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Wang C, Wang T, Gao Y, Tao Q, Ye W, Jia Y, Zhao X, Zhang B, Zhang Z. Multiplexed immunosensing of cancer biomarkers on a split-float-gate graphene transistor microfluidic biochip. LAB ON A CHIP 2024; 24:317-326. [PMID: 38087953 DOI: 10.1039/d3lc00709j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
This work reports the development of a novel microfluidic biosensor using a graphene field-effect transistor (GFET) design for the parallel label-free analysis of multiple biomarkers. Overcoming the persistent challenge of constructing μm2-sized FET sensitive interfaces that incorporate multiple receptors, we implement a split-float-gate structure that enables the manipulation of multiplexed biochemical functionalization using microfluidic channels. Immunoaffinity biosensing experiments are conducted using the mixture samples containing three liver cancer biomarkers, carcinoembryonic antigen (CEA), α-fetoprotein (AFP), and parathyroid hormone (PTH). The results demonstrate the capability of our label-free biochip to quantitatively detect multiple target biomarkers simultaneously by observing the kinetics in 10 minutes, with the detection limit levels in the nanomolar range. This microfluidic biosensor provides a valuable analytical tool for rapid multi-target biosensing, which can be potentially utilized for domiciliary tests of cancer screening and prognosis, obviating the need for sophisticated instruments and professional operations in hospitals.
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Affiliation(s)
- Cheng Wang
- Tianjin Key Laboratory of Wireless Mobile Communications and Power Transmission, College of Electronic and Communication Engineering, Tianjin Normal University, Tianjin 300387, China.
- Department of Intelligence Science and Technology, College of Artificial Intelligence, Tianjin Normal University, Tianjin 300387, China
| | - Tao Wang
- Tianjin Key Laboratory of Wireless Mobile Communications and Power Transmission, College of Electronic and Communication Engineering, Tianjin Normal University, Tianjin 300387, China.
- Department of Communication Engineering, College of Electronic and Communication Engineering, Tianjin Normal University, Tianjin 300387, China
| | - Yujing Gao
- Tianjin Key Laboratory of Wireless Mobile Communications and Power Transmission, College of Electronic and Communication Engineering, Tianjin Normal University, Tianjin 300387, China.
- Department of Intelligence Science and Technology, College of Artificial Intelligence, Tianjin Normal University, Tianjin 300387, China
| | - Qiya Tao
- Tianjin Key Laboratory of Wireless Mobile Communications and Power Transmission, College of Electronic and Communication Engineering, Tianjin Normal University, Tianjin 300387, China.
- Department of Communication Engineering, College of Electronic and Communication Engineering, Tianjin Normal University, Tianjin 300387, China
| | - Weixiang Ye
- Center for Theoretical Physics, Hainan University, Haikou 570228, China.
- Department of Physics, School of Physical Science and Optoelectrical Engineering, Hainan University, Haikou 570228, China
| | - Yuan Jia
- Industrialization Center of Micro/Nano ICs and Devices, Sino-German College of Intelligent Manufacturing, Shenzhen Technology University, Shenzhen 518118, China.
| | - Xiaonan Zhao
- Tianjin Key Laboratory of Wireless Mobile Communications and Power Transmission, College of Electronic and Communication Engineering, Tianjin Normal University, Tianjin 300387, China.
- Department of Communication Engineering, College of Electronic and Communication Engineering, Tianjin Normal University, Tianjin 300387, China
| | - Bo Zhang
- Tianjin Key Laboratory of Wireless Mobile Communications and Power Transmission, College of Electronic and Communication Engineering, Tianjin Normal University, Tianjin 300387, China.
- Department of Communication Engineering, College of Electronic and Communication Engineering, Tianjin Normal University, Tianjin 300387, China
| | - Zhixing Zhang
- Industrialization Center of Micro/Nano ICs and Devices, Sino-German College of Intelligent Manufacturing, Shenzhen Technology University, Shenzhen 518118, China.
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Lan K, Liu S, Wang Z, Long L, Qin G. High-performance pyramid-SiNWs biosensor for NH 3gas detection. NANOTECHNOLOGY 2023; 35:105501. [PMID: 38055986 DOI: 10.1088/1361-6528/ad12eb] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 12/05/2023] [Indexed: 12/08/2023]
Abstract
NH3is widely existed in the environment and is closely associated with various health issues. Additionally, detecting the small amounts of NH3exhaled by patients with liver and kidney diseases offers potential opportunities for painless early disease diagnosis. Therefore, there is an urgent need for a convenient, rapid, and highly sensitive real-time NH3monitoring method. This work presents a high-performance NH3sensor based on olfactory receptor-derived peptides (ORPs) on a pyramid silicon nanowires (SiNWs) structure substrate. First, we successfully fabricated the pyramid-SiNWs structure on a silicon substrate using a chemical etching method. Subsequently, by dehydrative condensation reaction between the amino groups on APTES and the carboxyl groups of ORPs, ORPs were successfully immobilized onto the pyramid-SiNWs structure. This methodology allows the ORPs sensor on the pyramid-SiNWs substrate to detect NH3as low as 1 ppb, which was the reported lowest limit of detection, with a higher response rate compared to ORPs sensors on flat SiNWs substrates. The sensors also exhibit good sensitivity and stability for NH3gas detection. The results show the feasibility and potential applications of ORPs-pyramid-SiNWs structure sensors, in the fields of food safety, disease monitoring, and environmental protection, etc.
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Affiliation(s)
- Kuibo Lan
- School of Microelectronics, Tianjin University, Tianjin, 300072, People's Republic of China
- Tianjin Key Laboratory of Imaging and Sensing Microelectronic Technology, Tianjin, 300072, People's Republic of China
| | - Shuaiyan Liu
- School of Microelectronics, Tianjin University, Tianjin, 300072, People's Republic of China
| | - Zhi Wang
- School of Microelectronics, Tianjin University, Tianjin, 300072, People's Republic of China
- Tianjin Key Laboratory of Imaging and Sensing Microelectronic Technology, Tianjin, 300072, People's Republic of China
| | - Lixia Long
- School of Materials Science and Engineering, Tianjin University, Tianjin 300072, People's Republic of China
| | - Guoxuan Qin
- School of Microelectronics, Tianjin University, Tianjin, 300072, People's Republic of China
- Tianjin Key Laboratory of Imaging and Sensing Microelectronic Technology, Tianjin, 300072, People's Republic of China
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3
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Lekbach Y, Ueki T, Liu X, Woodard T, Yao J, Lovley DR. Microbial nanowires with genetically modified peptide ligands to sustainably fabricate electronic sensing devices. Biosens Bioelectron 2023; 226:115147. [PMID: 36804664 DOI: 10.1016/j.bios.2023.115147] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 01/23/2023] [Accepted: 02/08/2023] [Indexed: 02/11/2023]
Abstract
Nanowires have substantial potential as the sensor component in electronic sensing devices. However, surface functionalization of traditional nanowire and nanotube materials with short peptides that increase sensor selectivity and sensitivity requires complex chemistries with toxic reagents. In contrast, microorganisms can assemble pilin monomers into protein nanowires with intrinsic conductivity from renewable feedstocks, yielding an electronic material that is robust and stable in applications, but also biodegradable. Here we report that the sensitivity and selectivity of protein nanowire-based sensors can be modified with a simple plug and play genetic approach in which a short peptide sequence, designed to bind the analyte of interest, is incorporated into the pilin protein that is microbially assembled into nanowires. We employed a scalable Escherichia coli chassis to fabricate protein nanowires that displayed either a peptide previously demonstrated to effectively bind ammonia, or a peptide known to bind acetic acid. Sensors comprised of thin films of the nanowires amended with the ammonia-specific peptide had a ca. 100-fold greater response to ammonia than sensors made with unmodified protein nanowires. Protein nanowires with the peptide that binds acetic acid yielded a 4-fold higher response than nanowires without the peptide. The protein nanowire-based sensors had greater responses than previously reported sensors fabricated with other nanomaterials. The results demonstrate that protein nanowires with enhanced sensor response for analytes of interest can be fabricated with a flexible genetic strategy that sustainably eliminates the energy, environmental, and health concerns associated with other common nanomaterials.
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Affiliation(s)
- Yassir Lekbach
- Department of Microbiology, University of Massachusetts, Amherst, MA, 01003, USA
| | - Toshiyuki Ueki
- Department of Microbiology, University of Massachusetts, Amherst, MA, 01003, USA
| | - Xiaomeng Liu
- Department of Electrical and Computer Engineering University of Massachusetts, Amherst, MA, 01003, USA
| | - Trevor Woodard
- Department of Microbiology, University of Massachusetts, Amherst, MA, 01003, USA
| | - Jun Yao
- Department of Electrical and Computer Engineering University of Massachusetts, Amherst, MA, 01003, USA; Institute for Applied Life Sciences (IALS),University of Massachusetts, Amherst, MA, 01003, USA; Department of Biomedical Engineering, University of Massachusetts, Amherst, MA, 01003, USA
| | - Derek R Lovley
- Department of Microbiology, University of Massachusetts, Amherst, MA, 01003, USA; Institute for Applied Life Sciences (IALS),University of Massachusetts, Amherst, MA, 01003, USA.
