1
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Hao X, Gu Q, Isborn C, Vasquez JR, Long MP, Ye T. Quantitative measurement of cation-mediated adhesion of DNA to anionic surfaces. SOFT MATTER 2024. [PMID: 39194357 DOI: 10.1039/d3sm01733h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/29/2024]
Abstract
Anionic polyelectrolytes, such as DNA, are attracted to anionic surfaces in the presence of multivalent cations. A major barrier toward molecular-level understanding of these attractive interactions is the paucity of measurements of the binding strength. Here, atomic force microscopy-based single molecule force spectroscopy was used to quantify the binding free energy of double-stranded DNA to an anionic surface, with complementary density functional theory calculations of the binding energies of metal ion-ligand complexes. The results support both electrostatic attraction and ion-specific binding. Our study suggests that the correlated interactions between counterions are responsible for attraction between DNA and an anionic surface, but the strength of this attraction is modulated by the identity of the metal ion. We propose a mechanism in which the strength of metal-ligand binding, as well as the preference for particular binding sites, influence both the concentration dependence and the strength of the DNA-surface interactions.
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Affiliation(s)
- Xian Hao
- Department of Chemistry and Biochemistry, School of Natural Sciences, University of California, Merced, California 95343, USA.
- School of Public Health and Jiangxi Provincial Key Laboratory of Disease Prevention and Public Health, Nanchang University, Nanchang, Jiangxi 330006, China
| | - Qufei Gu
- Materials and Biomaterials Science and Engineering, School of Engineering, University of California, Merced, California 95343, USA
| | - Christine Isborn
- Department of Chemistry and Biochemistry, School of Natural Sciences, University of California, Merced, California 95343, USA.
| | - Jesus Rodriguez Vasquez
- Department of Chemistry and Biochemistry, School of Natural Sciences, University of California, Merced, California 95343, USA.
| | - Makenzie Provorse Long
- Department of Chemistry and Biochemistry, Creighton University, Omaha, Nebraska 68178, USA.
| | - Tao Ye
- Department of Chemistry and Biochemistry, School of Natural Sciences, University of California, Merced, California 95343, USA.
- Materials and Biomaterials Science and Engineering, School of Engineering, University of California, Merced, California 95343, USA
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2
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Alizadehmojarad AA, Bachilo SM, Weisman RB. Sequence-Dependent Surface Coverage of ssDNA Coatings on Single-Wall Carbon Nanotubes. J Phys Chem A 2024; 128:5578-5585. [PMID: 38981061 DOI: 10.1021/acs.jpca.4c02809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2024]
Abstract
A combination of experimental measurements and molecular dynamics (MD) simulations was used to investigate how the surfaces of single-wall carbon nanotubes (SWCNTs) are covered by adsorbed ssDNA oligos with different base compositions and lengths. By analyzing the UV absorption spectra of ssDNA-coated SWCNTs before and after coating displacement by a transparent surfactant, the mass ratios of adsorbed ssDNA to SWCNTs were determined for poly-T, poly-C, GT-containing, and AT-containing ssDNA oligos. Based on the measured mass ratios, it is estimated that an average of 20, 22, 26, or 32 carbon atoms are covered by one adsorbed thymine, cytosine, adenine, or guanine nucleotide, respectively. In addition, the UV spectra revealed electronic interactions of varying strengths between the nucleobase aromatic rings and the nanotube π-systems. Short poly-T DNA oligos show stronger π-π stacking interactions with SWCNT surfaces than do short poly-C DNA oligos, whereas both long poly-C and poly-T DNA oligos show strong interactions. These experiments were complemented by MD computations on simulated systems that were constrained to match the measured ssDNA/SWCNT mass ratios. The surface coverages computed from the MD results varied with oligo composition in a pattern that correlates higher measured yields of nanotube fluorescence with greater surface coverage.
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Affiliation(s)
- Ali A Alizadehmojarad
- Department of Chemistry and the Smalley-Curl Institute, Rice University, Houston, Texas 77005, United States
| | - Sergei M Bachilo
- Department of Chemistry and the Smalley-Curl Institute, Rice University, Houston, Texas 77005, United States
| | - R Bruce Weisman
- Department of Chemistry and the Smalley-Curl Institute, Rice University, Houston, Texas 77005, United States
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
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3
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Barinov NA, Ivanov DA, Dubrovin EV, Klinov DV. Atomic force microscopy investigation of DNA denaturation on a highly oriented pyrolytic graphite surface. Int J Biol Macromol 2024; 267:131630. [PMID: 38631581 DOI: 10.1016/j.ijbiomac.2024.131630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 04/06/2024] [Accepted: 04/13/2024] [Indexed: 04/19/2024]
Abstract
Understanding of DNA interaction with carbonaceous surfaces (including graphite, graphene and carbon nanotubes) is important for the development of DNA-based biosensors and other biotechnological devices. Though many issues related to DNA adsorption on graphitic surfaces have been studied, some important aspects of DNA interaction with graphite remain unclear. In this work, we use atomic force microscopy (AFM) equipped with super-sharp cantilevers to analyze the morphology and conformation of relatively long DNA molecule adsorbed on a highly oriented pyrolytic graphite (HOPG) surface. We have revealed the effect of DNA embedding into an organic monolayer of N,N'-(decane-1,10-diyl)-bis(tetraglycinamide) (GM), which may "freeze" DNA conformation on a HOPG surface during drying. The dependence of the mean squared point-to-point distance on the contour length suggests that DNA adsorbs on a bare HOPG by a "kinetic trapping" mechanism. For the first time, we have estimated the unfolded fraction of DNA upon contact with a HOPG surface (24 ± 5 %). The obtained results represent a novel experimental model for investigation of the conformation and morphology of DNA adsorbed on graphitic surfaces and provide with a new insight into DNA interaction with graphite.
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Affiliation(s)
- Nikolay A Barinov
- Moscow Institute of Physics and Technology, Institutskiy Per. 9, Dolgoprudny 141700, Russian Federation; Sirius University of Science and Technology, 1 Olympic Ave, 354340 Sochi, Russian Federation
| | - Dmitry A Ivanov
- Sirius University of Science and Technology, 1 Olympic Ave, 354340 Sochi, Russian Federation; Institut de Sciences des Matériaux de Mulhouse - IS2M, CNRS UMR7361, 15 Jean Starcky, Mulhouse 68057, France
| | - Evgeniy V Dubrovin
- Moscow Institute of Physics and Technology, Institutskiy Per. 9, Dolgoprudny 141700, Russian Federation; Sirius University of Science and Technology, 1 Olympic Ave, 354340 Sochi, Russian Federation; Lomonosov Moscow State University, Leninskie Gory 1 bld. 2, 119991 Moscow, Russian Federation.
| | - Dmitry V Klinov
- Moscow Institute of Physics and Technology, Institutskiy Per. 9, Dolgoprudny 141700, Russian Federation; Sirius University of Science and Technology, 1 Olympic Ave, 354340 Sochi, Russian Federation.
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4
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Gao Y, Wang Y. Interplay of graphene-DNA interactions: Unveiling sensing potential of graphene materials. APPLIED PHYSICS REVIEWS 2024; 11:011306. [PMID: 38784221 PMCID: PMC11115426 DOI: 10.1063/5.0171364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
Graphene-based materials and DNA probes/nanostructures have emerged as building blocks for constructing powerful biosensors. Graphene-based materials possess exceptional properties, including two-dimensional atomically flat basal planes for biomolecule binding. DNA probes serve as excellent selective probes, exhibiting specific recognition capabilities toward diverse target analytes. Meanwhile, DNA nanostructures function as placement scaffolds, enabling the precise organization of molecular species at nanoscale and the positioning of complex biomolecular assays. The interplay of DNA probes/nanostructures and graphene-based materials has fostered the creation of intricate hybrid materials with user-defined architectures. This advancement has resulted in significant progress in developing novel biosensors for detecting DNA, RNA, small molecules, and proteins, as well as for DNA sequencing. Consequently, a profound understanding of the interactions between DNA and graphene-based materials is key to developing these biological devices. In this review, we systematically discussed the current comprehension of the interaction between DNA probes and graphene-based materials, and elucidated the latest advancements in DNA probe-graphene-based biosensors. Additionally, we concisely summarized recent research endeavors involving the deposition of DNA nanostructures on graphene-based materials and explored imminent biosensing applications by seamlessly integrating DNA nanostructures with graphene-based materials. Finally, we delineated the primary challenges and provided prospective insights into this rapidly developing field. We envision that this review will aid researchers in understanding the interactions between DNA and graphene-based materials, gaining deeper insight into the biosensing mechanisms of DNA-graphene-based biosensors, and designing novel biosensors for desired applications.
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Affiliation(s)
- Yanjing Gao
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - Yichun Wang
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, USA
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5
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Kong D, Zhang S, Guo M, Li S, Wang Q, Gou J, Wu Y, Chen Y, Yang Y, Dai C, Tian Z, Wee ATS, Liu Y, Wei D. Ultra-Fast Single-Nucleotide-Variation Detection Enabled by Argonaute-Mediated Transistor Platform. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2307366. [PMID: 37805919 DOI: 10.1002/adma.202307366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 10/03/2023] [Indexed: 10/09/2023]
Abstract
"Test-and-go" single-nucleotide variation (SNV) detection within several minutes remains challenging, especially in low-abundance samples, since existing methods face a trade-off between sensitivity and testing speed. Sensitive detection usually relies on complex and time-consuming nucleic acid amplification or sequencing. Here, a graphene field-effect transistor (GFET) platform mediated by Argonaute protein that enables rapid, sensitive, and specific SNV detection is developed. The Argonaute protein provides a nanoscale binding channel to preorganize the DNA probe, accelerating target binding and rapidly recognizing SNVs with single-nucleotide resolution in unamplified tumor-associated microRNA, circulating tumor DNA, virus RNA, and reverse transcribed cDNA when a mismatch occurs in the seed region. An integrated microchip simultaneously detects multiple SNVs in agreement with sequencing results within 5 min, achieving the fastest SNV detection in a "test-and-go" manner without the requirement of nucleic acid extraction, reverse transcription, and amplification.
