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Zhao Q, Li Y, Du X, Chen X, Jiao Q, Jiang H. Effects of deubiquitylases on the biological behaviors of neural stem cells. Dev Neurobiol 2021; 81:847-858. [PMID: 34241974 DOI: 10.1002/dneu.22844] [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: 09/01/2020] [Revised: 05/03/2021] [Accepted: 05/16/2021] [Indexed: 11/11/2022]
Abstract
New neurons are generated throughout life in distinct regions of the mammalian brain due to the proliferation and differentiation of neural stem cells (NSCs). Ubiquitin, a post-translational modification of cellular proteins, is an important factor in regulating neurogenesis. Deubiquitination is a biochemical process that mediates the removal of ubiquitin moieties from ubiquitin-conjugated substrates. Recent studies have provided growing evidence that deubiquitylases (DUBs) which reverse ubiquitylation process play critical roles in NSCs maintenance, differentiation and maturation. This review mainly focused on the relationship of DUBs and NSCs, and further summarized recent advances in our understanding of DUBs on regulating NSCs biological behaviors.
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Affiliation(s)
- Qiqi Zhao
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, School of Basic Medicine, Qingdao University, Qingdao, Shandong, China
| | - Yixin Li
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, School of Basic Medicine, Qingdao University, Qingdao, Shandong, China
| | - Xixun Du
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, School of Basic Medicine, Qingdao University, Qingdao, Shandong, China
| | - Xi Chen
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, School of Basic Medicine, Qingdao University, Qingdao, Shandong, China
| | - Qian Jiao
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, School of Basic Medicine, Qingdao University, Qingdao, Shandong, China
| | - Hong Jiang
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, School of Basic Medicine, Qingdao University, Qingdao, Shandong, China
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Berruti G. Destruction or Reconstruction: A Subtle Liaison between the Proteolytic and Signaling Role of Protein Ubiquitination in Spermatogenesis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1288:215-240. [PMID: 34453739 DOI: 10.1007/978-3-030-77779-1_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Ubiquitination is one of the most diverse forms of protein post-translational modification that changes the function of the landscape of substrate proteins in response to stimuli, without the need for "de novo" protein synthesis. Ubiquitination is involved in almost all aspects of eukaryotic cell biology, from the best-studied role in promoting the removal of faulty or unnecessary proteins by the way of the ubiquitin proteasome system and autophagy-lysosome pathway to the recruitment of proteins in specific non-proteolytic signaling pathways, as emerged by the more recent discoveries about the protein signature with peculiar types of ubiquitin chains. Spermatogenesis, on its own, is a complex cellular developmental process in which mitosis, meiosis, and cell differentiation coexist so to result in the continuous formation of haploid spermatozoa. Successful spermatogenesis is thus at the same time a mixed result of the precise expression and correct intracellular destination of structural proteins and enzymes, from one hand, and the fine removal by targeted degradation of unfolded or damaged proteins as well as of obsolete, outlived proteins, from the other hand. In this minireview, I will focus on the importance of the ubiquitin system all over the spermatogenic process, discussing both proteolytic and non-proteolytic functions of protein ubiquitination. Alterations in the ubiquitin system have been in fact implicated in pathologies leading to male infertility. Notwithstanding several aspects of the multifaceted world of the ubiquitin system have been clarified, the physiological meaning of the so-called ubiquitin code remains still partially elusive. The studies reviewed in this chapter provide information that could aid the investigators to pursue new promising discoveries in the understanding of human and animal reproductive potential.
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Martín-Rodríguez C, Song M, Anta B, González-Calvo FJ, Deogracias R, Jing D, Lee FS, Arevalo JC. TrkB deubiquitylation by USP8 regulates receptor levels and BDNF-dependent neuronal differentiation. J Cell Sci 2020; 133:jcs247841. [PMID: 33288548 PMCID: PMC7774901 DOI: 10.1242/jcs.247841] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 11/13/2020] [Indexed: 01/04/2023] Open
Abstract
Ubiquitylation of receptor tyrosine kinases (RTKs) regulates both the levels and functions of these receptors. The neurotrophin receptor TrkB (also known as NTRK2), a RTK, is ubiquitylated upon activation by brain-derived neurotrophic factor (BDNF) binding. Although TrkB ubiquitylation has been demonstrated, there is a lack of knowledge regarding the precise repertoire of proteins that regulates TrkB ubiquitylation. Here, we provide mechanistic evidence indicating that ubiquitin carboxyl-terminal hydrolase 8 (USP8) modulates BDNF- and TrkB-dependent neuronal differentiation. USP8 binds to the C-terminus of TrkB using its microtubule-interacting domain (MIT). Immunopurified USP8 deubiquitylates TrkB in vitro, whereas knockdown of USP8 results in enhanced ubiquitylation of TrkB upon BDNF treatment in neurons. As a consequence of USP8 depletion, TrkB levels and its activation are reduced. Moreover, USP8 protein regulates the differentiation and correct BDNF-dependent dendritic formation of hippocampal neurons in vitro and in vivo We conclude that USP8 positively regulates the levels and activation of TrkB, modulating BDNF-dependent neuronal differentiation.This article has an associated First Person interview with the first author of the paper.
