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Chung SF, Tam SY, Wong WT, So PK, Cheong WL, Mak CW, Lee LMY, Chan PH, Wong KY, Leung YC. Fluorescently Modified NDM-1: A Versatile Drug Sensor for Rapid In Vitro β-Lactam Antibiotic and Inhibitor Screening. ACS OMEGA 2024; 9:9161-9169. [PMID: 38434906 PMCID: PMC10906033 DOI: 10.1021/acsomega.3c08117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 01/14/2024] [Accepted: 01/25/2024] [Indexed: 03/05/2024]
Abstract
We successfully developed a fluorescent drug sensor from clinically relevant New Delhi metallo-β-lactamase-1 (NDM-1). The F70 residue was chosen to be replaced with a cysteine for conjugation with thiol-reactive fluorescein-5-maleimide to form fluorescent F70Cf, where "f" refers to fluorescein-5-maleimide. Our proteolytic studies of unlabeled F70C and labeled F70Cf monitored by electrospray ionization-mass spectrometry (ESI-MS) revealed that fluorescein-5-maleimide was specifically linked to C70 in 1:1 mole ratio (F70C:fluorophore). Our drug sensor (F70Cf) can detect the β-lactam antibiotics cefotaxime and cephalothin by giving stronger fluorescence in the initial binding phase and then declining fluorescence signals as a result of the hydrolysis of the antibiotics into acid products. F70Cf can also detect non-β-lactam inhibitors (e.g., l-captopril, d-captopril, dl-thiorphan, and thanatin). In all cases, F70Cf exhibits stronger fluorescence due to inhibitor binding and subsequently sustained fluorescence signals in a later stage. Native ESI-MS results show that F70Cf can bind to all four inhibitors. Moreover, our drug sensor is compatible with a high-throughput microplate reader and has the capability to perform in vitro drug screening.
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Affiliation(s)
- Sai-Fung Chung
- State
Key Laboratory of Chemical Biology and Drug Discovery, Department
of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong, China
- Lo
Ka Chung Research Centre for Natural Anti-Cancer Drug Development, The Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong, China
| | - Suet-Ying Tam
- State
Key Laboratory of Chemical Biology and Drug Discovery, Department
of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong, China
- Lo
Ka Chung Research Centre for Natural Anti-Cancer Drug Development, The Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong, China
| | - Wai-Ting Wong
- State
Key Laboratory of Chemical Biology and Drug Discovery, Department
of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong, China
| | - Pui-Kin So
- State
Key Laboratory of Chemical Biology and Drug Discovery, Department
of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong, China
| | - Wing-Lam Cheong
- Department
of Science, School of Science and Technology, Hong Kong Metropolitan University, Hong Kong, Hong Kong
| | - Chun-Wing Mak
- State
Key Laboratory of Chemical Biology and Drug Discovery, Department
of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong, China
| | - Leo Man-Yuen Lee
- State
Key Laboratory of Chemical Biology and Drug Discovery, Department
of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong, China
| | - Pak-Ho Chan
- State
Key Laboratory of Chemical Biology and Drug Discovery, Department
of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong, China
| | - Kwok-Yin Wong
- State
Key Laboratory of Chemical Biology and Drug Discovery, Department
of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong, China
| | - Yun-Chung Leung
- State
Key Laboratory of Chemical Biology and Drug Discovery, Department
of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong, China
- Lo
Ka Chung Research Centre for Natural Anti-Cancer Drug Development, The Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong, China
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2
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Moradi Y, Lee JSH, Armani AM. Detecting Disruption of HER2 Membrane Protein Organization in Cell Membranes with Nanoscale Precision. ACS Sens 2024; 9:52-61. [PMID: 37955934 PMCID: PMC10825864 DOI: 10.1021/acssensors.3c01437] [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: 07/13/2023] [Revised: 10/25/2023] [Accepted: 10/30/2023] [Indexed: 11/14/2023]
Abstract
The spatiotemporal organization of proteins within the cell membrane can affect numerous biological functions, including cell signaling, communication, and transportation. Deviations from normal spatial arrangements have been observed in various diseases, and a better understanding of this process is a key stepping stone to advancing development of clinical interventions. However, given the nanometer length scales involved, detecting these subtle changes has primarily relied on complex super-resolution and single-molecule imaging methods. In this work, we demonstrate an alternative fluorescent imaging strategy for detecting protein organization based on a material that exhibits a unique photophysical behavior known as aggregation-induced emission (AIE). Organic AIE molecules have an increase in emission signal when they are in close proximity, and the molecular motion is restricted. This property simultaneously addresses the high background noise and low detection signal that limit conventional widefield fluorescent imaging. To demonstrate the potential of this approach, the fluorescent molecule sensor is conjugated to a human epidermal growth factor receptor 2 (HER2)-specific antibody and used to investigate the spatiotemporal behavior of HER2 clustering in the membrane of HER2-overexpressing breast cancer cells. Notably, the disruption of HER2 clusters in response to an FDA-approved monoclonal antibody therapeutic (Trastuzumab) is successfully detected using a simple widefield fluorescent microscope. While the sensor demonstrated here is optimized for sensing HER2 clustering, it is an easily adaptable platform. Moreover, given the compatibility with widefield imaging, the system has the potential to be used with high-throughput imaging techniques, accelerating investigations into membrane protein spatiotemporal organization.
