1
|
Ye W. Multiple solution solving in plasmon sensing by deep learning: determination of layer refractive index and thickness in one experiment: comment. OPTICS LETTERS 2023; 48:2659. [PMID: 37186733 DOI: 10.1364/ol.480746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
In a recent Letter [Opt. Lett.46, 5667 (2021)10.1364/OL.444442], Du et al. proposed a deep learning method for determining the refractive index (n) and thickness (d) of the surface layer on nanoparticles in a single-particle plasmon sensing experiment. This comment highlights the methodological issues arising in that Letter.
Collapse
|
2
|
Cai H, Wang M, Liu J, Wang X. Theoretical and experimental study of a highly sensitive SPR biosensor based on Au grating and Au film coupling structure. OPTICS EXPRESS 2022; 30:26136-26148. [PMID: 36236810 DOI: 10.1364/oe.461768] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 06/21/2022] [Indexed: 06/16/2023]
Abstract
A high-sensitivity surface plasmon resonance (SPR) sensor based on the coupling of Au grating and Au film is investigated through simulations and experiments. The SPR sensor is designed by using a hybrid method composed of genetic algorithm (GA) and rigorous coupled wave analysis (RCWA). The numerical results indicate the sensor has an angular sensitivity of 397.3°/RIU (refractive index unit), which is approximately 2.81 times higher than the conventional Au-based sensor and it is verified by experiments. Theoretical analysis, by finite-difference time-domain (FDTD) method, demonstrates the co-coupling between surface plasmon polaritons (SPPs) propagating on the surface of Au film and localized surface plasmons (LSPs) in the Au grating nanostructure, improving the sensitivity of the SPR sensor. According to the optimized structural parameters, the proposed sensor is fabricated using e-beam lithography and magnetron sputtering. In addition, the proposed sensor is very sensitive to the detection of small molecules. The limit of detection (LOD) for okadaic acid (OA) is 0.72 ng/mL based on an indirect competitive inhibition method, which is approximately 38 times lower than the conventional Au sensor. Such a high-sensitivity SPR biosensor has potential in the applications of immunoassays and clinical diagnosis.
Collapse
|
3
|
Performance Enhancement of SPR Biosensor Using Graphene–MoS2 Hybrid Structure. NANOMATERIALS 2022; 12:nano12132219. [PMID: 35808053 PMCID: PMC9268646 DOI: 10.3390/nano12132219] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 06/26/2022] [Accepted: 06/26/2022] [Indexed: 02/04/2023]
Abstract
We investigate a high-sensitivity surface plasmon resonance (SPR) biosensor consisting of a Au layer, four-layer MoS2, and monolayer graphene. The numerical simulations, by the transfer matrix method (TMM), demonstrate the sensor has a maximum sensitivity of 282°/RIU, which is approximately 2 times greater than the conventional Au-based SPR sensor. The finite difference time domain (FDTD) indicates that the presence of MoS2 film generates a strong surface electric field and enhances the sensitivity of the proposed SPR sensor. In addition, the influence of the number of MoS2 layers on the sensitivity of the proposed sensor is investigated by simulations and experiments. In the experiment, MoS2 and graphene films are transferred on the Au-based substrate by the PMMA-based wet transfer method, and the fabricated samples are characterized by Raman spectroscopy. Furthermore, the fabricated sensors with the Kretschmann configuration are used to detect okadaic acid (OA). The okadaic acid–bovine serum albumin bioconjugate (OA-BSA) is immobilized on the graphene layer of the sensors to develop a competitive inhibition immunoassay. The results show that the sensor has a very low limit of detection (LOD) of 1.18 ng/mL for OA, which is about 22.6 times lower than that of a conventional Au biosensor. We believe that such a high-sensitivity SPR biosensor has potential applications for clinical diagnosis and immunoassays.
Collapse
|
4
|
Yang Y, Xie H, You J, Ye W. Revisiting the plasmon radiation damping of gold nanorods. Phys Chem Chem Phys 2022; 24:4131-4135. [PMID: 35113102 DOI: 10.1039/d1cp05235g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Noble metal nanoparticles have been utilized for a vast amount of optical applications. For applications that use metal nanoparticles as nanosensors and for optical labeling, higher radiative efficiency is preferred. To get a deeper knowledge about the radiation damping of noble metal nanoparticles, we used gold nanorods with different geometry factors (aspect ratios) as the model system to study. We investigated theoretically how the radiation damping of a nanorod depends on the material, and shape of the particle. Surprisingly, a simple analytical equation describes radiation damping very accurately and allows the disentanglement of the maximal radiation damping parameter for gold nanorods with resonance energy Eres around 1.81 eV (685 nm). We found very good agreement with theoretical predictions and experimental data obtained by single-particle spectroscopy. Our results and approaches may pave the way for designing and optimizing gold nanostructures with higher optical signal and better sensing performance.
Collapse
Affiliation(s)
- Yanhe Yang
- School of Physical Science and Technology, Soochow University, Suzhou 215006, China.
| | - Hao Xie
- School of Physical Science and Technology, Soochow University, Suzhou 215006, China. .,Department of Physics, School of Science, Hainan University, Haikou 570228, China
| | - Jian You
- School of Physical Science and Technology, Soochow University, Suzhou 215006, China.
| | - Weixiang Ye
- School of Physical Science and Technology, Soochow University, Suzhou 215006, China. .,Department of Physics, School of Science, Hainan University, Haikou 570228, China
| |
Collapse
|
5
|
Buder K, Kaefer K, Flietel B, Uzun H, Schroeder T, Sönnichsen C. Integrating Nanosensors into Macroporous Hydrogels for Implantation. ACS APPLIED BIO MATERIALS 2022; 5:465-470. [PMID: 35138094 DOI: 10.1021/acsabm.1c01290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Macroporous hydrogels are an attractive platform for implantable sensors because the network of interconnected macropores facilitates tissue integration. Embedded sensing elements, in our case, plasmonic gold nanoparticles, can transduce the presence, absence, and concentration of biochemical markers to the outside. We present here how to integrate such nanosensors into a macroporous hydrogel while preserving the nanosensor functionality in order to produce implantable sensors. We demonstrate that out of four different polymers, the poly(2-hydroxyethyl methacrylate-poly(ethylene glycole)diacrylate copolymer (pHEMA-PEGDA) results in a working sensor. Our approach of incorporating nanosized sensor elements into a hydrogel matrix generally identifies suitable polymers for implantable sensor systems.