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Affiliation(s)
- Carlos Martín-Rodríguez
- Departmento de Biología Celular y Patología, Instituto de Neurociencias de Castilla y León, University of Salamanca, Salamanca 37007, Spain
- Institute of Biomedical Research of Salamanca, 37007 Salamanca, Spain
| | - Minseok Song
- Department of Life Sciences, Yeungnam University, Gyeongsan, Gyeongbuk 38541, Korea
| | - Begoña Anta
- Departmento de Biología Celular y Patología, Instituto de Neurociencias de Castilla y León, University of Salamanca, Salamanca 37007, Spain
- Institute of Biomedical Research of Salamanca, 37007 Salamanca, Spain
| | - Francisco J González-Calvo
- Departmento de Biología Celular y Patología, Instituto de Neurociencias de Castilla y León, University of Salamanca, Salamanca 37007, Spain
| | - Rubén Deogracias
- Departmento de Biología Celular y Patología, Instituto de Neurociencias de Castilla y León, University of Salamanca, Salamanca 37007, Spain
| | - Deqiang Jing
- Department of Psychiatry, Weill Medical College of Cornell University, 1300 York Avenue, New York, NY 10065, USA
| | - Francis S Lee
- Department of Psychiatry, Weill Medical College of Cornell University, 1300 York Avenue, New York, NY 10065, USA
| | - Juan Carlos Arevalo
- Departmento de Biología Celular y Patología, Instituto de Neurociencias de Castilla y León, University of Salamanca, Salamanca 37007, Spain
- Institute of Biomedical Research of Salamanca, 37007 Salamanca, Spain
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Das S, Ramakrishna S, Kim KS. Critical Roles of Deubiquitinating Enzymes in the Nervous System and Neurodegenerative Disorders. Mol Cells 2020; 43:203-214. [PMID: 32133826 PMCID: PMC7103888 DOI: 10.14348/molcells.2020.2289] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 01/10/2020] [Accepted: 02/02/2020] [Indexed: 12/15/2022] Open
Abstract
Post-translational modifications play major roles in the stability, function, and localization of target proteins involved in the nervous system. The ubiquitin-proteasome pathway uses small ubiquitin molecules to degrade neuronal proteins. Deubiquitinating enzymes (DUBs) reverse this degradation and thereby control neuronal cell fate, synaptic plasticity,axonal growth, and proper function of the nervous system.Moreover, mutations or downregulation of certain DUBshave been found in several neurodegenerative diseases, as well as gliomas and neuroblastomas. Based on emerging findings, DUBs represent an important target for therapeutic intervention in various neurological disorders. Here, we summarize advances in our understanding of the roles of DUBs related to neurobiology.