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4
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Su R, Wang F, McAlpine MC. 3D printed microfluidics: advances in strategies, integration, and applications. LAB ON A CHIP 2023; 23:1279-1299. [PMID: 36779387 DOI: 10.1039/d2lc01177h] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The ability to construct multiplexed micro-systems for fluid regulation could substantially impact multiple fields, including chemistry, biology, biomedicine, tissue engineering, and soft robotics, among others. 3D printing is gaining traction as a compelling approach to fabricating microfluidic devices by providing unique capabilities, such as 1) rapid design iteration and prototyping, 2) the potential for automated manufacturing and alignment, 3) the incorporation of numerous classes of materials within a single platform, and 4) the integration of 3D microstructures with prefabricated devices, sensing arrays, and nonplanar substrates. However, to widely deploy 3D printed microfluidics at research and commercial scales, critical issues related to printing factors, device integration strategies, and incorporation of multiple functionalities require further development and optimization. In this review, we summarize important figures of merit of 3D printed microfluidics and inspect recent progress in the field, including ink properties, structural resolutions, and hierarchical levels of integration with functional platforms. Particularly, we highlight advances in microfluidic devices printed with thermosetting elastomers, printing methodologies with enhanced degrees of automation and resolution, and the direct printing of microfluidics on various 3D surfaces. The substantial progress in the performance and multifunctionality of 3D printed microfluidics suggests a rapidly approaching era in which these versatile devices could be untethered from microfabrication facilities and created on demand by users in arbitrary settings with minimal prior training.
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Affiliation(s)
- Ruitao Su
- School of Mechanical and Power Engineering, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan 450001, China
| | - Fujun Wang
- Department of Mechanical Engineering, University of Minnesota, 111 Church Street SE, Minneapolis, MN 55455, USA.
| | - Michael C McAlpine
- Department of Mechanical Engineering, University of Minnesota, 111 Church Street SE, Minneapolis, MN 55455, USA.
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5
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Layouni R, Cao T, Coppock MB, Laibinis PE, Weiss SM. Peptide-Based Capture of Chikungunya Virus E2 Protein Using Porous Silicon Biosensor. SENSORS (BASEL, SWITZERLAND) 2021; 21:8248. [PMID: 34960341 PMCID: PMC8708774 DOI: 10.3390/s21248248] [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: 11/09/2021] [Revised: 12/02/2021] [Accepted: 12/08/2021] [Indexed: 12/04/2022]
Abstract
The detection of pathogens presents specific challenges in ensuring that biosensors remain operable despite exposure to elevated temperatures or other extreme conditions. The most vulnerable component of a biosensor is typically the bioreceptor. Accordingly, the robustness of peptides as bioreceptors offers improved stability and reliability toward harsh environments compared to monoclonal antibodies that may lose their ability to bind target molecules after such exposures. Here, we demonstrate peptide-based capture of the Chikungunya virus E2 protein in a porous silicon microcavity biosensor at room temperature and after exposure of the peptide-functionalized biosensor to high temperature. Contact angle measurements, attenuated total reflectance-Fourier transform infrared spectra, and optical reflectance measurements confirm peptide functionalization and selective E2 protein capture. This work opens the door for other pathogenic biomarker detection using peptide-based capture agents on porous silicon and other surface-based sensor platforms.
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Affiliation(s)
- Rabeb Layouni
- Department of Chemical & Biomolecular Engineering, Vanderbilt University, Nashville, TN 37235, USA; (R.L.); (P.E.L.)
| | - Tengfei Cao
- Interdisciplinary Material Science Program, Vanderbilt University, Nashville, TN 37235, USA;
| | - Matthew B. Coppock
- Human Research and Engineering Directorate, DEVCOM Army Research Laboratory, Adelphi, MD 20783, USA;
| | - Paul E. Laibinis
- Department of Chemical & Biomolecular Engineering, Vanderbilt University, Nashville, TN 37235, USA; (R.L.); (P.E.L.)
- Interdisciplinary Material Science Program, Vanderbilt University, Nashville, TN 37235, USA;
| | - Sharon M. Weiss
- Interdisciplinary Material Science Program, Vanderbilt University, Nashville, TN 37235, USA;
- Department of Electrical and Computer Engineering, Vanderbilt University, Nashville, TN 37235, USA
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6
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Mascini M, Dikici E, Perez-Erviti JA, Deo SK, Compagnone D, Daunert S. A new class of sensing elements for sensors: Clamp peptides for Zika virus. Biosens Bioelectron 2021; 191:113471. [PMID: 34246123 DOI: 10.1016/j.bios.2021.113471] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 05/25/2021] [Accepted: 06/28/2021] [Indexed: 12/20/2022]
Abstract
The design of a new class of selective and high affinity antibody mimetics termed clamp peptide (CP) that incorporate three short peptides structurally and mechanically mimicking a clamp is proposed as sensing elements for a reliable detection sensor platform. The CPs consist of two short peptides functioning as arms that recognize two different epitopes in the target protein and are connected by a third short peptide that acts as a hinge between the peptide arms. For the construction of CPs, we employed a rational design combined with computational methods. To illustrate our approach, we designed a CP that binds selectively to the envelope protein of the Zika virus (ZIKV). The virtual docking cycles were run maximizing the discrimination between ZIKV and Dengue virus (DENV) envelope proteins. DENV was chosen among the flavivirus family because it has high structural similarity with ZIKV. When employed in a colorimetric binding assay or in label-free electrochemical impedance sensor format, the CP was selective for ZIKV vs DENV particles showing detection limit under 104 copies/mL, comparable to anti-ZIKV antibodies. Apparent dissociation binding constants (Kd) confirmed a better performance of CPs than mono-arm peptides (Kd of best CP = 162 nM ± 23 nM; Kd of best mono-arm peptide = 11.15 ± 2.76 μM). The performance of the assays based on CPs was also verified in serum and urine (diluted 1:10 and 1:1 respectively). The detection limits of CPs decreased about one order of magnitude for ZIKV detection in serum or urine, with a distinct analytical signal starting from 105 copies/mL of ZIKV.
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Affiliation(s)
- Marcello Mascini
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, 64100, Teramo, Italy; Department of Analytical Chemistry, Faculty of Chemistry, University Complutense of Madrid, Ciudad Universitaria S/n, 28040, Madrid, Spain.
| | - Emre Dikici
- Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, Miami, FL, 33136, United States; Dr. JT Macdonald Foundation Biomedical Nanotechnology Institute, University of Miami, Miami, FL, 33136, United States
| | - Julio A Perez-Erviti
- Center for Protein Studies, Faculty of Biology, University of Havana, La Havana, 10400, Cuba
| | - Sapna K Deo
- Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, Miami, FL, 33136, United States; Dr. JT Macdonald Foundation Biomedical Nanotechnology Institute, University of Miami, Miami, FL, 33136, United States
| | - Dario Compagnone
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, 64100, Teramo, Italy
| | - Sylvia Daunert
- Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, Miami, FL, 33136, United States; Dr. JT Macdonald Foundation Biomedical Nanotechnology Institute, University of Miami, Miami, FL, 33136, United States; University of Miami Clinical and Translational Science Institute, University of Miami, Miami, FL, 33136, United States.
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7
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Electrochemiluminescence sensor based on cyclic peptides-recognition and Au nanoparticles assisted graphitic carbon nitride for glucose determination. Mikrochim Acta 2021; 188:151. [PMID: 33813618 DOI: 10.1007/s00604-021-04797-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 03/18/2021] [Indexed: 01/16/2023]
Abstract
A glucose (Glu) sensor was designed by introducing synthetic cyclic peptides (CPs) as recognition receptors and Au nanoparticles assisted graphitic carbon nitride (AuNPs/g-C3N4) for electrochemiluminescence (ECL) enhancement. The synthetic CP receptor (cyclo-[-CNDNHCRDNDC-]) with natural active center of Glu binding protein can mimic the interactions between Glu and Glu binding protein to specifically capture Glu. The AuNPs were reduced on g-C3N4 and formed a new nanohybrid that can be applied as an ECL emitter. The AuNPs/g-C3N4 effectively ameliorated the ECL response of bare g-C3N4. The ECL enhancement mechanism was theoretically speculated through computer simulation. Glu quantification was conducted by recording ECL shifts induced by the binding of Glu to CPs. The linear detection range of the fabricated CPs-based ECL sensor was 1 to 100 mmol L-1, and the detection limit (LOD) was 0.57 nmol L-1 (S / N = 3). The CP-based ECL sensor also showed good specificity, repeatability, stability, and favorable recoveries in sample analysis. This work offer a promising analytical method for Glu assay in clinical diagnostics and bioprocess monitoring.