Collapse
Affiliation(s)
- Katja Buder
- Department of Chemistry, Johannes Gutenberg-University of Mainz, Duesbergweg 10-14, Mainz 55128, Germany
| | - Katharina Kaefer
- Department of Chemistry, Johannes Gutenberg-University of Mainz, Duesbergweg 10-14, Mainz 55128, Germany.,Max Planck Graduate Center, Forum Universitatis 2, Building 1111, Mainz 55122, Germany
| | - Bastian Flietel
- Department of Chemistry, Johannes Gutenberg-University of Mainz, Duesbergweg 10-14, Mainz 55128, Germany
| | - Hüseyin Uzun
- Department of Chemistry, Johannes Gutenberg-University of Mainz, Duesbergweg 10-14, Mainz 55128, Germany
| | - Thies Schroeder
- Department of Chemistry, Johannes Gutenberg-University of Mainz, Duesbergweg 10-14, Mainz 55128, Germany
| | - Carsten Sönnichsen
- Department of Chemistry, Johannes Gutenberg-University of Mainz, Duesbergweg 10-14, Mainz 55128, Germany
| |
Collapse
|
6
|
High Sensitivity Surface Plasmon Resonance Sensor Based on Periodic Multilayer Thin Films. NANOMATERIALS 2021; 11:nano11123399. [PMID: 34947748 PMCID: PMC8703543 DOI: 10.3390/nano11123399] [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: 11/22/2021] [Revised: 12/09/2021] [Accepted: 12/10/2021] [Indexed: 01/04/2023]
Abstract
Surface plasmon resonance (SPR) biosensors consisting of alternate layers of silver (Ag) and TiO2 thin film have been proposed as a high sensitivity biosensor. The structure not only prevents the Ag film from oxidation, but also enhances the field inside the structure, thereby improving the performance of the sensor. Genetic algorithm (GA) was used to optimize the proposed structure and its maximum angular sensitivity was 384°/RIU (refractive index unit) at the refractive index environment of 1.3425, which is about 3.12 times that of the conventional Ag-based biosensor. A detailed discussion, based on the finite difference time domain (FDTD) method, revealed that an enhanced evanescent field at the top layer–analyte region results in the ultra-sensitivity characteristic. We expect that the proposed structure can be a suitable biosensor for chemical detection, clinical diagnostics, and biological examination.
Collapse
|
7
|
Gao Z, Song Y, Hsiao TY, He J, Wang C, Shen J, MacLachlan A, Dai S, Singer BH, Kurabayashi K, Chent P. Machine-Learning-Assisted Microfluidic Nanoplasmonic Digital Immunoassay for Cytokine Storm Profiling in COVID-19 Patients. ACS NANO 2021; 15:18023-18036. [PMID: 34714639 PMCID: PMC8577373 DOI: 10.1021/acsnano.1c06623] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 10/25/2021] [Indexed: 05/08/2023]
Abstract
Cytokine storm, known as an exaggerated hyperactive immune response characterized by elevated release of cytokines, has been described as a feature associated with life-threatening complications in COVID-19 patients. A critical evaluation of a cytokine storm and its mechanistic linkage to COVID-19 requires innovative immunoassay technology capable of rapid, sensitive, selective detection of multiple cytokines across a wide dynamic range at high-throughput. In this study, we report a machine-learning-assisted microfluidic nanoplasmonic digital immunoassay to meet the rising demand for cytokine storm monitoring in COVID-19 patients. Specifically, the assay was carried out using a facile one-step sandwich immunoassay format with three notable features: (i) a microfluidic microarray patterning technique for high-throughput, multiantibody-arrayed biosensing chip fabrication; (ii) an ultrasensitive nanoplasmonic digital imaging technology utilizing 100 nm silver nanocubes (AgNCs) for signal transduction; (iii) a rapid and accurate machine-learning-based image processing method for digital signal analysis. The developed immunoassay allows simultaneous detection of six cytokines in a single run with wide working ranges of 1-10,000 pg mL-1 and ultralow detection limits down to 0.46-1.36 pg mL-1 using a minimum of 3 μL serum samples. The whole chip can afford a 6-plex assay of 8 different samples with 6 repeats in each sample for a total of 288 sensing spots in less than 100 min. The image processing method enhanced by convolutional neural network (CNN) dramatically shortens the processing time ∼6,000 fold with a much simpler procedure while maintaining high statistical accuracy compared to the conventional manual counting approach. The immunoassay was validated by the gold-standard enzyme-linked immunosorbent assay (ELISA) and utilized for serum cytokine profiling of COVID-19 positive patients. Our results demonstrate the nanoplasmonic digital immunoassay as a promising practical tool for comprehensive characterization of cytokine storm in patients that holds great promise as an intelligent immunoassay for next generation immune monitoring.