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Affiliation(s)
- Yasaman Moradi
- Mork
Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, California 90089, United States
- Ellison
Institute of Technology, Los Angeles, California 90064, United States
| | - Jerry S. H. Lee
- Mork
Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, California 90089, United States
- Ellison
Institute of Technology, Los Angeles, California 90064, United States
- Keck
School of Medicine, University of Southern
California, Los Angeles, California 90089, United States
| | - Andrea M. Armani
- Mork
Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, California 90089, United States
- Ellison
Institute of Technology, Los Angeles, California 90064, United States
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3
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Jia L, Wang W, Yan Y, Hu R, Sang J, Zhao W, Wang Y, Wei W, Cui W, Yang G, Lu F, Zheng J, Liu F. General Aggregation-Induced Emission Probes for Amyloid Inhibitors with Dual Inhibition Capacity against Amyloid β-Protein and α-Synuclein. ACS APPLIED MATERIALS & INTERFACES 2020; 12:31182-31194. [PMID: 32584021 DOI: 10.1021/acsami.0c07745] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Amyloid self-assembly is pathologically linked to many neurodegenerative diseases, including Alzheimer's disease (AD) and Parkinson's disease (PD). While many inhibitors have been developed individually for specific amyloid proteins, there are a few effective platforms to screen on a large scale general amyloid inhibitors against different amyloid proteins. Herein, we developed a new class of amyloid inhibitor probes by site-specific conjugation of aggregation-induced emission (AIE) molecules with amyloid proteins (i.e., AIE@amyloid probes) to realize a high-throughput screening of small-molecule inhibitors. Optimization of site-specific AIE conjugation with two amyloid proteins, amyloid-β protein (Aβ) and α-synuclein (αSN), enabled us to retain their high amyloidogenic properties; i.e., AIE-amyloid probes alone exhibited strong fluorescence due to amyloid-like aggregation, but they showed no fluorescence in the presence of amyloid inhibitors to prevent amyloid aggregation. From integration of AIE@amyloid probes and computational virtual screening from a large drug database, it was found that tolcapone possessed a dual inhibition against the aggregation and cytotoxicity of both Aβ and αSN. More importantly, tolcapone significantly improved the spatial cognition and recognition of Aβ-treated mice. This work represents an innovative attempt to design an AIE-based anti-amyloid drug platform for identifying new small-molecule inhibitors against amyloidogenesis in both AD and PD or other amyloid diseases.