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8
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Su R, Wen J, Su Q, Wiederoder MS, Koester SJ, Uzarski JR, McAlpine MC. 3D printed self-supporting elastomeric structures for multifunctional microfluidics. SCIENCE ADVANCES 2020; 6:6/41/eabc9846. [PMID: 33036980 PMCID: PMC7546717 DOI: 10.1126/sciadv.abc9846] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 08/26/2020] [Indexed: 05/12/2023]
Abstract
Microfluidic devices fabricated via soft lithography have demonstrated compelling applications such as lab-on-a-chip diagnostics, DNA microarrays, and cell-based assays. These technologies could be further developed by directly integrating microfluidics with electronic sensors and curvilinear substrates as well as improved automation for higher throughput. Current additive manufacturing methods, such as stereolithography and multi-jet printing, tend to contaminate substrates with uncured resins or supporting materials during printing. Here, we present a printing methodology based on precisely extruding viscoelastic inks into self-supporting microchannels and chambers without requiring sacrificial materials. We demonstrate that, in the submillimeter regime, the yield strength of the as-extruded silicone ink is sufficient to prevent creep within a certain angular range. Printing toolpaths are specifically designed to realize leakage-free connections between channels and chambers, T-shaped intersections, and overlapping channels. The self-supporting microfluidic structures enable the automatable fabrication of multifunctional devices, including multimaterial mixers, microfluidic-integrated sensors, automation components, and 3D microfluidics.
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Affiliation(s)
- Ruitao Su
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN 55455, USA
| | - Jiaxuan Wen
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, USA
| | - Qun Su
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, USA
| | - Michael S Wiederoder
- U.S. Army Combat Capabilities Development Command Soldier Center, Natick, MA 01760, USA
| | - Steven J Koester
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, USA
| | - Joshua R Uzarski
- U.S. Army Combat Capabilities Development Command Soldier Center, Natick, MA 01760, USA
| | - Michael C McAlpine
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN 55455, USA.
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9
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Liu X, Zhang Q, Knoll W, Liedberg B, Wang Y. Rational Design of Functional Peptide-Gold Hybrid Nanomaterials for Molecular Interactions. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2000866. [PMID: 32743897 DOI: 10.1002/adma.202000866] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 05/21/2020] [Indexed: 05/12/2023]
Abstract
Gold nanoparticles (AuNPs) have been extensively used for decades in biosensing-related development due to outstanding optical properties. Peptides, as newly realized functional biomolecules, are promising candidates of replacing antibodies, receptors, and substrates for specific molecular interactions. Both peptides and AuNPs are robust and easily synthesized at relatively low cost. Hence, peptide-AuNP-based bio-nano-technological approaches have drawn increasing interest, especially in the field of molecular targeting, cell imaging, drug delivery, and therapy. Many excellent works in these areas have been reported: demonstrating novel ideas, exploring new targets, and facilitating advanced diagnostic and therapeutic technologies. Importantly, some of them also have been employed to address real practical problems, especially in remote and less privileged areas. This contribution focuses on the application of peptide-gold hybrid nanomaterials for various molecular interactions, especially in biosensing/diagnostics and cell targeting/imaging, as well as for the development of highly active antimicrobial/antifouling coating strategies. Rationally designed peptide-gold nanomaterials with functional properties are discussed along with future challenges and opportunities.
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Affiliation(s)
- Xiaohu Liu
- School of Biomedical Engineering, School of Ophthalmology & Optometry, Wenzhou Medical University, Xueyuan Road 270, Wenzhou, 325027, China
- Wenzhou Institute, University of Chinese Academy of Sciences, Xinsan Road 16, Wenzhou, 325001, China
| | - Qingwen Zhang
- School of Biomedical Engineering, School of Ophthalmology & Optometry, Wenzhou Medical University, Xueyuan Road 270, Wenzhou, 325027, China
- Wenzhou Institute, University of Chinese Academy of Sciences, Xinsan Road 16, Wenzhou, 325001, China
| | - Wolfgang Knoll
- Austrian Institute of Technology, Giefinggasse 4, Vienna, 1210, Austria
| | - Bo Liedberg
- Centre for Biomimetic Sensor Science, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Yi Wang
- School of Biomedical Engineering, School of Ophthalmology & Optometry, Wenzhou Medical University, Xueyuan Road 270, Wenzhou, 325027, China
- Wenzhou Institute, University of Chinese Academy of Sciences, Xinsan Road 16, Wenzhou, 325001, China
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10
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Oliver D, Michaelis M, Heinz H, Volkov VV, Perry CC. From phage display to structure: an interplay of enthalpy and entropy in the binding of the LDHSLHS polypeptide to silica. Phys Chem Chem Phys 2019; 21:4663-4672. [PMID: 30747204 DOI: 10.1039/c8cp07011c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Polypeptide based biosilica composites show promise as next generation multi-functional nano-platforms for diagnostics and bio-catalytic applications. Following the identification of a strong silica binder (LDHSLHS) by phage display, we conduct structural analysis of the polypeptide at the interface with amorphous silica nanoparticles in an aqueous environment. Our approach relies on modelling infrared and Raman spectral responses using predictions of molecular dynamics simulations and quantum studies of the normal modes for several potential structures. By simultaneously fitting both infrared and Raman responses in the amide spectral region, we show that the main structural conformer has a beta-like central region and helix-twisted terminals. Classical simulations, as conducted previously (Chem. Mater., 2014, 26, 5725), predict that the association of the main structure with the interface is stimulated by electrostatic interactions though surface binding also requires spatially distributed sodium ions to compensate for negatively charged acidic silanol groups. Accordingly, diffusion of sodium ions would contribute to a stochastic character of the peptide association with the surface. Consistent with the described dynamics at the interface, the results obtained from isothermal titration calorimetry (ITC) confirm a significant enhancement of polypeptide binding to silica at higher concentrations of Na+. The results of this study suggest that the tertiary structure of a phage capsid protein plays a significant role in regulating the conformation of peptide LDHSLHS, increasing its binding to silica during the phage display process. The results presented here support design-led engineering of polypeptide-silica nanocomposites for bio-technological applications.
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Affiliation(s)
- Daniel Oliver
- Interdisciplinary Biomedical Research Centre, School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, UK.
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11
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Follmann HD, Messias I, Queiroz MN, Araujo RA, Rubira AF, Silva R. Designing hybrid materials with multifunctional interfaces for wound dressing, electrocatalysis, and chemical separation. J Colloid Interface Sci 2019; 533:106-125. [DOI: 10.1016/j.jcis.2018.08.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 07/31/2018] [Accepted: 08/03/2018] [Indexed: 01/01/2023]
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12
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Barbosa AJM, Oliveira AR, Roque ACA. Protein- and Peptide-Based Biosensors in Artificial Olfaction. Trends Biotechnol 2018; 36:1244-1258. [PMID: 30213453 DOI: 10.1016/j.tibtech.2018.07.004] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 07/04/2018] [Accepted: 07/05/2018] [Indexed: 12/14/2022]
Abstract
Animals' olfactory systems rely on proteins, olfactory receptors (ORs) and odorant-binding proteins (OBPs), as their native sensing units to detect odours. Recent advances demonstrate that these proteins can also be employed as molecular recognition units in gas-phase biosensors. In addition, the interactions between odorant molecules and ORs or OBPs are a source of inspiration for designing peptides with tunable odorant selectivity. We review recent progress in gas biosensors employing biological units (ORs, OBPs, and peptides) in light of future developments in artificial olfaction, emphasizing examples where biological components have been employed to detect gas-phase analytes.
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Affiliation(s)
- Arménio J M Barbosa
- UCIBIO, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Ana Rita Oliveira
- UCIBIO, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Ana C A Roque
- UCIBIO, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
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13
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Chen H, Li J, Zhang X, Li X, Yao M, Zheng G. Automated in Vivo Nanosensing of Breath-Borne Protein Biomarkers. NANO LETTERS 2018; 18:4716-4726. [PMID: 29995423 DOI: 10.1021/acs.nanolett.8b01070] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Toxicology and bedside medical condition monitoring is often desired to be both ultrasensitive and noninvasive. However, current biomarker analyses for these purposes are mostly offline and fail to detect low marker quantities. Here, we report a system called dLABer (detection of living animal's exhaled breath biomarker) that integrates living rats, breath sampling, microfluidics, and biosensors for the automated tracking of breath-borne biomarkers. Our data show that dLABer could selectively detect (online) and report differences (of up to 103-fold) in the levels of inflammation agent interleukin-6 (IL-6) exhaled by rats injected with different ambient particulate matter (PM). The dLABer system was further shown to have an up to 104 higher signal-to-noise ratio than that of the enzyme-linked immunosorbent assay (ELISA) when analyzing the same breath samples. In addition, both blood-borne IL-6 levels analyzed via ELISA in rats injected with different PM extracts and PM toxicity determined by a dithiothreitol (DTT) assay agreed well with those determined by the dLABer system. Video recordings further verified that rats exposed to PM with higher toxicity (according to a DTT assay and as revealed by dLABer) appeared to be less physically active. All the data presented here suggest that the dLABer system is capable of real-time, noninvasive monitoring of breath-borne biomarkers with ultrasensitivity. The dLABer system is expected to revolutionize pollutant health effect studies and bedside disease diagnosis as well as physiological condition monitoring at the single-protein level.