Collapse
Affiliation(s)
- Zhuangqiang Gao
- Materials Research and Education Center, Materials Engineering, Department of Mechanical Engineering, Auburn University, Auburn, Alabama 36849, United States
| | - Yujing Song
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan, 48109, United States
| | - Te Yi Hsiao
- Materials Research and Education Center, Materials Engineering, Department of Mechanical Engineering, Auburn University, Auburn, Alabama 36849, United States
| | - Jiacheng He
- Materials Research and Education Center, Materials Engineering, Department of Mechanical Engineering, Auburn University, Auburn, Alabama 36849, United States
| | - Chuanyu Wang
- Materials Research and Education Center, Materials Engineering, Department of Mechanical Engineering, Auburn University, Auburn, Alabama 36849, United States
| | - Jialiang Shen
- Materials Research and Education Center, Materials Engineering, Department of Mechanical Engineering, Auburn University, Auburn, Alabama 36849, United States
| | - Alana MacLachlan
- Materials Research and Education Center, Materials Engineering, Department of Mechanical Engineering, Auburn University, Auburn, Alabama 36849, United States
| | - Siyuan Dai
- Materials Research and Education Center, Materials Engineering, Department of Mechanical Engineering, Auburn University, Auburn, Alabama 36849, United States
| | - Benjamin H. Singer
- Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, University of Michigan, Ann Arbor, Michigan, 48109, United States
| | - Katsuo Kurabayashi
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan, 48109, United States
- Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, Michigan, 48109, United States
- Michigan Center for Integrative Research in Critical Care, University of Michigan, Ann Arbor, Michigan, 48109, United States
| | - Pengyu Chent
- Materials Research and Education Center, Materials Engineering, Department of Mechanical Engineering, Auburn University, Auburn, Alabama 36849, United States
| |
Collapse
|
8
|
Du Q, Zhang Q, Liu G. Multiple solution solving in plasmon sensing by deep learning: determination of a layer refractive index and thickness in one experiment. OPTICS LETTERS 2021; 46:5667-5670. [PMID: 34780432 DOI: 10.1364/ol.444442] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 10/13/2021] [Indexed: 06/13/2023]
Abstract
Plasmons have received intensive attention owing to their significant spectrum shift in environmental sensing. Experimentally, the same spectral shifts may be caused by different combinations of structural parameters of a plasmonic nanoparticle. This multi-parameter problem cannot be solved by just a single feature analysis, but requires using the full scattering spectrum containing all features of the parameters. In this Letter, a deep learning method for solving multi-parameter problems is proposed based on the layer refractive index (n) and layer thickness (d) sensing of different nanorods and nanospheres. The full scattering spectrum can be theoretically simulated, precisely predicted using a well-trained deep learning method, and experimentally obtained using a homemade dark-field microscope. An error analysis of the simulation and experimental results indicates that this method is a potential way to determine n and d and further solve multi-parameter in plasmon sensing.
Collapse
|
9
|
Ye W, Yu M, Wang F, Li Y, Wang C. Multiplexed detection of heavy metal ions by single plasmonic nanosensors. Biosens Bioelectron 2021; 196:113688. [PMID: 34700264 DOI: 10.1016/j.bios.2021.113688] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 09/21/2021] [Accepted: 10/01/2021] [Indexed: 11/28/2022]
Abstract
Detection of multiple analytes simultaneously in small liquid samples with high efficiency and precision is highly important to the fields like water quality monitoring. In this letter, we present a multiplexed nanosensors with position-encoded aptamer functionalized gold nanorods for heavy metal ions detection. The individual gold nanorods respond specifically to two different heavy metal ions (Pb2+ and Hg2+) with a spectral shift in the scattering spectrum. We used a home-built spectral imaging dark-field microscope to measure the response of thousands of single plasmonic nanosensors with relatively high time resolution and precision. To explore the performance and limit of detection (LOD) of our nanosensor and setup, we recorded the concentration-dependent response of our position-encoded nanosensors with a series of mixture solutions that contain different concentrations of Hg2+ and Pb2+ ions. The LOD levels of our system are around 5 nM for Pb2+ ions and 1 nM for Hg2+ ions. Our method and results demostrate the nanomolar sensitivity and the potential to detect more different heavy metal ions.
Collapse
Affiliation(s)
- Weixiang Ye
- Department of Physics, School of Science, Hainan University, Haikou, 570228, China; School of Physical Science and Technology, Soochow University, Suzhou, 215006, China.
| | - Minghuai Yu
- Department of Physics, School of Science, Hainan University, Haikou, 570228, China
| | - Fuquan Wang
- Tianjin Key Laboratory of Wireless Mobile Communications and Power Transmission, College of Electronic and Communication Engineering, Tianjin Normal University, Tianjin, 300387, China; Semiconductor Manufacturing International Corporation (SMIC), Tianjin, 300385, China
| | - Yijun Li
- Center for Sensor Technology of Environment and Health, School of Environment, Tsinghua University, Beijing, 100084, China
| | - Cheng Wang
- Tianjin Key Laboratory of Wireless Mobile Communications and Power Transmission, College of Electronic and Communication Engineering, Tianjin Normal University, Tianjin, 300387, China; Center for Sensor Technology of Environment and Health, School of Environment, Tsinghua University, Beijing, 100084, China.
| |
Collapse
|
10
|
Dahlin A. Biochemical Sensing with Nanoplasmonic Architectures: We Know How but Do We Know Why? ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2021; 14:281-297. [PMID: 33761272 DOI: 10.1146/annurev-anchem-091420-090751] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Here, the research field of nanoplasmonic sensors is placed under scrutiny, with focus on affinity-based detection using refractive index changes. This review describes how nanostructured plasmonic sensors can deliver unique advantages compared to the established surface plasmon resonance technique, where a planar metal surface is used. At the same time, it shows that these features are actually only useful in quite specific situations. Recent trends in the field are also discussed and some devices that claim extraordinary performance are questioned. It is argued that the most important challenges are related to limited receptor affinity and nonspecific binding rather than instrumental performance. Although some nanoplasmonic sensors may be useful in certain situations, it seems likely that conventional surface plasmon resonance will continue to dominate biomolecular interaction analysis. For detection of analytes in complex samples, plasmonics may be an important tool, but probably not in the form of direct refractometric detection.