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Affiliation(s)
- Derong Kong
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200433, P. R. China
- Laboratory of Molecular Materials and Devices, Fudan University, Shanghai, 200433, P. R. China
| | - Shen Zhang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200433, P. R. China
- Laboratory of Molecular Materials and Devices, Fudan University, Shanghai, 200433, P. R. China
| | - Mingquan Guo
- Department of Laboratory Medicine, Shanghai Public Health Clinical Center, Fudan University, Shanghai, 200433, P. R. China
| | - Shenwei Li
- Shanghai International Travel Healthcare Center, Shanghai, 200335, P. R. China
| | - Qiang Wang
- Shanghai International Travel Healthcare Center, Shanghai, 200335, P. R. China
| | - Jian Gou
- Department of Physics, National University of Singapore, Singapore, 117542, Singapore
| | - Yungen Wu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200433, P. R. China
- Laboratory of Molecular Materials and Devices, Fudan University, Shanghai, 200433, P. R. China
| | - Yiheng Chen
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200433, P. R. China
- Laboratory of Molecular Materials and Devices, Fudan University, Shanghai, 200433, P. R. China
| | - Yuetong Yang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200433, P. R. China
| | - Changhao Dai
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200433, P. R. China
- Laboratory of Molecular Materials and Devices, Fudan University, Shanghai, 200433, P. R. China
| | - Zhengan Tian
- Shanghai International Travel Healthcare Center, Shanghai, 200335, P. R. China
| | - Andrew Thye Shen Wee
- Department of Physics, National University of Singapore, Singapore, 117542, Singapore
| | - Yunqi Liu
- Laboratory of Molecular Materials and Devices, Fudan University, Shanghai, 200433, P. R. China
- Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Dacheng Wei
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200433, P. R. China
- Laboratory of Molecular Materials and Devices, Fudan University, Shanghai, 200433, P. R. China
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6
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H H, Mallajosyula SS. Unveiling DNA Translocation in Pristine Graphene Nanopores: Understanding Pore Clogging via Polarizable Simulations. ACS APPLIED MATERIALS & INTERFACES 2023; 15:55095-55108. [PMID: 37965826 DOI: 10.1021/acsami.3c12262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2023]
Abstract
Graphene has garnered remarkable attention in recent years as an attractive nanopore membrane for rapid and accurate sequencing of DNA. The inherent characteristics of graphene offer exquisite experimental control over pore dimensions, encompassing both the width (pore diameter) and height. Despite these promising prospects, the practical deployment of pristine graphene nanopores for DNA sequencing has encountered a formidable challenge in the form of pore clogging, which is primarily attributed to hydrophobic interactions. However, a comprehensive understanding of the atomistic origins underpinning this clogging phenomenon and the nuanced impact of individual nucleobase identities on clogging dynamics remain an underexplored domain. Elucidating the atomistic intricacies governing pore clogging is pivotal to devising strategies for its mitigation and advancing our understanding of graphene nanopore behavior. We harness Drude polarizable simulations to systematically dissect the nucleobase-dependent mechanisms that play a pivotal role in nanopore clogging. We unveil nucleobase-specific interactions that illuminate the multifaceted roles played by both hydrophobic and electrostatic forces in driving nanopore clogging events. Notably, the Drude simulations also unveil the bias-dependent translocation dynamics and its pivotal role in alleviating pore clogging─a facet that remains significantly underestimated in conventional additive (nonpolarizable) simulations. Our findings underscore the indispensability of incorporating polarizability to faithfully capture the intricate dynamics governing graphene nanopore translocation phenomena, thus deepening our insights into this crucial field.
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Affiliation(s)
- Hemanth H
- Department of Chemistry, Indian Institute of Technology Gandhinagar, Palaj, Gujarat 382355, India
| | - Sairam S Mallajosyula
- Department of Chemistry, Indian Institute of Technology Gandhinagar, Palaj, Gujarat 382355, India
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7
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Hoshikawa Y, Kanno Y, Tawata H, Sagae T, Ishii T, Imoto S, Hagihara S, Wada T, Nagatsugi F, Aziz A, Nishihara H, Kyotani T, Itoh T. Water-Dispersible Carbon Nano-Test Tubes as a Container for Concentrated DNA Molecules. Chemistry 2023; 29:e202301422. [PMID: 37392079 DOI: 10.1002/chem.202301422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 06/27/2023] [Accepted: 06/30/2023] [Indexed: 07/02/2023]
Abstract
Water-dispersible carbon nano-test tubes (CNTTs) with an inner and outer diameter of about 25 and 35 nm, respectively, were prepared by the template technique and then their inner carbon surface was selectively oxidized to introduce carboxy groups. The adsorption behavior of DNA molecules on the oxidized CNTTs (Ox-CNTTs) was examined in the presence of Ca2+ cations. Many DNA molecules are attracted to the inner space of Ox-CNTTs based on the Ca2+ -mediated electrostatic interaction between DNA phosphate groups and carboxylate anions on the inner carbon surface. Moreover, the total net charge of the DNA adsorbed was found to be equal to the total charge of the carboxylate anions. This selective adsorption into the interior of Ox-CNTTs can be explained from the fact that the electrostatic interaction onto the inner concave surface is much stronger than that on the outer convex surface. On the other hand, the desorption of DNA easily occurs whenever Ca2+ cations are removed by washing with deionized water. Thus, each of Ox-CNTTs works well as a nano-container for a large amount of DNA molecules, thereby resulting in the occurrence of DNA enrichment in the nanospace.
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Affiliation(s)
- Yasuto Hoshikawa
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Yasuyuki Kanno
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Hanako Tawata
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Takuya Sagae
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Takafumi Ishii
- International Research and Education Center for Element Science, Faculty of Science and Technology, Gunma University, 1-5-1, Tenjin-cho, Kiryu, Gunma, 376-8515, Japan
| | - Shuhei Imoto
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Shinya Hagihara
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Takehiko Wada
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Fumi Nagatsugi
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Alex Aziz
- Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Hirotomo Nishihara
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai, 980-8577, Japan
- Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Takashi Kyotani
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Tetsuji Itoh
- National Institute of Advanced Industrial Science Technology (AIST), 4-2-1, Nigatake, Miyagino-ku, Sendai, Miyagi, 983-8551, Japan
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8
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MA BO, KIM JINWOO, TUNG STEVE. Single DNA Translocation and Electrical Characterization Based on Atomic Force Microscopy and Nanoelectrodes. IEEE OPEN JOURNAL OF NANOTECHNOLOGY 2022; 3:124-130. [PMID: 37284032 PMCID: PMC10241429 DOI: 10.1109/ojnano.2022.3217108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Precision DNA translocation control is critical for achieving high accuracy in single molecule-based DNA sequencing. In this report, we describe an atomic force microscopy (AFM) based method to linearize a double-stranded DNA strand during the translocation process and characterize the electrical properties of the moving DNA using a platinum (Pt) nanoelectrode gap. In this method, λDNAs were first deposited on a charged mica substrate surface and topographically scanned. A single DNA suitable for translocation was then identified and electrostatically attached to an AFM probe by pressing the probe tip down onto one end of the DNA strand without chemical functionalizations. Next, the DNA strand was lifted off the mica surface by the probe tip. The pulling force required to completely lift off the DNA agreed well with the theoretical DNA adhesion force to a charged mica surface. After liftoff, the captured DNA was translocated at varied speeds across the substrate and ultimately across the Pt nanoelectrode gap for electrical characterizations. Finally, finite element analysis of the effect of the translocating DNA on the conductivity of the nanoelectrode gap was conducted, validating the range of the gap current measured experimentally during the DNA translocation process.
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Affiliation(s)
- BO MA
- Department of Mechanical Engineering, University of Arkansas, Fayetteville, AR 72701 USA
| | - JIN-WOO KIM
- Department of Biological & Agricultural Engineering, University of Arkansas, Fayetteville, AR 72701 USA
- Materials Science and Engineering Program, University of Arkansas, Fayetteville, AR 72701 USA
- Institute for Nanoscience and Engineering, University of Arkansas, Fayetteville, AR 72701 USA
| | - STEVE TUNG
- Department of Mechanical Engineering, University of Arkansas, Fayetteville, AR 72701 USA
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9
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Chen J, Peng Q, Peng X, Zhang H, Zeng H. Probing and Manipulating Noncovalent Interactions in Functional Polymeric Systems. Chem Rev 2022; 122:14594-14678. [PMID: 36054924 DOI: 10.1021/acs.chemrev.2c00215] [Citation(s) in RCA: 45] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Noncovalent interactions, which usually feature tunable strength, reversibility, and environmental adaptability, have been recognized as driving forces in a variety of biological and chemical processes, contributing to the recognition between molecules, the formation of molecule clusters, and the establishment of complex structures of macromolecules. The marriage of noncovalent interactions and conventional covalent polymers offers the systems novel mechanical, physicochemical, and biological properties, which are highly dependent on the binding mechanisms of the noncovalent interactions that can be illuminated via quantification. This review systematically discusses the nanomechanical characterization of typical noncovalent interactions in polymeric systems, mainly through direct force measurements at microscopic, nanoscopic, and molecular levels, which provide quantitative information (e.g., ranges, strengths, and dynamics) on the binding behaviors. The fundamental understandings of intermolecular and interfacial interactions are then correlated to the macroscopic performances of a series of noncovalently bonded polymers, whose functions (e.g., stimuli-responsiveness, self-healing capacity, universal adhesiveness) can be customized through the manipulation of the noncovalent interactions, providing insights into the rational design of advanced materials with applications in biomedical, energy, environmental, and other engineering fields.
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Affiliation(s)
- Jingsi Chen
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Qiongyao Peng
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Xuwen Peng
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Hao Zhang
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Hongbo Zeng
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
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10
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Silva A, Tosatti E, Vanossi A. Critical peeling of tethered nanoribbons. NANOSCALE 2022; 14:6384-6391. [PMID: 35412551 DOI: 10.1039/d2nr00214k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The peeling of an immobile adsorbed membrane is a well-known problem in engineering and macroscopic tribology. In the classic setup, picking up at one extreme and pulling off result in a peeling force that is a decreasing function of the pickup angle. As one end is lifted, the detachment front retracts to meet the immobile tail. At the nanoscale, interesting situations arise with the peeling of graphene nanoribbons (GNRs) on gold, as realized, e.g., by atomic force microscopy. The nanosized system shows a constant-force steady peeling regime, where the tip lifting h produces no retraction of the ribbon detachment point, and just an advancement h of the free tail end. This is opposite to the classic case, where the detachment point retracts and the tail end stands still. Here we characterise, by analytical modeling and numerical simulations, a third, experimentally relevant setup where the nanoribbon, albeit structurally lubric, does not have a freely moving tail end, which is instead elastically tethered. Surprisingly, novel nontrivial scaling exponents appear that regulate the peeling evolution. As the detachment front retracts and the tethered tail is stretched, power laws of h characterize the shrinking of the adhered length, the growth of peeling force and the peeling angle. These exponents precede the final total detachment as a critical point, where the entire ribbon eventually hangs suspended between the tip and the tethering spring. These analytical predictions are confirmed by realistic MD simulations, retaining the full atomistic description, also confirming their survival at finite experimental temperatures.
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Affiliation(s)
- Andrea Silva
- CNR-IOM, Consiglio Nazionale delle Ricerche - Istituto Officina dei Materiali, c/o SISSA Via Bonomea 265, 34136 Trieste, Italy.
- International School for Advanced Studies (SISSA), Via Bonomea 265, 34136 Trieste, Italy
| | - Erio Tosatti
- CNR-IOM, Consiglio Nazionale delle Ricerche - Istituto Officina dei Materiali, c/o SISSA Via Bonomea 265, 34136 Trieste, Italy.
- International School for Advanced Studies (SISSA), Via Bonomea 265, 34136 Trieste, Italy
- The Abdus Salam International Centre for Theoretical Physics (ICTP), Strada Costiera 11, 34151 Trieste, Italy
| | - Andrea Vanossi
- CNR-IOM, Consiglio Nazionale delle Ricerche - Istituto Officina dei Materiali, c/o SISSA Via Bonomea 265, 34136 Trieste, Italy.
- International School for Advanced Studies (SISSA), Via Bonomea 265, 34136 Trieste, Italy
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11
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Chu Y, Qiu J, Wang Y, Wang M, Zhang Y, Han L. Rapid and High-Throughput SARS-CoV-2 RNA Detection without RNA Extraction and Amplification by Using a Microfluidic Biochip. Chemistry 2022; 28:e202104054. [PMID: 35165963 PMCID: PMC9086951 DOI: 10.1002/chem.202104054] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Indexed: 11/24/2022]
Abstract
The ongoing outbreak of the severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2) has spread globally and poses a threat to public health and National economic development. Rapid and high-throughput SARS-CoV-2 RNA detection without the need of RNA extraction and amplification remain a key challenge. In this study, a new SARS-CoV-2 RNA detection strategy using a microfluidic biochip for the rapid and ultrasensitive detection of SARS-CoV-2 without RNA extraction and amplification was developed. This new strategy takes advantage of the specific SARS-CoV-2 RNA and probe DNA reaction in the microfluidic channel, fluorescence signal regulation by nanomaterials, and accurate sample control by the microfluidic chip. It presents an ultralow limit of detection of 600 copies mL-1 in a large linear detection regime from 1 aM to 100 fM. Fifteen samples were simultaneously detected in 40 min without the need for RNA purification and amplification. The detection accuracy of the strategy was validated through quantitative reverse transcription polymerase chain reaction (qRT-PCR), with a recovery of 99-113 %. Therefore, the SARS-CoV-2 RNA detection strategy proposed in this study can potentially be used for the quantitative diagnosis of viral infectious diseases.