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Affiliation(s)
- Soumyadip Das
- Graduate School of Biomedical Science and Engineering, Hanyang University, Seoul 04763, Korea
| | - Suresh Ramakrishna
- Graduate School of Biomedical Science and Engineering, Hanyang University, Seoul 04763, Korea
- College of Medicine, Hanyang University, Seoul 04763, Korea
| | - Kye-Seong Kim
- Graduate School of Biomedical Science and Engineering, Hanyang University, Seoul 04763, Korea
- College of Medicine, Hanyang University, Seoul 04763, Korea
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Budzinska MI, Villarroel-Campos D, Golding M, Weston A, Collinson L, Snijders AP, Schiavo G. PTPN23 binds the dynein adaptor BICD1 and is required for endocytic sorting of neurotrophin receptors. J Cell Sci 2020; 133:jcs242412. [PMID: 32079660 PMCID: PMC7132798 DOI: 10.1242/jcs.242412] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 02/04/2020] [Indexed: 12/16/2022] Open
Abstract
Signalling by target-derived neurotrophins is essential for the correct development of the nervous system and its maintenance throughout life. Several aspects concerning the lifecycle of neurotrophins and their receptors have been characterised over the years, including the formation, endocytosis and trafficking of signalling-competent ligand-receptor complexes. However, the molecular mechanisms directing the sorting of activated neurotrophin receptors are still elusive. Previously, our laboratory identified Bicaudal-D1 (BICD1), a dynein motor adaptor, as a key factor for lysosomal degradation of brain-derived neurotrophic factor (BDNF)-activated TrkB (also known as NTRK2) and p75NTR (also known as NGFR) in motor neurons. Here, using a proteomics approach, we identified protein tyrosine phosphatase, non-receptor type 23 (PTPN23), a member of the endosomal sorting complexes required for transport (ESCRT) machinery, in the BICD1 interactome. Molecular mapping revealed that PTPN23 is not a canonical BICD1 cargo; instead, PTPN23 binds the N-terminus of BICD1, which is also essential for the recruitment of cytoplasmic dynein. In line with the BICD1-knockdown phenotype, loss of PTPN23 leads to increased accumulation of BDNF-activated p75NTR and TrkB in swollen vacuole-like compartments, suggesting that neuronal PTPN23 is a novel regulator of the endocytic sorting of neurotrophin receptors.
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Affiliation(s)
- Marta I Budzinska
- Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology, University College London, London WC1N 3BG, UK
| | - David Villarroel-Campos
- Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology, University College London, London WC1N 3BG, UK
| | - Matthew Golding
- William Harvey Research Institute, Queen Mary University of London, London EC1M 6BQ, UK
| | - Anne Weston
- Electron Microscopy, The Francis Crick Institute, 1 Midland Road, London NW1 1ST, UK
| | - Lucy Collinson
- Electron Microscopy, The Francis Crick Institute, 1 Midland Road, London NW1 1ST, UK
| | - Ambrosius P Snijders
- Proteomics Science Technology Platforms, The Francis Crick Institute, 1 Midland Road, London NW1 1ST, UK
| | - Giampietro Schiavo
- Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology, University College London, London WC1N 3BG, UK
- UK Dementia Research Institute, University College London, London WC1E 6BT, UK
- Discoveries Centre for Regenerative and Precision Medicine, University College London Campus, London WC1N 3BG, UK
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Ubiquitin-specific protease 8 (USP8/UBPy): a prototypic multidomain deubiquitinating enzyme with pleiotropic functions. Biochem Soc Trans 2020; 47:1867-1879. [PMID: 31845722 PMCID: PMC6925526 DOI: 10.1042/bst20190527] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 11/29/2019] [Accepted: 12/02/2019] [Indexed: 01/07/2023]
Abstract
Protein modification by ubiquitin is one of the most versatile posttranslational regulations and counteracted by almost 100 deubiquitinating enzymes (DUBs). USP8 was originally identified as a growth regulated ubiquitin-specific protease and is like many other DUBs characterized by its multidomain architecture. Besides the catalytic domain, specific protein-protein interaction modules were characterized which contribute to USP8 substrate recruitment, regulation and targeting to distinct protein complexes. Studies in mice and humans impressively showed the physiological relevance and non-redundant function of USP8 within the context of the whole organism. USP8 knockout (KO) mice exhibit early embryonic lethality while induced deletion in adult animals rapidly causes lethal liver failure. Furthermore, T-cell specific ablation disturbs T-cell development and function resulting in fatal autoimmune inflammatory bowel disease. In human patients, somatic mutations in USP8 were identified as the underlying cause of adrenocorticotropic hormone (ACTH) releasing pituitary adenomas causing Cushing's disease (CD). Here we provide an overview of the versatile molecular, cellular and pathology associated function and regulation of USP8 which appears to depend on specific protein binding partners, substrates and the cellular context.