Collapse
Affiliation(s)
- Andreas Dahlin
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 41296 Gothenburg, Sweden;
| |
Collapse
|
11
|
Staniszewska T, Szkulmowski M, Morawiec S. Computational Optimization of the Size of Gold Nanorods for Single-Molecule Plasmonic Biosensors Operating in Scattering and Absorption Modes. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2021; 125:14765-14777. [PMID: 34484550 PMCID: PMC8411831 DOI: 10.1021/acs.jpcc.1c02510] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 06/17/2021] [Indexed: 06/13/2023]
Abstract
We present a comprehensive computational study on the optimization of the size of gold nanorods for single-molecule plasmonic sensing in terms of optical refractive index sensitivity. We construct an experimentally relevant model of single-molecule-single-nanoparticle sensor based on spherically capped gold nanorods, tip-specific functionalization and passivation layers, and biotin-streptavidin affinity system. We introduce a universal figure of merit for the sensitivity, termed contrast-to-noise ratio (CNR), which relates the change of measurable signal caused by the discrete molecule binding events to the inherent measurement noise. We investigate three distinct sensing modalities relying on direct spectral measurements, monitoring of scattering intensity at fixed wavelength and photothermal effect. By considering a shot-noise-limited performance of an experimental setup, we demonstrate the existence of an optimum nanorod size providing the highest sensitivity for each sensing technique. The optimization at constant illumination intensity (i.e., low-power applications) yields similar values of approximately 20 × 80 nm2 for each considered sensing technique. Second, we investigate the impact of geometrical and material parameters of the molecule and the functionalization layer on the sensitivity. Finally, we discuss the variable illumination intensity for each nanorod size with the steady-state temperature increase as its limiting factor (i.e., high-power applications).
Collapse
|
12
|
Peng X, Kotnala A, Rajeeva BB, Wang M, Yao K, Bhatt N, Penley D, Zheng Y. Plasmonic Nanotweezers and Nanosensors for Point-of-Care Applications. ADVANCED OPTICAL MATERIALS 2021; 9:2100050. [PMID: 34434691 PMCID: PMC8382230 DOI: 10.1002/adom.202100050] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Indexed: 05/12/2023]
Abstract
The capabilities of manipulating and analyzing biological cells, bacteria, viruses, DNAs, and proteins at high resolution are significant in understanding biology and enabling early disease diagnosis. We discuss progress in developments and applications of plasmonic nanotweezers and nanosensors where the plasmon-enhanced light-matter interactions at the nanoscale improve the optical manipulation and analysis of biological objects. Selected examples are presented to illustrate their design and working principles. In the context of plasmofluidics, which merges plasmonics and fluidics, the integration of plasmonic nanotweezers and nanosensors with microfluidic systems for point-of-care (POC) applications is envisioned. We provide our perspectives on the challenges and opportunities in further developing and applying the plasmofluidic POC devices.
Collapse
Affiliation(s)
- Xiaolei Peng
- Materials Science & Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, TX 78712, USA
| | - Abhay Kotnala
- Materials Science & Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, TX 78712, USA
| | - Bharath Bangalore Rajeeva
- Materials Science & Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, TX 78712, USA
| | - Mingsong Wang
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Kan Yao
- Materials Science & Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, TX 78712, USA
| | - Neel Bhatt
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Daniel Penley
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Yuebing Zheng
- Materials Science & Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, TX 78712, USA
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| |
Collapse
|
13
|
Celiksoy S, Ye W, Ahijado-Guzmán R, Sönnichsen C. Single Out-of-Resonance Dielectric Nanoparticles as Molecular Sensors. ACS Sens 2021; 6:716-721. [PMID: 33617229 DOI: 10.1021/acssensors.0c02629] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Light scattering from single nanoparticles and nanostructures is a commonly used readout method for nanosensors. Increasing the spectral sensitivity of resonant nanosensors to changes in their local surrounding has been the focus of many studies. Switching from spectral to intensity monitoring allows one to investigate nonresonant or out-of-resonance dielectric nanoparticles. Here, we systematically compared such dielectric silica nanoparticles with plasmonic gold nanorods by deriving analytical expressions and by performing experiments. The experiments show a similar sensitivity for the detection of an adsorbate layer for both particle types, which is in good agreement with theory. The flat spectral response of dielectric silica nanoparticles simplifies the choice of illumination wavelength. Furthermore, such dielectric nanoparticles can be made from many oxides, polymers, and even biological assemblies, broadening the choice of materials for the nanosensor.
Collapse
Affiliation(s)
- Sirin Celiksoy
- Department of Chemistry, University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Weixiang Ye
- Department of Chemistry, University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
- Graduate School of Materials Science in Mainz, Staudinger Weg 9, 55128 Mainz, Germany
| | - Rubén Ahijado-Guzmán
- Department of Chemistry, University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Carsten Sönnichsen
- Department of Chemistry, University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| |
Collapse
|
14
|
Celiksoy S, Ye W, Wandner K, Kaefer K, Sönnichsen C. Intensity-Based Single Particle Plasmon Sensing. NANO LETTERS 2021; 21:2053-2058. [PMID: 33617258 DOI: 10.1021/acs.nanolett.0c04702] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Plasmon sensors respond to local changes of their surrounding environment with a shift in their resonance wavelength. This response is usually detected by measuring light scattering spectra to determine the resonance wavelength. However, single wavelength detection has become increasingly important because it simplifies the setup, increases speed, and improves statistics. Therefore, we investigated theoretically how the sensitivity toward such single wavelength scattering intensity changes depend on the material and shape of the plasmonic sensor. Surprisingly, simple equations describe this intensity sensitivity very accurately and allow us to distinguish the various contributions: Rayleigh scattering, dielectric contrast, plasmon shift, and frequency-dependent plasmon bulk damping. We find very good agreement of theoretical predictions and experimental data obtained by single particle spectroscopy.