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Affiliation(s)
- Yujin Chu
- Institute of Marine Science and TechnologyShandong UniversityQingdaoShandong266237P.R. China
| | - Jiaoyan Qiu
- Institute of Marine Science and TechnologyShandong UniversityQingdaoShandong266237P.R. China
| | - Yihe Wang
- Institute of Marine Science and TechnologyShandong UniversityQingdaoShandong266237P.R. China
| | - Min Wang
- Institute of Marine Science and TechnologyShandong UniversityQingdaoShandong266237P.R. China
| | - Yu Zhang
- Institute of Marine Science and TechnologyShandong UniversityQingdaoShandong266237P.R. China
| | - Lin Han
- Institute of Marine Science and TechnologyShandong UniversityQingdaoShandong266237P.R. China
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12
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Liang Y, Ang WL, Lim RRX, Bonanni A. Exploring graphene oxide intrinsic electroactivity to elucidate the non-covalent interactions with DNA oligonucleotides. Chem Commun (Camb) 2022; 58:2662-2665. [PMID: 35107450 DOI: 10.1039/d1cc06657a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We show here how the electrochemical reduction signal of graphene oxide nanocolloids is inhibited upon the formation of non-covalent interactions with single stranded DNA oligonucleotides. The drop in the reduction current intensity is strongly influenced by the nucleobase sequence, and can therefore be directly correlated to the specific DNA homo-oligonucleotide.
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Affiliation(s)
- Yaquan Liang
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore.
| | - Wei Li Ang
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore.
| | - Rachel Rui Xia Lim
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore.
| | - Alessandra Bonanni
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore.
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13
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Macchia E, Torricelli F, Bollella P, Sarcina L, Tricase A, Di Franco C, Österbacka R, Kovács-Vajna ZM, Scamarcio G, Torsi L. Large-Area Interfaces for Single-Molecule Label-free Bioelectronic Detection. Chem Rev 2022; 122:4636-4699. [PMID: 35077645 DOI: 10.1021/acs.chemrev.1c00290] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Bioelectronic transducing surfaces that are nanometric in size have been the main route to detect single molecules. Though enabling the study of rarer events, such methodologies are not suited to assay at concentrations below the nanomolar level. Bioelectronic field-effect-transistors with a wide (μm2-mm2) transducing interface are also assumed to be not suited, because the molecule to be detected is orders of magnitude smaller than the transducing surface. Indeed, it is like seeing changes on the surface of a one-kilometer-wide pond when a droplet of water falls on it. However, it is a fact that a number of large-area transistors have been shown to detect at a limit of detection lower than femtomolar; they are also fast and hence innately suitable for point-of-care applications. This review critically discusses key elements, such as sensing materials, FET-structures, and target molecules that can be selectively assayed. The amplification effects enabling extremely sensitive large-area bioelectronic sensing are also addressed.
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Affiliation(s)
- Eleonora Macchia
- Faculty of Science and Engineering, Åbo Akademi University, 20500 Turku, Finland
| | - Fabrizio Torricelli
- Dipartimento Ingegneria dell'Informazione, Università degli Studi di Brescia, 25123 Brescia, Italy
| | - Paolo Bollella
- Dipartimento di Chimica, Università degli Studi di Bari "Aldo Moro", 70125 Bari, Italy.,Centre for Colloid and Surface Science - Università degli Studi di Bari "Aldo Moro", 70125 Bari, Italy
| | - Lucia Sarcina
- Dipartimento di Chimica, Università degli Studi di Bari "Aldo Moro", 70125 Bari, Italy
| | - Angelo Tricase
- Dipartimento di Chimica, Università degli Studi di Bari "Aldo Moro", 70125 Bari, Italy
| | - Cinzia Di Franco
- CNR, Istituto di Fotonica e Nanotecnologie, Sede di Bari, 70125 Bari, Italy
| | - Ronald Österbacka
- Faculty of Science and Engineering, Åbo Akademi University, 20500 Turku, Finland
| | - Zsolt M Kovács-Vajna
- Dipartimento Ingegneria dell'Informazione, Università degli Studi di Brescia, 25123 Brescia, Italy
| | - Gaetano Scamarcio
- CNR, Istituto di Fotonica e Nanotecnologie, Sede di Bari, 70125 Bari, Italy.,Dipartimento Interateneo di Fisica "M. Merlin", Università degli Studi di Bari "Aldo Moro", 70125 Bari, Italy
| | - Luisa Torsi
- Faculty of Science and Engineering, Åbo Akademi University, 20500 Turku, Finland.,Dipartimento di Chimica, Università degli Studi di Bari "Aldo Moro", 70125 Bari, Italy.,Centre for Colloid and Surface Science - Università degli Studi di Bari "Aldo Moro", 70125 Bari, Italy
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14
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Binding between an amine cationic surfactant and DNA and surface properties of the resultant aggregates. Biophys Chem 2021; 281:106734. [PMID: 34922213 DOI: 10.1016/j.bpc.2021.106734] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 11/24/2021] [Accepted: 11/26/2021] [Indexed: 11/23/2022]
Abstract
Binding between cetyltrimethylammonium bromide, a cationic surfactant, and a variety of lengths of single stranded DNA was measured using fluorescence polarization and a simple cooperative model was used to obtain dissociation constants on the order of 1 × 10-5 for the aggregates that formed. Aggregation depended on strand length where strands much shorter than 40 nucleotides (for example strands of 24-nucleotides) were too short to form the same size aggregates. Other factors such as salt concentration and temperature also affected aggregate formation: increasing either the salt concentration or performing binding at the highest temperature studied (60 °C) made it more difficult for aggregates to form. Both heating and dilution of aggregates caused the anisotropy signal to decrease, which suggested that the complexes fell apart under these conditions. Force spectroscopy of aggregate surfaces showed that both electrostatic and hydrophobic adhesive forces were present between aggregates and derivatized AFM tips. These findings can be used to better understand the stability of cationic surfactant-DNA aggregates and may provide guidance for lipid nanoparticle design used in vaccine development and therapeutics.
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15
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Dubrovin EV, Klinov DV. Atomic Force Microscopy of Biopolymers on Graphite Surfaces. POLYMER SCIENCE SERIES A 2021. [DOI: 10.1134/s0965545x2106002x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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16
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Sequence-Independent DNA Adsorption on Few-Layered Oxygen-Functionalized Graphene Electrodes: An Electrochemical Study for Biosensing Application. BIOSENSORS 2021; 11:bios11080273. [PMID: 34436075 PMCID: PMC8394360 DOI: 10.3390/bios11080273] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/12/2021] [Accepted: 08/12/2021] [Indexed: 11/18/2022]
Abstract
DNA is strongly adsorbed on oxidized graphene surfaces in the presence of divalent cations. Here, we studied the effect of DNA adsorption on electrochemical charge transfer at few-layered, oxygen-functionalized graphene (GOx) electrodes. DNA adsorption on the inkjet-printed GOx electrodes caused amplified current response from ferro/ferricyanide redox probe at concentration range 1 aM–10 nM in differential pulse voltammetry. We studied a number of variables that may affect the current response of the interface: sequence type, conformation, concentration, length, and ionic strength. Later, we showed a proof-of-concept DNA biosensing application, which is free from chemical immobilization of the probe and sensitive at attomolar concentration regime. We propose that GOx electrodes promise a low-cost solution to fabricate a highly sensitive platform for label-free and chemisorption-free DNA biosensing.
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17
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Viader-Godoy X, Manosas M, Ritort F. Sugar-Pucker Force-Induced Transition in Single-Stranded DNA. Int J Mol Sci 2021; 22:4745. [PMID: 33947069 PMCID: PMC8124619 DOI: 10.3390/ijms22094745] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 04/23/2021] [Accepted: 04/26/2021] [Indexed: 01/16/2023] Open
Abstract
The accurate knowledge of the elastic properties of single-stranded DNA (ssDNA) is key to characterize the thermodynamics of molecular reactions that are studied by force spectroscopy methods where DNA is mechanically unfolded. Examples range from DNA hybridization, DNA ligand binding, DNA unwinding by helicases, etc. To date, ssDNA elasticity has been studied with different methods in molecules of varying sequence and contour length. A dispersion of results has been reported and the value of the persistence length has been found to be larger for shorter ssDNA molecules. We carried out pulling experiments with optical tweezers to characterize the elastic response of ssDNA over three orders of magnitude in length (60-14 k bases). By fitting the force-extension curves (FECs) to the Worm-Like Chain model we confirmed the above trend:the persistence length nearly doubles for the shortest molecule (60 b) with respect to the longest one (14 kb). We demonstrate that the observed trend is due to the different force regimes fitted for long and short molecules, which translates into two distinct elastic regimes at low and high forces. We interpret this behavior in terms of a force-induced sugar pucker conformational transition (C3'-endo to C2'-endo) upon pulling ssDNA.
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Affiliation(s)
| | - Maria Manosas
- Small Biosystems Lab, Condensed Matter Physics Department, Universitat de Barcelona, Carrer de Martí i Franquès 1, 08028 Barcelona, Spain;
| | - Felix Ritort
- Small Biosystems Lab, Condensed Matter Physics Department, Universitat de Barcelona, Carrer de Martí i Franquès 1, 08028 Barcelona, Spain;
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18
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Chu Y, Gao Y, Tang W, Qiang L, Han Y, Gao J, Zhang Y, Liu H, Han L. Attomolar-Level Ultrasensitive and Multiplex microRNA Detection Enabled by a Nanomaterial Locally Assembled Microfluidic Biochip for Cancer Diagnosis. Anal Chem 2021; 93:5129-5136. [PMID: 33720706 DOI: 10.1021/acs.analchem.0c04896] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Non-invasive early diagnosis is of great significance in disease pathologic development and subsequent medical treatments, and microRNA (miRNA) detection has attracted critical attention in early cancer screening and diagnosis. High-throughput, sensitive, economic, and fast miRNA sensing platforms are necessary to realize the low-concentration miRNA detection in clinical diagnosis and biological studies. Here, we developed an attomolar-level ultrasensitive, rapid, and multiple-miRNA simultaneous detection platform enabled by nanomaterial locally assembled microfluidic biochips. This platform presents a large linear detection regime of 1 aM-10 nM, an ultralow detection limit of 0.146 aM with no amplification, a short detection time of 35 min with multiplex miRNA sensing capability, and a small sample volume consumption of 2 μL. The detection results of five miRNAs in real samples from breast cancer patients and healthy humans indicate its excellent capacity for practical applications in early cancer diagnosis. The proposed ultrasensitive, rapid, and multiple-miRNA detection microfluidic biochip platform is a universal miRNA detection approach and an important and valuable tool in early cancer screening and diagnosis as well as biological studies.
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Affiliation(s)
- Yujin Chu
- Institute of Marine Science and Technology, Shandong University, Qingdao, Shandong 266237, China
| | - Yakun Gao
- Institute of Marine Science and Technology, Shandong University, Qingdao, Shandong 266237, China
| | - Wei Tang
- School of Basic Medical Science, Shandong University, Jinan, Shandong 250100, China
| | - Le Qiang
- Institute of Marine Science and Technology, Shandong University, Qingdao, Shandong 266237, China
| | - Yingkuan Han
- Institute of Marine Science and Technology, Shandong University, Qingdao, Shandong 266237, China
| | - Jianwei Gao
- Institute of Marine Science and Technology, Shandong University, Qingdao, Shandong 266237, China
| | - Yu Zhang
- Institute of Marine Science and Technology, Shandong University, Qingdao, Shandong 266237, China
| | - Hong Liu
- State Key Laboratory of Crystal Materials, Center of Bio & Micro/Nano Functional Materials, Shandong University, Jinan, Shandong 250100, China
| | - Lin Han
- Institute of Marine Science and Technology, Shandong University, Qingdao, Shandong 266237, China
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19
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Abstract
Graphene-based FRET aptasensors can be realized only by unique combinations of aptamer that can be freely functionalized by chemical modification, and graphene/graphene oxide that works as an excellent fluorescence acceptor at the same time as aptamer adsorbates. This review describes the principles of the sensor, several applications to microchannel devices, improvement of the sensing performance by molecular design of the aptamer and remarks on future prospects based on an introduction of recent works and achievements, including the author's paper. The sensor employs DNA modified with graphene/graphene oxide at the terminal as the molecular probe. This system is supported by the excellent property of DNA that does not lose the molecular recognition ability even due to a chemical modification at the terminal. I hope that this review will be useful for developing research on higher performance of graphene aptasensors in the future.