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Affiliation(s)
- Longgang Jia
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
- College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - Wenjuan Wang
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Yushan Yan
- Ningbo Key Laboratory of Behavioral Neuroscience, Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Zhejiang 315211, China
| | - Rui Hu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Jingcheng Sang
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Wenping Zhao
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Ying Wang
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Wei Wei
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Wei Cui
- Ningbo Key Laboratory of Behavioral Neuroscience, Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Zhejiang 315211, China
| | - Guoqiang Yang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Fuping Lu
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Jie Zheng
- Department of Chemical and Biomolecular Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Fufeng Liu
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
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4
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Xie S, Wong AYH, Chen S, Tang BZ. Fluorogenic Detection and Characterization of Proteins by Aggregation‐Induced Emission Methods. Chemistry 2019; 25:5824-5847. [DOI: 10.1002/chem.201805297] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Indexed: 12/18/2022]
Affiliation(s)
- Sheng Xie
- Ming Wai Lau Centre for Reparative MedicineKarolinska Institutet Hong Kong S.A.R. China
| | - Alex Y. H. Wong
- Ming Wai Lau Centre for Reparative MedicineKarolinska Institutet Hong Kong S.A.R. China
| | - Sijie Chen
- Ming Wai Lau Centre for Reparative MedicineKarolinska Institutet Hong Kong S.A.R. China
| | - Ben Zhong Tang
- Department of Chemistry, Hong Kong Branch of Chinese National, Engineering Research Center for Tissue Restoration and ReconstructionInstitute of Molecular Functional MaterialsState Key Laboratory of NeuroscienceDivision of Biomedical Engineering, and Division of Life Science, HKUST-Shenzhen Research InstituteThe Hong Kong University of Science and Technology, Kowloon Hong Kong S.A.R. China
- NSFC Center for Luminescence from Molecular AggregatesSCUT-HKUST Joint Research InstituteState Key Laboratory of Luminescent Materials and DevicesSouth China University of Technology Guangzhou 510640 P.R. China
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5
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Law KH, Tsang MW, Wong YK, Tsang MS, Lau PY, Wong KY, Ho KP, Leung YC. Efficient production of secretory Streptomyces clavuligerus β-lactamase inhibitory protein (BLIP) in Pichia pastoris. AMB Express 2018; 8:64. [PMID: 29679312 PMCID: PMC5910447 DOI: 10.1186/s13568-018-0586-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Accepted: 04/05/2018] [Indexed: 11/10/2022] Open
Abstract
β-Lactamase inhibitory protein (BLIP), a low molecular weight protein from Streptomyces clavuligerus, has a wide range of potential applications in the fields of biotechnology and pharmaceutical industry because of its tight interaction with and potent inhibition on clinically important class A β-lactamases. To meet the demands for considerable amount of highly pure BLIP, this study aimed at developing an efficient expression system in eukaryotic Pichia pastoris (a methylotrophic yeast) for production of BLIP. With methanol induction, recombinant BLIP was overexpressed in P. pastoris X-33 and secreted into the culture medium. A high yield of ~ 300 mg/L culture secretory BLIP recovered from the culture supernatant without purification was found to be > 90% purity. The recombinant BLIP was fully active and showed an inhibition constant (Ki) for TEM-1 β-lactamase (0.55 ± 0.07 nM) comparable to that of the native S. clavuligerus-expressed BLIP (0.5 nM). Yeast-produced BLIP in combination with ampicillin effectively inhibited the growth of β-lactamase-producing Gram-positive Bacillus. Our approach of expressing secretory BLIP in P. pastoris gave 71- to 1200-fold more BLIP with high purity than the other conventional methods, allowing efficient production of large amount of highly pure BLIP, which merits fundamental science studies, drug development and biotechnological applications.
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Shi X, Yu CYY, Su H, Kwok RTK, Jiang M, He Z, Lam JWY, Tang BZ. A red-emissive antibody-AIEgen conjugate for turn-on and wash-free imaging of specific cancer cells. Chem Sci 2017; 8:7014-7024. [PMID: 30155197 PMCID: PMC6103257 DOI: 10.1039/c7sc01054k] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 08/07/2017] [Indexed: 12/27/2022] Open
Abstract
An antibody-AIEgen conjugate is designed and developed as a "turn-on" fluorescent probe for wash-free specific cancer cell imaging. The cetuximab-conjugated AIEgen shows red fluorescence only when it is internalized and accumulated in cancer cells with overexpressed epidermal growth factor receptor through endocytosis. The probe first lights up the lysosomes. After hydrolysis, its residue is accumulated in mitochondria, making them highly emissive with a long cell retention time. Compared with conventional "always-on" fluorescent probes, the antibody-AIEgen conjugate exhibits a very good image contrast during wash-free cancer cell imaging and less interference from normal cells. To the best of our knowledge, this is the first time "turn-on" antibody-AIEgen conjugates have been reported. This new strategy can be further extended to many proteins and water-soluble AIEgens, and many of their potential applications such as real-time tracking of cell dynamics and cancer theranostics will be explored. The present work is expected to inspire more marvellous research in the fields of AIE and cancer imaging.