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Affiliation(s)
- Haoxuan Chen
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering , Peking University , Beijing 100871 , China
| | - Jing Li
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering , Peking University , Beijing 100871 , China
| | - Xiangyu Zhang
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering , Peking University , Beijing 100871 , China
| | - Xinyue Li
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering , Peking University , Beijing 100871 , China
| | - Maosheng Yao
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering , Peking University , Beijing 100871 , China
| | - Gengfeng Zheng
- Laboratory of Advanced Materials, Department of Chemistry and State Key Laboratory of Medical Neurobiology , Fudan University , Shanghai 200438 , China
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14
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Broza YY, Vishinkin R, Barash O, Nakhleh MK, Haick H. Synergy between nanomaterials and volatile organic compounds for non-invasive medical evaluation. Chem Soc Rev 2018; 47:4781-4859. [PMID: 29888356 DOI: 10.1039/c8cs00317c] [Citation(s) in RCA: 113] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This article is an overview of the present and ongoing developments in the field of nanomaterial-based sensors for enabling fast, relatively inexpensive and minimally (or non-) invasive diagnostics of health conditions with follow-up by detecting volatile organic compounds (VOCs) excreted from one or combination of human body fluids and tissues (e.g., blood, urine, breath, skin). Part of the review provides a didactic examination of the concepts and approaches related to emerging sensing materials and transduction techniques linked with the VOC-based non-invasive medical evaluations. We also present and discuss diverse characteristics of these innovative sensors, such as their mode of operation, sensitivity, selectivity and response time, as well as the major approaches proposed for enhancing their ability as hybrid sensors to afford multidimensional sensing and information-based sensing. The other parts of the review give an updated compilation of the past and currently available VOC-based sensors for disease diagnostics. This compilation summarizes all VOCs identified in relation to sickness and sampling origin that links these data with advanced nanomaterial-based sensing technologies. Both strength and pitfalls are discussed and criticized, particularly from the perspective of the information and communication era. Further ideas regarding improvement of sensors, sensor arrays, sensing devices and the proposed workflow are also included.
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Affiliation(s)
- Yoav Y Broza
- Department of Chemical Engineering and Russell Berrie Nanotechnology Institute, Technion - Israel Institute of Technology, Haifa 3200003, Israel.
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15
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Tran DP, Pham TTT, Wolfrum B, Offenhäusser A, Thierry B. CMOS-Compatible Silicon Nanowire Field-Effect Transistor Biosensor: Technology Development toward Commercialization. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E785. [PMID: 29751688 PMCID: PMC5978162 DOI: 10.3390/ma11050785] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2018] [Revised: 05/08/2018] [Accepted: 05/10/2018] [Indexed: 12/22/2022]
Abstract
Owing to their two-dimensional confinements, silicon nanowires display remarkable optical, magnetic, and electronic properties. Of special interest has been the development of advanced biosensing approaches based on the field effect associated with silicon nanowires (SiNWs). Recent advancements in top-down fabrication technologies have paved the way to large scale production of high density and quality arrays of SiNW field effect transistor (FETs), a critical step towards their integration in real-life biosensing applications. A key requirement toward the fulfilment of SiNW FETs' promises in the bioanalytical field is their efficient integration within functional devices. Aiming to provide a comprehensive roadmap for the development of SiNW FET based sensing platforms, we critically review and discuss the key design and fabrication aspects relevant to their development and integration within complementary metal-oxide-semiconductor (CMOS) technology.
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Affiliation(s)
- Duy Phu Tran
- Future Industries Institute and ARC Centre of Excellence for Convergent Nano-Bio Science and Technology, University of South Australia, Mawson Lakes 5095, South Australia, Australia.
| | - Thuy Thi Thanh Pham
- Future Industries Institute and ARC Centre of Excellence for Convergent Nano-Bio Science and Technology, University of South Australia, Mawson Lakes 5095, South Australia, Australia.
| | - Bernhard Wolfrum
- Department of Electrical, Electronic and Computer Engineering, Technical University of Munich, 85748 Munich, Germany.
| | | | - Benjamin Thierry
- Future Industries Institute and ARC Centre of Excellence for Convergent Nano-Bio Science and Technology, University of South Australia, Mawson Lakes 5095, South Australia, Australia.
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16
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Zhang X, Cheng J, Wu L, Mei Y, Jaffrezic-Renault N, Guo Z. An overview of an artificial nose system. Talanta 2018; 184:93-102. [PMID: 29674088 DOI: 10.1016/j.talanta.2018.02.113] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 01/31/2018] [Accepted: 02/28/2018] [Indexed: 12/22/2022]
Abstract
The present review describes recent advances in the development of an artificial nose system based on olfactory receptors and various sensing platforms. The kind of artificial nose, the production of olfactory receptors, the sensor platform for signal conversion and the application of the artificial nose system based on olfactory receptors and various sensing platforms are presented. The associated transduction modes are also discussed. The paper presents a review of the latest achievements and a critical evaluation of the state of the art in the field of artificial nose systems.
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Affiliation(s)
- Xiu Zhang
- Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Medical College, Wuhan University of Science and Technology, Wuhan 430065, PR China
| | - Jing Cheng
- Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Medical College, Wuhan University of Science and Technology, Wuhan 430065, PR China
| | - Lei Wu
- Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Medical College, Wuhan University of Science and Technology, Wuhan 430065, PR China
| | - Yong Mei
- Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Medical College, Wuhan University of Science and Technology, Wuhan 430065, PR China.
| | - Nicole Jaffrezic-Renault
- Institute of Analytical Sciences, UMR-CNRS 5280, University of Lyon, 5, La Doua Street, Villeurbanne 69100, France.
| | - Zhenzhong Guo
- Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Medical College, Wuhan University of Science and Technology, Wuhan 430065, PR China.
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17
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Supercritical carbon dioxide versus toluene as reaction media in silica functionalisation: Synthesis and characterisation of bonded aminopropyl silica intermediate. J Chromatogr A 2017; 1501:18-25. [DOI: 10.1016/j.chroma.2017.04.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 03/29/2017] [Accepted: 04/12/2017] [Indexed: 11/24/2022]
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18
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Cao A, Zhu W, Shang J, Klootwijk JH, Sudhölter EJR, Huskens J, de Smet LCPM. Metal-Organic Polyhedra-Coated Si Nanowires for the Sensitive Detection of Trace Explosives. NANO LETTERS 2017; 17:1-7. [PMID: 28073264 DOI: 10.1021/acs.nanolett.6b02360] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Surface-modified silicon nanowire-based field-effect transistors (SiNW-FETs) have proven to be a promising platform for molecular recognition in miniature sensors. In this work, we present a novel nanoFET device for the sensitive and selective detection of explosives based on affinity layers of metal-organic polyhedra (MOPs). The judicious selection of the geometric and electronic characteristics of the assembly units (organic ligands and unsaturated metal site) embedded within the MOP cage allowed for the formation of multiple charge-transfer (CT) interactions to facilitate the selective explosive inclusion. Meanwhile, the host-stabilized CT complex inside the cage acted as an effective molecular gating element to strongly modulate the electrical conductance of the silicon nanowires. By grafting the MOP cages onto a SiNW-FET device, the resulting sensor showed a good electrical sensing capability to various explosives, especially 2,4,6-trinitrotoluene (TNT), with a detection limit below the nanomolar level. Importantly, coupling MOPs-which have tunable structures and properties-to SiNW-based devices may open up new avenues for a wide range of sensing applications, addressing various target analytes.
