1
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Lu Z, Ge R, Zheng B, Zheng P. Enzymatic Protein Immobilization for Nanobody Array. Molecules 2024; 29:366. [PMID: 38257279 PMCID: PMC10820937 DOI: 10.3390/molecules29020366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 01/02/2024] [Accepted: 01/08/2024] [Indexed: 01/24/2024] Open
Abstract
Antibody arrays play a pivotal role in the detection and quantification of biomolecules, with their effectiveness largely dependent on efficient protein immobilization. Traditional methods often use heterobifunctional cross-linking reagents for attaching functional residues in proteins to corresponding chemical groups on the substrate surface. However, this method does not control the antibody's anchoring point and orientation, potentially leading to reduced binding efficiency and overall performance. Another method using anti-antibodies as intermediate molecules to control the orientation can be used but it demonstrates lower efficiency. Here, we demonstrate a site-specific protein immobilization strategy utilizing OaAEP1 (asparaginyl endopeptidase) for building a nanobody array. Moreover, we used a nanobody-targeting enhanced green fluorescent protein (eGFP) as the model system to validate the protein immobilization method for building a nanobody array. Finally, by rapidly enriching eGFP, this method further highlights its potential for rapid diagnostic applications. This approach, characterized by its simplicity, high efficiency, and specificity, offers an advancement in the development of surface-modified protein arrays. It promises to enhance the sensitivity and accuracy of biomolecule detection, paving the way for broader applications in various research and diagnostic fields.
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Affiliation(s)
| | | | | | - Peng Zheng
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China; (Z.L.); (R.G.); (B.Z.)
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2
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Guo Z, Zhuang C, Song Y, Yong J, Li Y, Guo Z, Kong B, Whitelock JM, Wang J, Liang K. Biocatalytic Buoyancy-Driven Nanobots for Autonomous Cell Recognition and Enrichment. NANO-MICRO LETTERS 2023; 15:236. [PMID: 37874411 PMCID: PMC10597912 DOI: 10.1007/s40820-023-01207-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 09/01/2023] [Indexed: 10/25/2023]
Abstract
Autonomously self-propelled nanoswimmers represent the next-generation nano-devices for bio- and environmental technology. However, current nanoswimmers generate limited energy output and can only move in short distances and duration, thus are struggling to be applied in practical challenges, such as living cell transportation. Here, we describe the construction of biodegradable metal-organic framework based nanobots with chemically driven buoyancy to achieve highly efficient, long-distance, directional vertical motion to "find-and-fetch" target cells. Nanobots surface-functionalized with antibodies against the cell surface marker carcinoembryonic antigen are exploited to impart the nanobots with specific cell targeting capacity to recognize and separate cancer cells. We demonstrate that the self-propelled motility of the nanobots can sufficiently transport the recognized cells autonomously, and the separated cells can be easily collected with a customized glass column, and finally regain their full metabolic potential after the separation. The utilization of nanobots with easy synthetic pathway shows considerable promise in cell recognition, separation, and enrichment.
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Affiliation(s)
- Ziyi Guo
- School of Chemical Engineering, Australian Centre for NanoMedicine, The University of New South Wales, Sydney, NSW, 2052, Australia
- Medical College, Northwest Minzu University, Lanzhou, 730000, People's Republic of China
| | - Chenchen Zhuang
- General Intensive Care Unit, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, People's Republic of China
| | - Yihang Song
- Medical College, Northwest Minzu University, Lanzhou, 730000, People's Republic of China
| | - Joel Yong
- School of Chemical Engineering, Australian Centre for NanoMedicine, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Yi Li
- School/Hospital of Stomatology, Lanzhou University, Lanzhou, 730000, People's Republic of China.
| | - Zhong Guo
- Medical College, Northwest Minzu University, Lanzhou, 730000, People's Republic of China.
| | - Biao Kong
- Department of Chemistry, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai, 200438, People's Republic of China
| | - John M Whitelock
- Graduate School of Biomedical Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Joseph Wang
- Department of Nanoengineering, University of California San Diego, La Jolla, CA, 92093, USA
| | - Kang Liang
- School of Chemical Engineering, Australian Centre for NanoMedicine, The University of New South Wales, Sydney, NSW, 2052, Australia.
