1
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Sun Q, Xu B, Du J, Yu Y, Huang Y, Deng X. Interfacial electrostatic charges promoted chemistry: Reactions and mechanisms. Adv Colloid Interface Sci 2025; 339:103436. [PMID: 39938156 DOI: 10.1016/j.cis.2025.103436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2024] [Revised: 12/19/2024] [Accepted: 02/05/2025] [Indexed: 02/14/2025]
Abstract
Interfacial electrostatic charges are a universal phenomenon in nature. In recent years, interest in the chemical reactivity of electrostatic charges has grown. Interfacial electrostatic charge-driven chemical synthesis reduces the reliance on redox reagents, catalysts, and hazardous solvents, which promotes environmental sustainability and cost-effectiveness in the chemical industry. Electrostatic charges can be generated at the interfaces between solids, liquids, and gases. The chemical properties of electrostatic charges have been observed at interfaces between solids and liquids, and between liquids and gases. This review summarized the chemical reactivity of interfacial electrostatic charges and its mechanisms. Electrostatic charges play a fundamental role in providing electrons and creating electric fields, which in turn induce charge transfer, radical formation, and molecular orientation. We classified the role of interfacial charges in chemical reactions and provided new perspectives. Interfacial electrostatic charges can be generated with mechanical energy input, a power supply and interface transition from solid-liquid to liquid-gas. Redox and catalytic reactions involving inorganic, organic compounds and biomolecules are driven by interfacial electrostatic charges. Electrostatic chemistry mechanisms are currently a subject of debate because there is insufficient experimental evidence. Challenges and opportunities associated with interfacial electrostatic chemistry are discussed. Knowledge of the reactivity of interfacial electrostatic charges could be used to understand electrostatic phenomena in nature, advance green chemistry, and even study the origins of life. We expect this emerging topic will appeal to scientists in disciplines including interfacial chemistry and electrostatics.
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Affiliation(s)
- Qiangqiang Sun
- Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu 610031, China.
| | - Boran Xu
- Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu 610031, China
| | - Jinyan Du
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Yunlong Yu
- Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu 610031, China
| | - Yujie Huang
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Xu Deng
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China; Shenzhen Institute for Advanced Study, University of Electronic Science and Technology of China, Shenzhen 518110, China.
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2
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Saikia J, Sarkar M, Ramakrishnan V. Factors affecting the physical stability of peptide self-assembly in neurodegenerative disorders. Neuropeptides 2025; 111:102517. [PMID: 40112745 DOI: 10.1016/j.npep.2025.102517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2024] [Revised: 03/07/2025] [Accepted: 03/07/2025] [Indexed: 03/22/2025]
Abstract
Biological systems comprise of diverse biomolecules, including proteins, nucleic acids, lipids, and carbohydrates. Peptides, which are short chains of amino acids, exhibit unique properties when assembled to nano-level architectures. Self-assembling peptides possess a remarkable ability to organize into structured aggregates such as nanofibers, nanotubes, nanoribbons, and nanovesicles. These intricate structures are linked to neurodegenerative diseases, including Alzheimer's disease, Parkinson's disease, Prion disease, Huntington's disease, and type II diabetes. Peptide nano assembly can be guided by external stimuli, such as temperature, pH, ultrasound, electric and magnetic fields. In this review, the discussion will be centred around the various factors that influence the self-assembly of peptides alongside therapeutic interventions that align with the fundamental principles of thermodynamics and kinetics to modulate the aggregation characteristics of peptide self-assembly.
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Affiliation(s)
- Jahnu Saikia
- Department of Biosciences & Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Mouli Sarkar
- Department of Biosciences & Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Vibin Ramakrishnan
- Department of Biosciences & Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, India; Mehta Family School of Data Science & Artificial Intelligence, Indian Institute of Technology Guwahati, Guwahati 781039, India.
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3
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Wang J, Li Z, Zhang W. Impacts of External Electric Fields on Structures and Alignments of Ring Molecules. J Phys Chem B 2025; 129:2746-2760. [PMID: 40012085 DOI: 10.1021/acs.jpcb.4c06923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2025]
Abstract
Ring molecules, which lack free ends, exhibit unique chemical and physical properties, making them promising candidates for nanodevice applications. Unlike their linear counterparts with two free ends, the behavior of ring molecules in water under external electric fields (EF) is not well understood. In this research, we employ molecular dynamics (MD) simulations to explore the structural and alignment behavior of two ring molecules of different sizes─C30H60 and C60H120─in water, under 300 K, 1 bar and various EF conditions, including direct current EF (DC EF), alternating current EF (AC EF), and circular polarized EF (CP EF) at different frequencies. Our findings reveal the following: (1) both large and small rings exhibit two free energy minima. For C60H120, these correspond to collapsed and stretched configurations, while for C30H60, they represent open and closed configurations. (2) The applied EF can regulate the depth of these free energy minima. For C60H120, no EF, AC EF, and high-frequency CP EF favor the collapsed state, while DC EF and low-frequency CP EF promote the stretched configuration. In the case of C30H60, no EF and high-frequency CP EF favor the open-ring state, whereas all other EF conditions tend to close the ring. (3) Both ring molecules align with the directional EF to minimize disruption of the hydrogen-bond network, with C60H120 showing a stronger alignment effect than C30H60 due to its longer structure. (4) Under CP EF, ring molecules exhibit rotation driven by the rotating EF, but there is a lag in the angle between the EF vector and the molecule's elongation. Higher frequency CP EF shows less ability to capture and align the molecule. This research enhances our understanding of how ring molecules behave in water under external EF and provides a theoretical foundation for future engineering applications involving controlled manipulation of these molecules.
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Affiliation(s)
- Jiang Wang
- College of Science, Guizhou Institute of Technology, Boshi Road, Dangwu Town, Gui'an New District, Guizhou 550025, China
| | - Zhiling Li
- College of Science, Guizhou Institute of Technology, Boshi Road, Dangwu Town, Gui'an New District, Guizhou 550025, China
| | - Wenli Zhang
- School of Transportation Engineering, Guizhou Institute of Technology, Boshi Road, Dangwu Town, Gui'an New District, Guizhou 550025, China
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4
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Zhang A, Lu Z, Roohani I, Liu B, Jarvis KL, Tan R, Wise SG, Bilek MMM, Mirkhalaf M, Akhavan B, Zreiqat H. Bioinstructive 3D-Printed Magnesium-Baghdadite Bioceramic Scaffolds for Bone Tissue Engineering. ACS APPLIED MATERIALS & INTERFACES 2025; 17:15220-15236. [PMID: 40013831 DOI: 10.1021/acsami.5c01271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/28/2025]
Abstract
Current synthetic bioceramic scaffolds often lack bioinstructive ability for effective bone regeneration. We have selected magnesium-doped baghdadite (Mg-BAG) scaffolds, known for their promising osteoinductive and mechanical properties, as the base material and fabricated them using a liquid crystal display 3D printing technique. Building on this foundation, we have advanced the application of ion-assisted plasma polymerization (IAPP) technology, adapted for 3D structures, to develop homogeneous bioinstructive interfaces on these scaffolds for enhanced osteoinductive properties. The IAPP coatings formed under energetic ion bombardment maintained a strong attachment to the Mg-BAG scaffolds after 1 month of incubation at 37 °C in cell culture media. We provided evidence that such robustness of the interfaces is regulated by the coating's growth mechanism on a nanoscale, transitioning from initial island formation to a stable, smooth structure. The coatings enhanced the release of silicon ions from the scaffolds and significantly slowed the release of bone morphogenetic protein 2 (BMP2) over a period of 45 days. In the presence of lower soluble BMP2 concentrations, the biofunctionalized scaffolds demonstrated superior biocompatibility and osteoinductivity compared to those with physisorbed BMP2, as evidenced by sustained cell proliferation and elevated levels of osteogenic gene expression observed in human osteoblast-like cells (HOBs). This research highlights a key evolution of IAPP from traditional 2D substrates to more complex 3D structures and the excellent potential of IAPP bioceramic scaffolds as a next generation of cell-free constructs for bone regeneration applications and beyond.
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Affiliation(s)
- Anyu Zhang
- School of Biomedical Engineering, Tissue Engineering and Biomaterials Research Unit, Faculty of Engineering University of Sydney, Sydney, New South Wales 2006, Australia
- School of Physics, University of Sydney, Sydney, New South Wales 2006, Australia
- Sydney Nano Institute, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Zufu Lu
- School of Biomedical Engineering, Tissue Engineering and Biomaterials Research Unit, Faculty of Engineering University of Sydney, Sydney, New South Wales 2006, Australia
| | - Iman Roohani
- School of Biomedical Engineering, Tissue Engineering and Biomaterials Research Unit, Faculty of Engineering University of Sydney, Sydney, New South Wales 2006, Australia
- School of Biomedical Engineering, Faculty of IT and Engineering, University of Technology Sydney, Sydney, New South Wales 2007, Australia
| | - Bingyan Liu
- School of Biomedical Engineering, Tissue Engineering and Biomaterials Research Unit, Faculty of Engineering University of Sydney, Sydney, New South Wales 2006, Australia
- School of Physics, University of Sydney, Sydney, New South Wales 2006, Australia
- Sydney Nano Institute, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Karyn L Jarvis
- ANFF-VIC Biointerface Engineering Hub, Swinburne University of Technology, Melbourne, Victoria 3122, Australia
| | - Richard Tan
- School of Medical Sciences, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Steven G Wise
- School of Medical Sciences, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Marcela M M Bilek
- School of Biomedical Engineering, Tissue Engineering and Biomaterials Research Unit, Faculty of Engineering University of Sydney, Sydney, New South Wales 2006, Australia
- School of Physics, University of Sydney, Sydney, New South Wales 2006, Australia
- Sydney Nano Institute, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Mohammad Mirkhalaf
- School of Mech., Medical & Process Engineering, Queensland University of Technology, Brisbane 4000, Australia
| | - Behnam Akhavan
- School of Biomedical Engineering, Tissue Engineering and Biomaterials Research Unit, Faculty of Engineering University of Sydney, Sydney, New South Wales 2006, Australia
- School of Physics, University of Sydney, Sydney, New South Wales 2006, Australia
- Sydney Nano Institute, University of Sydney, Sydney, New South Wales 2006, Australia
- School of Engineering, University of Newcastle, Callaghan, New South Wales 2308, Australia
- Hunter Medical Research Institute (HMRI), Precision Medicine Program, New Lambton Heights, New South Wales 2305, Australia
| | - Hala Zreiqat
- School of Biomedical Engineering, Tissue Engineering and Biomaterials Research Unit, Faculty of Engineering University of Sydney, Sydney, New South Wales 2006, Australia
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Rai S, Rai D. Probing the Electric Field Response of a Water Molecule Confined in Small Carbon Nanocages: A Density Functional Theory Investigation. Chemphyschem 2024; 25:e202400718. [PMID: 39287975 DOI: 10.1002/cphc.202400718] [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: 07/11/2024] [Revised: 09/16/2024] [Accepted: 09/16/2024] [Indexed: 09/19/2024]
Abstract
We consider a water molecule under tight confinement in the small-sized fullerenes (C28 ${_{28} }$ , C30 ${_{30} }$ , C32 ${_{32} }$ ) within the density functional theory (DFT) calculations with suitable exchange-correlation functionals. Such nanoscopic molecular cages provide an ideal setup to study their characteristic properties not present in the condensed phase. The water molecule entirely loses its feature of typical water when it is confined in small fullerenes of size equal to C30 ${_{30} }$ or smaller, in which the asymmetric O-H stretching vibration occurs at a lower wavenumber than the symmetric stretching. We study the response of the confined water molecule to the applied electric fields in terms of change in geometrical parameters, NMR spin-spin coupling constants, dipole moment, HOMO-LUMO (HL) gap, and vibrational frequency shift. The electric field shielding property of small-sized fullerene cages is explored and found to be strongly correlated with the HL gap. Since the electric field modulates the gap to decrease generally, shielding efficiency varies with field strength, thereby making large fields better shielded than small fields for the small penetration factor at large fields. The results that hold significance for technological applications are discussed.