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Affiliation(s)
- Yuko Ueno
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University
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20
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Nekrasov N, Yakunina N, Pushkarev AV, Orlov AV, Gadjanski I, Pesquera A, Centeno A, Zurutuza A, Nikitin PI, Bobrinetskiy I. Spectral-Phase Interferometry Detection of Ochratoxin A via Aptamer-Functionalized Graphene Coated Glass. NANOMATERIALS 2021; 11:nano11010226. [PMID: 33467115 PMCID: PMC7830041 DOI: 10.3390/nano11010226] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 01/08/2021] [Accepted: 01/12/2021] [Indexed: 12/17/2022]
Abstract
In this work, we report a novel method of label-free detection of small molecules based on direct observation of interferometric signal change in graphene-modified glasses. The interferometric sensor chips are fabricated via a conventional wet transfer method of CVD-grown graphene onto the glass coverslips, lowering the device cost and allowing for upscaling the sensor fabrication. For the first time, we report the use of graphene functionalized by the aptamer as the bioreceptor, in conjunction with Spectral-Phase Interferometry (SPI) for detection of ochratoxin A (OTA). In a direct assay with an OTA-specific aptamer, we demonstrated a quick and significant change of the optical signal in response to the maximum tolerable level of OTA concentration. The sensor regeneration is possible in urea solution. The developed platform enables a direct method of kinetic analysis of small molecules using a low-cost optical chip with a graphene-aptamer sensing layer.
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Affiliation(s)
- Nikita Nekrasov
- National Research University of Electronic Technology, 124498 Moscow, Russia; (N.N.); (N.Y.)
| | - Natalya Yakunina
- National Research University of Electronic Technology, 124498 Moscow, Russia; (N.N.); (N.Y.)
| | - Averyan V. Pushkarev
- Moscow Institute of Physics and Technology, 9 Institutskii per., Dolgoprudny, 141700 Moscow, Russia; (A.V.P.); (A.V.O.)
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilov St, 119991 Moscow, Russia;
| | - Alexey V. Orlov
- Moscow Institute of Physics and Technology, 9 Institutskii per., Dolgoprudny, 141700 Moscow, Russia; (A.V.P.); (A.V.O.)
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilov St, 119991 Moscow, Russia;
| | - Ivana Gadjanski
- BioSense Institute-Research and Development Institute for Information Technologies in Biosystems, University of Novi Sad, 21000 Novi Sad, Serbia;
| | - Amaia Pesquera
- Graphenea, Avenida de Tolosa 76, 20018 Donostia-San Sebastián, Spain; (A.P.); (A.C.); (A.Z.)
| | - Alba Centeno
- Graphenea, Avenida de Tolosa 76, 20018 Donostia-San Sebastián, Spain; (A.P.); (A.C.); (A.Z.)
| | - Amaia Zurutuza
- Graphenea, Avenida de Tolosa 76, 20018 Donostia-San Sebastián, Spain; (A.P.); (A.C.); (A.Z.)
| | - Petr I. Nikitin
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilov St, 119991 Moscow, Russia;
| | - Ivan Bobrinetskiy
- National Research University of Electronic Technology, 124498 Moscow, Russia; (N.N.); (N.Y.)
- BioSense Institute-Research and Development Institute for Information Technologies in Biosystems, University of Novi Sad, 21000 Novi Sad, Serbia;
- Correspondence:
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21
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Hassanvand Z, Jalali F, Nazari M, Parnianchi F, Santoro C. Carbon Nanodots in Electrochemical Sensors and Biosensors: A Review. ChemElectroChem 2020. [DOI: 10.1002/celc.202001229] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
| | | | - Maryam Nazari
- Faculty of Chemistry Razi University Kermanshah Iran
| | | | - Carlo Santoro
- Department of Chemical Engineering and Analytical Science The University of Manchester The Mill Sackville Street Manchester M13PAL UK
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22
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Sand KK, Jelavić S, Dobberschütz S, Ashby PD, Marshall MJ, Dideriksen K, Stipp SLS, Kerisit SN, Friddle RW, DeYoreo JJ. Mechanistic insight into biopolymer induced iron oxide mineralization through quantification of molecular bonding. NANOSCALE ADVANCES 2020; 2:3323-3333. [PMID: 36134299 PMCID: PMC9417541 DOI: 10.1039/d0na00138d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 06/12/2020] [Indexed: 06/16/2023]
Abstract
Microbial production of iron (oxyhydr)oxides on polysaccharide rich biopolymers occurs on such a vast scale that it impacts the global iron cycle and has been responsible for major biogeochemical events. Yet the physiochemical controls these biopolymers exert on iron (oxyhydr)oxide formation are poorly understood. Here we used dynamic force spectroscopy to directly probe binding between complex, model and natural microbial polysaccharides and common iron (oxyhydr)oxides. Applying nucleation theory to our results demonstrates that if there is a strong attractive interaction between biopolymers and iron (oxyhydr)oxides, the biopolymers decrease the nucleation barriers, thus promoting mineral nucleation. These results are also supported by nucleation studies and density functional theory. Spectroscopic and thermogravimetric data provide insight into the subsequent growth dynamics and show that the degree and strength of water association with the polymers can explain the influence on iron (oxyhydr)oxide transformation rates. Combined, our results provide a mechanistic basis for understanding how polymer-mineral-water interactions alter iron (oxyhydr)oxides nucleation and growth dynamics and pave the way for an improved understanding of the consequences of polymer induced mineralization in natural systems.
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Affiliation(s)
- K K Sand
- Physical Sciences Division, Pacific Northwest National Laboratory Richland WA USA
- Molecular Foundry, Lawrence Berkeley National Laboratory Berkeley CA USA
| | - S Jelavić
- Nano-Science Center, Department of Chemistry, University of Copenhagen Denmark
| | - S Dobberschütz
- Nano-Science Center, Department of Chemistry, University of Copenhagen Denmark
| | - P D Ashby
- Molecular Foundry, Lawrence Berkeley National Laboratory Berkeley CA USA
| | - M J Marshall
- Biologic Sciences Division, Pacific Northwest National Laboratory Richland WA USA
| | - K Dideriksen
- Nano-Science Center, Department of Chemistry, University of Copenhagen Denmark
| | - S L S Stipp
- Nano-Science Center, Department of Chemistry, University of Copenhagen Denmark
| | - S N Kerisit
- Physical Sciences Division, Pacific Northwest National Laboratory Richland WA USA
| | - R W Friddle
- Sandia National Laboratories Livermore California 94550 USA
| | - J J DeYoreo
- Physical Sciences Division, Pacific Northwest National Laboratory Richland WA USA
- Department of Material Science and Engineering, University of Washington Seattle WA USA
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23
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Ma H, Xu Z, Fang H, Lei X. Unexpected sequence adsorption features of polynucleotide ssDNA on graphene oxide. Phys Chem Chem Phys 2020; 22:11740-11746. [PMID: 32409813 DOI: 10.1039/d0cp01066a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The sequence features of single-stranded DNA (ssDNA) adsorbed on a graphene oxide (GO) surface are important for applications of the DNA/GO functional structure in biosensors, biomedicine, and materials science. In this study, molecular dynamics (MD) simulations were used to examine the adsorption of polynucleotide ssDNAs (A12, C12, G12, and T12) and single nucleotides (A, C, G, and T) on the GO surface. For the latter case, the nucleotide-GO interaction energy followed the trend G > A > C > T, even though it was influenced by specific adsorption sites. In the case of polynucleotides, unexpectedly polythymidine (T12) had the strongest interaction with the GO surface. The angle distributions of the adsorbed nucleobases indicated that T12 was more likely to form a quasi-parallel structure with GO compared to A12, C12, or G12. This was attributed to the weakest π-stacking interactions of thymine. Weaker intra-molecular base-stacking interactions made it easier to break the structures of pyrimidine bases relative to those of purine bases. Weaker inter-molecular base-stacking interactions between T12 and the GO surface enabled T12 to adjust its structure easily to a more stable one by slipping on the surface. This result provides a new understanding of polynucleotide ssDNA adsorption on GO surfaces, which will help in the design of functional DNA/GO structure-based platforms.
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Affiliation(s)
- Huishu Ma
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, P.O. Box 800-204, Shanghai, 201800, China
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24
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Jeong S, Pinals RL, Dharmadhikari B, Song H, Kalluri A, Debnath D, Wu Q, Ham MH, Patra P, Landry MP. Graphene Quantum Dot Oxidation Governs Noncovalent Biopolymer Adsorption. Sci Rep 2020; 10:7074. [PMID: 32341425 PMCID: PMC7184744 DOI: 10.1038/s41598-020-63769-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 03/31/2020] [Indexed: 01/06/2023] Open
Abstract
Graphene quantum dots (GQDs) are an allotrope of carbon with a planar surface amenable to functionalization and nanoscale dimensions that confer photoluminescence. Collectively, these properties render GQDs an advantageous platform for nanobiotechnology applications, including optical biosensing and delivery. Towards this end, noncovalent functionalization offers a route to reversibly modify and preserve the pristine GQD substrate, however, a clear paradigm has yet to be realized. Herein, we demonstrate the feasibility of noncovalent polymer adsorption to GQD surfaces, with a specific focus on single-stranded DNA (ssDNA). We study how GQD oxidation level affects the propensity for polymer adsorption by synthesizing and characterizing four types of GQD substrates ranging ~60-fold in oxidation level, then investigating noncovalent polymer association to these substrates. Adsorption of ssDNA quenches intrinsic GQD fluorescence by 31.5% for low-oxidation GQDs and enables aqueous dispersion of otherwise insoluble no-oxidation GQDs. ssDNA-GQD complexation is confirmed by atomic force microscopy, by inducing ssDNA desorption, and with molecular dynamics simulations. ssDNA is determined to adsorb strongly to no-oxidation GQDs, weakly to low-oxidation GQDs, and not at all for heavily oxidized GQDs. Finally, we reveal the generality of the adsorption platform and assess how the GQD system is tunable by modifying polymer sequence and type.
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Affiliation(s)
- Sanghwa Jeong
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Rebecca L Pinals
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Bhushan Dharmadhikari
- Department of Electrical and Computer Engineering & Technology, Minnesota State University, Mankato, MA, 56001, USA
| | - Hayong Song
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, 61005, South Korea
| | - Ankarao Kalluri
- Department of Biomedical Engineering, University of Bridgeport, Bridgeport, CT, 06604, USA
| | - Debika Debnath
- Department of Biomedical Engineering, University of Bridgeport, Bridgeport, CT, 06604, USA
| | - Qi Wu
- Department of Biomedical Engineering, University of Bridgeport, Bridgeport, CT, 06604, USA
| | - Moon-Ho Ham
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, 61005, South Korea
| | - Prabir Patra
- Department of Biomedical Engineering, University of Bridgeport, Bridgeport, CT, 06604, USA. .,Department of Mechanical Engineering, University of Bridgeport, Bridgeport, CT, 06604, USA.
| | - Markita P Landry
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA, 94720, USA. .,Innovative Genomics Institute (IGI), Berkeley, CA, 94720, USA. .,California Institute for Quantitative Biosciences, QB3, University of California, Berkeley, Berkeley, CA, 94720, USA. .,Chan-Zuckerberg Biohub, San Francisco, CA, 94158, USA.