- Graduate School of Biomedical Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia.
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3
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Vera CC, Borsarelli CD. Photo-induced protein modifications: a range of biological consequences and applications. Biophys Rev 2023; 15:569-576. [PMID: 37681095 PMCID: PMC10480124 DOI: 10.1007/s12551-023-01081-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 06/16/2023] [Indexed: 09/09/2023] Open
Abstract
Proteins are the most abundant biomolecules in living organisms and tissues and are also present in many natural and processed foods and beverages, as well as in pharmaceuticals and therapeutics. When exposed to UV-visible light, proteins containing endogenous or exogenous chromophores can undergo direct and indirect photochemical processes, resulting in protein modifications including oxidation of residues, cross-linking, proteolysis, covalent binding to molecules and interfaces, and conformational changes. When these modifications occur in an uncontrolled manner in a physiological context, they can lead to biological dysfunctions that ultimately result in cell death. However, rational design strategies involving light-activated protein modification have proven to be a valuable tool for the modulation of protein function or even for the construction of new biomaterials. This mini-review describes the fundamentals of photochemical processes in proteins and explores some of their emerging biomedical and nanobiotechnological applications, such as photodynamic therapy (PDT), photobonding for wound healing, photobioprinting, photoimmobilization of biosensors and enzymes for sensing, and biocatalysis, among others.
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Affiliation(s)
- Claudia Cecilia Vera
- Instituto de Bionanotecnología del NOA (INBIONATEC), CONICET. Universidad Nacional de Santiago del Estero (UNSE), RN 9, Km 1125, G4206XCP Santiago del Estero, Argentina
| | - Claudio Darío Borsarelli
- Instituto de Bionanotecnología del NOA (INBIONATEC), CONICET. Universidad Nacional de Santiago del Estero (UNSE), RN 9, Km 1125, G4206XCP Santiago del Estero, Argentina
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4
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Zhong X, Wei G, Liu B, Wang C, Wang J, Lu Y, Cui W, Guo H. Polyhedral Oligomeric Silsesquioxane-Based Nanoparticles for Efficient Chemotherapy of Glioblastoma. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2207248. [PMID: 36725316 DOI: 10.1002/smll.202207248] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 01/10/2023] [Indexed: 05/04/2023]
Abstract
Glioblastoma (GBM) is the most common lethal brain tumor with dismal treatment outcomes and poor response to chemotherapy. As the regulatory center of cytogenetics and metabolism, most tumor chemotherapeutic molecules exert therapeutic effects in the nucleus. Nanodrugs showing the nuclear aggregation effect are expected to eliminate and fundamentally suppress tumor cells. In this study, a nanodrug delivery system based on polyhedral oligomeric silsesquioxane (POSS) is introduced to deliver drugs into the nuclei of GBM cells, effectively enhancing the therapeutic efficacy of chemotherapy. The nanoparticles are modified with folic acid and iRGD peptides molecules to improve their tumor cell targeting and uptake via receptor-mediated endocytosis. Nuclear aggregation allows for the direct delivery of chemotherapeutic drug temozolomide (TMZ) to the tumor cell nuclei, resulting in more significant DNA damage and inhibition of tumor cell proliferation. Herein, TMZ-loaded POSS nanoparticles can significantly improve the survival of GBM-bearing mice. Therefore, the modified POSS nanoparticles may serve as a promising drug-loaded delivery platform to improve chemotherapy outcomes in GBM patients.
