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Zhao Y, Lin M, Zhai F, Chen J, Jin X. Exploring the Role of Ubiquitin-Proteasome System in the Pathogenesis of Parkinson's Disease. Pharmaceuticals (Basel) 2024; 17:782. [PMID: 38931449 PMCID: PMC11207014 DOI: 10.3390/ph17060782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 05/23/2024] [Accepted: 06/08/2024] [Indexed: 06/28/2024] Open
Abstract
Parkinson's disease (PD) is a prevalent neurodegenerative disorder among the elderly population. The pathogenesis of PD encompasses genetic alterations, environmental factors, and age-related neurodegenerative processes. Numerous studies have demonstrated that aberrant functioning of the ubiquitin-proteasome system (UPS) plays a crucial role in the initiation and progression of PD. Notably, E3 ubiquitin ligases serve as pivotal components determining substrate specificity within UPS and are intimately associated with the regulation of various proteins implicated in PD pathology. This review comprehensively summarizes the mechanisms by which E3 ubiquitin ligases and deubiquitinating enzymes modulate PD-associated proteins and signaling pathways, while exploring the intricate relationship between UPS dysfunctions and PD etiology. Furthermore, this article discusses recent research advancements regarding inhibitors targeting PD-related E3 ubiquitin ligases.
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Affiliation(s)
- Yiting Zhao
- Department of Chemoradiotherapy, The Affiliated People’s Hospital of Ningbo University, Ningbo 315040, China; (Y.Z.); (M.L.)
- Department of Ultrasound Medicine, The Affiliated People’s Hospital of Ningbo University, Ningbo 315040, China
- Zhejiang Key Laboratory of Pathophysiology, Department of Biochemistry and Molecular Biology, Health Science Center of Ningbo University, Ningbo 315211, China;
| | - Man Lin
- Department of Chemoradiotherapy, The Affiliated People’s Hospital of Ningbo University, Ningbo 315040, China; (Y.Z.); (M.L.)
- Zhejiang Key Laboratory of Pathophysiology, Department of Biochemistry and Molecular Biology, Health Science Center of Ningbo University, Ningbo 315211, China;
| | - Fengguang Zhai
- Zhejiang Key Laboratory of Pathophysiology, Department of Biochemistry and Molecular Biology, Health Science Center of Ningbo University, Ningbo 315211, China;
| | - Jun Chen
- Department of Chemoradiotherapy, The Affiliated People’s Hospital of Ningbo University, Ningbo 315040, China; (Y.Z.); (M.L.)
- Zhejiang Key Laboratory of Pathophysiology, Department of Biochemistry and Molecular Biology, Health Science Center of Ningbo University, Ningbo 315211, China;
| | - Xiaofeng Jin
- Department of Chemoradiotherapy, The Affiliated People’s Hospital of Ningbo University, Ningbo 315040, China; (Y.Z.); (M.L.)
- Zhejiang Key Laboratory of Pathophysiology, Department of Biochemistry and Molecular Biology, Health Science Center of Ningbo University, Ningbo 315211, China;
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2
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Mangini V, Grasso G, Belviso BD, Sciacca MFM, Lanza V, Caliandro R, Milardi D. Stretching the chains: the destabilizing impact of Cu 2+ and Zn 2+ ions on K48-linked diubiquitin. Dalton Trans 2023; 52:11835-11849. [PMID: 37581921 DOI: 10.1039/d3dt01815f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
Ubiquitin signalling and metal homeostasis play key roles in controlling several physiological cellular activities, including protein trafficking and degradation. While some relationships between these two biochemical pathways have started to surface, our knowledge of their interplay remains limited. Here, we employ a variety of techniques, such as circular dichroism, differential scanning calorimetry, pressure perturbation calorimetry, fluorescence emission, SDS-PAGE, and small-angle X-ray scattering (SAXS) to evaluate the impact of Cu2+ and Zn2+ ions on the structure and stability of K48 linked diubiquitin (K48-Ub2), a simple model for polyubiquitin chains. The SAXS analysis results show that the structure of the metal-free protein is similar to that observed when the protein is bound to the E2 conjugating enzyme, lending support to the idea that the structure of unanchored K48-linked ubiquitin chains is sufficient for identification by conjugating enzymes without the need for an induced fit mechanism. Our results indicate that K48-Ub2 can coordinate up to four metal ions with both copper and zinc ions inducing slight changes to the secondary structure of the protein. However, we noted significant distinctions in their impacts on protein stability and overall architecture. Specifically, Cu2+ ions resulted in a destabilization of the protein structure, which facilitated the formation of dimer aggregates. Next, we observed a shift in the conformational dynamics of K48-Ub2 toward less compact and more flexible states upon metal ion binding, with Zn2+ inducing a more significant effect than Cu2+ ions. Our structural modelling study demonstrates that both metal ions induced perturbations in the K48-Ub2 structure, leading to the separation of the two monomers thus inhibiting interactions with E2 enzymes. In conclusion, the findings from this study enhance our comprehension of the mechanisms underlying Ub chains recognition. Moreover, they strengthen the notion that drug discovery initiatives aimed at targeting metal-mediated disruptions in Ub signaling hold great potential for treating a wide range of diseases that stem from abnormal protein accumulation.
