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Wei X, Meng J, Ma S, Li Y, Qing H, Peng X, Zhao Q. Degradation protection and enhanced biocompatibility of Mg alloys pretreated with plasma proteins. J Biomed Mater Res A 2024; 112:1004-1014. [PMID: 38327244 DOI: 10.1002/jbm.a.37681] [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: 12/28/2022] [Revised: 01/17/2024] [Accepted: 01/19/2024] [Indexed: 02/09/2024]
Abstract
After implantation of the Mg alloy in the human body, the adsorption of plasma protein on surface will cause a series of cell reactions and affect the degradation of Mg alloys. Herein, in vitro biological reactions of the ZK60 and AZ31 Mg alloys are analyzed in plasma protein environment. Combined with mass spectrometry analysis of the type of adsorbed proteins, it is shown that proteins such as fibrinogen, vitronectin, fibronectin, and prothrombin are prone to get adsorbed on the surface of the alloys than other proteins, leading to the promotion of MG63 cell adhesion and proliferation. The effect of selected proteins (fibrinogen, fibronectin, and prothrombin) on degradation of ZK60 and AZ31 Mg alloys is investigated using immersion tests. The degradation of AZ31 Mg alloy is significantly restrained with the presence of proteins. This is due to the protein adsorption effect on the sample surface. The molecular dynamics simulation results indicate that both fibrinogen and fibronectin tend to adsorb onto the AZ31 rather than ZK60, forming a stable protein layer on the AZ31 Mg alloy retarding the degradation of the samples. As to ZK60 alloy, the addition of protein inhibits the degradation in the short term, however, the degradation increases after a long time of immersion. This phenomenon is particularly pronounced in fibronectin solution.
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Affiliation(s)
- Xian Wei
- School of Life Science, Beijing Institute of Technology, Beijing, China
- School of Physics, Beijing Institute of Technology, Beijing, China
- Department of Science, Taiyuan Institute of Technology, Taiyuan, China
| | - Jiajia Meng
- School of Physics, Beijing Institute of Technology, Beijing, China
| | - Sujie Ma
- School of Physics, Beijing Institute of Technology, Beijing, China
| | - Yanchun Li
- School of Physics, Beijing Institute of Technology, Beijing, China
| | - Hong Qing
- School of Life Science, Beijing Institute of Technology, Beijing, China
| | - Xubiao Peng
- School of Physics, Beijing Institute of Technology, Beijing, China
| | - Qing Zhao
- School of Physics, Beijing Institute of Technology, Beijing, China
- National Key Laboratory of Science and Technology on Materials under Shock and Impact, Beijing, China
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2
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Ke Y, Meng H, Du Z, Zhang W, Ma Q, Huang Y, Cui L, Lei Y, Yang Z. Bioinspired super-hydrophilic zwitterionic polymer armor combats thrombosis and infection of vascular catheters. Bioact Mater 2024; 37:493-504. [PMID: 38698921 PMCID: PMC11063950 DOI: 10.1016/j.bioactmat.2024.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Revised: 04/01/2024] [Accepted: 04/01/2024] [Indexed: 05/05/2024] Open
Abstract
Thrombosis and infection are two major complications associated with central venous catheters (CVCs), which significantly contribute to morbidity and mortality. Antifouling coating strategies currently represent an efficient approach for addressing such complications. However, existing antifouling coatings have limitations in terms of both duration and effectiveness. Herein, we propose a durable zwitterionic polymer armor for catheters. This armor is realized by pre-coating with a robust phenol-polyamine film inspired by insect sclerotization, followed by grafting of poly-2-methacryloyloxyethyl phosphorylcholine (pMPC) via in-situ radical polymerization. The resulting pMPC coating armor exhibits super-hydrophilicity, thereby forming a highly hydrated shell that effectively prevents bacterial adhesion and inhibits the adsorption and activation of fibrinogen and platelets in vitro. In practical applications, the armored catheters significantly reduced inflammation and prevented biofilm formation in a rat subcutaneous infection model, as well as inhibited thrombus formation in a rabbit jugular vein model. Overall, our robust zwitterionic polymer coating presents a promising solution for reducing infections and thrombosis associated with vascular catheters.
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Affiliation(s)
- You Ke
- Dongguan Key Laboratory of Smart Biomaterials and Regenerative Medicine, The Tenth Affiliated Hospital, Southern Medical University, Dongguan, Guangdong, 523000, China
- School of Materials Science and Engineering, Key Lab of Advanced Technology for Materials of Education Ministry, Southwest Jiaotong University, Chengdu, Sichuan, 610031, China
| | - Haotian Meng
- Dongguan Key Laboratory of Smart Biomaterials and Regenerative Medicine, The Tenth Affiliated Hospital, Southern Medical University, Dongguan, Guangdong, 523000, China
- School of Materials Science and Engineering, Key Lab of Advanced Technology for Materials of Education Ministry, Southwest Jiaotong University, Chengdu, Sichuan, 610031, China
| | - Zeyu Du
- Dongguan Key Laboratory of Smart Biomaterials and Regenerative Medicine, The Tenth Affiliated Hospital, Southern Medical University, Dongguan, Guangdong, 523000, China
- School of Materials Science and Engineering, Key Lab of Advanced Technology for Materials of Education Ministry, Southwest Jiaotong University, Chengdu, Sichuan, 610031, China
| | - Wentai Zhang
- Dongguan Key Laboratory of Smart Biomaterials and Regenerative Medicine, The Tenth Affiliated Hospital, Southern Medical University, Dongguan, Guangdong, 523000, China
| | - Qing Ma
- Dongguan Key Laboratory of Smart Biomaterials and Regenerative Medicine, The Tenth Affiliated Hospital, Southern Medical University, Dongguan, Guangdong, 523000, China
- School of Materials Science and Engineering, Key Lab of Advanced Technology for Materials of Education Ministry, Southwest Jiaotong University, Chengdu, Sichuan, 610031, China
| | - Yuting Huang
- Dongguan Key Laboratory of Smart Biomaterials and Regenerative Medicine, The Tenth Affiliated Hospital, Southern Medical University, Dongguan, Guangdong, 523000, China
| | - Linxian Cui
- Geriatric Diseases Institute of Chengdu/Cancer Prevention and Treatment Institute of Chengdu, Department of Cardiology, Chengdu Fifth People's Hospital (The Second Clinical Medical College, Affiliated Fifth People's Hospital of Chengdu University of Traditional Chinese Medicine), Chengdu, Sichuan, 611137, China
| | - Yifeng Lei
- The Institute of Technological Science, Wuhan University, Wuhan, 430072, China
| | - Zhilu Yang
- Dongguan Key Laboratory of Smart Biomaterials and Regenerative Medicine, The Tenth Affiliated Hospital, Southern Medical University, Dongguan, Guangdong, 523000, China
- School of Materials Science and Engineering, Key Lab of Advanced Technology for Materials of Education Ministry, Southwest Jiaotong University, Chengdu, Sichuan, 610031, China
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3
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Yang XD, Gong B, Chen W, Chen JJ, Qian C, Lu R, Min Y, Jiang T, Li L, Yu HQ. In Situ Quantitative Monitoring of Adsorption from Aqueous Phase by UV-vis Spectroscopy: Implication for Understanding of Heterogeneous Processes. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2402732. [PMID: 38923364 DOI: 10.1002/advs.202402732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 06/05/2024] [Indexed: 06/28/2024]
Abstract
The development of in situ techniques to quantitatively characterize the heterogeneous reactions is essential for understanding physicochemical processes in aqueous phase. In this work, a new approach coupling in situ UV-vis spectroscopy with a two-step algorithm strategy is developed to quantitatively monitor heterogeneous reactions in a compact closed-loop incorporation. The algorithm involves the inverse adding-doubling method for light scattering correction and the multivariate curve resolution-alternating least squares (MCR-ALS) method for spectral deconvolution. Innovatively, theoretical spectral simulations are employed to connect MCR-ALS solutions with chemical molecular structural evolution without prior information for reference spectra. As a model case study, the aqueous adsorption kinetics of bisphenol A onto polyamide microparticles are successfully quantified in a one-step UV-vis spectroscopic measurement. The practical applicability of this approach is confirmed by rapidly screening a superior adsorbent from commercial materials for antibiotic wastewater adsorption treatment. The demonstrated capabilities are expected to extend beyond monitoring adsorption systems to other heterogeneous reactions, significantly advancing UV-vis spectroscopic techniques toward practical integration into automated experimental platforms for probing aqueous chemical processes and beyond.
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Affiliation(s)
- Xu-Dan Yang
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Bo Gong
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Wei Chen
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Jie-Jie Chen
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Chen Qian
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Rui Lu
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Yuan Min
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Ting Jiang
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Liang Li
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Han-Qing Yu
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
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4
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Kronek J, Minarčíková A, Kroneková Z, Majerčíková M, Strasser P, Teasdale I. Poly(2-isopropenyl-2-oxazoline) as a Versatile Functional Polymer for Biomedical Applications. Polymers (Basel) 2024; 16:1708. [PMID: 38932057 PMCID: PMC11207257 DOI: 10.3390/polym16121708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 04/16/2024] [Accepted: 05/23/2024] [Indexed: 06/28/2024] Open
Abstract
Functional polymers play an important role in various biomedical applications. From many choices, poly(2-isopropenyl-2-oxazoline) (PIPOx) represents a promising reactive polymer with great potential in various biomedical applications. PIPOx, with pendant reactive 2-oxazoline groups, can be readily prepared in a controllable manner via several controlled/living polymerization methods, such as living anionic polymerization, atom transfer radical polymerization (ATRP), reversible addition-fragmentation transfer (RAFT) or rare earth metal-mediated group transfer polymerization. The reactivity of pendant 2-oxazoline allows selective reactions with thiol and carboxylic group-containing compounds without the presence of any catalyst. Moreover, PIPOx has been demonstrated to be a non-cytotoxic polymer with immunomodulative properties. Post-polymerization functionalization of PIPOx has been used for the preparation of thermosensitive or cationic polymers, drug conjugates, hydrogels, brush-like materials, and polymer coatings available for drug and gene delivery, tissue engineering, blood-like materials, antimicrobial materials, and many others. This mini-review covers new achievements in PIPOx synthesis, reactivity, and use in biomedical applications.
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Affiliation(s)
- Juraj Kronek
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia; (A.M.); (Z.K.); (M.M.)
| | - Alžbeta Minarčíková
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia; (A.M.); (Z.K.); (M.M.)
| | - Zuzana Kroneková
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia; (A.M.); (Z.K.); (M.M.)
| | - Monika Majerčíková
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia; (A.M.); (Z.K.); (M.M.)
| | - Paul Strasser
- Institute of Polymer Chemistry, Johannes Kepler University, Altenbergerstrasse 69, 4040 Linz, Austria; (P.S.); (I.T.)
| | - Ian Teasdale
- Institute of Polymer Chemistry, Johannes Kepler University, Altenbergerstrasse 69, 4040 Linz, Austria; (P.S.); (I.T.)
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5
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Dorchei F, Heydari A, Kroneková Z, Kronek J, Pelach M, Cseriová Z, Chorvát D, Zúñiga-Navarrete F, Rios PD, McGarrigle J, Ghani S, Isa D, Joshi I, Vasuthas K, Rokstad AMA, Oberholzer J, Raus V, Lacík I. Postmodification with Polycations Enhances Key Properties of Alginate-Based Multicomponent Microcapsules. Biomacromolecules 2024. [PMID: 38857534 DOI: 10.1021/acs.biomac.4c00222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2024]
Abstract
Postmodification of alginate-based microspheres with polyelectrolytes (PEs) is commonly used in the cell encapsulation field to control microsphere stability and permeability. However, little is known about how different applied PEs shape the microsphere morphology and properties, particularly in vivo. Here, we addressed this question using model multicomponent alginate-based microcapsules postmodified with PEs of different charge and structure. We found that the postmodification can enhance or impair the mechanical resistance and biocompatibility of microcapsules implanted into a mouse model, with polycations surprisingly providing the best results. Confocal Raman microscopy and confocal laser scanning microscopy (CLSM) analyses revealed stable interpolyelectrolyte complex layers within the parent microcapsule, hindering the access of higher molar weight PEs into the microcapsule core. All microcapsules showed negative surface zeta potential, indicating that the postmodification PEs get hidden within the microcapsule membrane, which agrees with CLSM data. Human whole blood assay revealed complex behavior of microcapsules regarding their inflammatory and coagulation potential. Importantly, most of the postmodification PEs, including polycations, were found to be benign toward the encapsulated model cells.