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Affiliation(s)
- Smita Rai
- Department of Physics, Sikkim University, Samdur, India, 737102
| | - Dhurba Rai
- Department of Physics, Sikkim University, Samdur, India, 737102
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6
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Brilian AI, Lee SH, Setiawati A, Kim CH, Ryu SR, Chong HJ, Jo Y, Jeong H, Ju BG, Kwon OS, Tae G, Shin K. Topical Nanoliposomal Collagen Delivery for Targeted Fibril Formation by Electrical Stimulation. Adv Healthc Mater 2024; 13:e2400693. [PMID: 38795005 DOI: 10.1002/adhm.202400693] [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: 04/09/2024] [Revised: 05/14/2024] [Indexed: 05/27/2024]
Abstract
Collagen is a complex, large protein molecule that presents a challenge in delivering it to the skin due to its size and intricate structure. However, conventional collagen delivery methods are either invasive or may affect the protein's structural integrity. This study introduces a novel approach involving the encapsulation of collagen monomers within zwitterionic nanoliposomes, termed Lip-Cols, and the controlled formation of collagen fibrils through electric fields (EF) stimulation. The results reveal the self-assembly process of Lip-Cols through electroporation and a pH gradient change uniquely triggered by EF, leading to the alignment and aggregation of Lip-Cols on the electrode interface. Notably, Lip-Cols exhibit the capability to direct the orientation of collagen fibrils within human dermal fibroblasts. In conjunction with EF, Lip-Cols can deliver collagen into the dermal layer and increase the collagen amount in the skin. The findings provide novel insights into the directed formation of collagen fibrils via electrical stimulation and the potential of Lip-Cols as a non-invasive drug delivery system for anti-aging applications.
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Affiliation(s)
- Albertus Ivan Brilian
- Department of Chemistry and Institute of Biological Interfaces, Sogang University, 35 Baekbeom-ro, Mapo-gu, Seoul, 04107, Republic of Korea
| | - Sang Ho Lee
- Department of Chemistry and Institute of Biological Interfaces, Sogang University, 35 Baekbeom-ro, Mapo-gu, Seoul, 04107, Republic of Korea
| | - Agustina Setiawati
- Department of Chemistry and Institute of Biological Interfaces, Sogang University, 35 Baekbeom-ro, Mapo-gu, Seoul, 04107, Republic of Korea
- Faculty of Pharmacy, Sanata Dharma University, Paingan, Maguwoharjo, Depok, Sleman, Yogyakarta, 55284, Indonesia
| | - Chang Ho Kim
- Department of Chemistry and Institute of Biological Interfaces, Sogang University, 35 Baekbeom-ro, Mapo-gu, Seoul, 04107, Republic of Korea
| | - Soo Ryeon Ryu
- Department of Chemistry and Institute of Biological Interfaces, Sogang University, 35 Baekbeom-ro, Mapo-gu, Seoul, 04107, Republic of Korea
| | - Hyo-Jin Chong
- Department of Life Science, Sogang University, 35 Baekbeom-ro, Mapo-gu, Seoul, 04107, Republic of Korea
| | - Yejin Jo
- Department of Life Science, Sogang University, 35 Baekbeom-ro, Mapo-gu, Seoul, 04107, Republic of Korea
| | - Hayan Jeong
- Department of Life Science, Sogang University, 35 Baekbeom-ro, Mapo-gu, Seoul, 04107, Republic of Korea
| | - Bong-Gun Ju
- Department of Life Science, Sogang University, 35 Baekbeom-ro, Mapo-gu, Seoul, 04107, Republic of Korea
| | - Oh-Sun Kwon
- Department of Chemistry and Institute of Biological Interfaces, Sogang University, 35 Baekbeom-ro, Mapo-gu, Seoul, 04107, Republic of Korea
| | - Giyoong Tae
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju, 61005, Republic of Korea
| | - Kwanwoo Shin
- Department of Chemistry and Institute of Biological Interfaces, Sogang University, 35 Baekbeom-ro, Mapo-gu, Seoul, 04107, Republic of Korea
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7
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Ford EM, Hilderbrand AM, Kloxin AM. Harnessing multifunctional collagen mimetic peptides to create bioinspired stimuli responsive hydrogels for controlled cell culture. J Mater Chem B 2024; 12:9600-9621. [PMID: 39211975 PMCID: PMC11362912 DOI: 10.1039/d4tb00562g] [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: 03/17/2024] [Accepted: 08/12/2024] [Indexed: 09/04/2024]
Abstract
The demand for synthetic soft materials with bioinspired structures continues to grow. Material applications range from in vitro and in vivo tissue mimics to therapeutic delivery systems, where well-defined synthetic building blocks offer precise and reproducible property control. This work examines a synthetic assembling peptide, specifically a multifunctional collagen mimetic peptide (mfCMP) either alone or with reactive macromers, for the creation of responsive hydrogels that capture aspects of soft collagen-rich tissues. We first explored how buffer choice impacts mfCMP hierarchical assembly, in particular, peptide melting temperature, fibril morphology, and ability to form physical hydrogels. Assembly in physiologically relevant buffer resulted in collagen-like fibrillar structures and physically assembled hydrogels with shear-thinning (as indicated through strain-yielding) and self-healing properties. Further, we aimed to create fully synthetic, composite peptide-polymer hydrogels with dynamic responses to various stimuli, inspired by the extracellular matrix (ECM). Specifically, we established mfCMP-poly(ethylene glycol) (PEG) hydrogel compositions that demonstrate increasing non-linear viscoelasticity in response to applied strain as the amount of assembled mfCMP content increases. Furthermore, the thermal responsiveness of mfCMP physical crosslinks was harnessed to manipulate the composite hydrogel mechanical properties in response to changes in temperature. Finally, cells relevant in wound healing, human lung fibroblasts, were encapsulated within these peptide-polymer hydrogels to explore the impact of increased mfCMP, and the resulting changes in viscoelasticity, on cell response. This work establishes mfCMP building blocks as versatile tools for creating hybrid and adaptable systems with applications ranging from injectable shear-thinning materials to responsive interfaces and synthetic ECMs for tissue engineering.
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Affiliation(s)
- Eden M Ford
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA.
| | - Amber M Hilderbrand
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA.
| | - April M Kloxin
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA.
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA
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8
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Wang J, Li Z. Electric field modulated configuration and orientation of aqueous molecule chains. J Chem Phys 2024; 161:094305. [PMID: 39230558 DOI: 10.1063/5.0222122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Accepted: 08/22/2024] [Indexed: 09/05/2024] Open
Abstract
Understanding how external electric fields (EFs) impact the properties of aqueous molecules is crucial for various applications in chemistry, biology, and engineering. In this paper, we present a study utilizing molecular dynamics simulation to explore how direct-current (DC) and alternative-current (AC) EFs affect hydrophobic (n-triacontane) and hydrophilic (PEG-10) oligomer chains. Through a machine learning approach, we extract a 2-dimensional free energy (FE) landscape of these molecules, revealing that electric fields modulate the FE landscape to favor stretched configurations and enhance the alignment of the chain with the electric field. Our observations indicate that DC EFs have a more prominent impact on modulation compared to AC EFs and that EFs have a stronger effect on hydrophobic chains than on hydrophilic oligomers. We analyze the orientation of water dipole moments and hydrogen bonds, finding that EFs align water molecules and induce more directional hydrogen bond networks, forming 1D water structures. This favors the stretched configuration and alignment of the studied oligomers simultaneously, as it minimizes the disruption of 1D structures. This research deepens our understanding of the mechanisms by which electric fields modulate molecular properties and could guide the broader application of EFs to control other aqueous molecules, such as proteins or biomolecules.
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Affiliation(s)
- Jiang Wang
- College of Science, Guizhou Institute of Technology, Boshi Road, Dangwu Town, Gui'an New District, Guizhou 550025, China
| | - Zhiling Li
- College of Science, Guizhou Institute of Technology, Boshi Road, Dangwu Town, Gui'an New District, Guizhou 550025, China
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9
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Che Z, Sun Q, Zhao Z, Wu Y, Xing H, Song K, Chen A, Wang B, Cai M. Growth factor-functionalized titanium implants for enhanced bone regeneration: A review. Int J Biol Macromol 2024; 274:133153. [PMID: 38897500 DOI: 10.1016/j.ijbiomac.2024.133153] [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: 02/26/2024] [Revised: 06/02/2024] [Accepted: 06/12/2024] [Indexed: 06/21/2024]
Abstract
Titanium and titanium alloys are widely favored materials for orthopedic implants due to their exceptional mechanical properties and biological inertness. The additional benefit of sustained local release of bioactive substances further promotes bone tissue formation, thereby augmenting the osseointegration capacity of titanium implants and attracting increasing attention in bone tissue engineering. Among these bioactive substances, growth factors have shown remarkable osteogenic and angiogenic induction capabilities. Consequently, researchers have developed various physical, chemical, and biological loading techniques to incorporate growth factors into titanium implants, ensuring controlled release kinetics. In contrast to conventional treatment modalities, the localized release of growth factors from functionalized titanium implants not only enhances osseointegration but also reduces the risk of complications. This review provides a comprehensive examination of the types and mechanisms of growth factors, along with a detailed exploration of the methodologies used to load growth factors onto the surface of titanium implants. Moreover, it highlights recent advancements in the application of growth factors to the surface of titanium implants (Scheme 1). Finally, the review discusses current limitations and future prospects for growth factor-functionalized titanium implants. In summary, this paper presents cutting-edge design strategies aimed at enhancing the bone regenerative capacity of growth factor-functionalized titanium implants-a significant advancement in the field of enhanced bone regeneration.
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Affiliation(s)
- Zhenjia Che
- Department of Orthopaedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai 200072, People's Republic of China.
| | - Qi Sun
- Department of Orthopaedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai 200072, People's Republic of China
| | - Zhenyu Zhao
- Department of Orthopaedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai 200072, People's Republic of China
| | - Yanglin Wu
- Department of Orthopaedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai 200072, People's Republic of China
| | - Hu Xing
- Department of Orthopaedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai 200072, People's Republic of China
| | - Kaihang Song
- Department of Orthopaedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai 200072, People's Republic of China
| | - Aopan Chen
- Department of Orthopaedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai 200072, People's Republic of China
| | - Bo Wang
- Department of Orthopaedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai 200072, People's Republic of China.
| | - Ming Cai
- Department of Orthopaedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai 200072, People's Republic of China.
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10
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Haidar LL, Bilek M, Akhavan B. Surface Bio-engineered Polymeric Nanoparticles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2310876. [PMID: 38396265 DOI: 10.1002/smll.202310876] [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: 11/24/2023] [Revised: 02/05/2024] [Indexed: 02/25/2024]
Abstract
Surface bio-engineering of polymeric nanoparticles (PNPs) has emerged as a cornerstone in contemporary biomedical research, presenting a transformative avenue that can revolutionize diagnostics, therapies, and drug delivery systems. The approach involves integrating bioactive elements on the surfaces of PNPs, aiming to provide them with functionalities to enable precise, targeted, and favorable interactions with biological components within cellular environments. However, the full potential of surface bio-engineered PNPs in biomedicine is hampered by obstacles, including precise control over surface modifications, stability in biological environments, and lasting targeted interactions with cells or tissues. Concerns like scalability, reproducibility, and long-term safety also impede translation to clinical practice. In this review, these challenges in the context of recent breakthroughs in developing surface-biofunctionalized PNPs for various applications, from biosensing and bioimaging to targeted delivery of therapeutics are discussed. Particular attention is given to bonding mechanisms that underlie the attachment of bioactive moieties to PNP surfaces. The stability and efficacy of surface-bioengineered PNPs are critically reviewed in disease detection, diagnostics, and treatment, both in vitro and in vivo settings. Insights into existing challenges and limitations impeding progress are provided, and a forward-looking discussion on the field's future is presented. The paper concludes with recommendations to accelerate the clinical translation of surface bio-engineered PNPs.
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Affiliation(s)
- Laura Libnan Haidar
- School of Physics, University of Sydney, Sydney, NSW, 2006, Australia
- The University of Sydney Nano Institute, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Marcela Bilek
- School of Physics, University of Sydney, Sydney, NSW, 2006, Australia
- The University of Sydney Nano Institute, The University of Sydney, Sydney, NSW, 2006, Australia
- School of Biomedical Engineering, University of Sydney, Sydney, NSW, 2006, Australia
- Charles Perkins Centre, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Behnam Akhavan
- School of Physics, University of Sydney, Sydney, NSW, 2006, Australia
- The University of Sydney Nano Institute, The University of Sydney, Sydney, NSW, 2006, Australia
- School of Biomedical Engineering, University of Sydney, Sydney, NSW, 2006, Australia
- School of Engineering, University of Newcastle, Callaghan, NSW, 2308, Australia
- Hunter Medical Research Institute (HMRI), Precision Medicine Program, New Lambton Heights, NSW, 2305, Australia
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11
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Tada K, Kitagawa Y. Issues on DFT+ U calculations of organic diradicals. Phys Chem Chem Phys 2023; 25:32110-32122. [PMID: 37983012 DOI: 10.1039/d3cp04187e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2023]
Abstract
The diradical state is an important electronic state for understanding molecular functions and should be elucidated for the in silico design of functional molecules and their application to molecular devices. The density functional theory calculation with plane-wave basis and correction of the on-site Coulomb parameter U (DFT+U/plane-wave calculation) is a good candidate of high-throughput calculations of diradical-band interactions. However, it has not been investigated in detail to what extent the DFT+U/plane-wave calculation can be used to calculate organic diradicals with a high degree of accuracy. In the present study, using typical organic diradical molecules (bisphenalenyl molecules) as model systems, the discrepancy in the optimum U values between the two electronic states (open-shell singlet and triplet) that compose the diradical state is detected. The calculated results show that the reason for this U value discrepancy is the difference in electronic delocalisation due to π-conjugation between the open-shell singlet and triplet states, and that the effect of U discrepancy becomes large as diradical character decreases. This indicates that it is necessary to investigate the U value discrepancy with reference to the calculated results by more accurate methods or to experimental values when calculating organic diradicals with low diradical character. For this investigation, the local magnetic moments, unpaired beta electron numbers, and effective magnetic exchange integral values can be used as reference values. For the effective magnetic exchange integral values, the effects of U discrepancy are partially cancelled out. However, because the effects may not be completely offset, care should be taken when using the effective magnetic exchange integral value as a reference. Furthermore, a comparison of DFT+U and hybrid-DFT calculations shows that the DFT+U underestimates the HOMO-LUMO gap of bisphenalenyls, although a qualitative discussion of the gap is possible.
