1
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Wang C, Zheng M, Est C, Lawal R, Liang W, Korasick DA, Rau MJ, Saracco SA, Johnson V, Wang Y, White T, Li W, Zhang J, Gu X, Liu-Gontarek F. Production and characterization of homologous protoporphyrinogen IX oxidase (PPO) proteins: Evidence that small N-terminal amino acid changes do not impact protein function. PLoS One 2024; 19:e0311049. [PMID: 39325813 PMCID: PMC11426539 DOI: 10.1371/journal.pone.0311049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2024] [Accepted: 09/11/2024] [Indexed: 09/28/2024] Open
Abstract
Transgenic soybean, cotton, and maize tolerant to protoporphyrinogen IX oxidase (PPO)-inhibiting herbicides have been developed by introduction of a bacterial-derived PPO targeted into the chloroplast. PPO is a membrane-associated protein with an intrinsic tendency for aggregation, making expression, purification, and formulation at high concentrations difficult. In this study, transgenic PPO expressed in three crops was demonstrated to exhibit up to a 13 amino acid sequence difference in the N-terminus due to differential processing of the chloroplast transit peptide (CTP). Five PPO protein variants were produced in and purified from E. coli, each displaying equivalent immunoreactivity and functional activity, with values ranging from 193 to 266 nmol min-1 mg-1. Inclusion of an N-terminal 6xHis-tag or differential processing of the CTP peptide does not impact PPO functional activity. Additionally, structural modeling by Alphafold, ESMfold, and Openfold indicates that these short N-terminal extensions are disordered and predicted to not interfere with the mature PPO structure. These results support the view that safety studies on PPO from various crops can be performed from a single representative variant. Herein, we report a novel and robust method for large-scale production of PPO, enabling rapid production of more than 200 g of highly active PPO protein at 99% purity and low endotoxin contamination. We also present a formulation that allows for concentration of active PPO to > 75 mg/mL in a buffer suitable for mammalian toxicity studies.
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Affiliation(s)
- Cunxi Wang
- Regulatory Science, Bayer Crop Science, Chesterfield, Missouri, United States of America
| | - Meiying Zheng
- Regulatory Science, Bayer Crop Science, Chesterfield, Missouri, United States of America
| | - Chandler Est
- Regulatory Science, Bayer Crop Science, Chesterfield, Missouri, United States of America
| | - Remi Lawal
- Regulatory Science, Bayer Crop Science, Chesterfield, Missouri, United States of America
| | - Wenguang Liang
- Plant Biotechnology, Bayer Crop Science, Chesterfield, Missouri, United States of America
| | - David A. Korasick
- Small Molecules, Bayer Crop Science, Chesterfield, Missouri, United States of America
| | - Michael J. Rau
- Plant Biotechnology, Bayer Crop Science, Chesterfield, Missouri, United States of America
| | - Scott A. Saracco
- Regulatory Science, Bayer Crop Science, Chesterfield, Missouri, United States of America
| | - Virginia Johnson
- Regulatory Science, Bayer Crop Science, Chesterfield, Missouri, United States of America
| | - Yanfei Wang
- Regulatory Science, Bayer Crop Science, Chesterfield, Missouri, United States of America
| | - Tommi White
- Plant Biotechnology, Bayer Crop Science, Chesterfield, Missouri, United States of America
| | - Wenze Li
- Regulatory Science, Bayer Crop Science, Chesterfield, Missouri, United States of America
| | - Jun Zhang
- Regulatory Science, Bayer Crop Science, Chesterfield, Missouri, United States of America
| | - Xin Gu
- Regulatory Science, Bayer Crop Science, Chesterfield, Missouri, United States of America
| | - Flora Liu-Gontarek
- Regulatory Science, Bayer Crop Science, Chesterfield, Missouri, United States of America
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2
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Zhou Y, Li H, Tse E, Sun H. Metal-detection based techniques and their applications in metallobiology. Chem Sci 2024; 15:10264-10280. [PMID: 38994399 PMCID: PMC11234822 DOI: 10.1039/d4sc00108g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Accepted: 06/05/2024] [Indexed: 07/13/2024] Open
Abstract
Metals are essential for human health and play a crucial role in numerous biological processes and pathways. Gaining a deeper insight into these biological events will facilitate novel strategies for disease prevention, early detection, and personalized treatment. In recent years, there has been significant progress in the development of metal-detection based techniques from single cell metallome and proteome profiling to multiplex imaging, which greatly enhance our comprehension of the intricate roles played by metals in complex biological systems. This perspective summarizes the recent progress in advanced metal-detection based techniques and highlights successful applications in elucidating the roles of metals in biology and medicine. Technologies including machine learning that couple with single-cell analysis such as mass cytometry and their application in metallobiology, cancer biology and immunology are also emphasized. Finally, we provide insights into future prospects and challenges involved in metal-detection based techniques, with the aim of inspiring further methodological advancements and applications that are accessible to chemists, biologists, and clinicians.
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Affiliation(s)
- Ying Zhou
- Department of Chemistry, CAS-HKU Joint Laboratory of Metallomics for Health and Environment, The University of Hong Kong Pokfulam Road Hong Kong SAR P. R. China
| | - Hongyan Li
- Department of Chemistry, CAS-HKU Joint Laboratory of Metallomics for Health and Environment, The University of Hong Kong Pokfulam Road Hong Kong SAR P. R. China
| | - Eric Tse
- Department of Medicine, LKS Faculty of Medicine, The University of Hong Kong Pokfulam Road Hong Kong SAR P. R. China
| | - Hongzhe Sun
- Department of Chemistry, CAS-HKU Joint Laboratory of Metallomics for Health and Environment, The University of Hong Kong Pokfulam Road Hong Kong SAR P. R. China
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3
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Minoshima M, Reja SI, Hashimoto R, Iijima K, Kikuchi K. Hybrid Small-Molecule/Protein Fluorescent Probes. Chem Rev 2024; 124:6198-6270. [PMID: 38717865 DOI: 10.1021/acs.chemrev.3c00549] [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: 05/23/2024]
Abstract
Hybrid small-molecule/protein fluorescent probes are powerful tools for visualizing protein localization and function in living cells. These hybrid probes are constructed by diverse site-specific chemical protein labeling approaches through chemical reactions to exogenous peptide/small protein tags, enzymatic post-translational modifications, bioorthogonal reactions for genetically incorporated unnatural amino acids, and ligand-directed chemical reactions. The hybrid small-molecule/protein fluorescent probes are employed for imaging protein trafficking, conformational changes, and bioanalytes surrounding proteins. In addition, fluorescent hybrid probes facilitate visualization of protein dynamics at the single-molecule level and the defined structure with super-resolution imaging. In this review, we discuss development and the bioimaging applications of fluorescent probes based on small-molecule/protein hybrids.
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Affiliation(s)
- Masafumi Minoshima
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka 5650871, Japan
| | - Shahi Imam Reja
- Immunology Frontier Research Center, Osaka University, 2-1, Yamadaoka, Suita, Osaka 5650871, Japan
| | - Ryu Hashimoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka 5650871, Japan
| | - Kohei Iijima
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka 5650871, Japan
| | - Kazuya Kikuchi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka 5650871, Japan
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4
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Tanga S, Hota A, Karmakar A, Banerjee P, Maji B. Cysteine-independent CRISPR-Associated Protein Labeling for Presentation and Co-delivery of Molecules Toward Genetic and Epigenetic Regulations. Chembiochem 2024; 25:e202400149. [PMID: 38530114 DOI: 10.1002/cbic.202400149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Revised: 03/20/2024] [Accepted: 03/26/2024] [Indexed: 03/27/2024]
Abstract
Labeling of CRISPR (Clustered Regularly Interspaced Short Palindromic Repeats) associated proteins (Cas) remains an immense challenge for their genome engineering applications. To date, cysteine-mediated bioconjugation is the most efficient strategy for labeling Cas proteins. However, introducing a cysteine residue in the protein at the right place might be challenging without perturbing the enzymatic activity. We report a method that does not require cysteine residues for small molecule presentation on the CRISPR-associated protein SpCas9 for in vitro protein detection, probing cellular protein expression, and nuclear co-delivery of molecules in mammalian cells. We repurposed a simple protein purification tag His6 peptide for non-covalent labeling of molecules on the CRISPR enzyme SpCas9. The small molecule labeling enabled us to rapidly detect SpCas9 in a biochemical assay. We demonstrate that small molecule labeling can be utilized for probing bacterial protein expression in realtime. Furthermore, we coupled SpCas9's nuclear-targeting ability in co-delivering the presenting small molecules to the mammalian cell nucleus for prospective genome engineering applications. Furthermore, we demonstrate that the method can be generalized to label oligonucleotides for multiplexing CRISPR-based genome editing and template-mediated DNA repair applications. This work paves the way for genomic loci-specific bioactive small molecule and oligonucleotide co-delivery toward genetic and epigenetic regulations.
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Affiliation(s)
- Sadiya Tanga
- Ashoka University, Department of Chemistry, Rajiv Gandhi Education City, Sonipat, Haryana, 131029
- Bose Institute, Department of Biological Sciences, EN 80, Sector V, Bidhannagar, Kolkata, 700091, West Bengal
| | - Arpita Hota
- Bose Institute, Department of Biological Sciences, EN 80, Sector V, Bidhannagar, Kolkata, 700091, West Bengal
| | - Arkadeep Karmakar
- Bose Institute, Department of Biological Sciences, EN 80, Sector V, Bidhannagar, Kolkata, 700091, West Bengal
| | - Paramita Banerjee
- S N Bose National Centre for Basic Science, JD Block, Sector 3, Bidhannagar, Kolkata, 700106, West Bengal
| | - Basudeb Maji
- Bose Institute, Department of Biological Sciences, EN 80, Sector V, Bidhannagar, Kolkata, 700091, West Bengal
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5
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Gao W, Li Y, Zhang X, Qiao M, Ji Y, Zheng J, Gao L, Yuan S, Huang H. DNA-Directed Assembly of Hierarchical MOF-Cellulose Nanofiber Microbioreactors with "Branch-Fruit" Structures. NANO LETTERS 2024; 24:3404-3412. [PMID: 38451852 DOI: 10.1021/acs.nanolett.3c05152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/09/2024]
Abstract
Assembling metal-organic frameworks (MOFs) into ordered multidimensional porous superstructures promises the encapsulation of enzymes for heterogeneous biocatalysts. However, the full potential of this approach has been limited by the poor stability of enzymes and the uncontrolled assembly of MOF nanoparticles onto suitable supports. In this study, a novel and exceptionally robust Ni-imidazole-based MOF was synthesized in water at room temperature, enabling in situ enzyme encapsulation. Based on this MOF platform, we developed a DNA-directed assembly strategy to achieve the uniform placement of MOF nanoparticles onto bacterial cellulose nanofibers, resulting in a distinctive "branch-fruit" structure. The resulting hybrid materials demonstrated remarkable versatility across various catalytic systems, accommodating natural enzymes, nanoenzymes, and multienzyme cascades, thus showcasing enormous potential as universal microbioreactors. Furthermore, the hierarchical composites facilitated rapid diffusion of the bulky substrate while maintaining the enzyme stability, with ∼3.5-fold higher relative activity compared to the traditional enzyme@MOF immobilized in bacterial cellulose nanofibers.
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Affiliation(s)
- Wanning Gao
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, China
| | - Youcong Li
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xing Zhang
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, China
| | - Meng Qiao
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, China
| | - Yuan Ji
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, China
| | - Jie Zheng
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, China
| | - Lei Gao
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Shuai Yuan
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - He Huang
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, China
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6
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Coverdale JPC, Polepalli S, Arruda MAZ, da Silva ABS, Stewart AJ, Blindauer CA. Recent Advances in Metalloproteomics. Biomolecules 2024; 14:104. [PMID: 38254704 PMCID: PMC10813065 DOI: 10.3390/biom14010104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 11/17/2023] [Accepted: 01/10/2024] [Indexed: 01/24/2024] Open
Abstract
Interactions between proteins and metal ions and their complexes are important in many areas of the life sciences, including physiology, medicine, and toxicology. Despite the involvement of essential elements in all major processes necessary for sustaining life, metalloproteomes remain ill-defined. This is not only owing to the complexity of metalloproteomes, but also to the non-covalent character of the complexes that most essential metals form, which complicates analysis. Similar issues may also be encountered for some toxic metals. The review discusses recently developed approaches and current challenges for the study of interactions involving entire (sub-)proteomes with such labile metal ions. In the second part, transition metals from the fourth and fifth periods are examined, most of which are xenobiotic and also tend to form more stable and/or inert complexes. A large research area in this respect concerns metallodrug-protein interactions. Particular attention is paid to separation approaches, as these need to be adapted to the reactivity of the metal under consideration.