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Zhu J, Huang G, Hua X, Li Y, Yan H, Che X, Tian Z, Liufu H, Huang C, Li J, Xu J, Dai W, Huang H, Huang C. CD44s is a crucial ATG7 downstream regulator for stem-like property, invasion, and lung metastasis of human bladder cancer (BC) cells. Oncogene 2019; 38:3301-3315. [PMID: 30635654 PMCID: PMC7112719 DOI: 10.1038/s41388-018-0664-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 12/01/2018] [Accepted: 12/11/2018] [Indexed: 02/06/2023]
Abstract
Over half a million US residents are suffering with bladder cancer (BC), which costs a total $4 billion in treatment annually. Although recent studies report that autophagy-related gene 7 (ATG7) is overexpressed in BCs, the regulatory effects of ATG7 on cancer stem-like phenotypes and invasion have not been explored yet. Current studies demonstrated that the deficiency of ATG7 by its shRNA dramatically reduced sphere formation and invasion in vitro, as well as lung metastasis in vivo in human invasive BC cells. Further studies indicated that the knockdown of ATG7 attenuated the expression of CD44 standard (CD44s), while ectopic introduction of CD44s, was capable of completely restoring sphere formation, invasion, and lung metastasis in T24T(shATG7) cells. Mechanistic studies revealed that ATG7 overexpression stabilized CD44s proteins accompanied with upregulating USP28 proteins. Upregulated USP28 was able to bind to CD44s and remove the ubiquitin group from CD44s' protein, resulting in the stabilization of CD44s protein. Moreover, ATG7 inhibition stabilized AUF1 protein and thereby reduced tet1 mRNA stability and expression, which was able to demethylate usp28 promoter, reduced USP28 expression, finally promoting CD44s degradation. In addition, CD44s was defined to inhibit degradation of RhoGDIβ, which in turn promotes BC invasion. Our results demonstrate that CD44s is a key ATG7 downstream regulator of the sphere formation, invasion, and lung metastasis of BCs, providing significant insight into understanding the BC invasions, metastasis, and stem-like properties.
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Affiliation(s)
- Junlan Zhu
- Nelson Institute of Environmental Medicine, New York University School of Medicine, New York, NY, 10010, USA
| | - Grace Huang
- Nelson Institute of Environmental Medicine, New York University School of Medicine, New York, NY, 10010, USA
- Summer Intern from Northern Highlands Regional High School, 298 Hillside Ave, Allendale, NJ, 07401, USA
| | - Xiaohui Hua
- Nelson Institute of Environmental Medicine, New York University School of Medicine, New York, NY, 10010, USA
| | - Yang Li
- Nelson Institute of Environmental Medicine, New York University School of Medicine, New York, NY, 10010, USA
| | - Huiying Yan
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Key Laboratory of Laboratory Medicine, Ministry of Education, China, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Xun Che
- Nelson Institute of Environmental Medicine, New York University School of Medicine, New York, NY, 10010, USA
| | - Zhongxian Tian
- Nelson Institute of Environmental Medicine, New York University School of Medicine, New York, NY, 10010, USA
| | - Huating Liufu
- Nelson Institute of Environmental Medicine, New York University School of Medicine, New York, NY, 10010, USA
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Key Laboratory of Laboratory Medicine, Ministry of Education, China, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Chao Huang
- Nelson Institute of Environmental Medicine, New York University School of Medicine, New York, NY, 10010, USA
| | - Jingxia Li
- Nelson Institute of Environmental Medicine, New York University School of Medicine, New York, NY, 10010, USA
| | - Jiheng Xu
- Nelson Institute of Environmental Medicine, New York University School of Medicine, New York, NY, 10010, USA
| | - Wei Dai
- Nelson Institute of Environmental Medicine, New York University School of Medicine, New York, NY, 10010, USA
| | - Haishan Huang
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Key Laboratory of Laboratory Medicine, Ministry of Education, China, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China.
| | - Chuanshu Huang
- Nelson Institute of Environmental Medicine, New York University School of Medicine, New York, NY, 10010, USA.