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25
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Lei X, Ma H, Fang H. Length feature of ssDNA adsorption onto graphene oxide with both large unoxidized and oxidized regions. NANOSCALE 2020; 12:6699-6707. [PMID: 32186546 DOI: 10.1039/c9nr10170e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
DNA/GO functional structures have been widely used in biosensors, biomedicine and materials science. However, most studies about DNA/GO functional structures do not take into account the coexistence of both large unoxidized and oxidized regions on GO sheets. This special local structure provides the boundary region, which is the junction area between unoxidized and oxidized regions, and exhibits a special amphiphilic property of the GO sheets. Here based on molecular dynamics simulations, our results predict that the adsorption efficiency of long strand ssDNA molecules adsorbed on GO is 43%. Further analysis has shown that the ssDNA adsorption behaviors on the GO surface are more likely to start in the boundary region, even for 20 mer ssDNA molecules. Looking into the adsorption dynamic process we can see that the hydrogen bonds between ssDNA and GO are very active and easily broken and formed, especially for the boundary region of the GO surface, resulting in easy capture and adsorption of the ssDNA molecules on this region. The result provides insightful understanding of the adsorption behavior of ssDNA molecules on this amphiphilic GO surface and is helpful in the design of DNA/GO functional structure-based biosensors.
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Affiliation(s)
- Xiaoling Lei
- Department of Physics, East China University of Science and Technology, Shanghai 200237, China.
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26
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English MA, Soenksen LR, Gayet RV, de Puig H, Angenent-Mari NM, Mao AS, Nguyen PQ, Collins JJ. Programmable CRISPR-responsive smart materials. Science 2020; 365:780-785. [PMID: 31439791 DOI: 10.1126/science.aaw5122] [Citation(s) in RCA: 207] [Impact Index Per Article: 51.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 06/27/2019] [Indexed: 12/26/2022]
Abstract
Stimuli-responsive materials activated by biological signals play an increasingly important role in biotechnology applications. We exploit the programmability of CRISPR-associated nucleases to actuate hydrogels containing DNA as a structural element or as an anchor for pendant groups. After activation by guide RNA-defined inputs, Cas12a cleaves DNA in the gels, thereby converting biological information into changes in material properties. We report four applications: (i) branched poly(ethylene glycol) hydrogels releasing DNA-anchored compounds, (ii) degradable polyacrylamide-DNA hydrogels encapsulating nanoparticles and live cells, (iii) conductive carbon-black-DNA hydrogels acting as degradable electrical fuses, and (iv) a polyacrylamide-DNA hydrogel operating as a fluidic valve with an electrical readout for remote signaling. These materials allow for a range of in vitro applications in tissue engineering, bioelectronics, and diagnostics.
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Affiliation(s)
- Max A English
- Department of Biological Engineering, Massachusetts Institute of Technology (MIT), Cambridge, MA 02139, USA.,Institute for Medical Engineering and Science, MIT, Cambridge, MA 02139, USA
| | - Luis R Soenksen
- Institute for Medical Engineering and Science, MIT, Cambridge, MA 02139, USA.,Department of Mechanical Engineering, MIT, Cambridge, Cambridge, MA 02139, USA.,Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Raphael V Gayet
- Department of Biological Engineering, Massachusetts Institute of Technology (MIT), Cambridge, MA 02139, USA.,Institute for Medical Engineering and Science, MIT, Cambridge, MA 02139, USA.,Microbiology Graduate Program, MIT, Cambridge, MA 02139, USA
| | - Helena de Puig
- Institute for Medical Engineering and Science, MIT, Cambridge, MA 02139, USA.,Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Nicolaas M Angenent-Mari
- Department of Biological Engineering, Massachusetts Institute of Technology (MIT), Cambridge, MA 02139, USA.,Institute for Medical Engineering and Science, MIT, Cambridge, MA 02139, USA.,Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Angelo S Mao
- Institute for Medical Engineering and Science, MIT, Cambridge, MA 02139, USA.,Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA.,School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| | - Peter Q Nguyen
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA.,School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| | - James J Collins
- Department of Biological Engineering, Massachusetts Institute of Technology (MIT), Cambridge, MA 02139, USA. .,Institute for Medical Engineering and Science, MIT, Cambridge, MA 02139, USA.,Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA.,Synthetic Biology Center, MIT, Cambridge, MA 02139, USA.,Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA.,Harvard-MIT Program in Health Sciences and Technology, Cambridge, MA 02139, USA
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27
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Shankla M, Aksimentiev A. Step-defect guided delivery of DNA to a graphene nanopore. NATURE NANOTECHNOLOGY 2019; 14:858-865. [PMID: 31384038 PMCID: PMC6863603 DOI: 10.1038/s41565-019-0514-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 06/21/2019] [Indexed: 05/22/2023]
Abstract
Precision placement and transport of biomolecules are critical to many single-molecule manipulation and detection methods. One such method is nanopore sequencing, in which the delivery of biomolecules towards a nanopore controls the method's throughput. Using all-atom molecular dynamics, here we show that the precision transport of biomolecules can be realized by utilizing ubiquitous features of graphene surface-step defects that separate multilayer domains. Subject to an external force, we found that adsorbed DNA moved much faster down a step defect than up, and even faster along the defect edge, regardless of whether the motion was produced by a mechanical force or a solvent flow. We utilized this direction dependency to demonstrate a mechanical analogue of an electric diode and a system for delivering DNA molecules to a nanopore. The defect-guided delivery principle can be used for the separation, concentration and storage of scarce biomolecular species, on-demand chemical reactions and nanopore sensing.
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Affiliation(s)
- Manish Shankla
- Department of Physics, University of Illinois, Urbana, IL, USA
| | - Aleksei Aksimentiev
- Department of Physics, Beckman Institute for Advanced Science and Technology, University of Illinois, Urbana, IL, USA.
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28
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Hao Z, Pan Y, Huang C, Wang Z, Zhao X. Sensitive detection of lung cancer biomarkers using an aptameric graphene-based nanosensor with enhanced stability. Biomed Microdevices 2019; 21:65. [PMID: 31273548 DOI: 10.1007/s10544-019-0409-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We present an electrolyte-gated graphene field effect transistor (GFET) nanosensor using aptamer for rapid, highly sensitive and specific detection of a lung cancer biomarker interleukin-6 (IL-6) with enhanced stability. The negatively charged aptamer folds into a compact secondary conformation upon binding with IL-6, thus altering the carrier concentration of graphene and yielding a detectable change in the drain-source current Ids. Aptamer has smaller size than other receptors (e.g. antibodies), making it possible to bring the charged IL-6 more closely to the graphene surface upon affinity binding, thereby enhancing the sensitivity of the detection. Thanks to the higher stability of aptamer over antibodies, which degrade easily with increasing storage time, consistent sensing performance was obtained by our nanosensor over extended-time (>24 h) storage at 25 °C. Additionally, due to the GFET-enabled rapid transduction of the affinity recognition to IL-6, detection of IL-6 can be achieved in several minutes (<10 min). Experimental results indicate that this nanosensor can rapidly and specifically respond to the change in IL-6 levels with high consistency after extended-time storage and a detection limit (DL) down to 139 fM. Therefore, our nanosensor holds great potential for lung cancer diagnosis at its early stage.
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Affiliation(s)
- Zhuang Hao
- Key Laboratory of Micro-systems and Micro-structures Manufacturing, Ministry of Education and School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150001, Heilongjiang, China
| | - Yunlu Pan
- Key Laboratory of Micro-systems and Micro-structures Manufacturing, Ministry of Education and School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150001, Heilongjiang, China.
| | - Cong Huang
- Key Laboratory of Micro-systems and Micro-structures Manufacturing, Ministry of Education and School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150001, Heilongjiang, China
| | - Ziran Wang
- Key Laboratory of Micro-systems and Micro-structures Manufacturing, Ministry of Education and School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150001, Heilongjiang, China
| | - Xuezeng Zhao
- Key Laboratory of Micro-systems and Micro-structures Manufacturing, Ministry of Education and School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150001, Heilongjiang, China
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29
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Mousavi SM, Soroshnia S, Hashemi SA, Babapoor A, Ghasemi Y, Savardashtaki A, Amani AM. Graphene nano-ribbon based high potential and efficiency for DNA, cancer therapy and drug delivery applications. Drug Metab Rev 2019; 51:91-104. [DOI: 10.1080/03602532.2019.1582661] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Seyyed Mojtaba Mousavi
- Department of Medical Nanotechnology School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sadaf Soroshnia
- Department of Chemical Engineering, University of Mohaghegh Ardabili (UMA), Ardabil, Iran
| | - Seyyed Alireza Hashemi
- Department of Medical Nanotechnology School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Aziz Babapoor
- Department of Chemical Engineering, University of Mohaghegh Ardabili (UMA), Ardabil, Iran
| | - Younes Ghasemi
- Department of Medical Nanotechnology School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Amir Savardashtaki
- Department of Medical Biotechnology, Faculty of Advanced Medical Sciences and Technology, Shiraz, Iran
| | - Ali Mohammad Amani
- Department of Medical Nanotechnology School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
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30
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Pawlak R, Vilhena JG, Hinaut A, Meier T, Glatzel T, Baratoff A, Gnecco E, Pérez R, Meyer E. Conformations and cryo-force spectroscopy of spray-deposited single-strand DNA on gold. Nat Commun 2019; 10:685. [PMID: 30737410 PMCID: PMC6368621 DOI: 10.1038/s41467-019-08531-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 01/16/2019] [Indexed: 01/02/2023] Open
Abstract
Cryo-electron microscopy can determine the structure of biological matter in vitrified liquids. However, structure alone is insufficient to understand the function of native and engineered biomolecules. So far, their mechanical properties have mainly been probed at room temperature using tens of pico-newton forces with a resolution limited by thermal fluctuations. Here we combine force spectroscopy and computer simulations in cryogenic conditions to quantify adhesion and intra-molecular properties of spray-deposited single-strand DNA oligomers on Au(111). Sub-nanometer resolution images reveal folding conformations confirmed by simulations. Lifting shows a decay of the measured stiffness with sharp dips every 0.2-0.3 nm associated with the sequential peeling and detachment of single nucleotides. A stiffness of 30-35 N m-1 per stretched repeat unit is deduced in the nano-newton range. This combined study suggests how to better control cryo-force spectroscopy of adsorbed heterogeneous (bio)polymer and to potentially enable single-base recognition in DNA strands only few nanometers long.
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Affiliation(s)
- Rémy Pawlak
- Department of Physics, University of Basel, Klingelbergstrasse 82, 4056, Basel, Switzerland.
| | - J G Vilhena
- Department of Physics, University of Basel, Klingelbergstrasse 82, 4056, Basel, Switzerland.,Departamento de Física Teórica de la Materia Condensada, Universidad Autónoma de Madrid, E-28049, Madrid, Spain
| | - Antoine Hinaut
- Department of Physics, University of Basel, Klingelbergstrasse 82, 4056, Basel, Switzerland
| | - Tobias Meier
- Department of Physics, University of Basel, Klingelbergstrasse 82, 4056, Basel, Switzerland
| | - Thilo Glatzel
- Department of Physics, University of Basel, Klingelbergstrasse 82, 4056, Basel, Switzerland
| | - Alexis Baratoff
- Department of Physics, University of Basel, Klingelbergstrasse 82, 4056, Basel, Switzerland
| | - Enrico Gnecco
- Otto Schott Institute of Materials Research, Friedrich Schiller University Jena, D-07742, Jena, Germany
| | - Rubén Pérez
- Departamento de Física Teórica de la Materia Condensada, Universidad Autónoma de Madrid, E-28049, Madrid, Spain. .,Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, E-28049, Madrid, Spain.
| | - Ernst Meyer
- Department of Physics, University of Basel, Klingelbergstrasse 82, 4056, Basel, Switzerland.