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Affiliation(s)
- James P. C. Coverdale
- School of Pharmacy, Institute of Clinical Sciences, University of Birmingham, Edgbaston B15 2TT, UK;
| | | | - Marco A. Z. Arruda
- Institute of Chemistry, Department of Analytical Chemistry, Universidade Estadual de Campinas, Campinas 13083-970, Brazil; (M.A.Z.A.); (A.B.S.d.S.)
| | - Ana B. Santos da Silva
- Institute of Chemistry, Department of Analytical Chemistry, Universidade Estadual de Campinas, Campinas 13083-970, Brazil; (M.A.Z.A.); (A.B.S.d.S.)
| | - Alan J. Stewart
- School of Medicine, University of St. Andrews, St Andrews KY16 9TF, UK
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7
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Liu D, Pan L, Zhai H, Qiu HJ, Sun Y. Virus tracking technologies and their applications in viral life cycle: research advances and future perspectives. Front Immunol 2023; 14:1204730. [PMID: 37334362 PMCID: PMC10272434 DOI: 10.3389/fimmu.2023.1204730] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 05/22/2023] [Indexed: 06/20/2023] Open
Abstract
Viruses are simple yet highly pathogenic microorganisms that parasitize within cells and pose serious threats to the health, economic development, and social stability of both humans and animals. Therefore, it is crucial to understand the dynamic mechanism of virus infection in hosts. One effective way to achieve this is through virus tracking technology, which utilizes fluorescence imaging to track the life processes of virus particles in living cells in real-time, providing a comprehensively and detailed spatiotemporal dynamic process and mechanism of virus infection. This paper provides a broad overview of virus tracking technology, including the selection of fluorescent labels and virus labeling components, the development of imaging microscopes, and its applications in various virus studies. Additionally, we discuss the possibilities and challenges of its future development, offering theoretical guidance and technical support for effective prevention and control of the viral disease outbreaks and epidemics.
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Affiliation(s)
| | | | | | - Hua-Ji Qiu
- *Correspondence: Hua-Ji Qiu, ; Yuan Sun,
| | - Yuan Sun
- *Correspondence: Hua-Ji Qiu, ; Yuan Sun,
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8
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Wang H, Hu L, Li H, Lai YT, Wei X, Xu X, Cao Z, Cao H, Wan Q, Chang YY, Xu A, Zhou Q, Jiang G, He ML, Sun H. Mitochondrial ATP synthase as a direct molecular target of chromium(III) to ameliorate hyperglycaemia stress. Nat Commun 2023; 14:1738. [PMID: 36977671 PMCID: PMC10050403 DOI: 10.1038/s41467-023-37351-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 03/14/2023] [Indexed: 03/30/2023] Open
Abstract
Chromium(III) is extensively used as a supplement for muscle development and the treatment of diabetes mellitus. However, its mode of action, essentiality, and physiological/pharmacological effects have been a subject of scientific debate for over half a century owing to the failure in identifying the molecular targets of Cr(III). Herein, by integrating fluorescence imaging with a proteomic approach, we visualized the Cr(III) proteome being mainly localized in the mitochondria, and subsequently identified and validated eight Cr(III)-binding proteins, which are predominately associated with ATP synthesis. We show that Cr(III) binds to ATP synthase at its beta subunit via the catalytic residues of Thr213/Glu242 and the nucleotide in the active site. Such a binding suppresses ATP synthase activity, leading to the activation of AMPK, improving glucose metabolism, and rescuing mitochondria from hyperglycaemia-induced fragmentation. The mode of action of Cr(III) in cells also holds true in type II diabetic male mice. Through this study, we resolve the long-standing question of how Cr(III) ameliorates hyperglycaemia stress at the molecular level, opening a new horizon for further exploration of the pharmacological effects of Cr(III).
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Affiliation(s)
- Haibo Wang
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, CAS-HKU Joint Laboratory of Metallomics on Health and Environment, The University of Hong Kong, Pok Fu Lam, Hong Kong S.A.R., P.R. China
| | - Ligang Hu
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, CAS-HKU Joint Laboratory of Metallomics on Health and Environment, The University of Hong Kong, Pok Fu Lam, Hong Kong S.A.R., P.R. China
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, P.R. China
| | - Hongyan Li
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, CAS-HKU Joint Laboratory of Metallomics on Health and Environment, The University of Hong Kong, Pok Fu Lam, Hong Kong S.A.R., P.R. China
| | - Yau-Tsz Lai
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, CAS-HKU Joint Laboratory of Metallomics on Health and Environment, The University of Hong Kong, Pok Fu Lam, Hong Kong S.A.R., P.R. China
| | - Xueying Wei
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, CAS-HKU Joint Laboratory of Metallomics on Health and Environment, The University of Hong Kong, Pok Fu Lam, Hong Kong S.A.R., P.R. China
| | - Xiaohan Xu
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, CAS-HKU Joint Laboratory of Metallomics on Health and Environment, The University of Hong Kong, Pok Fu Lam, Hong Kong S.A.R., P.R. China
| | - Zhenkun Cao
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, CAS-HKU Joint Laboratory of Metallomics on Health and Environment, The University of Hong Kong, Pok Fu Lam, Hong Kong S.A.R., P.R. China
| | - Huiming Cao
- Institute of Environment and Health, Jianghan University, Wuhan, 430056, P.R. China
| | - Qianya Wan
- Department of Biomedical Science, City University of Hong Kong, Kowloon Tong, Hong Kong, P.R. China
| | - Yuen-Yan Chang
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, CAS-HKU Joint Laboratory of Metallomics on Health and Environment, The University of Hong Kong, Pok Fu Lam, Hong Kong S.A.R., P.R. China
| | - Aimin Xu
- Department of Pharmacology and Pharmacy, and State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, 21 Sassoon Road, Pok Fu Lam, Hong Kong, P.R. China
| | - Qunfang Zhou
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, P.R. China
| | - Guibin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, P.R. China
| | - Ming-Liang He
- Department of Biomedical Science, City University of Hong Kong, Kowloon Tong, Hong Kong, P.R. China
| | - Hongzhe Sun
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, CAS-HKU Joint Laboratory of Metallomics on Health and Environment, The University of Hong Kong, Pok Fu Lam, Hong Kong S.A.R., P.R. China.
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9
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Pu C, Huang Z, Huang L, Shen Q, Yu C. Label‐Free Fluorescence Turn‐On Detection of Histidine‐Tagged Proteins Based on Intramolecular Rigidification Induced Emission. ChemistrySelect 2023. [DOI: 10.1002/slct.202204406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Affiliation(s)
- Chibin Pu
- Department of Gastroenterology Zhongda Hospital School of Medicine Southeast University 87 Dingjiaqiao Road 210009 Nanjing P. R. China
| | - Zhongxi Huang
- Key Laboratory of Flexible Electronics (KLOFE) & School of Flexible Electronics (Future Technologies) (SoFE) Nanjing Tech University 30 South Puzhu Road 211816 Nanjing P. R. China
| | - Lihua Huang
- Key Laboratory of Flexible Electronics (KLOFE) & School of Flexible Electronics (Future Technologies) (SoFE) Nanjing Tech University 30 South Puzhu Road 211816 Nanjing P. R. China
| | - Qian Shen
- Key Laboratory of Flexible Electronics (KLOFE) & School of Flexible Electronics (Future Technologies) (SoFE) Nanjing Tech University 30 South Puzhu Road 211816 Nanjing P. R. China
| | - Changmin Yu
- Key Laboratory of Flexible Electronics (KLOFE) & School of Flexible Electronics (Future Technologies) (SoFE) Nanjing Tech University 30 South Puzhu Road 211816 Nanjing P. R. China
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10
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Abstract
The genetically encoded fluorescent sensors convert chemical and physical signals into light. They are powerful tools for the visualisation of physiological processes in living cells and freely moving animals. The fluorescent protein is the reporter module of a genetically encoded biosensor. In this study, we first review the history of the fluorescent protein in full emission spectra on a structural basis. Then, we discuss the design of the genetically encoded biosensor. Finally, we briefly review several major types of genetically encoded biosensors that are currently widely used based on their design and molecular targets, which may be useful for the future design of fluorescent biosensors.
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Affiliation(s)
- Minji Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, No. 3663 Zhong Shan Road North, Shanghai, 200062, China
| | - Yifan Da
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, No. 3663 Zhong Shan Road North, Shanghai, 200062, China
| | - Yang Tian
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, No. 3663 Zhong Shan Road North, Shanghai, 200062, China
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11
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Loughran ST, Bree RT, Walls D. Poly-Histidine-Tagged Protein Purification Using Immobilized Metal Affinity Chromatography (IMAC). Methods Mol Biol 2023; 2699:193-223. [PMID: 37647000 DOI: 10.1007/978-1-0716-3362-5_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
His-tagging is the most widespread and versatile strategy used to purify recombinant proteins for biochemical and structural studies. Recombinant DNA methods are first used to engineer the addition of a short tract of poly-histidine tag (His-tag) to the N-terminus or C-terminus of a target protein. The His-tag is then exploited to enable purification of the "tagged" protein by immobilized metal affinity chromatography (IMAC). In this chapter, we describe efficient procedures for the isolation of highly purified His-tagged target proteins from an Escherichia coli host using IMAC in a bind-wash-elute strategy that can be performed under both native and denaturing conditions.
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Affiliation(s)
- Sinéad T Loughran
- Department of Life and Health Sciences, School of Health and Science, Dundalk Institute of Technology, Dundalk, Louth, Ireland.
| | - Ronan T Bree
- Department of Life and Health Sciences, School of Health and Science, Dundalk Institute of Technology, Dundalk, Louth, Ireland
| | - Dermot Walls
- School of Biotechnology, Dublin City University, Dublin, Ireland
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12
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Wang C, Bean GJ, Chen CJ, Kessenich CR, Peng J, Visconti NR, Milligan JS, Moore RG, Tan J, Edrington TC, Li B, Giddings KS, Bowen D, Luo J, Ciche T, Moar WJ. Safety assessment of Mpp75Aa1.1, a new ETX_MTX2 protein from Brevibacillus laterosporus that controls western corn rootworm. PLoS One 2022; 17:e0274204. [PMID: 36074780 PMCID: PMC9455866 DOI: 10.1371/journal.pone.0274204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 08/23/2022] [Indexed: 11/24/2022] Open
Abstract
The recently discovered insecticidal protein Mpp75Aa1.1 from Brevibacillus laterosporus is a member of the ETX_MTX family of beta-pore forming proteins (β-PFPs) expressed in genetically modified (GM) maize to control western corn rootworm (WCR; Diabrotica virgifera virgifera LeConte). In this manuscript, bioinformatic analysis establishes that although Mpp75Aa1.1 shares varying degrees of similarity to members of the ETX_MTX2 protein family, it is unlikely to have any allergenic, toxic, or otherwise adverse biological effects. The safety of Mpp75Aa1.1 is further supported by a weight of evidence approach including evaluation of the history of safe use (HOSU) of ETX_MTX2 proteins and Breviballus laterosporus. Comparisons between purified Mpp75Aa1.1 protein and a poly-histidine-tagged (His-tagged) variant of the Mpp75Aa1.1 protein demonstrate that both forms of the protein are heat labile at temperatures at or above 55°C, degraded by gastrointestinal proteases within 0.5 min, and have no adverse effects in acute mouse oral toxicity studies at a dose level of 1920 or 2120 mg/kg body weight. These results support the use of His-tagged proteins as suitable surrogates for assessing the safety of their non-tagged parent proteins. Taken together, we report that Mpp75Aa1.1 is the first ETX-MTX2 insecticidal protein from B. laterosporus and displays a similar safety profile as typical Cry proteins from Bacillus thuringiensis.
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Affiliation(s)
- Cunxi Wang
- Bayer Crop Science, Chesterfield, Missouri, United States of America
| | - Gregory J. Bean
- Bayer Crop Science, Chesterfield, Missouri, United States of America
| | - Chun Ju Chen
- Bayer Crop Science, Chesterfield, Missouri, United States of America
| | | | - Jiexin Peng
- Bayer Crop Science, Chesterfield, Missouri, United States of America
| | | | - Jason S. Milligan
- Bayer Crop Science, Chesterfield, Missouri, United States of America
| | - Robert G. Moore
- Bayer Crop Science, Chesterfield, Missouri, United States of America
| | - Jianguo Tan
- Bayer Crop Science, Chesterfield, Missouri, United States of America
| | | | - Bin Li
- Bayer Crop Science, Chesterfield, Missouri, United States of America
| | - Kara S. Giddings
- Bayer Crop Science, Chesterfield, Missouri, United States of America
| | - David Bowen
- Bayer Crop Science, Chesterfield, Missouri, United States of America
| | - Jinhua Luo
- Bayer Crop Science, Chesterfield, Missouri, United States of America
| | - Todd Ciche
- Bayer Crop Science, Chesterfield, Missouri, United States of America
| | - William J. Moar
- Bayer Crop Science, Chesterfield, Missouri, United States of America
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13
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Tanaka YK, Shimazaki S, Fukumoto Y, Ogra Y. Detection of Histidine-Tagged Protein in Escherichia coli by Single-Cell Inductively Coupled Plasma-Mass Spectrometry. Anal Chem 2022; 94:7952-7959. [PMID: 35617709 DOI: 10.1021/acs.analchem.2c00774] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We have developed a rapid and precise quantification method for a histidine (His)-tagged recombinant protein produced in Escherichia coli (E. coli) by single-cell inductively coupled plasma-mass spectrometry (SC-ICP-MS). Plasmid vector containing enhanced green fluorescent protein (EGFP) or red fluorescent protein (mCherry) gene fused with His-tag was transformed into E. coli. The transformed E. coli was exposed to nickel (Ni) chloride or cobalt (Co) chloride for labeling His-tag with the Ni or Co ion. Then, E. coli was analyzed by SC-ICP-MS to determine the amount of EGFP or mCherry protein on the basis of the signal of Ni or Co bound to His-tag. By comparing Ni and Co contents in E. coli expressing His-tagged mCherry with those in nontagged mCherry, the specific binding of Co to His-tag was more clearly detected than that of Ni. The Co contents were increased until 6 h after the protein induction, and this observation was coincident with the increases in fluorescence intensity of EGFP or mCherry measured by a flow cytometer. However, the Co contents were decreased for EGFP and kept at a constant level for mCherry from 6 to 24 h despite the continuous increase in the fluorescence intensity through incubation. The fluorescent proteins were mainly recovered in the insoluble fraction 24 h after the induction. This can be explained by the fact that the overexpressed fluorescent proteins with His-tag are transferred into inclusion bodies, which hampers the binding of the fluorescent proteins to the Co ion. SC-ICP-MS can be a useful technique to precisely quantify soluble recombinant proteins in E. coli without the extraction and purification process.