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Affiliation(s)
- Kohei Tada
- Research Institute of Electrochemical Energy, Department of Energy and Environment (RIECEN), National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan.
| | - Yasutaka Kitagawa
- Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
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12
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Tada K, Kawakami T, Hinuma Y. Model calculations for the prediction of the diradical character of physisorbed molecules: p-benzyne/MgO and p-benzyne/SrO. Phys Chem Chem Phys 2023; 25:29424-29436. [PMID: 37795574 DOI: 10.1039/d3cp02988c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/06/2023]
Abstract
The analysis of the diradical state of functional open-shell molecules is important for understanding their physical properties and chemical reactivity. The diradical character is an important factor in the functional elucidation and design of open-shell molecules. In recent years, attempts have been made to immobilise functional open-shell molecules on surfaces to form devices. However, the influence of surface interactions on the diradical state remains unclear. In this study, the physisorption structures of p-benzyne, which is a typical diradical molecule, on MgO(001) and SrO(001) surfaces are used as models to investigate how the diradical character is affected by physisorption. This is done using approximate spin-projected density functional theory calculations with dispersion correction and plane-wave basis (AP-DFT-D3/plane-wave calculations). The diradical character change (Δy) due to adsorption can be categorised into three factors, namely the change due to the distortion of the diradical molecule (Δydis), the interaction between neighbouring diradical molecules (Δycoh), and molecule-surface interactions (Δysurf). In all the calculated models, physisorption reduced the diradical character (Δy < 0), and the contribution of Δysurf was the largest among the three factors. The calculated results show that adsorption induces electron delocalisation to π-conjugated orbitals and intramolecular charge polarisation, both of which contribute to reducing the occupancy of singly occupied molecular orbitals. This indicates that the diradical character of p-benzyne is reduced by the stabilisation of the resonance structures. Furthermore, geometry optimisation of the surfaces shows that the chemical-soft surface (SrO) varies the diradical character more significantly than the chemical-hard surface (MgO). This study shows that the open-shell electronic state and stack structure of diradical molecules can be controlled through the analysis of the surface diradical state.
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Affiliation(s)
- Kohei Tada
- Research Institute of Electrochemical Energy (RIECEN), Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan.
| | - Takashi Kawakami
- RIKEN Center for Computational Science, Kobe, Hyogo 650-0047, Japan
- Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Yoyo Hinuma
- Research Institute of Electrochemical Energy (RIECEN), Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan.
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13
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Vacek J, Zatloukalová M, Dorčák V, Cifra M, Futera Z, Ostatná V. Electrochemistry in sensing of molecular interactions of proteins and their behavior in an electric field. Mikrochim Acta 2023; 190:442. [PMID: 37847341 PMCID: PMC10582152 DOI: 10.1007/s00604-023-05999-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 09/12/2023] [Indexed: 10/18/2023]
Abstract
Electrochemical methods can be used not only for the sensitive analysis of proteins but also for deeper research into their structure, transport functions (transfer of electrons and protons), and sensing their interactions with soft and solid surfaces. Last but not least, electrochemical tools are useful for investigating the effect of an electric field on protein structure, the direct application of electrochemical methods for controlling protein function, or the micromanipulation of supramolecular protein structures. There are many experimental arrangements (modalities), from the classic configuration that works with an electrochemical cell to miniaturized electrochemical sensors and microchip platforms. The support of computational chemistry methods which appropriately complement the interpretation framework of experimental results is also important. This text describes recent directions in electrochemical methods for the determination of proteins and briefly summarizes available methodologies for the selective labeling of proteins using redox-active probes. Attention is also paid to the theoretical aspects of electron transport and the effect of an external electric field on the structure of selected proteins. Instead of providing a comprehensive overview, we aim to highlight areas of interest that have not been summarized recently, but, at the same time, represent current trends in the field.
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Affiliation(s)
- Jan Vacek
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacky University, Hnevotinska 3, 77515, Olomouc, Czech Republic.
| | - Martina Zatloukalová
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacky University, Hnevotinska 3, 77515, Olomouc, Czech Republic
| | - Vlastimil Dorčák
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacky University, Hnevotinska 3, 77515, Olomouc, Czech Republic
| | - Michal Cifra
- Institute of Photonics and Electronics of the Czech Academy of Sciences, Chaberska 1014/57, 18200, Prague, Czech Republic
| | - Zdeněk Futera
- Faculty of Science, University of South Bohemia, Branisovska 1760, 37005, Ceske Budejovice, Czech Republic
| | - Veronika Ostatná
- Institute of Biophysics, The Czech Academy of Sciences, v.v.i., Kralovopolska 135, 61200, Brno, Czech Republic
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14
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Zhang A, Wong JKU, Redzikultsava K, Baldry M, Alavi SK, Wang Z, van Koten E, Weiss A, Bilek M, Yeo GC, Akhavan B. A cost-effective and enhanced mesenchymal stem cell expansion platform with internal plasma-activated biofunctional interfaces. Mater Today Bio 2023; 22:100727. [PMID: 37529421 PMCID: PMC10388840 DOI: 10.1016/j.mtbio.2023.100727] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 06/30/2023] [Accepted: 07/07/2023] [Indexed: 08/03/2023] Open
Abstract
Mesenchymal stem cells (MSCs) used for clinical applications require in vitro expansion to achieve therapeutically relevant numbers. However, conventional planar cell expansion approaches using tissue culture vessels are inefficient, costly, and can trigger MSC phenotypic and functional decline. Here we present a one-step dry plasma process to modify the internal surfaces of three-dimensional (3D) printed, high surface area to volume ratio (high-SA:V) porous scaffolds as platforms for stem cell expansion. To address the long-lasting challenge of uniform plasma treatment within the micrometre-sized pores of scaffolds, we developed a packed bed plasma immersion ion implantation (PBPI3) technology by which plasma is ignited inside porous materials for homogeneous surface activation. COMSOL Multiphysics simulations support our experimental data and provide insights into the role of electrical field and pressure distribution in plasma ignition. Spatial surface characterisation inside scaffolds demonstrates the homogeneity of PBPI3 activation. The PBPI3 treatment induces radical-containing chemical structures that enable the covalent attachment of biomolecules via a simple, non-toxic, single-step incubation process. We showed that PBPI3-treated scaffolds biofunctionalised with fibroblast growth factor 2 (FGF2) significantly promoted the expansion of MSCs, preserved cell phenotypic expression, and multipotency, while reducing the usage of costly growth factor supplements. This breakthrough PBPI3 technology can be applied to a wide range of 3D polymeric porous scaffolds, paving the way towards developing new biomimetic interfaces for tissue engineering and regenerative medicine.
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Affiliation(s)
- Anyu Zhang
- School of Biomedical Engineering, University of Sydney, NSW 2006, Australia
- School of Physics, University of Sydney, NSW 2006, Australia
- Sydney Nano Institute, University of Sydney, NSW 2006, Australia
| | - Johnny Kuan Un Wong
- Charles Perkins Centre, University of Sydney, NSW 2006, Australia
- School of Life and Environmental Sciences, University of Sydney, NSW 2006, Australia
- Sydney Nano Institute, University of Sydney, NSW 2006, Australia
| | - Katazhyna Redzikultsava
- School of Biomedical Engineering, University of Sydney, NSW 2006, Australia
- School of Physics, University of Sydney, NSW 2006, Australia
| | - Mark Baldry
- School of Biomedical Engineering, University of Sydney, NSW 2006, Australia
- School of Physics, University of Sydney, NSW 2006, Australia
- Sydney Nano Institute, University of Sydney, NSW 2006, Australia
| | - Seyedeh Kh Alavi
- School of Biomedical Engineering, University of Sydney, NSW 2006, Australia
- School of Physics, University of Sydney, NSW 2006, Australia
| | - Ziyu Wang
- Charles Perkins Centre, University of Sydney, NSW 2006, Australia
- School of Life and Environmental Sciences, University of Sydney, NSW 2006, Australia
| | | | - Anthony Weiss
- Charles Perkins Centre, University of Sydney, NSW 2006, Australia
- School of Life and Environmental Sciences, University of Sydney, NSW 2006, Australia
| | - Marcela Bilek
- School of Biomedical Engineering, University of Sydney, NSW 2006, Australia
- School of Physics, University of Sydney, NSW 2006, Australia
- Charles Perkins Centre, University of Sydney, NSW 2006, Australia
- Sydney Nano Institute, University of Sydney, NSW 2006, Australia
| | - Giselle C Yeo
- Charles Perkins Centre, University of Sydney, NSW 2006, Australia
- School of Life and Environmental Sciences, University of Sydney, NSW 2006, Australia
| | - Behnam Akhavan
- School of Biomedical Engineering, University of Sydney, NSW 2006, Australia
- School of Physics, University of Sydney, NSW 2006, Australia
- Sydney Nano Institute, University of Sydney, NSW 2006, Australia
- School of Engineering, University of Newcastle, Callaghan, NSW 2308, Australia
- Hunter Medical Research Institute (HMRI), Precision Medicine Program, New Lambton Heights, NSW, 2305, Australia
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15
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Brown OR, Hullender DA. Biological evolution requires an emergent, self-organizing principle. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2023:S0079-6107(23)00058-5. [PMID: 37343790 DOI: 10.1016/j.pbiomolbio.2023.06.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 05/16/2023] [Accepted: 06/09/2023] [Indexed: 06/23/2023]
Abstract
In this perspective review, we assess fundamental flaws in Darwinian evolution, including its modern versions. Fixed mutations 'explain' microevolution but not macroevolution including speciation events and the origination of all the major body plans of the Cambrian explosion. Complex, multifactorial change is required for speciation events and inevitably requires self-organization beyond what is accomplished by known mechanisms. The assembly of ribosomes and ATP synthase are specific examples. We propose their origin is a model for what is unexplained in biological evolution. Probability of evolution is modeled in Section 9 and values are absurdly improbable. Speciation and higher taxonomic changes become exponentially less probable as the number of required, genetically-based events increase. Also, the power required of the proposed selection mechanism (survival of the fittest) is nil for any biological advance requiring multiple changes, because they regularly occur in multiple generations (different genomes) and would not be selectively conserved by the concept survival of the fittest (a concept ultimately centered on the individual). Thus, survival of the fittest cannot 'explain' the origin of the millions of current and extinct species. We also focus on the inadequacies of laboratory chemistry to explain the complex, required biological self-organization seen in cells. We propose that a 'bioelectromagnetic' field/principle emerges in living cells. Synthesis by self-organization of massive molecular complexes involves biochemical responses to this emergent field/principle. There are ramifications for philosophy, science, and religion. Physics and mathematics must be more strongly integrated with biology and integration should receive dedicated funding with special emphasis for medical applications; treatment of cancer and genetic diseases are examples.
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Affiliation(s)
- Olen R Brown
- Emeritus of Biomedical Sciences, at the University of Missouri, Columbia, MO, USA.
| | - David A Hullender
- Mechanical and Aerospace Engineering at the University of Texas at Arlington, USA
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16
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Dief EM, Low PJ, Díez-Pérez I, Darwish N. Advances in single-molecule junctions as tools for chemical and biochemical analysis. Nat Chem 2023; 15:600-614. [PMID: 37106094 DOI: 10.1038/s41557-023-01178-1] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 03/02/2023] [Indexed: 04/29/2023]
Abstract
The development of miniaturized electronics has led to the design and construction of powerful experimental platforms capable of measuring electronic properties to the level of single molecules, along with new theoretical concepts to aid in the interpretation of the data. A new area of activity is now emerging concerned with repurposing the tools of molecular electronics for applications in chemical and biological analysis. Single-molecule junction techniques, such as the scanning tunnelling microscope break junction and related single-molecule circuit approaches have a remarkable capacity to transduce chemical information from individual molecules, sampled in real time, to electrical signals. In this Review, we discuss single-molecule junction approaches as emerging analytical tools for the chemical and biological sciences. We demonstrate how these analytical techniques are being extended to systems capable of probing chemical reaction mechanisms. We also examine how molecular junctions enable the detection of RNA, DNA, and traces of proteins in solution with limits of detection at the zeptomole level.