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Affiliation(s)
- Anping Cao
- Department of Chemical Engineering, Delft University of Technology , Van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Wei Zhu
- Molecular NanoFabrication Group, MESA+ Institute for Nanotechnology, University of Twente , P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Jin Shang
- School of Energy and Environment, City University of Hong Kong , Kowloon, Hong Kong SAR
- Department of Chemical and Biomolecular Engineering, University of Melbourne , Parkville, Victoria 3010, Australia
| | - Johan H Klootwijk
- Philips Research Laboratories, High Tech Campus 4, 5656 AE Eindhoven, The Netherlands
| | - Ernst J R Sudhölter
- Department of Chemical Engineering, Delft University of Technology , Van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Jurriaan Huskens
- Molecular NanoFabrication Group, MESA+ Institute for Nanotechnology, University of Twente , P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Louis C P M de Smet
- Department of Chemical Engineering, Delft University of Technology , Van der Maasweg 9, 2629 HZ Delft, The Netherlands
- Laboratory of Organic Chemistry, Wageningen University & Research , Stippeneng 4, 6708 WE Wageningen, The Netherlands
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19
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Ghosh R, Giri PK. Silicon nanowire heterostructures for advanced energy and environmental applications: a review. NANOTECHNOLOGY 2017; 28:012001. [PMID: 27893437 DOI: 10.1088/0957-4484/28/1/012001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Semiconductor nanowires (NWs), in particular Si NWs, have attracted much attention in the last decade for their unique electronic properties and potential applications in several emerging areas. With the introduction of heterostructures (HSs) on NWs, new functionalities are obtained and the device performance is improved significantly in many cases. Due to the easy fabrication techniques, excellent optoelectronic properties and compatibility of forming HSs with different inorganic/organic materials, Si NW HSs have been utilized in various configurations and device architectures. Herein, we review the recent developments in Si NW HS-based devices including the fabrication techniques, properties (e.g., light emitting, antireflective, photocatalytic, electrical, photovoltaic, sensing etc) and related emerging applications in energy generation, conversion, storage, and environmental cleaning and monitoring. In particular, recent advances in Si NW HS-based solar photovoltaics, light-emitting devices, thermoelectrics, Li-ion batteries, supercapacitors, hydrogen generation, artificial photosynthesis, photocatalytic degradation of organic dyes in water treatment, chemical and gas sensors, biomolecular sensors for microbial monitoring etc have been addressed in detail. The problems and challenges in utilizing Si NW HSs in device applications and the key parameters to improve the device performance are pointed out. The recent trends in the commercial applications of Si NW HS-based devices and future outlook of the field are presented at the end.
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Affiliation(s)
- Ramesh Ghosh
- Department of Physics, Indian Institute of Technology Guwahati, Guwahati 781039, India
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20
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Lin L, Liu D, Chen Q, Zhou H, Wu J. A vertical tip-tip contact silicon nanowire array for gas sensing. NANOSCALE 2016; 8:17757-17764. [PMID: 27722730 DOI: 10.1039/c6nr05556g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Novel chemiresistive gas sensors based on a vertical tip-tip contact silicon nanowire (TTC-SiNW) array were constructed. The welding of TTC-SiNWs after joule heating treatment was confirmed by a current-voltage curve (I-V curve). The TTC-SiNW structure not only resolved the problem of electrode contact encountered in conventional nanowire sensors, but also elongated the nanowire length to increase the void space for fast gas diffusion. The TTC-SiNW sensor comprising the same two types of SiNW arrays responded to NO2 very sensitively. The LOD for the p-p and n-n contact SiNW arrays is around 150 ppb and 3 ppb (S/N = 3), respectively. Furthermore, the highly oriented nano-junction formed on the TTC structure provided solid evidence to clarify the contribution of the nanojunction to gas sensing behavior. The TTC-SiNW sensor with a p-n junction displays a significant rectification effect. The sensitive response towards NO2 (LOD is about 18 ppb) was observed at a reverse bias voltage, whereas the response at a forward bias voltage was insignificant. Finally, the mechanism of gas sensing behavior on different types of TTC structures was proposed.
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Affiliation(s)
- Leimiao Lin
- Institute of Microanalytical System, Department of Chemistry, Zhejiang University, Hangzhou 310058, China.
| | - Dong Liu
- Institute of Microanalytical System, Department of Chemistry, Zhejiang University, Hangzhou 310058, China.
| | - Qiaofen Chen
- Institute of Microanalytical System, Department of Chemistry, Zhejiang University, Hangzhou 310058, China.
| | - Hongzhi Zhou
- Institute of Microanalytical System, Department of Chemistry, Zhejiang University, Hangzhou 310058, China.
| | - Jianmin Wu
- Institute of Microanalytical System, Department of Chemistry, Zhejiang University, Hangzhou 310058, China.
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21
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Abstract
Sensitive and quantitative analysis of proteins and other biochemical species are central to disease diagnosis, drug screening and proteomic studies. Research advances exploiting SiNWs configured as FETs for biomolecule analysis have emerged as one of the most promising and powerful platforms for label-free, real-time, and sensitive electrical detection of proteins as well as many other biological species. In this chapter, we first briefly introduce the fundamental principle for semiconductor NW-FET sensors. Representative examples of semiconductor NW sensors are then summarized for sensitive chemical and biomolecule detection, including proteins, nucleic acids, viruses and small molecules. In addition, this chapter discusses several electrical and surface functionalization methods for enhancing the sensitivity of semiconductor NW sensors.
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Affiliation(s)
- Anqi Zhang
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA USA
| | - Gengfeng Zheng
- Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai, China
| | - Charles M. Lieber
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA USA
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA USA
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22
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Fennell JF, Liu SF, Azzarelli JM, Weis JG, Rochat S, Mirica KA, Ravnsbæk JB, Swager TM. Nanowire Chemical/Biological Sensors: Status and a Roadmap for the Future. Angew Chem Int Ed Engl 2015; 55:1266-81. [PMID: 26661299 DOI: 10.1002/anie.201505308] [Citation(s) in RCA: 203] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Indexed: 01/08/2023]
Abstract
Chemiresistive sensors are becoming increasingly important as they offer an inexpensive option to conventional analytical instrumentation, they can be readily integrated into electronic devices, and they have low power requirements. Nanowires (NWs) are a major theme in chemosensor development. High surface area, interwire junctions, and restricted conduction pathways give intrinsically high sensitivity and new mechanisms to transduce the binding or action of analytes. This Review details the status of NW chemosensors with selected examples from the literature. We begin by proposing a principle for understanding electrical transport and transduction mechanisms in NW sensors. Next, we offer the reader a review of device performance parameters. Then, we consider the different NW types followed by a summary of NW assembly and different device platform architectures. Subsequently, we discuss NW functionalization strategies. Finally, we propose future developments in NW sensing to address selectivity, sensor drift, sensitivity, response analysis, and emerging applications.
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Affiliation(s)
- John F Fennell
- Department of Chemistry and Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Sophie F Liu
- Department of Chemistry and Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Joseph M Azzarelli
- Department of Chemistry and Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Jonathan G Weis
- Department of Chemistry and Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Sébastien Rochat
- Department of Chemistry and Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Katherine A Mirica
- Department of Chemistry and Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Jens B Ravnsbæk
- Department of Chemistry and Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Timothy M Swager
- Department of Chemistry and Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, MA, USA.
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23
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Fennell JF, Liu SF, Azzarelli JM, Weis JG, Rochat S, Mirica KA, Ravnsbæk JB, Swager TM. Nanodrähte in Chemo‐ und Biosensoren: aktueller Stand und Fahrplan für die Zukunft. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505308] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- John F. Fennell
- Department of Chemistry and Institute for Soldier Nanotechnologies Massachusetts Institute of Technology Cambridge MA USA
| | - Sophie F. Liu
- Department of Chemistry and Institute for Soldier Nanotechnologies Massachusetts Institute of Technology Cambridge MA USA
| | - Joseph M. Azzarelli
- Department of Chemistry and Institute for Soldier Nanotechnologies Massachusetts Institute of Technology Cambridge MA USA
| | - Jonathan G. Weis
- Department of Chemistry and Institute for Soldier Nanotechnologies Massachusetts Institute of Technology Cambridge MA USA
| | - Sébastien Rochat
- Department of Chemistry and Institute for Soldier Nanotechnologies Massachusetts Institute of Technology Cambridge MA USA
| | - Katherine A. Mirica
- Department of Chemistry and Institute for Soldier Nanotechnologies Massachusetts Institute of Technology Cambridge MA USA
| | - Jens B. Ravnsbæk
- Department of Chemistry and Institute for Soldier Nanotechnologies Massachusetts Institute of Technology Cambridge MA USA
| | - Timothy M. Swager
- Department of Chemistry and Institute for Soldier Nanotechnologies Massachusetts Institute of Technology Cambridge MA USA
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24
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Azmi S, Jiang K, Stiles M, Thundat T, Kaur K. Detection of Listeria monocytogenes with short peptide fragments from class IIa bacteriocins as recognition elements. ACS COMBINATORIAL SCIENCE 2015; 17:156-63. [PMID: 25548942 DOI: 10.1021/co500079k] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
We employed a direct peptide-bacteria binding assay to screen peptide fragments for high and specific binding to Listeria monocytogenes. Peptides were screened from a peptide array library synthesized on cellulose membrane. Twenty four peptide fragments (each a 14-mer) were derived from three potent anti-listerial peptides, Leucocin A, Pediocin PA1, and Curvacin A, that belong to class IIa bacteriocins. Fragment Leu10 (GEAFSAGVHRLANG), derived from the C-terminal region of Leucocin A, displayed the highest binding among all of the library fragments toward several pathogenic Gram-positive bacteria, including L. monocytogenes, Enterococcus faecalis, and Staphylococcus aureus. The specific binding of Leu10 to L. monocytogenes was further validated using microcantilever (MCL) experiments. Microcantilevers coated with gold were functionalized with peptides by chemical conjugation using a cysteamine linker to yield a peptide density of ∼4.8×10(-3) μmol/cm2 for different peptide fragments. Leu10 (14-mer) functionalized MCL was able to detect Listeria with same sensitivity as that of Leucocin A (37-mer) functionalized MCL, validating the use of short peptide fragments in bacterial detection platforms. Fragment Leu10 folded into a helical conformation in solution, like that of native Leucocin A, suggesting that both Leu10 and Leucocin A may employ a similar mechanism for binding target bacteria. The results show that peptide-conjugated microcantilevers can function as highly sensitive platforms for Listeria detection and hold potential to be developed as biosensors for pathogenic bacteria.
