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Cheppali SK, Dharan R, Katzenelson R, Sorkin R. Supported Natural Membranes on Microspheres for Protein-Protein Interaction Studies. ACS APPLIED MATERIALS & INTERFACES 2022; 14:49532-49541. [PMID: 36306148 DOI: 10.1021/acsami.2c13095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Multiple biological and pathological processes, such as signaling, cell-cell communication, and infection by various viruses, occur at the plasma membrane. The eukaryotic plasma membrane is made up of thousands of different lipids, membrane proteins, and glycolipids, and its composition is dynamic and constantly changing. Due to the central importance of membranes on the one hand and their complexity on the other, membrane model systems are instrumental for interrogating membrane-related biological processes. Here, we develop a new tool for protein-membrane interaction studies. Our method is based on natural membranes obtained from extracellular vesicles. We form membrane bilayers supported on polystyrene microspheres that can be trapped and manipulated using optical tweezers. This method allows working with membrane proteins of interest within a background of native membrane components where their correct orientation is preserved. We demonstrate our method's applicability by successfully measuring the interaction forces between the Spike protein of SARS-CoV-2 and its human receptor, ACE2. We further show that these interactions are blocked by the addition of an antibody against the receptor binding domain of the Spike protein. Our approach is versatile and broadly applicable for various membrane biology and biophysics questions.
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Affiliation(s)
- Sudheer K Cheppali
- Raymond and Beverly Sackler Faculty of Exact Sciences, School of Chemistry, Tel Aviv University, Tel Aviv, Israel6997801
- Center for Physics and Chemistry of Living Systems, Tel Aviv University, Tel Aviv, Israel6997801
- Center for Light-Matter Interaction, Tel Aviv University, Tel Aviv, Israel6997801
| | - Raviv Dharan
- Raymond and Beverly Sackler Faculty of Exact Sciences, School of Chemistry, Tel Aviv University, Tel Aviv, Israel6997801
- Center for Physics and Chemistry of Living Systems, Tel Aviv University, Tel Aviv, Israel6997801
- Center for Light-Matter Interaction, Tel Aviv University, Tel Aviv, Israel6997801
| | - Roni Katzenelson
- Raymond and Beverly Sackler Faculty of Exact Sciences, School of Chemistry, Tel Aviv University, Tel Aviv, Israel6997801
- Center for Physics and Chemistry of Living Systems, Tel Aviv University, Tel Aviv, Israel6997801
- Center for Light-Matter Interaction, Tel Aviv University, Tel Aviv, Israel6997801
| | - Raya Sorkin
- Raymond and Beverly Sackler Faculty of Exact Sciences, School of Chemistry, Tel Aviv University, Tel Aviv, Israel6997801
- Center for Physics and Chemistry of Living Systems, Tel Aviv University, Tel Aviv, Israel6997801
- Center for Light-Matter Interaction, Tel Aviv University, Tel Aviv, Israel6997801
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Ghosh S, Mohamed Z, Shin JH, Bint E Naser SF, Bali K, Dörr T, Owens RM, Salleo A, Daniel S. Impedance sensing of antibiotic interactions with a pathogenic E. coli outer membrane supported bilayer. Biosens Bioelectron 2022; 204:114045. [PMID: 35180690 PMCID: PMC9526520 DOI: 10.1016/j.bios.2022.114045] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 01/19/2022] [Accepted: 01/25/2022] [Indexed: 11/18/2022]
Abstract
Antibiotic resistance is a growing global health concern due to the decreasing number of antibiotics available for therapeutic use as more drug-resistant bacteria develop. Changes in the membrane properties of Gram-negative bacteria can influence their response to antibiotics and give rise to resistance. Thus, understanding the interactions between the bacterial membrane and antibiotics is important for elucidating microbial membrane properties to use for designing novel antimicrobial drugs. To study bacterial membrane-antibiotic interactions, we created a surface-supported planar bacterial outer membrane model on an optically-transparent, conducting polymer surface (poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS)). This model enables membrane characterization using fluorescence microscopy and electrochemical impedance spectroscopy (EIS). The membrane platform is fabricated using outer membrane vesicles (OMVs) isolated from clinically relevant Gram-negative bacteria, enterohemorrhagic Escherichia coli. This approach enables us to mimic the native components of the bacterial membrane by incorporating native lipids, membrane proteins, and lipopolysaccharides. Using EIS, we determined membrane impedance and captured membrane-antibiotic interactions using the antibiotics polymyxin B, bacitracin, and meropenem. This sensor platform incorporates aspects of the biological complexity found in bacterial outer membranes and, by doing so, offers a powerful, biomimetic approach to the study of antimicrobial drug interactions.