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Affiliation(s)
- Vincenzo Mangini
- Istituto di Cristallografia - CNR sede di Bari, Via G. Amendola 122/O, 70126 Bari, Italy.
| | - Giulia Grasso
- Istituto di Cristallografia - CNR sede secondaria di Catania, Via P. Gaifami 18, 95126 Catania, Italy.
| | - Benny Danilo Belviso
- Istituto di Cristallografia - CNR sede di Bari, Via G. Amendola 122/O, 70126 Bari, Italy.
| | - Michele F M Sciacca
- Istituto di Cristallografia - CNR sede secondaria di Catania, Via P. Gaifami 18, 95126 Catania, Italy.
| | - Valeria Lanza
- Istituto di Cristallografia - CNR sede secondaria di Catania, Via P. Gaifami 18, 95126 Catania, Italy.
| | - Rocco Caliandro
- Istituto di Cristallografia - CNR sede di Bari, Via G. Amendola 122/O, 70126 Bari, Italy.
| | - Danilo Milardi
- Istituto di Cristallografia - CNR sede secondaria di Catania, Via P. Gaifami 18, 95126 Catania, Italy.
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3
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Insights of metal 8-hydroxylquinolinol complexes as the potential anticancer drugs. J Inorg Biochem 2023; 238:112051. [PMID: 36327497 DOI: 10.1016/j.jinorgbio.2022.112051] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/21/2022] [Accepted: 10/21/2022] [Indexed: 11/06/2022]
Abstract
8-Hydroxyquinoline and its derivatives, which belong to a well-known class of quinoline based drugs with varied biological activities, have been extensively explored for the treatments of cancer, Alzheimer's disease, neurodegenerative diseases and other life-threatening diseases. In virtue of the existence of bicyclic heterocyclic scaffold, their bidentate chelators can further bind to metal ions via O- and N-donors from 8-hydroxylquinolinol skeletons to yield a variety of metal 8-hydroxylquinolinol complexes appealing as the anticancer drugs with low toxicity, due to their better biological effects and higher anticancer activities than free 8-hydroxylquinolinol ligands and cis-diammine-dichloro-platinum. The present review summarizes the recent developments in the syntheses, crystal structures, and anticancer activities of metal 8-hydroxylquinolinol complexes, attempting to discover a correlation between their structures and anticancer activities, and to provide an evidence for their potential application perspectives. It means to offer the helpful and meaningful guidance for the researchers in the future syntheses of new and highly efficient anticancer metal 8-hydroxylquinolinol complexes based drugs.
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4
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Dipyridamole for tracking amyloidogenic proteins aggregation and enhancing polyubiquitination. Arch Biochem Biophys 2022; 728:109354. [PMID: 35863477 DOI: 10.1016/j.abb.2022.109354] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 07/13/2022] [Accepted: 07/14/2022] [Indexed: 11/23/2022]
Abstract
Dipyridamole is currently used as a medication that inhibits blood clot formation and it is also investigated in the context of neurodegenerative and other amyloid related diseases. Here, we propose this molecule as a new diagnostic tool to follow the aggregation properties of three different amyloidogenic proteins tested (insulin, amylin and amyloid β peptide 1-40). Results show that dipyridamole is sensitive to early stage amyloid formation undetected by thioflavin T, giving a different response for the aggregation of the three different proteins. In addition, we show that dipyridamole is also able to enhance ubiquitin chain growth, paving the way to its potential application as therapeutic agent in neurodegenerative diseases.
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5
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Biological Potential, Gastrointestinal Digestion, Absorption, and Bioavailability of Algae-Derived Compounds with Neuroprotective Activity: A Comprehensive Review. Mar Drugs 2022; 20:md20060362. [PMID: 35736165 PMCID: PMC9227170 DOI: 10.3390/md20060362] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 05/23/2022] [Accepted: 05/24/2022] [Indexed: 12/04/2022] Open
Abstract
Currently, there is no known cure for neurodegenerative disease. However, the available therapies aim to manage some of the symptoms of the disease. Human neurodegenerative diseases are a heterogeneous group of illnesses characterized by progressive loss of neuronal cells and nervous system dysfunction related to several mechanisms such as protein aggregation, neuroinflammation, oxidative stress, and neurotransmission dysfunction. Neuroprotective compounds are essential in the prevention and management of neurodegenerative diseases. This review will focus on the neurodegeneration mechanisms and the compounds (proteins, polyunsaturated fatty acids (PUFAs), polysaccharides, carotenoids, phycobiliproteins, phenolic compounds, among others) present in seaweeds that have shown in vivo and in vitro neuroprotective activity. Additionally, it will cover the recent findings on the neuroprotective effects of bioactive compounds from macroalgae, with a focus on their biological potential and possible mechanism of action, including microbiota modulation. Furthermore, gastrointestinal digestion, absorption, and bioavailability will be discussed. Moreover, the clinical trials using seaweed-based drugs or extracts to treat neurodegenerative disorders will be presented, showing the real potential and limitations that a specific metabolite or extract may have as a new therapeutic agent considering the recent approval of a seaweed-based drug to treat Alzheimer’s disease.
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6
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Kaur A, Jaiswal N, Raj R, Kumar B, Kapur S, Kumar D, Gahlay GK, Mithu VS. Characterization of Cu2+ and Zn2+ binding sites in SUMO1 and its impact on protein stability. Int J Biol Macromol 2020; 151:204-211. [DOI: 10.1016/j.ijbiomac.2020.02.116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 01/16/2020] [Accepted: 02/11/2020] [Indexed: 10/25/2022]
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7
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Cao K, Ding X, Sheng Y, Wang Y, Liu Y. Cisplatin binds to the MDM2 RING finger domain and inhibits the ubiquitination activity. Chem Commun (Camb) 2020; 56:4599-4602. [PMID: 32211658 DOI: 10.1039/d0cc00203h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Cisplatin can directly bind to the RING finger domain of MDM2, leading to the zinc-release and protein unfolding. Consequently, cisplatin inhibits the MDM2-mediated ubiquitination, which is the molecular basis of p53 activation. This work provides insight into the cisplatin-induced p53-elevation that is involved in cell apoptosis.