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Affiliation(s)
- Faeze Dorchei
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia
| | - Abolfazl Heydari
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia
- National Institute of Rheumatic Diseases, Nábrežie I. Krasku 4, 921 12 Piešt'any, Slovakia
| | - Zuzana Kroneková
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia
- National Institute of Rheumatic Diseases, Nábrežie I. Krasku 4, 921 12 Piešt'any, Slovakia
| | - Juraj Kronek
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia
- National Institute of Rheumatic Diseases, Nábrežie I. Krasku 4, 921 12 Piešt'any, Slovakia
| | - Michal Pelach
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia
| | - Zuzana Cseriová
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia
| | - Dušan Chorvát
- Department of Biophotonics, International Laser Centre, Slovak Centre of Scientific and Technical Information, Ilkovičova 3, 841 04 Bratislava, Slovakia
| | - Fernando Zúñiga-Navarrete
- Department of Proteomics, Institute of Virology, Biomedical Research Center of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 05 Bratislava, Slovakia
| | - Peter D Rios
- CellTrans, Inc., 2201 W. Campbell Park Dr., Chicago, Illinois 60612, United States
| | - James McGarrigle
- CellTrans, Inc., 2201 W. Campbell Park Dr., Chicago, Illinois 60612, United States
| | - Sofia Ghani
- CellTrans, Inc., 2201 W. Campbell Park Dr., Chicago, Illinois 60612, United States
| | - Douglas Isa
- CellTrans, Inc., 2201 W. Campbell Park Dr., Chicago, Illinois 60612, United States
| | - Ira Joshi
- CellTrans, Inc., 2201 W. Campbell Park Dr., Chicago, Illinois 60612, United States
| | - Kalaiyarasi Vasuthas
- Centre of Molecular Inflammation Research (CEMIR), Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Prinsesse Kristinas gt.1, NO-7491 Trondheim, Norway
| | - Anne Mari A Rokstad
- Centre of Molecular Inflammation Research (CEMIR), Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Prinsesse Kristinas gt.1, NO-7491 Trondheim, Norway
| | - José Oberholzer
- CellTrans, Inc., 2201 W. Campbell Park Dr., Chicago, Illinois 60612, United States
- Department of Visceral Surgery and Transplantation, University Hospital Zurich, Raemistrasse 100, 8091 Zurich, Switzerland
| | - Vladimír Raus
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic
| | - Igor Lacík
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia
- National Institute of Rheumatic Diseases, Nábrežie I. Krasku 4, 921 12 Piešt'any, Slovakia
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Yin Q, Gao X, Zhang H, Zhang Z, Yu X, He J, Shi G, Hao L. Fe 3O 4-Cy5.5-trastuzumab magnetic nanoparticles for magnetic resonance/near-infrared imaging targeting HER2 in breast cancer. Biomed Mater 2024; 19:035034. [PMID: 38626777 DOI: 10.1088/1748-605x/ad3f61] [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] [Received: 01/08/2024] [Accepted: 04/16/2024] [Indexed: 04/26/2024]
Abstract
This study developed a probe Fe3O4-Cy5.5-trastuzumab with fluorescence and magnetic resonance imaging functions that can target breast cancer with high HER2 expression, aiming to provide a new theoretical method for the diagnosis of early breast cancer. Fe3O4-Cy5.5-trastuzumab nanoparticles were combined with Fe3O4for T2imaging and Cy5.5 for near-infrared imaging, and coupled with trastuzumab for HER2 targeting. We characterized the nanoparticles used transmission electron microscopy, hydration particle size, Zeta potential, UV and Fourier transform infrared spectroscopy, and examined its magnetism, fluorescence, and relaxation rate related properties. CCK-8 and blood biochemistry analysis evaluated the biosafety and stability of the nanoparticles, and validated the targeting ability of Fe3O4-Cy5.5 trastuzumab nanoparticles throughin vitroandin vivocell and animal experiments. Characterization results showed the successful synthesis of Fe3O4-Cy5.5-trastuzumab nanoparticles with a diameter of 93.72 ± 6.34 nm. The nanoparticles showed a T2relaxation rate 42.29 mM-1s-1, magnetic saturation strength of 27.58 emg g-1. Laser confocal and flow cytometry uptake assay showed that the nanoparticles could effectively target HER2 expressed by breast cancer cells. As indicated byin vitroandin vivostudies, Fe3O4-Cy5.5-trastuzumab were specifically taken up and effectively aggregated to tumour regions with prominent NIRF/MR imaging properties. CCK-8, blood biochemical analysis and histological results suggested Fe3O4-Cy5.5-trastuzumab that exhibited low toxicity to major organs and goodin vivobiocompatibility. The prepared Fe3O4-Cy5.5-trastuzumab exhibited excellent targeting, NIRF/MR imaging performance. It is expected to serve as a safe and effective diagnostic method that lays a theoretical basis for the effective diagnosis of early breast cancer. This study successfully prepared a kind of nanoparticles with near-infrared fluorescence imaging and T2imaging properties, which is expected to serve as a new theory and strategy for early detection of breast cancer.
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Affiliation(s)
- Qiangqiang Yin
- Department of Molecular Imaging, School of Medical Technology, Qiqihar Medical University, Qiqihar, Heilongjiang 161006, People's Republic of China
| | - Xiaolong Gao
- Department of Imaging, Fu Jin Hospital of Traditional Chinese Medicine, Jiamusi, Heilongjiang 156100, People's Republic of China
| | - Hao Zhang
- Department of Molecular Imaging, School of Medical Technology, Qiqihar Medical University, Qiqihar, Heilongjiang 161006, People's Republic of China
| | - Zhichen Zhang
- Department of Molecular Imaging, School of Medical Technology, Qiqihar Medical University, Qiqihar, Heilongjiang 161006, People's Republic of China
| | - Xiaoyang Yu
- Department of Molecular Imaging, School of Medical Technology, Qiqihar Medical University, Qiqihar, Heilongjiang 161006, People's Republic of China
| | - Jialong He
- Department of Molecular Imaging, School of Medical Technology, Qiqihar Medical University, Qiqihar, Heilongjiang 161006, People's Republic of China
| | - Guangyue Shi
- Department of Molecular Imaging, School of Medical Technology, Qiqihar Medical University, Qiqihar, Heilongjiang 161006, People's Republic of China
| | - Liguo Hao
- Department of Molecular Imaging, School of Medical Technology, Qiqihar Medical University, Qiqihar, Heilongjiang 161006, People's Republic of China
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7
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Duque-Sanchez L, Qu Y, Voelcker NH, Thissen H. Tackling catheter-associated urinary tract infections with next-generation antimicrobial technologies. J Biomed Mater Res A 2024; 112:312-335. [PMID: 37881094 DOI: 10.1002/jbm.a.37630] [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: 08/16/2023] [Revised: 09/21/2023] [Accepted: 10/10/2023] [Indexed: 10/27/2023]
Abstract
Urinary catheters and other medical devices associated with the urinary tract such as stents are major contributors to nosocomial urinary tract infections (UTIs) as they provide an access path for pathogens to enter the bladder. Considering that catheter-associated urinary tract infections (CAUTIs) account for approximately 75% of UTIs and that UTIs represent the most common type of healthcare-associated infections, novel anti-infective device technologies are urgently required. The rapid rise of antimicrobial resistance in the context of CAUTIs further highlights the importance of such preventative strategies. In this review, the risk factors for pathogen colonization in the urinary tract are dissected, taking into account the nature and mechanistics of this unique environment. Moreover, the most promising next-generation preventative strategies are critically assessed, focusing in particular on anti-infective surface coatings. Finally, emerging approaches in this field and their likely clinical impact are examined.
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Affiliation(s)
- Lina Duque-Sanchez
- Department of Manufacturing, Commonwealth Scientific and Industrial Research Organization (CSIRO), Clayton, Victoria, Australia
- Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Yue Qu
- Infection and Immunity Program, Department of Microbiology, Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Victoria, Australia
| | - Nicolas H Voelcker
- Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
- Melbourne Centre for Nanofabrication, Victorian Node of the Australian National Fabrication Facility, Materials Science and Engineering, Monash University, Clayton, Victoria, Australia
| | - Helmut Thissen
- Department of Manufacturing, Commonwealth Scientific and Industrial Research Organization (CSIRO), Clayton, Victoria, Australia
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8
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Landoulsi J. Surface (bio)-functionalization of metallic materials: How to cope with real interfaces? Adv Colloid Interface Sci 2024; 325:103054. [PMID: 38359674 DOI: 10.1016/j.cis.2023.103054] [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] [Received: 05/31/2023] [Revised: 11/21/2023] [Accepted: 11/22/2023] [Indexed: 02/17/2024]
Abstract
Metallic materials are an important class of biomaterials used in various medical devices, owing to a suitable combination of their mechanical properties. The (bio)-functionalization of their surfaces is frequently performed for biocompatibility requirements, as it offers a powerful way to control their interaction with biological systems. This is particularly important when physicochemical processes and biological events, mainly involving proteins and cells, are initiated at the host-material interface. This review addresses the state of "real interfaces" in the context of (bio)-functionalization of metallic materials, and the necessity to cope with it to avoid frequent improper evaluation of the procedure used. This issue is, indeed, well-recognized but often neglected and emerges from three main issues: (i) ubiquity of surface contamination with organic compounds, (ii) reactivity of metallic surfaces in biological medium, and (iii) discrepancy in (bio)-functionalization procedures between expectations and reality. These disturb the assessment of the strategies adopted for surface modifications and limit the possibilities to provide guidelines for their improvements. For this purpose, X-ray photoelectrons spectroscopy (XPS) comes to the rescue. Based on significant progresses made in methodological developments, and through a large amount of data compiled to generate statistically meaningful information, and to insure selectivity, precision and accuracy, the state of "real interfaces" is explored in depth, while looking after the two main constituents: (i) the bio-organic adlayer, in which the discrimination between the compounds of interest (anchoring molecules, coupling agents, proteins, etc) and organic contaminants can be made, and (ii) the metallic surface, which undergoes dynamic processes due to their reactivity. Moreover, through one of the widespread (bio)-functionalization strategy, given as a case study, a particular attention is devoted to describe the state of the interface at different stages (composition, depth distribution of contaminants and (bio)compounds of interest) and the mode of protein retention. It is highlighted, in particular, that the occurrence or improvement of bioactivity does not demonstrate that the chemical schemes worked in reality. These aspects are particularly essential to make progress on the way to choose the suitable (bio)-functionalization strategy and to provide guidelines to improve its efficiency.
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Affiliation(s)
- Jessem Landoulsi
- Sorbonne Université, CNRS, Laboratoire de Réactivité de Surface, 4 place Jussieu, F-75005 Paris, France; Laboratoire de Biomécanique & Bioingénierie, CNRS, Université de Technologie de Compiègne, 20529 F-60205 Compiègne Cedex, France.
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9
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He G, Dong T, Yang Z, Stokke BT, Jiang Z. Surface Oxygen Deficiency Enabled Spontaneous Antiprotein Fouling in WO 3 Nanosheets for Biosensing in Biological Fluids. Anal Chem 2024; 96:839-846. [PMID: 38174654 PMCID: PMC10794997 DOI: 10.1021/acs.analchem.3c04414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 12/12/2023] [Accepted: 12/18/2023] [Indexed: 01/05/2024]
Abstract
Biofouling deteriorates the performance of sensors operated in biofluids. Protein adsorption is believed to be the first step of biofouling, which also reduces biocompatibility by further inducing cell adhesion, platelet activation, and even inflammation. Current studies of antifouling coatings are focused on polymers and hydrogels, which have succeeded in remaining resistant to protein adsorption, but their application on sensor electrodes is limited due to low conductivity and biocompatibility. Here, we report a spontaneous antibiofouling strategy for sensor electrodes by controlling oxygen vacancies in WO3 nanosheets. Irreversible adsorption of proteins was reduced by 76% in unprocessed human plasma when electrodes were coated with WO3 rich in surface oxygen vacancy. These electrodes maintained 91% of the initial current density after 1 month of incubation in human plasma.
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Affiliation(s)
- Guozhen He
- Chongqing
Key Laboratory of Micro-Nano Systems and Smart Transduction, Chongqing
Key Laboratory of Colleges and Universities on Micro-Nano Systems
Technology and Smart Transducing, Collaborative Innovation Center
on Micro-Nano Transduction and Intelligent Eco-Internet of Things,
Chongqing Academician and Expert Workstation, Chongqing Technology and Business University, Nan’an District, Chongqing 400067, China
- Department
of Microsystems (IMS), Faculty of Technology, Natural Sciences and
Maritime Sciences, University of South-Eastern
Norway, Postboks 235, Kongsberg 3603, Norway
- Sensovann
AS, Raveien 215, Borre 3184, Norway
| | - Tao Dong
- Chongqing
Key Laboratory of Micro-Nano Systems and Smart Transduction, Chongqing
Key Laboratory of Colleges and Universities on Micro-Nano Systems
Technology and Smart Transducing, Collaborative Innovation Center
on Micro-Nano Transduction and Intelligent Eco-Internet of Things,
Chongqing Academician and Expert Workstation, Chongqing Technology and Business University, Nan’an District, Chongqing 400067, China
- Department
of Microsystems (IMS), Faculty of Technology, Natural Sciences and
Maritime Sciences, University of South-Eastern
Norway, Postboks 235, Kongsberg 3603, Norway
| | - Zhaochu Yang
- Chongqing
Key Laboratory of Micro-Nano Systems and Smart Transduction, Chongqing
Key Laboratory of Colleges and Universities on Micro-Nano Systems
Technology and Smart Transducing, Collaborative Innovation Center
on Micro-Nano Transduction and Intelligent Eco-Internet of Things,
Chongqing Academician and Expert Workstation, Chongqing Technology and Business University, Nan’an District, Chongqing 400067, China
- Sensovann
AS, Raveien 215, Borre 3184, Norway
| | - Bjo̷rn Torger Stokke
- Department
of Microsystems (IMS), Faculty of Technology, Natural Sciences and
Maritime Sciences, University of South-Eastern
Norway, Postboks 235, Kongsberg 3603, Norway
- Biophysics
and Medical Technology, Department of Physics, Norwegian University of Science and Technology, Trondheim NO-7491, Norway
| | - Zhuangde Jiang
- Chongqing
Key Laboratory of Micro-Nano Systems and Smart Transduction, Chongqing
Key Laboratory of Colleges and Universities on Micro-Nano Systems
Technology and Smart Transducing, Collaborative Innovation Center
on Micro-Nano Transduction and Intelligent Eco-Internet of Things,
Chongqing Academician and Expert Workstation, Chongqing Technology and Business University, Nan’an District, Chongqing 400067, China
- Xi’an
Jiaotong University, Xi’an 710049, China
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10
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Kanduč M, Schneck E, Netz RR. Understanding the "Berg limit": the 65° contact angle as the universal adhesion threshold of biomatter. Phys Chem Chem Phys 2024; 26:713-723. [PMID: 38100091 DOI: 10.1039/d3cp05084j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
Surface phenomena in aqueous environments such as long-range hydrophobic attraction, macromolecular adhesion, and even biofouling are predominantly influenced by a fundamental parameter-the water contact angle. The minimal contact angle required for these and related phenomena to occur has been repeatedly reported to be around 65° and is commonly referred to as the "Berg limit." However, the universality of this specific threshold across diverse contexts has remained puzzling. In this perspective article, we aim to rationalize the reoccurrence of this enigmatic contact angle. We show that the relevant scenarios can be effectively conceptualized as three-phase problems involving the surface of interest, water, and a generic oil-like material that is representative of the nonpolar constituents within interacting entities. Our analysis reveals that attraction and adhesion emerge when substrates display an underwater oleophilic character, corresponding to a "hydrophobicity under oil", which occurs for contact angles above approximately 65°. This streamlined view provides valuable insights into macromolecular interactions and holds implications for technological applications.