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Affiliation(s)
- Xiangyang Zhong
- Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, 510515, P. R. China
| | - Gang Wei
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
- Department of Radiology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
| | - Boyang Liu
- Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, 510515, P. R. China
| | - Chenyang Wang
- Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, 510515, P. R. China
| | - Juan Wang
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
| | - Yong Lu
- Department of Radiology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
| | - Wenguo Cui
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
| | - Hongbo Guo
- Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, 510515, P. R. China
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5
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Liu J, Li G, Wang P. Thiol-ene click synthesis of β-cyclodextrin-functionalized covalent organic framework-based magnetic nanocomposites (Fe3O4@COF@β-CD) for solid-phase extraction and determination of estrogens and estrogen mimics. Microchem J 2022. [DOI: 10.1016/j.microc.2021.106987] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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6
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Wu D, Yang K, Zhang Z, Feng Y, Rao L, Chen X, Yu G. Metal-free bioorthogonal click chemistry in cancer theranostics. Chem Soc Rev 2022; 51:1336-1376. [PMID: 35050284 DOI: 10.1039/d1cs00451d] [Citation(s) in RCA: 58] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Bioorthogonal chemistry is a powerful tool to site-specifically activate drugs in living systems. Bioorthogonal reactions between a pair of biologically reactive groups can rapidly and specifically take place in a mild physiological milieu without perturbing inherent biochemical processes. Attributed to their high selectivity and efficiency, bioorthogonal reactions can significantly decrease background signals in bioimaging. Compared with metal-catalyzed bioorthogonal click reactions, metal-free click reactions are more biocompatible without the metal catalyst-induced cytotoxicity. Although a great number of bioorthogonal chemistry-based strategies have been reported for cancer theranostics, a comprehensive review is scarce to highlight the advantages of these strategies. In this review, recent progress in cancer theranostics guided by metal-free bioorthogonal click chemistry will be depicted in detail. The elaborate design as well as the advantages of bioorthogonal chemistry in tumor theranostics are summarized and future prospects in this emerging field are emphasized.
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Affiliation(s)
- Dan Wu
- College of Materials Science and Engineering, Zhejiang University of Technology Hangzhou, 310014, P. R. China.
| | - Kuikun Yang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Avenida da Universidade, Taipa, Macau 999078, P. R. China
| | - Zhankui Zhang
- College of Materials Science and Engineering, Zhejiang University of Technology Hangzhou, 310014, P. R. China.
| | - Yunxuan Feng
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China.
| | - Lang Rao
- Institute of Biomedical Health Technology and Engineering, Shenzhen Bay Laboratory, Shenzhen 518132, P. R. China.
| | - Xiaoyuan Chen
- Yong Loo Lin School of Medicine and Faculty of Engineering, National University of Singapore, Singapore, 117597, Singapore.
| | - Guocan Yu
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China.
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7
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Kim HJ, Choi W, San Lee J, Choi J, Choi N, Hwang KS. Clinical application of serological Alzheimer's disease diagnosis using a highly sensitive biosensor with hydrogel-enhanced dielectrophoretic force. Biosens Bioelectron 2022; 195:113668. [PMID: 34583104 DOI: 10.1016/j.bios.2021.113668] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 09/21/2021] [Accepted: 09/22/2021] [Indexed: 12/12/2022]
Abstract
Analysis of a ratio between amyloid beta 1-40 and 1-42 (Aβ1-40 and Aβ1-42) presented in plasm enables a highly accurate diagnosis of Alzheimer's disease (AD). However, the analysis of plasma Aβs is not routinely conducted because of the lack of Aβ detection techniques sensitive enough to specifically detect Aβ from thousands of biomaterials present in the plasma. We developed a hydrogel-patterned spiral microelectrode sensor combined with a hopping dielectrophoretic (DEP) force, combining the negative DEP and positive DEP forces, for Aβ detection. The hydrogel effectively increased the number of immobilized fragmented antibodies in the reaction region of the sensor and enabled size-exclusive passive filtration of non-specific plasma proteins from that region. The hopping DEP force further concentrated the Aβs and removed the non-specific plasma proteins. Consequently, our sensor achieved a limit of detection (LOD) of approximately ∼ 0.15 pg/mL for both Aβ1-40 and Aβ1-42 in the standard plasma. Finally, comparing the ratio between Aβ1-40 and Aβ1-42 signals, we distinguished AD patients from cognitively normal subjects with 95.83% accuracy and 92.31% precision (n = 24, p < 0.0001, One-way ANOVA).
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Affiliation(s)
- Hye Jin Kim
- Department of Clinical Pharmacology and Therapeutics, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Woongsun Choi
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea; Department of Chemical and Biological Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Jin San Lee
- Department of Neurology, Kyung Hee University Hospital, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jungkyu Choi
- Department of Chemical and Biological Engineering, Korea University, Seoul, 02841, Republic of Korea.
| | - Nakwon Choi
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea; KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, South Korea; Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology (UST), Seoul, 02792, Republic of Korea.
| | - Kyo Seon Hwang
- Department of Clinical Pharmacology and Therapeutics, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea.