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Wijesuriya TM, De Ceuninck L, Masschaele D, Sanderson MR, Carias KV, Tavernier J, Wevrick R. The Prader-Willi syndrome proteins MAGEL2 and necdin regulate leptin receptor cell surface abundance through ubiquitination pathways. Hum Mol Genet 2018; 26:4215-4230. [PMID: 28973533 DOI: 10.1093/hmg/ddx311] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 08/01/2017] [Indexed: 12/13/2022] Open
Abstract
In Prader-Willi syndrome (PWS), obesity is caused by the disruption of appetite-controlling pathways in the brain. Two PWS candidate genes encode MAGEL2 and necdin, related melanoma antigen proteins that assemble into ubiquitination complexes. Mice lacking Magel2 are obese and lack leptin sensitivity in hypothalamic pro-opiomelanocortin neurons, suggesting dysregulation of leptin receptor (LepR) activity. Hypothalamus from Magel2-null mice had less LepR and altered levels of ubiquitin pathway proteins that regulate LepR processing (Rnf41, Usp8, and Stam1). MAGEL2 increased the cell surface abundance of LepR and decreased their degradation. LepR interacts with necdin, which interacts with MAGEL2, which complexes with RNF41 and USP8. Mutations in the MAGE homology domain of MAGEL2 suppress RNF41 stabilization and prevent the MAGEL2-mediated increase of cell surface LepR. Thus, MAGEL2 and necdin together control LepR sorting and degradation through a dynamic ubiquitin-dependent pathway. Loss of MAGEL2 and necdin may uncouple LepR from ubiquitination pathways, providing a cellular mechanism for obesity in PWS.
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Affiliation(s)
| | - Leentje De Ceuninck
- Department of Biochemistry, VIB Center for Medical Biotechnology and Faculty of Medicine and Health Sciences, Ghent University, B-9000 Ghent, Belgium
| | - Delphine Masschaele
- Department of Biochemistry, VIB Center for Medical Biotechnology and Faculty of Medicine and Health Sciences, Ghent University, B-9000 Ghent, Belgium
| | - Matthea R Sanderson
- Department of Medical Genetics, University of Alberta, Edmonton T6G 2H7, Canada
| | | | - Jan Tavernier
- Department of Biochemistry, VIB Center for Medical Biotechnology and Faculty of Medicine and Health Sciences, Ghent University, B-9000 Ghent, Belgium
| | - Rachel Wevrick
- Department of Medical Genetics, University of Alberta, Edmonton T6G 2H7, Canada
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Yang L, Xu F, Zhang M, Shang XY, Xie X, Fu T, Li JP, Li HL. Role of LncRNA MALAT-1 in hypoxia-induced PC12 cell injury via regulating p38MAPK signaling pathway. Neurosci Lett 2018; 670:41-47. [PMID: 29360503 DOI: 10.1016/j.neulet.2018.01.036] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 01/18/2018] [Accepted: 01/18/2018] [Indexed: 10/18/2022]
Abstract
OBJECTIVE To investigate the role of LncRNA MALAT-1 in hypoxia-induced cell injury. METHODS Pheochromocytoma-12 (PC12) cells were divided into seven groups: Control group, Hypoxia group (Cells treated with CoCl2), MALAT-1 group (Hypoxic cells treated with MALAT-1), NC group (Hypoxic cells treated with empty plasmid), MALAT-1 siRNA group (Hypoxic cells treated with siRNA MALAT-1), SB203580 group (Hypoxic cells treated with p38MAPK inhibitor), and MALAT-1 + SB20358 group. The content of reactive oxygen species (ROS), malondialdehyde (MDA), super oxide dismutase (SOD) and lactate dehydrogenase (LDH) was determined. Cell viability was detected by MTT assay. Apoptotic cells were observed by Hoechst 33258 and TUNEL staining assay. Mitochondrial membrane potential (MMP) was measured using JC1 vital dye. RESULTS The decreased cell viability and increased expressions of MALAT-1 and p-p38 were observed in hypoxic PC12 cells time-dependently (P < 0.05). Besides, hypoxic PC12 cells had an elevation in p-p38, ROS, MDA and LDH with the increased apoptotic cells, but a reduction in SOD and MMP, and these similar changes were more obvious in those hypoxic cells treated with MALAT-1 when compared with Controls (all P < 0.05). However, the hypoxic PC12 cells treated with SB203580 and MALAT-1 siRNA led to opposite results compared with MALAT-1 group (all P < 0.05). Importantly, SB203580 could reverse the function of MALAT-1 in aggravating the hypoxia injury of PC12 cells. CONCLUSION MALAT-1 can promote the apoptosis and oxidative stress of PC12 cells by activating p38MAPK pathway, thus aggravating the damage of PC12 cells induced by chemical hypoxia.