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Affiliation(s)
- Matej Kanduč
- Department of Theoretical Physics, Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia.
| | - Emanuel Schneck
- Department of Physics, Technische Universität Darmstadt, Hochschulstrasse 8, Darmstadt 64289, Germany
| | - Roland R Netz
- Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, Berlin 14195, Germany
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11
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Tadjine M, Bouzidi F, Berbri A, Nehmar H, Bouhekka A. In situ Fourier transform infrared-attenuated total reflection spectroscopy and modeling investigation of protein adsorption: Case of expanded bovine serum albumin on titanium dioxide anatase. Biointerphases 2024; 19:011001. [PMID: 38214353 DOI: 10.1116/6.0003020] [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: 07/31/2023] [Accepted: 12/14/2023] [Indexed: 01/13/2024] Open
Abstract
The purpose of this experimental and modeling research is to study the pH effect and to determine the surface coverage plus the adsorption constant (Ka) of bovine serum albumin (BSA) protein adsorbed on TiO2 anatase surface, respectively. In situ Fourier transform infrared-attenuated total reflection spectroscopy in a flow-through cell was used to study the BSA adsorption on porous TiO2 anatase films. The experiments were performed in water solution, under different pH values, at a concentration of 10-6 mol/l. Theoretically, we extended the two-state model, based on a system of coupled differential equations, by adding a desorption parameter Kd2, for unfolded state. The model was solved taking into account the adsorption (Ka), desorption (Kd1,2), transformation (Kf) coefficients, and the initial solution protein concentration (C0). The findings clearly illustrated that the solution pH drastically changed the behavior of BSA adsorption, whereas the mathematical analytical solutions allowed us to determine the native state (θ1), the unfolded state (θ2), and the full one (θ) surface coverages. Finally, a good application of the approximated model on the experimental work, expanded BSA adsorbed on TiO2 anatase at pH = 1.7, indicated a value of Ka = (408.36 ± 0.996) × 102 mol-1 l min-1.
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Affiliation(s)
- Moustafa Tadjine
- Department of Physics, Faculty of Exact Sciences and Informatics, Hassiba Benbouali University of Chlef, P.B. 78 C, National Road No. 19, Ouled Fares, 02180 Chlef, Algeria
- Theoretical Physics and Material Physics Laboratory, Hassiba Benbouali University of Chlef, P.B. 151, Hay Salem, National Road No. 19, 02000 Chlef, Algeria
| | - Fatima Bouzidi
- Department of Physics, Faculty of Exact Sciences and Informatics, Hassiba Benbouali University of Chlef, P.B. 78 C, National Road No. 19, Ouled Fares, 02180 Chlef, Algeria
- Laboratory of Mechanics and Energy, Hassiba Benbouali University of Chlef, P.B. 151, Hay Salem, National Road No. 19, 02000 Chlef, Algeria
| | - Abderrezak Berbri
- Department of Physics, Faculty of Exact Sciences and Informatics, Hassiba Benbouali University of Chlef, P.B. 78 C, National Road No. 19, Ouled Fares, 02180 Chlef, Algeria
| | - Hamid Nehmar
- Laboratoire de Physique des Couches Minces et Matériaux pour l'Electronique -LPCMME Université Oran 1 Ahmed Ben Bella, B.P. 1524, El M'naouar 31100 Oran, Algeria
| | - Ahmed Bouhekka
- Laboratoire de Physique des Couches Minces et Matériaux pour l'Electronique -LPCMME Université Oran 1 Ahmed Ben Bella, B.P. 1524, El M'naouar 31100 Oran, Algeria
- Department of Matter Sciences, Faculty of Sciences and Technology, Tissemsilt University, P.B. 182, 38000 Tissemsilt, Algeria
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12
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Luu CH, Nguyen NT, Ta HT. Unravelling Surface Modification Strategies for Preventing Medical Device-Induced Thrombosis. Adv Healthc Mater 2024; 13:e2301039. [PMID: 37725037 DOI: 10.1002/adhm.202301039] [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: 06/14/2023] [Revised: 08/29/2023] [Indexed: 09/21/2023]
Abstract
The use of biomaterials in implanted medical devices remains hampered by platelet adhesion and blood coagulation. Thrombus formation is a prevalent cause of failure of these blood-contacting devices. Although systemic anticoagulant can be used to support materials and devices with poor blood compatibility, its negative effects such as an increased chance of bleeding, make materials with superior hemocompatibility extremely attractive, especially for long-term applications. This review examines blood-surface interactions, the pathogenesis of clotting on blood-contacting medical devices, popular surface modification techniques, mechanisms of action of anticoagulant coatings, and discusses future directions in biomaterial research for preventing thrombosis. In addition, this paper comprehensively reviews several novel methods that either entirely prevent interaction between material surfaces and blood components or regulate the reaction of the coagulation cascade, thrombocytes, and leukocytes.
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Affiliation(s)
- Cuong Hung Luu
- School of Environment and Science, Griffith University, Nathan, Queensland, 4111, Australia
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, Queensland, 4111, Australia
| | - Nam-Trung Nguyen
- School of Environment and Science, Griffith University, Nathan, Queensland, 4111, Australia
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, Queensland, 4111, Australia
| | - Hang Thu Ta
- School of Environment and Science, Griffith University, Nathan, Queensland, 4111, Australia
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, Queensland, 4111, Australia
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13
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Zhang W, Cui L, Xie C, Du Z, Mou X, Ke Y, Ma Q, Tian W, Yang Z. Glycocalyx-inspired dynamic antifouling surfaces for temporary intravascular devices. Biomaterials 2024; 304:122427. [PMID: 38100906 DOI: 10.1016/j.biomaterials.2023.122427] [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] [Received: 08/31/2023] [Revised: 11/27/2023] [Accepted: 12/08/2023] [Indexed: 12/17/2023]
Abstract
Protein and cell adhesion on temporary intravascular devices can lead to thrombosis and tissue embedment, significantly increasing complications and device retrieval difficulties. Here, we propose an endothelial glycocalyx-inspired dynamic antifouling surface strategy for indwelling catheters and retrievable vascular filters to prevent thrombosis and suppress intimal embedment. This strategy is realized on the surfaces of substrates by the intensely dense grafting of hydrolyzable endothelial polysaccharide hyaluronic acid (HA), assisted by an amine-rich phenol-polyamine universal platform. The resultant super-hydrophilic surface exhibits potent antifouling property against proteins and cells. Additionally, the HA hydrolysis induces continuous degradation of the coating, enabling removal of inevitable biofouling on the surface. Moreover, the dense grafting of HA also ensures the medium-term effectiveness of this dynamic antifouling surface. The coated catheters maintain a superior anti-thrombosis capacity in ex vivo blood circulation after 30 days immersion. In the abdominal veins of rats, the coated implants show inhibitory effects on intimal embedment up to 2 months. Overall, we envision that this glycocalyx-inspired dynamic antifouling surface strategy could be a promising surface engineering technology for temporary intravascular devices.
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Affiliation(s)
- Wentai Zhang
- Dongguan Key Laboratory of Smart Biomaterials and Regenerative Medicine, Department of Cardiology, The Tenth Affiliated Hospital, Southern Medical University, Dongguan, Guangdong, 523000, China
| | - Linxian Cui
- Cardiology Department, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, 610072, China
| | - Chaoming Xie
- Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu, Sichuan, 610072, China
| | - Zeyu Du
- Dongguan Key Laboratory of Smart Biomaterials and Regenerative Medicine, Department of Cardiology, The Tenth Affiliated Hospital, Southern Medical University, Dongguan, Guangdong, 523000, China
| | - Xiaohui Mou
- Dongguan Key Laboratory of Smart Biomaterials and Regenerative Medicine, Department of Cardiology, The Tenth Affiliated Hospital, Southern Medical University, Dongguan, Guangdong, 523000, China
| | - You Ke
- Dongguan Key Laboratory of Smart Biomaterials and Regenerative Medicine, Department of Cardiology, The Tenth Affiliated Hospital, Southern Medical University, Dongguan, Guangdong, 523000, China
| | - Qing Ma
- Dongguan Key Laboratory of Smart Biomaterials and Regenerative Medicine, Department of Cardiology, The Tenth Affiliated Hospital, Southern Medical University, Dongguan, Guangdong, 523000, China
| | - Wenjie Tian
- Cardiology Department, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, 610072, China.
| | - Zhilu Yang
- Dongguan Key Laboratory of Smart Biomaterials and Regenerative Medicine, Department of Cardiology, The Tenth Affiliated Hospital, Southern Medical University, Dongguan, Guangdong, 523000, China; Department of Cardiology, Third People's Hospital of Chengdu Affiliated to Southwest Jiaotong University, Chengdu, Sichuan, 610072, China.
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14
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Fischbach A, Lamberti M, Simons JA, Wrede E, Theißen A, Winnersbach P, Rossaint R, Stollenwerk A, Bleilevens C. Early Blood Clot Detection Using Forward Scattering Light Measurements Is Not Superior to Delta Pressure Measurements. BIOSENSORS 2023; 13:1012. [PMID: 38131772 PMCID: PMC10741584 DOI: 10.3390/bios13121012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 11/30/2023] [Accepted: 12/02/2023] [Indexed: 12/23/2023]
Abstract
The occurrence of thrombus formation within an extracorporeal membrane oxygenator is a common complication during extracorporeal membrane oxygenation therapy and can rapidly result in a life-threatening situation due to arterial thromboembolism, causing stroke, pulmonary embolism, and limb ischemia in the patient. The standard clinical practice is to monitor the pressure at the inlet and outlet of oxygenators, indicating fulminant, obstructive clot formation indicated by an increasing pressure difference (ΔP). However, smaller blood clots at early stages are not detectable. Therefore, there is an unmet need for sensors that can detect blood clots at an early stage to minimize the associated thromboembolic risks for patients. This study aimed to evaluate if forward scattered light (FSL) measurements can be used for early blood clot detection and if it is superior to the current clinical gold standard (pressure measurements). A miniaturized in vitro test circuit, including a custom-made test chamber, was used. Heparinized human whole blood was circulated through the test circuit until clot formation occurred. Four LEDs and four photodiodes were placed along the sidewall of the test chamber in different positions for FSL measurements. The pressure monitor was connected to the inlet and the outlet to detect changes in ΔP across the test chamber. Despite several modifications in the LED positions on the test chamber, the FSL measurements could not reliably detect a blood clot within the in vitro test circuit, although the pressure measurements used as the current clinical gold standard detected fulminant clot formation in 11 independent experiments.
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Affiliation(s)
- Anna Fischbach
- Department of Anesthesiology, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074 Aachen, Germany; (J.A.S.); (A.T.); (P.W.); (R.R.)
| | - Michael Lamberti
- Informatics 11—Embedded Software, RWTH Aachen University, 52074 Aachen, Germany; (M.L.); (E.W.); (A.S.)
| | - Julia Alexandra Simons
- Department of Anesthesiology, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074 Aachen, Germany; (J.A.S.); (A.T.); (P.W.); (R.R.)
| | - Erik Wrede
- Informatics 11—Embedded Software, RWTH Aachen University, 52074 Aachen, Germany; (M.L.); (E.W.); (A.S.)
| | - Alexander Theißen
- Department of Anesthesiology, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074 Aachen, Germany; (J.A.S.); (A.T.); (P.W.); (R.R.)
| | - Patrick Winnersbach
- Department of Anesthesiology, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074 Aachen, Germany; (J.A.S.); (A.T.); (P.W.); (R.R.)
| | - Rolf Rossaint
- Department of Anesthesiology, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074 Aachen, Germany; (J.A.S.); (A.T.); (P.W.); (R.R.)
| | - André Stollenwerk
- Informatics 11—Embedded Software, RWTH Aachen University, 52074 Aachen, Germany; (M.L.); (E.W.); (A.S.)
| | - Christian Bleilevens
- Department of Anesthesiology, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074 Aachen, Germany; (J.A.S.); (A.T.); (P.W.); (R.R.)
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15
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Su C, Cao Z, Liu J, Sun X, Qiu K, Mu Y, Cong X, Wang X, Chen X, Jia N, Feng C. The hierarchical porous structures of diatom biosilica-based hemostat: From selective adsorption to rapid hemostasis. J Colloid Interface Sci 2023; 651:544-557. [PMID: 37562297 DOI: 10.1016/j.jcis.2023.07.202] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 07/20/2023] [Accepted: 07/30/2023] [Indexed: 08/12/2023]
Abstract
Here, we developed a Ca2+ modified diatom biosilica-based hemostat (DBp-Ca2+) with a full scale hierarchical porous structure (pore sizes range from micrometers to nanometers). The unique porous size in stepped arrangement of DBp-Ca2+give it selective adsorption capacity during coagulation process, resulted in rapid hemorrhage control. Based on in vitro and in vivo studies, it was confirmed that the primary micropores of DBp-Ca2+gave it high porosity to hold water (water absorption: 78.46 ± 1.12 %) and protein (protein absorption: 83.7 ± 1.33 mg/g). Its secondary mesopores to macropores could reduce of water diffusion length to accelerate blood exchange (complete within 300 ms). The tertiary stacking pores of DBp-Ca2+ could absorb platelets and erythrocytes to reduce more than 50 % of thrombosis time, and provided enough contact between Ca active site and coagulation factors for triggering clotting cascade reaction. This work not only developed a novel DBs based hemostat with efficient hemorrhage control, but also provided new insights to study procoagulant mechanism of inorganic hemostat with hierarchical porous structure from selective adsorption to rapid hemostasis.