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Affiliation(s)
- Sarfuddin Azmi
- Faculty
of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
| | - Keren Jiang
- Department
of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 2V4, Canada
| | | | - Thomas Thundat
- Department
of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 2V4, Canada
| | - Kamaljit Kaur
- Faculty
of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
- Chapman
University School of Pharmacy (CUSP), Harry and Diane Rinker Health
Science Campus, Chapman University, Irvine, California 92618-1908, United States
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25
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Shehada N, Brönstrup G, Funka K, Christiansen S, Leja M, Haick H. Ultrasensitive silicon nanowire for real-world gas sensing: noninvasive diagnosis of cancer from breath volatolome. NANO LETTERS 2015; 15:1288-95. [PMID: 25494909 DOI: 10.1021/nl504482t] [Citation(s) in RCA: 119] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
We report on an ultrasensitive, molecularly modified silicon nanowire field effect transistor that brings together the lock-and-key and cross-reactive sensing worlds for the diagnosis of (gastric) cancer from exhaled volatolome. The sensor is able to selectively detect volatile organic compounds (VOCs) that are linked with gastric cancer conditions in exhaled breath and to discriminate them from environmental VOCs that exist in exhaled breath samples but do not relate to the gastric cancer per se. Using breath samples collected from actual patients with gastric cancer and from volunteers who do not have cancer, blind analysis validated the ability of the reported sensor to discriminate between gastric cancer and control conditions with >85% accuracy, irrespective of important confounding factors such as tobacco consumption and gender. The reported sensing approach paves the way to use the power of silicon nanowires for simple, inexpensive, portable, and noninvasive diagnosis of cancer and other disease conditions.
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Affiliation(s)
- Nisreen Shehada
- The Department of Chemical Engineering and Russell Berrie Nanotechnology Institute, Technion-Israel Institute of Technology , Haifa 3200003, Israel
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26
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Hoffmann MWG, Mayrhofer L, Casals O, Caccamo L, Hernandez-Ramirez F, Lilienkamp G, Daum W, Moseler M, Waag A, Shen H, Prades JD. A highly selective and self-powered gas sensor via organic surface functionalization of p-Si/n-ZnO diodes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:8017-22. [PMID: 25355241 DOI: 10.1002/adma.201403073] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Revised: 09/06/2014] [Indexed: 05/25/2023]
Abstract
Selectivity and low power consumption are major challenges in the development of sophisticated gas sensor devices. A sensor system is presented that unifies selective sensor-gas interactions and energy-harvesting properties, using defined organic-inorganic hybrid materials. Simulations of chemical-binding interactions and the consequent electronic surface modulation give more insight into the complex sensing mechanism of selective gas detection.
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Affiliation(s)
- Martin W G Hoffmann
- Institute of Semiconductor Technology, Technische Universität Braunschweig, 38106, Braunschweig, Germany; Department of Electronics, University of Barcelona, 08028, Barcelona, Spain; Laboratory for Emerging Nanometrology, Technische Universität Braunschweig, 38106, Braunschweig, Germany
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27
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Liu Y, Yobas L. Label-free specific detection of femtomolar cardiac troponin using an integrated nanoslit array fluidic diode. NANO LETTERS 2014; 14:6983-90. [PMID: 25366228 DOI: 10.1021/nl5032524] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
We demonstrate here for the first time the utility of an integrated nanofluidic diode for detecting and quantifying physiologically relevant macromolecules. Troponin T, a key human cardiac protein biomarker, was selectively and rapidly detected free of labels for concentrations down to 10 fg/mL (∼ 0.3 fM) in buffer as well as 10 pg/mL (∼ 300 fM) in untreated human serum. This ultrasensitive detection arises from monolithic integration of a unique nanofluidic diode structure that is highly robust and amenable to site-specific surface modification. The structure features a planar nanoslit array where each nanoslit is defined at a nominal width of 70 nm over a micrometer-scale silicon trench without the use of high-resolution patterning techniques. Through vapor deposition, a glass layer is placed at a nonuniform thickness, tapering the trench profile upward and contributing to the triangular nanoslit structure. This asymmetric profile is essential for ionic current rectification noted here at various pH values, ionic strengths, and captured target species, which modulate the surface-charge density within the sensitive region of the nanoslit. The nanoslit, unlike nanopores, offers only 1D confinement, which appears to be adequate for reasonable rectification. The measurements are found in quantitative agreement with the diode simulations for the first time based on a pH- and salt-dependent surface-charge model.
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Affiliation(s)
- Yifan Liu
- Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology , Clear Water Bay, Kowloon, Hong Kong S. A. R
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28
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Mechanistic study for immobilization of cysteine-labeled oligopeptides on UV-activated surfaces. Colloids Surf B Biointerfaces 2014; 122:166-174. [PMID: 25036779 DOI: 10.1016/j.colsurfb.2014.05.042] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Revised: 04/07/2014] [Accepted: 05/24/2014] [Indexed: 01/18/2023]
Abstract
In this study, we report immobilization of cysteine-labeled oligopeptides on UV activated surfaces decorated with N,N-dimethyl-n-octadecyl-3-aminopropyltrimethoxysilyl chloride (DMOAP). Our result shows that cysteine group, regardless of its position in the oligopeptide, is essential for successful immobilization of oligopeptide on the UV-activated surface. A possible reaction mechanism is nucleophilic addition of thiolates to surface aldehyde groups generated during UV activation. By using this technique, we are able to incorporate anchoring points into oligopeptides through cysteine residues. Furthermore, immobilized oligopeptides on the UV-activated surface is very stable even under harsh washing conditions. Finally, we show that an HPQ-containing oligopeptide can be immobilized on the UV-activated surface, but the final surface density and its ability to bind streptavidin are affected by the position of cysteine and HPQ. An oligopeptide with a cysteine at the N-terminus and a HPQ motif at the C-terminus gives the highest binding signal in the streptavidin-binding assay. This result is potentially useful for the development of functional oligopeptide microarrays for detecting target protein molecules.
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29
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Silicon nanowires as field-effect transducers for biosensor development: A review. Anal Chim Acta 2014; 825:1-25. [DOI: 10.1016/j.aca.2014.03.016] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2013] [Revised: 03/11/2014] [Accepted: 03/13/2014] [Indexed: 12/28/2022]
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30
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Moon CH, Zhang M, Myung NV, Haberer ED. Highly sensitive hydrogen sulfide (H₂S) gas sensors from viral-templated nanocrystalline gold nanowires. NANOTECHNOLOGY 2014; 25:135205. [PMID: 24598078 DOI: 10.1088/0957-4484/25/13/135205] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A facile, site-specific viral-templated assembly method was used to fabricate sensitive hydrogen sulfide (H2S) gas sensors at room temperature. A gold-binding M13 bacteriophage served to organize gold nanoparticles into linear arrays which were used as seeds for subsequent nanowire formation through electroless deposition. Nanowire widths and densities within the sensors were modified by electroless deposition time and phage concentration, respectively, to tune device resistance. Chemiresistive H2S gas sensors with superior room temperature sensing performance were produced with sensitivity of 654%/ppm(v), theoretical lowest detection limit of 2 ppb(v), and 70% recovery within 9 min for 0.025 ppm(v). The role of the viral template and associated gold-binding peptide was elucidated by removing organics using a short O₂ plasma treatment followed by an ethanol dip. The template and gold-binding peptide were crucial to electrical and sensor performance. Without surface organics, the resistance fell by several orders of magnitude, the sensitivity dropped by more than a factor of 100 to 6%/ppm(v), the lower limit of detection increased, and no recovery was detected with dry air flow. Viral templates provide a novel, alternative fabrication route for highly sensitive, nanostructured H2S gas sensors.
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Affiliation(s)
- Chung Hee Moon
- Materials Science and Engineering Program, University of California, Riverside, CA 92521, USA
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31
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Etayash H, Norman L, Thundat T, Stiles M, Kaur K. Surface-conjugated antimicrobial peptide leucocin a displays high binding to pathogenic gram-positive bacteria. ACS APPLIED MATERIALS & INTERFACES 2014; 6:1131-1138. [PMID: 24359454 DOI: 10.1021/am404729c] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Leucocin A, a representative class IIa bacteriocin, is a ribosomally synthesized antimicrobial peptide (AMP) that displays potent activity against specific gram-positive bacteria. The antibacterial activity of such peptides is preceded by the binding event that can be utilized for studying specific peptide-bacteria interactions. In this study, 37-residue Leucocin A (LeuA) was synthesized using solid-phase peptide synthesis and covalently immobilized on gold substrates from either the N- or C-terminal. Both the peptide monolayers on gold substrates were incubated separately with five strains of gram-positive bacteria and displayed differential binding to different strains with highest binding to pathogenic Listeria monocytogenes . The C-terminally immobilized LeuA showed higher bacterial binding compared to the N-terminally attached LeuA. The full length immobilized LeuA (37-residue) was active as well as displayed higher bacterial binding (73 ± 6 bacteria/100 μm(2)) compared to 24-residue inactive LeuA fragment (40 ± 8 bacteria/100 μm(2)) from the C-terminal region. The high and specific bacterial binding ability of LeuA functionalized surfaces support the potential use of class IIa bacteriocins in antimicrobial peptide-based diagnostic platforms.