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8
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de Araujo AD, Nguyen HT, Fairlie DP. Late-Stage Hydrocarbon Conjugation and Cyclisation in Synthetic Peptides and Proteins. Chembiochem 2021; 22:1784-1789. [PMID: 33506598 DOI: 10.1002/cbic.202000796] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 01/07/2021] [Indexed: 12/26/2022]
Abstract
The conventional S-alkylation of cysteine relies upon using activated electrophiles. Here we demonstrate high-yielding and selective S-alkylation and S-lipidation of cysteines in unprotected synthetic peptides and proteins by using weak electrophiles and a Zn2+ promoter. Linear or branched iodoalkanes can S-alkylate cysteine in an unprotected 38-residue Myc peptide fragment and in a 91-residue miniprotein Omomyc, thus highlighting selective late-stage synthetic modifications. Metal-assisted cysteine alkylation is also effective for incorporating dehydroalanine into unprotected peptides and for peptide cyclisation via aliphatic thioether crosslinks, including customising macrocycles to stabilise helical peptides for enhanced uptake and delivery to proteins inside cells. Chemoselective and efficient late-stage Zn2+ -promoted cysteine alkylation in unprotected peptides and proteins promises many useful applications.
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Affiliation(s)
- Aline D de Araujo
- ARC Centre of Excellence for Innovations in Peptide and Protein Science, Division of Chemistry and Structural Biology, Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Huy T Nguyen
- ARC Centre of Excellence for Innovations in Peptide and Protein Science, Division of Chemistry and Structural Biology, Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - David P Fairlie
- ARC Centre of Excellence for Innovations in Peptide and Protein Science, Division of Chemistry and Structural Biology, Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
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9
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Das A, Thomas KRJ. Facile Thiol–Ene Click Protocol Using Benzil as Sensitizer and White LED as Light Source. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001275] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Anupam Das
- Organic Materials Laboratory Department of Chemistry Indian Institute of Technology Roorkee 247667 Roorkee – India
| | - K. R. Justin Thomas
- Organic Materials Laboratory Department of Chemistry Indian Institute of Technology Roorkee 247667 Roorkee – India
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10
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Smith S, Goodge K, Delaney M, Struzyk A, Tansey N, Frey M. A Comprehensive Review of the Covalent Immobilization of Biomolecules onto Electrospun Nanofibers. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E2142. [PMID: 33121181 PMCID: PMC7692479 DOI: 10.3390/nano10112142] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 10/20/2020] [Accepted: 10/21/2020] [Indexed: 01/08/2023]
Abstract
Biomolecule immobilization has attracted the attention of various fields such as fine chemistry and biomedicine for their use in several applications such as wastewater, immunosensors, biofuels, et cetera. The performance of immobilized biomolecules depends on the substrate and the immobilization method utilized. Electrospun nanofibers act as an excellent substrate for immobilization due to their large surface area to volume ratio and interconnectivity. While biomolecules can be immobilized using adsorption and encapsulation, covalent immobilization offers a way to permanently fix the material to the fiber surface resulting in high efficiency, good specificity, and excellent stability. This review aims to highlight the various covalent immobilization techniques being utilized and their benefits and drawbacks. These methods typically fall into two categories: (1) direct immobilization and (2) use of crosslinkers. Direct immobilization techniques are usually simple and utilize the strong electrophilic functional groups on the nanofiber. While crosslinkers are used as an intermediary between the nanofiber substrate and the biomolecule, with some crosslinkers being present in the final product and others simply facilitating the reactions. We aim to provide an explanation of each immobilization technique, biomolecules commonly paired with said technique and the benefit of immobilization over the free biomolecule.