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Affiliation(s)
- Kaiming Cao
- CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
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8
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Kim E, Park S, Lee JH, Mun JY, Choi WH, Yun Y, Lee J, Kim JH, Kang MJ, Lee MJ. Dual Function of USP14 Deubiquitinase in Cellular Proteasomal Activity and Autophagic Flux. Cell Rep 2019; 24:732-743. [PMID: 30021169 DOI: 10.1016/j.celrep.2018.06.058] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 04/15/2018] [Accepted: 06/14/2018] [Indexed: 12/17/2022] Open
Abstract
The ubiquitin-proteasome system and the autophagy-lysosome system are two major intracellular proteolytic pathways in eukaryotes. Although several biochemical mechanisms underlying the crosstalk between them have been suggested, little is known about the effect of enhanced proteasome activity on autophagic flux. Here, we found that upregulation of proteasome activity, which was achieved through the inhibition of USP14, significantly impaired cellular autophagic flux, especially at the autophagosome-lysosome fusion step. UVRAG appeared to function as a crucial checkpoint for the proper progression of autophagic flux. Although proteasome activation through USP14 inhibition facilitated the clearance of microtubule-associated protein tau (MAPT) and reduced the amount of its oligomeric forms, the same conditions increased the formation of inclusion bodies from nonproteasomal substrates such as huntingtin with long polyglutamine repeats. Our results collectively indicate that USP14 may function as a common denominator in the compensatory negative feedback between the two major proteolytic processes in the cell.
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Affiliation(s)
- Eunkyoung Kim
- Department of Biomedical Sciences, Seoul National University Graduate School, Seoul 03080, Korea
| | - Seoyoung Park
- Department of Biochemistry and Molecular Biology, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Jung Hoon Lee
- Department of Biochemistry and Molecular Biology, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Ji Young Mun
- Department of Structure and Function of Neural Network, Korea Brain Research Institute, Daegu 41068, Korea
| | - Won Hoon Choi
- Department of Biomedical Sciences, Seoul National University Graduate School, Seoul 03080, Korea
| | - Yejin Yun
- Department of Biomedical Sciences, Seoul National University Graduate School, Seoul 03080, Korea
| | - Jeeyoung Lee
- Department of Biomedical Sciences, Seoul National University Graduate School, Seoul 03080, Korea
| | - Ji Hyeon Kim
- Department of Biomedical Sciences, Seoul National University Graduate School, Seoul 03080, Korea
| | - Min-Ji Kang
- Department of Biomedical Sciences, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea.
| | - Min Jae Lee
- Department of Biomedical Sciences, Seoul National University Graduate School, Seoul 03080, Korea; Department of Biochemistry and Molecular Biology, Seoul National University College of Medicine, Seoul 03080, Korea.
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9
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Yang GJ, Liu H, Ma DL, Leung CH. Rebalancing metal dyshomeostasis for Alzheimer's disease therapy. J Biol Inorg Chem 2019; 24:1159-1170. [PMID: 31486954 DOI: 10.1007/s00775-019-01712-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 07/29/2019] [Indexed: 12/26/2022]
Abstract
Alzheimer's disease (AD) is a type of neurodegenerative malady that is associated with the accumulation of amyloid plaques. Metal ions are critical for the development and upkeep of brain activity, but metal dyshomeostasis can contribute to the development of neurodegenerative diseases, including AD. This review highlights the association between metal dyshomeostasis and AD pathology, the feasibility of rebalancing metal homeostasis as a therapeutic strategy for AD, and a survey of current drugs that action via rebalancing metal homeostasis. Finally, we discuss the challenges that should be overcome by researchers in the future to enable the practical use of metal homeostasis rebalancing agents for clinical application.
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Affiliation(s)
- Guan-Jun Yang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, 999078, Macau SAR, China
| | - Hao Liu
- Department of Chemistry, Hong Kong Baptist University, Kowloon, 999077, Hong Kong SAR, China
| | - Dik-Lung Ma
- Department of Chemistry, Hong Kong Baptist University, Kowloon, 999077, Hong Kong SAR, China.
| | - Chung-Hang Leung
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, 999078, Macau SAR, China.
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10
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Lanza V, Bellia F, Rizzarelli E. An inorganic overview of natural Aβ fragments: Copper(II) and zinc(II)-mediated pathways. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.04.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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11
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Nakasone MA, Lewis TA, Walker O, Thakur A, Mansour W, Castañeda CA, Goeckeler-Fried JL, Parlati F, Chou TF, Hayat O, Zhang D, Camara CM, Bonn SM, Nowicka UK, Krueger S, Glickman MH, Brodsky JL, Deshaies RJ, Fushman D. Structural Basis for the Inhibitory Effects of Ubistatins in the Ubiquitin-Proteasome Pathway. Structure 2017; 25:1839-1855.e11. [PMID: 29153505 PMCID: PMC5731780 DOI: 10.1016/j.str.2017.10.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 09/09/2017] [Accepted: 10/24/2017] [Indexed: 02/02/2023]
Abstract
The discovery of ubistatins, small molecules that impair proteasomal degradation of proteins by directly binding to polyubiquitin, makes ubiquitin itself a potential therapeutic target. Although ubistatins have the potential for drug development and clinical applications, the lack of structural details of ubiquitin-ubistatin interactions has impeded their development. Here, we characterized a panel of new ubistatin derivatives using functional and binding assays. The structures of ubiquitin complexes with ubistatin B and hemi-ubistatin revealed direct interactions with ubiquitin's hydrophobic surface patch and the basic/polar residues surrounding it. Ubistatin B binds ubiquitin and diubiquitin tighter than a high-affinity ubiquitin receptor and shows strong preference for K48 linkages over K11 and K63. Furthermore, ubistatin B shields ubiquitin conjugates from disassembly by a range of deubiquitinases and by the 26S proteasome. Finally, ubistatin B penetrates cancer cells and alters the cellular ubiquitin landscape. These findings highlight versatile properties of ubistatins and have implications for their future development and use in targeting ubiquitin-signaling pathways.