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Affiliation(s)
- Essam M Dief
- School of Molecular and Life Sciences, Curtin University, Bentley, Western Australia, Australia
| | - Paul J Low
- School of Molecular Sciences, University of Western Australia, Crawley, Western Australia, Australia
| | - Ismael Díez-Pérez
- Department of Chemistry, Faculty of Natural & Mathematical Sciences, King's College London, London, UK
| | - Nadim Darwish
- School of Molecular and Life Sciences, Curtin University, Bentley, Western Australia, Australia.
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17
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Chakraborty A, Venkatramani R. Capturing the Polarization Response of Solvated Proteins under Constant Electric Fields in Molecular Dynamics Simulations. Chemphyschem 2023; 24:e202200646. [PMID: 36395205 DOI: 10.1002/cphc.202200646] [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: 08/27/2022] [Revised: 11/10/2022] [Indexed: 11/19/2022]
Abstract
We capture and compare the polarization response of a solvated globular protein ubiquitin to static electric (E-fields) using atomistic molecular dynamics simulations. We collectively follow E-field induced changes, electrical and structural, occurring across multiple trajectories using the magnitude of the protein dipole vector (Pp ). E-fields antiparallel to Pp induce faster structural changes and more facile protein unfolding relative to parallel fields of the same strength. While weak E-fields (0.1-0.5 V/nm) do not unfold ubiquitin and produce a reversible polarization, strong E-fields (1-2 V/nm) unfold the protein through a pathway wherein the helix:β-strand interactions rupture before those for the β1-β5 clamp. Independent of E-field direction, high E-field induced structural changes are also reversible if the field is switched off before Pp exceeds 2 times its equilibrium value. We critically examine the dependence of water properties, protein rotational diffusion and E-field induced protein unfolding pathways on the thermostat/barostat parameters used in our simulations.
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Affiliation(s)
- Anustup Chakraborty
- Department of Chemical Sciences, Tata Institute of Fundamental Research, Dr. Homi Bhabha Road, Colaba, Mumbai 400005, Maharashtra, India
| | - Ravindra Venkatramani
- Department of Chemical Sciences, Tata Institute of Fundamental Research, Dr. Homi Bhabha Road, Colaba, Mumbai 400005, Maharashtra, India
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18
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Xue Y, Zhang Z, Wang G, Wan S, Li Q, Zhao X. Protein superglue inspired in-situ one-step site-specific immobilization of beta2-adrenoceptor and its application in bioactive compound screening from Cortex Magnoliae Officinalis. J Chromatogr A 2023; 1690:463780. [PMID: 36638688 DOI: 10.1016/j.chroma.2023.463780] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 12/21/2022] [Accepted: 01/05/2023] [Indexed: 01/09/2023]
Abstract
The platforms based on immobilization of transmembrane proteins have become an effective way to study drug-protein interaction and identify new leads for drug discovery. Herein, we exploited the protein superglue (i.e. SpyTag-SpyCatcher chemistry) for site-specific, oriented, and in-situ one-step beta2-adrenoceptor (β2-AR) immobilization. SpyCatcher was used as a fusion tag at the C-terminal of β2-AR and the macroporous silica gels were functionalized with the SpyTag peptide. Immobilization was realized by immersing the gels into the E.coli cell lysate containing β2-AR-SpyCatcher. Characterization of the functionalized gels was performed by X-ray photoelectron spectroscopy and fluorescence microscopy. Adsorption energy distribution calculation, injection amount dependent analysis (IADA) and nonlinear chromatographic were used for receptor-ligand interaction analysis. The affinity rank order of four ligands to the receptor was tulobuterol> chlorprenaline> salbutamol> terbutaline, which showed highly consistent with data from the radioligand binding assay and the β2-AR column prepared by HaloTag technology. Magnolol and honokiol were screened from Cortex Magnoliae Officinalis and proved to promote the expression of the receptor in human airway smooth muscle cells. Our work unraveled the great potential to generate good bioactivity of the immobilized β2-AR through Spy toolbox. This technology can be extended to the immobilization of other functional proteins, providing a better alternative in the field of bioanalysis, biosensing, and separation science.
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Affiliation(s)
- Yan Xue
- College of Life Science, Northwest University, Xi'an, Shaanxi 710069, China
| | - Zilong Zhang
- College of Life Science, Northwest University, Xi'an, Shaanxi 710069, China
| | - Ge Wang
- College of Life Science, Northwest University, Xi'an, Shaanxi 710069, China
| | - Shuangru Wan
- College of Life Science, Northwest University, Xi'an, Shaanxi 710069, China
| | - Qian Li
- College of Life Science, Northwest University, Xi'an, Shaanxi 710069, China.
| | - Xinfeng Zhao
- College of Life Science, Northwest University, Xi'an, Shaanxi 710069, China
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19
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Dong T, Matos Pires NM, Yang Z, Jiang Z. Advances in Electrochemical Biosensors Based on Nanomaterials for Protein Biomarker Detection in Saliva. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2205429. [PMID: 36585368 PMCID: PMC9951322 DOI: 10.1002/advs.202205429] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/20/2022] [Indexed: 06/02/2023]
Abstract
The focus on precise medicine enhances the need for timely diagnosis and frequent monitoring of chronic diseases. Moreover, the recent pandemic of severe acute respiratory syndrome coronavirus 2 poses a great demand for rapid detection and surveillance of viral infections. The detection of protein biomarkers and antigens in the saliva allows rapid identification of diseases or disease changes in scenarios where and when the test response at the point of care is mandated. While traditional methods of protein testing fail to provide the desired fast results, electrochemical biosensors based on nanomaterials hold perfect characteristics for the detection of biomarkers in point-of-care settings. The recent advances in electrochemical sensors for salivary protein detection are critically reviewed in this work, with emphasis on the role of nanomaterials to boost the biosensor analytical performance and increase the reliability of the test in human saliva samples. Furthermore, this work identifies the critical factors for further modernization of the nanomaterial-based electrochemical sensors, envisaging the development and implementation of next-generation sample-in-answer-out systems.
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Affiliation(s)
- Tao Dong
- Department of Microsystems‐ IMSFaculty of TechnologyNatural Sciences and Maritime SciencesUniversity of South‐Eastern Norway‐USNP.O. Box 235Kongsberg3603Norway
| | - Nuno Miguel Matos Pires
- Chongqing Key Laboratory of Micro‐Nano Systems and Intelligent TransductionCollaborative Innovation Center on Micro‐Nano Transduction and Intelligent Eco‐Internet of ThingsChongqing Key Laboratory of Colleges and Universities on Micro‐Nano Systems Technology and Smart TransducingNational Research Base of Intelligent Manufacturing ServiceChongqing Technology and Business UniversityNan'an DistrictChongqing400067China
| | - Zhaochu Yang
- Chongqing Key Laboratory of Micro‐Nano Systems and Intelligent TransductionCollaborative Innovation Center on Micro‐Nano Transduction and Intelligent Eco‐Internet of ThingsChongqing Key Laboratory of Colleges and Universities on Micro‐Nano Systems Technology and Smart TransducingNational Research Base of Intelligent Manufacturing ServiceChongqing Technology and Business UniversityNan'an DistrictChongqing400067China
| | - Zhuangde Jiang
- Chongqing Key Laboratory of Micro‐Nano Systems and Intelligent TransductionCollaborative Innovation Center on Micro‐Nano Transduction and Intelligent Eco‐Internet of ThingsChongqing Key Laboratory of Colleges and Universities on Micro‐Nano Systems Technology and Smart TransducingNational Research Base of Intelligent Manufacturing ServiceChongqing Technology and Business UniversityNan'an DistrictChongqing400067China
- State Key Laboratory for Manufacturing Systems EngineeringInternational Joint Laboratory for Micro/Nano Manufacturing and Measurement TechnologyXi'an Jiaotong UniversityXi'an710049China
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20
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Pramounmat N, Asaei S, Hostert JD, Young K, von Recum HA, Renner JN. Grafting of short elastin-like peptides using an electric field. Sci Rep 2022; 12:18682. [PMID: 36333395 PMCID: PMC9636273 DOI: 10.1038/s41598-022-21672-9] [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: 06/30/2022] [Accepted: 09/29/2022] [Indexed: 11/06/2022] Open
Abstract
Surface-grafted elastin has found a wide range of uses such as sensing, tissue engineering and capture/release applications because of its ability to undergo stimuli-responsive phase transition. While various methods exist to control surface grafting in general, it is still difficult to control orientation as attachment occurs. This study investigates using an electric field as a new approach to control the surface-grafting of short elastin-like polypeptide (ELP). Characterization of ELP grafting to gold via quartz crystal microbalance with dissipation, atomic force microscopy and temperature ramping experiments revealed that the charge/hydrophobicity of the peptides, rearrangement kinetics and an applied electric field impacted the grafted morphology of ELP. Specifically, an ELP with a negative charge on the opposite end of the surface-binding moiety assembled in a more upright orientation, and a sufficient electric field pushed the charge away from the surface compared to when the same peptide was assembled in no electric field. In addition, this study demonstrated that assembling charged ELP in an applied electric field impacts transition behavior. Overall, this study reveals new strategies for achieving desirable and predictable surface properties of surface-bound ELP.
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Affiliation(s)
- Nuttanit Pramounmat
- grid.67105.350000 0001 2164 3847Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, USA
| | - Sogol Asaei
- grid.67105.350000 0001 2164 3847Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, USA
| | - Jacob D. Hostert
- grid.67105.350000 0001 2164 3847Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, USA
| | | | - Horst A. von Recum
- grid.67105.350000 0001 2164 3847Department of Biomedical Engineering, Case Western Reserve University, Cleveland, USA
| | - Julie N. Renner
- grid.67105.350000 0001 2164 3847Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, USA
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21
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Henriksson A, Neubauer P, Birkholz M. Dielectrophoresis: An Approach to Increase Sensitivity, Reduce Response Time and to Suppress Nonspecific Binding in Biosensors? BIOSENSORS 2022; 12:784. [PMID: 36290922 PMCID: PMC9599301 DOI: 10.3390/bios12100784] [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: 08/17/2022] [Revised: 09/12/2022] [Accepted: 09/20/2022] [Indexed: 11/25/2022]
Abstract
The performance of receptor-based biosensors is often limited by either diffusion of the analyte causing unreasonable long assay times or a lack of specificity limiting the sensitivity due to the noise of nonspecific binding. Alternating current (AC) electrokinetics and its effect on biosensing is an increasing field of research dedicated to address this issue and can improve mass transfer of the analyte by electrothermal effects, electroosmosis, or dielectrophoresis (DEP). Accordingly, several works have shown improved sensitivity and lowered assay times by order of magnitude thanks to the improved mass transfer with these techniques. To realize high sensitivity in real samples with realistic sample matrix avoiding nonspecific binding is critical and the improved mass transfer should ideally be specific to the target analyte. In this paper we cover recent approaches to combine biosensors with DEP, which is the AC kinetic approach with the highest selectivity. We conclude that while associated with many challenges, for several applications the approach could be beneficial, especially if more work is dedicated to minimizing nonspecific bindings, for which DEP offers interesting perspectives.
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Affiliation(s)
- Anders Henriksson
- Chair of Bioprocess Engineering, Department of Biotechnology, Technische Universität Berlin, Ackerstraße 76, 13355 Berlin, Germany
| | - Peter Neubauer
- Chair of Bioprocess Engineering, Department of Biotechnology, Technische Universität Berlin, Ackerstraße 76, 13355 Berlin, Germany
| | - Mario Birkholz
- IHP—Leibniz-Institut für Innovative Mikroelektronik, Im Technologiepark 25, 15236 Frankfurt (Oder), Germany
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22
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Kim HJ, Park D, Park Y, Kim DH, Kim J. Electric-Field-Mediated In-Sensor Alignment of Antibody's Orientation to Enhance the Antibody-Antigen Binding for Ultrahigh Sensitivity Sensors. NANO LETTERS 2022; 22:6537-6544. [PMID: 35900218 DOI: 10.1021/acs.nanolett.2c01584] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Applying an electric-field (E-field) during antibody immobilization aligns the orientation of the antibody on the biosensor surface, thereby enhancing the binding probability between the antibody and antigen and maximizing the sensitivity of the biosensor. In this study, a biosensor with enhanced antibody-antigen binding probability was developed using the alignment of polar antibodies (immunoglobulin G [IgG]) under an E-field applied inside the interdigitated electrodes. The optimal alignment condition was first theoretically calculated and then experimentally confirmed by comparing the impedance change before and after the alignment of IgG (a purified anti-β-amyloid antibody). With the optimized condition, the impedance change of the biosensor was maximized because of the alignment of IgG orientation on the sensor surface; the detection sensitivity of the antigen amyloid-beta 1-42 was also maximized. The E-field-based in-sensor alignment of antibodies is an easy and effective method for enhancing biosensor sensitivity.