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Affiliation(s)
- Soshana Smith
- Department of Fiber Science and Apparel Design, Cornell University, Ithaca, NY 14853, USA; (K.G.); (N.T.); (M.F.)
| | - Katarina Goodge
- Department of Fiber Science and Apparel Design, Cornell University, Ithaca, NY 14853, USA; (K.G.); (N.T.); (M.F.)
| | - Michael Delaney
- Robert Frederick Smith School of Chemical & Biomolecular Engineering, Cornell University, Ithaca, NY 14853, USA; (M.D.); (A.S.)
| | - Ariel Struzyk
- Robert Frederick Smith School of Chemical & Biomolecular Engineering, Cornell University, Ithaca, NY 14853, USA; (M.D.); (A.S.)
| | - Nicole Tansey
- Department of Fiber Science and Apparel Design, Cornell University, Ithaca, NY 14853, USA; (K.G.); (N.T.); (M.F.)
| | - Margaret Frey
- Department of Fiber Science and Apparel Design, Cornell University, Ithaca, NY 14853, USA; (K.G.); (N.T.); (M.F.)
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11
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An Easy Fabrication Method to Prepare Inexpensive UV–Cured Transparent Silicone Modified Polyacrylate Coatings with Good Adhesion and UV Resistance. COATINGS 2020. [DOI: 10.3390/coatings10070675] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
UV–curable polyacrylate is widely used in free–radical type UV–cure coating systems, the disadvantages of which including poor thermal stability and UV resistance can be overcome through chemical modification by silicone. However, it is a remarkable fact that the strategies for fabrication UV–cured silicone modified polyacrylates are somewhat complicated and the price of the products may be much expensive than pure UV–cured polyacrylates. In this work, an easy fabrication method to prepare inexpensive UV–cured transparent silicone modified polyacrylate coatings with good adhesion and UV resistance performance was developed from copolymers of acylates and thiol silicone resin by UV initiated thiol–ene click reaction without UV initiator. The striking results with a high application value should be emphasized that when the amount of thiol silicone resin is only one wt.% of the copolymer of acrylates, the UV–cured coatings obtained exhibit fairly good performance. These coatings prepared exhibit transparency higher than 96% (800 nm), adhesion property to glass slides can reach grade 0, pencil hardness can reach 6H, water absorption is less than 0.16%. In particular, it is observed obviously that the silicone modified polyacrylate coatings exhibit better UV resistance performance than the coating prepared with only copolymers of acrylates initiated by UV initiator 1173. It is proved that it is actually an easy fabrication method to prepare inexpensive UV–cured transparent silicone modified polyacrylate coatings with high performance by UV initiated thiol–ene click reaction of copolymers of acylates and thiol silicone resin.
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12
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Della Ventura B, Banchelli M, Funari R, Illiano A, De Angelis M, Taroni P, Amoresano A, Matteini P, Velotta R. Biosensor surface functionalization by a simple photochemical immobilization of antibodies: experimental characterization by mass spectrometry and surface enhanced Raman spectroscopy. Analyst 2020; 144:6871-6880. [PMID: 31686068 DOI: 10.1039/c9an00443b] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Surface functionalization is a key step in biosensing since it is the basis of an effective analyte recognition. Among all the bioreceptors, antibodies (Abs) play a key role thanks to their superior specificity, although the available immobilization strategies suffer from several drawbacks. When gold is the interacting surface, the recently introduced Photochemical Immobilization Technique (PIT) has been shown to be a quick, easy-to-use and very effective method to tether Abs oriented upright by means of thiols produced via tryptophan mediated disulphide bridge reduction. Although the molecular mechanism of this process is quite well identified, the detailed morphology of the immobilized antibodies is still elusive due to inherent difficulties related to the microscopy imaging of Abs. The combination of Mass Spectrometry, Surface-Enhanced Raman Spectroscopy and Ellman's assay demonstrates that Abs irradiated under the conditions in which PIT is realized show only two effective disulphide bridges available for binding. They are located in the constant region of the immunoglobulin light chain so that the most likely position Ab assumes is side-on, i.e. with one Fab (i.e. the antigen binding portion of the antibody) exposed to the solution. This is not a limitation of the recognition efficiency in view of the intrinsic flexibility of the Ab structure, which makes the free Fab able to sway in the solution, a feature of great importance in many biosensing applications.