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Affiliation(s)
- Mark A Nakasone
- Department of Chemistry and Biochemistry, Center for Biomolecular Structure and Organization, University of Maryland, College Park, MD 20742, USA; Faculty of Biology, Technion - Israel Institute of Technology, Haifa, Israel
| | - Timothy A Lewis
- Center for the Science of Therapeutics, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Olivier Walker
- Institut des Sciences Analytiques, UMR 5280, CNRS, Université de Lyon, Université Lyon 1, ENS Lyon, 69100 Villeurbanne, France
| | - Anita Thakur
- Faculty of Biology, Technion - Israel Institute of Technology, Haifa, Israel
| | - Wissam Mansour
- Faculty of Biology, Technion - Israel Institute of Technology, Haifa, Israel
| | - Carlos A Castañeda
- Department of Chemistry and Biochemistry, Center for Biomolecular Structure and Organization, University of Maryland, College Park, MD 20742, USA
| | | | - Frank Parlati
- Howard Hughes Medical Institute, Division of Biology, California Institute of Technology, Pasadena, CA, USA
| | - Tsui-Fen Chou
- Howard Hughes Medical Institute, Division of Biology, California Institute of Technology, Pasadena, CA, USA
| | - Ortal Hayat
- Faculty of Biology, Technion - Israel Institute of Technology, Haifa, Israel
| | - Daoning Zhang
- Department of Chemistry and Biochemistry, Center for Biomolecular Structure and Organization, University of Maryland, College Park, MD 20742, USA
| | - Christina M Camara
- Department of Chemistry and Biochemistry, Center for Biomolecular Structure and Organization, University of Maryland, College Park, MD 20742, USA
| | - Steven M Bonn
- Department of Chemistry and Biochemistry, Center for Biomolecular Structure and Organization, University of Maryland, College Park, MD 20742, USA
| | - Urszula K Nowicka
- Department of Chemistry and Biochemistry, Center for Biomolecular Structure and Organization, University of Maryland, College Park, MD 20742, USA
| | - Susan Krueger
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
| | - Michael H Glickman
- Faculty of Biology, Technion - Israel Institute of Technology, Haifa, Israel
| | - Jeffrey L Brodsky
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Raymond J Deshaies
- Howard Hughes Medical Institute, Division of Biology, California Institute of Technology, Pasadena, CA, USA
| | - David Fushman
- Department of Chemistry and Biochemistry, Center for Biomolecular Structure and Organization, University of Maryland, College Park, MD 20742, USA.
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Naletova I, Nicoletti VG, Milardi D, Pietropaolo A, Grasso G. Copper, differently from zinc, affects the conformation, oligomerization state and activity of bradykinin. Metallomics 2017; 8:750-61. [PMID: 27328010 DOI: 10.1039/c6mt00067c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The sole role of bradykinin (BK) as an inflammatory mediator is controversial, as recent data also support an anti-inflammatory role for BK in Alzheimer's disease (AD). The involvement of two different receptors (B1R and B2R) could be a key to understand this issue. However, although copper and zinc dyshomeostasis has been demonstrated to be largely involved in the development of AD, a detailed study of the interaction of BK with these two metal ions has never been addressed. In this work, we have applied mass spectrometry, circular dichroism as well as computational methods in order to assess if copper and zinc have the ability to modulate the conformation and oligomerization of BK. In addition, we have correlated the chemical data with the effect of metals on the activity of BK analyzed in cell cultures by biochemical procedures. The biochemical analyses on monocyte/macrophage cell culture (THP-1 Cell Line human) in line with the effect of metals on the conformation of BK showed that the presence of copper can affect the signaling cascade mediated by the BK receptors. The results obtained show a further role of metal ions, particularly copper, in the development and outcome of neuroinflammatory diseases. The possible implications in AD are discussed.
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Affiliation(s)
- Irina Naletova
- Dipartimento di Scienze Biomediche e Biotecnologiche "BIOMETEC", Università degli Studi di Catania, Via S. Sofia 64, 95125 Catania, Italy. and Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici (C.I.R.C.M.S.B.), Piazza Umberto I, 1-70121 Bari, Italy
| | - Vincenzo G Nicoletti
- Dipartimento di Scienze Biomediche e Biotecnologiche "BIOMETEC", Università degli Studi di Catania, Via S. Sofia 64, 95125 Catania, Italy. and Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici (C.I.R.C.M.S.B.), Piazza Umberto I, 1-70121 Bari, Italy
| | - Danilo Milardi
- Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche, Via Paolo Gaifami 18, 95126 Catania, Italy
| | - Adriana Pietropaolo
- Dipartimento di Scienze della Salute, Università di Catanzaro, Campus Universitario, Viale Europa, 88100 Catanzaro, Italy
| | - Giuseppe Grasso
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale Andrea Doria 6, 95125, Catania, Italy.