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Affiliation(s)
- Yu-Ki Tanaka
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo, Chiba 260-8675, Japan
| | - Shunsuke Shimazaki
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo, Chiba 260-8675, Japan
| | - Yasunori Fukumoto
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo, Chiba 260-8675, Japan
| | - Yasumitsu Ogra
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo, Chiba 260-8675, Japan
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14
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Shen JD, Cai X, Liu ZQ, Zheng YG. High Throughput Screening of Signal Peptide Library with Novel Fluorescent Probe. Chembiochem 2022; 23:e202100523. [PMID: 35470527 DOI: 10.1002/cbic.202100523] [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: 09/30/2021] [Revised: 04/14/2022] [Indexed: 11/06/2022]
Abstract
Nitrile hydratase (NHase) is an excellent bio-catalyst for the synthesis of amide compounds, was composed of two heterologous subunits. However, the secretory expression of NHase has been difficult to achieve because of its complex expression mechanism. In this work, a novel fluorescent probe Rho-IDA-CoII was synthesized by the one-pot method. Rho-IDA-CoII could specifically label His-tagged proteins in vitro specifically, such as staining in-gel, western blot and ELISA. Furthermore, Rho-IDA-CoII combined with dot blot could quantitatively detect His-tagged proteins between 1 - 10 pmol and perform high-throughput screening for the NHase signal peptide library. The recombinant Bacillus subtilis WB800/phoB-HBA with the extracellular expression of NHase was screened from ca. 6500 clones. After optimization of fermentation conditions, the NHase activity in the culture supernatant reached to 17.34 ± 0.16 U/mL. It was the first time to express secretory NHase in Bacillus subtilis successfully.
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Affiliation(s)
- Ji-Dong Shen
- Zhejiang University of Technology, College of biotechnology and bioengineering, CHINA
| | - Xue Cai
- Zhejiang University of Technology, college of biotechnology and bioengineering, CHINA
| | - Zhi-Qiang Liu
- Zhejiang University of Technology, College of Biotechnology and Bioengineering, Chaowang Rd. 18#, 3100114, Hangzhou, CHINA
| | - Yu-Guo Zheng
- Zhejiang University of Technology, college of biotechnology and bioengineering, CHINA
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15
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Habibi N, Mauser A, Ko Y, Lahann J. Protein Nanoparticles: Uniting the Power of Proteins with Engineering Design Approaches. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2104012. [PMID: 35077010 PMCID: PMC8922121 DOI: 10.1002/advs.202104012] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 12/12/2021] [Indexed: 05/16/2023]
Abstract
Protein nanoparticles, PNPs, have played a long-standing role in food and industrial applications. More recently, their potential in nanomedicine has been more widely pursued. This review summarizes recent trends related to the preparation, application, and chemical construction of nanoparticles that use proteins as major building blocks. A particular focus has been given to emerging trends related to applications in nanomedicine, an area of research where PNPs are poised for major breakthroughs as drug delivery carriers, particle-based therapeutics or for non-viral gene therapy.
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Affiliation(s)
- Nahal Habibi
- Biointerfaces InstituteDepartment of Chemical EngineeringUniversity of MichiganAnn ArborMI48109USA
| | - Ava Mauser
- Biointerfaces InstituteDepartment of Biomedical EngineeringUniversity of MichiganAnn ArborMI48109USA
| | - Yeongun Ko
- Biointerfaces InstituteDepartment of Chemical EngineeringUniversity of MichiganAnn ArborMI48109USA
| | - Joerg Lahann
- Biointerfaces InstituteDepartments of Chemical EngineeringMaterial Science and EngineeringBiomedical Engineeringand Macromolecular Science and EngineeringUniversity of MichiganAnn ArborMI48109USA
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16
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Abstract
Metals are essential components in life processes and participate in many important biological processes. Dysregulation of metal homeostasis is correlated with many diseases. Metals are also frequently incorporated into diagnosis and therapeutics. Understanding of metal homeostasis under (patho)physiological conditions and the molecular mechanisms of action of metallodrugs in biological systems has positive impacts on human health. As an emerging interdisciplinary area of research, metalloproteomics involves investigating metal-protein interactions in biological systems at a proteome-wide scale, has received growing attention, and has been implemented into metal-related research. In this review, we summarize the recent advances in metalloproteomics methodologies and applications. We also highlight emerging single-cell metalloproteomics, including time-resolved inductively coupled plasma mass spectrometry, mass cytometry, and secondary ion mass spectrometry. Finally, we discuss future perspectives in metalloproteomics, aiming to attract more original research to develop more advanced methodologies, which could be utilized rapidly by biochemists or biologists to expand our knowledge of how metal functions in biology and medicine. Expected final online publication date for the Annual Review of Biochemistry, Volume 91 is June 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.
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Affiliation(s)
- Ying Zhou
- Department of Chemistry and CAS-HKU Joint Laboratory of Metallomics on Health and Environment, University of Hong Kong, Hong Kong SAR, China; ,
| | - Hongyan Li
- Department of Chemistry and CAS-HKU Joint Laboratory of Metallomics on Health and Environment, University of Hong Kong, Hong Kong SAR, China; ,
| | - Hongzhe Sun
- Department of Chemistry and CAS-HKU Joint Laboratory of Metallomics on Health and Environment, University of Hong Kong, Hong Kong SAR, China; ,
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17
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Glymenaki E, Kandyli M, Apostolidou CP, Kokotidou C, Charalambidis G, Nikoloudakis E, Panagiotakis S, Koutserinaki E, Klontza V, Michail P, Charisiadis A, Yannakopoulou K, Mitraki A, Coutsolelos AG. Design and Synthesis of Porphyrin-Nitrilotriacetic Acid Dyads with Potential Applications in Peptide Labeling through Metallochelate Coupling. ACS OMEGA 2022; 7:1803-1818. [PMID: 35071874 PMCID: PMC8771699 DOI: 10.1021/acsomega.1c05013] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 11/30/2021] [Indexed: 05/31/2023]
Abstract
The need to detect and monitor biomolecules, especially within cells, has led to the emerging growth of fluorescent probes. One of the most commonly used labeling techniques for this purpose is reversible metallochelate coupling via a nitrilotriacetic acid (NTA) moiety. In this study, we focus on the synthesis and characterization of three new porphyrin-NTA dyads, TPP-Lys-NTA, TPP-CC-Lys-NTA, and Py 3 P-Lys-NTA composed of a porphyrin derivative covalently connected with a modified nitrilotriacetic acid chelate ligand (NTA), for possible metallochelate coupling with Ni2+ ions and histidine sequences. Emission spectroscopy studies revealed that all of the probes are able to coordinate with Ni2+ ions and consequently can be applied as fluorophores in protein/peptide labeling applications. Using two different histidine-containing peptides as His6-tag mimic, we demonstrated that the porphyrin-NTA hybrids are able to coordinate efficiently with the peptides through the metallochelate coupling process. Moving one step forward, we examined the ability of these porphyrin-peptide complexes to penetrate and accumulate in cancer cells, exploring the potential utilization of our system as anticancer agents.
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Affiliation(s)
- Eleni Glymenaki
- Department
of Chemistry, University of Crete, Laboratory
of Bioinorganic Chemistry, Voutes Campus, Heraklion 70013, Crete, Greece
| | - Maria Kandyli
- Department
of Chemistry, University of Crete, Laboratory
of Bioinorganic Chemistry, Voutes Campus, Heraklion 70013, Crete, Greece
| | - Chrysanthi Pinelopi Apostolidou
- Department
of Materials Science and Technology and Institute of Electronic Structure
and Laser (I.E.S.L.), Foundation for Research and Technology-Hellas
(FO.R.T.H.), University of Crete, Vassilika Vouton, Heraklion 70013, Crete, Greece
| | - Chrysoula Kokotidou
- Department
of Materials Science and Technology and Institute of Electronic Structure
and Laser (I.E.S.L.), Foundation for Research and Technology-Hellas
(FO.R.T.H.), University of Crete, Vassilika Vouton, Heraklion 70013, Crete, Greece
| | - Georgios Charalambidis
- Department
of Chemistry, University of Crete, Laboratory
of Bioinorganic Chemistry, Voutes Campus, Heraklion 70013, Crete, Greece
| | - Emmanouil Nikoloudakis
- Department
of Chemistry, University of Crete, Laboratory
of Bioinorganic Chemistry, Voutes Campus, Heraklion 70013, Crete, Greece
| | - Stylianos Panagiotakis
- Department
of Chemistry, University of Crete, Laboratory
of Bioinorganic Chemistry, Voutes Campus, Heraklion 70013, Crete, Greece
- Institute
of Nanoscience and Nanotechnology, National
Center for Scientific Research “Demokritos”, Aghia Paraskevi, Attiki 15341, Greece
| | - Eleftheria Koutserinaki
- Department
of Chemistry, University of Crete, Laboratory
of Bioinorganic Chemistry, Voutes Campus, Heraklion 70013, Crete, Greece
| | - Vithleem Klontza
- Department
of Chemistry, University of Crete, Laboratory
of Bioinorganic Chemistry, Voutes Campus, Heraklion 70013, Crete, Greece
| | - Panagiota Michail
- Department
of Chemistry, University of Crete, Laboratory
of Bioinorganic Chemistry, Voutes Campus, Heraklion 70013, Crete, Greece
| | - Asterios Charisiadis
- Department
of Chemistry, University of Crete, Laboratory
of Bioinorganic Chemistry, Voutes Campus, Heraklion 70013, Crete, Greece
| | - Konstantina Yannakopoulou
- Institute
of Nanoscience and Nanotechnology, National
Center for Scientific Research “Demokritos”, Aghia Paraskevi, Attiki 15341, Greece
| | - Anna Mitraki
- Department
of Materials Science and Technology and Institute of Electronic Structure
and Laser (I.E.S.L.), Foundation for Research and Technology-Hellas
(FO.R.T.H.), University of Crete, Vassilika Vouton, Heraklion 70013, Crete, Greece
| | - Athanassios G. Coutsolelos
- Department
of Chemistry, University of Crete, Laboratory
of Bioinorganic Chemistry, Voutes Campus, Heraklion 70013, Crete, Greece
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18
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Griffith DM, Li H, Werrett MV, Andrews PC, Sun H. Medicinal chemistry and biomedical applications of bismuth-based compounds and nanoparticles. Chem Soc Rev 2021; 50:12037-12069. [PMID: 34533144 DOI: 10.1039/d0cs00031k] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Bismuth as a relatively non-toxic and inexpensive metal with exceptional properties has numerous biomedical applications. Bismuth-based compounds are used extensively as medicines for the treatment of gastrointestinal disorders including dyspepsia, gastric ulcers and H. pylori infections. Recently, its medicinal application was further extended to potential treatments of viral infection, multidrug resistant microbial infections, cancer and also imaging, drug delivery and biosensing. In this review we have highlighted the unique chemistry and biological chemistry of bismuth-209 as a prelude to sections covering the unique antibacterial activity of bismuth including a description of research undertaken to date to elucidate key molecular mechanisms of action against H. pylori, the development of novel compounds to treat infection from microbes beyond H. pylori and the significant role bismuth compounds can play as resistance breakers. Furthermore we have provided an account of the potential therapeutic application of bismuth-213 in targeted alpha therapy as well as a summary of the biomedical applications of bismuth-based nanoparticles and composites. Ultimately this review aims to provide the state of the art, highlight the untapped biomedical potential of bismuth and encourage original contributions to this exciting and important field.
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Affiliation(s)
- Darren M Griffith
- Department of Chemistry, Royal College of Surgeons in Ireland, 123 St. Stephens Green, Dublin 2, Ireland.,SSPC, Synthesis and Solid State Pharmaceutical Centre, Ireland
| | - Hongyan Li
- Department of Chemistry and CAS-HKU Joint Laboratory of Metallomics for Health and Environment, The University of Hong Kong, Pokfulam Road, Hong Kong, China.
| | | | - Philip C Andrews
- School of Chemistry, Monash University, Melbourne, VIC, Australia
| | - Hongzhe Sun
- Department of Chemistry and CAS-HKU Joint Laboratory of Metallomics for Health and Environment, The University of Hong Kong, Pokfulam Road, Hong Kong, China.