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Affiliation(s)
- Hashem Etayash
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta , Edmonton, Alberta T6G 2E1, Canada
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32
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Etayash H, Jiang K, Thundat T, Kaur K. Impedimetric detection of pathogenic Gram-positive bacteria using an antimicrobial peptide from class IIa bacteriocins. Anal Chem 2014; 86:1693-700. [PMID: 24400685 DOI: 10.1021/ac4034938] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Real-time, label-free detection of Gram-positive bacteria with high selectivity and sensitivity is demonstrated using an interdigitated impedimetric array functionalized with naturally produced antimicrobial peptide from class IIa bacteriocins. The antimicrobial peptide, leucocin A, was chemically synthesized and covalently immobilized on interdigitated gold microelectrodes via the interaction between the C-terminal carboxylic acid of the peptide and free amines of a preattached thiolated linker. Exposing the peptide sensor to various concentrations of Gram-positive bacteria generated reproducible impedance spectra that detected peptide-bacteria interactions at a concentration of 1 cell/μL. The peptide sensor also selectively detected Listeria monocytogenes from other Gram-positive strains at a concentration of 10(3) cfu mL(-1). The study highlights that short peptide ligands from bacteriocin class offer high selectivity in bacterial detection and can be used in developing a robust, portable biosensor device to efficiently detect pathogenic Gram-positive bacteria in food samples.
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Affiliation(s)
- Hashem Etayash
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta , Edmonton, Alberta, T6G 2E1, Canada
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33
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Cao A, Sudhölter EJR, de Smet LCPM. Silicon nanowire-based devices for gas-phase sensing. SENSORS 2013; 14:245-71. [PMID: 24368699 PMCID: PMC3926556 DOI: 10.3390/s140100245] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Revised: 11/12/2013] [Accepted: 11/18/2013] [Indexed: 01/29/2023]
Abstract
Since their introduction in 2001, SiNW-based sensor devices have attracted considerable interest as a general platform for ultra-sensitive, electrical detection of biological and chemical species. Most studies focus on detecting, sensing and monitoring analytes in aqueous solution, but the number of studies on sensing gases and vapors using SiNW-based devices is increasing. This review gives an overview of selected research papers related to the application of electrical SiNW-based devices in the gas phase that have been reported over the past 10 years. Special attention is given to surface modification strategies and the sensing principles involved. In addition, future steps and technological challenges in this field are addressed.
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Affiliation(s)
| | | | - Louis C P M de Smet
- Department of Chemical Engineering, Delft University of Technology, Julianalaan 136, Delft 2628 BL, The Netherlands.
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34
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Haick H, Broza YY, Mochalski P, Ruzsanyi V, Amann A. Assessment, origin, and implementation of breath volatile cancer markers. Chem Soc Rev 2013; 43:1423-49. [PMID: 24305596 DOI: 10.1039/c3cs60329f] [Citation(s) in RCA: 358] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A new non-invasive and potentially inexpensive frontier in the diagnosis of cancer relies on the detection of volatile organic compounds (VOCs) in exhaled breath samples. Breath can be sampled and analyzed in real-time, leading to fascinating and cost-effective clinical diagnostic procedures. Nevertheless, breath analysis is a very young field of research and faces challenges, mainly because the biochemical mechanisms behind the cancer-related VOCs are largely unknown. In this review, we present a list of 115 validated cancer-related VOCs published in the literature during the past decade, and classify them with respect to their "fat-to-blood" and "blood-to-air" partition coefficients. These partition coefficients provide an estimation of the relative concentrations of VOCs in alveolar breath, in blood and in the fat compartments of the human body. Additionally, we try to clarify controversial issues concerning possible experimental malpractice in the field, and propose ways to translate the basic science results as well as the mechanistic understanding to tools (sensors) that could serve as point-of-care diagnostics of cancer. We end this review with a conclusion and a future perspective.
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Affiliation(s)
- Hossam Haick
- The Department of Chemical Engineering and Russell Berrie Nanotechnology Institute, Technion - Israel Institute of Technology, Haifa 3200003, Israel.
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Wang Y, Wang T, Da P, Xu M, Wu H, Zheng G. Silicon nanowires for biosensing, energy storage, and conversion. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:5177-95. [PMID: 23828226 DOI: 10.1002/adma.201301943] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 05/29/2013] [Indexed: 05/06/2023]
Abstract
Semiconducting silicon nanowires (SiNWs) represent one of the most interesting research directions in nanoscience and nanotechnology, with capabilities of realizing structural and functional complexity through rational design and synthesis. The exquisite control of chemical composition, structure, morphology, doping, and assembly of SiNWs, in both individual and array format, as well as incorporation with other materials, offers a nanoscale building block with unique electronic, optoelectronic, and catalytic properties, thus allowing for a variety of exciting opportunities in the fields of life sciences and renewable energy. This review provides a brief summary of SiNW research in the past decade, from the SiNW synthesis by both the top-down approaches and the bottom-up approaches, to several important biological and energy applications including biomolecule sensing, interfacing with cells and tissues, lithium-ion batteries, solar cells, and photoelectrochemical conversion.
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Affiliation(s)
- Yanli Wang
- Laboratory of Advanced Materials, Department of Chemistry, Fudan University, Shanghai 200433, China
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36
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Middleton DA, Madine J, Castelletto V, Hamley IW. Insights into the molecular architecture of a peptide nanotube using FTIR and solid-state NMR spectroscopic measurements on an aligned sample. Angew Chem Int Ed Engl 2013; 52:10537-40. [PMID: 23955926 PMCID: PMC4672711 DOI: 10.1002/anie.201301960] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Indexed: 11/05/2022]
Abstract
Queuing up: Molecular orientation within macroscopically aligned nanotubes of the peptide AAAAAAK can be studied by solid-state NMR and IR spectroscopy. Line shape analysis of the NMR spectra indicates that the peptide N-H bonds are tilted 65-70° relative to the nanotube long axis. Re-evaluation of earlier X-ray fiber diffraction data suggests that the peptide molecules are hydrogen-bonded in a helical arrangement along the nanotube axis.
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Affiliation(s)
- David A Middleton
- Institute of Integrative Biology, University of Liverpool, Crown Street, Liverpool L69 7ZB (UK).
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37
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Middleton DA, Madine J, Castelletto V, Hamley IW. Insights into the Molecular Architecture of a Peptide Nanotube Using FTIR and Solid-State NMR Spectroscopic Measurements on an Aligned Sample. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301960] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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38
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Wang J, Wang Z, Li Q, Gan L, Xu X, Li L, Guo X. Revealing Interface-Assisted Charge-Transfer Mechanisms by Using Silicon Nanowires as Local Probes. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209816] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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39
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Wang J, Wang Z, Li Q, Gan L, Xu X, Li L, Guo X. Revealing Interface-Assisted Charge-Transfer Mechanisms by Using Silicon Nanowires as Local Probes. Angew Chem Int Ed Engl 2013; 52:3369-73. [DOI: 10.1002/anie.201209816] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2012] [Revised: 01/26/2013] [Indexed: 11/09/2022]
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40
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Nagraj N, Slocik JM, Phillips DM, Kelley-Loughnane N, Naik RR, Potyrailo RA. Selective sensing of vapors of similar dielectric constants using peptide-capped gold nanoparticles on individual multivariable transducers. Analyst 2013; 138:4334-9. [DOI: 10.1039/c3an00088e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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41
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Ray S, Takafuji M, Ihara H. Chromatographic evaluation of a newly designed peptide-silica stationary phase in reverse phase liquid chromatography and hydrophilic interaction liquid chromatography: Mixed mode behavior. J Chromatogr A 2012; 1266:43-52. [DOI: 10.1016/j.chroma.2012.10.004] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Revised: 10/01/2012] [Accepted: 10/02/2012] [Indexed: 11/17/2022]
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42
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Chen WY, Chen HC, Yang YS, Huang CJ, Chan HWH, Hu WP. Improved DNA detection by utilizing electrically neutral DNA probe in field-effect transistor measurements as evidenced by surface plasmon resonance imaging. Biosens Bioelectron 2012; 41:795-801. [PMID: 23116544 DOI: 10.1016/j.bios.2012.10.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Revised: 10/02/2012] [Accepted: 10/03/2012] [Indexed: 12/20/2022]
Abstract
Intensive efforts have been focused on the development of ultrasensitive DNA biosensors capable of quantitative gene expression analysis. Various neutralized nucleic acids have been demonstrated as alternative and attractive probe for the design of a DNA chip. However, the mechanism of the improvements has not been clearly revealed. In this investigation, we used a newly developed neutral ethylated DNA (E-DNA), a DNA analog with the "RO-P-O" backbone (wherein R could be methyl, ethyl, aryl, or alkyl group) obtained from synthetic procedures, and a silicon nanowire (SiNW) field-effect transistor (FET) to evaluate the difference in DNA detection performance while using E-DNA and DNA as probes. It is demonstrated that using the E-DNA probe in the FET measurement could have a significantly enhanced effect upon the detection sensitivity. Surface plasmon resonance imaging (SPRi) was used to evidence the mechanism of the improved detection sensitivity. SPRi analysis showed the amounts of probe immobilization on the sensor surface and the hybridization efficiency were both enhanced with the use of E-DNA. Consequently, neutral ethylated DNA probe hold a great promise for DNA sensing, especially in the electrical-based sensor.