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Grasso G, Santoro AM, Lanza V, Sbardella D, Tundo GR, Ciaccio C, Marini S, Coletta M, Milardi D. The double faced role of copper in Aβ homeostasis: A survey on the interrelationship between metal dyshomeostasis, UPS functioning and autophagy in neurodegeneration. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.06.004] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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14
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Tundo GR, Sbardella D, Ciaccio C, Grasso G, Gioia M, Coletta A, Polticelli F, Di Pierro D, Milardi D, Van Endert P, Marini S, Coletta M. Multiple functions of insulin-degrading enzyme: a metabolic crosslight? Crit Rev Biochem Mol Biol 2017. [PMID: 28635330 DOI: 10.1080/10409238.2017.1337707] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Insulin-degrading enzyme (IDE) is a ubiquitous zinc peptidase of the inverzincin family, which has been initially discovered as the enzyme responsible for insulin catabolism; therefore, its involvement in the onset of diabetes has been largely investigated. However, further studies on IDE unraveled its ability to degrade several other polypeptides, such as β-amyloid, amylin, and glucagon, envisaging the possible implication of IDE dys-regulation in the "aggregopathies" and, in particular, in neurodegenerative diseases. Over the last decade, a novel scenario on IDE biology has emerged, pointing out a multi-functional role of this enzyme in several basic cellular processes. In particular, latest advances indicate that IDE behaves as a heat shock protein and modulates the ubiquitin-proteasome system, suggesting a major implication in proteins turnover and cell homeostasis. In addition, recent observations have highlighted that the regulation of glucose metabolism by IDE is not merely based on its largely proposed role in the degradation of insulin in vivo. There is increasing evidence that improper IDE function, regulation, or trafficking might contribute to the etiology of metabolic diseases. In addition, the enzymatic activity of IDE is affected by metals levels, thus suggesting a role also in the metal homeostasis (metallostasis), which is thought to be tightly linked to the malfunction of the "quality control" machinery of the cell. Focusing on the physiological role of IDE, we will address a comprehensive vision of the very complex scenario in which IDE takes part, outlining its crucial role in interconnecting several relevant cellular processes.
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Affiliation(s)
- Grazia R Tundo
- a Department of Clinical Sciences and Translation Medicine , University of Roma Tor Vergata , Roma , Italy.,b CIRCMSB , Bari , Italy
| | - Diego Sbardella
- a Department of Clinical Sciences and Translation Medicine , University of Roma Tor Vergata , Roma , Italy.,b CIRCMSB , Bari , Italy.,c Center for TeleInfrastructures, University of Roma Tor Vergata , Roma , Italy
| | - Chiara Ciaccio
- a Department of Clinical Sciences and Translation Medicine , University of Roma Tor Vergata , Roma , Italy.,b CIRCMSB , Bari , Italy
| | - Giuseppe Grasso
- d Department of Chemistry , University of Catania , Catania , Italy.,e CNR IBB , Catania , Italy
| | - Magda Gioia
- a Department of Clinical Sciences and Translation Medicine , University of Roma Tor Vergata , Roma , Italy.,b CIRCMSB , Bari , Italy
| | - Andrea Coletta
- f Department of Chemistry , University of Aarhus , Aarhus , Denmark
| | | | - Donato Di Pierro
- a Department of Clinical Sciences and Translation Medicine , University of Roma Tor Vergata , Roma , Italy.,b CIRCMSB , Bari , Italy
| | | | - Peter Van Endert
- h Université Paris Descartes, INSERM, U1151, CNRS , Paris , France
| | - Stefano Marini
- a Department of Clinical Sciences and Translation Medicine , University of Roma Tor Vergata , Roma , Italy.,b CIRCMSB , Bari , Italy.,c Center for TeleInfrastructures, University of Roma Tor Vergata , Roma , Italy
| | - Massimo Coletta
- a Department of Clinical Sciences and Translation Medicine , University of Roma Tor Vergata , Roma , Italy.,b CIRCMSB , Bari , Italy.,c Center for TeleInfrastructures, University of Roma Tor Vergata , Roma , Italy
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15
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Tomasello MF, Nardon C, Lanza V, Di Natale G, Pettenuzzo N, Salmaso S, Milardi D, Caliceti P, Pappalardo G, Fregona D. New comprehensive studies of a gold(III) Dithiocarbamate complex with proven anticancer properties: Aqueous dissolution with cyclodextrins, pharmacokinetics and upstream inhibition of the ubiquitin-proteasome pathway. Eur J Med Chem 2017. [PMID: 28651154 DOI: 10.1016/j.ejmech.2017.06.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The gold(III)-dithiocarbamate complex AuL12 (dibromo [ethyl-N-(dithiocarboxy-kS,kS')-N-methylglycinate] gold(III)), is endowed with promising in vitro/in vivo antitumor activity and toxicological profile. Here, we report our recent strategies to improve its water solubility and stability under physiological conditions along with our efforts for unravelling its tangled mechanism of action. We used three types of α-cyclodextrins (CDs), namely β-CD, Me-β-CD and HP-β-CD to prepare aqueous solutions of AuL12. The ability of these natural oligosaccharide carriers to enhance water solubility of hydrophobic compounds, allowed drug stability of AuL12 to be investigated. Moreover, pharmacokinetic experiments were first carried out for a gold(III) coordination compound, after i.v. injection of the nanoformulation AuL12/HP-β-CD to female mice. The gold content in the blood samples was detected at scheduled times by AAS (atomic absorption spectrometry) analysis, highlighting a fast biodistribution with a tβ1/2 of few minutes and a slow escretion (tα1/2 of 14.3 h). The in vitro cytotoxic activity of AuL12 was compared with the AuL12/HP-β-CD mixture against a panel of three human tumor cell lines (i.e., HeLa, KB and MCF7). Concerning the mechanism of action, we previously reported the proteasome-inhibitory activity of some our gold(III)-based compounds. In this work, we moved from the proteasome target to upstream of the important ubiquitin-proteasome pathway, testing the effects of AuL12 on the polyubiquitination reactions involving the Ub-activating (E1) and -conjugating (E2) enzymes.