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Affiliation(s)
- Chang Su
- College of Marine Life Science, Ocean University of China, 5# Yushan Road, Qingdao 266003, Shandong Province, China
| | - Zheng Cao
- College of Marine Life Science, Ocean University of China, 5# Yushan Road, Qingdao 266003, Shandong Province, China
| | - Jiahao Liu
- Minimally invasive interventional therapy center, Qingdao Hospital, University of Health and Rehabilitation Sciences (Qingdao Municipal Hospital), 5# Donghai Middle Road, Qingdao 266000, Shandong Province, China
| | - Xiaojie Sun
- College of Marine Life Science, Ocean University of China, 5# Yushan Road, Qingdao 266003, Shandong Province, China
| | - Kaijin Qiu
- College of Marine Life Science, Ocean University of China, 5# Yushan Road, Qingdao 266003, Shandong Province, China
| | - Yuzhi Mu
- College of Marine Life Science, Ocean University of China, 5# Yushan Road, Qingdao 266003, Shandong Province, China
| | - Xin Cong
- College of Marine Life Science, Ocean University of China, 5# Yushan Road, Qingdao 266003, Shandong Province, China
| | - Xiaoye Wang
- College of Marine Life Science, Ocean University of China, 5# Yushan Road, Qingdao 266003, Shandong Province, China
| | - Xiguang Chen
- College of Marine Life Science, Ocean University of China, 5# Yushan Road, Qingdao 266003, Shandong Province, China; Sanya Oceanographic Institute, Ocean University of China, Yonyou Industrial Park, Yazhou Bay Science & Technology City, Sanya, 572024, Hainan Province, China; Laoshan Laboratory, 1# Wenhai Road, Qingdao 266000, Shandong Province, China
| | - Nan Jia
- Minimally invasive interventional therapy center, Qingdao Hospital, University of Health and Rehabilitation Sciences (Qingdao Municipal Hospital), 5# Donghai Middle Road, Qingdao 266000, Shandong Province, China.
| | - Chao Feng
- College of Marine Life Science, Ocean University of China, 5# Yushan Road, Qingdao 266003, Shandong Province, China; Sanya Oceanographic Institute, Ocean University of China, Yonyou Industrial Park, Yazhou Bay Science & Technology City, Sanya, 572024, Hainan Province, China.
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16
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Yang T, Buholzer KJ, Sottini A, Cao X, deMello A, Nettels D, Schuler B. Rapid droplet-based mixing for single-molecule spectroscopy. Nat Methods 2023; 20:1479-1482. [PMID: 37749213 DOI: 10.1038/s41592-023-01995-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 08/02/2023] [Indexed: 09/27/2023]
Abstract
Probing non-equilibrium dynamics with single-molecule spectroscopy is important for dissecting biomolecular mechanisms. However, existing microfluidic rapid-mixing systems for this purpose are incompatible with surface-adhesive biomolecules, exhibit undesirable flow dispersion and are often demanding to fabricate. Here we introduce droplet-based microfluidic mixing for single-molecule spectroscopy to overcome these limitations in a wide range of applications. We demonstrate its robust functionality with binding kinetics of even very surface-adhesive proteins on the millisecond timescale.
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Affiliation(s)
- Tianjin Yang
- Department of Biochemistry, University of Zurich, Zurich, Switzerland.
| | - Karin J Buholzer
- Department of Biochemistry, University of Zurich, Zurich, Switzerland
| | - Andrea Sottini
- Department of Biochemistry, University of Zurich, Zurich, Switzerland
| | - Xiaobao Cao
- Institute for Chemical and Bioengineering, ETH Zurich, Zurich, Switzerland
| | - Andrew deMello
- Institute for Chemical and Bioengineering, ETH Zurich, Zurich, Switzerland
| | - Daniel Nettels
- Department of Biochemistry, University of Zurich, Zurich, Switzerland
| | - Benjamin Schuler
- Department of Biochemistry, University of Zurich, Zurich, Switzerland.
- Department of Physics, University of Zurich, Zurich, Switzerland.
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17
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Lyu K, Zhao Y, Zhang M, Tang J, Zhang J, Liu Y, Bian X, Chen X, Chen H, Wang D. Tracking of Protein Adsorption on Poly(l-lactic acid) Film Surfaces: The Role of Molar Mass. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:13534-13545. [PMID: 37712535 DOI: 10.1021/acs.langmuir.3c01571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/16/2023]
Abstract
Poly(l-lactic acid) (PLLA) has been extensively utilized as a biomaterial for various biomedical applications. The first and one of the most critical steps upon contact with biological fluids is the adsorption of proteins on the material's surface. Understanding the behavior of protein adsorption is vital for guiding the synthesis and preparation of PLLA for biomedical purposes. In this study, total internal reflection fluorescence microscopy was employed to investigate the adsorption of human serum albumin (HSA) on PLLA films with different molar masses. We found that molar mass affects HSA adsorption in such a way that it affects only the adsorption rate constants, but not the desorption rate constants. Additionally, we observed that HSA adsorption is spatially heterogeneous and exhibits many strong binding sites regardless of the molar mass of the PLLA films. We found that the free volume of PLLA plays a crucial role in determining its water uptake capacity and surface hydration, consequently impacting the adsorption of HSA.
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Affiliation(s)
- Kaixuan Lyu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Yuehua Zhao
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Miaomiao Zhang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Jilin Tang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Jidong Zhang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Yanlong Liu
- Key Laboratory of Polymer Ecomaterials, Chinese Academy of Sciences, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Xinchao Bian
- Key Laboratory of Polymer Ecomaterials, Chinese Academy of Sciences, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials, Chinese Academy of Sciences, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Hongbo Chen
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Dapeng Wang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
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18
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Durdu S, Cihan G, Yalcin E, Cavusoglu K, Altinkok A, Sagcan H, Yurtsever İ, Usta M. Surface characterization, electrochemical properties and in vitro biological properties of Zn-deposited TiO 2 nanotube surfaces. Sci Rep 2023; 13:11423. [PMID: 37452093 PMCID: PMC10349054 DOI: 10.1038/s41598-023-38733-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 07/13/2023] [Indexed: 07/18/2023] Open
Abstract
In this work, to improve antibacterial, biocompatible and bioactive properties of commercial pure titanium (cp-Ti) for implant applications, the Zn-deposited nanotube surfaces were fabricated on cp-Ti by using combined anodic oxidation (AO) and physical vapor deposition (PVD-TE) methods. Homogenous elemental distributions were observed through all surfaces. Moreover, Zn-deposited surfaces exhibited hydrophobic character while bare Ti surfaces were hydrophilic. Due to the biodegradable behavior of Zn on the nanotube surface, Zn-deposited nanotube surfaces showed higher corrosion current density than bare cp-Ti surface in SBF conditions as expected. In vitro biological properties such as cell viability, ALP activity, protein adsorption, hemolytic activity and antibacterial activity for Gram-positive and Gram-negative bacteria of all surfaces were investigated in detail. Cell viability, ALP activity and antibacterial properties of Zn-deposited nanotube surfaces were significantly improved with respect to bare cp-Ti. Moreover, hemolytic activity and protein adsorption of Zn-deposited nanotube surfaces were decreased. According to these results; a bioactive, biocompatible and antibacterial Zn-deposited nanotube surfaces produced on cp-Ti by using combined AO and PVD techniques can have potential for orthopedic and dental implant applications.
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Affiliation(s)
- Salih Durdu
- Industrial Engineering, Faculty of Engineering, Giresun University, Merkez, 28200, Giresun, Turkey.
- Mechanical Engineering, Giresun University, 28200, Giresun, Turkey.
| | - Gizem Cihan
- Department of Biology, Giresun University, 28200, Giresun, Turkey
| | - Emine Yalcin
- Department of Biology, Giresun University, 28200, Giresun, Turkey
| | | | - Atilgan Altinkok
- Turkish Naval Academy, National Defence University, 34940, Istanbul, Turkey
| | - Hasan Sagcan
- Department of Medical Laboratory Techniques, Istanbul Medipol University, Istanbul, Turkey
| | - İlknur Yurtsever
- Department of Medical Laboratory Techniques, Istanbul Medipol University, Istanbul, Turkey
- Pharmacology and Toxicology Department, Boonshoft School of Medicine Ohio, Wright State University, Dayton, USA
| | - Metin Usta
- Materials Science and Engineering, Gebze Technical University, 41400, Gebze, Turkey
- Aluminum Research Center (GTU-AAUM), Gebze Technical University, 41400, Gebze, Turkey
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19
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Schwan J, Markert S, Rosenfeldt S, Schüler D, Mickoleit F, Schenk AS. Comparing the Colloidal Stabilities of Commercial and Biogenic Iron Oxide Nanoparticles That Have Potential In Vitro/In Vivo Applications. Molecules 2023; 28:4895. [PMID: 37446557 DOI: 10.3390/molecules28134895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 06/13/2023] [Accepted: 06/15/2023] [Indexed: 07/15/2023] Open
Abstract
For the potential in vitro/in vivo applications of magnetic iron oxide nanoparticles, their stability in different physiological fluids has to be ensured. This important prerequisite includes the preservation of the particles' stability during the envisaged application and, consequently, their invariance with respect to the transfer from storage conditions to cell culture media or even bodily fluids. Here, we investigate the colloidal stabilities of commercial nanoparticles with different coatings as a model system for biogenic iron oxide nanoparticles (magnetosomes) isolated from magnetotactic bacteria. We demonstrate that the stability can be evaluated and quantified by determining the intensity-weighted average of the particle sizes (Z-value) obtained from dynamic light scattering experiments as a simple quality criterion, which can also be used as an indicator for protein corona formation.
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Affiliation(s)
- Jonas Schwan
- Physical Chemistry IV, University of Bayreuth, D-95447 Bayreuth, Germany
| | - Simon Markert
- Department Microbiology, University of Bayreuth, D-95447 Bayreuth, Germany
| | - Sabine Rosenfeldt
- Physical Chemistry I, University of Bayreuth, D-95447 Bayreuth, Germany
- Bavarian Polymer Institute (BPI), University of Bayreuth, D-95447 Bayreuth, Germany
| | - Dirk Schüler
- Department Microbiology, University of Bayreuth, D-95447 Bayreuth, Germany
| | - Frank Mickoleit
- Department Microbiology, University of Bayreuth, D-95447 Bayreuth, Germany
| | - Anna S Schenk
- Physical Chemistry IV, University of Bayreuth, D-95447 Bayreuth, Germany
- Bavarian Polymer Institute (BPI), University of Bayreuth, D-95447 Bayreuth, Germany
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20
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Ma W, Liu X, Yang M, Hong Q, Meng L, Zhang Q, Chen J, Pan C. Fabrication of CO-releasing surface to enhance the blood compatibility and endothelialization of TiO 2 nanotubes on titanium surface. BIOMATERIALS ADVANCES 2023; 149:213393. [PMID: 36966654 DOI: 10.1016/j.bioadv.2023.213393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 03/10/2023] [Accepted: 03/15/2023] [Indexed: 05/02/2023]
Abstract
Although the construction of nanotube arrays with the micro-nano structures on the titanium surfaces has demonstrated a great promise in the field of blood-contacting materials and devices, the limited surface hemocompatibility and delayed endothelial healing should be further improved. Carbon monoxide (CO) gas signaling molecule within the physiological concentrations has excellent anticoagulation and the ability to promote endothelial growth, exhibiting the great potential for the blood-contact biomaterials, especially the cardiovascular devices. In this study, the regular titanium dioxide nanotube arrays were firstly prepared in situ on the titanium surface by anodic oxidation, followed by the immobilization of the complex of sodium alginate/carboxymethyl chitosan (SA/CS) on the self-assembled modified nanotube surface, the CO-releasing molecule (CORM-401) was finally grafted onto the surface to create a CO-releasing bioactive surface to enhance the biocompatibility. The results of scanning electron microscopy (SEM), X-ray energy dispersion spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS) revealed that the CO-releasing molecules were successfully immobilized on the surface. The modified nanotube arrays not only exhibited excellent hydrophilicity but also could slowly release CO gas molecules, and the amount of CO release increased when cysteine was added. Furthermore, the nanotube array can promote albumin adsorption while inhibit fibrinogen adsorption to some extent, demonstrating its selective albumin adsorption; although this effect was somewhat reduced by the introduction of CORM-401, it can be significantly enhanced by the catalytic release of CO. The results of hemocompatibility and endothelial cell growth behaviors showed that, as compared with the CORM-401 modified sample, although the SA/CS-modified sample had better biocompatibility, in the case of cysteine-catalyzed CO release, the released CO could not only reduce the platelet adhesion and activation as well as hemolysis rate, but also promote endothelial cell adhesion and proliferation as well as vascular endothelial growth factor (VEGF) and nitric oxide (NO) expression. As a result, the research of the present study demonstrated that the releasing CO from TiO2 nanotubes can simultaneously enhance the surface hemocompatibility and endothelialization, which could open a new route to enhance the biocompatibility of the blood-contacting materials and devices, such as the artificial heart valve and cardiovascular stents.
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Affiliation(s)
- Wenfu Ma
- Faculty of Mechanical and Material Engineering, Jiangsu Provincial Engineering Research Center for Biomaterials and Advanced Medical Devices, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Xuhui Liu
- The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an 223003, China
| | - Minhui Yang
- Faculty of Mechanical and Material Engineering, Jiangsu Provincial Engineering Research Center for Biomaterials and Advanced Medical Devices, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Qingxiang Hong
- Faculty of Mechanical and Material Engineering, Jiangsu Provincial Engineering Research Center for Biomaterials and Advanced Medical Devices, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Lingjie Meng
- Faculty of Mechanical and Material Engineering, Jiangsu Provincial Engineering Research Center for Biomaterials and Advanced Medical Devices, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Qiuyang Zhang
- Faculty of Mechanical and Material Engineering, Jiangsu Provincial Engineering Research Center for Biomaterials and Advanced Medical Devices, Huaiyin Institute of Technology, Huai'an 223003, China.
| | - Jie Chen
- Faculty of Mechanical and Material Engineering, Jiangsu Provincial Engineering Research Center for Biomaterials and Advanced Medical Devices, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Changjiang Pan
- Faculty of Mechanical and Material Engineering, Jiangsu Provincial Engineering Research Center for Biomaterials and Advanced Medical Devices, Huaiyin Institute of Technology, Huai'an 223003, China.