Collapse
Affiliation(s)
- Sirin Celiksoy
- Department of Chemistry, University of Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Weixiang Ye
- Department of Chemistry, University of Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Karl Wandner
- Department of Chemistry, University of Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Katharina Kaefer
- Department of Chemistry, University of Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Carsten Sönnichsen
- Department of Chemistry, University of Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| |
Collapse
|
15
|
Du Q, Dou Z, Zhang W, Krüger K, Zhao S, Yue Z, Liu G. Investigation of electron transfer between single plasmon and graphene by dark field spectroscopy. NANOTECHNOLOGY 2021; 32:085707. [PMID: 33203812 DOI: 10.1088/1361-6528/abcb7b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We investigated the electron transfer time between single plasmonic gold nanoparticles and graphene with our home-build spectral imaging dark-field microscope. The process of electron transfer is supposed to be shuttling of hot electrons on the nanoparticle-graphene interface, resulting in a slight broadening of the scattering spectrum. For detecting the minor spectrum broadening, we firstly characterized our setup systematically and then calibrated its intrinsic error. We found the mechanism of a common but normally neglected setup error, scattering spectrum broadening, which is caused by the bandwidth of the incident light and could exist in most fast dark-field microscopy setups. We corrected the linewidth of plasmon scattering spectra theoretically by both numerical and analytical solution, and then realized it experimentally by tuning the bandwidth of the incident light. After calibration, we revisited scattering spectra of 700 small aspect ratio nanorods on glass and monolayer graphene revealing a typical 14.3 meV linewidth broadening. Furthermore, we measured four other kinds of gold nanoparticles on glass, mono- and bilayer graphene for deeper understanding of the electron transfer. A common linewidth broadening is found for each kind of particle agreeing well with previous theory. However, an unconventional linewidth narrowing is also discovered for big particles whose resonance wavelength is close to the near infrared region. It implies a competitive mechanism in the electron transfer process which could not only increase the damping of small particles, causing a linewidth broadening, but also simplify the electric field pattern for big particles, leading to a linewidth narrowing, according to our Mie theory simulation.
Collapse
Affiliation(s)
- Qian Du
- Department of Microelectronics, Nankai University, 300071 Tianjin, People's Republic of China
- Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Nankai University, 330350 Tianjin, People's Republic of China
| | - Zheng Dou
- Department of Microelectronics, Nankai University, 300071 Tianjin, People's Republic of China
- Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Nankai University, 330350 Tianjin, People's Republic of China
| | - Wenjia Zhang
- Department of Microelectronics, Nankai University, 300071 Tianjin, People's Republic of China
- Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Nankai University, 330350 Tianjin, People's Republic of China
| | - Katja Krüger
- Department of Chemistry, Johannes Gutenberg-University of Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Shuang Zhao
- Department of Microelectronics, Nankai University, 300071 Tianjin, People's Republic of China
| | - Zhao Yue
- Department of Microelectronics, Nankai University, 300071 Tianjin, People's Republic of China
| | - Guohua Liu
- Department of Microelectronics, Nankai University, 300071 Tianjin, People's Republic of China
- Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Nankai University, 330350 Tianjin, People's Republic of China
| |
Collapse
|
16
|
Pellas V, Hu D, Mazouzi Y, Mimoun Y, Blanchard J, Guibert C, Salmain M, Boujday S. Gold Nanorods for LSPR Biosensing: Synthesis, Coating by Silica, and Bioanalytical Applications. BIOSENSORS 2020; 10:E146. [PMID: 33080925 PMCID: PMC7603250 DOI: 10.3390/bios10100146] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/12/2020] [Accepted: 10/13/2020] [Indexed: 12/20/2022]
Abstract
Nanoparticles made of coinage metals are well known to display unique optical properties stemming from the localized surface plasmon resonance (LSPR) phenomenon, allowing their use as transducers in various biosensing configurations. While most of the reports initially dealt with spherical gold nanoparticles owing to their ease of synthesis, the interest in gold nanorods (AuNR) as plasmonic biosensors is rising steadily. These anisotropic nanoparticles exhibit, on top of the LSPR band in the blue range common with spherical nanoparticles, a longitudinal LSPR band, in all respects superior, and in particular in terms of sensitivity to the surrounding media and LSPR-biosensing. However, AuNRs synthesis and their further functionalization are less straightforward and require thorough processing. In this paper, we intend to give an up-to-date overview of gold nanorods in LSPR biosensing, starting from a critical review of the recent findings on AuNR synthesis and the main challenges related to it. We further highlight the various strategies set up to coat AuNR with a silica shell of controlled thickness and porosity compatible with LSPR-biosensing. Then, we provide a survey of the methods employed to attach various bioreceptors to AuNR. Finally, the most representative examples of AuNR-based LSPR biosensors are reviewed with a focus put on their analytical performances.
Collapse
Affiliation(s)
- Vincent Pellas
- Laboratoire de Réactivité de Surface (LRS), Sorbonne Université, CNRS, UMR 7197, 4 Place Jussieu, F-75005 Paris, France; (V.P.); (D.H.); (Y.M.); (Y.M.); (J.B.); (C.G.)