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19
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Hu X, Li H, Ip TKY, Cheung YF, Koohi-Moghadam M, Wang H, Yang X, Tritton DN, Wang Y, Wang Y, Wang R, Ng KM, Naranmandura H, Tse EWC, Sun H. Arsenic trioxide targets Hsp60, triggering degradation of p53 and survivin. Chem Sci 2021; 12:10893-10900. [PMID: 34476069 PMCID: PMC8372542 DOI: 10.1039/d1sc03119h] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 07/15/2021] [Indexed: 12/12/2022] Open
Abstract
The mechanisms of action of arsenic trioxide (ATO), a clinically used drug for the treatment of acute promyelocytic leukemia (APL), have been actively studied mainly through characterization of individual putative protein targets. There appear to be no studies at a system level. Herein, we integrate metalloproteomics through a newly developed organoarsenic probe, As-AC (C20H17AsN4O3S2) with quantitative proteomics, allowing 37 arsenic binding and 250 arsenic regulated proteins to be identified in NB4, a human APL cell line. Bioinformatics analysis reveals that ATO disrupts multiple physiological processes, in particular, chaperone-related protein folding and cellular response to stress. Furthermore, we discover heat shock protein 60 (Hsp60) as a vital target of ATO. Through biophysical and cell-based assays, we demonstrate that ATO binds to Hsp60, leading to abolishment of Hsp60 refolding capability. Significantly, the binding of ATO to Hsp60 disrupts the formation of Hsp60-p53 and Hsp60-survivin complexes, resulting in degradation of p53 and survivin. This study provides significant insights into the mechanism of action of ATO at a systemic perspective, and serves as guidance for the rational design of metal-based anticancer drugs. A highly selective organoarsenic fluorescent probe As-AC and quantitative proteomics were employed to track arsenic-binding and regulating proteins in live leukemia cells. Hsp60 was validated as a new target of ATO.![]()
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Affiliation(s)
- Xuqiao Hu
- Department of Chemistry and CAS-HKU Joint Laboratory of Metallomics on Health and Environment, The University of Hong Kong Hong Kong SAR P. R. China
| | - Hongyan Li
- Department of Chemistry and CAS-HKU Joint Laboratory of Metallomics on Health and Environment, The University of Hong Kong Hong Kong SAR P. R. China
| | - Tiffany Ka-Yan Ip
- Department of Chemistry and CAS-HKU Joint Laboratory of Metallomics on Health and Environment, The University of Hong Kong Hong Kong SAR P. R. China
| | - Yam Fung Cheung
- Department of Chemistry and CAS-HKU Joint Laboratory of Metallomics on Health and Environment, The University of Hong Kong Hong Kong SAR P. R. China
| | - Mohamad Koohi-Moghadam
- Department of Chemistry and CAS-HKU Joint Laboratory of Metallomics on Health and Environment, The University of Hong Kong Hong Kong SAR P. R. China .,Division of Applied Oral Sciences and Community Dental Care, Faculty of Dentistry, University of Hong Kong Hong Kong SAR P. R. China
| | - Haibo Wang
- Department of Chemistry and CAS-HKU Joint Laboratory of Metallomics on Health and Environment, The University of Hong Kong Hong Kong SAR P. R. China
| | - Xinming Yang
- Department of Chemistry and CAS-HKU Joint Laboratory of Metallomics on Health and Environment, The University of Hong Kong Hong Kong SAR P. R. China
| | - Daniel N Tritton
- Department of Chemistry and CAS-HKU Joint Laboratory of Metallomics on Health and Environment, The University of Hong Kong Hong Kong SAR P. R. China
| | - Yuchuan Wang
- Department of Chemistry and CAS-HKU Joint Laboratory of Metallomics on Health and Environment, The University of Hong Kong Hong Kong SAR P. R. China
| | - Yi Wang
- Department of Chemistry and CAS-HKU Joint Laboratory of Metallomics on Health and Environment, The University of Hong Kong Hong Kong SAR P. R. China
| | - Runming Wang
- Department of Chemistry and CAS-HKU Joint Laboratory of Metallomics on Health and Environment, The University of Hong Kong Hong Kong SAR P. R. China
| | - Kwan-Ming Ng
- Department of Chemistry and CAS-HKU Joint Laboratory of Metallomics on Health and Environment, The University of Hong Kong Hong Kong SAR P. R. China .,Department of Chemistry, Shantou University Shantou Guangdong 515063 P. R. China
| | - Hua Naranmandura
- Department of Toxicology, School of Medicine and Public Health, Zhejiang University Hangzhou P.R. China
| | - Eric Wai-Choi Tse
- Department of Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Queen Mary Hospital Hong Kong P. R. China
| | - Hongzhe Sun
- Department of Chemistry and CAS-HKU Joint Laboratory of Metallomics on Health and Environment, The University of Hong Kong Hong Kong SAR P. R. China
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20
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Multi-target mode of action of silver against Staphylococcus aureus endows it with capability to combat antibiotic resistance. Nat Commun 2021; 12:3331. [PMID: 34099682 PMCID: PMC8184742 DOI: 10.1038/s41467-021-23659-y] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 04/28/2021] [Indexed: 02/06/2023] Open
Abstract
The rapid emergence of drug resistant Staphylococcus aureus (S. aureus) poses a serious threat to public health globally. Silver (Ag)-based antimicrobials are promising to combat antibiotic resistant S. aureus, yet their molecular targets are largely elusive. Herein, we separate and identify 38 authentic Ag+-binding proteins in S. aureus at the whole-cell scale. We then capture the molecular snapshot on the dynamic action of Ag+ against S. aureus and further validate that Ag+ could inhibit a key target 6-phosphogluconate dehydrogenase through binding to catalytic His185 by X-ray crystallography. Significantly, the multi-target mode of action of Ag+ (and nanosilver) endows its sustainable antimicrobial efficacy, leading to enhanced efficacy of conventional antibiotics and resensitization of MRSA to antibiotics. Our study resolves the long-standing question of the molecular targets of silver in S. aureus and offers insights into the sustainable bacterial susceptibility of silver, providing a potential approach for combating antimicrobial resistance. Silver (Ag) has been used as an antimicrobial agent since a long time, but its molecular mechanism of action was not elucidated due to technical challenges. Here, the authors develop a mass spectrometric approach to identify the Ag-proteome in Staphylococcus aureus, and capture a molecular snapshot of the dynamic bactericidal mode of action of Ag through targeting multiple biological pathways.
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21
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Caicedo A, Zambrano K, Sanon S, Gavilanes AWD. Extracellular mitochondria in the cerebrospinal fluid (CSF): Potential types and key roles in central nervous system (CNS) physiology and pathogenesis. Mitochondrion 2021; 58:255-269. [PMID: 33662579 DOI: 10.1016/j.mito.2021.02.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 02/07/2021] [Accepted: 02/12/2021] [Indexed: 12/12/2022]
Abstract
The cerebrospinal fluid (CSF) has an important role in the transport of nutrients and signaling molecules to the central nervous and immune systems through its circulation along the brain and spinal cord tissues. The mitochondrial activity in the central nervous system (CNS) is essential in processes such as neuroplasticity, neural differentiation and production of neurotransmitters. Interestingly, extracellular and active mitochondria have been detected in the CSF where they act as a biomarker for the outcome of pathologies such as subarachnoid hemorrhage and delayed cerebral ischemia. Additionally, cell-free-circulating mitochondrial DNA (ccf-mtDNA) has been detected in both the CSF of healthy donors and in that of patients with neurodegenerative diseases. Key questions arise as there is still much debate regarding if ccf-mtDNA detected in CSF is associated with a diversity of active or inactive extracellular mitochondria coexisting in distinct pathologies. Additionally, it is of great scientific and medical importance to identify the role of extracellular mitochondria (active and inactive) in the CSF and the difference between them being damage associated molecular patterns (DAMPs) or factors that promote homeostasis. This review analyzes the different types of extracellular mitochondria, methods for their identification and their presence in CSF. Extracellular mitochondria in the CSF could have an important implication in health and disease, which may lead to the development of medical approaches that utilize mitochondria as therapeutic agents.
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Affiliation(s)
- Andrés Caicedo
- Universidad San Francisco de Quito USFQ, Colegio de Ciencias de la Salud, Escuela de Medicina, Quito, Ecuador; Universidad San Francisco de Quito USFQ, Instituto de Investigaciones en Biomedicina, Quito, Ecuador; Mito-Act Research Consortium, Quito, Ecuador; Sistemas Médicos SIME, Universidad San Francisco de Quito, Quito, Ecuador.
| | - Kevin Zambrano
- Universidad San Francisco de Quito USFQ, Colegio de Ciencias de la Salud, Escuela de Medicina, Quito, Ecuador; Universidad San Francisco de Quito USFQ, Instituto de Investigaciones en Biomedicina, Quito, Ecuador; Mito-Act Research Consortium, Quito, Ecuador; School for Mental Health and Neuroscience (MHeNs), Maastricht University, Maastricht, The Netherlands; Instituto de Neurociencias, Universidad San Francisco de Quito USFQ, Quito, Ecuador
| | - Serena Sanon
- Universidad San Francisco de Quito USFQ, Colegio de Ciencias de la Salud, Escuela de Medicina, Quito, Ecuador; Universidad San Francisco de Quito USFQ, Instituto de Investigaciones en Biomedicina, Quito, Ecuador; Mito-Act Research Consortium, Quito, Ecuador; Cornell University, Ithaca, United States
| | - Antonio W D Gavilanes
- Universidad San Francisco de Quito USFQ, Colegio de Ciencias de la Salud, Escuela de Medicina, Quito, Ecuador; School for Mental Health and Neuroscience (MHeNs), Maastricht University, Maastricht, The Netherlands
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22
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Adler S, Motiei L, Mankovski N, Cohen H, Margulies D. Fluorescent Labelling of Cell Surface Proteins on a Solid Support. Isr J Chem 2021. [DOI: 10.1002/ijch.202100028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sean Adler
- Department of Chemical and Structural Biology Weizmann Institute of Science Rehovot 7610001 Israel
| | - Leila Motiei
- Department of Chemical and Structural Biology Weizmann Institute of Science Rehovot 7610001 Israel
| | - Naama Mankovski
- Department of Chemical and Structural Biology Weizmann Institute of Science Rehovot 7610001 Israel
| | - Hagai Cohen
- Department of Chemical Research Support Weizmann Institute of Science Rehovot 7610001 Israel
| | - David Margulies
- Department of Chemical and Structural Biology Weizmann Institute of Science Rehovot 7610001 Israel
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23
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Hatai J, Prasad PK, Lahav-Mankovski N, Oppenheimer-Low N, Unger T, Sirkis YF, Dadosh T, Motiei L, Margulies D. Assessing changes in the expression levels of cell surface proteins with a turn-on fluorescent molecular probe. Chem Commun (Camb) 2021; 57:1875-1878. [PMID: 33427257 DOI: 10.1039/d0cc07095e] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Tri-nitrilotriacetic acid (NTA)-based fluorescent probes were developed and used to image His-tagged-labelled outer membrane protein C (His-OmpC) in live Escherichia coli. One of these probes was designed to light up upon binding, which provided the means to assess changes in the His-OmpC expression levels by taking a simple fluorescence spectrum.
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Affiliation(s)
- Joydev Hatai
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 7610001, Israel.
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24
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Kim J, Li BX, Huang RYC, Qiao JX, Ewing WR, MacMillan DWC. Site-Selective Functionalization of Methionine Residues via Photoredox Catalysis. J Am Chem Soc 2020; 142:21260-21266. [PMID: 33290649 DOI: 10.1021/jacs.0c09926] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Bioconjugation technologies have revolutionized the practice of biology and medicine by allowing access to novel biomolecular scaffolds. New methods for residue-selective bioconjugation are highly sought to expand the toolbox for a variety of bioconjugation applications. Herein we report a site-selective methionine bioconjugation protocol that uses photoexcited lumiflavin to generate open-shell intermediates. This reduction-potential-gated strategy enables access to residues unavailable with traditional nucleophilicity-based conjugation methods. To demonstrate the versatility and robustness of this new protocol, we have modified various proteins and further utilized this functional handle to append diverse biological payloads.