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Affiliation(s)
- Hye Jin Kim
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- Institute of Chemical Processes (ICP), Seoul National University, Seoul 08826, Republic of Korea
| | - Dongsung Park
- Department of Clinical Pharmacology and Therapeutics, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Yejin Park
- Department of Medical Biotechnology, College of Life Science and Biotechnology, Dongguk University, Seoul 04620, Republic of Korea
| | - Dae-Hyeong Kim
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Jinsik Kim
- Department of Medical Biotechnology, College of Life Science and Biotechnology, Dongguk University, Seoul 04620, Republic of Korea
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23
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Urzúa SA, Sauceda-Oloño PY, García CD, Cooper CD. Predicting the Orientation of Adsorbed Proteins Steered with Electric Fields Using a Simple Electrostatic Model. J Phys Chem B 2022; 126:5231-5240. [PMID: 35819287 DOI: 10.1021/acs.jpcb.2c03118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Under the most common experimental conditions, the adsorption of proteins to solid surfaces is a spontaneous process that leads to a rather compact layer of randomly oriented molecules. However, controlling such orientation is critically important for the development of catalytic surfaces. In this regard, the use of electric fields is one of the most promising alternatives. Our work is motivated by experimental observations that show important differences in catalytic activity of a trypsin-covered surface, which depended on the applied potential during the adsorption. Even though adsorption results from the combination of several processes, we were able to determine that (under the selected conditions) mean-field electrostatics play a dominant role, determining the orientation and yielding a difference in catalytic activity. We simulated the electrostatic potential numerically, using an implicit-solvent model based on the linearized Poisson-Boltzmann equation. This was implemented in an extension of the code PyGBe that included an external electric field, and rendered the electrostatic component of the solvation free energy. Our model (extensions available at the Github repository) allowed estimating the overall affinity of the protein with the surface, and their most likely orientation as a function of the potential applied. Our results show that the active sites of trypsin are, on average, more exposed when the electric field is negative, which agrees with the experimental results of catalytic activity, and confirm the premise that electrostatic interactions can be used to control the orientation of adsorbed proteins.
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Affiliation(s)
- Sergio A Urzúa
- Department of Mechanical Engineering, Universidad Técnica Federico Santa María, Valparaíso, 2390123, Chile
| | - Perla Y Sauceda-Oloño
- Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
| | - Carlos D García
- Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
| | - Christopher D Cooper
- Department of Mechanical Engineering, Universidad Técnica Federico Santa María, Valparaíso, 2390123, Chile.,Centro Científico Tecnológico de Valparaíso, Valparaíso, 2390123, Chile
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24
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Pandey P, Bhattarai N, Su L, Wang X, Leng F, Gerst-man B, Chapagain PP, He J. Detecting Individual Proteins and Their Surface Charge Variations in Solution by the Potentiometric Nanoimpact Method. ACS Sens 2022; 7:555-563. [PMID: 35060380 PMCID: PMC10631516 DOI: 10.1021/acssensors.1c02385] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Label-free detection and analysis of proteins in their natural form and their dynamic interactions with substrates at the single-molecule level are important for both fundamental studies and various applications. Herein, we demonstrate a simple potentiometric method to achieve this goal by detecting the native charge of protein in solution by utilizing the principle of single-entity electrochemistry techniques. When a charged protein moves near the vicinity of a floating carbon nanoelectrode connected to a high-impedance voltage meter, the distinct local electrostatic potential changes induced by the transient collision event of protein, also called the "nanoimpact" event, can be captured by the nanoelectrode as a potential probe. This potentiometric method is highly sensitive for charged proteins, and low-molecular-weight proteins less than 10 kDa can be detected in low-salt-concentration electrolytes. By analyzing the shape and magnitude of the recorded time-resolved potential change and its time derivative, we can reveal the charge and motion of the protein in the nonspecific protein-surface interaction event. The charge polarity variations of the proteins at different pH values were also successfully probed. Compared with synthetic spherical nanoparticles, the statistical analysis of many single-molecule nanoimpact events revealed a large variation in the recorded transient potential signals, which may be attributed to the intrinsic protein dynamics and surface charge heterogeneity, as suggested by the finite element method and molecular dynamic simulations.
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Affiliation(s)
- Popular Pandey
- Physics Department, Florida International University, Miami, Florida, 33199, USA
| | - Nisha Bhattarai
- Physics Department, Florida International University, Miami, Florida, 33199, USA
| | - Linjia Su
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida, 33199, USA
| | - Xuewen Wang
- Physics Department, Florida International University, Miami, Florida, 33199, USA
| | - Fenfei Leng
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida, 33199, USA
- Biomolecular Sciences Institute, Florida International University, Miami, Florida, 33199, USA
| | - Bernard Gerst-man
- Physics Department, Florida International University, Miami, Florida, 33199, USA
- Biomolecular Sciences Institute, Florida International University, Miami, Florida, 33199, USA
| | - Prem P. Chapagain
- Physics Department, Florida International University, Miami, Florida, 33199, USA
- Biomolecular Sciences Institute, Florida International University, Miami, Florida, 33199, USA
| | - Jin He
- Physics Department, Florida International University, Miami, Florida, 33199, USA
- Biomolecular Sciences Institute, Florida International University, Miami, Florida, 33199, USA
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25
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Kruchinin NY, Kucherenko MG. Conformational Changes of Polyelectrolyte Macromolecules on the Surface of Charged Prolate Metal Nanospheroid in Alternating Electric Field. POLYMER SCIENCE SERIES A 2022. [DOI: 10.1134/s0965545x2203004x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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26
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Brandner S, Becker T, Jekle M. Instantaneous wheat dough relaxation by alternating current electric fields. J FOOD ENG 2022. [DOI: 10.1016/j.jfoodeng.2021.110818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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27
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Hou Z, Jin Y, Li Y, Fan H, Xiao C, Li Q, Zhang Y. Immobilization of peroxisome proliferator-activated receptor gamma and the application in screening modulators of the receptor from herbal medicine. J Chromatogr B Analyt Technol Biomed Life Sci 2022; 1190:123098. [PMID: 35026651 DOI: 10.1016/j.jchromb.2022.123098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 12/28/2021] [Accepted: 01/03/2022] [Indexed: 10/19/2022]
Abstract
Screening and identification of potential compounds from herbal medicine is a prevailing way to find a lead for the development of innovative drugs. This promotes the development of new methods that are feasible in complex matrices. Here, we described a one-step reversible methodology to immobilize nuclear peroxisome proliferator-activated receptor gamma (PPARγ) onto amino microsphere coated with a DNA strand specifically binding to the receptor. The specific interaction allowed us to achieve the immobilization of PPARγ by mixing the DNA modified microspheres with E. coli lysates expressing the receptor. Characterization of the immobilized receptor was carried out by morphology and binding specificity analysis. Feasibility of immobilized PPARγ in the drug-receptor interaction analysis was performed by an injection amount-dependent method. Besides, immobilized PPARγ was also applied in screening modulators of the receptor from Coptidis Rhizoma extract. The binding of the screened compounds to PPARγ was examined by time-resolved fluorescence resonance energy transfer assay. The results showed that immobilized PPARγ was stable for thirty days with a high-specificity of ligand recognition at the subtype receptor level. Berberine and palmatine were the bioactive compounds of Coptidis Rhizoma specifically binding to PPARγ. The two compounds exhibited half maximal inhibitory concentrations of 4.11 and 2.98 μM during their binding to the receptor. We concluded that the current method is possible to become a common strategy for the immobilization of nuclear receptors, and the immobilized receptor is a high throughput method for recognizing and separating the receptor modulators from complex matrices including herbal medicine.
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Affiliation(s)
- Zhaoling Hou
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Ministry of Life Sciences and Medicine, Northwest University, Xi'an 710069, China
| | - Yan Jin
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Ministry of Life Sciences and Medicine, Northwest University, Xi'an 710069, China
| | - Yuxin Li
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Ministry of Life Sciences and Medicine, Northwest University, Xi'an 710069, China
| | - Hushuai Fan
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Ministry of Life Sciences and Medicine, Northwest University, Xi'an 710069, China
| | - Chaoni Xiao
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Ministry of Life Sciences and Medicine, Northwest University, Xi'an 710069, China
| | - Qian Li
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Ministry of Life Sciences and Medicine, Northwest University, Xi'an 710069, China
| | - Yajun Zhang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Ministry of Life Sciences and Medicine, Northwest University, Xi'an 710069, China.
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28
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Molina-Peña R, Haji Mansor M, Najberg M, Thomassin JM, Gueza B, Alvarez-Lorenzo C, Garcion E, Jérôme C, Boury F. Nanoparticle-containing electrospun nanofibrous scaffolds for sustained release of SDF-1α. Int J Pharm 2021; 610:121205. [PMID: 34670119 DOI: 10.1016/j.ijpharm.2021.121205] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 10/11/2021] [Accepted: 10/12/2021] [Indexed: 11/28/2022]
Abstract
Chemokines such as stromal cell-derived factor-1α (SDF-1α) regulate the migration of cancer cells that can spread from their primary tumor site by migrating up an SDF-1α concentration gradient, facilitating their local invasion and metastasis. Therefore, the implantation of SDF-1α-releasing scaffolds can be a useful strategy to trap cancer cells expressing the CXCR4 receptor. In this work, SDF-1α was encapsulated into poly(lactic-co-glycolic acid) (PLGA)-based nanoparticles and subsequently electrospun with chitosan to produce nanofibrous scaffolds of average fiber diameter of 261 ± 45 nm, intended for trapping glioblastoma (GBM) cells. The encapsulated SDF-1α maintained its biological activity after the electrospinning process as assessed by its capacity to induce the migration of cancer cells. The scaffolds could also provide sustained release of SDF-1α for at least 5 weeks. Using NIH3T3 mouse fibroblasts, human Thp-1 macrophages, and rat primary astrocytes we showed that the scaffolds possessed high cytocompatibility in vitro. Furthermore, a 7-day follow-up of Fischer rats bearing implanted scaffolds demonstrated the absence of adverse effects in vivo. In addition, the nanofibrous structure of the scaffolds provided excellent anchoring sites to support the adhesion of human GBM cells by extension of their pseudopodia. The scaffolds also demonstrated slow degradation kinetics, which may be useful in maximizing the time window for trapping GBM cells. As surgical resection does not permit a complete removal of GBM tumors, our results support the future implantation of these scaffolds into the walls of the resection cavity to evaluate their capacity to attract and trap the residual GBM cells in the brain.
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Affiliation(s)
- Rodolfo Molina-Peña
- Univ Angers, Université de Nantes, Inserm, CRCINA, SFR ICAT, F-49000 Angers, France
| | - Muhammad Haji Mansor
- Univ Angers, Université de Nantes, Inserm, CRCINA, SFR ICAT, F-49000 Angers, France; Center for Education and Research on Macromolecules (CERM), CESAM-UR, University of Liège, B-4000 Liège, Belgium
| | - Mathie Najberg
- Univ Angers, Université de Nantes, Inserm, CRCINA, SFR ICAT, F-49000 Angers, France; Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, I+D Farma (GI-1645), Facultad de Farmacia, and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Jean-Michel Thomassin
- Center for Education and Research on Macromolecules (CERM), CESAM-UR, University of Liège, B-4000 Liège, Belgium
| | - Baya Gueza
- Univ Angers, Université de Nantes, Inserm, CRCINA, SFR ICAT, F-49000 Angers, France
| | - Carmen Alvarez-Lorenzo
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, I+D Farma (GI-1645), Facultad de Farmacia, and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Emmanuel Garcion
- Univ Angers, Université de Nantes, Inserm, CRCINA, SFR ICAT, F-49000 Angers, France
| | - Christine Jérôme
- Center for Education and Research on Macromolecules (CERM), CESAM-UR, University of Liège, B-4000 Liège, Belgium
| | - Frank Boury
- Univ Angers, Université de Nantes, Inserm, CRCINA, SFR ICAT, F-49000 Angers, France.