- Institut Parisien de Chimie Moléculaire (IPCM), Sorbonne Université, CNRS, 4 Place Jussieu, F-75005 Paris, France
| | - David Hu
- Laboratoire de Réactivité de Surface (LRS), Sorbonne Université, CNRS, UMR 7197, 4 Place Jussieu, F-75005 Paris, France; (V.P.); (D.H.); (Y.M.); (Y.M.); (J.B.); (C.G.)
| | - Yacine Mazouzi
- Laboratoire de Réactivité de Surface (LRS), Sorbonne Université, CNRS, UMR 7197, 4 Place Jussieu, F-75005 Paris, France; (V.P.); (D.H.); (Y.M.); (Y.M.); (J.B.); (C.G.)
| | - Yoan Mimoun
- Laboratoire de Réactivité de Surface (LRS), Sorbonne Université, CNRS, UMR 7197, 4 Place Jussieu, F-75005 Paris, France; (V.P.); (D.H.); (Y.M.); (Y.M.); (J.B.); (C.G.)
| | - Juliette Blanchard
- Laboratoire de Réactivité de Surface (LRS), Sorbonne Université, CNRS, UMR 7197, 4 Place Jussieu, F-75005 Paris, France; (V.P.); (D.H.); (Y.M.); (Y.M.); (J.B.); (C.G.)
| | - Clément Guibert
- Laboratoire de Réactivité de Surface (LRS), Sorbonne Université, CNRS, UMR 7197, 4 Place Jussieu, F-75005 Paris, France; (V.P.); (D.H.); (Y.M.); (Y.M.); (J.B.); (C.G.)
| | - Michèle Salmain
- Institut Parisien de Chimie Moléculaire (IPCM), Sorbonne Université, CNRS, 4 Place Jussieu, F-75005 Paris, France
| | - Souhir Boujday
- Laboratoire de Réactivité de Surface (LRS), Sorbonne Université, CNRS, UMR 7197, 4 Place Jussieu, F-75005 Paris, France; (V.P.); (D.H.); (Y.M.); (Y.M.); (J.B.); (C.G.)
| |
Collapse
|
17
|
Celiksoy S, Ye W, Wandner K, Schlapp F, Kaefer K, Ahijado-Guzmán R, Sönnichsen C. Plasmonic Nanosensors for the Label-Free Imaging of Dynamic Protein Patterns. J Phys Chem Lett 2020; 11:4554-4558. [PMID: 32436712 DOI: 10.1021/acs.jpclett.0c01400] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We introduce a new approach to monitor the dynamics and spatial patterns of biological molecular assemblies. Our molecular imaging method relies on plasmonic gold nanoparticles as point-like detectors and requires no labeling of the molecules. We show spatial resolution of up to 5 μm and 30 ms temporal resolution, which is comparable to wide-field fluorescence microscopy, while requiring only readily available gold nanoparticles and a dark-field optical microscope. We demonstrate the method on MinDE proteins attaching to and detaching from lipid membranes of different composition for 24 h. We foresee our new imaging method as an indispensable tool in advanced molecular biology and biophysics laboratories around the world.
Collapse
Affiliation(s)
- Sirin Celiksoy
- Institute of Physical Chemistry, University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Weixiang Ye
- Institute of Physical Chemistry, University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Karl Wandner
- Institute of Physical Chemistry, University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Felix Schlapp
- Institute of Physical Chemistry, University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Katharina Kaefer
- Institute of Physical Chemistry, University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Rubén Ahijado-Guzmán
- Institute of Physical Chemistry, University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Carsten Sönnichsen
- Institute of Physical Chemistry, University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| |
Collapse
|
18
|
Garg A, Orru R, Ye W, Distler U, Chojnacki JE, Köhn M, Tenzer S, Sönnichsen C, Wolf E. Structural and mechanistic insights into the interaction of the circadian transcription factor BMAL1 with the KIX domain of the CREB-binding protein. J Biol Chem 2019; 294:16604-16619. [PMID: 31515273 DOI: 10.1074/jbc.ra119.009845] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 08/30/2019] [Indexed: 12/13/2022] Open
Abstract
The mammalian CLOCK:BMAL1 transcription factor complex and its coactivators CREB-binding protein (CBP)/p300 and mixed-lineage leukemia 1 (MLL1) critically regulate circadian transcription and chromatin modification. Circadian oscillations are regulated by interactions of BMAL1's C-terminal transactivation domain (TAD) with the KIX domain of CBP/p300 (activating) and with the clock protein CRY1 (repressing) as well as by the BMAL1 G-region preceding the TAD. Circadian acetylation of Lys537 within the G-region enhances repressive BMAL1-TAD-CRY1 interactions. Here, we characterized the interaction of the CBP-KIX domain with BMAL1 proteins, including the BMAL1-TAD, parts of the G-region, and Lys537 Tethering the small compound 1-10 in the MLL-binding pocket of the CBP-KIX domain weakened BMAL1 binding, and MLL1-bound KIX did not form a ternary complex with BMAL1, indicating that the MLL-binding pocket is important for KIX-BMAL1 interactions. Small-angle X-ray scattering (SAXS) models of BMAL1 and BMAL1:KIX complexes revealed that the N-terminal BMAL1 G-region including Lys537 forms elongated extensions emerging from the bulkier BMAL1-TAD:KIX core complex. Fitting high-resolution KIX domain structures into the SAXS-derived envelopes suggested that the G-region emerges near the MLL-binding pocket, further supporting a role of this pocket in BMAL1 binding. Additionally, mutations in the second CREB-pKID/c-Myb-binding pocket of the KIX domain moderately impacted BMAL1 binding. The BMAL1(K537Q) mutation mimicking Lys537 acetylation, however, did not affect the KIX-binding affinity, in contrast to its enhancing effect on CRY1 binding. Our results significantly advance the mechanistic understanding of the protein interaction networks controlling CLOCK:BMAL1- and CBP-dependent gene regulation in the mammalian circadian clock.