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Affiliation(s)
- Junyong Kim
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
| | - Beryl X Li
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
| | - Richard Y-C Huang
- Pharmaceutical Candidate Optimization, Research and Development, Bristol-Myers Squibb Company, Princeton, New Jersey 08542, United States
| | - Jennifer X Qiao
- Discovery Chemistry, Research and Development, Bristol-Myers Squibb Company, Princeton, New Jersey 08542, United States
| | - William R Ewing
- Discovery Chemistry, Research and Development, Bristol-Myers Squibb Company, Princeton, New Jersey 08542, United States
| | - David W C MacMillan
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
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25
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Macias‐Contreras M, Zhu L. The Collective Power of Genetically Encoded Protein/Peptide Tags and Bioorthogonal Chemistry in Biological Fluorescence Imaging. CHEMPHOTOCHEM 2020. [DOI: 10.1002/cptc.202000215] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Miguel Macias‐Contreras
- Department of Chemistry and Biochemistry Florida State University 95 Chieftan Way Tallahassee FL 32306-4390 USA
| | - Lei Zhu
- Department of Chemistry and Biochemistry Florida State University 95 Chieftan Way Tallahassee FL 32306-4390 USA
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26
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Dai SY, Yang D. A Visible and Near-Infrared Light Activatable Diazocoumarin Probe for Fluorogenic Protein Labeling in Living Cells. J Am Chem Soc 2020; 142:17156-17166. [PMID: 32870680 DOI: 10.1021/jacs.0c08068] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Chemical modification of proteins in living cells permits valuable glimpses into the molecular interactions that underpin dynamic cellular events. While genetic engineering methods are often preferred, selective labeling of endogenous proteins in a complex intracellular milieu with chemical approaches represents a significant challenge. In this study, we report novel diazocoumarin compounds that can be photoactivated by visible (430-490 nm) and near-infrared light (800 nm) irradiation to photo-uncage reactive carbene intermediates, which could subsequently undergo an insertion reaction with concomitant fluorescence "turned on". With these new molecules in hand, we have developed a new approach for rapid, selective, and fluorogenic labeling of endogenous protein in living cells. By using CA-II and eDHFR as model proteins, we demonstrated that subcellular localization of proteins can be precisely visualized by live-cell imaging and protein levels can be reliably quantified in multiple cell types using flow cytometry. Dynamic protein regulations such as hypoxia-induced CA-IX accumulation can also be detected. In addition, by two-photon excitation with an 800 nm laser, cell-selective labeling can also be achieved with spatially controlled irradiation. Our method circumvents the cytotoxicity of UV light and obviates the need for introducing external reporters with "click chemistries". We believe that this approach of fluorescence labeling of endogenous protein by bioorthogonal photoirradiation opens up exciting opportunities for discoveries and mechanistic interrogation in chemical biology.
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Affiliation(s)
- Sheng-Yao Dai
- Morningside Laboratory for Chemical Biology, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Dan Yang
- Morningside Laboratory for Chemical Biology, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
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27
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Raducanu VS, Isaioglou I, Raducanu DV, Merzaban JS, Hamdan SM. Simplified detection of polyhistidine-tagged proteins in gels and membranes using a UV-excitable dye and a multiple chelator head pair. J Biol Chem 2020; 295:12214-12223. [PMID: 32647010 PMCID: PMC7443479 DOI: 10.1074/jbc.ra120.014132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/29/2020] [Indexed: 12/22/2022] Open
Abstract
The polyhistidine tag (His-tag) is one of the most popular protein tags used in the life sciences. Traditionally, the detection of His-tagged proteins relies on immunoblotting with anti-His antibodies. This approach is laborious for certain applications, such as protein purification, where time and simplicity are critical. The His-tag can also be directly detected by metal ion-loaded nickel-nitrilotriacetic acid-based chelator heads conjugated to fluorophores, which is a convenient alternative method to immunoblotting. Typically, such chelator heads are conjugated to either green or red fluorophores, the detection of which requires specialized excitation sources and detection systems. Here, we demonstrate that post-run staining is ideal for His-tag detection by metal ion-loaded and fluorescently labeled chelator heads in PAGE and blot membranes. Additionally, by comparing the performances of different chelator heads, we show how differences in microscopic affinity constants translate to macroscopic differences in the detection limits in environments with limited diffusion, such as PAGE. On the basis of these results, we devise a simple approach, called UVHis-PAGE, that uses metal ion-loaded and fluorescently labeled chelator heads to detect His-tagged proteins in PAGE and blot membranes. Our method uses a UV transilluminator as an excitation source, and the results can be visually inspected by the naked eye.
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Affiliation(s)
- Vlad-Stefan Raducanu
- Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Ioannis Isaioglou
- Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Daniela-Violeta Raducanu
- Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Jasmeen S Merzaban
- Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Samir M Hamdan
- Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia.
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28
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Cheng T, Lai YT, Wang C, Wang Y, Jiang N, Li H, Sun H, Jin L. Bismuth drugs tackle Porphyromonas gingivalis and attune cytokine response in human cells. Metallomics 2020; 11:1207-1218. [PMID: 31179464 DOI: 10.1039/c9mt00085b] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Periodontitis is the leading cause of severe tooth loss and edentulism in adults worldwide and is closely linked to systemic conditions such as diabetes and cardiovascular disease. Porphyromonas gingivalis is the key pathogen in periodontitis. Herein, we provided the first evidence that bismuth drugs suppress P. gingivalis in its planktonic, biofilm, and intracellular states. In total, 42 bismuth-associated proteins were identified including its major virulent factors (e.g., gingipains, hemagglutinin HagA, and fimbriae). Bismuth perturbed its iron acquisition, disturbed the energy metabolism and virulence, and deactivated multiple key enzymes (e.g., superoxide dismutase and thioredoxins). Moreover, bismuth inhibited its biofilm formation and disrupted the 3-day matured biofilms. Notably, the internalized P. gingivalis in various human cells (e.g., human gingival epithelium progenitors, HGEPs) was oppressed by bismuth but not the commonly used antibiotic metronidazole. Importantly, bismuth drugs enabled the counteraction of immuno-inflammatory responses in different host cells perturbed by P. gingivalis. The production of IL-6 and IL-8 attenuated by P. gingivalis in both of native and IL-1β-stimulated HGEPs was restored, while the bacterium-enhanced expression of IL-6, IL-1β, and TNFα in THP-1 macrophages was alleviated. This proof-of-concept study brings prospects for the potential reposition of the routinely used anti-Helicobacter pylori bismuth drugs to better manage inflammatory diseases such as periodontitis and P. gingivalis-related complex systemic disorders.
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Affiliation(s)
- Tianfan Cheng
- Discipline of Periodontology, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China.
| | - Yau-Tsz Lai
- Department of Chemistry, The University of Hong Kong, Hong Kong SAR, China.
| | - Chuan Wang
- Discipline of Periodontology, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China.
| | - Yi Wang
- Discipline of Periodontology, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China.
| | - Nan Jiang
- Department of Chemistry, The University of Hong Kong, Hong Kong SAR, China.
| | - Hongyan Li
- Department of Chemistry, The University of Hong Kong, Hong Kong SAR, China.
| | - Hongzhe Sun
- Department of Chemistry, The University of Hong Kong, Hong Kong SAR, China.
| | - Lijian Jin
- Discipline of Periodontology, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China.
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29
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Wang H, Zhou Y, Xu X, Li H, Sun H. Metalloproteomics in conjunction with other omics for uncovering the mechanism of action of metallodrugs: Mechanism-driven new therapy development. Curr Opin Chem Biol 2020; 55:171-179. [PMID: 32200302 DOI: 10.1016/j.cbpa.2020.02.006] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 02/17/2020] [Accepted: 02/18/2020] [Indexed: 12/20/2022]
Abstract
Medicinal inorganic chemistry has been largely stimulated by the clinic success of platinum anticancer drugs. An array of metal-based drugs (e.g. platinum, gold, bismuth, and silver) are currently used clinically for the treatment of various diseases. Integrating multiomics approaches, particularly metalloproteomics, with other biochemical characterizations enables comprehensive understanding of cellular responses of metallodrugs, which in turn will guide the rational design of a new drug and modification of the presently used drugs. This review aims to summarize the recent progress in this area. We will describe the technology platforms and their applications for uncovering the mechanisms of action of metallodrugs, for which remarkable advances have been achieved recently. Moreover, we will also highlight the application of newly generated knowledge for the development of novel therapeutic strategies.
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Affiliation(s)
- Haibo Wang
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China
| | - Ying Zhou
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China
| | - Xiaohan Xu
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China
| | - Hongyan Li
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China
| | - Hongzhe Sun
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China.
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30
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Zheng XT, Choi Y, Phua DGG, Tan YN. Noncovalent Fluorescent Biodot-Protein Conjugates with Well-Preserved Native Functions for Improved Sweat Glucose Detection. Bioconjug Chem 2020; 31:754-763. [PMID: 31995367 DOI: 10.1021/acs.bioconjchem.9b00856] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
To overcome the traditional issues of protein labeling, we report herein an effective approach for noncovalent conjugation of the biomolecule-derived fluorescent nanodots (biodot) to functional proteins without the addition of chemical linkers for biosensor development. The as-prepared fluorescent biodot-protein conjugates are very stable near physiological pH, exhibiting excellent photostability and thermal stability. More importantly, the native functions of proteins, including drug binding and enzymatic activities, are well-preserved after conjugating with biodots. The optimized protein conjugation strategy is then applied to prepare biodot-glucose oxidase (GOx) fluorescent sensing probes for sweat glucose detection. Results show that the as-prepared sensing probes could achieve better assay performance than those covalent conjugates as demonstrated herein. Specifically, GOx in the noncovalently bound conjugates are able to catalyze the oxidation of glucose effectively, which generates hydrogen peroxide as a byproduct. In the presence of Fe2+, Fenton reaction takes place to produce hydroxyl radicals and Fe3+, leading to significant fluorescence quenching of biodots on the conjugates. This simple one-step enzymatic assay in a single probe achieves a wide linear range of 25-1000 μM (R2 = 0.99) with a low detection limit of 25 μM. Furthermore, negligible interference is observed in the complex artificial sweat sample for accurate glucose quantification, achieving an excellent recovery rate of 100.5 ± 2.2%. This work provides a facile conjugation method that is generally applicable to a wide range of proteins, which will help to accelerate future development of multifunctional fluorescent probes to provide optical signals with unique protein functions (e.g., enzymatic, recognition, etc.) for biomedical sensing and imaging.
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Affiliation(s)
- Xin Ting Zheng
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Singapore 138634, Singapore
| | - Yoonah Choi
- Department of Chemistry, National University of Singapore, 3 Science Drive, Singapore 117543, Singapore
| | - Darren Guan Ge Phua
- Department of Chemistry, National University of Singapore, 3 Science Drive, Singapore 117543, Singapore
| | - Yen Nee Tan
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Singapore 138634, Singapore.,Faculty of Science, Agriculture & Engineering, Newcastle University, Newcastle Upon Tyne NE1 7RU, United Kingdom.,Department of Chemistry, National University of Singapore, 3 Science Drive, Singapore 117543, Singapore
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31
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Liu SL, Wang ZG, Xie HY, Liu AA, Lamb DC, Pang DW. Single-Virus Tracking: From Imaging Methodologies to Virological Applications. Chem Rev 2020; 120:1936-1979. [PMID: 31951121 PMCID: PMC7075663 DOI: 10.1021/acs.chemrev.9b00692] [Citation(s) in RCA: 114] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
![]()
Uncovering
the mechanisms of virus infection and assembly is crucial
for preventing the spread of viruses and treating viral disease. The
technique of single-virus tracking (SVT), also known as single-virus
tracing, allows one to follow individual viruses at different parts
of their life cycle and thereby provides dynamic insights into fundamental
processes of viruses occurring in live cells. SVT is typically based
on fluorescence imaging and reveals insights into previously unreported
infection mechanisms. In this review article, we provide the readers
a broad overview of the SVT technique. We first summarize recent advances
in SVT, from the choice of fluorescent labels and labeling strategies
to imaging implementation and analytical methodologies. We then describe
representative applications in detail to elucidate how SVT serves
as a valuable tool in virological research. Finally, we present our
perspectives regarding the future possibilities and challenges of
SVT.
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Affiliation(s)
- Shu-Lin Liu
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Center for Analytical Sciences, College of Chemistry, and School of Medicine , Nankai University , Tianjin 300071 , P. R. China.,Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry , China University of Geosciences , Wuhan 430074 , P. R. China
| | - Zhi-Gang Wang
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Center for Analytical Sciences, College of Chemistry, and School of Medicine , Nankai University , Tianjin 300071 , P. R. China
| | - Hai-Yan Xie
- School of Life Science , Beijing Institute of Technology , Beijing 100081 , P. R. China
| | - An-An Liu
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Center for Analytical Sciences, College of Chemistry, and School of Medicine , Nankai University , Tianjin 300071 , P. R. China
| | - Don C Lamb
- Physical Chemistry, Department of Chemistry, Center for Nanoscience (CeNS), and Center for Integrated Protein Science Munich (CIPSM) and Nanosystems Initiative Munich (NIM) , Ludwig-Maximilians-Universität , München , 81377 , Germany
| | - Dai-Wen Pang
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Center for Analytical Sciences, College of Chemistry, and School of Medicine , Nankai University , Tianjin 300071 , P. R. China.,College of Chemistry and Molecular Sciences, State Key Laboratory of Virology, The Institute for Advanced Studies, and Wuhan Institute of Biotechnology , Wuhan University , Wuhan 430072 , P. R. China
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32
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Chen H, Yang P, Li Y, Zhang L, Ding F, He X, Shen J. Insight into triphenylamine and coumarin serving as copper (II) sensors with "OFF" strategy and for bio-imaging in living cells. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 224:117384. [PMID: 31336321 DOI: 10.1016/j.saa.2019.117384] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 07/10/2019] [Accepted: 07/12/2019] [Indexed: 06/10/2023]
Abstract
Chemosensing is one of the widest and powerful techniques for response to anions and cations in living systems serving as bio-probes. Meanwhile, copper(II) (Cu(II)) widely exists in the environment and the human body as a common trace element, which plays an necessary role in most physiological processes. Thus, it is extremely urgent to explore means for effective, rapid and convenient detection of Cu(II) in living cells. Herein, we introduce a novel strategy for designing triphenylamine (TS) and coumarin-based (CS) functional sensors for Cu(II) detection with fluorescence "OFF" switching mechanism by blocking intramolecular charge transfer (ICT). Based on this design strategy, we have demonstrated two kinds of fluorophores sensors with aunique new fluorescent dye and excellent photophysical properties, which have shown rapid recognition of Cu(II) via a stoichiometric ratio of 2:1 and the proposed binding mode was confirmed by the single-crystal structure of CS-Cu(II) complex. In addition, we have carried out density functional theory (DFT) calculation with the B3LYP exchange functional employing RB3LYP/6-31G basis sets to get insight into the mechanism of Cu(II)-sensors alongside their optical properties. Furthermore, the sensors were capable of bio-imaging Cu(II) in living cancer cells (HepG2, A549 and Hela) with low cytotoxicity and good biocompatibility shown. Taken together, We expect that this novel strategy would provide new insight into the development of Cu(II) detection techniques and could be used more for biomedical applications.