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Affiliation(s)
- Marianna F Tomasello
- IBB-CNR, Istituto di Biostrutture e Bioimmagini, Sede Secondaria di Catania, Via Paolo Gaifami, 18 - 95126, Catania, Italy
| | - Chiara Nardon
- Università degli Studi di Padova, Dipartimento di Scienze Chimiche, Via F. Marzolo 1, 35131, Padova, Italy
| | - Valeria Lanza
- IBB-CNR, Istituto di Biostrutture e Bioimmagini, Sede Secondaria di Catania, Via Paolo Gaifami, 18 - 95126, Catania, Italy
| | - Giuseppe Di Natale
- IBB-CNR, Istituto di Biostrutture e Bioimmagini, Sede Secondaria di Catania, Via Paolo Gaifami, 18 - 95126, Catania, Italy
| | - Nicolò Pettenuzzo
- Università degli Studi di Padova, Dipartimento di Scienze Chimiche, Via F. Marzolo 1, 35131, Padova, Italy
| | - Stefano Salmaso
- Università degli Studi di Padova, Dipartimento di Scienze Farmaceutiche, Via F. Marzolo 5, 35131, Padova, Italy
| | - Danilo Milardi
- IBB-CNR, Istituto di Biostrutture e Bioimmagini, Sede Secondaria di Catania, Via Paolo Gaifami, 18 - 95126, Catania, Italy
| | - Paolo Caliceti
- Università degli Studi di Padova, Dipartimento di Scienze Farmaceutiche, Via F. Marzolo 5, 35131, Padova, Italy
| | - Giuseppe Pappalardo
- IBB-CNR, Istituto di Biostrutture e Bioimmagini, Sede Secondaria di Catania, Via Paolo Gaifami, 18 - 95126, Catania, Italy.
| | - Dolores Fregona
- Università degli Studi di Padova, Dipartimento di Scienze Chimiche, Via F. Marzolo 1, 35131, Padova, Italy.
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16
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Oliveri V, Lanza V, Milardi D, Viale M, Maric I, Sgarlata C, Vecchio G. Amino- and chloro-8-hydroxyquinolines and their copper complexes as proteasome inhibitors and antiproliferative agents. Metallomics 2017; 9:1439-1446. [DOI: 10.1039/c7mt00156h] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
5-Aminomethyl-8-hydroquinoline and its copper(ii) complex look very promising in inhibiting cell growth and proteasome activity.
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Affiliation(s)
- Valentina Oliveri
- Dipartimento di Scienze Chimiche
- Università degli Studi di Catania
- Viale A. Doria 6
- 95125 Catania
- Italy
| | - Valeria Lanza
- Istituto di Biostrutture e Bioimmagini
- CNR
- Via P. Gaifami 18
- 95126 Catania
- Italy
| | - Danilo Milardi
- Istituto di Biostrutture e Bioimmagini
- CNR
- Via P. Gaifami 18
- 95126 Catania
- Italy
| | - Maurizio Viale
- Ospedale Policlinico San Martino
- U.O.C. Bioterapie
- Lgo R. Benzi 10
- 16132, Genova
- Italy
| | - Irena Maric
- Ospedale Policlinico San Martino
- U.O.C. Bioterapie
- Lgo R. Benzi 10
- 16132, Genova
- Italy
| | - Carmelo Sgarlata
- Dipartimento di Scienze Chimiche
- Università degli Studi di Catania
- Viale A. Doria 6
- 95125 Catania
- Italy
| | - Graziella Vecchio
- Dipartimento di Scienze Chimiche
- Università degli Studi di Catania
- Viale A. Doria 6
- 95125 Catania
- Italy
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17
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Lanza V, Travaglia A, Malgieri G, Fattorusso R, Grasso G, Di Natale G, Zito V, Arena G, Milardi D, Rizzarelli E. Ubiquitin Associates with the N-Terminal Domain of Nerve Growth Factor: The Role of Copper(II) Ions. Chemistry 2016; 22:17767-17775. [PMID: 27759905 DOI: 10.1002/chem.201603650] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Indexed: 11/10/2022]
Abstract
Many biochemical pathways involving nerve growth factor (NGF), a neurotrophin with copper(II) binding abilities, are regulated by the ubiquitin (Ub) proteasome system. However, whether NGF binds Ub and the role played by copper(II) ions in modulating their interactions have not yet been investigated. Herein NMR spectroscopy, circular dichroism, ESI-MS, and titration calorimetry are employed to characterize the interactions of NGF with Ub. NGF1-14 , which is a short model peptide encompassing the first 14 N-terminal residues of NGF, binds the copper-binding regions of Ub (KD =8.6 10-5 m). Moreover, the peptide undergoes a random coil-polyproline type II helix structural conversion upon binding to Ub. Notably, copper(II) ions inhibit NGF1-14 /Ub interactions. Further experiments performed with the full-length NGF confirmed the existence of a copper(II)-dependent association between Ub and NGF and indicated that the N-terminal domain of NGF was a valuable paradigm that recapitulated many traits of the full-length protein.