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29
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Covalent attachment of three derivatives of pegylated RGD peptides on the NH2-terminated silicon surfaces: Impact on fibroblast cell behavior. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2021; 1863:183770. [PMID: 34517002 DOI: 10.1016/j.bbamem.2021.183770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 08/30/2021] [Accepted: 09/01/2021] [Indexed: 11/20/2022]
Abstract
This paper describes a simple strategy for covalent immobilization of the NHS-PEG-RGD peptide with the three different PEG lengths (8, 13, and 22) onto the amine-terminated monolayers with the subsequent investigation of fibroblast cellular response to the three derivatives of pegylated RGD peptides-modified substrates. First, acetamide-terminated monolayers were prepared on the hydride terminated silicon surface to protect NH2-terminated monolayers. This was followed by the removal of the protective groups, and the reaction of NHS-PEG8-RGD, NHS-PEG13-RGD and NHS-PEG22-RGD peptides with the NH2-terminated monolayers while reducing nonspecific protein adsorption. Analysis of X-ray photoelectron spectroscopy (XPS), Fourier Transform Infrared (ATR-FTIR) spectroscopy, and Ellipsometry measurements demonstrated that PEG13-RGD peptide forms relatively a more homogenous, thicker and stable structure compared with those of PEG8-RGD and PEG22-RGD peptide. The quantitative and qualitative assessment of cell adhesion, spreading, and proliferation indicated that relatively further elongated fibroblast cells attached on the PEG13-RGD peptide relative to those on the PEG8-RGD and PEG22-RGD peptide. The results presented here may offer a developed strategy based on the length of the spacer to regulate cellular behavior on the surface substrates.
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30
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Ccorahua R, Noguchi H, Hayamizu Y. Cosolvents Restrain Self-Assembly of a Fibroin-Like Peptide on Graphite. J Phys Chem B 2021; 125:10893-10899. [PMID: 34559528 DOI: 10.1021/acs.jpcb.1c02594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Controllable self-assembly of peptides on solid surfaces has been investigated for establishing functional bio/solid interfaces. In this work, we study the influence of organic solvents on the self-assembly of a fibroin-like peptide on a graphite surface. The peptide has been designed by mimicking fibroin proteins to have strong hydrogen bonds among peptides enabling their self-assembly. We have employed cosolvents of water and organic solvents with a wide range of dielectric constants to control peptide self-assembly on the surface. Atomic force microscopy has revealed that the peptides self-assemble into highly ordered monolayer-thick linear structures on graphite after incubation in pure water, where the coverage of peptides on the surface is more than 85%. When methanol is mixed, the peptide coverage becomes zero at a threshold concentration of 30% methanol on graphite and 25% methanol on MoS2. The threshold concentration in ethanol, isopropanol, dimethyl sulfoxide, and acetone varies depending on the dielectric constant with restraining self-assembly of the peptides, and particularly low dielectric-constant protic solvents prevent the peptide self-assembly significantly. The observed phenomena are explained by competitive surface adsorption of the organic solvents and peptides and the solvation effect of the peptide assembly.
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Affiliation(s)
- Robert Ccorahua
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Tokyo 152-8550, Japan
| | - Hironaga Noguchi
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Tokyo 152-8550, Japan
| | - Yuhei Hayamizu
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Tokyo 152-8550, Japan
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31
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Chandrasekar K, Farrugia BL, Johnson L, Marks D, Irving D, Elgundi Z, Lau K, Kim HN, Rnjak‐Kovacina J, Bilek MM, Whitelock JM, Lord MS. Effect of Recombinant Human Perlecan Domain V Tethering Method on Protein Orientation and Blood Contacting Activity on Polyvinyl Chloride. Adv Healthc Mater 2021; 10:e2100388. [PMID: 33890424 DOI: 10.1002/adhm.202100388] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 04/06/2021] [Indexed: 12/23/2022]
Abstract
Surface modification of biomaterials is a promising approach to control biofunctionality while retaining the bulk biomaterial properties. Perlecan is the major proteoglycan in the vascular basement membrane that supports low levels of platelet adhesion but not activation. Thus, perlecan is a promising bioactive for blood-contacting applications. This study furthers the mechanistic understanding of platelet interactions with perlecan by establishing that platelets utilize domains III and V of the core protein for adhesion. Polyvinyl chloride (PVC) is functionalized with recombinant human perlecan domain V (rDV) to explore the effect of the tethering method on proteoglycan orientation and bioactivity. Tethering of rDV to PVC is achieved via either physisorption or covalent attachment via plasma immersion ion implantation (PIII) treatment. Both methods of rDV tethering reduce platelet adhesion and activation compared to the pristine PVC, however, the mechanisms are unique for each tethering method. Physisorption of rDV on PVC orientates the molecule to hinder access to the integrin-binding region, which inhibits platelet adhesion. In contrast, PIII treatment orientates rDV to allow access to the integrin-binding region, which is rendered antiadhesive to platelets via the glycosaminoglycan (GAG) chain. These effects demonstrate the potential of rDV biofunctionalization to modulate platelet interactions for blood contacting applications.
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Affiliation(s)
| | - Brooke L. Farrugia
- Department of Biomedical Engineering Melbourne School of Engineering The University of Melbourne Melbourne VIC 3010 Australia
| | - Lacey Johnson
- Australian Red Cross Lifeblood Alexandria NSW 2015 Australia
| | - Denese Marks
- Australian Red Cross Lifeblood Alexandria NSW 2015 Australia
| | - David Irving
- Australian Red Cross Lifeblood Alexandria NSW 2015 Australia
| | - Zehra Elgundi
- Graduate School of Biomedical Engineering UNSW Sydney Sydney NSW 2052 Australia
| | - Kieran Lau
- Graduate School of Biomedical Engineering UNSW Sydney Sydney NSW 2052 Australia
| | - Ha Na Kim
- Graduate School of Biomedical Engineering UNSW Sydney Sydney NSW 2052 Australia
| | | | - Marcela M. Bilek
- The Charles Perkins Centre University of Sydney Sydney NSW 2006 Australia
- The University of Sydney Nano Institute University of Sydney Sydney NSW 2006 Australia
- School of Physics University of Sydney Sydney NSW 2006 Australia
- School of Biomedical Engineering University of Sydney Sydney NSW 2006 Australia
| | - John M. Whitelock
- Graduate School of Biomedical Engineering UNSW Sydney Sydney NSW 2052 Australia
| | - Megan S. Lord
- Graduate School of Biomedical Engineering UNSW Sydney Sydney NSW 2052 Australia
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32
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Noriega R. Measuring the Multiscale Dynamics, Structure, and Function of Biomolecules at Interfaces. J Phys Chem B 2021; 125:5667-5675. [PMID: 34042455 DOI: 10.1021/acs.jpcb.1c01546] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The individual and collective structure and properties of biomolecules can change dramatically when they are localized at an interface. However, the small spatial extent of interfacial regions poses challenges to the detailed characterization of multiscale processes that dictate the structure and function of large biological units such as peptides, proteins, or nucleic acids. This Perspective surveys a broad set of tools that provide new opportunities to probe complex, dynamic interfaces across the vast range of temporal regimes that connect molecular-scale events to macroscopic observables. An emphasis is placed on the integration over multiple time scales, the use of complementary techniques, and the incorporation of external stimuli to control interfacial properties with spatial, temporal, and chemical specificity.
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Affiliation(s)
- Rodrigo Noriega
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
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33
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Elkayal R, Motawea A, Reicha FM, Elmezayyen AS. Novel electro self-assembled DNA nanospheres as a drug delivery system for atenolol. NANOTECHNOLOGY 2021; 32:255602. [PMID: 33797397 DOI: 10.1088/1361-6528/abd727] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 12/29/2020] [Indexed: 06/12/2023]
Abstract
We describe new method for preparing DNA nanospheres for a self-assembled atenolol@DNA (core/shell) drug delivery system. In this paper, we propose the electrochemical transformation of an alkaline polyelectrolyte solution of DNA into DNA nanospheres. We successfully electrosynthesized DNA nanospheres that were stable for at least 2 months at 4 °C. UV-visible spectra of the prepared nanospheres revealed a peak ranging from 372 to 392 nm depending on the DNA concentration and from 361 to 398.3 nm depending on the electrospherization time. This result, confirmed with size distribution curves worked out from transmission electron microscopy (TEM) images, showed that increasing electrospherization time (6, 12 and 24 h) induces an increase in the average size of DNA nanospheres (48, 65.5 and 117 nm, respectively). In addition, the average size of DNA nanospheres becomes larger (37.8, 48 and 76.5 nm) with increasing DNA concentration (0.05, 0.1 and 0.2 wt%, respectively). Also, the affinity of DNA chains for the surrounding solvent molecules changed from favorable to bad with concomitant extreme reduction in the zeta potential from -31 mV to -17 mV. Principally, the attractive and hydrophobic interactions tend to compact the DNA chain into a globule, as confirmed by Fourier transform infrared spectroscopy (FTIR) and TEM. To advance possible applications, we successfully electro self-assembled an atenolol@DNA drug delivery system. Our findings showed that electrospherization as a cost-benefit technique could be effectively employed for sustained drug release. This delivery system achieved a high entrapment efficiency of 68.03 ± 2.7% and a moderate drug-loading efficiency of 3.73%. The FTIR spectra verified the absence of any chemical interaction between the drug and the DNA during the electrospherization process. X-ray diffraction analysis indicated noteworthy lessening in atenolol crystallinity. The present findings could aid the effectiveness of electrospherized DNA for use in various other pharmaceutical and biomedical applications.
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Affiliation(s)
- Rehab Elkayal
- Biological Advanced Materials, Physics Department, Faculty of Science, Mansoura University, Mansoura, Egypt
| | - Amira Motawea
- Department of Pharmaceutics, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Fikry M Reicha
- Biological Advanced Materials, Physics Department, Faculty of Science, Mansoura University, Mansoura, Egypt
| | - Ayman S Elmezayyen
- Biological Advanced Materials, Physics Department, Faculty of Science, Mansoura University, Mansoura, Egypt
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34
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Cho Y, Lee M, Park S, Kim Y, Lee E, Im SG. A Versatile Surface Modification Method via Vapor-phase Deposited Functional Polymer Films for Biomedical Device Applications. BIOTECHNOL BIOPROC E 2021; 26:165-178. [PMID: 33821132 PMCID: PMC8013202 DOI: 10.1007/s12257-020-0269-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 10/05/2020] [Accepted: 10/08/2020] [Indexed: 01/01/2023]
Abstract
For last two decades, the demand for precisely engineered three-dimensional structures has increased continuously for the developments of biomaterials. With the recent advances in micro- and nano-fabrication techniques, various devices with complex surface geometries have been devised and produced in the pharmaceutical and medical fields for various biomedical applications including drug delivery and biosensors. These advanced biomaterials have been designed to mimic the natural environments of tissues more closely and to enhance the performance for their corresponding biomedical applications. One of the important aspects in the rational design of biomaterials is how to configure the surface of the biomedical devices for better control of the chemical and physical properties of the bioactive surfaces without compromising their bulk characteristics. In this viewpoint, it of critical importance to secure a versatile method to modify the surface of various biomedical devices. Recently, a vapor phase method, termed initiated chemical vapor deposition (iCVD) has emerged as damage-free method highly beneficial for the conformal deposition of various functional polymer films onto many kinds of micro- and nano-structured surfaces without restrictions on the substrate material or geometry, which is not trivial to achieve by conventional solution-based surface functionalization methods. With proper structural design, the functional polymer thin film via iCVD can impart required functionality to the biomaterial surfaces while maintaining the fine structure thereon. We believe the iCVD technique can be not only a valuable approach towards fundamental cell-material studies, but also of great importance as a platform technology to extend to other prospective biomaterial designs and material interface modifications for biomedical applications.
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Affiliation(s)
- Younghak Cho
- Department of Chemical and Biomolecular Engineering, Korea Advanced of Institute of Science and Technology, Daejeon, 34141 Korea
| | - Minseok Lee
- Department of Chemical and Biomolecular Engineering, Korea Advanced of Institute of Science and Technology, Daejeon, 34141 Korea
| | - Seonghyeon Park
- Department of Chemical and Biomolecular Engineering, Korea Advanced of Institute of Science and Technology, Daejeon, 34141 Korea
| | - Yesol Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced of Institute of Science and Technology, Daejeon, 34141 Korea
| | - Eunjung Lee
- Department of Chemical and Biomolecular Engineering, Korea Advanced of Institute of Science and Technology, Daejeon, 34141 Korea
| | - Sung Gap Im
- Department of Chemical and Biomolecular Engineering, Korea Advanced of Institute of Science and Technology, Daejeon, 34141 Korea
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35
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Wong KU, Zhang A, Akhavan B, Bilek MM, Yeo GC. Biomimetic Culture Strategies for the Clinical Expansion of Mesenchymal Stromal Cells. ACS Biomater Sci Eng 2021. [PMID: 33599471 DOI: 10.1021/acsbiomaterials.0c01538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Mesenchymal stromal/stem cells (MSCs) typically require significant ex vivo expansion to achieve the high cell numbers required for research and clinical applications. However, conventional MSC culture on planar (2D) plastic surfaces has been shown to induce MSC senescence and decrease cell functionality over long-term proliferation, and usually, it has a high labor requirement, a high usage of reagents, and therefore, a high cost. In this Review, we describe current MSC-based therapeutic strategies and outline the important factors that need to be considered when developing next-generation cell expansion platforms. To retain the functional value of expanded MSCs, ex vivo culture systems should ideally recapitulate the components of the native stem cell microenvironment, which include soluble cues, resident cells, and the extracellular matrix substrate. We review the interplay between these stem cell niche components and their biological roles in governing MSC phenotype and functionality. We discuss current biomimetic strategies of incorporating biochemical and biophysical cues in MSC culture platforms to grow clinically relevant cell numbers while preserving cell potency and stemness. This Review summarizes the current state of MSC expansion technologies and the challenges that still need to be overcome for MSC clinical applications to be feasible and sustainable.