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31
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Delparastan P, Malollari KG, Lee H, Messersmith PB. Direct Evidence for the Polymeric Nature of Polydopamine. Angew Chem Int Ed Engl 2019; 58:1077-1082. [PMID: 30485624 PMCID: PMC6424361 DOI: 10.1002/anie.201811763] [Citation(s) in RCA: 104] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 11/18/2018] [Indexed: 11/07/2022]
Abstract
Inspired by the adhesive proteins of mussels, polydopamine (pDA) has emerged as one of the most widely employed materials for surface functionalization. Despite numerous attempts at characterization, little consensus has emerged regarding whether pDA is a covalent polymer or a noncovalent aggregate of low molecular weight species. Here, we employed single-molecule force spectroscopy (SMFS) to characterize pDA films. Retraction of a pDA-coated cantilever from an oxide surface shows the characteristic features of a polymer with contour lengths of up to 200 nm. pDA polymers are generally weakly bound to the surface through much of their contour length, with occasional "sticky" points. Our findings represent the first direct evidence for the polymeric nature of pDA and provide a foundation upon which to better understand and tailor its physicochemical properties.
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Affiliation(s)
- Peyman Delparastan
- Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, CA, 94720-1760 (USA),
| | | | - Haeshin Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea
| | - Phillip B. Messersmith
- Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, CA, 94720-1760 (USA),
- Department of Bioengineering, University of California, Berkeley and Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley
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32
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Wang L, Wu A, Wei G. Graphene-based aptasensors: from molecule-interface interactions to sensor design and biomedical diagnostics. Analyst 2019. [PMID: 29528071 DOI: 10.1039/c8an00081f] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Graphene-based nanomaterials have been widely utilized to fabricate various biosensors for environmental monitoring, food safety, and biomedical diagnostics. The combination of aptamers with graphene for creating biofunctional nanocomposites improved the sensitivity and selectivity of fabricated biosensors due to the unique molecular recognition and biocompatibility of aptamers. In this review, we highlight recent advances in the design, fabrication, and biomedical sensing application of graphene-based aptasensors within the last five years (2013-current). The typical studies on the biomedical fluorescence, colorimetric, electrochemical, electrochemiluminescence, photoelectrochemical, electronic, and force-based sensing of DNA, proteins, enzymes, small molecules, ions, and others are demonstrated and discussed in detail. More attention is paid to a few key points such as the conjugation of aptamers with graphene materials, the fabrication strategies of sensor architectures, and the importance of aptamers on improving the sensing performances. It is expected that this work will provide preliminary and useful guidance for readers to understand the fabrication of graphene-based biosensors and the corresponding sensing mechanisms in one way, and in another way will be helpful to develop novel high performance aptasensors for biological analysis and detection.
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Affiliation(s)
- Li Wang
- Key Laboratory of Preparation and Application of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, Changchun, 130103, P. R. China.
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33
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Li F, Cai Q, Hao X, Zhao C, Huang Z, Zheng Y, Lin X, Weng S. Insight into the DNA adsorption on nitrogen-doped positive carbon dots. RSC Adv 2019; 9:12462-12469. [PMID: 35515841 PMCID: PMC9063714 DOI: 10.1039/c9ra00881k] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 04/05/2019] [Indexed: 12/13/2022] Open
Abstract
Considerable biosensors have been fabricated on the basis of DNA interaction with carbon nanomaterials, such as graphene oxide (GO) nanosheets. Few studies have focused on the rational design of sensors between carbon dots (CDs) and DNA due to the limited understanding of the real forces behind the adsorption of DNA on CDs. In this work, nitrogen doping-positive CDs (N-CDs), which can quench fluorophore-labeled DNA, were investigated to ascertain the interaction between the CDs and DNA. With reference to DNA adsorption on GO, the adsorption capacity and kinetics of N-CDs for DNA were studied. Desorption of DNA from these surfaces was also measured. Moreover, DNA desorption and anchoring force of N-CDs to DNA were different from those of GO, given that the prepared N-CDs and GO were positively and negatively charged, respectively. Accordingly, DNA was adsorbed on N-CDs mainly via electrostatic adsorption and other forces, such as nucleobase effect, hydrophobic interaction, and van der Waals (vdW) forces. This study enhanced the basic knowledge of DNA adsorption on some CDs for further study in the application of CDs in bioanalysis or biomedicine. With the reference of DNA adsorption on GO, the adsorption capacity, kinetics of N-CDs to DNA were investigated.![]()
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Affiliation(s)
- Fenglan Li
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Fujian Medical University
- Fuzhou 350122
- China
| | - Qianqian Cai
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Fujian Medical University
- Fuzhou 350122
- China
| | - Xiaoli Hao
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Fujian Medical University
- Fuzhou 350122
- China
| | - Chengfei Zhao
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Fujian Medical University
- Fuzhou 350122
- China
| | - Zhengjun Huang
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Fujian Medical University
- Fuzhou 350122
- China
| | - Yanjie Zheng
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Fujian Medical University
- Fuzhou 350122
- China
| | - Xinhua Lin
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Fujian Medical University
- Fuzhou 350122
- China
| | - Shaohuang Weng
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Fujian Medical University
- Fuzhou 350122
- China
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34
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Delparastan P, Malollari KG, Lee H, Messersmith PB. Direct Evidence for the Polymeric Nature of Polydopamine. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201811763] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Peyman Delparastan
- Department of Materials Science and EngineeringUniversity of California, Berkeley Berkeley CA 94720-1760 USA
| | | | - Haeshin Lee
- Department of ChemistryKorea Advanced Institute of Science and Technology (KAIST) Daejeon South Korea
| | - Phillip B. Messersmith
- Department of Materials Science and EngineeringUniversity of California, Berkeley Berkeley CA 94720-1760 USA
- Department of BioengineeringUniversity of California Berkeley USA
- Materials Science DivisionLawrence Berkeley National Laboratory, Berkeley USA
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35
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Hong T, Wang T, Xu YQ. Direct Measurement of π Coupling at the Single-Molecule Level using a Carbon Nanotube Force Sensor. NANO LETTERS 2018; 18:7883-7888. [PMID: 30457874 DOI: 10.1021/acs.nanolett.8b03690] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We report a carbon nanotube (CNT) force sensor that combines a suspended CNT transistor with dual-trap optical tweezers to explore the interactions between two individual molecules in the near-equilibrium regime with sub-piconewton resolution. The directly measured equilibrium force (1.2 ± 0.5 pN) is likely related to the binding force between a CNT and a single DNA base, where two aromatic rings spontaneously attract to each other due to the noncovalent forces between them. On the basis of our force measurements, the binding free energy per base is calculated (∼0.34 eV), which is in good agreement with theoretical simulations. Moreover, three-dimensional scanning photocurrent microscopy enables us to simultaneously monitor the morphology changes of the CNT, leading to a comprehensive reconstruction of the CNT-DNA binding dynamics. These experimental results shed light on the fundamental understanding of the mechanical coupling between CNTs and DNA molecules and, more importantly, provide a new platform for direct observation of intermolecular interfaces at the single-molecule level.
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36
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Zhang H, Ba S, Mahajan D, Lee JY, Ye R, Shao F, Lu L, Li T. Versatile Types of DNA-Based Nanobiosensors for Specific Detection of Cancer Biomarker FEN1 in Living Cells and Cell-Free Systems. NANO LETTERS 2018; 18:7383-7388. [PMID: 30336066 DOI: 10.1021/acs.nanolett.8b03724] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Flap structure-specific endonuclease 1 (FEN1) is overexpressed in various types of human cancer cells and has been recognized as a promising biomarker for cancer diagnosis in the recent years. In order to specifically detect the abundance and activity of this cancer-overexpressed enzyme, different types of DNA-based nanodevices were created during our investigations. It is shown in our studies that these newly designed biosensors are highly sensitive and specific for FEN1 in living cells as well as in cell-free systems. It is expected that these nanoprobes could be useful for monitoring FEN1 activity in human cancer cells, and also for cell-based screening of FEN1 inhibitors as new anticancer drugs.
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Affiliation(s)
- Hao Zhang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences , Nanyang Technological University , Singapore 637371
| | - Sai Ba
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences , Nanyang Technological University , Singapore 637371
| | - Divyanshu Mahajan
- School of Biological Sciences , Nanyang Technological University , Singapore 637551
| | - Jasmine Yiqin Lee
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences , Nanyang Technological University , Singapore 637371
| | - Ruijuan Ye
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences , Nanyang Technological University , Singapore 637371
| | - Fangwei Shao
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences , Nanyang Technological University , Singapore 637371
| | - Lei Lu
- School of Biological Sciences , Nanyang Technological University , Singapore 637551
| | - Tianhu Li
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences , Nanyang Technological University , Singapore 637371
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37
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Wang X, Zhu Y, Olsen TR, Sun N, Zhang W, Pei R, Lin Q. A graphene aptasensor for biomarker detection in human serum. Electrochim Acta 2018; 290:356-363. [PMID: 33551454 PMCID: PMC7861490 DOI: 10.1016/j.electacta.2018.08.062] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This paper presents an affinity graphene nanosensor for detection of biomarkers in undiluted and non-desalted human serum. The affinity nanosensor is a field-effect transistor in which graphene serves as the conducting channel. The graphene surface is sequentially functionalized with a nanolayer of the polymer polyethylene glycol (PEG) and a biomarker-specific aptamer. The aptamer is able to specifically bind with and capture unlabeled biomarkers in serum. A captured biomarker induces a change in the electric conductivity of the graphene, which is measured in a buffer of optimally chosen ionic strength to determine the biomarker concentration. The PEG layer effectively rejects nonspecific adsorption of background molecules in serum while still allowing the aptamer to be readily accessible to serum-borne biomarkers and increases the effective Debye screening length on the graphene surface. Thus, the aptamer-biomarker binding sensitively changes the graphene conductivity, thereby achieving specific and label-free detection of biomarkers with high sensitivity and without the need to dilute or desalt the serum. Experimental results demonstrate that the graphene nanosensor is capable of specifically capturing human immunoglobulin E (IgE), used as a representative biomarker, in human serum in the concentration range of 50 pM-250 nM, with a resolution of 14.5 pM and a limit of detection of 47 pM.