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Affiliation(s)
- Hong Chen
- School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China; Luoyang Key Laboratory of Organic Functional Molecules, College of Food and Drug, Luoyang Normal University, Luoyang, Henan 471934, China
| | - Ping Yang
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou 510070, China
| | - Yahui Li
- School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Lilei Zhang
- College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang, Henan 471934, China
| | - Feng Ding
- Department of Microbiology & Immunology, School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Xiaojun He
- School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Jianliang Shen
- School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China; Wenzhou Institute of Biomaterials and Engineering, Chinese Academy of Science, Wenzhou, Zhejiang 325001, China.
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33
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Jiang N, Li H, Sun H. Recognition of Proteins by Metal Chelation-Based Fluorescent Probes in Cells. Front Chem 2019; 7:560. [PMID: 31448265 PMCID: PMC6695521 DOI: 10.3389/fchem.2019.00560] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 07/23/2019] [Indexed: 01/23/2023] Open
Abstract
Fluorescent probes such as thiol-reactive and Ni2+-nitrilotriacetate (NTA) based probes provide a powerful toolbox for real-time visualization of a protein and a proteome in living cells. Herein, we first went through basic principles and applications of thiol-reactive based probes in protein imaging and recognition. We then summarize a family of metal-NTA based fluorescence probes in the visualization of His6-tagged protein and identification of metalloproteins at proteome-wide scale. The pros and cons of the probes, as well as ways to optimize them, are discussed.
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Affiliation(s)
| | | | - Hongzhe Sun
- Department of Chemistry, The University of Hong Kong, Hong Kong, China
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34
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Zhang S, Wang C, Chang H, Zhang Q, Cheng Y. Off-on switching of enzyme activity by near-infrared light-induced photothermal phase transition of nanohybrids. SCIENCE ADVANCES 2019; 5:eaaw4252. [PMID: 31457084 PMCID: PMC6703869 DOI: 10.1126/sciadv.aaw4252] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 07/12/2019] [Indexed: 06/10/2023]
Abstract
The off-on manipulation of enzyme activity is a challenging task. We report a new strategy for reversible off-on control of enzyme activity by near-infrared light. Enzymes acting on macromolecular substrates are embedded with an ultrasmall platinum nanoparticle and decorated with thermoresponsive copolymers, which exhibit upper critical solution temperature (UCST) behavior. The polymer-enzyme nanohybrids form microscale aggregates in solution below the UCST to prevent macromolecular substrates from approaching the enzymes and thus inhibit the enzyme activity, and they disassemble above the UCST to reactivate the enzyme. Upon near-infrared irradiation, platinum nanoparticles inside the enzymes generate heat through a photothermal effect to cause phase transition of the copolymers. Therefore, we can reversibly switch off and on the activities of three enzymes acting on polysaccharide, protein, and plasmid. The enzyme activities are increased by up to 61-fold after laser irradiation. This study provides a facile and efficient method for off-on control of enzyme activity.
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Affiliation(s)
- Song Zhang
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, China
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Changping Wang
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Hong Chang
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Qiang Zhang
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Yiyun Cheng
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, China
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, China
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35
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Wang Y, Li H, Sun H. Metalloproteomics for Unveiling the Mechanism of Action of Metallodrugs. Inorg Chem 2019; 58:13673-13685. [DOI: 10.1021/acs.inorgchem.9b01199] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Yuchuan Wang
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of China
| | - Hongyan Li
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of China
| | - Hongzhe Sun
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of China
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36
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Yang Y, Jiang N, Lai YT, Chang YY, Yang X, Sun H, Li H. Green Fluorescent Probe for Imaging His 6-Tagged Proteins Inside Living Cells. ACS Sens 2019; 4:1190-1196. [PMID: 31012309 DOI: 10.1021/acssensors.8b01128] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Small molecule-based fluorescent probes offer great opportunities for specifically tracking proteins in living systems with minimal perturbation on the protein function and localization. Herein, we report a small green fluorescent probe (Ni2+- NTA-AF) consisting of a Ni2+-NTA moiety, a fluorescein, and an arylazide group, that binds specifically to His6-tagged proteins with fluorescence enhancement in vitro upon photoactivation of the arylazide group. Importantly, the probe can cross the cell membranes and stoichiometrically label His6-tagged proteins rapidly (∼15 min) in living prokaryotic and eukaryotic cells exemplified by a DNA repair protein Xeroderma pigmentosum group A (XPA). Using the probe, we successfully visualized Sirtuin 5, which is localized to the mitochondria. This probe exhibits high quantum yields and improved solubility, offering a new opportunity for imaging intracellular His6-tagged proteins inside living cells with better contrast.
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Affiliation(s)
- Ya Yang
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Nan Jiang
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Yau-Tsz Lai
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Yuen-Yan Chang
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Xinming Yang
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Hongzhe Sun
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Hongyan Li
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
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37
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Wang Y, Han B, Xie Y, Wang H, Wang R, Xia W, Li H, Sun H. Combination of gallium(iii) with acetate for combating antibiotic resistant Pseudomonas aeruginosa. Chem Sci 2019; 10:6099-6106. [PMID: 31360415 PMCID: PMC6585600 DOI: 10.1039/c9sc01480b] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 05/02/2019] [Indexed: 02/05/2023] Open
Abstract
Combination of Ga(iii) with acetate greatly enhances the antimicrobial activity of Ga(iii) against P. aeruginosa, and shows promise to combat the crisis of antimicrobial resistance.
Gallium(iii) has been widely used as a diagnostic and therapeutic agent in clinics for the treatment of various diseases, in particular, Ga-based drugs have been exploited as antimicrobials to combat the crisis of antimicrobial resistance. The therapeutic properties of Ga(iii) are believed to be attributable to its chemical similarity to Fe(iii). However, the molecular mechanisms of action of gallium remain unclear. Herein, by integrating metalloproteomics with metabolomics and transcriptomics, we for the first time identified RpoB and RpoC, two subunits of RNA polymerase, as Ga-binding proteins in Pseudomonas aeruginosa. We show that Ga(iii) targets the essential transcription enzyme RNA polymerase to suppress RNA synthesis, resulting in reduced metabolic rates and energy utilization. Significantly, we show that exogenous supplementation of acetate could enhance the antimicrobial activity of Ga(iii), evidenced by the inhibited growth of persister cells and attenuated bacterial virulence. The effectiveness of co-therapy of Ga(iii) and acetate was further validated in mammalian cell and murine skin infection models, which is attributable to enhanced uptake of Ga(iii), and reduced TCA cycle flow and bacterial respiration. Our study provides novel insights into the mechanistic understanding of the antimicrobial activity of Ga(iii) and offers a safe and practical strategy of using metabolites to enhance the efficacy of Ga(iii)-based antimicrobials to fight drug resistance.
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Affiliation(s)
- Yuchuan Wang
- School of Chemistry , Sun Yat-sen University , Guangzhou , 510275 , P. R. China.,Department of Chemistry , The University of Hong Kong , Hong Kong , P. R. China .
| | - Bingjie Han
- School of Chemistry , Sun Yat-sen University , Guangzhou , 510275 , P. R. China
| | - Yanxuan Xie
- School of Chemistry , Sun Yat-sen University , Guangzhou , 510275 , P. R. China
| | - Haibo Wang
- Department of Chemistry , The University of Hong Kong , Hong Kong , P. R. China .
| | - Runming Wang
- Department of Chemistry , The University of Hong Kong , Hong Kong , P. R. China .
| | - Wei Xia
- School of Chemistry , Sun Yat-sen University , Guangzhou , 510275 , P. R. China
| | - Hongyan Li
- Department of Chemistry , The University of Hong Kong , Hong Kong , P. R. China .
| | - Hongzhe Sun
- Department of Chemistry , The University of Hong Kong , Hong Kong , P. R. China .
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38
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Jia S, He D, Chang CJ. Bioinspired Thiophosphorodichloridate Reagents for Chemoselective Histidine Bioconjugation. J Am Chem Soc 2019; 141:7294-7301. [PMID: 31017395 DOI: 10.1021/jacs.8b11912] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Site-selective bioconjugation to native protein residues is a powerful tool for protein functionalization, with cysteine and lysine side chains being the most common points for attachment owing to their high nucleophilicity. We now report a strategy for histidine modification using thiophosphorodichloridate reagents that mimic post-translational histidine phosphorylation, enabling fast and selective labeling of protein histidines under mild conditions where various payloads can be introduced via copper-assisted alkyne-azide cycloaddition (CuAAC) chemistry. We establish that these reagents are particularly effective at covalent modification of His-tags, which are common motifs to facilitate protein purification, as illustrated by selective attachment of polyarginine cargoes to enhance the uptake of proteins into living cells. This work provides a starting point for probing and enhancing protein function using histidine-directed chemistry.
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Affiliation(s)
- Shang Jia
- Department of Chemistry , University of California , Berkeley , California 94720 , United States
| | - Dan He
- Department of Chemistry , University of California , Berkeley , California 94720 , United States
| | - Christopher J Chang
- Department of Chemistry , University of California , Berkeley , California 94720 , United States.,Department of Molecular and Cell Biology , University of California , Berkeley , California 94720 , United States.,Howard Hughes Medical Institute , University of California , Berkeley , California 94720 , United States
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Li H, Wang R, Sun H. Systems Approaches for Unveiling the Mechanism of Action of Bismuth Drugs: New Medicinal Applications beyond Helicobacter Pylori Infection. Acc Chem Res 2019; 52:216-227. [PMID: 30596427 DOI: 10.1021/acs.accounts.8b00439] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Metallodrugs have been widely used as diagnostic and therapeutic agents. Understanding their mechanisms of action may lead to advances in rational drug design. However, to achieve this, diversified approaches are required because of the complexity of metal-biomolecule interactions. Bismuth drugs in combination with antibiotics as a quadruple therapy show excellent success rates in the eradication of Helicobacter pylori, even for antibiotic-resistant strains, and in fact, they have been used in the clinic for decades for the treatment of infection. Understanding the mechanism of action of bismuth drugs may extend their medicinal application beyond the treatment of H. pylori infection. This Account describes several general strategies for mechanistic studies of metallodrugs, including system pharmacology and metalloproteomics approaches. The application of these approaches is exemplified using bismuth drugs. Through a system pharmacology approach, we showed that glutathione- and multidrug-resistance-associated protein 1-mediated self-propelled disposal of bismuth in human cells might explain the selective toxicity of bismuth drugs to H. pylori but not the human host. The development of metalloproteomics has enabled extensive studies of the putative protein targets of metallodrugs with a dynamic range of affinity. Continuous-flow GE-ICP-MS allows simultaneous monitoring of metals and their associated proteins with relatively high affinity on a proteome-wide scale. The fluorescence approach relies on unique M n+-NTA-based fluorescence probes and is particularly applicable for mining those proteins that bind to metals/metallodrugs weakly or transiently. Integration of these methods with quantitative proteomics makes it possible to maximum coverage of bismuth-associated proteins, and the sustained efficacy of bismuth drugs lies in their ability to disrupt multiple biological pathways through binding and functional perturbation of key enzymes. The knowledge acquired by mechanistic studies of bismuth drugs led to the discovery of UreG as a new target for the development of urease inhibitors. The ability of Bi(III) to inhibit metallo-β-lactamase (MBL) activity through displacement of the Zn(II) cofactor renders bismuth drugs new potential as broad-spectrum inhibitors of MBLs. Therefore, bismuth drugs could be repurposed together with clinically used antibiotics as a cotherapy to cope with the current antimicrobial resistance crisis. We anticipate that the methodologies described in this Account are generally applicable for understanding the (patho)physiological roles of metals/metallodrugs. Our mechanism-guided discovery of new druggable targets as well as new medicinal applications of bismuth drugs will inspire researchers in relevant fields to engage in the rational design of drugs and reuse of existing drugs, eventually leading to the development of new effective therapeutics.
