medicine, Henan Agricultural University , Zhengzhou , P. R. China
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Wang YC, Han RL, Li ZJ, Geng J, Tian YD, Jiang RR, Wu JP, Kang XT. Polymorphisms of Flanking Region of the ASB15 Gene and Their Associations with Performance Traits in Chicken. Anim Biotechnol 2016; 28:53-60. [PMID: 27736301 DOI: 10.1080/10495398.2016.1200986] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Research on the identity of genes and their relationship with traits of economic importance in chickens could assist in the selection of poultry. In this study, an F2 resource population of Gushi chickens crossed with Anka broilers was used to detect single-nucleotide polymorphisms (SNPs) in the flanking region of the ASB15 gene by DNA sequencing and polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). One SNP of -1271 C>T in 5' flanking region of the chicken ASB15 gene and two SNPs of the 10618 A>G and 10716 G>A in 3' flanking region were identified. Furthermore, the 10618 A>G and 10716 G>A in 3' flanking region were in complete linkage. Association analysis results showed that -1271 C>T was not associated with performance traits, while the 10618 A>G and 10716 G>A were significantly associated with BW2, 4, 6, 8, 10, 12, SL12, CD8, CW4, 8, 12, BSL4, 8, 12, and SEW, EW, WW, BMW, LW, CW, SFT. Our results suggest that the ASB15 gene profoundly affects chicken performance traits.
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Affiliation(s)
- Y C Wang
- a College of Animal Science and Veterinary Medicine , Henan Agricultural University , Zhengzhou , P. R. China.,b College of Animal Science and Technology , Gansu Agricultural University , Lanzhou , P. R. China
| | - R L Han
- a College of Animal Science and Veterinary Medicine , Henan Agricultural University , Zhengzhou , P. R. China
| | - Z J Li
- a College of Animal Science and Veterinary Medicine , Henan Agricultural University , Zhengzhou , P. R. China
| | - J Geng
- a College of Animal Science and Veterinary Medicine , Henan Agricultural University , Zhengzhou , P. R. China
| | - Y D Tian
- a College of Animal Science and Veterinary Medicine , Henan Agricultural University , Zhengzhou , P. R. China
| | - R R Jiang
- a College of Animal Science and Veterinary Medicine , Henan Agricultural University , Zhengzhou , P. R. China
| | - J P Wu
- b College of Animal Science and Technology , Gansu Agricultural University , Lanzhou , P. R. China
| | - X T Kang
- a College of Animal Science and Veterinary Medicine , Henan Agricultural University , Zhengzhou , P. R. China
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Keller KE, Wirtz MK. Working your SOCS off: The role of ASB10 and protein degradation pathways in glaucoma. Exp Eye Res 2016; 158:154-160. [PMID: 27296073 DOI: 10.1016/j.exer.2016.06.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 06/01/2016] [Accepted: 06/07/2016] [Indexed: 12/25/2022]
Abstract
Evidence is accumulating to suggest that mutations in the Ankyrin and SOCS Box-containing protein-10 (ASB10) gene are associated with glaucoma. Since its identification in a large Oregon family with primary open-angle glaucoma (POAG), ASB10 variants have been associated with disease in US, German and Pakistani cohorts. ASB10 is a member of the ASB family of proteins, which have a common structure including a unique N-terminus, a variable number of central ankyrin (ANK) repeat domains and a suppressor of cytokine signaling (SOCS) box at the C-terminus. Mutations in ASB10 are distributed throughout the entire length of the gene including the two alternatively spliced variants of exon 1. A homozygous mutation in a Pakistani individual with POAG, which lies in the center of the SOCS box, is associated with a particularly severe form of the disease. Like other SOCS box-containing proteins, ASB10 functions in ubiquitin-mediated degradation pathways. The ANK repeats bind to proteins destined for degradation. The SOCS box recruits ubiquitin ligase proteins to form a complex to transfer ubiquitin to a substrate bound to the ANK repeats. The ubiquitin-tagged protein then enters either the proteasomal degradation pathway or the autophagic-lysosomal pathway. The choice of pathway appears to be dependent on which lysine residues are used to build polyubiquitin chains. However, these reciprocal pathways work in tandem to degrade proteins because inhibition of one pathway increases degradation via the other pathway. In this publication, we will review the literature that supports identification of ASB10 as a glaucoma-associated gene and the current knowledge of the function of the ASB10 protein. In addition, we present new data that indicates ASB10 expression is up-regulated by the inflammatory cytokines tumor necrosis factor-α and interleukin-1α. Finally, we will describe the emerging role of other SOCS box-containing proteins in protein degradation pathways in ocular cells.
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Affiliation(s)
- Kate E Keller
- Casey Eye Institute, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA.
| | - Mary K Wirtz
- Casey Eye Institute, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA
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Okumura F, Joo-Okumura A, Nakatsukasa K, Kamura T. The role of cullin 5-containing ubiquitin ligases. Cell Div 2016; 11:1. [PMID: 27030794 PMCID: PMC4812663 DOI: 10.1186/s13008-016-0016-3] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 03/02/2016] [Indexed: 01/01/2023] Open
Abstract
The suppressor of cytokine signaling (SOCS) box consists of the BC box and the cullin 5 (Cul5) box, which interact with Elongin BC and Cul5, respectively. SOCS box-containing proteins have ubiquitin ligase activity mediated by the formation of a complex with the scaffold protein Cul5 and the RING domain protein Rbx2, and are thereby members of the cullin RING ligase superfamily. Cul5-type ubiquitin ligases have a variety of substrates that are targeted for polyubiquitination and proteasomal degradation. Here, we review the current knowledge on the identification of Cul5 and the regulation of its expression, as well as the signaling pathways regulated by Cul5 and how viruses highjack the Cul5 system to overcome antiviral responses.
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Affiliation(s)
- Fumihiko Okumura
- Division of Biological Science, Graduate School of Science, Nagoya University, Nagoya, Aichi 464-8602 Japan
| | - Akiko Joo-Okumura
- Division of Biological Science, Graduate School of Science, Nagoya University, Nagoya, Aichi 464-8602 Japan
| | - Kunio Nakatsukasa
- Division of Biological Science, Graduate School of Science, Nagoya University, Nagoya, Aichi 464-8602 Japan
| | - Takumi Kamura
- Division of Biological Science, Graduate School of Science, Nagoya University, Nagoya, Aichi 464-8602 Japan
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