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21
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Parisi L, Ghezzi B, Toffoli A, Macaluso GM, Lumetti S. Aptamer-enriched scaffolds for tissue regeneration: a systematic review of the literature. Front Bioeng Biotechnol 2023; 11:1199651. [PMID: 37265990 PMCID: PMC10229892 DOI: 10.3389/fbioe.2023.1199651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 05/04/2023] [Indexed: 06/03/2023] Open
Abstract
Introduction: Aptamers are a brand-new class of receptors that can be exploited to improve the bioactivity of tissue engineering grafts. The aim of this work was to revise the current literature on in vitro and in vivo studies in order to i) identify current strategies adopted to improve scaffold bioactivity by aptamers; ii) assess effects of aptamer functionalization on cell behavior and iii) on tissue regeneration. Methods: Using a systematic search approach original research articles published up to 30 April 2022, were considered and screened. Results: In total, 131 records were identified and 18 were included in the final analysis. Included studies showed that aptamers can improve the bioactivity of biomaterials by specific adsorption of adhesive molecules or growth factors from the surrounding environment, or by capturing specific cell types. All the studies showed that aptamers ameliorate scaffold colonization by cells without modifying the physicochemical characteristics of the bare scaffold. Additionally, aptamers seem to promote the early stages of tissue healing and to promote anatomical and functional regeneration. Discussion: Although a metanalysis could not be performed due to the limited number of studies, we believe these findings provide solid evidence supporting the use of aptamers as a suitable modification to improve the bioactivity of tissue engineering constructs.
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Affiliation(s)
- Ludovica Parisi
- Laboratory for Oral Molecular Biology, Department of Orthodontics and Dentofacial Orthopedics, University of Bern, Bern, Switzerland
| | - Benedetta Ghezzi
- Centro Universitario di Odontoiatria, Dipartimento di Medicina e Chirurgia, University of Parma, Parma, Italy
- Istituto dei Materiali per l’Elettronica ed il Magnetismo, Consiglio Nazionale delle Ricerche, Parma, Italy
| | - Andrea Toffoli
- Centro Universitario di Odontoiatria, Dipartimento di Medicina e Chirurgia, University of Parma, Parma, Italy
| | - Guido M. Macaluso
- Centro Universitario di Odontoiatria, Dipartimento di Medicina e Chirurgia, University of Parma, Parma, Italy
- Istituto dei Materiali per l’Elettronica ed il Magnetismo, Consiglio Nazionale delle Ricerche, Parma, Italy
| | - Simone Lumetti
- Centro Universitario di Odontoiatria, Dipartimento di Medicina e Chirurgia, University of Parma, Parma, Italy
- Istituto dei Materiali per l’Elettronica ed il Magnetismo, Consiglio Nazionale delle Ricerche, Parma, Italy
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22
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Xue Y, Kossar AP, Abramov A, Frasca A, Sun M, Zyablitskaya M, Paik D, Kalfa D, Della Barbera M, Thiene G, Kozaki S, Kawashima T, Gorman JH, Gorman RC, Gillespie MJ, Carreon CK, Sanders SP, Levy RJ, Ferrari G. Age-related enhanced degeneration of bioprosthetic valves due to leaflet calcification, tissue crosslinking, and structural changes. Cardiovasc Res 2023; 119:302-315. [PMID: 35020813 PMCID: PMC10022861 DOI: 10.1093/cvr/cvac002] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 11/03/2021] [Accepted: 01/06/2022] [Indexed: 11/14/2022] Open
Abstract
AIMS Bioprosthetic heart valves (BHVs), made from glutaraldehyde-fixed heterograft materials, are subject to more rapid structural valve degeneration (SVD) in paediatric and young adult patients. Differences in blood biochemistries and propensity for disease accelerate SVD in these patients, which results in multiple re-operations with compounding risks. The goal of this study is to investigate the mechanisms of BHV biomaterial degeneration and present models for studying SVD in young patients and juvenile animal models. METHODS AND RESULTS We studied SVD in clinical BHV explants from paediatric and young adult patients, juvenile sheep implantation model, rat subcutaneous implants, and an ex vivo serum incubation model. BHV biomaterials were analysed for calcification, collagen microstructure (alignment and crimp), and crosslinking density. Serum markers of calcification and tissue crosslinking were compared between young and adult subjects. We demonstrated that immature subjects were more susceptible to calcification, microstructural changes, and advanced glycation end products formation. In vivo and ex vivo studies comparing immature and mature subjects mirrored SVD in clinical observations. The interaction between host serum and BHV biomaterials leads to significant structural and biochemical changes which impact their functions. CONCLUSIONS There is an increased risk for accelerated SVD in younger subjects, both experimental animals and patients. Increased calcification, altered collagen microstructure with loss of alignment and increased crimp periods, and increased crosslinking are three main characteristics in BHV explants from young subjects leading to SVD. Together, our studies establish a basis for assessing the increased susceptibility of BHV biomaterials to accelerated SVD in young patients.
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Affiliation(s)
- Yingfei Xue
- Department of Surgery, Columbia University, New York, NY, USA
| | | | - Alexey Abramov
- Department of Surgery, Columbia University, New York, NY, USA
| | - Antonio Frasca
- Department of Surgery, Columbia University, New York, NY, USA
| | - Mingze Sun
- Department of Surgery, Columbia University, New York, NY, USA
| | | | - David Paik
- Department of Ophthalmology, Columbia University, New York, NY, USA
| | - David Kalfa
- Division of Cardiac, Thoracic and Vascular Surgery, Section of Pediatric and Congenital Cardiac Surgery, Department of Surgery, New-York Presbyterian—Morgan Stanley Children’s Hospital, Columbia University Medical Center, New York, NY, USA
| | - Mila Della Barbera
- Department of Cardiac, Thoracic, Vascular Science and Public Health, University of Padua, Medical School, Padua, Italy
| | - Gaetano Thiene
- Department of Cardiac, Thoracic, Vascular Science and Public Health, University of Padua, Medical School, Padua, Italy
| | - Satoshi Kozaki
- Gorman Cardiovascular Research Group, Department of Surgery, Smilow Center for Translational Research, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Takayuki Kawashima
- Gorman Cardiovascular Research Group, Department of Surgery, Smilow Center for Translational Research, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Joseph H Gorman
- Gorman Cardiovascular Research Group, Department of Surgery, Smilow Center for Translational Research, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Robert C Gorman
- Gorman Cardiovascular Research Group, Department of Surgery, Smilow Center for Translational Research, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Matthew J Gillespie
- Gorman Cardiovascular Research Group, Department of Surgery, Smilow Center for Translational Research, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Chrystalle Katte Carreon
- The Cardiac Registry, Department of Cardiology, Boston Children’s Hospital, Boston, MA, USA
- The Cardiac Registry, Department of Pathology, Boston Children’s Hospital, Boston, MA, USA
- The Cardiac Registry, Department of Cardiac Surgery, Boston Children’s Hospital, Boston, MA, USA
- Department of Pathology, Boston Children’s Hospital and Harvard Medical School, Boston, MA, USA
| | - Stephen P Sanders
- The Cardiac Registry, Department of Cardiology, Boston Children’s Hospital, Boston, MA, USA
- The Cardiac Registry, Department of Pathology, Boston Children’s Hospital, Boston, MA, USA
- The Cardiac Registry, Department of Cardiac Surgery, Boston Children’s Hospital, Boston, MA, USA
- Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - Robert J Levy
- The Pediatric Heart Valve Center & Division of Cardiology, Department of Pediatrics, The Children’s Hospital of Philadelphia, Philadelphia, PA, USA
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23
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Yazdani-Ahmadabadi H, Yu K, Khoddami S, F. Felix D, Yeh HH, Luo HD, Moskalev I, Wang Q, Wang R, Grecov D, Fazli L, Lange D, Kizhakkedathu JN. Robust Nanoparticle-Derived Lubricious Antibiofilm Coating for Difficult-to-Coat Medical Devices with Intricate Geometry. ACS NANOSCIENCE AU 2023; 3:67-83. [PMID: 36820095 PMCID: PMC9936578 DOI: 10.1021/acsnanoscienceau.2c00040] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 10/12/2022] [Accepted: 10/13/2022] [Indexed: 06/18/2023]
Abstract
A major medical device-associated complication is the biofilm-related infection post-implantation. One promising approach to prevent this is to coat already commercialized medical devices with effective antibiofilm materials. However, developing a robust high-performance antibiofilm coating on devices with a nonflat geometry remains unmet. Here, we report the development of a facile scalable nanoparticle-based antibiofilm silver composite coating with long-term activity applicable to virtually any objects including difficult-to-coat commercially available medical devices utilizing a catecholic organic-aqueous mixture. Using a screening approach, we have identified a combination of the organic-aqueous buffer mixture which alters polycatecholamine synthesis, nanoparticle formation, and stabilization, resulting in controlled deposition of in situ formed composite silver nanoparticles in the presence of an ultra-high-molecular-weight hydrophilic polymer on diverse objects irrespective of its geometry and chemistry. Methanol-mediated synthesis of polymer-silver composite nanoparticles resulted in a biocompatible lubricious coating with high mechanical durability, long-term silver release (∼90 days), complete inhibition of bacterial adhesion, and excellent killing activity against a diverse range of bacteria over the long term. Coated catheters retained their excellent activity even after exposure to harsh mechanical challenges (rubbing, twisting, and stretching) and storage conditions (>3 months stirring in water). We confirmed its excellent bacteria-killing efficacy (>99.999%) against difficult-to-kill bacteria (Proteus mirabilis) and high biocompatibility using percutaneous catheter infection mice and subcutaneous implant rat models, respectively, in vivo. The developed coating approach opens a new avenue to transform clinically used medical devices (e.g., urinary catheters) to highly infection-resistant devices to prevent and treat implant/device-associated infections.
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Affiliation(s)
- Hossein Yazdani-Ahmadabadi
- Department
of Chemistry, University of British Columbia, Vancouver V6T 1Z3, British Columbia, Canada
- Centre
for Blood Research, Life Science Institute, University of British Columbia, Vancouver V6T 1Z3, British
Columbia, Canada
| | - Kai Yu
- Centre
for Blood Research, Life Science Institute, University of British Columbia, Vancouver V6T 1Z3, British
Columbia, Canada
- Department
of Pathology and Laboratory Medicine, University
of British Columbia, Vancouver V6T 1Z7, British Columbia, Canada
| | - Sara Khoddami
- Department
of Urologic Sciences, University of British
Columbia, Vancouver V6H 3Z6, British Columbia, Canada
- The
Stone Centre at Vancouver General Hospital, Vancouver V5Z 1M9, British Columbia, Canada
| | - Demian F. Felix
- Department
of Urologic Sciences, University of British
Columbia, Vancouver V6H 3Z6, British Columbia, Canada
- The
Stone Centre at Vancouver General Hospital, Vancouver V5Z 1M9, British Columbia, Canada
| | - Han H. Yeh
- Department
of Mechanical Engineering, University of
British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
| | - Haiming D. Luo
- Department
of Chemistry, University of British Columbia, Vancouver V6T 1Z3, British Columbia, Canada
- Centre
for Blood Research, Life Science Institute, University of British Columbia, Vancouver V6T 1Z3, British
Columbia, Canada
| | - Igor Moskalev
- Vancouver
Prostate Centre, University of British Columbia, Vancouver V6H 3Z6, British Columbia, Canada
| | - Qiong Wang
- Department
of Materials Engineering, University of
British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
| | - Rizhi Wang
- Department
of Materials Engineering, University of
British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
- School
of Biomedical Engineering, University of
British Columbia, Vancouver V6T 1Z3, British Columbia, Canada
| | - Dana Grecov
- Department
of Mechanical Engineering, University of
British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
| | - Ladan Fazli
- Vancouver
Prostate Centre, University of British Columbia, Vancouver V6H 3Z6, British Columbia, Canada
| | - Dirk Lange
- Department
of Urologic Sciences, University of British
Columbia, Vancouver V6H 3Z6, British Columbia, Canada
- The
Stone Centre at Vancouver General Hospital, Vancouver V5Z 1M9, British Columbia, Canada
| | - Jayachandran N. Kizhakkedathu
- Department
of Chemistry, University of British Columbia, Vancouver V6T 1Z3, British Columbia, Canada
- Centre
for Blood Research, Life Science Institute, University of British Columbia, Vancouver V6T 1Z3, British
Columbia, Canada
- Department
of Pathology and Laboratory Medicine, University
of British Columbia, Vancouver V6T 1Z7, British Columbia, Canada
- School
of Biomedical Engineering, University of
British Columbia, Vancouver V6T 1Z3, British Columbia, Canada
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24
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Ohayon D, Renn D, Wustoni S, Guo K, Druet V, Hama A, Chen X, Maria IP, Singh S, Griggs S, Schroeder BC, Rueping M, McCulloch I, Inal S. Interactions of Catalytic Enzymes with n-Type Polymers for High-Performance Metabolite Sensors. ACS APPLIED MATERIALS & INTERFACES 2023; 15:9726-9739. [PMID: 36749895 PMCID: PMC9951220 DOI: 10.1021/acsami.2c20502] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 01/25/2023] [Indexed: 06/18/2023]
Abstract
The tight regulation of the glucose concentration in the body is crucial for balanced physiological function. We developed an electrochemical transistor comprising an n-type conjugated polymer film in contact with a catalytic enzyme for sensitive and selective glucose detection in bodily fluids. Despite the promise of these sensors, the property of the polymer that led to such high performance has remained unknown, with charge transport being the only characteristic under focus. Here, we studied the impact of the polymer chemical structure on film surface properties and enzyme adsorption behavior using a combination of physiochemical characterization methods and correlated our findings with the resulting sensor performance. We developed five n-type polymers bearing the same backbone with side chains differing in polarity and charge. We found that the nature of the side chains modulated the film surface properties, dictating the extent of interactions between the enzyme and the polymer film. Quartz crystal microbalance with dissipation monitoring studies showed that hydrophobic surfaces retained more enzymes in a densely packed arrangement, while hydrophilic surfaces captured fewer enzymes in a flattened conformation. X-ray photoelectron spectroscopy analysis of the surfaces revealed strong interactions of the enzyme with the glycolated side chains of the polymers, which improved for linear side chains compared to those for branched ones. We probed the alterations in the enzyme structure upon adsorption using circular dichroism, which suggested protein denaturation on hydrophobic surfaces. Our study concludes that a negatively charged, smooth, and hydrophilic film surface provides the best environment for enzyme adsorption with desired mass and conformation, maximizing the sensor performance. This knowledge will guide synthetic work aiming to establish close interactions between proteins and electronic materials, which is crucial for developing high-performance enzymatic metabolite biosensors and biocatalytic charge-conversion devices.