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Affiliation(s)
- Xiujuan Shi
- Department of Chemical and Biological Engineering , Department of Chemistry , Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , State Key Laboratory of Molecular Neuroscience , Institute of Molecular Functional Materials , Division of Life Science , The Hong Kong University of Science & Technology (HKUST) , Clear Water Bay , Kowloon , Hong Kong , China
- HKUST-Shenzhen Research Institute , No. 9 Yuexing 1st RD, South Area, Hi-Tech Park, Nanshan , Shenzhen 518057 , China
| | - Chris Y Y Yu
- Department of Chemical and Biological Engineering , Department of Chemistry , Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , State Key Laboratory of Molecular Neuroscience , Institute of Molecular Functional Materials , Division of Life Science , The Hong Kong University of Science & Technology (HKUST) , Clear Water Bay , Kowloon , Hong Kong , China
- HKUST-Shenzhen Research Institute , No. 9 Yuexing 1st RD, South Area, Hi-Tech Park, Nanshan , Shenzhen 518057 , China
| | - Huifang Su
- Department of Chemical and Biological Engineering , Department of Chemistry , Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , State Key Laboratory of Molecular Neuroscience , Institute of Molecular Functional Materials , Division of Life Science , The Hong Kong University of Science & Technology (HKUST) , Clear Water Bay , Kowloon , Hong Kong , China
- HKUST-Shenzhen Research Institute , No. 9 Yuexing 1st RD, South Area, Hi-Tech Park, Nanshan , Shenzhen 518057 , China
| | - Ryan T K Kwok
- Department of Chemical and Biological Engineering , Department of Chemistry , Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , State Key Laboratory of Molecular Neuroscience , Institute of Molecular Functional Materials , Division of Life Science , The Hong Kong University of Science & Technology (HKUST) , Clear Water Bay , Kowloon , Hong Kong , China
- HKUST-Shenzhen Research Institute , No. 9 Yuexing 1st RD, South Area, Hi-Tech Park, Nanshan , Shenzhen 518057 , China
| | - Meijuan Jiang
- Department of Chemical and Biological Engineering , Department of Chemistry , Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , State Key Laboratory of Molecular Neuroscience , Institute of Molecular Functional Materials , Division of Life Science , The Hong Kong University of Science & Technology (HKUST) , Clear Water Bay , Kowloon , Hong Kong , China
- HKUST-Shenzhen Research Institute , No. 9 Yuexing 1st RD, South Area, Hi-Tech Park, Nanshan , Shenzhen 518057 , China
| | - Zikai He
- Department of Chemical and Biological Engineering , Department of Chemistry , Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , State Key Laboratory of Molecular Neuroscience , Institute of Molecular Functional Materials , Division of Life Science , The Hong Kong University of Science & Technology (HKUST) , Clear Water Bay , Kowloon , Hong Kong , China
- HKUST-Shenzhen Research Institute , No. 9 Yuexing 1st RD, South Area, Hi-Tech Park, Nanshan , Shenzhen 518057 , China
| | - Jacky W Y Lam
- Department of Chemical and Biological Engineering , Department of Chemistry , Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , State Key Laboratory of Molecular Neuroscience , Institute of Molecular Functional Materials , Division of Life Science , The Hong Kong University of Science & Technology (HKUST) , Clear Water Bay , Kowloon , Hong Kong , China
- HKUST-Shenzhen Research Institute , No. 9 Yuexing 1st RD, South Area, Hi-Tech Park, Nanshan , Shenzhen 518057 , China
| | - Ben Zhong Tang
- Department of Chemical and Biological Engineering , Department of Chemistry , Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , State Key Laboratory of Molecular Neuroscience , Institute of Molecular Functional Materials , Division of Life Science , The Hong Kong University of Science & Technology (HKUST) , Clear Water Bay , Kowloon , Hong Kong , China
- HKUST-Shenzhen Research Institute , No. 9 Yuexing 1st RD, South Area, Hi-Tech Park, Nanshan , Shenzhen 518057 , China
- Guangdong Innovative Research Team , SCUT-HKUST Joint Research Laboratory , State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , Guangzhou 510640 , China
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