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Affiliation(s)
- Hongyan Li
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Runming Wang
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Hongzhe Sun
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
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40
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Peciak K, Laurine E, Tommasi R, Choi JW, Brocchini S. Site-selective protein conjugation at histidine. Chem Sci 2019; 10:427-439. [PMID: 30809337 PMCID: PMC6354831 DOI: 10.1039/c8sc03355b] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Accepted: 10/09/2018] [Indexed: 12/20/2022] Open
Abstract
Site-selective conjugation generally requires both (i) molecular engineering of the protein of interest to introduce a conjugation site at a defined location and (ii) a site-specific conjugation technology. Three N-terminal interferon α2-a (IFN) variants with truncated histidine tags were prepared and conjugation was examined using a bis-alkylation reagent, PEG(10kDa)-mono-sulfone 3. A histidine tag comprised of two histidines separated by a glycine (His2-tag) underwent PEGylation. Two more IFN variants were then prepared with the His2-tag engineered at different locations in IFN. Another IFN variant was prepared with the His-tag introduced in an α-helix, and required three contiguous histidines to ensure that two histidine residues in the correct conformation would be available for conjugation. Since histidine is a natural amino acid, routine methods of site-directed mutagenesis were used to generate the IFN variants from E. coli in soluble form at titres comparable to native IFN. PEGylation conversions ranged from 28-39%. A single step purification process gave essentially the pure PEG-IFN variant (>97% by RP-HPLC) in high recovery with isolated yields ranging from 21-33%. The level of retained bioactivity was strongly dependent on the site of PEG conjugation. The highest biological activity of 74% was retained for the PEG10-106(HGHG)-IFN variant which is unprecedented for a PEGylated IFN. The His2-tag at 106(HGHG)-IFN is engineered at the flexible loop most distant from IFN interaction with its dimeric receptor. The biological activity for the PEG10-5(HGH)-IFN variant was determined to be 17% which is comparable to other PEGylated IFN conjugates achieved at or near the N-terminus that have been previously described. The lowest retained activity (10%) was reported for PEG10-120(HHH)-IFN which was prepared as a negative control targeting a IFN site thought to be involved in receptor binding. The presence of two histidines as a His2-tag to generate a site-selective target for bis-alkylating PEGylation is a feasible approach for achieving site-selective PEGylation. The use of a His2-tag to strategically engineer a conjugation site in a protein location can result in maximising the retention of the biological activity following protein modification.
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Affiliation(s)
- Karolina Peciak
- UCL School of Pharmacy , University College London , 29-39 Brunswick Square , London , WC1N 1AX , UK .
- Abzena , Babraham Research Campus, Babraham , Cambridge CB22 3AT , UK
| | | | - Rita Tommasi
- Abzena , Babraham Research Campus, Babraham , Cambridge CB22 3AT , UK
| | - Ji-Won Choi
- Abzena , Babraham Research Campus, Babraham , Cambridge CB22 3AT , UK
| | - Steve Brocchini
- UCL School of Pharmacy , University College London , 29-39 Brunswick Square , London , WC1N 1AX , UK .
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41
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Tang Q, Zhao D, Yang H, Wang L, Zhang X. A pH-responsive self-healing hydrogel based on multivalent coordination of Ni2+ with polyhistidine-terminated PEG and IDA-modified oligochitosan. J Mater Chem B 2019; 7:30-42. [DOI: 10.1039/c8tb02360c] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A multivalent Ni2+ coordination hydrogel based on polyhistidine-terminated PEG and IDA-modified oligochitosan with enhanced neutral stability and mild-acid responsiveness is reported herein.
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Affiliation(s)
- Quan Tang
- CAS Key Laboratory of Soft Matter Chemistry
- School of Chemistry and Materials Science
- University of Science and Technology of China
- Hefei
- P. R. China
| | - Dinglei Zhao
- CAS Key Laboratory of Soft Matter Chemistry
- School of Chemistry and Materials Science
- University of Science and Technology of China
- Hefei
- P. R. China
| | - Haiyang Yang
- CAS Key Laboratory of Soft Matter Chemistry
- School of Chemistry and Materials Science
- University of Science and Technology of China
- Hefei
- P. R. China
| | - Lijun Wang
- CAS Key Laboratory of Soft Matter Chemistry
- School of Chemistry and Materials Science
- University of Science and Technology of China
- Hefei
- P. R. China
| | - Xingyuan Zhang
- CAS Key Laboratory of Soft Matter Chemistry
- School of Chemistry and Materials Science
- University of Science and Technology of China
- Hefei
- P. R. China
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42
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Mortensen MR, Skovsgaard MB, Okholm AH, Scavenius C, Dupont DM, Rosen CB, Enghild JJ, Kjems J, Gothelf KV. Small-Molecule Probes for Affinity-Guided Introduction of Biocompatible Handles on Metal-Binding Proteins. Bioconjug Chem 2018; 29:3016-3025. [DOI: 10.1021/acs.bioconjchem.8b00424] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Michael R. Mortensen
- Center for Multifunctional Biomolecular Drug Design at the Interdisciplinary Nanoscience Center, Aarhus University, Gustav Wieds Vej 14, 8000 C, Aarhus, Denmark
- Department of Chemistry, Aarhus University, Langelandsgade 140, 8000 C Aarhus, Denmark
| | - Mikkel B. Skovsgaard
- Center for Multifunctional Biomolecular Drug Design at the Interdisciplinary Nanoscience Center, Aarhus University, Gustav Wieds Vej 14, 8000 C, Aarhus, Denmark
- Department of Chemistry, Aarhus University, Langelandsgade 140, 8000 C Aarhus, Denmark
| | - Anders H. Okholm
- Center for Multifunctional Biomolecular Drug Design at the Interdisciplinary Nanoscience Center, Aarhus University, Gustav Wieds Vej 14, 8000 C, Aarhus, Denmark
| | - Carsten Scavenius
- Department of Molecular Biology and Genetics, Aarhus University, Gustav Wieds Vej 10, 8000 C Aarhus, Denmark
| | - Daniel M. Dupont
- Center for Multifunctional Biomolecular Drug Design at the Interdisciplinary Nanoscience Center, Aarhus University, Gustav Wieds Vej 14, 8000 C, Aarhus, Denmark
| | - Christian B. Rosen
- Center for Multifunctional Biomolecular Drug Design at the Interdisciplinary Nanoscience Center, Aarhus University, Gustav Wieds Vej 14, 8000 C, Aarhus, Denmark
- Department of Chemistry, Aarhus University, Langelandsgade 140, 8000 C Aarhus, Denmark
| | - Jan J. Enghild
- Department of Molecular Biology and Genetics, Aarhus University, Gustav Wieds Vej 10, 8000 C Aarhus, Denmark
| | - Jørgen Kjems
- Center for Multifunctional Biomolecular Drug Design at the Interdisciplinary Nanoscience Center, Aarhus University, Gustav Wieds Vej 14, 8000 C, Aarhus, Denmark
| | - Kurt V. Gothelf
- Center for Multifunctional Biomolecular Drug Design at the Interdisciplinary Nanoscience Center, Aarhus University, Gustav Wieds Vej 14, 8000 C, Aarhus, Denmark
- Department of Chemistry, Aarhus University, Langelandsgade 140, 8000 C Aarhus, Denmark
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43
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Bartoschik T, Galinec S, Kleusch C, Walkiewicz K, Breitsprecher D, Weigert S, Muller YA, You C, Piehler J, Vercruysse T, Daelemans D, Tschammer N. Near-native, site-specific and purification-free protein labeling for quantitative protein interaction analysis by MicroScale Thermophoresis. Sci Rep 2018; 8:4977. [PMID: 29563556 PMCID: PMC5862892 DOI: 10.1038/s41598-018-23154-3] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 03/05/2018] [Indexed: 12/21/2022] Open
Abstract
MicroScale Thermophoresis (MST) is a frequently used method for the quantitative characterization of intermolecular interactions with several advantages over other technologies. One of these is its capability to determine equilibrium constants in solution including complex biological matrices such as cell lysates. MST requires one binding partner to be fluorescent, which is typically achieved by labeling target proteins with a suitable fluorophore. Here, we present a near-native, site-specific in situ labeling strategy for MST experiments that enables reliable measurements in cell lysates and that has distinct advantages over routine covalent labeling techniques. To this end, we exploited the high-affinity interaction of tris-NTA with oligohistidine-tags, which are popular for purification, immobilization or detection of recombinant proteins. We used various DYE-tris-NTA conjugates to successfully label His-tagged proteins that were either purified or a component of cell lysate. The RED-tris-NTA was identified as the optimal dye conjugate with a high affinity towards oligohistidine-tags, a high fluorescence signal and an optimal signal-to-noise ratio in MST binding experiments. Owing to its emission in the red region of the spectrum, it also enables reliable measurements in complex biological matrices such as cell lysates allowing a more physiologically realistic assessment and eliminating the need for protein purification.
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Affiliation(s)
- Tanja Bartoschik
- NanoTemper Technologies GmbH, Floessergasse 4, 81069, München, Germany
| | - Stefanie Galinec
- NanoTemper Technologies GmbH, Floessergasse 4, 81069, München, Germany
| | - Christian Kleusch
- NanoTemper Technologies GmbH, Floessergasse 4, 81069, München, Germany
| | | | | | - Sebastian Weigert
- Division of Biotechnology, Department of Biology, Friedrich-Alexander University Erlangen, Nuremberg Henkestr 91, 91052, Erlangen, Germany
| | - Yves A Muller
- Division of Biotechnology, Department of Biology, Friedrich-Alexander University Erlangen, Nuremberg Henkestr 91, 91052, Erlangen, Germany
| | - Changjiang You
- Division of Biophysics, Department of Biology, University Osnabrück, Barbarastr 11, 49076, Osnabrück, Germany
| | - Jacob Piehler
- Division of Biophysics, Department of Biology, University Osnabrück, Barbarastr 11, 49076, Osnabrück, Germany
| | - Thomas Vercruysse
- KU Leuven Department of Immunology and Microbiology, Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, Herestraat 49, 3000, Leuven, Belgium
| | - Dirk Daelemans
- KU Leuven Department of Immunology and Microbiology, Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, Herestraat 49, 3000, Leuven, Belgium
| | - Nuska Tschammer
- NanoTemper Technologies GmbH, Floessergasse 4, 81069, München, Germany.
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Yang X, Koohi-Moghadam M, Wang R, Chang YY, Woo PCY, Wang J, Li H, Sun H. Metallochaperone UreG serves as a new target for design of urease inhibitor: A novel strategy for development of antimicrobials. PLoS Biol 2018; 16:e2003887. [PMID: 29320492 PMCID: PMC5779714 DOI: 10.1371/journal.pbio.2003887] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 01/23/2018] [Accepted: 12/19/2017] [Indexed: 12/17/2022] Open
Abstract
Urease as a potential target of antimicrobial drugs has received considerable attention given its versatile roles in microbial infection. Development of effective urease inhibitors, however, is a significant challenge due to the deeply buried active site and highly specific substrate of a bacterial urease. Conventionally, urease inhibitors are designed by either targeting the active site or mimicking substrate of urease, which is not efficient. Up to now, only one effective inhibitor—acetohydroxamic acid (AHA)—is clinically available, but it has adverse side effects. Herein, we demonstrate that a clinically used drug, colloidal bismuth subcitrate, utilizes an unusual way to inhibit urease activity, i.e., disruption of urease maturation process via functional perturbation of a metallochaperone, UreG. Similar phenomena were also observed in various pathogenic bacteria, suggesting that UreG may serve as a general target for design of new types of urease inhibitors. Using Helicobacter pylori UreG as a showcase, by virtual screening combined with experimental validation, we show that two compounds targeting UreG also efficiently inhibited urease activity with inhibitory concentration (IC)50 values of micromolar level, resulting in attenuated virulence of the pathogen. We further demonstrate the efficacy of the compounds in a mammalian cell infection model. This study opens up a new opportunity for the design of more effective urease inhibitors and clearly indicates that metallochaperones involved in the maturation of important microbial metalloenzymes serve as new targets for devising a new type of antimicrobial drugs. Urease, a metalloenzyme that catalyzes the hydrolysis of urea, plays important roles in the survival and virulence of many microbial pathogens, and has long been considered an important drug target for the development of novel antimicrobials. However, its deeply buried active site and highly specific substrate of bacterial urease make it very challenging to design effective urease inhibitors by conventional approaches. In this study, we reveal that a bismuth-based drug (colloidal bismuth subcitrate) inhibits urease activity in an unusual way. This drug binds the urease accessary protein UreG and inhibits its GTPase activity, thus perturbing nickel insertion into the apo-urease, a process called urease maturation. UreG is therefore proposed as an alternative target for the development of urease inhibitors. Using H. pylori UreG as an example, combined with virtual screening and experimental validation, we further show that several small molecules that bind and functionally disrupt UreG could indeed inhibit urease activity in bacteria and in a cell infection model and possess potent antimicrobial activity. In summary, we discovered metallochaperone UreG as a new target for the design of urease inhibitors. Such a strategy should have a broad application in the development of metalloenzyme inhibitors.