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Affiliation(s)
- Kuan Un Wong
- Charles Perkins Center, The University of Sydney, Sydney, New South Wales 2006, Australia.,School of Life and Environmental Sciences, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Anyu Zhang
- School of Physics, The University of Sydney, Sydney, New South Wales 2006, Australia.,School of Biomedical Engineering, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Behnam Akhavan
- School of Physics, The University of Sydney, Sydney, New South Wales 2006, Australia.,School of Biomedical Engineering, The University of Sydney, Sydney, New South Wales 2006, Australia.,The University of Sydney Nano Institute, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Marcela M Bilek
- Charles Perkins Center, The University of Sydney, Sydney, New South Wales 2006, Australia.,School of Physics, The University of Sydney, Sydney, New South Wales 2006, Australia.,School of Biomedical Engineering, The University of Sydney, Sydney, New South Wales 2006, Australia.,The University of Sydney Nano Institute, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Giselle C Yeo
- Charles Perkins Center, The University of Sydney, Sydney, New South Wales 2006, Australia.,School of Life and Environmental Sciences, The University of Sydney, Sydney, New South Wales 2006, Australia
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36
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Song X, Bu Y. Electric field controlled uphill electron migration along α-helical oligopeptides. Phys Chem Chem Phys 2021; 23:1464-1474. [PMID: 33399139 DOI: 10.1039/d0cp05085g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A systematic study on applied electric field effects (Eapp) on electron transfer along the peptides is very important for the regulation of electron transfer behaviors so as to realize the functions of proteins. In this work, we computationally investigated the uphill migration behaviors of excess electrons along the peptide chains under Eapp using the density functional theory method. We examined the electronic property changes of the model α-helical oligopeptides, the dynamics behavior of an excess electron along the peptide chains under Eapp opposite to the internal dipole field of peptides. We found that Eapp of different intensities can effectively modulate the electron-binding abilities, Frontier molecular orbital (FMO) energies and distributions, dipole moments and other corresponding properties with different degrees. The electron-binding abilities of α-helical oligopeptides revealed by vertical electron affinity and FMO energies decrease in weak Eapp and then increase greatly in high Eapp, while the dipole moments change mildly in weak Eapp and increase significantly until a threshold and then become gentle in high Eapp. Analysis of FMO and electron distributions indicates that an excess electron can migrate uphill from the N-terminus to the C-terminus of the α-helical peptides in an irregular jump mode as Eapp linearly increases. Another interesting finding is that α-helical peptides with diverse chain lengths have different sensitivities to Eapp. The longer the peptide is, the more obvious the effects of Eapp are. Additionally, compared to the Eapp effect on linear oligopeptides, we summarized the systematic rule about the Eapp effect on excess electron migration uphill along the peptide chains. Clearly, this work not only enriches the information of the Eapp effect on electronic properties and electron transfers in the helical peptides, but also provides a new perspective for modulating electron migration behaviors in protein electronics engineering.
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Affiliation(s)
- Xiufang Song
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China.
| | - Yuxiang Bu
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China.
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Bezem MT, Johannessen FG, Kråkenes TA, Sailor MJ, Martinez A. Relevance of Electrostatics for the Interaction of Tyrosine Hydroxylase with Porous Silicon Nanoparticles. Mol Pharm 2021; 18:976-985. [PMID: 33417459 PMCID: PMC7927144 DOI: 10.1021/acs.molpharmaceut.0c00960] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
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Tyrosine hydroxylase (TH) is the
enzyme catalyzing the rate-limiting
step in the synthesis of dopamine in the brain. Developing enzyme
replacement therapies using TH could therefore be beneficial to patient
groups with dopamine deficiency, and the use of nanocarriers that
cross the blood–brain barrier seems advantageous for this purpose.
Nanocarriers may also help to maintain the structure and function
of TH, which is complex and unstable. Understanding how TH may interact
with a nanocarrier is therefore crucial for the investigation of such
therapeutic applications. This work describes the interaction of TH
with porous silicon nanoparticles (pSiNPs), chosen since they have
been shown to deliver other macromolecular therapeutics successfully
to the brain. Size distributions obtained by dynamic light scattering
show a size increase of pSiNPs upon addition of TH and the changes
observed at the surface of pSiNPs by transmission electron microscopy
also indicated TH binding at pH 7. As pSiNPs are negatively charged,
we also investigated the binding at pH 6, which makes TH less negatively
charged than at pH 7. However, as seen by thioflavin-T fluorescence,
TH aggregated at this more acidic pH. TH activity was unaffected by
the binding to pSiNPs most probably because the active site stays
available for catalysis, in agreement with calculations of the surface
electrostatic potential pointing to the most positively charged regulatory
domains in the tetramer as the interacting regions. These results
reveal pSiNPs as a promising delivery device of enzymatically active
TH to increase local dopamine synthesis.
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Affiliation(s)
- Maria T Bezem
- Department of Biomedicine, University of Bergen, Jonas Lies vei 91, Bergen 5009, Norway
| | - Fredrik G Johannessen
- Department of Biomedicine, University of Bergen, Jonas Lies vei 91, Bergen 5009, Norway
| | - Trond-André Kråkenes
- Department of Biomedicine, University of Bergen, Jonas Lies vei 91, Bergen 5009, Norway
| | - Michael J Sailor
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
| | - Aurora Martinez
- Department of Biomedicine, University of Bergen, Jonas Lies vei 91, Bergen 5009, Norway
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38
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Molecular Decoration of Ceramic Supports for Highly Effective Enzyme Immobilization-Material Approach. MATERIALS 2021; 14:ma14010201. [PMID: 33401646 PMCID: PMC7794798 DOI: 10.3390/ma14010201] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 12/29/2020] [Accepted: 12/29/2020] [Indexed: 01/16/2023]
Abstract
A highly effective method was developed to functionalize ceramic supports (Al2O3 powders and membranes) using newly synthesized spacer molecules. The functionalized materials were subsequently utilized for Candida antarctica lipase B enzyme immobilization. The objective is to systematically evaluate the impact of various spacer molecules grafted onto the alumina materials will affect both the immobilization of the enzymes and specific material surface properties, critical to enzymatic reactors performance. The enzyme loading was significantly improved for the supports modified with shorter spacer molecules, which possessed higher grafting effectiveness on the order of 90%. The specific enzyme activity was found to be much higher for samples functionalized with longer modifiers yielding excellent enantioselectivity >97%. However, the enantiomeric ratio of the immobilized lipase was slightly lower in the case of shorter spacer molecules.
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39
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Reactive magnetron co-sputtering of Ti-xCuO coatings: Multifunctional interfaces for blood-contacting devices. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 116:111198. [DOI: 10.1016/j.msec.2020.111198] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 05/20/2020] [Accepted: 06/16/2020] [Indexed: 02/08/2023]
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40
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Song Y, Wu R, Wang Y, Liu L, Dong M. Structural conversion of human islet amyloid polypeptide aggregates under an electric field. Chem Commun (Camb) 2020; 56:11497-11500. [PMID: 32852504 DOI: 10.1039/d0cc04466k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Electric fields (EFs) in biological systems are well known, and their presence implies the activity of protein ion channels and pumps in various cells. The aggregation of islet amyloid polypeptides (IAPP) was recently found in human brain tissue, and this was related to the electrical activity of neurons and caused neuronal loss. However, the association between amyloid formation and the electric field is still unknown. Herein a direct method to stimulate the formation of the hIAPP peptide under an EF is reported.
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Affiliation(s)
- Yongxiu Song
- Institute for Advanced Materials, Jiangsu University, China.
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41
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Jabłuszewska A, Krawczuk A, Dos Santos LHR, Macchi P. Accurate Modelling of Group Electrostatic Potential and Distributed Polarizability in Dipeptides. Chemphyschem 2020; 21:2155-2165. [DOI: 10.1002/cphc.202000441] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 07/23/2020] [Indexed: 12/28/2022]
Affiliation(s)
- Angelika Jabłuszewska
- Faculty of Chemistry Jagiellonian University in Krakow Gronostajowa 2 30-387 Krakow Poland
| | - Anna Krawczuk
- Faculty of Chemistry Jagiellonian University in Krakow Gronostajowa 2 30-387 Krakow Poland
| | - Leonardo H. R. Dos Santos
- Departamento de Química Universidade Federal de Minas Gerais Av. Antônio Carlos 6627 31270-901 Belo Horizonte MG Brazil
| | - Piero Macchi
- Department of Chemistry, Materials and Chemical Engineering Polytechnics of Milan Via Mancinelli 7 20131 Milan Italy
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42
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Lau K, Akhavan B, Lord MS, Bilek MM, Rnjak-Kovacina J. Dry Surface Treatments of Silk Biomaterials and Their Utility in Biomedical Applications. ACS Biomater Sci Eng 2020; 6:5431-5452. [PMID: 33320554 DOI: 10.1021/acsbiomaterials.0c00888] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Silk-based materials are widely used in biomaterial and tissue engineering applications due to their cytocompatibility and tunable mechanical and biodegradation properties. Aqueous-based processing techniques have enabled the fabrication of silk into a broad range of material formats, making it a highly versatile material platform across multiple industries. Utilizing the full potential of silk in biomedical applications frequently requires modification of silk's surface properties. Dry surface modification techniques, including irradiation and plasma treatment, offer an alternative to the conventional wet chemistry strategies to modify the physical and chemical properties of silk materials without compromising their bulk properties. While dry surface modification techniques are more prevalent in textiles and sterilization applications, the range of modifications available and resultant changes to silk materials all point to the utility of dry surface modification for the development of new, functional silk biomaterials. Dry surface treatment affects the surface chemistry, secondary structure, molecular weight, topography, surface energy, and mechanical properties of silk materials. This Review describes and critically evaluates the effect of physical dry surface modification techniques, including irradiation and plasma processes, on silk materials and discusses their utility in biomedical applications, including recent examples of modulation of cell/protein interactions on silk biomaterials, in vivo performance of implanted biomaterials, and applications in material biofunctionalization and lithographic surface patterning approaches.
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Affiliation(s)
- Kieran Lau
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Behnam Akhavan
- School of Physics, University of Sydney, Sydney, NSW 2006, Australia.,School of Biomedical Engineering, University of Sydney, Sydney, NSW 2006, Australia.,University of Sydney Nano Institute, University of Sydney, Sydney NSW 2006, Australia
| | - Megan S Lord
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Marcela M Bilek
- School of Physics, University of Sydney, Sydney, NSW 2006, Australia.,School of Biomedical Engineering, University of Sydney, Sydney, NSW 2006, Australia.,University of Sydney Nano Institute, University of Sydney, Sydney NSW 2006, Australia.,Charles Perkins Centre, University of Sydney, Sydney, NSW 2006, Australia
| | - Jelena Rnjak-Kovacina
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
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43
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Zhao X, Jin Y, Yuan X, Hou Z, Chen Z, Fu X, Li Q, Wang J, Zhang Y. Covalent Inhibitor-Based One-Step Method for Endothelin Receptor A Immobilization: from Ligand Recognition to Lead Identification. Anal Chem 2020; 92:13750-13758. [DOI: 10.1021/acs.analchem.0c01807] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Xinfeng Zhao
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education; College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Yahui Jin
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education; College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Xinyi Yuan
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education; College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Zhaoling Hou
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education; College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Ziyue Chen
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education; College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Xiaoying Fu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education; College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Qian Li
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education; College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Jing Wang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education; College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Yajun Zhang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education; College of Life Sciences, Northwest University, Xi’an 710069, China
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44
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Alavi SK, Lotz O, Akhavan B, Yeo G, Walia R, McKenzie DR, Bilek MM. Atmospheric Pressure Plasma Jet Treatment of Polymers Enables Reagent-Free Covalent Attachment of Biomolecules for Bioprinting. ACS APPLIED MATERIALS & INTERFACES 2020; 12:38730-38743. [PMID: 32706575 DOI: 10.1021/acsami.0c07169] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Three-dimensional (3D) bioprinting, where cells, hydrogels, and structural polymers can be printed layer by layer into complex designs, holds great promise for advances in medicine and the biomedical sciences. In principle, this technique enables the creation of highly patient-specific disease models and biomedical implants. However, an ability to tailor surface biocompatibility and interfacial bonding between printed components, such as polymers and hydrogels, is currently lacking. Here we demonstrate that an atmospheric pressure plasma jet (APPJ) can locally activate polymeric surfaces for the reagent-free covalent attachment of proteins and hydrogel in a single-step process at desired locations. Polyethylene and poly-ε-caprolactone were used as example polymers. Covalent attachment of the proteins and hydrogel was demonstrated by resistance to removal by rigorous sodium dodecyl sulfate washing. The immobilized protein and hydrogel layers were analyzed using Fourier transform infrared and X-ray photoelectron spectroscopy. Importantly, the APPJ surface activation also rendered the polymer surfaces mildly hydrophilic as required for optimum biocompatibility. Water contact angles were observed to be stable within a range where the conformation of biomolecules is preserved. Single and double electrode designs of APPJs were compared in their characteristics relevant to localized surface functionalization, plume length, and shape. As a proof of efficacy in a biological context, APPJ-treated polyethylene functionalized with fibronectin was used to demonstrate improvements in cell adhesion and proliferation. These results have important implications for the development of a new generation of 3D bioprinters capable of spatially patterned and tailored surface functionalization performed during the 3D printing process in situ.