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Affiliation(s)
- David Ohayon
- Organic
Bioelectronics Laboratory, Biological and Environmental Science and
Engineering Division, King Abdullah University
of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Dominik Renn
- Catalysis
Center, King Abdullah University of Science
and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Shofarul Wustoni
- Organic
Bioelectronics Laboratory, Biological and Environmental Science and
Engineering Division, King Abdullah University
of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Keying Guo
- Organic
Bioelectronics Laboratory, Biological and Environmental Science and
Engineering Division, King Abdullah University
of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Victor Druet
- Organic
Bioelectronics Laboratory, Biological and Environmental Science and
Engineering Division, King Abdullah University
of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Adel Hama
- Organic
Bioelectronics Laboratory, Biological and Environmental Science and
Engineering Division, King Abdullah University
of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Xingxing Chen
- Physical
Science and Engineering Division, KAUST, Thuwal 23955-6900, Saudi Arabia
| | - Iuliana Petruta Maria
- Department
of Chemistry, Chemistry Research Laboratory, University of Oxford, Oxford OX1 3TA, U.K.
| | - Saumya Singh
- Department
of Chemistry, University of College London, 20 Gordon Street, London WC1H 0AJ, U.K.
| | - Sophie Griggs
- Department
of Chemistry, Chemistry Research Laboratory, University of Oxford, Oxford OX1 3TA, U.K.
| | - Bob C. Schroeder
- Department
of Chemistry, University of College London, 20 Gordon Street, London WC1H 0AJ, U.K.
| | - Magnus Rueping
- Catalysis
Center, King Abdullah University of Science
and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Iain McCulloch
- Physical
Science and Engineering Division, KAUST, Thuwal 23955-6900, Saudi Arabia
- Department
of Chemistry, Chemistry Research Laboratory, University of Oxford, Oxford OX1 3TA, U.K.
| | - Sahika Inal
- Organic
Bioelectronics Laboratory, Biological and Environmental Science and
Engineering Division, King Abdullah University
of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
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25
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Hast K, Stone MRL, Jia Z, Baci M, Aggarwal T, Izgu EC. Bioorthogonal Functionalization of Material Surfaces with Bioactive Molecules. ACS APPLIED MATERIALS & INTERFACES 2023; 15:4996-5009. [PMID: 36649474 PMCID: PMC10069157 DOI: 10.1021/acsami.2c20942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The functionalization of material surfaces with biologically active molecules is crucial for enabling technologies in life sciences, biotechnology, and medicine. However, achieving biocompatibility and bioorthogonality with current synthetic methods remains a challenge. We report herein a novel surface functionalization method that proceeds chemoselectively and without a free transition metal catalyst. In this method, a coating is first formed via the tyrosinase-catalyzed putative polymerization of a tetrazine-containing catecholamine (DOPA-Tet). One or more types of molecule of interest containing trans-cyclooctene are then grafted onto the coating via tetrazine ligation. The entire process proceeds under physiological conditions and is suitable for grafting bioactive molecules with diverse functions and structural complexities. Utilizing this method, we functionalized material surfaces with enzymes (alkaline phosphatase, glucose oxidase, and horseradish peroxidase), a cyclic peptide (cyclo[Arg-Gly-Asp-D-Phe-Lys], or c(RGDfK)), and an antibiotic (vancomycin). Colorimetric assays confirmed the maintenance of the biocatalytic activities of the grafted enzymes on the surface. We established the mammalian cytocompatibility of the functionalized materials with fibroblasts. Surface functionalization with c(RGDfK) showed improved fibroblast cell morphology and cytoskeletal organization. Microbiological studies with Staphylococcus aureus indicated that surfaces coated using DOPA-Tet inhibit the formation of biofilms. Vancomycin-grafted surfaces additionally display significant inhibition of planktonic S. aureus growth.
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Affiliation(s)
- Kern Hast
- Department of Chemistry and Chemical Biology, Rutgers University, New Brunswick, New Jersey 08854, United States
| | - M Rhia L Stone
- Department of Chemistry and Chemical Biology, Rutgers University, New Brunswick, New Jersey 08854, United States
| | - Zhaojun Jia
- Department of Chemistry and Chemical Biology, Rutgers University, New Brunswick, New Jersey 08854, United States
| | - Melih Baci
- Department of Chemistry and Chemical Biology, Rutgers University, New Brunswick, New Jersey 08854, United States
| | - Tushar Aggarwal
- Department of Chemistry and Chemical Biology, Rutgers University, New Brunswick, New Jersey 08854, United States
| | - Enver Cagri Izgu
- Department of Chemistry and Chemical Biology, Rutgers University, New Brunswick, New Jersey 08854, United States
- Cancer Pharmacology Program, Cancer Institute of New Jersey, Rutgers University, New Brunswick, New Jersey 08901, United States
- Rutgers Center for Lipid Research, New Jersey Institute for Food, Nutrition, and Health, Rutgers University, New Brunswick, New Jersey 08901, United States
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26
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Deiringer N, Aleshkevich S, Müller C, Friess W. Modification of Tubings for Peristaltic Pumping of Biopharmaceutics. J Pharm Sci 2022; 111:3251-3260. [PMID: 36058256 DOI: 10.1016/j.xphs.2022.08.037] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 08/30/2022] [Accepted: 08/30/2022] [Indexed: 01/05/2023]
Abstract
Protein particle formation during peristaltic pumping of biopharmaceuticals is due to protein film formation on the inner tubing surface followed by rupture of the film by the roller movement. Protein adsorption can be prevented by addition of surfactants as well as by increasing the hydrophilicity of the inner surface. Attempts based on covalent surface coating were mechanically not stable against the stress of roller movement. We successfully incorporated surface segregating smart polymers based on a polydimethylsiloxane (PDMS) backbone and polyethylene glycol (PEG) side blocks in the tubing wall matrix. For this we applied an easy, reproducible and cost-effective process based on soaking of tubing in toluene containing the PDMS-PEG copolymer. With this tubing modification we could drastically reduce protein particle formation during peristaltic pumping of a monoclonal antibody and human growth hormone (HGH) formulation in silicone and thermoplastic elastomer-based tubing. The modification did not impact the tubing integrity during pumping while hydrophilicity was increased and protein adsorption was prevented. Free PDMS-PEG copolymer might have an additional stabilizing effect, but less than 50 ppm of the PDMS-PEG copolymer leached from the modified tubing during 1 h of pumping in the experimental setup. In summary, we present a new method for the modification of tubings which reduces protein adsorption and particle formation during any operation involving peristaltic pumping, e.g. transfer, filling, or tangential flow filtration.
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Affiliation(s)
- Natalie Deiringer
- Department of Pharmacy, Pharmaceutical Technology and Biopharmaceutics, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Sofya Aleshkevich
- Department of Pharmacy, Pharmaceutical Technology and Biopharmaceutics, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Christoph Müller
- Department of Pharmacy, Center for Drug Research, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Wolfgang Friess
- Department of Pharmacy, Pharmaceutical Technology and Biopharmaceutics, Ludwig-Maximilians-University Munich, Munich, Germany.
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27
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Hong JK, Ruhoff AM, Mathur K, Neto C, Waterhouse A. Mechanisms for Reduced Fibrin Clot Formation on Liquid-Infused Surfaces. Adv Healthc Mater 2022; 11:e2201360. [PMID: 36040004 DOI: 10.1002/adhm.202201360] [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: 06/06/2022] [Revised: 08/09/2022] [Indexed: 01/28/2023]
Abstract
Biomedical devices are prone to blood clot formation (thrombosis), and liquid-infused surfaces (LIS) are effective in reducing the thrombotic response. However, the mechanisms that underpin this performance, and in particular the role of the lubricant, are not well understood. In this work, it is investigated whether the mechanism of LIS action is related to i) inhibition of factor XII (FXII) activation and the contact pathway; ii) reduced fibrin density of clots formed on surfaces; iii) increased mobility of proteins or cells on the surface due to the interfacial flow of the lubricant. The chosen LIS is covalently tethered, nanostructured layers of perfluorocarbons, infused with thin films of medical-grade perfluorodecalin (tethered-liquid perfluorocarbon), prepared with chemical vapor deposition previously optimized to retain lubricant under flow. Results show that in the absence of external flow, interfacial mobility is inherently higher at the liquid-blood interface, making it a key contributor to the low thrombogenicity of LIS, as FXII activity and fibrin density are equivalent at the interface. The findings of this study advance the understanding of the anti-thrombotic behavior of LIS-coated biomedical devices for future coating design. More broadly, enhanced interfacial mobility may be an important, underexplored mechanism for the anti-fouling behavior of surface coatings.
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Affiliation(s)
- Jun Ki Hong
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia.,School of Medical Science, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia.,Heart Research Institute, The University of Sydney, Newtown, NSW 2042, Australia.,The University of Sydney Nano Institute, The University of Sydney, Sydney, NSW 2006, Australia.,The Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia
| | - Alexander M Ruhoff
- Heart Research Institute, The University of Sydney, Newtown, NSW 2042, Australia.,The Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia.,Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia
| | - Kavya Mathur
- Heart Research Institute, The University of Sydney, Newtown, NSW 2042, Australia.,The Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia.,School of Biomedical Engineering, Faculty of Engineering, The University of Sydney, Sydney, NSW 2006, Australia
| | - Chiara Neto
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia.,The University of Sydney Nano Institute, The University of Sydney, Sydney, NSW 2006, Australia
| | - Anna Waterhouse
- School of Medical Science, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia.,Heart Research Institute, The University of Sydney, Newtown, NSW 2042, Australia.,The University of Sydney Nano Institute, The University of Sydney, Sydney, NSW 2006, Australia.,The Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia
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28
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Coron A, Fonseca DM, Sharma A, Slupphaug G, Strand BL, Rokstad AMA. MS-proteomics provides insight into the host responses towards alginate microspheres. Mater Today Bio 2022; 17:100490. [DOI: 10.1016/j.mtbio.2022.100490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 11/08/2022] [Accepted: 11/09/2022] [Indexed: 11/13/2022] Open
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29
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Tanum J, Choi M, Jeong H, Park S, Sutthiwanjampa C, Park H, Hong J. Generation of zinc ion-rich surface via in situ growth of ZIF-8 particle: Microorganism immobilization onto fabric surface for prohibit hospital-acquired infection. CHEMICAL ENGINEERING JOURNAL (LAUSANNE, SWITZERLAND : 1996) 2022; 446:137054. [PMID: 35601362 PMCID: PMC9116044 DOI: 10.1016/j.cej.2022.137054] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 05/01/2022] [Accepted: 05/15/2022] [Indexed: 06/15/2023]
Abstract
Viruses/bacteria outbreaks have motivated us to develop a fabric that will inhibit their transmission with high potency and long-term stability. By creating a metal-ion-rich surface onto polyester (PET) fabric, a method is found to inhibit hospital-acquired infections by immobilizing microorganisms on its surface. ZIF-8 and APTES are utilized to overcome the limitations associated with non-uniform distribution, weak biomolecule interaction, and ion leaching on surfaces. Modified surfaces employing APTES enhance ZIF-8 nucleation by generating a monolayer of self-assembled amine molecules. An in-situ growth approach is then used to produce evenly distributed ZIF-8 throughout it. In comparison with pristine fabric, this large amount of zinc obtained from the modification of the fabric has a higher affinity for interacting with membranes of microorganisms, leading to a 4.55-fold increase in coronavirus spike-glycoprotein immobilization. A series of binding ability stability tests on the surface demonstrate high efficiency of immobilization, >90%, of viruses and model proteins. The immobilization capacity of the modification fabric stayed unchanged after durability testing, demonstrating its durability and stability. It has also been found that this fabric surface modification approach has maintained air/vapor transmittance and air permeability levels comparable to pristine fabrics. These results strongly advocate this developed fabric has the potential for use as an outer layer of face masks or as a medical gown to prevent hospital-acquired infections.
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Affiliation(s)
- Junjira Tanum
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Moonhyun Choi
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Hyejoong Jeong
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Sohyeon Park
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | | | - Hansoo Park
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Jinkee Hong
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea
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30
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Tan JKS, Song SW, Zeng J, Lo CH. A hand-targeted auxiliary personal protective equipment for intervention of fomite transmission of viruses. Bioeng Transl Med 2022; 8:e10411. [PMID: 36248233 PMCID: PMC9538315 DOI: 10.1002/btm2.10411] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 08/26/2022] [Accepted: 08/30/2022] [Indexed: 12/03/2022] Open
Abstract
In COVID-19, fomite transmission has been shown to be a major route for the spreading of the SARS-CoV-2 virus due to its ability to remain on surfaces for extended durations. Although glove wearing can mitigate the risk of viral transmission especially on high touch points, it is not prevalent due to concerns on diversion of frontline medical resources, cross-contamination, social stigma, as well as discomfort and skin reactions derived from prolonged wearing. In this study, we developed FlexiPalm, a hand-targeted auxiliary personal protective equipment (PPE) against fomite transmission of viruses. FlexiPalm is a unique palmar-side hand protector designed to be skin-conforming and transparent, fabricated from medical-grade polyurethane transparent film material as a base substrate. It serves primarily as a barrier to microbial contamination like conventional gloves, but with augmented comfort and inconspicuousness to encourage a higher public adoption rate. Compared to conventional glove materials, FlexiPalm demonstrated enhanced mechanical durability and breathability, comparable hydrophobicity, and displayed a minimal adsorption of SARS-CoV-2 spike protein and virus-like particles (VLP). Importantly, FlexiPalm was found to bind significantly less viral protein and VLP than artificial human skin, confirming its ability to reduce viral contamination. A pilot study involving participants completing activities of daily living showed a high level of comfort and task completion, illustrating the usability and functionality of FlexiPalm. Moreover, we have demonstrated that surface modification of FlexiPalm with microtextures enables further reduction in viral adsorption, thereby enhancing its functionality. An effective implementation of FlexiPalm will bolster PPE sustainability and lead to a paradigm shift in the global management of COVID-19 and other infectious diseases in general.