Collapse
Affiliation(s)
- Archit Garg
- Institute of Molecular Biology (IMB), Ackermannweg 4, 55128 Mainz, Germany.,Institute of Molecular Physiology, Johannes Gutenberg-University of Mainz, 55128 Mainz, Germany
| | - Roberto Orru
- Institute of Molecular Physiology, Johannes Gutenberg-University of Mainz, 55128 Mainz, Germany
| | - Weixiang Ye
- Institute of Physical Chemistry, Johannes Gutenberg-University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Ute Distler
- Institute of Immunology, University Medical Center of the Johannes-Gutenberg University Mainz, 55131 Mainz, Germany
| | | | - Maja Köhn
- European Molecular Biology Laboratory, 69117 Heidelberg, Germany
| | - Stefan Tenzer
- Institute of Immunology, University Medical Center of the Johannes-Gutenberg University Mainz, 55131 Mainz, Germany
| | - Carsten Sönnichsen
- Institute of Physical Chemistry, Johannes Gutenberg-University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Eva Wolf
- Institute of Molecular Biology (IMB), Ackermannweg 4, 55128 Mainz, Germany .,Institute of Molecular Physiology, Johannes Gutenberg-University of Mainz, 55128 Mainz, Germany
| |
Collapse
|
19
|
Zopf D, Pittner A, Dathe A, Grosse N, Csáki A, Arstila K, Toppari JJ, Schott W, Dontsov D, Uhlrich G, Fritzsche W, Stranik O. Plasmonic Nanosensor Array for Multiplexed DNA-based Pathogen Detection. ACS Sens 2019; 4:335-343. [PMID: 30657315 DOI: 10.1021/acssensors.8b01073] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
In this research we introduce a plasmonic nanoparticle based optical biosensor for monitoring of molecular binding events. The sensor utilizes spotted gold nanoparticle arrays as sensing platform. The nanoparticle spots are functionalized with capture DNA sequences complementary to the analyte (target) DNA. Upon incubation with the target sequence, it will bind on the respectively complementary functionalized particle spot. This binding changes the local refractive index, which is detected spectroscopically as the resulting changes of the localized surface plasmon resonance (LSPR) peak wavelength. In order to increase the signal, a small gold nanoparticle label is introduced. The binding can be reversed using chemical means (10 mM HCl). It is demonstrated that multiplexed detection and identification of several fungal pathogen DNA sequences subsequently on one sensor array are possible by this approach.
Collapse
Affiliation(s)
- David Zopf
- Leibniz Institute of Photonic Technology (IPHT) Jena, Member of the Leibniz Research Alliance - Leibniz Health Technologies, Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Angelina Pittner
- Leibniz Institute of Photonic Technology (IPHT) Jena, Member of the Leibniz Research Alliance - Leibniz Health Technologies, Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - André Dathe
- Leibniz Institute of Photonic Technology (IPHT) Jena, Member of the Leibniz Research Alliance - Leibniz Health Technologies, Albert-Einstein-Straße 9, 07745 Jena, Germany
- Jena University Hospital, Friedrich-Schiller-University, Teichgraben 8, 07743 Jena, Germany
| | - Norman Grosse
- Leibniz Institute of Photonic Technology (IPHT) Jena, Member of the Leibniz Research Alliance - Leibniz Health Technologies, Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Andrea Csáki
- Leibniz Institute of Photonic Technology (IPHT) Jena, Member of the Leibniz Research Alliance - Leibniz Health Technologies, Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Kai Arstila
- University of Jyväskylä, Department of Physics and Nanoscience Center, P.O. Box 35, 40014 Jyväskylä, Finland
| | - J. Jussi Toppari
- University of Jyväskylä, Department of Physics and Nanoscience Center, P.O. Box 35, 40014 Jyväskylä, Finland
| | - Walter Schott
- SIOS Meßtechnik GmbH, Am Vogelherd 46, 98693 Ilmenau, Germany
| | - Denis Dontsov
- SIOS Meßtechnik GmbH, Am Vogelherd 46, 98693 Ilmenau, Germany
| | - Günter Uhlrich
- ABS Gesellschaft für Automatisierung, Bildverarbeitung und Software mbH, Stockholmer Straße 3, 07747 Jena, Germany
| | - Wolfgang Fritzsche
- Leibniz Institute of Photonic Technology (IPHT) Jena, Member of the Leibniz Research Alliance - Leibniz Health Technologies, Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Ondrej Stranik
- Leibniz Institute of Photonic Technology (IPHT) Jena, Member of the Leibniz Research Alliance - Leibniz Health Technologies, Albert-Einstein-Straße 9, 07745 Jena, Germany
| |
Collapse
|
20
|
Ye W, Celiksoy S, Jakab A, Khmelinskaia A, Heermann T, Raso A, Wegner SV, Rivas G, Schwille P, Ahijado-Guzmán R, Sönnichsen C. Plasmonic Nanosensors Reveal a Height Dependence of MinDE Protein Oscillations on Membrane Features. J Am Chem Soc 2018; 140:17901-17906. [PMID: 30481454 DOI: 10.1021/jacs.8b07759] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Single-particle plasmon spectroscopy has become a standard technique to detect and quantify the presence of unlabeled macromolecules. Here, we extend this method to determine their exact distance from the plasmon sensors with sub-nanometer resolution by systematically varying the sensing range into the surrounding by adjusting the size of the plasmonic nanoparticles. We improved current single-particle plasmon spectroscopy to record continuously for hours the scattering spectra of thousands of nanoparticles of different sizes simultaneously with 1.8 s time resolution. We apply this technique to study the interaction dynamics of bacterial Min proteins with supported lipid membranes of different composition. Our experiments reveal a surprisingly flexible operating mode of the Min proteins: In the presence of cardiolipin and membrane curvature induced by nanoparticles, the protein oscillation occurs on top of a stationary MinD patch. Our results reveal the need to consider membrane composition and local curvature as important parameters to quantitatively understand the Min protein system and could be extrapolated to other macromolecular systems. Our label-free method is generally easily implementable and well suited to measure distances of interacting biological macromolecules.