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Affiliation(s)
- Lin Yang
- Zunyi Medical University, Zhuhai Campus, Zhuhai, Guangdong 519041, China
| | - Fei Xu
- Department of Rehabilitation, Heilongjiang Provincial Hospital, Harbin, Heilongjiang 150036, China
| | - Miao Zhang
- The Second Affiliated Hospital, Heilongjiang University of Chinese Medicine, Harbin 150001, Heilongjiang, China
| | - Xiao-Ying Shang
- Heilongjiang Provincial Hospital, Harbin, Heilongjiang 150036, China
| | - Xin Xie
- Department of Rehabilitation, Heilongjiang Provincial Hospital, Harbin, Heilongjiang 150036, China
| | - Tao Fu
- Department of Rehabilitation, Heilongjiang Provincial Hospital, Harbin, Heilongjiang 150036, China
| | - Jian-Ping Li
- Zunyi Medical University, Zhuhai Campus, Zhuhai, Guangdong 519041, China
| | - Hong-Lin Li
- Department of Rehabilitation, The Second Affiliated Hospital, Heilongjiang University of Chinese Medicine, No. 411, Guogeli Street, Nangang District, Harbin, Heilongjiang 150001, China.
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Abstract
More than a decade after a Nobel Prize was awarded for the discovery of the ubiquitin-proteasome system and clinical approval of proteasome and ubiquitin E3 ligase inhibitors, first-generation deubiquitylating enzyme (DUB) inhibitors are now approaching clinical trials. However, although our knowledge of the physiological and pathophysiological roles of DUBs has evolved tremendously, the clinical development of selective DUB inhibitors has been challenging. In this Review, we discuss these issues and highlight recent advances in our understanding of DUB enzymology and biology as well as technological improvements that have contributed to the current interest in DUBs as therapeutic targets in diseases ranging from oncology to neurodegeneration.
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Affiliation(s)
- Jeanine A. Harrigan
- Mission Therapeutics Ltd, Moneta, Babraham Research Campus, Cambridge, CB22 3AT UK
| | - Xavier Jacq
- Mission Therapeutics Ltd, Moneta, Babraham Research Campus, Cambridge, CB22 3AT UK
| | - Niall M. Martin
- Mission Therapeutics Ltd, Moneta, Babraham Research Campus, Cambridge, CB22 3AT UK
- Present Address: and Department of Biochemistry, The Wellcome Trust and Cancer Research UK Gurdon Institute, Tennis Court Road, University of Cambridge, Cambridge, CB2 1QN UK
- Present address: Artios Pharmaceuticals Ltd, Maia, Babraham Research Campus, Cambridge CB22 3AT, UK,
| | - Stephen P. Jackson
- Mission Therapeutics Ltd, Moneta, Babraham Research Campus, Cambridge, CB22 3AT UK
- Present Address: and Department of Biochemistry, The Wellcome Trust and Cancer Research UK Gurdon Institute, Tennis Court Road, University of Cambridge, Cambridge, CB2 1QN UK
- Present address: Artios Pharmaceuticals Ltd, Maia, Babraham Research Campus, Cambridge CB22 3AT, UK,
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11
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Gioria M, Pasini ME, Berruti G. Dynamic of contribution of UBPy-sorted cargo to acrosome biogenesis: effects of its derailment in a mouse model of globozoospermia, the infertile Vps54 (L967Q) mutant. Cell Tissue Res 2017; 369:413-427. [DOI: 10.1007/s00441-017-2592-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 02/21/2017] [Indexed: 12/14/2022]
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12
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Sánchez-Sánchez J, Arévalo JC. A Review on Ubiquitination of Neurotrophin Receptors: Facts and Perspectives. Int J Mol Sci 2017; 18:ijms18030630. [PMID: 28335430 PMCID: PMC5372643 DOI: 10.3390/ijms18030630] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 03/07/2017] [Accepted: 03/10/2017] [Indexed: 02/04/2023] Open
Abstract
Ubiquitination is a reversible post-translational modification involved in a plethora of different physiological functions. Among the substrates that are ubiquitinated, neurotrophin receptors (TrkA, TrkB, TrkC, and p75NTR) have been studied recently. TrkA is the most studied receptor in terms of its ubiquitination, and different E3 ubiquitin ligases and deubiquitinases have been implicated in its ubiquitination, whereas not much is known about the other neurotrophin receptors aside from their ubiquitination. Additional studies are needed that focus on the ubiquitination of TrkB, TrkC, and p75NTR in order to further understand the role of ubiquitination in their physiological and pathological functions. Here we review what is currently known regarding the ubiquitination of neurotrophin receptors and its physiological and pathological relevance.