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Affiliation(s)
- Bartolomeo Della Ventura
- Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 - Milano, Italy
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13
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Wu Y, Liu J, Jiao X, Cheng F, Lai G, Yang X. UV-Cured Transparent Flexible Silicone Materials with High Tensile Strength. ACS OMEGA 2020; 5:6199-6206. [PMID: 32226905 PMCID: PMC7098052 DOI: 10.1021/acsomega.0c00401] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 03/03/2020] [Indexed: 05/09/2023]
Abstract
Transparent flexible silicone materials are useful in electronics, sensors, coatings, and so forth. However, to the best of our knowledge, the tensile strength of unreinforced silicone rubber is lower than 0.4 MPa, and the highest tensile strength of highly transparent silicone-modified materials is no more than 1.5 MPa. The poor mechanical property limits their further application in electronic devices. Here, a kind of UV-cured transparent flexible silicone materials with tensile strength as high as 2.2 MPa were prepared by a UV-initiated thiol-ene reaction of a sulfur-containing hyperbranched polycarbosilane and a thiol silicone resin. Interestingly, their tensile strength can increase from 2.2 to 5.6 and 5.7 MPa after being immersed in an aqueous solution of 10 wt % hydrochloric acid and 10 wt % NaCl for 7 days, respectively. It is argued that the increase of the tensile strength of cured films may be attributed to the -SiOCH3 of the residual 3-trimethoxysilylpropanethiol in the sulfur-containing hyperbranched polycarbosilane. The performances of the cured materials were investigated in detail. These silicone materials exhibit transparency higher than 95% (wavenumber in the range of 400-800 nm), and the initial thermal decomposition temperatures of the cured materials are about 340 °C. These materials also show good anticorrosion property, and the mass loss of the materials immersed in the aqueous solution mediums is no more than 0.39 wt % even for 15 days.
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Affiliation(s)
- Yufei Wu
- Key
Laboratory of Organosilicon Chemistry and Material Technology of Education
Ministry, Hangzhou Normal University, Hangzhou 311121, China
| | - Jiangling Liu
- Key
Laboratory of Organosilicon Chemistry and Material Technology of Education
Ministry, Hangzhou Normal University, Hangzhou 311121, China
| | - Xiaojiao Jiao
- Key
Laboratory of Organosilicon Chemistry and Material Technology of Education
Ministry, Hangzhou Normal University, Hangzhou 311121, China
| | - Fei Cheng
- Key
Laboratory of Organosilicon Chemistry and Material Technology of Education
Ministry, Hangzhou Normal University, Hangzhou 311121, China
| | - Guoqiao Lai
- Key
Laboratory of Organosilicon Chemistry and Material Technology of Education
Ministry, Hangzhou Normal University, Hangzhou 311121, China
| | - Xiongfa Yang
- Key
Laboratory of Organosilicon Chemistry and Material Technology of Education
Ministry, Hangzhou Normal University, Hangzhou 311121, China
- Collaborative
Innovation Center for Fluorosilicon Fine Chemicals and Materials Manufacturing
of Zhejiang Province, Hangzhou 311121, China
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14
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Munar I, Fındık V, Degirmenci I, Aviyente V. Solvent Effects on Thiol–Ene Kinetics and Reactivity of Carbon and Sulfur Radicals. J Phys Chem A 2020; 124:2580-2590. [DOI: 10.1021/acs.jpca.9b10165] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ipek Munar
- Department of Chemistry, Faculty of Arts and Sciences, Bogazici University, Bebek, 34342, Istanbul, Turkey
| | - Volkan Fındık
- Department of Chemistry, Faculty of Arts and Sciences, Marmara University, 34722 Istanbul, Turkey
| | - Isa Degirmenci
- Chemical Engineering Department, Ondokuz Mayıs University, 55139 Samsun, Turkey
| | - Viktorya Aviyente
- Department of Chemistry, Faculty of Arts and Sciences, Bogazici University, Bebek, 34342, Istanbul, Turkey
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15
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Abstract
Shear-thinning hydrogels that utilize thiol-Michael chain-extension and free radical polymerization have a tunable stretchability.