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Affiliation(s)
- Wen-Yih Chen
- Department of Chemical and Materials Engineering, National Central University, Jhong-Li 320, Taiwan.
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43
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Distefano G, Comotti A, Bracco S, Beretta M, Sozzani P. Porous Dipeptide Crystals as Polymerization Nanoreactors. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201204178] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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44
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Distefano G, Comotti A, Bracco S, Beretta M, Sozzani P. Porous dipeptide crystals as polymerization nanoreactors. Angew Chem Int Ed Engl 2012; 51:9258-62. [PMID: 22893625 DOI: 10.1002/anie.201204178] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Indexed: 11/08/2022]
Affiliation(s)
- Gaetano Distefano
- Department of Materials Science, University of Milano Bicocca, Via R. Cozzi 53, 20125 Milano, Italy
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45
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Rothenstein D, Claasen B, Omiecienski B, Lammel P, Bill J. Isolation of ZnO-Binding 12-mer Peptides and Determination of Their Binding Epitopes by NMR Spectroscopy. J Am Chem Soc 2012; 134:12547-56. [DOI: 10.1021/ja302211w] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Dirk Rothenstein
- Institute
for Materials Science and §Institute for Organic Chemistry, University of Stuttgart, 70569 Stuttgart, Germany
| | - Birgit Claasen
- Institute
for Materials Science and §Institute for Organic Chemistry, University of Stuttgart, 70569 Stuttgart, Germany
| | - Beatrice Omiecienski
- Institute
for Materials Science and §Institute for Organic Chemistry, University of Stuttgart, 70569 Stuttgart, Germany
| | - Patricia Lammel
- Institute
for Materials Science and §Institute for Organic Chemistry, University of Stuttgart, 70569 Stuttgart, Germany
| | - Joachim Bill
- Institute
for Materials Science and §Institute for Organic Chemistry, University of Stuttgart, 70569 Stuttgart, Germany
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Abstract
The development of a miniaturized sensing platform tailored for sensitive and selective detection of a variety of biochemical analytes could offer transformative fundamental and technological opportunities. Due to their high surface-to-volume ratios, nanoscale materials are extremely sensitive sensors. Likewise, peptides represent robust substrates for selective recognition due to the potential for broad chemical diversity within their relatively compact size. Here we explore the possibilities of linking peptides to nanosensors for the selective detection of biochemical targets. Such systems raise a number of interesting fundamental challenges: What are the peptide sequences, and how can rational design be used to derive selective binders? What nanomaterials should be used, and what are some strategies for assembling hybrid nanosensors? What role does molecular modeling play in elucidating response mechanisms? What is the resulting performance of these sensors, in terms of sensitivity, selectivity, and response time? What are some potential applications? This Account will highlight our early attempts to address these research challenges. Specifically, we use natural peptide sequences or sequences identified from phage display as capture elements. The sensors are based on a variety of nanomaterials including nanowires, graphene, and carbon nanotubes. We couple peptides to the nanomaterial surfaces via traditional surface functionalization methods or self-assembly. Molecular modeling provides detailed insights into the hybrid nanostructure, as well as the sensor detection mechanisms. The peptide nanosensors can distinguish chemically camouflaged mixtures of vapors and detect chemical warfare agents with sensitivities as low as parts-per-billion levels. Finally, we anticipate future uses of this technology in biomedicine: for example, devices based on these sensors could detect disease from the molecular components in human breath. Overall, these results provide a novel platform for the development of highly sensitive and selective "nanoelectronic noses".
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Affiliation(s)
- Yue Cui
- Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544, United States
- Department of Biological Engineering, Utah State University, Logan, Utah 84322, United States
| | - Sang N. Kim
- Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States
| | - Rajesh R. Naik
- Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States
| | - Michael C. McAlpine
- Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544, United States
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47
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Kim H, Kim SY, Nam S, Ronnett GV, Han HS, Moon C, Kim Y. Direct measurement of extracellular electrical signals from mammalian olfactory sensory neurons in planar triode devices. Analyst 2012; 137:2047-53. [PMID: 22434037 DOI: 10.1039/c2an16205a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An artificial nose was developed to mimic aspects of sensory transduction of the peripheral mammalian olfactory system. We directly cultured and differentiated rat olfactory sensory neurons (OSNs) on indium-tin oxide electrodes of planar triode substrates without a coupling agent. Direct voltage (~50 μV) and current (~250 nA) signals were measured simultaneously when OSNs on the planar triode substrates were exposed to odorant mixtures. The response signals were sensitive to the concentration of the odorant mixture, with a typical lifetime, shape, and adaptation profile as seen in responses upon repeated stimulation in vivo. We found that the rising time to the peak current was ~161 ms, while the signal back to baseline was in 1.8 s, which are in agreement with the natural intracellular electrophysiological responses. These results provide the first evidence that mature OSNs grown in a planar triode device are able to detect direct electrophysiological responses to odorants.
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Affiliation(s)
- Hwajeong Kim
- Organic Nanoelectronics Laboratory, Department of Chemical Engineering, Kyungpook National University, Daegu 702-701, Republic of Korea
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48
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Cung K, Slater RL, Cui Y, Jones SE, Ahmad H, Naik RR, McAlpine MC. Rapid, multiplexed microfluidic phage display. LAB ON A CHIP 2012; 12:562-5. [PMID: 22182980 DOI: 10.1039/c2lc21129g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The development of a method for high-throughput, automated proteomic screening could impact areas ranging from fundamental molecular interactions to the discovery of novel disease markers and therapeutic targets. Surface display techniques allow for efficient handling of large molecular libraries in small volumes. In particular, phage display has emerged as a powerful technology for selecting peptides and proteins with enhanced, target-specific binding affinities. Yet, the process becomes cumbersome and time-consuming when multiple targets are involved. Here we demonstrate for the first time a microfluidic chip capable of identifying high affinity phage-displayed peptides for multiple targets in just a single round and without the need for bacterial infection. The chip is shown to be able to yield well-established control consensus sequences while simultaneously identifying new sequences for clinically important targets. Indeed, the confined parameters of the device allow not only for highly controlled assay conditions but also introduce a significant time-reduction to the phage display process. We anticipate that this easily-fabricated, disposable device has the potential to impact areas ranging from fundamental studies of protein, peptide, and molecular interactions, to applications such as fully automated proteomic screening.
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Affiliation(s)
- Kellye Cung
- Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ 08544, USA
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49
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Egatz-Gomez A, Majithia R, Levert C, Meissner KE. Super-wetting, wafer-sized silicon nanowire surfaces with hierarchical roughness and low defects. RSC Adv 2012. [DOI: 10.1039/c2ra22267a] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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50
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Shah SM, Martini C, Ackermann J, Fages F. Photoswitching in azobenzene self-assembled monolayers capped on zinc oxide: nanodots vs nanorods. J Colloid Interface Sci 2011; 367:109-14. [PMID: 22082797 DOI: 10.1016/j.jcis.2011.10.045] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2011] [Revised: 09/05/2011] [Accepted: 10/17/2011] [Indexed: 11/29/2022]
Abstract
We report the synthesis and spectroscopic characterization of nanohybrid structures consisting of an azobenzene compound grafted on the surface of zinc oxide nanoparticles. Characteristic bathochromic shifts indicate that the azobenzene photochromic molecules self-assemble onto the surface of the nanocrystals. The extent of packing is dependent on the shape of the nanoparticle. ZnO nanorods, with flat facets, enable a tighter organization of the molecules in the self-assembled monolayer than in the case of nanodots that display a more curvated shape. Consistently, the efficiency of photochromic switching of the self-assembled monolayer on ZnO nanoparticles is also shown to be strongly affected by nanoparticle shape.
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Affiliation(s)
- Syed Mujtaba Shah
- CINaM, UPR 3118 CNRS - Université de la Méditerranée, Campus de Luminy, Case 913, Marseille 13288, France.
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