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Affiliation(s)
- Julia Sánchez-Sánchez
- Department of Cell Biology and Pathology, Institute of Neuroscience Castile & Leon, University of Salamanca, 37007 Salamanca, Spain.
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13
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Anta B, Martín-Rodríguez C, Gomis-Perez C, Calvo L, López-Benito S, Calderón-García AA, Vicente-García C, Villarroel Á, Arévalo JC. Ubiquitin-specific Protease 36 (USP36) Controls Neuronal Precursor Cell-expressed Developmentally Down-regulated 4-2 (Nedd4-2) Actions over the Neurotrophin Receptor TrkA and Potassium Voltage-gated Channels 7.2/3 (Kv7.2/3). J Biol Chem 2016; 291:19132-45. [PMID: 27445338 DOI: 10.1074/jbc.m116.722637] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Indexed: 11/06/2022] Open
Abstract
Ubiquitination of the TrkA neurotrophin receptor in response to NGF is critical in the regulation of TrkA activation and functions. TrkA is ubiquitinated, among other E3 ubiquitin ligases, by Nedd4-2. To understand mechanistically how TrkA ubiquitination is regulated, we performed a siRNA screening to identify deubiquitinating enzymes and found that USP36 acts as an important regulator of TrkA activation kinetics and ubiquitination. However, USP36 action on TrkA was indirect because it does not deubiquitinate TrkA. Instead, USP36 binds to Nedd4-2 and regulates the association of TrkA and Nedd4-2. In addition, depletion of USP36 increases TrkA·Nedd4-2 complex formation, whereas USP36 expression disrupts the complex, resulting in an enhancement or impairment of Nedd4-2-dependent TrkA ubiquitination, respectively. Moreover, USP36 depletion leads to enhanced total and surface TrkA expression that results in increased NGF-mediated TrkA activation and signaling that augments PC12 cell differentiation. USP36 actions extend beyond TrkA because the presence of USP36 interferes with Nedd4-2-dependent Kv7.2/3 channel regulation. Our results demonstrate that USP36 binds to and regulates the actions of Nedd4-2 over different substrates affecting their expression and functions.
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Affiliation(s)
- Begoña Anta
- From the Departmento de Biología Celular y Patología, Instituto de Neurociencias de Castilla y León, University of Salamanca, Salamanca 37007, Spain, the Institute of Biomedical Research of Salamanca, 47195 Salamanca, Spain, and
| | - Carlos Martín-Rodríguez
- From the Departmento de Biología Celular y Patología, Instituto de Neurociencias de Castilla y León, University of Salamanca, Salamanca 37007, Spain, the Institute of Biomedical Research of Salamanca, 47195 Salamanca, Spain, and
| | - Carolina Gomis-Perez
- the Unidad de Biofísica, Consejo Superior de Investigaciones Científicas, CSIC, UPV/EHU, Universidad del País Vasco, barrio Sarriena s/n, 48940 Leoia, Spain
| | - Laura Calvo
- From the Departmento de Biología Celular y Patología, Instituto de Neurociencias de Castilla y León, University of Salamanca, Salamanca 37007, Spain, the Institute of Biomedical Research of Salamanca, 47195 Salamanca, Spain, and
| | - Saray López-Benito
- From the Departmento de Biología Celular y Patología, Instituto de Neurociencias de Castilla y León, University of Salamanca, Salamanca 37007, Spain, the Institute of Biomedical Research of Salamanca, 47195 Salamanca, Spain, and
| | - Andrés A Calderón-García
- From the Departmento de Biología Celular y Patología, Instituto de Neurociencias de Castilla y León, University of Salamanca, Salamanca 37007, Spain
| | - Cristina Vicente-García
- From the Departmento de Biología Celular y Patología, Instituto de Neurociencias de Castilla y León, University of Salamanca, Salamanca 37007, Spain, the Institute of Biomedical Research of Salamanca, 47195 Salamanca, Spain, and
| | - Álvaro Villarroel
- the Unidad de Biofísica, Consejo Superior de Investigaciones Científicas, CSIC, UPV/EHU, Universidad del País Vasco, barrio Sarriena s/n, 48940 Leoia, Spain
| | - Juan C Arévalo
- From the Departmento de Biología Celular y Patología, Instituto de Neurociencias de Castilla y León, University of Salamanca, Salamanca 37007, Spain, the Institute of Biomedical Research of Salamanca, 47195 Salamanca, Spain, and
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14