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Affiliation(s)
- Dylan Karis
- Department of Chemistry
- University of Washington
- Seattle
- USA
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16
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Li MJ, Wang HJ, Yuan R, Chai YQ. A zirconium-based metal-organic framework sensitized by thioflavin-T for sensitive photoelectrochemical detection of C-reactive protein. Chem Commun (Camb) 2019; 55:10772-10775. [PMID: 31432820 DOI: 10.1039/c9cc05086h] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Herein, a novel photoelectrochemical (PEC) assay was developed for the sensitive detection of C-reactive protein (CRP) based on a zirconium-based metal-organic framework (PCN-777) as the photoelectric material and thioflavin-T (Th-T) as the effective signal sensitizer coupled with rolling circle amplification (RCA).
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Affiliation(s)
- Meng-Jie Li
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China.
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17
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Díaz-Betancor Z, Bañuls MJ, Maquieira Á. Photoclick chemistry to create dextran-based nucleic acid microarrays. Anal Bioanal Chem 2019; 411:6745-6754. [PMID: 31482291 DOI: 10.1007/s00216-019-02050-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 07/22/2019] [Accepted: 07/24/2019] [Indexed: 11/29/2022]
Abstract
In the literature, there are reports of the utilization of various hydrogels to create generic platforms for protein microarray applications. Here, a novel strategy was developed to obtain high-performance microarrays. In it, a dextran hydrogel is used to covalently immobilize oligonucleotides and proteins. This method employs aqueous solutions of dextran methacrylate (Dx-MA), which is a biocompatible photopolymerizable monomer. Capture probes are immobilized inside the hydrogel via a light-induced thiol-acrylate coupling reaction at the same time as the dextran polymer is formed. Hydrogel microarrays based on this technique were prepared on different surfaces, such as a Blu-ray Disk and polycarbonate or alkene-functionalized glass slides, and these systems showed high probe-loading capabilities and good biorecognition yields. This methodology presents advantages such as a low cost, a short analysis time, a low limit of detection, and multiplexing capabilities, among others. Confocal fluorescence microscopy analysis demonstrated that in these hydrogel-based microarrays, receptor immobilization and the biorecognition event occurred within the hydrogel and not merely on the surface.
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Affiliation(s)
- Zeneida Díaz-Betancor
- IDM, Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico, Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - María-José Bañuls
- IDM, Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico, Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022, Valencia, Spain. .,Departamento de Química, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain.
| | - Ángel Maquieira
- IDM, Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico, Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022, Valencia, Spain.,Departamento de Química, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
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18
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Phosphorylcholine-based hydrogel for immobilization of biomolecules. Application to fluorometric microarrays for use in hybridization assays and immunoassays, and nanophotonic biosensing. Mikrochim Acta 2019; 186:570. [DOI: 10.1007/s00604-019-3691-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 07/07/2019] [Indexed: 12/11/2022]
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19
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Jiménez-Meneses P, Bañuls MJ, Puchades R, Maquieira Á. Novel and rapid activation of polyvinylidene fluoride membranes by UV light. REACT FUNCT POLYM 2019. [DOI: 10.1016/j.reactfunctpolym.2019.04.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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20
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Bañuls MJ, González-Martínez MÁ, Sabek J, García-Rupérez J, Maquieira Á. Thiol-click photochemistry for surface functionalization applied to optical biosensing. Anal Chim Acta 2019; 1060:103-113. [DOI: 10.1016/j.aca.2019.01.055] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 01/18/2019] [Accepted: 01/27/2019] [Indexed: 10/27/2022]
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21
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Sabek J, Díaz-Fernández FJ, Torrijos-Morán L, Díaz-Betancor Z, Maquieira Á, Bañuls MJ, Pinilla-Cienfuegos E, García-Rupérez J. Experimental study of an evanescent-field biosensor based on 1D photonic bandgap structures. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2019; 10:967-974. [PMID: 31165023 PMCID: PMC6541322 DOI: 10.3762/bjnano.10.97] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Accepted: 04/18/2019] [Indexed: 05/03/2023]
Abstract
A photonic bandgap (PBG) biosensor has been developed for the label-free detection of proteins. As the sensing in this type of structures is governed by the interaction between the evanescent field going into the cladding and the target analytes, scanning near-field optical microscopy has been used to characterize the profile of that evanescent field. The study confirms the strong exponential decrease of the signal as it goes into the cladding. This means that biorecognition events must occur as close to the PBG structure surface as possible in order to obtain the maximum sensing response. Within this context, the PBG biosensor has been biofunctionalized with half-antibodies specific to bovine serum albumin (BSA) using a UV-induced immobilization procedure. The use of half-antibodies allows one to reduce the thickness of the biorecognition volume down to ca. 2.5 nm, thus leading to a higher interaction with the evanescent field, as well as a proper orientation of their binding sites towards the target sample. Then, the biofunctionalized PBG biosensor has been used to perform a direct and real-time detection of the target BSA antigen.