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Affiliation(s)
| | - Oliver Lotz
- School of Physics, The University of Sydney, Sydney, New South Wales 2006 Australia
- School of Biomedical Engineering, The University of Sydney, Sydney, New South Wales 2006 Australia
| | - Behnam Akhavan
- School of Physics, The University of Sydney, Sydney, New South Wales 2006 Australia
- School of Biomedical Engineering, The University of Sydney, Sydney, New South Wales 2006 Australia
| | - Giselle Yeo
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales 2006 Australia
| | - Rashi Walia
- School of Physics, The University of Sydney, Sydney, New South Wales 2006 Australia
| | - David R McKenzie
- School of Physics, The University of Sydney, Sydney, New South Wales 2006 Australia
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales 2006 Australia
- Sydney Nano Institute, The University of Sydney, Sydney, New South Wales 2006 Australia
| | - Marcela M Bilek
- School of Physics, The University of Sydney, Sydney, New South Wales 2006 Australia
- School of Biomedical Engineering, The University of Sydney, Sydney, New South Wales 2006 Australia
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales 2006 Australia
- Sydney Nano Institute, The University of Sydney, Sydney, New South Wales 2006 Australia
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45
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Pirzada M, Sehit E, Altintas Z. Cancer biomarker detection in human serum samples using nanoparticle decorated epitope-mediated hybrid MIP. Biosens Bioelectron 2020; 166:112464. [PMID: 32771854 DOI: 10.1016/j.bios.2020.112464] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 07/07/2020] [Accepted: 07/17/2020] [Indexed: 01/22/2023]
Abstract
The determination of disease-associated molecules at trace amounts is a key factor for early and efficient diagnosis from human body fluids. Herein, an ultrasensitive electrochemical sensor based on hybrid epitope imprinting and nanomaterial amplification was developed. The hybrid epitope imprinting was achieved by electropolymerization in the presence of two computationally selected and cysteine modified epitopes of neuron specific enolase (NSE), as-synthesized gold nanoparticles (AuNPs), and functional monomer. The AuNPs decorated epitope-mediated hybrid MIPs, as well as the standard hybrid MIPs, were utilized for the preparation of electrochemical sensors to demonstrate the impact of nanomaterial's modification in the polymer network for biomarker sensing. The fabrication process of both sensor types was investigated by employing cyclic voltammetry, square wave voltammetry, atomic force microscopy, and scanning electron microscopy. The biomarker assay using the standard hybrid MIPs resulted in 2.5-fold higher sensitivity compared to single epitope imprints, whereas the AuNP-hybrid MIPs enhanced the sensitivity level to a great extent and allowed the recognition of NSE in human serum in a concentration range of 25-4000 pg/mL. Comparative selectivity studies with non-imprinted polymer resulted in an imprinting factor of 4.2, confirming the high target selectivity of AuNP-MIP cavities. Cross-reaction of the sensor with four reference molecules (dopamine, bovine serum albumin, glucose and elongated peptide) was negligible. As compared to current strategies for epitope imprinting which rely on single epitopes for the formation of molecular cavities, the hybrid epitope-MIPs, particularly with the inclusion of AuNPs have provided more desirable sensing platforms with high sensitivity, affinity and specificity.
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Affiliation(s)
- Muqsit Pirzada
- Technical University of Berlin, Straße des 17. Juni 124, Berlin, 10623, Germany
| | - Ekin Sehit
- Technical University of Berlin, Straße des 17. Juni 124, Berlin, 10623, Germany
| | - Zeynep Altintas
- Technical University of Berlin, Straße des 17. Juni 124, Berlin, 10623, Germany.
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46
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Tada K, Hayashi A, Maruyama T, Koga H, Yamanaka S, Okumura M, Tanaka S. Effect of surface interactions on spin contamination errors of homogeneous spin dimers, chains, and films: model calculations of Au/MgO and Au/BaO systems. Mol Phys 2020. [DOI: 10.1080/00268976.2020.1791989] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Kohei Tada
- Research Institute of Electrochemical Energy, Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Japan
| | - Akihide Hayashi
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Japan
| | - Tomohiro Maruyama
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Japan
| | - Hiroaki Koga
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Japan
- Research Organization for Information Science and Technology (RIST), Tokyo, Japan
- Element Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Kyoto, Japan
| | - Shusuke Yamanaka
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Japan
| | - Mitsutaka Okumura
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Japan
- Element Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Kyoto, Japan
| | - Shingo Tanaka
- Research Institute of Electrochemical Energy, Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Japan
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47
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Jo SB, Park CY, Kang HK, Jung SY, Min BM. The laminin-211-derived PPFEGCIWN motif accelerates wound reepithelialization and increases phospho-FAK-Tyr397 and Rac1-GTP levels in a rat excisional wound splinting model. J Tissue Eng Regen Med 2020; 14:1100-1112. [PMID: 32592615 DOI: 10.1002/term.3084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 05/31/2020] [Accepted: 06/03/2020] [Indexed: 11/11/2022]
Abstract
We previously reported that the PPFEGCIWN motif (Ln2-LG3-P2-DN3), residues 2678-2686 of the human laminin α2 chain, promotes cell attachment of normal human epidermal keratinocytes (NHEKs) and dermal fibroblasts (NHDFs); however, its in vivo effects on cutaneous wound healing have not yet been examined. In this study, we sought to determine whether Ln2-LG3-P2-DN3 could promote full-thickness cutaneous wound healing by accelerating wound reepithelialization and wound closure in vivo. Ln2-LG3-P2-DN3 had significantly higher cell attachment and spreading activities than vehicle or scrambled peptide control in both NHEKs and NHDFs in vitro. The wound area was significantly smaller in rats treated with Ln2-LG3-P2-DN3 than in those treated with vehicle or scrambled peptide in the early phase of wound healing. Furthermore, Ln2-LG3-P2-DN3 significantly accelerated wound reepithelialization relative to vehicle or scrambled peptide and promoted FAK-Tyr397 phosphorylation and Rac1 activation. Collectively, our findings suggest that the PPFEGCIWN motif has potential as a therapeutic agent for cutaneous regeneration via the acceleration of wound reepithelization and wound closure.
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Affiliation(s)
- Seung Bin Jo
- Department of Oral Biochemistry and Program in Cancer and Developmental Biology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, South Korea
| | - Cho Yeon Park
- Department of Oral Biochemistry and Program in Cancer and Developmental Biology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, South Korea
| | - Hyun Ki Kang
- Department of Oral Biochemistry and Program in Cancer and Developmental Biology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, South Korea
| | - Sung Youn Jung
- Department of Oral Biochemistry and Program in Cancer and Developmental Biology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, South Korea
| | - Byung-Moo Min
- Department of Oral Biochemistry and Program in Cancer and Developmental Biology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, South Korea
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48
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A multifaceted biomimetic interface to improve the longevity of orthopedic implants. Acta Biomater 2020; 110:266-279. [PMID: 32344174 DOI: 10.1016/j.actbio.2020.04.020] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/23/2020] [Accepted: 04/09/2020] [Indexed: 01/22/2023]
Abstract
The rise of additive manufacturing has provided a paradigm shift in the fabrication of precise, patient-specific implants that replicate the physical properties of native bone. However, eliciting an optimal biological response from such materials for rapid bone integration remains a challenge. Here we propose for the first time a one-step ion-assisted plasma polymerization process to create bio-functional 3D printed titanium (Ti) implants that offer rapid bone integration. Using selective laser melting, porous Ti implants with enhanced bone-mimicking mechanical properties were fabricated. The implants were functionalized uniformly with a highly reactive, radical-rich polymeric coating generated using a unique combination of plasma polymerization and plasma immersion ion implantation. We demonstrated the performance of such activated Ti implants with a focus on the coating's homogeneity, stability, and biological functionality. It was shown that the optimized coating was highly robust and possessed superb physico-chemical stability in a corrosive physiological solution. The plasma activated coating was cytocompatible and non-immunogenic; and through its high reactivity, it allowed for easy, one-step covalent immobilization of functional biomolecules in the absence of solvents or chemicals. The activated Ti implants bio-functionalized with bone morphogenetic protein 2 (BMP-2) showed a reduced protein desorption and a more sustained osteoblast response both in vitro and in vivo compared to implants modified through conventional physisorption of BMP-2. The versatile new approach presented here will enable the development of bio-functionalized additively manufactured implants that are patient-specific and offer improved integration with host tissue. STATEMENT OF SIGNIFICANCE: Additive manufacturing has revolutionized the fabrication of patient-specific orthopedic implants. Although such 3D printed implants can show desirable mechanical and mass transport properties, they often require surface bio-functionalities to enable control over the biological response. Surface covalent immobilization of bioactive molecules is a viable approach to achieve this. Here we report the development of additively manufactured titanium implants that precisely replicate the physical properties of native bone and are bio-functionalized in a simple, reagent-free step. Our results show that covalent attachment of bone-related growth factors through ion-assisted plasma polymerized interlayers circumvents their desorption in physiological solution and significantly improves the bone induction by the implants both in vitro and in vivo.
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49
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Fischer NG, He J, Aparicio C. Surface Immobilization Chemistry of a Laminin-Derived Peptide Affects Keratinocyte Activity. COATINGS (BASEL, SWITZERLAND) 2020; 10:560. [PMID: 32855816 PMCID: PMC7448695 DOI: 10.3390/coatings10060560] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Many chemical routes have been proposed to immobilize peptides on biomedical device surfaces, and in particular, on dental implants to prevent peri-implantitis. While a number of factors affect peptide immobilization quality, an easily controllable factor is the chemistry used to immobilize peptides. These factors affect peptide chemoselectivity, orientation, etc., and ultimately control biological activity. Using many different physical and chemical routes for peptide coatings, previous research has intensely focused on immobilizing antimicrobial elements on dental implants to reduce infection rates. Alternatively, our strategy here is different and focused on promoting formation of a long-lasting biological seal between the soft tissue and the implant surface through transmembrane, cell adhesion structures called hemidesmosomes. For that purpose, we used a laminin-derived call adhesion peptide. However, the effect of different immobilization chemistries on cell adhesion peptide activity is vastly unexplored but likely critical. Here, we compared the physiochemical properties and biological responses of a hemidesmosome promoting peptide immobilized using silanization and copper-free click chemistry as a model system for cell adhesion peptides. Successful immobilization was confirmed with water contact angle and X-ray photoelectron spectroscopy. Peptide coatings were retained through 73 days of incubation in artificial saliva. Interestingly, the non-chemoselective immobilization route, silanization, resulted in significantly higher proliferation and hemidesmosome formation in oral keratinocytes compared to chemoselective click chemistry. Our results highlight that the most effective immobilization chemistry for optimal peptide activity is dependent on the specific system (substrate/peptide/cell/biological activity) under study. Overall, a better understanding of the effects immobilization chemistries have on cell adhesion peptide activity may lead to more efficacious coatings for biomedical devices.
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Affiliation(s)
- Nicholas G. Fischer
- Minnesota Dental Research Center for Biomaterials and Biomechanics, University of Minnesota, 515 Delaware Street S.E., Minneapolis, MN 55455, USA
| | - Jiahe He
- Minnesota Dental Research Center for Biomaterials and Biomechanics, University of Minnesota, 515 Delaware Street S.E., Minneapolis, MN 55455, USA
| | - Conrado Aparicio
- Minnesota Dental Research Center for Biomaterials and Biomechanics, University of Minnesota, 515 Delaware Street S.E., Minneapolis, MN 55455, USA
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50
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Rai S, Sharma N, Rai D. Structured water chains in external electric fields. Mol Phys 2020. [DOI: 10.1080/00268976.2019.1662957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Smita Rai
- Department of Physics, Sikkim University, Samdur, India
| | - Nayan Sharma
- Department of Physics, Sikkim University, Samdur, India
| | - Dhurba Rai
- Department of Physics, Sikkim University, Samdur, India
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