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Affiliation(s)
- Surajit Ghosh
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, USA
| | - Zeinab Mohamed
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, USA
| | - Jung-Ho Shin
- Weill Institute for Cell and Molecular Biology and Department of Microbiology, Cornell, University, Ithaca, NY, USA
| | | | - Karan Bali
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK
| | - Tobias Dörr
- Weill Institute for Cell and Molecular Biology and Department of Microbiology, Cornell, University, Ithaca, NY, USA
| | - Róisín M Owens
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK
| | - Alberto Salleo
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA
| | - Susan Daniel
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, USA; Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, USA.
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Uribe J, Traberg WC, Hama A, Druet V, Mohamed Z, Ooi A, Pappa AM, Huerta M, Inal S, Owens RM, Daniel S. Dual Mode Sensing of Binding and Blocking of Cancer Exosomes to Biomimetic Human Primary Stem Cell Surfaces. ACS Biomater Sci Eng 2021; 7:5585-5597. [PMID: 34802228 DOI: 10.1021/acsbiomaterials.1c01056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Cancer-derived exosomes (cEXOs) facilitate transfer of information between tumor and human primary stromal cells, favoring cancer progression. Although the mechanisms used during this information exchange are still not completely understood, it is known that binding is the initial contact established between cEXOs and cells. Hence, studying binding and finding strategies to block it are of great therapeutic value. However, such studies are challenging for a variety of reasons, including the need for human primary cell culture, the difficulty in decoupling and isolating binding from internalization and cargo delivery, and the lack of techniques to detect these specific interactions. In this work, we created a supported biomimetic stem cell membrane incorporating membrane components from human primary adipose-derived stem cells (ADSCs). We formed the supported membrane on glass and on multielectrode arrays to offer the dual option of optical or electrical detection of cEXO binding to the membrane surface. Using our platform, we show that cEXOs bind to the stem cell membrane and that binding is blocked when an antibody to integrin β1, a component of ADSC surface, is exposed to the membrane surface prior to cEXOs. To test the biological outcome of blocking this interaction, we first confirm that adding cEXOs to cultured ADSCs leads to the upregulation of vascular endothelial growth factor, a measure of proangiogenic activity. Next, when ADSCs are first blocked with anti-integrin β1 and then exposed to cEXOs, the upregulation of proangiogenic activity and cell proliferation are significantly reduced. This biomimetic membrane platform is the first cell-free label-free in vitro platform for the recapitulation and study of cEXO binding to human primary stem cells with potential for therapeutic molecule screening as it is compatible with scale-up and multiplexing.
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Affiliation(s)
- Johana Uribe
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14853-0001, United States
| | - Walther C Traberg
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge CB3 0AS, United Kingdom
| | - Adel Hama
- Biological and Environmental Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 3955, Kingdom of Saudi Arabia
| | - Victor Druet
- Biological and Environmental Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 3955, Kingdom of Saudi Arabia
| | - Zeinab Mohamed
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14853-0001, United States
| | - Amanda Ooi
- Biological and Environmental Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 3955, Kingdom of Saudi Arabia
| | - Anna-Maria Pappa
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge CB3 0AS, United Kingdom.,Department of Biomedical Engineering, Khalifa University of Science and Technology, Abu Dhabi 127788, United Arab Emirates
| | - Miriam Huerta
- School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853-5201, United States
| | - Sahika Inal
- Biological and Environmental Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 3955, Kingdom of Saudi Arabia
| | - Róisín M Owens
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge CB3 0AS, United Kingdom
| | - Susan Daniel
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14853-0001, United States.,School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853-5201, United States
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