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Affiliation(s)
- Jad Sabek
- Nanophotonics Technology Center, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
| | | | - Luis Torrijos-Morán
- Nanophotonics Technology Center, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
| | - Zeneida Díaz-Betancor
- Departamento de Química, Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico IDM, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
| | - Ángel Maquieira
- Departamento de Química, Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico IDM, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
| | - María-José Bañuls
- Departamento de Química, Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico IDM, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
| | - Elena Pinilla-Cienfuegos
- Nanophotonics Technology Center, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
| | - Jaime García-Rupérez
- Nanophotonics Technology Center, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
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22
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Sabek J, Torrijos-Morán L, Griol A, Díaz Betancor Z, Bañuls Polo MJ, Maquieira Á, García-Rupérez J. Real Time Monitoring of a UV Light-Assisted Biofunctionalization Protocol Using a Nanophotonic Biosensor. BIOSENSORS-BASEL 2018; 9:bios9010006. [PMID: 30598030 PMCID: PMC6468802 DOI: 10.3390/bios9010006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Revised: 12/12/2018] [Accepted: 12/24/2018] [Indexed: 12/27/2022]
Abstract
A protocol for the covalent biofunctionalization of silicon-based biosensors using a UV light-induced thiol–ene coupling (TEC) reaction has been developed. This biofunctionalization approach has been used to immobilize half antibodies (hIgG), which have been obtained by means of a tris(2-carboxyethyl)phosphine (TCEP) reduction at the hinge region, to the surface of a vinyl-activated silicon-on-insulator (SOI) nanophotonic sensing chip. The response of the sensing structures within the nanophotonic chip was monitored in real time during the biofunctionalization process, which has allowed us to confirm that the bioconjugation of the thiol-terminated bioreceptors onto the vinyl-activated sensing surface is only initiated upon UV light photocatalysis.
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Affiliation(s)
- Jad Sabek
- Nanophotonics Technology Center, Universitat Politècnica de València, Camí de Vera s/n, 46022 Valencia, Spain.
| | - Luis Torrijos-Morán
- Nanophotonics Technology Center, Universitat Politècnica de València, Camí de Vera s/n, 46022 Valencia, Spain.
| | - Amadeu Griol
- Nanophotonics Technology Center, Universitat Politècnica de València, Camí de Vera s/n, 46022 Valencia, Spain.
| | - Zeneida Díaz Betancor
- Departamento de Química, Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico IDM, Universitat Politècnica de València, Camí de Vera s/n, 46022 Valencia, Spain.
| | - María-José Bañuls Polo
- Departamento de Química, Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico IDM, Universitat Politècnica de València, Camí de Vera s/n, 46022 Valencia, Spain.
| | - Ángel Maquieira
- Departamento de Química, Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico IDM, Universitat Politècnica de València, Camí de Vera s/n, 46022 Valencia, Spain.
| | - Jaime García-Rupérez
- Nanophotonics Technology Center, Universitat Politècnica de València, Camí de Vera s/n, 46022 Valencia, Spain.
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23
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Sinha AK, Equbal D. Thiol−Ene Reaction: Synthetic Aspects and Mechanistic Studies of an Anti-Markovnikov-Selective Hydrothiolation of Olefins. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800639] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Arun K. Sinha
- Medicinal and Process Chemistry Division; C.S.I.R.-Central Drug Research Institute; Council of Scientific and Industrial Research); Lucknow- 226021 (U.P.) India
- Academy of Scientific and Innovative Research (AcSIR); Postal Staff College Area, Sector 19; Kamla Nehru Nagar; Ghaziabad, Uttar Pradesh- 201002
| | - Danish Equbal
- Medicinal and Process Chemistry Division; C.S.I.R.-Central Drug Research Institute; Council of Scientific and Industrial Research); Lucknow- 226021 (U.P.) India
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