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Affiliation(s)
- Justin Kok Soon Tan
- Department of Biomedical EngineeringNational University of SingaporeSingaporeSingapore
- The N.1 Institute for HealthNational University of SingaporeSingaporeSingapore
| | - Shang Wei Song
- Department of Biomedical EngineeringNational University of SingaporeSingaporeSingapore
- The N.1 Institute for HealthNational University of SingaporeSingaporeSingapore
| | - Jialiu Zeng
- Lee Kong Chian School of MedicineNanyang Technological UniversitySingaporeSingapore
| | - Chih Hung Lo
- Lee Kong Chian School of MedicineNanyang Technological UniversitySingaporeSingapore
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31
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Correira JM, Handali PR, Webb LJ. Characterizing Protein-Surface and Protein-Nanoparticle Conjugates: Activity, Binding, and Structure. J Chem Phys 2022; 157:090902. [DOI: 10.1063/5.0101406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Many sensors and catalysts composed of proteins immobilized on inorganic materials have been reported over the past few decades. Despite some examples of functional protein-surface and protein-nanoparticle conjugates, thorough characterization of the biological-abiological interface at the heart of these materials and devices is often overlooked in lieu of demonstrating acceptable system performance. This has resulted in a focus on generating functioning protein-based devices without a concerted effort to develop reliable tools necessary to measure the fundamental properties of the bio-abio interface such as surface concentration, biomolecular structure, and activity. In this Perspective we discuss current methods used to characterize these critical properties of devices that operate by integrating a protein into both flat surfaces and nanoparticle materials. We highlight the advantages and drawbacks of each method as they relate to understanding the function of the protein-surface interface, and explore the manner in which an informed understanding of this complex interaction leads directly to the advancement of protein-based materials and technology.
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Affiliation(s)
| | - Paul R Handali
- The University of Texas at Austin, United States of America
| | - Lauren J. Webb
- Chemistry, The University of Texas at Austin Department of Chemistry, United States of America
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32
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Hou Z, Chen S, Hu W, Guo J, Li P, Hu J, Yang L. Long-term in vivo degradation behavior of poly(trimethylene carbonate-co-2, 2′-dimethyltrimethylene carbonate). Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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33
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Palai D, Tahara H, Chikami S, Latag GV, Maeda S, Komura C, Kurioka H, Hayashi T. Prediction of Serum Adsorption onto Polymer Brush Films by Machine Learning. ACS Biomater Sci Eng 2022; 8:3765-3772. [PMID: 35905395 DOI: 10.1021/acsbiomaterials.2c00441] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Using machine learning based on a random forest (RF) regression algorithm, we attempted to predict the amount of adsorbed serum protein on polymer brush films from the films' physicochemical information and the monomers' chemical structures constituting the films using a RF model. After the training of the RF model using the data of polymer brush films synthesized from five different types of monomers, the model became capable of predicting the amount of adsorbed protein from the chemical structure, physicochemical properties of monomer molecules, and structural parameters (density and thickness of the films). The analysis of the trained RF quantitatively provided the importance of each structural parameter and physicochemical properties of monomers toward serum protein adsorption (SPA). The ranking for the significance of the parameters agrees with our general understanding and perception. Based on the results, we discuss the correlation between brush film's physical properties (such as thickness and density) and SPA and attempt to provide a guideline for the design of antibiofouling polymer brush films.
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Affiliation(s)
- Debabrata Palai
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 4259 Nagatsuta-Cho Midori-Ku, Yokohama, Kanagawa 226-8502, Japan
| | - Hiroyuki Tahara
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 4259 Nagatsuta-Cho Midori-Ku, Yokohama, Kanagawa 226-8502, Japan
| | - Shunta Chikami
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 4259 Nagatsuta-Cho Midori-Ku, Yokohama, Kanagawa 226-8502, Japan
| | - Glenn Villena Latag
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 4259 Nagatsuta-Cho Midori-Ku, Yokohama, Kanagawa 226-8502, Japan
| | - Shoichi Maeda
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 4259 Nagatsuta-Cho Midori-Ku, Yokohama, Kanagawa 226-8502, Japan
| | - Chisato Komura
- Research Institute for Advanced Materials and Devices, Kyocera Corporation, 3-5-3 Hikaridai, Seika-Cho, Soraku-gun, Kyoto 619-0237, Japan
| | - Hideharu Kurioka
- Research Institute for Advanced Materials and Devices, Kyocera Corporation, 3-5-3 Hikaridai, Seika-Cho, Soraku-gun, Kyoto 619-0237, Japan
| | - Tomohiro Hayashi
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 4259 Nagatsuta-Cho Midori-Ku, Yokohama, Kanagawa 226-8502, Japan.,The Institute for Solid State Physics, the University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba, 277-0882, Japan
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34
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Abstract
Single-cell proteomics is a promising field to provide direct yet comprehensive molecular insights into cellular functions without averaging effects. Here, we address a grand technical challenge impeding the maturation of single-cell proteomics─protein adsorption loss (PAL). Even though widely known, there is currently no quantitation on how profoundly and selectively PAL has affected single-cell proteomics. Therefore, the mitigations to this challenge have been generic, and their efficacy was only evaluated by the size of the resolved proteome with no specificity on individual proteins. We use the existing knowledge of PAL, protein expression, and the typical surface area used in single-cell proteomics to discuss the severity of protein loss. We also summarize the current solutions to this challenge and briefly review the available methods to characterize the physical and chemical properties of protein surface adsorption. By citing successful strategies in single-cell genomics for measurement errors in individual transcripts, we pinpoint the urgency to benchmark PAL at the proteome scale with individual protein resolution. Finally, orthogonal single-cell proteomic techniques that have the potential to cross validate PAL are proposed. We hope these efforts can promote the fruition of single-cell proteomics in the near future.
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Affiliation(s)
- Bingyun Sun
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada.,Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
| | - Sharwan Kumar
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
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35
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de Brito Soares AL, Maia MT, Gomes SDL, da Silva TF, Vieira RS. Polysaccharide-based bioactive adsorbents for blood-contacting implant devices. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2022. [DOI: 10.1007/s43153-022-00253-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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36
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Lubrication properties of model dairy beverages: Effect of the characteristics of protein dispersions and emulsions. Food Res Int 2022; 157:111209. [DOI: 10.1016/j.foodres.2022.111209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 03/29/2022] [Accepted: 03/31/2022] [Indexed: 11/17/2022]
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37
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Hinderink EB, Meinders MB, Miller R, Sagis L, Schroën K, Berton-Carabin CC. Interfacial protein-protein displacement at fluid interfaces. Adv Colloid Interface Sci 2022; 305:102691. [PMID: 35533557 DOI: 10.1016/j.cis.2022.102691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 04/24/2022] [Accepted: 04/30/2022] [Indexed: 11/01/2022]
Abstract
Protein blends are used to stabilise many traditional and emerging emulsion products, resulting in complex, non-equilibrated interfacial structures. The interface composition just after emulsification is dependent on the competitive adsorption between proteins. Over time, non-adsorbed proteins are capable of displacing the initially adsorbed ones. Such rearrangements are important to consider, since the integrity of the interfacial film could be compromised after partial displacement, which may result in the physical destabilisation of emulsions. In the present review, we critically describe various experimental techniques to assess the interfacial composition, properties and mechanisms of protein displacement. The type of information that can be obtained from the different techniques is described, from which we comment on their suitability for displacement studies. Comparative studies between model interfaces and emulsions allow for evaluating the impact of minor components and the different fluid dynamics during interface formation. We extensively discuss available mechanistic physical models that describe interfacial properties and the dynamics of complex mixed systems, with a focus on protein in-plane and bulk-interface interactions. The potential of Brownian dynamic simulations to describe the parameters that govern interfacial displacement is also addressed. This review thus provides ample information for characterising the interfacial properties over time in protein blend-stabilised emulsions, based on both experimental and modelling approaches.
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38
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Zhao Y, Bai L, Zhang Y, Yao R, Sun Y, Hang R, Chen X, Wang H, Yao X, Xiao Y, Hang R. Type I collagen decorated nanoporous network on titanium implant surface promotes osseointegration through mediating immunomodulation, angiogenesis, and osteogenesis. Biomaterials 2022; 288:121684. [DOI: 10.1016/j.biomaterials.2022.121684] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 06/10/2022] [Accepted: 07/14/2022] [Indexed: 12/29/2022]
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39
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Strategies for the Biofunctionalization of Straining Flow Spinning Regenerated Bombyx mori Fibers. Molecules 2022; 27:molecules27134146. [PMID: 35807389 PMCID: PMC9267934 DOI: 10.3390/molecules27134146] [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: 05/26/2022] [Revised: 06/24/2022] [Accepted: 06/25/2022] [Indexed: 11/16/2022] Open
Abstract
High-performance regenerated silkworm (Bombyx mori) silk fibers can be produced efficiently through the straining flow spinning (SFS) technique. In addition to an enhanced biocompatibility that results from the removal of contaminants during the processing of the material, regenerated silk fibers may be functionalized conveniently by using a range of different strategies. In this work, the possibility of implementing various functionalization techniques is explored, including the production of fluorescent fibers that may be tracked when implanted, the combination of the fibers with enzymes to yield fibers with catalytic properties, and the functionalization of the fibers with cell-adhesion motifs to modulate the adherence of different cell lineages to the material. When considered globally, all these techniques are a strong indication not only of the high versatility offered by the functionalization of regenerated fibers in terms of the different chemistries that can be employed, but also on the wide range of applications that can be covered with these functionalized fibers.
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40
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Yadav HOS, Kuo AT, Urata S, Funahashi K, Imamura Y, Shinoda W. Adsorption characteristics of peptides on ω-functionalized self-assembled monolayers: a molecular dynamics study. Phys Chem Chem Phys 2022; 24:14805-14815. [PMID: 35695085 DOI: 10.1039/d2cp01348g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Molecular dynamics simulations were employed to investigate the adsorption behavior of a variety of amino-acid side-chain analogs (SCAs) and a β-hairpin (HP7) peptide on a series of liquid-like self-assembled monolayers (SAMs) with terminal functional groups of -OH, -OCH3, -CH3, and -CF3. The relationships between the adsorption free energy of the SCAs and the interfacial properties of water on the SAMs were examined to determine the acute predictors of protein adsorption on the SAM surfaces. The structural changes of HP7 on the SAM surfaces were also investigated to understand the relationship between the surface nature and protein denaturation. It was found that the adsorption free energy of the SCAs was linearly related to the surface hydrophobicity, which was computed as the free energy of cavity formation near the SAM-water interfaces. In addition, the hydrophobic -CH3 and -CF3 SAMs produced substantial conformational changes in HP7 because of the strong hydrophobic attractions to the nonpolar side chains. The hydrophilic surface terminated by -OH also promoted structural changes in HP7 resulting from the formation of hydrogen bonds between the hydrophilic tail and HP7. Consequently, the moderate amphiphilic surface terminated by -OCH3 avoided the denaturation of HP7 most efficiently, thus improving the biocompatibility of the surface. In conclusion, these results provide a deep understanding of protein adsorption for a wide range of polymeric surfaces, and they can potentially aid the design of appropriate biocompatible coatings for medical applications.
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Affiliation(s)
- Hari O S Yadav
- Department of Materials Chemistry, Nagoya University, Nagoya 464-8603, Japan
| | - An-Tsung Kuo
- Materials Integration Laboratories, AGC Inc., Yokohama, Kanagawa, 230-0045, Japan
| | - Shingo Urata
- Planning Division, AGC Inc., Yokohama, Kanagawa, 230-0045, Japan
| | - Kosuke Funahashi
- Innovative Technology Laboratories, AGC Inc., Yokohama, Kanagawa, 230-0045, Japan
| | - Yutaka Imamura
- Innovative Technology Laboratories, AGC Inc., Yokohama, Kanagawa, 230-0045, Japan
| | - Wataru Shinoda
- Department of Materials Chemistry, Nagoya University, Nagoya 464-8603, Japan.,Research Institute for Interdisciplinary Science, Okayama University, Okayama 700-8530, Japan. .,Department of Chemistry, Faculty of Science, Okayama University, Okayama 700-8530, Japan
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41
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Gutknecht MF, Kaku H, Rothstein TL. Microparticle immunocapture assay for quantitation of protein multimer amount and size. CELL REPORTS METHODS 2022; 2:100214. [PMID: 35637905 PMCID: PMC9142677 DOI: 10.1016/j.crmeth.2022.100214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 12/13/2021] [Accepted: 04/19/2022] [Indexed: 11/23/2022]
Abstract
Cellular stress and toxicity are often associated with the formation of protein multimers, or aggregates. Numerous degenerative disorders, including Alzheimer's, Parkinson's, and Huntington's disease, prion-propagated disease, amyotrophic lateral sclerosis, cardiac amyloidosis, and diabetes, are characterized by aggregated protein deposits. Current methods are limited in the ability to assess multimer size along with multimer quantitation and to incorporate one or more ancillary traits, including target specificity, operative simplicity, and process speed. Here, we report development of a microparticle immunocapture assay that combines the advantages inherent to a monoclonal antibody:protein interaction with highly quantitative flow cytometry analysis. Using established reagents to build our platform, and aggregation-prone amyloid beta 1-42 peptide (Aβ42) and alpha-synuclein to demonstrate proof of principle, our results indicate that this assay is a highly adaptable method to measure multimer size and quantity at the same time in a technically streamlined workflow applicable to laboratory and clinical samples.
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Affiliation(s)
- Michael F. Gutknecht
- Department of Investigative Medicine and Center for Immunobiology, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI, USA
| | - Hiroaki Kaku
- Department of Investigative Medicine and Center for Immunobiology, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI, USA
| | - Thomas L. Rothstein
- Department of Investigative Medicine and Center for Immunobiology, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI, USA
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42
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Wu X, Ge L, Shen G, He Y, Xu Z, Li D, Mu C, Zhao L, Zhang W. 131I-Labeled Silk Fibroin Microspheres for Radioembolic Therapy of Rat Hepatocellular Carcinoma. ACS APPLIED MATERIALS & INTERFACES 2022; 14:21848-21859. [PMID: 35507826 DOI: 10.1021/acsami.2c00211] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Transarterial radioembolization (TARE) is a promising technology in hepatocellular carcinoma (HCC) therapy, which utilizes radionuclide-labeled microspheres to achieve arterial embolization and internal irradiation. However, the therapeutic effect of liver cancer can be affected by low radionuclide labeling rate and stability, as well as poor biocompatibility, and non-biodegradability of microspheres. Here, 131I-labeled silk fibroin microspheres (131I-SFMs) were developed as radioembolization material for effective TARE therapy against HCC. Silk fibroin rich in 10.03% of tyrosine was extracted from silkworm cocoons and then emulsified and genipin-crosslinked to prepare SFMs. SFMs show a good settlement rate, biodegradability, hemocompatibility, and low cytotoxicity. Afterward, 131I-SFMs were obtained by radiolabeling 131I onto the SFMs through the chloramine-T method. 131I-SFMs possess a high 131I labeling rate of over 84% and good radioactive stability and are thus conducive to internal radiotherapy. Significantly, 131I-SFMs with diameters around 11 μm were successfully radioembolized at the hepatic artery. 131I-SFMs were diffused in the liver, indicating the favorable biodistribution and biosafety in vivo. Based on the combination of embolization and local radiotherapy, the administration of 131I-SFMs shows a favorable inhibitive effect against the progression of HCC. Overall, the newly developed 131I-SFMs as radioembolization microspheres provide a promising application for effective TARE therapy against liver cancer.