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Affiliation(s)
- Valeria Lanza
- Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche, Via P. Gaifami18, 95126, Catania, Italy
| | - Alessio Travaglia
- Center for Neural Science, New York University, 4 Washington Pl, New York, NY, 10003, USA
| | - Gaetano Malgieri
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Seconda Università di Napoli, Via Vivaldi 43, 81100, Caserta, Italy
| | - Roberto Fattorusso
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Seconda Università di Napoli, Via Vivaldi 43, 81100, Caserta, Italy
| | - Giuseppe Grasso
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, V.le A.Doria 6, 95125, Catania, Italy
| | - Giuseppe Di Natale
- Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche, Via P. Gaifami18, 95126, Catania, Italy
| | - Valeria Zito
- Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche, Via P. Gaifami18, 95126, Catania, Italy
| | - Giuseppe Arena
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, V.le A.Doria 6, 95125, Catania, Italy
| | - Danilo Milardi
- Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche, Via P. Gaifami18, 95126, Catania, Italy
| | - Enrico Rizzarelli
- Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche, Via P. Gaifami18, 95126, Catania, Italy.,Dipartimento di Scienze Chimiche, Università degli Studi di Catania, V.le A.Doria 6, 95125, Catania, Italy
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18
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Santoro AM, Monaco I, Attanasio F, Lanza V, Pappalardo G, Tomasello MF, Cunsolo A, Rizzarelli E, De Luigi A, Salmona M, Milardi D. Copper(II) ions affect the gating dynamics of the 20S proteasome: a molecular and in cell study. Sci Rep 2016; 6:33444. [PMID: 27633879 PMCID: PMC5025780 DOI: 10.1038/srep33444] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 08/09/2016] [Indexed: 12/14/2022] Open
Abstract
Due to their altered metabolism cancer cells are more sensitive to proteasome inhibition or changes of copper levels than normal cells. Thus, the development of copper complexes endowed with proteasome inhibition features has emerged as a promising anticancer strategy. However, limited information is available about the exact mechanism by which copper inhibits proteasome. Here we show that Cu(II) ions simultaneously inhibit the three peptidase activities of isolated 20S proteasomes with potencies (IC50) in the micromolar range. Cu(II) ions, in cell-free conditions, neither catalyze red-ox reactions nor disrupt the assembly of the 20S proteasome but, rather, promote conformational changes associated to impaired channel gating. Notably, HeLa cells grown in a Cu(II)-supplemented medium exhibit decreased proteasome activity. This effect, however, was attenuated in the presence of an antioxidant. Our results suggest that if, on one hand, Cu(II)-inhibited 20S activities may be associated to conformational changes that favor the closed state of the core particle, on the other hand the complex effect induced by Cu(II) ions in cancer cells is the result of several concurring events including ROS-mediated proteasome flooding, and disassembly of the 26S proteasome into its 20S and 19S components.
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Affiliation(s)
- Anna Maria Santoro
- Istituto di Biostrutture e Bioimmagini - CNR Sede di Catania, Via P. Gaifami, 9- 95126 Catania, Italy
| | - Irene Monaco
- Istituto di Biostrutture e Bioimmagini - CNR Sede di Catania, Via P. Gaifami, 9- 95126 Catania, Italy
- Fondazione RiMed, Via Bandiera 11, 90133, Palermo, Italy
| | - Francesco Attanasio
- Istituto di Biostrutture e Bioimmagini - CNR Sede di Catania, Via P. Gaifami, 9- 95126 Catania, Italy
| | - Valeria Lanza
- Istituto di Biostrutture e Bioimmagini - CNR Sede di Catania, Via P. Gaifami, 9- 95126 Catania, Italy
| | - Giuseppe Pappalardo
- Istituto di Biostrutture e Bioimmagini - CNR Sede di Catania, Via P. Gaifami, 9- 95126 Catania, Italy
| | - Marianna Flora Tomasello
- Istituto di Biostrutture e Bioimmagini - CNR Sede di Catania, Via P. Gaifami, 9- 95126 Catania, Italy
| | - Alessandra Cunsolo
- Dipartimento di Scienze Chimiche, Università di Catania, Viale Andrea Doria 6, 95125 Catania, Italy
| | - Enrico Rizzarelli
- Istituto di Biostrutture e Bioimmagini - CNR Sede di Catania, Via P. Gaifami, 9- 95126 Catania, Italy
- Dipartimento di Scienze Chimiche, Università di Catania, Viale Andrea Doria 6, 95125 Catania, Italy
| | - Ada De Luigi
- IRCCS-Istituto di Ricerche Farmacologiche “Mario Negri”, Via Giuseppe La Masa 19, 20156, Milano, Italy
| | - Mario Salmona
- IRCCS-Istituto di Ricerche Farmacologiche “Mario Negri”, Via Giuseppe La Masa 19, 20156, Milano, Italy
| | - Danilo Milardi
- Istituto di Biostrutture e Bioimmagini - CNR Sede di Catania, Via P. Gaifami, 9- 95126 Catania, Italy
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19
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Magrì A, Tabbì G, Giuffrida A, Pappalardo G, Satriano C, Naletova I, Nicoletti VG, Attanasio F. Influence of the N-terminus acetylation of Semax, a synthetic analog of ACTH(4-10), on copper(II) and zinc(II) coordination and biological properties. J Inorg Biochem 2016; 164:59-69. [PMID: 27586814 DOI: 10.1016/j.jinorgbio.2016.08.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 08/23/2016] [Accepted: 08/25/2016] [Indexed: 10/21/2022]
Abstract
Semax is a heptapeptide (Met-Glu-His-Phe-Pro-Gly-Pro) that encompasses the sequence 4-7 of N-terminal domain of the adrenocorticotropic hormone and a C-terminal Pro-Gly-Pro tripeptide. N-terminal amino group acetylation (Ac-Semax) modulates the chemical and biological properties of parental peptide, modifying the ability of Semax to form complex species with Cu(II) ion. At physiological pH, the main complex species formed by Ac-Semax, [CuLH-2]2-, consists in a distorted CuN3O chromophore with a weak apical interaction of the methionine sulphur. Such a complex differs from the Cu(II)-Semax complex system, which exhibits a CuN4 chromophore. The reduced ligand field affects the [CuLH-2]2- formal redox potential, which is more positive than that of Cu(II)-Semax corresponding species. In the amino-free form, the resulting complex species is redox-stable and unreactive against ascorbic acid, unlike the acetylated form. Semax acetylation did not protect from Cu(II) induced toxicity on a SH-SY5Y neuroblastoma cell line, thus demonstrating the crucial role played by the free NH2 terminus in the cell protection. Since several brain diseases are associated either to Cu(II) or Zn(II) dyshomeostasis, here we characterized also the complex species formed by Zn(II) with Semax and Ac-Semax. Both peptides were able to form Zn(II) complex species with comparable strength. Confocal microscopy imaging confirmed that peptide group acetylation does not affect the Zn(II) influx in neuroblastoma cells. Moreover, a punctuate distribution of Zn(II) within the cells suggests a preferred subcellular localization that might explain the zinc toxic effect. A future perspective can be the use of Ac-Semax as ionophore in antibody drug conjugates to produce a dysmetallostasis in tumor cells.