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Affiliation(s)
- Xinming Yang
- Department of Chemistry, The University of Hong Kong, Hong Kong
| | - Mohamad Koohi-Moghadam
- Department of Chemistry, The University of Hong Kong, Hong Kong
- Center for Genomic Sciences, The University of Hong Kong, Hong Kong
- Center for Individualized Medicine & Department of Health Sciences Research, Mayo Clinic, Scottsdale, Arizona, United States of America
| | - Runming Wang
- Department of Chemistry, The University of Hong Kong, Hong Kong
- Department of Microbiology, The University of Hong Kong, Hong Kong
| | - Yuen-Yan Chang
- Department of Chemistry, The University of Hong Kong, Hong Kong
| | - Patrick C. Y. Woo
- Department of Microbiology, The University of Hong Kong, Hong Kong
- State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, Hong Kong
- The Research Centre of Infection and Immunology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Junwen Wang
- Center for Individualized Medicine & Department of Health Sciences Research, Mayo Clinic, Scottsdale, Arizona, United States of America
- Department of Biomedical Informatics, Arizona State University, Scottsdale, Arizona, United States of America
| | - Hongyan Li
- Department of Chemistry, The University of Hong Kong, Hong Kong
- * E-mail: (HS); (HL)
| | - Hongzhe Sun
- Department of Chemistry, The University of Hong Kong, Hong Kong
- * E-mail: (HS); (HL)
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45
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Jiang N, Cheng T, Wang M, Chan GCF, Jin L, Li H, Sun H. Tracking iron-associated proteomes in pathogens by a fluorescence approach. Metallomics 2018; 10:77-82. [DOI: 10.1039/c7mt00275k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The high iron-dependence of Porphyromonas gingivalis, a major threat to oral health, inspired us to develop a fluorescence approach to mine its iron-associated proteome.
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Affiliation(s)
- Nan Jiang
- Department of Chemistry
- The University of Hong Kong
- Pokfulam Road
- Hong Kong SAR
- P. R. China
| | - Tianfan Cheng
- Discipline of Periodontology
- Faculty of Dentistry
- The University of Hong Kong
- Hong Kong SAR
- P. R. China
| | - Minji Wang
- Department of Chemistry
- The University of Hong Kong
- Pokfulam Road
- Hong Kong SAR
- P. R. China
| | - Godfrey Chi-Fung Chan
- Department of Paediatrics and Adolescent Medicine
- Li Ka Shing Faculty of Medicine
- The University of Hong Kong
- Pokfulam
- Hong Kong
| | - Lijian Jin
- Discipline of Periodontology
- Faculty of Dentistry
- The University of Hong Kong
- Hong Kong SAR
- P. R. China
| | - Hongyan Li
- Department of Chemistry
- The University of Hong Kong
- Pokfulam Road
- Hong Kong SAR
- P. R. China
| | - Hongzhe Sun
- Department of Chemistry
- The University of Hong Kong
- Pokfulam Road
- Hong Kong SAR
- P. R. China
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46
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Razzano V, Paolino M, Reale A, Giuliani G, Donati A, Giorgi G, Artusi R, Caselli G, Visintin M, Makovec F, Battiato S, Samperi F, Villafiorita-Monteleone F, Botta C, Cappelli A. Poly-histidine grafting leading to fishbone-like architectures. RSC Adv 2018; 8:8638-8656. [PMID: 35539867 PMCID: PMC9078612 DOI: 10.1039/c8ra00315g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 02/17/2018] [Indexed: 11/21/2022] Open
Abstract
A small series of Morita–Baylis–Hillman derivatives was synthesized and made to react with N-acetylhexahistidine to give polymeric materials characterized by the presence of biadduct residues.
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47
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Lai YT, Yang Y, Hu L, Cheng T, Chang YY, Koohi-Moghadam M, Wang Y, Xia J, Wang J, Li H, Sun H. Integration of fluorescence imaging with proteomics enables visualization and identification of metallo-proteomes in living cells. Metallomics 2017; 9:38-47. [PMID: 27830853 DOI: 10.1039/c6mt00169f] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Metalloproteins account for nearly one-third of proteins in proteomes. To date, the identification of metalloproteins relies mainly on protein purification and the subsequent characterization of bound metals, which often leads to losses of metal ions bound weakly and transiently. Herein, we developed a strategy to visualize and subsequently identify endogenous metalloproteins and metal-binding proteins in living cells via integration of fluorescence imaging with proteomics. We synthesized a "metal-tunable" fluorescent probe (denoted as Mn+-TRACER) that rapidly enters cells to target proteins with 4-40 fold fluorescence enhancements. By using Ni2+-TRACER as an example, we demonstrate the feasibility of tracking Ni2+-binding proteins in vitro, while cellular small molecules exhibit negligible interference on the labeling. We identified 44 Ni2+-binding proteins from microbes using Helicobacter pylori as a showcase. We further applied Cu2+-TRACER to mammalian cells and found 54 Cu2+-binding proteins. The strategy we report here provides a great opportunity to track various endogenous metallo-proteomes and to mine potential targets of metallodrugs.
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Affiliation(s)
- Yau-Tsz Lai
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, P. R. China.
| | - Ya Yang
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, P. R. China.
| | - Ligang Hu
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, P. R. China.
| | - Tianfan Cheng
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, P. R. China.
| | - Yuen-Yan Chang
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, P. R. China.
| | - Mohamad Koohi-Moghadam
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, P. R. China.
| | - Yuchuan Wang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, P. R. China
| | - Jiang Xia
- Department of Chemistry, The Chinese University of Hong Kong, Hong Kong, P. R. China
| | - Junwen Wang
- Center for Individualized Medicine & Department of Health Sciences Research, Mayo Clinic, Scottsdale, AZ 85259 USA and Department of Biomedical Informatics, Arizona State University, Scottsdale, AZ 85259 USA
| | - Hongyan Li
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, P. R. China.
| | - Hongzhe Sun
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, P. R. China.
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48
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Razzano V, Paolino M, Reale A, Giuliani G, Artusi R, Caselli G, Visintin M, Makovec F, Donati A, Villafiorita-Monteleone F, Botta C, Cappelli A. Development of Imidazole-Reactive Molecules Leading to a New Aggregation-Induced Emission Fluorophore Based on the Cinnamic Scaffold. ACS OMEGA 2017; 2:5453-5459. [PMID: 31457813 PMCID: PMC6644839 DOI: 10.1021/acsomega.7b00789] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 08/21/2017] [Indexed: 06/10/2023]
Abstract
In order to obtain new fluorophores potentially useful in imidazole labeling and subsequent conjugation, a small series of Morita-Baylis-Hillman acetates (3a-c) was designed, synthesized, and reacted with imidazole. The optical properties of the corresponding imidazole derivatives 4a-c were analyzed both in solution and in the solid state. Although the solutions display a very weak emission, the powders show a blue emission, particularly enhanced in the case of compound 4c possessing two methoxy groups in the cinnamic scaffold. The photophysical study confirmed the hypothesis that the molecular rigidity of the solid state enhances the emission properties of these compounds by triggering the restriction of intramolecular motions, paving the way for their applications in fluorogenic labeling.
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Affiliation(s)
- Vincenzo Razzano
- Dipartimento
di Biotecnologie, Chimica e Farmacia and European Research Centre
for Drug Discovery and Development, Università
di Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Marco Paolino
- Dipartimento
di Biotecnologie, Chimica e Farmacia and European Research Centre
for Drug Discovery and Development, Università
di Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Annalisa Reale
- Dipartimento
di Biotecnologie, Chimica e Farmacia and European Research Centre
for Drug Discovery and Development, Università
di Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Germano Giuliani
- Dipartimento
di Biotecnologie, Chimica e Farmacia and European Research Centre
for Drug Discovery and Development, Università
di Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Roberto Artusi
- Rottapharm
Biotech S.p.A., Via Valosa
di Sopra 9, 20900 Monza, Italy
| | | | - Michela Visintin
- Rottapharm
Biotech S.p.A., Via Valosa
di Sopra 9, 20900 Monza, Italy
| | - Francesco Makovec
- Rottapharm
Biotech S.p.A., Via Valosa
di Sopra 9, 20900 Monza, Italy
| | - Alessandro Donati
- Dipartimento
di Biotecnologie, Chimica e Farmacia and European Research Centre
for Drug Discovery and Development, Università
di Siena, Via A. Moro 2, 53100 Siena, Italy
| | | | - Chiara Botta
- Istituto
per lo Studio delle Macromolecole (CNR), Via A. Corti 12, 20133 Milano, Italy
| | - Andrea Cappelli
- Dipartimento
di Biotecnologie, Chimica e Farmacia and European Research Centre
for Drug Discovery and Development, Università
di Siena, Via A. Moro 2, 53100 Siena, Italy
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49
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Wang Y, Hu L, Xu F, Quan Q, Lai YT, Xia W, Yang Y, Chang YY, Yang X, Chai Z, Wang J, Chu IK, Li H, Sun H. Integrative approach for the analysis of the proteome-wide response to bismuth drugs in Helicobacter pylori. Chem Sci 2017. [PMID: 28626571 PMCID: PMC5471454 DOI: 10.1039/c7sc00766c] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
An integrative metalloproteomic approach to unveil the role of antimicrobial metals in general using bismuth as an example.
Bismuth drugs, despite being clinically used for decades, surprisingly remain in use and effective for the treatment of Helicobacter pylori infection, even for resistant strains when co-administrated with antibiotics. However, the molecular mechanisms underlying the clinically sustained susceptibility of H. pylori to bismuth drugs remain elusive. Herein, we report that integration of in-house metalloproteomics and quantitative proteomics allows comprehensive uncovering of the bismuth-associated proteomes, including 63 bismuth-binding and 119 bismuth-regulated proteins from Helicobacter pylori, with over 60% being annotated with catalytic functions. Through bioinformatics analysis in combination with bioassays, we demonstrated that bismuth drugs disrupted multiple essential pathways in the pathogen, including ROS defence and pH buffering, by binding and functional perturbation of a number of key enzymes. Moreover, we discovered that HpDnaK may serve as a new target of bismuth drugs to inhibit bacterium-host cell adhesion. The integrative approach we report, herein, provides a novel strategy to unveil the molecular mechanisms of antimicrobial metals against pathogens in general. This study sheds light on the design of new types of antimicrobial agents with multiple targets to tackle the current crisis of antimicrobial resistance.
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Affiliation(s)
- Yuchuan Wang
- Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , P. R. China . .,School of Chemistry , Sun Yat-sen University , Guangzhou , P. R. China
| | - Ligang Hu
- Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , P. R. China .
| | - Feng Xu
- Center for Genome Sciences , The University of Hong Kong , Hong Kong , P. R. China
| | - Quan Quan
- Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , P. R. China .
| | - Yau-Tsz Lai
- Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , P. R. China .
| | - Wei Xia
- School of Chemistry , Sun Yat-sen University , Guangzhou , P. R. China
| | - Ya Yang
- Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , P. R. China .
| | - Yuen-Yan Chang
- Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , P. R. China .
| | - Xinming Yang
- Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , P. R. China .
| | - Zhifang Chai
- CAS Key Laboratory of Nuclear Analytical Techniques , Institute of High Energy Physics , Chinese Academy of Sciences , Beijing , P. R. China
| | - Junwen Wang
- Center for Genome Sciences , The University of Hong Kong , Hong Kong , P. R. China.,Center for Individualized Medicine , Department of Health Sciences Research , Mayo Clinic , Scottsdale , AZ 85259 , USA.,Department of Biomedical Informatics , Arizona State University , Scottsdale , AZ 85259 , USA
| | - Ivan K Chu
- Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , P. R. China .
| | - Hongyan Li
- Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , P. R. China .
| | - Hongzhe Sun
- Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , P. R. China . .,School of Chemistry , Sun Yat-sen University , Guangzhou , P. R. China
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Chang YY, Cheng T, Yang X, Jin L, Sun H, Li H. Functional disruption of peroxiredoxin by bismuth antiulcer drugs attenuates Helicobacter pylori survival. J Biol Inorg Chem 2017; 22:673-683. [PMID: 28361362 DOI: 10.1007/s00775-017-1452-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 03/21/2017] [Indexed: 01/26/2023]
Abstract
Bismuth drugs have been used clinically to treat infections from Helicobacter pylori, a pathogen that is strongly related to gastrointestinal diseases even stomach cancer. Despite extensive studies, the mechanisms of action of bismuth drugs are not fully understood. Alkyl hydroperoxide reductase subunit C (AhpC) is the most abundant 2-cysteine peroxiredoxin, crucial for H. pylori survival in the host by defense of oxidative stress. Herein we show that a Bi(III) antiulcer drug (CBS) binds to the highly conserved cysteine residues (Cys49 and Cys169) with a dissociation constant (K d) of Bi(III) to AhpC of 3.0 (±1.0) × 10-24 M. Significantly the interaction of CBS with AhpC disrupts the peroxiredoxin and chaperone activities of the enzyme both in vitro and in bacterial cells, leading to attenuated bacterial survival. Moreover, using a home-made fluorescent probe, we demonstrate that Bi(III) also perturbs AhpC relocation between the cytoplasm and membrane region in decomposing the exogenous ROS. Our study suggests that disruption of redox homeostasis by bismuth drugs via interaction with key enzymes such as AhpC contributes to their antimicrobial activity.
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Affiliation(s)
- Yuen-Yan Chang
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, People's Republic of China
| | - Tianfan Cheng
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, People's Republic of China.,Faculty of Dentistry, The University of Hong Kong, Sai Ying Pun, Hong Kong, People's Republic of China
| | - Xinming Yang
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, People's Republic of China
| | - Lijian Jin
- Faculty of Dentistry, The University of Hong Kong, Sai Ying Pun, Hong Kong, People's Republic of China
| | - Hongzhe Sun
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, People's Republic of China.
| | - Hongyan Li
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, People's Republic of China.
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