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Affiliation(s)
- Xuejun Wang
- Department of Mechanical Engineering, East China University
of Science and Technology, Shanghai, 200237, China
- Department of Mechanical Engineering, Columbia University,
New York, NY 10027, USA
| | - Yibo Zhu
- Department of Mechanical Engineering, Columbia University,
New York, NY 10027, USA
| | - Timothy R. Olsen
- Department of Mechanical Engineering, Columbia University,
New York, NY 10027, USA
| | - Na Sun
- Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese
Academy of Sciences, Suzhou, Jiangsu, 215123, China
| | - Wenjun Zhang
- Department of Mechanical Engineering, East China University
of Science and Technology, Shanghai, 200237, China
- Department of Mechanical Engineering, University of
Saskatchewan, Saskatoon, S7N 5A9, Canada
| | - Renjun Pei
- Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese
Academy of Sciences, Suzhou, Jiangsu, 215123, China
| | - Qiao Lin
- Department of Mechanical Engineering, Columbia University,
New York, NY 10027, USA
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38
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Islam MN, Gorgannezhad L, Masud MK, Tanaka S, Hossain MSA, Yamauchi Y, Nguyen NT, Shiddiky MJA. Graphene-Oxide-Loaded Superparamagnetic Iron Oxide Nanoparticles for Ultrasensitive Electrocatalytic Detection of MicroRNA. ChemElectroChem 2018. [DOI: 10.1002/celc.201800339] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Md. Nazmul Islam
- School of Environment and Science; Griffith University; Nathan Campus QLD 4111 Australia
- Queensland Micro- and Nanotechnology Centre; Griffith University; Nathan Campus QLD 4111 Australia
| | - Lena Gorgannezhad
- School of Environment and Science; Griffith University; Nathan Campus QLD 4111 Australia
- Queensland Micro- and Nanotechnology Centre; Griffith University; Nathan Campus QLD 4111 Australia
| | - Mostafa Kamal Masud
- Queensland Micro- and Nanotechnology Centre; Griffith University; Nathan Campus QLD 4111 Australia
- Australian Institute for Innovative Materials (AIIM); University of Wollongong; Squires Way North Wollongong NSW 2500 Australia
| | - Shunsuke Tanaka
- Australian Institute for Innovative Materials (AIIM); University of Wollongong; Squires Way North Wollongong NSW 2500 Australia
- International Center for Materials Nanoarchitectonics (WPI-MANA); National Institute for Materials Science (NIMS); 1-1 Namiki Tsukuba, Ibaraki 305-0044 Japan
| | - Md. Shahriar A. Hossain
- Australian Institute for Innovative Materials (AIIM); University of Wollongong; Squires Way North Wollongong NSW 2500 Australia
- School of Mechanical and Mining Engineering; The University of Queensland; Brisbane QLD 4072 Australia
| | - Yusuke Yamauchi
- School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN); The University of Queensland; Brisbane QLD 4072 Australia
- Department of Plant & Environmental New Resources; Kyung Hee University; 1732 Deogyeong-daero Giheunggu, Yongin-si, Gyeonggi-do 446-701 South Korea
| | - Nam-Trung Nguyen
- Queensland Micro- and Nanotechnology Centre; Griffith University; Nathan Campus QLD 4111 Australia
| | - Muhammad J. A. Shiddiky
- School of Environment and Science; Griffith University; Nathan Campus QLD 4111 Australia
- Queensland Micro- and Nanotechnology Centre; Griffith University; Nathan Campus QLD 4111 Australia
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39
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Liu P, Wang S, Liu X, Ding J, Zhou W. Platinated graphene oxide: A nanoplatform for efficient gene-chemo combination cancer therapy. Eur J Pharm Sci 2018; 121:319-329. [PMID: 29906508 DOI: 10.1016/j.ejps.2018.06.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 05/13/2018] [Accepted: 06/11/2018] [Indexed: 02/06/2023]
Abstract
Cisplatin (CisPt) is one of the most effective antitumor drugs against a wide range of solid cancers, and recent studies have indicated that combination of CisPt and RNA interference (RNAi) agents would effectively enhance therapeutic index, while the development of simple yet robust dual-delivery systems still remains a challenge. Here, we demonstrated that platinated graphene oxide is an excellent platform to achieve such goal. Nano-Graphene oxide (NGO) was easily platinated by CisPt, and the resulting CisPt/NGO was characterized by several aspects. As a proof-of-concept, an antisense microRNA-21 (Anti-miR-21) was employed as a potential RNAi agent. While most previous work functionalized NGO with cationic polymers for gene delivery, we demonstrated that platinated NGO is a potent carrier to load Anti-miR-21 with improved capacity and adsorption stability. With Anti-miR-21 loading, the system displayed significantly enhanced cytotoxicity to cancer cells, suggesting a synergistic effect. Finally, the underlying mechanism of the improved efficacy was explored, which can be ascribed to the cell apoptosis induced by Anti-miR-21 for gene silencing. This work demonstrated platinated graphene oxide as an effective nanocarrier to co-deliver CisPt and gene therapy for the treatment of cancer.
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Affiliation(s)
- Peng Liu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410013, China
| | - Shengfeng Wang
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410013, China; Department of Pharmacy, the Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, China
| | - Xuanjun Liu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410013, China
| | - Jinsong Ding
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410013, China
| | - Wenhu Zhou
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410013, China.
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40
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Grebíková L, Whittington SG, Vancso JG. Angle-Dependent Atomic Force Microscopy Single-Chain Pulling of Adsorbed Macromolecules from Planar Surfaces Unveils the Signature of an Adsorption-Desorption Transition. J Am Chem Soc 2018; 140:6408-6415. [PMID: 29712430 PMCID: PMC5968430 DOI: 10.1021/jacs.8b02851] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The adsorption-desorption behavior of polymer chains is at the heart of macromolecular surface science and technology. With the current developments in atomic force microscopy (AFM), it has now become possible to address the desorption problem from the perspective of a single macromolecule. Here, we report on desorption of single polymer chains on planar surfaces by AFM-based single molecule force spectroscopy (SMFS) as a function of the pulling angle with respect to the surface-normal direction. SMFS experiments were performed in water with various substrates using different polymers covalently attached to the AFM probe tip. End-grafting at the AFM tip was achieved by surface-initiated polymerization using initiator functionalized tips. We found that the desorption force increases with a decreasing pulling angle, i.e., an enhanced adhesion of the polymer chain was observed. The magnitude of the desorption force shows a weak angular dependence at pulling angles close to the surface normal. A significant increase of the force is observed at shallower pulling from a certain pulling angle. This behavior carries the signature of an adsorption-desorption transition. The angular dependence of the normalized desorption force exhibits a universal behavior. We compared and interpreted our results using theoretical predictions for single-chain adsorption-desorption transitions.
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Affiliation(s)
- Lucie Grebíková
- Materials Science and Technology of Polymers, MESA+, Institute of Nanotechnology , University of Twente , P.O. Box 217, 7500 AE Enschede , The Netherlands
| | - Stuart G Whittington
- Department of Chemistry , University of Toronto , 80 St. George Street , Toronto , Ontario M5S 3H6 , Canada
| | - Julius G Vancso
- Materials Science and Technology of Polymers, MESA+, Institute of Nanotechnology , University of Twente , P.O. Box 217, 7500 AE Enschede , The Netherlands
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41
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Afrin R, Ganbaatar N, Aono M, Cleaves Ii HJ, Yano TA, Hara M. Size-Dependent Affinity of Glycine and Its Short Oligomers to Pyrite Surface: A Model for Prebiotic Accumulation of Amino Acid Oligomers on a Mineral Surface. Int J Mol Sci 2018; 19:ijms19020365. [PMID: 29370126 PMCID: PMC5855587 DOI: 10.3390/ijms19020365] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 12/23/2017] [Accepted: 12/23/2017] [Indexed: 11/16/2022] Open
Abstract
The interaction strength of progressively longer oligomers of glycine, (Gly), di-Gly, tri-Gly, and penta-Gly, with a natural pyrite surface was directly measured using the force mode of an atomic force microscope (AFM). In recent years, selective activation of abiotically formed amino acids on mineral surfaces, especially that of pyrite, has been proposed as an important step in many origins of life scenarios. To investigate such notions, we used AFM-based force measurements to probe possible non-covalent interactions between pyrite and amino acids, starting from the simplest amino acid, Gly. Although Gly itself interacted with the pyrite surface only weakly, progressively larger unbinding forces and binding frequencies were obtained using oligomers from di-Gly to penta-Gly. In addition to an expected increase of the configurational entropy and size-dependent van der Waals force, the increasing number of polar peptide bonds, among others, may be responsible for this observation. The effect of chain length was also investigated by performing similar experiments using l-lysine vs. poly-l-lysine (PLL), and l-glutamic acid vs. poly-l-glutamic acid. The results suggest that longer oligomers/polymers of amino acids can be preferentially adsorbed on pyrite surfaces.
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Affiliation(s)
- Rehana Afrin
- Chemical Evolution Lab Unit, Earth-Life Science Institute (ELSI), Tokyo Institute of Technology, 2-12-1-IE-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan.
| | - Narangerel Ganbaatar
- Chemical Evolution Lab Unit, Earth-Life Science Institute (ELSI), Tokyo Institute of Technology, 2-12-1-IE-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan.
- School of Materials and Chemical Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan.
| | - Masashi Aono
- Chemical Evolution Lab Unit, Earth-Life Science Institute (ELSI), Tokyo Institute of Technology, 2-12-1-IE-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan.
- Faculty of Environment and Information Studies, Keio University, 5322 Endo, Fujisawa-shi, Kanagawa 252-0882, Japan.
| | - H James Cleaves Ii
- Chemical Evolution Lab Unit, Earth-Life Science Institute (ELSI), Tokyo Institute of Technology, 2-12-1-IE-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan.
| | - Taka-Aki Yano
- Chemical Evolution Lab Unit, Earth-Life Science Institute (ELSI), Tokyo Institute of Technology, 2-12-1-IE-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan.
- School of Materials and Chemical Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan.
| | - Masahiko Hara
- Chemical Evolution Lab Unit, Earth-Life Science Institute (ELSI), Tokyo Institute of Technology, 2-12-1-IE-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan.
- School of Materials and Chemical Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan.
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42
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Tawfik SA, Cui XY, Ringer SP, Stampfl C. TDDFT Study of the Optical Excitation of Nucleic Acid Bases-C 60 Complexes. J Phys Chem A 2017; 121:9058-9063. [PMID: 29111726 DOI: 10.1021/acs.jpca.7b07442] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The potential of C60 as a nucleic acid base (NAB) optical sensor is theoretically explored. We investigate the adsorption of four NABs, namely, adenine, cytosine, guanine, and thymine, on C60 in the gas phase. For the optimal NAB@C60 adsorption configurations, obtained using a dispersion-corrected density functional, we calculate the vis-near-ultraviolet optical response using time-dependent density functional theory. While the isolated C60 and NAB molecules do not exhibit visible optical excitation, we find that C60/NAB conjugation gives rise to distinct spectral features in the visible range. These results suggest that C60 conjugation can be applied for photodetection of individual NABs.
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Affiliation(s)
| | | | | | - C Stampfl
- School of Physics, The University of Sydney , Sydney, New South Wales 2006, Australia
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43
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Hughes ZE, Walsh TR. Structural Disruption of an Adenosine-Binding DNA Aptamer on Graphene: Implications for Aptasensor Design. ACS Sens 2017; 2:1602-1611. [PMID: 29063764 DOI: 10.1021/acssensors.7b00435] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We report on the predicted structural disruption of an adenosine-binding DNA aptamer adsorbed via noncovalent interactions on aqueous graphene. The use of surface-adsorbed biorecognition elements on device substrates is needed for integration in nanofluidic sensing platforms. Upon analyte binding, the conformational change in the adsorbed aptamer may perturb the surface properties, which is essential for the signal generation mechanism in the sensor. However, at present, these graphene-adsorbed aptamer structure(s) are unknown, and are challenging to experimentally elucidate. Here we use molecular dynamics simulations to investigate the structure and analyte-binding properties of this aptamer, in the presence and absence of adenosine, both free in solution and adsorbed at the aqueous graphene interface. We predict this aptamer to support a variety of stable binding modes, with direct base-graphene contact arising from regions located in the terminal bases, the centrally located binding pockets, and the distal loop region. Considerable retention of the in-solution aptamer structure in the adsorbed state indicates that strong intra-aptamer interactions compete with the graphene-aptamer interactions. However, in some adsorbed configurations the analyte adenosines detach from the binding pockets, facilitated by strong adenosine-graphene interactions.