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Affiliation(s)
- Antonio Magrì
- Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche (CNR), Via P. Gaifami 18, 95126 Catania, Italy
| | - Giovanni Tabbì
- Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche (CNR), Via P. Gaifami 18, 95126 Catania, Italy.
| | - Alessandro Giuffrida
- Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche (CNR), Via P. Gaifami 18, 95126 Catania, Italy
| | - Giuseppe Pappalardo
- Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche (CNR), Via P. Gaifami 18, 95126 Catania, Italy
| | - Cristina Satriano
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale A. Doria 6, 95125 Catania, Italy
| | - Irina Naletova
- Dipartimento di Scienze Biomediche, Università degli Studi di Catania, Viale A. Doria 6, 95125 Catania, Italy; Consorzio Interuniversitario C.I.R.C.S.M.B., Via C. Ulpiani 27, 70125 Bari, Italy
| | - Vincenzo G Nicoletti
- Dipartimento di Scienze Biomediche, Università degli Studi di Catania, Viale A. Doria 6, 95125 Catania, Italy
| | - Francesco Attanasio
- Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche (CNR), Via P. Gaifami 18, 95126 Catania, Italy.
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20
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Greenough MA, Ramírez Munoz A, Bush AI, Opazo CM. Metallo-pathways to Alzheimer's disease: lessons from genetic disorders of copper trafficking. Metallomics 2016; 8:831-9. [PMID: 27397642 DOI: 10.1039/c6mt00095a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Copper is an essential metal ion that provides catalytic function to numerous enzymes and also regulates neurotransmission and intracellular signaling. Conversely, a deficiency or excess of copper can cause chronic disease in humans. Menkes and Wilson disease are two rare heritable disorders of copper transport that are characterized by copper deficiency and copper overload, respectively. Changes to copper status are also a common feature of several neurodegenerative disorders including Alzheimer's disease (AD), Parkinson's disease (PD) and Amyotrophic lateral sclerosis (ALS). In the case of AD, which is characterized by brain copper depletion, changes in the distribution of copper has been linked with various aspects of the disease process; protein aggregation, defective protein degradation, oxidative stress, inflammation and mitochondrial dysfunction. Although AD is a multifactorial disease that is likely caused by a breakdown in multiple cellular pathways, copper and other metal ions such as iron and zinc play a central role in many of these cellular processes. Pioneering work by researchers who have studied relatively rare copper transport diseases has shed light on potential metal ion related disease mechanisms in other forms of neurodegeneration such as AD.
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Affiliation(s)
- M A Greenough
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, Victoria 3010, Australia.
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21
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Grasso G, Lanza V, Malgieri G, Fattorusso R, Pietropaolo A, Rizzarelli E, Milardi D. The insulin degrading enzyme activates ubiquitin and promotes the formation of K48 and K63 diubiquitin. Chem Commun (Camb) 2015; 51:15724-7. [PMID: 26364617 DOI: 10.1039/c5cc06786c] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
We report an ATP-dependent ubiquitin conjugation with IDE which, in turn, promotes Ub-Ub linkages in tube tests. We propose a novel function for IDE as a non-canonical ubiquitin activating enzyme.
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Affiliation(s)
- G Grasso
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, V.le A. Doria 6, 95125 Catania, Italy
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22
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A novel high resolution MS approach for the screening of 4-hydroxy-trans-2-nonenal sequestering agents. J Pharm Biomed Anal 2014; 91:108-18. [PMID: 24463041 DOI: 10.1016/j.jpba.2013.12.024] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2013] [Revised: 12/20/2013] [Accepted: 12/21/2013] [Indexed: 11/21/2022]
Abstract
An in vitro high resolution mass spectrometry (MS) method was set-up to test the ability of compounds, mixtures and extracts to inhibit protein carbonylation induced by reactive carbonyl species (RCS). The method consists of incubating the protein target (ubiquitin) with 4-hydroxy-trans-2-nonenal (HNE) in the presence and absence of the tested compound. After 24h of incubation, the reaction is stopped and the protein is analyzed by high-resolution MS. The extent of protein carbonylation is determined by measuring the area of the +11 multicharged peak of the HNE adduct in respect to the native form. The method was validated by measuring the effect of well-known RCS sequestering agents, namely aminoguanidine, pyridoxamine, hydralazine and carnosine, yielding a good reproducibility and the possibility to be automatable. All the compounds were found to dose-dependently inhibit the protein carbonylation with the following order of potency carnosine≈hydralazine≫aminoguanidine>pyridoxamine, as determined by calculating the UC50 values, that is the concentration required to inhibit ubiquitin carbonylation by 50%. A good correlation was found with the results obtained by measuring HNE consumption using an HPLC method optimized by a mobile phase set at pH 7.4, in order to stabilize the eluted adducts. The MS approach was then applied to test the effect of two selected natural extracts on protein carbonylation, i.e. green coffee bean extract and procyanidins from Vitis vinifera. In summary, this paper reports a validated and highly reproducible MS method to test the ability of pure compounds as well as natural extracts to act as protein carbonylation inhibitors.
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