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Yeates EFA, Tesco G. The Endosome-associated Deubiquitinating Enzyme USP8 Regulates BACE1 Enzyme Ubiquitination and Degradation. J Biol Chem 2016; 291:15753-66. [PMID: 27302062 DOI: 10.1074/jbc.m116.718023] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Indexed: 01/04/2023] Open
Abstract
The β-site amyloid precursor protein-cleaving enzyme (BACE1) is the rate-limiting enzyme in the production of amyloid-β, the toxic peptide that accumulates in the brain of subjects affected by Alzheimer disease. Our previous studies have shown that BACE1 is degraded via the lysosomal pathway and that that depletion of the trafficking molecule Golgi-localized γ-ear-containing ARF-binding protein 3 (GGA3) results in increased BACE1 levels and activity because of impaired lysosomal degradation. We also determined that GGA3 regulation of BACE1 levels requires its ability to bind ubiquitin. Accordingly, we reported that BACE1 is ubiquitinated at lysine 501 and that lack of ubiquitination at lysine 501 produces BACE1 stabilization. Ubiquitin conjugation is a reversible process mediated by deubiquitinating enzymes. The ubiquitin-specific peptidase 8 (USP8), an endosome-associated deubiquitinating enzyme, regulates the ubiquitination, trafficking, and lysosomal degradation of several plasma membrane proteins. Here, we report that RNAi-mediated depletion of USP8 reduced levels of both ectopically expressed and endogenous BACE1 in H4 human neuroglioma cells. Moreover, USP8 depletion increased BACE1 ubiquitination, promoted BACE1 accumulation in the early endosomes and late endosomes/lysosomes, and decreased levels of BACE1 in the recycling endosomes. We also found that decreased BACE1 protein levels were accompanied by a decrease in BACE1-mediated amyloid precursor protein cleavage and amyloid-β levels. Our findings demonstrate that USP8 plays a key role in the trafficking and degradation of BACE1 by deubiquitinating lysine 501. These studies suggest that therapies able to accelerate BACE1 degradation (e.g. by increasing BACE1 ubiquitination) may represent a potential treatment for Alzheimer disease.
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Affiliation(s)
| | - Giuseppina Tesco
- From the Department of Neuroscience, Tufts University School of Medicine, Boston, Massachusetts 02111
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15
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Sbiera S, Deutschbein T, Weigand I, Reincke M, Fassnacht M, Allolio B. The New Molecular Landscape of Cushing's Disease. Trends Endocrinol Metab 2015; 26:573-583. [PMID: 26412158 DOI: 10.1016/j.tem.2015.08.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Revised: 08/05/2015] [Accepted: 08/08/2015] [Indexed: 11/21/2022]
Abstract
Cushing's disease (CD) is caused by corticotropin-secreting pituitary adenomas and results in substantial morbidity and mortality. Its molecular basis has remained poorly understood until the past few years, when several proteins and genes [such as testicular orphan nuclear receptor 4 (TR4) and heat shock protein 90 (HSP90)] were found to play key roles in the disease. Most recently, mutations in the gene of ubiquitin-specific peptidase 8 (USP8) increasing its deubiquination activity were discovered in a high percentage of corticotroph adenomas. Here, we will discuss emerging insights in the molecular alterations that finally result in CD. The therapeutic potential of these findings needs to be carefully evaluated in the near future, hopefully resulting in new treatment options for this devastating disorder.
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Affiliation(s)
- Silviu Sbiera
- Department of Internal Medicine I, Endocrine and Diabetes Unit, University Hospital Würzburg, University of Würzburg, Würzburg, Germany
| | - Timo Deutschbein
- Department of Internal Medicine I, Endocrine and Diabetes Unit, University Hospital Würzburg, University of Würzburg, Würzburg, Germany
| | - Isabel Weigand
- Department of Internal Medicine I, Endocrine and Diabetes Unit, University Hospital Würzburg, University of Würzburg, Würzburg, Germany
| | - Martin Reincke
- Endocrine Research Unit, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Martin Fassnacht
- Comprehensive Cancer Center Mainfranken, University of Würzburg, Würzburg, Germany.
| | - Bruno Allolio
- Department of Internal Medicine I, Endocrine and Diabetes Unit, University Hospital Würzburg, University of Würzburg, Würzburg, Germany
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