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Affiliation(s)
- Zak E. Hughes
- Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
| | - Tiffany R. Walsh
- Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
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44
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Tang Y, Zhang X, Choi P, Liu Q, Xu Z. Probing Single-Molecule Adhesion of a Stimuli Responsive Oligo(ethylene glycol) Methacrylate Copolymer on a Molecularly Smooth Hydrophobic MoS 2 Basal Plane Surface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:10429-10438. [PMID: 28898088 DOI: 10.1021/acs.langmuir.7b01187] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Molybdenum disulfide (MoS2) has been receiving increasing attention in scientific research due to its unique properties. Up to now, several techniques have been developed to prepare exfoliated nanosize MoS2 dispersions to facilitate its applications. To improve its desired performance, as-prepared MoS2 dispersion needs further appropriate modification by polymers. Thus, understanding polymer-MoS2 interaction is of great scientific importance and practical interest. Here, we report our results on molecular interactions of a biocompatible stimuli-responsive copolymer with the basal plane surface of MoS2 determined using single molecule force spectroscopy (SMFS). Under isothermal conditions, the single-molecule adhesion force of oligo(ethylene glycol) methacrylate copolymer was found to increase from 50 to 75 pN with increasing NaCl concentration from 1 mM to 2 M, as a result of increasing hydrophobicity of the polymers. The theoretical analysis demonstrated that single-molecule adhesion force is determined by two contributions: the adhesion energy per monomer and the entropic free energy of the stretched polymer chain. Further data analysis revealed a significant increase in the adhesion energy per monomer with a negligible change in the other contribution with increasing salt concentration. The hydrophobic attraction (HA) was found to be the main contribution for the higher adhesion energy in electrolyte solutions of higher NaCl concentrations where the zero-frequency of van der Waals interaction were effectively screened. The results illustrate that oligo(ethylene glycol) methacrylate copolymer is a promising polymer for functionalizing MoS2 and that one can simply change the salt concentration to modulate the single-molecule interactions for desired applications.
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Affiliation(s)
- Yuechao Tang
- Department of Chemical and Materials Engineering, University of Alberta , Edmonton, Alberta T6G 1H9, Canada
| | - Xurui Zhang
- Department of Chemical and Materials Engineering, University of Alberta , Edmonton, Alberta T6G 1H9, Canada
| | - Phillip Choi
- Department of Chemical and Materials Engineering, University of Alberta , Edmonton, Alberta T6G 1H9, Canada
| | - Qingxia Liu
- Department of Chemical and Materials Engineering, University of Alberta , Edmonton, Alberta T6G 1H9, Canada
| | - Zhenghe Xu
- Department of Chemical and Materials Engineering, University of Alberta , Edmonton, Alberta T6G 1H9, Canada
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45
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Tehrani M, Moshaei MH, Sarvestani AS. Network Polydispersity and Deformation-Induced Damage in Filled Elastomers. MACROMOL THEOR SIMUL 2017. [DOI: 10.1002/mats.201700038] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mohammad Tehrani
- Department of Mechanical Engineering; Ohio University; Athens OH 45701 USA
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46
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Hughes ZE, Wei G, Drew KLM, Colombi Ciacchi L, Walsh TR. Adsorption of DNA Fragments at Aqueous Graphite and Au(111) via Integration of Experiment and Simulation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:10193-10204. [PMID: 28885033 DOI: 10.1021/acs.langmuir.7b02480] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We combine single molecule force spectroscopy measurements with all-atom metadynamics simulations to investigate the cross-materials binding strength trends of DNA fragments adsorbed at the aqueous graphite C(0001) and Au(111) interfaces. Our simulations predict this adsorption at the level of the nucleobase, nucleoside, and nucleotide. We find that despite challenges in making clear, careful connections between the experimental and simulation data, reasonable consistency between the binding trends between the two approaches and two substrates was evident. On C(0001), our simulations predict a binding trend of dG > dA ≈ dT > dC, which broadly aligns with the experimental trend. On Au(111), the simulation-based binding strength trends reveal stronger adsorption for the purines relative to the pyrimadines, with dG ≈ dA > dT ≈ dC. Moreover, our simulations provide structural insights into the origins of the similarities and differences in adsorption of the nucleic acid fragments at the two interfaces. In particular, our simulation data offer an explanation for the differences observed in the relative binding trend between adenosine and guanine on the two substrates.
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Affiliation(s)
- Zak E Hughes
- Institute for Frontier Materials, Deakin University , Geelong, VIC 3216, Australia
| | - Gang Wei
- Hybrid Materials Interface Group, Faculty of Production Engineering, University of Bremen , D-28359 Bremen, Germany
| | - Kurt L M Drew
- Institute for Frontier Materials, Deakin University , Geelong, VIC 3216, Australia
| | - Lucio Colombi Ciacchi
- Hybrid Materials Interface Group, Faculty of Production Engineering, University of Bremen , D-28359 Bremen, Germany
| | - Tiffany R Walsh
- Institute for Frontier Materials, Deakin University , Geelong, VIC 3216, Australia
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47
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Hao Z, Zhu Y, Wang X, Rotti PG, DiMarco C, Tyler SR, Zhao X, Engelhardt JF, Hone J, Lin Q. Real-Time Monitoring of Insulin Using a Graphene Field-Effect Transistor Aptameric Nanosensor. ACS APPLIED MATERIALS & INTERFACES 2017; 9:27504-27511. [PMID: 28770993 PMCID: PMC7875320 DOI: 10.1021/acsami.7b07684] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
This paper presents an approach to the real-time, label-free, specific, and sensitive monitoring of insulin using a graphene aptameric nanosensor. The nanosensor is configured as a field-effect transistor, whose graphene-based conducting channel is functionalized with a guanine-rich IGA3 aptamer. The negatively charged aptamer folds into a compact and stable antiparallel or parallel G-quadruplex conformation upon binding with insulin, resulting in a change in the carrier density, and hence the electrical conductance, of the graphene. The change in the electrical conductance is then measured to enable the real-time monitoring of insulin levels. Testing has shown that the nanosensor offers an estimated limit of detection down to 35 pM and is functional in Krebs-Ringer bicarbonate buffer, a standard pancreatic islet perfusion medium. These results demonstrate the potential utility of this approach in label-free monitoring of insulin and in timely prediction of accurate insulin dosage in clinical diagnostics.
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Affiliation(s)
- Zhuang Hao
- Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States
- Department of Mechanical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
| | - Yibo Zhu
- Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States
| | - Xuejun Wang
- Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States
| | - Pavana G. Rotti
- Department of Anatomy and Cell Biology, University of Iowa, Iowa City, Iowa 52242, United States
- Department of Biomedical Engineering, University of Iowa, Iowa City, Iowa 52242, United States
| | - Christopher DiMarco
- Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States
| | - Scott R. Tyler
- Department of Anatomy and Cell Biology, University of Iowa, Iowa City, Iowa 52242, United States
| | - Xuezeng Zhao
- Department of Mechanical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
| | - John F. Engelhardt
- Department of Anatomy and Cell Biology, University of Iowa, Iowa City, Iowa 52242, United States
- Department of Biomedical Engineering, University of Iowa, Iowa City, Iowa 52242, United States
| | - James Hone
- Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States
| | - Qiao Lin
- Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States
- Corresponding Author:
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48
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Sun Y, Gao W, Zhao Y, Cao W, Liu Z, Cui G, Tong L, Lei F, Tang B. Visualization and Inhibition of Mitochondria-Nuclear Translocation of Apoptosis Inducing Factor by a Graphene Oxide-DNA Nanosensor. Anal Chem 2017; 89:4642-4647. [PMID: 28359155 DOI: 10.1021/acs.analchem.7b00221] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
High concentrations of oxidized low density lipoprotein (oxLDL) induce aberrant apoptosis of vascular smooth muscle cells (VSMCs) in atherosclerotic plaques. This apoptosis cannot be blocked completely by the inhibition of caspase, and it eventually potentiates plaque disruption and risk for cardiovascular disease. Given the important role of apoptosis inducing factor (AIF) in caspase-independent apoptosis, here we develop an AIF-targeting nanosensor by the assembly of graphene oxide (GO) nanosheets and dye-labeled DNA hybrid structures. This nanosensor selectively localizes in the cytosol of VSMCs, where it exhibits a "turn-off" fluorescence signal. Under oxLDL stimuli, the release of AIF from mitochondria into cytosol liberates the DNA hybrid structures from the surface of GO and results in a "turn-on" fluorescence signal. This nanosensor is shown to possess rapid response, high sensitivity, and selectivity for AIF that enables real-time imaging of AIF translocation in VSMCs. Using this novel nanosensor, a better assessment of the apoptotic level of VSMCs and a more accurate evaluation of the extent of atherosclerotic lesions can be obtained. More importantly, the abundant binding between DNA hybrid structures and AIF inhibits the translocation of AIF into the nucleus and subsequent apoptosis in VSMCs. This inhibition may help stabilize plaque and reduce the risk of heart attack and stroke.
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Affiliation(s)
- Yuhui Sun
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Biomedical Sciences, Shandong Normal University , Jinan, Shandong 250014, P.R. China
| | - Wen Gao
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Biomedical Sciences, Shandong Normal University , Jinan, Shandong 250014, P.R. China
| | - Yujie Zhao
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Biomedical Sciences, Shandong Normal University , Jinan, Shandong 250014, P.R. China
| | - Wenhua Cao
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Biomedical Sciences, Shandong Normal University , Jinan, Shandong 250014, P.R. China
| | - Zhenhua Liu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Biomedical Sciences, Shandong Normal University , Jinan, Shandong 250014, P.R. China
| | - Guanwei Cui
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Biomedical Sciences, Shandong Normal University , Jinan, Shandong 250014, P.R. China
| | - Lili Tong
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Biomedical Sciences, Shandong Normal University , Jinan, Shandong 250014, P.R. China
| | - Fengcai Lei
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Biomedical Sciences, Shandong Normal University , Jinan, Shandong 250014, P.R. China
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Biomedical Sciences, Shandong Normal University , Jinan, Shandong 250014, P.R. China
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49
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Grebíková L, Gojzewski H, Kieviet BD, Klein Gunnewiek M, Vancso GJ. Pulling angle-dependent force microscopy. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2017; 88:033705. [PMID: 28372404 DOI: 10.1063/1.4978452] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this paper, we describe a method allowing one to perform three-dimensional displacement control in force spectroscopy by atomic force microscopy (AFM). Traditionally, AFM force curves are measured in the normal direction of the contacted surface. The method described can be employed to address not only the magnitude of the measured force but also its direction. We demonstrate the technique using a case study of angle-dependent desorption of a single poly(2-hydroxyethyl methacrylate) (PHEMA) chain from a planar silica surface in an aqueous solution. The chains were end-grafted from the AFM tip in high dilution, enabling single macromolecule pull experiments. Our experiments give evidence of angular dependence of the desorption force of single polymer chains and illustrate the added value of introducing force direction control in AFM.
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Affiliation(s)
- L Grebíková
- Materials Science and Technology of Polymers, MESA+, Institute of Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - H Gojzewski
- Materials Science and Technology of Polymers, MESA+, Institute of Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - B D Kieviet
- Materials Science and Technology of Polymers, MESA+, Institute of Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - M Klein Gunnewiek
- Materials Science and Technology of Polymers, MESA+, Institute of Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - G J Vancso
- Materials Science and Technology of Polymers, MESA+, Institute of Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
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50
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Blass J, Albrecht M, Wenz G, Zang YN, Bennewitz R. Single-molecule force spectroscopy of fast reversible bonds. Phys Chem Chem Phys 2017; 19:5239-5245. [DOI: 10.1039/c6cp07532k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cantilever stiffness dominates AFM force spectroscopy of fast reversible bonds. Fast rebinding and fluctuations of compliant linkers are averaged by the slow dynamics of the cantilever.
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Affiliation(s)
- Johanna Blass
- INM – Leibniz Institute for New Materials and Physics Department
- Saarland University
- 66123 Saabrücken
- Germany
| | - Marcel Albrecht
- Organic Macromolecular Chemistry
- Saarland University
- 66123 Saabrücken
- Germany
| | - Gerhard Wenz
- Organic Macromolecular Chemistry
- Saarland University
- 66123 Saabrücken
- Germany
| | - Yan Nan Zang
- Organic Macromolecular Chemistry
- Saarland University
- 66123 Saabrücken
- Germany
| | - Roland Bennewitz
- INM – Leibniz Institute for New Materials and Physics Department
- Saarland University
- 66123 Saabrücken
- Germany
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