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Affiliation(s)
- Xiao Wu
- Department of Pharmaceutics and Bioengineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Liming Ge
- Department of Pharmaceutics and Bioengineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Guohua Shen
- Laboratory of Clinical Nuclear Medicine, Department of Nuclear Medicine, West China Hospital, Sichuan University, Chengdu 610041, P. R. China
| | - Ying He
- Department of Ultrasound, West China Hospital, Sichuan University, Chengdu 610041, P. R. China
| | - Zhilang Xu
- Department of Pharmaceutics and Bioengineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Defu Li
- Department of Pharmaceutics and Bioengineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Changdao Mu
- Department of Pharmaceutics and Bioengineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Lei Zhao
- Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - Wenjie Zhang
- Laboratory of Clinical Nuclear Medicine, Department of Nuclear Medicine, West China Hospital, Sichuan University, Chengdu 610041, P. R. China
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43
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Immunospecific analysis of in vitro and ex vivo surface-immobilized protein complex. Biointerphases 2022; 17:021005. [PMID: 35477241 DOI: 10.1116/6.0001783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Biomaterials used for blood contacting devices are inherently thrombogenic. Antithrombotic agents can be used as surface modifiers on biomaterials to reduce thrombus formation on the surface and to maintain device efficacy. For quality control and to assess the effectiveness of immobilization strategies, it is necessary to quantify the surface-immobilized antithrombotic agent directly. There are limited methods that allow direct quantification on device surfaces such as catheters. In this study, an enzyme immunoassay (EIA) has been developed to measure the density of a synthetic antithrombin-heparin (ATH) covalent complex immobilized on a catheter surface. The distribution of the immobilized ATH was further characterized by an immunohistochemical assay. This analyte-specific EIA is relatively simple and has high throughput, thus providing a tool for quantitative analysis of biomaterial surface modifications. These methods may be further modified to evaluate plasma proteins adsorbed and immobilized on various biomaterial surfaces of complex shapes, with a range of bioactive functionalities, as well as to assess conformational changes of proteins using specific antibodies.
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44
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Dai J, Hu JJ, Dong X, Chen B, Dong X, Liu R, Xia F, Lou X. Deep Downregulation of PD-L1 by Caged Peptide-Conjugated AIEgen/miR-140 Nanoparticles for Enhanced Immunotherapy. Angew Chem Int Ed Engl 2022; 61:e202117798. [PMID: 35224832 DOI: 10.1002/anie.202117798] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Indexed: 12/11/2022]
Abstract
Downregulating programmed cell death ligand 1(PD-L1) protein levels in tumor cells is an effective way to achieve immune system activation for oncology treatment, but current strategies are inadequate. Here, we design a caged peptide-AIEgen probe (GCP) to self-assemble with miR-140 forming GCP/miR-140 nanoparticles. After entering tumor cells, GCP/miR-140 disassembles in the presence of Cathepsin B (CB) and releases caged GO203 peptide, miR-140 and PyTPA. Peptide decages in the highly reductive intracellular environment and binds to mucin 1 (MUC1), thereby downregulating the expression of PD-L1. Meanwhile, miR-140 reduces PD-L1 expression by targeting downregulation of PD-L1 mRNA. Under the action of PyTPA-mediated photodynamic therapy (PDT), tumor-associated antigens are released, triggering immune cell attack on tumor cells. This multiple mechanism-based strategy of deeply downregulating PD-L1 in tumor cells activates the immune system and thus achieves effective immunotherapy.
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Affiliation(s)
- Jun Dai
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430034, China
| | - Jing-Jing Hu
- State Key Laboratory of Biogeology and Environmental Geology, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China
| | - Xiaoqi Dong
- State Key Laboratory of Biogeology and Environmental Geology, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China
| | - Biao Chen
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430034, China
| | - Xiyuan Dong
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430034, China
| | - Rui Liu
- State Key Laboratory of Biogeology and Environmental Geology, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China
| | - Fan Xia
- State Key Laboratory of Biogeology and Environmental Geology, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China
| | - Xiaoding Lou
- State Key Laboratory of Biogeology and Environmental Geology, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China
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45
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Adsorption of arabinogalactan-proteins from Acacia gums (senegal and seyal) and its molecular fractions onto latex particles. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2021.107360] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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46
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Bierman-Duquette RD, Safarians G, Huang J, Rajput B, Chen JY, Wang ZZ, Seidlits SK. Engineering Tissues of the Central Nervous System: Interfacing Conductive Biomaterials with Neural Stem/Progenitor Cells. Adv Healthc Mater 2022; 11:e2101577. [PMID: 34808031 PMCID: PMC8986557 DOI: 10.1002/adhm.202101577] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 10/31/2021] [Indexed: 12/19/2022]
Abstract
Conductive biomaterials provide an important control for engineering neural tissues, where electrical stimulation can potentially direct neural stem/progenitor cell (NS/PC) maturation into functional neuronal networks. It is anticipated that stem cell-based therapies to repair damaged central nervous system (CNS) tissues and ex vivo, "tissue chip" models of the CNS and its pathologies will each benefit from the development of biocompatible, biodegradable, and conductive biomaterials. Here, technological advances in conductive biomaterials are reviewed over the past two decades that may facilitate the development of engineered tissues with integrated physiological and electrical functionalities. First, one briefly introduces NS/PCs of the CNS. Then, the significance of incorporating microenvironmental cues, to which NS/PCs are naturally programmed to respond, into biomaterial scaffolds is discussed with a focus on electrical cues. Next, practical design considerations for conductive biomaterials are discussed followed by a review of studies evaluating how conductive biomaterials can be engineered to control NS/PC behavior by mimicking specific functionalities in the CNS microenvironment. Finally, steps researchers can take to move NS/PC-interfacing, conductive materials closer to clinical translation are discussed.
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Affiliation(s)
| | - Gevick Safarians
- Department of Bioengineering, University of California Los Angeles, USA
| | - Joyce Huang
- Department of Bioengineering, University of California Los Angeles, USA
| | - Bushra Rajput
- Department of Bioengineering, University of California Los Angeles, USA
| | - Jessica Y. Chen
- Department of Bioengineering, University of California Los Angeles, USA
- David Geffen School of Medicine, University of California Los Angeles, USA
| | - Ze Zhong Wang
- Department of Bioengineering, University of California Los Angeles, USA
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47
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Correira JM, Webb LJ. Formation and Characterization of a Stable Monolayer of Active Acetylcholinesterase on Planar Gold. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:3501-3513. [PMID: 35276042 DOI: 10.1021/acs.langmuir.1c03399] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Enzyme activity is the basis for many biosensors where a catalytic event is used to detect the presence and amount of a biomolecule of interest. To create a practical point-of-care biosensor, these enzymes need to be removed from their native cellular environments and immobilized on an abiological surface to rapidly transduce a biochemical signal into an interpretable readout. This immobilization often leads to loss of activity due to unfolded, aggregated, or improperly oriented enzymes when compared to the native state. In this work, we characterize the formation and surface packing density of a stable monolayer of acetylcholinesterase (AChE) immobilized on a planar gold surface and quantify the extent of activity loss following immobilization. Using spectroscopic ellipsometry, we determined that the surface concentration of AChE on a saturated Au surface in a buffered solution was 2.77 ± 0.21 pmol cm-2. By calculating the molecular volume of hydrated AChE, corresponding to a sphere of 6.19 nm diameter, divided by the total volume at the AChE-Au interface, we obtain a surface packing density of 33.4 ± 2.5% by volume. This corresponds to 45.1 ± 3.4% of the theoretical maximum monolayer coverage, assuming hexagonal packing. The true value, however, may be larger due to unfolding of enzymes to occupy a larger volume. The enzyme activity and kinetic measurements showed a 90.6 ± 1.4% decrease in specific activity following immobilization. Finally, following storage in a buffered solution for over 100 days at both room temperature and 4 °C, approximately 80% of this enzyme activity was retained. This contrasts with the native aqueous enzyme, which loses approximately 75% of its activity within 1 day and becomes entirely inactive within 6 days.
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Affiliation(s)
- Joshua M Correira
- Department of Chemistry, Texas Materials Institute, and Interdisciplinary Life Sciences Program, The University of Texas at Austin, 105 E 24th St. STOP A5300, Austin, Texas 78712-1224, United States
| | - Lauren J Webb
- Department of Chemistry, Texas Materials Institute, and Interdisciplinary Life Sciences Program, The University of Texas at Austin, 105 E 24th St. STOP A5300, Austin, Texas 78712-1224, United States
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48
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Poly-Alanine-ε-Caprolacton-Methacrylate as Scaffold Material with Tuneable Biomechanical Properties for Osteochondral Implants. Int J Mol Sci 2022; 23:ijms23063115. [PMID: 35328536 PMCID: PMC8951525 DOI: 10.3390/ijms23063115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 03/12/2022] [Accepted: 03/13/2022] [Indexed: 02/01/2023] Open
Abstract
An aging population and injury-related damage of the bone substance lead to an increasing need of innovative materials for the regeneration of osteochondral defects. Biodegradable polymers form the basis for suitable artificial implants intended for bone replacement or bone augmentation. The great advantage of these structures is the site-specific implant design, which leads to a considerable improvement in patient outcomes and significantly reduced post-operative regeneration times. Thus, biomechanical and biochemical parameters as well as the rate of degradation can be set by the selection of the polymer system and the processing technology. Within this study, we developed a polymer platform based on the amino acid Alanine and ε-Caprolacton for use as raw material for osteochondral implants. The biomechanical and degradation properties of these Poly-(Alanine-co-ε-Caprolacton)-Methacrylate (ACM) copolymers can be adjusted by changing the ratio of the monomers. Fabrication of artificial structures for musculo-skeletal tissue engineering was done by Two-Photon-Polymerization (2PP), which represents an innovative technique for generating defined scaffolds with tailor-made mechanical and structural properties. Here we show the synthesis, physicochemical characterization, as well as first results for structuring ACM using 2PP technology. The data demonstrate the high potential of ACM copolymers as precursors for the fabrication of biomimetic implants for bone-cartilage reconstruction.
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49
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Deep Downregulation of PD‐L1 by Caged Peptide‐Conjugated AIEgen/miR‐140 Nanoparticles for Enhanced Immunotherapy. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202117798] [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]
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50
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Uddin MJ, Liyanage S, Warzywoda J, Abidi N, Gill HS. Role of Sporopollenin Shell Interfacial Properties in Protein Adsorption. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:2763-2776. [PMID: 35212551 DOI: 10.1021/acs.langmuir.1c02682] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Sporopollenin shells isolated from natural pollen grains have received attention in translational and applied research in diverse fields of drug delivery, vaccine delivery, and wastewater remediation. However, little is known about the sporopollenin shell's potential as an adsorbent. Herein, we have isolated sporopollenin shells from four structurally diverse pollen species, black walnut, marsh elder, mugwort, and silver birch, to study protein adsorption onto sporopollenin shells. We investigated three major interfacial properties, surface area, surface functional groups, and surface charge, to elucidate the mechanism of protein adsorption onto sporopollenin shells. We showed that sporopollenin shells have a moderate specific surface area (<12 m2/g). Phosphoric acid and potassium hydroxide treatments that were used to isolate sporopollenin shells from natural pollen grains also result in the functionalization of sporopollenin shell surfaces with ionizable groups of carboxylic acid and carboxylate salt. As a result, sporopollenin shells exhibit a negative ζ potential in the range of -75 to -82 mV at pH 10 when dispersed in water. The ζ potentials of sporopollenin shells remain negative in the pH range of 2.5-11, with the absolute value of ζ potential showing a decrease with the decrease in pH. The negative surface charge promotes the adsorption of protein onto the sporopollenin shell via electrostatic interaction. Despite having a moderate surface area, sporopollenin shells adsorb a significant amount of lysozyme (145-340 μg lysozyme per mg of sporopollenin shells). Lysozyme adsorption onto sporopollenin shells alters the surface, and the surface charge becomes positive at acidic pH. Overall, this study demonstrates the potential of sporopollenin shells to adsorb proteins, highlights the critical role of sporopollenin shell's interfacial properties in protein adsorption, and identifies the mechanism of protein adsorption on sporopollenin shells.
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Affiliation(s)
- Md Jasim Uddin
- Department of Chemical Engineering, Texas Tech University, 2500 Broadway, Lubbock, Texas 79409, United States
| | - Sumedha Liyanage
- Fiber and Biopolymer Research Institute, Texas Tech University, 1001 East Loop 289, Lubbock, Texas 79409, United States
- Department of Plant and Soil Science, Texas Tech University, 2500 Broadway, Lubbock, Texas 79409, United States
| | - Juliusz Warzywoda
- Materials Characterization Center, Whitacre College of Engineering, Texas Tech University, 2500 Broadway, Lubbock, Texas 79409, United States
| | - Noureddine Abidi
- Fiber and Biopolymer Research Institute, Texas Tech University, 1001 East Loop 289, Lubbock, Texas 79409, United States
- Department of Plant and Soil Science, Texas Tech University, 2500 Broadway, Lubbock, Texas 79409, United States
| | - Harvinder Singh Gill
- Department of Chemical Engineering, Texas Tech University, 2500 Broadway, Lubbock, Texas 79409, United States
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