Collapse
Affiliation(s)
- Weixiang Ye
- Institute of Physical Chemistry , University of Mainz , Duesbergweg 10-14 , 55128 Mainz , Germany.,Graduate School of Excellence Materials Science in Mainz (MAINZ) , Staudinger Weg 9 , 55128 Mainz , Germany
| | - Sirin Celiksoy
- Institute of Physical Chemistry , University of Mainz , Duesbergweg 10-14 , 55128 Mainz , Germany
| | - Arpad Jakab
- Institute of Physical Chemistry , University of Mainz , Duesbergweg 10-14 , 55128 Mainz , Germany
| | - Alena Khmelinskaia
- Department of Cellular and Molecular Biophysics , Max Planck Institute of Biochemistry , Am Klopferspitz 18 , 82152 Martinsried , Germany
| | - Tamara Heermann
- Department of Cellular and Molecular Biophysics , Max Planck Institute of Biochemistry , Am Klopferspitz 18 , 82152 Martinsried , Germany
| | - Ana Raso
- Department of Cellular and Molecular Biophysics , Max Planck Institute of Biochemistry , Am Klopferspitz 18 , 82152 Martinsried , Germany.,Centro de Investigaciones Biológicas-CSIC , c/Ramiro de Maeztu 9 , 28040 Madrid , Spain
| | - Seraphine V Wegner
- Max-Planck Institute for Polymer Research , Ackermannweg 10 , 55128 Mainz , Germany
| | - Germán Rivas
- Centro de Investigaciones Biológicas-CSIC , c/Ramiro de Maeztu 9 , 28040 Madrid , Spain
| | - Petra Schwille
- Department of Cellular and Molecular Biophysics , Max Planck Institute of Biochemistry , Am Klopferspitz 18 , 82152 Martinsried , Germany
| | - Rubén Ahijado-Guzmán
- Institute of Physical Chemistry , University of Mainz , Duesbergweg 10-14 , 55128 Mainz , Germany
| | - Carsten Sönnichsen
- Institute of Physical Chemistry , University of Mainz , Duesbergweg 10-14 , 55128 Mainz , Germany
| |
Collapse
|
21
|
Aćimović SS, Šípová-Jungová H, Emilsson G, Shao L, Dahlin AB, Käll M, Antosiewicz TJ. Antibody-Antigen Interaction Dynamics Revealed by Analysis of Single-Molecule Equilibrium Fluctuations on Individual Plasmonic Nanoparticle Biosensors. ACS NANO 2018; 12:9958-9965. [PMID: 30165019 DOI: 10.1021/acsnano.8b04016] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Antibody-antigen interactions are complex events central to immune response, in vivo and in vitro diagnostics, and development of therapeutic substances. We developed an ultrastable single-molecule localized surface plasmon resonance (LSPR) sensing platform optimized for studying antibody-antigen interaction kinetics over very long time scales. The setup allowed us to perform equilibrium fluctuations analysis of the PEG/anti-PEG interaction. By time and frequency domain analysis, we demonstrate that reversible adsorption of monovalently bound anti-PEG antibodies is the dominant factor affecting the LSPR fluctuations. The results suggest that equilibrium fluctuation analysis can be an alternative to established methods for determination of interaction rates. In particular, the methodology is suited to analyze molecular systems whose properties change during the initial interaction phases, for example, due to mass transport limitations or, as demonstrated here, because the effective association rate constant varies with surface concentration of adsorbed molecules.
Collapse
Affiliation(s)
- Srdjan S Aćimović
- Department of Physics , Chalmers University of Technology , 412 96 Göteborg , Sweden
| | - Hana Šípová-Jungová
- Department of Physics , Chalmers University of Technology , 412 96 Göteborg , Sweden
| | - Gustav Emilsson
- Department of Chemistry and Chemical Engineering , Chalmers University of Technology , 412 96 Göteborg , Sweden
| | - Lei Shao
- Department of Physics , Chalmers University of Technology , 412 96 Göteborg , Sweden
| | - Andreas B Dahlin
- Department of Chemistry and Chemical Engineering , Chalmers University of Technology , 412 96 Göteborg , Sweden
| | - Mikael Käll
- Department of Physics , Chalmers University of Technology , 412 96 Göteborg , Sweden
| | - Tomasz J Antosiewicz
- Department of Physics , Chalmers University of Technology , 412 96 Göteborg , Sweden
- Faculty of Physics , University of Warsaw , Pasteura 5 , 02-093 Warsaw , Poland
- Center of New Technologies , University of Warsaw , Banacha 2c , 02-097 Warsaw , Poland
| |
Collapse
|
22
|
Abstract
INTRODUCTION Bioanalytical sensing based on the principle of localized surface plasmon resonance experiences is currently an extremely rapid development. Novel sensors with new kinds of plasmonic transducers and innovative concepts for the signal development as well as read-out principles were identified. This review will give an overview of the development of this field. Areas covered: The focus is primarily on types of transducers by preparation or dimension, factors for optimal sensing concepts and the critical view of the usability of these devices as innovative sensors for bioanalytical applications. Expert commentary: Plasmonic sensor devices offer a high potential for future biosensing given that limiting factors such as long-time stability of the transducers, the required high sensitivity and the cost-efficient production are addressed. For higher sensitivity, the design of the sensor in shape and material has to be combined with optimal enhancement strategies. Plasmonic nanoparticles from bottom-up synthesis with a post-synthetic processing show a high potential for cost-efficient sensor production. Regarding the measurement principle, LSPRi offers a large potential for multiplex sensors and can provide a high-throughput as well as highly paralleled sensing. The main trends are expected towards optimal LSPR concepts which represent cost-efficient and robust point-of-care solutions, and the use of multiplexed devices for clinical applications.
Collapse
Affiliation(s)
- Andrea Csáki
- a Department Nanobiophotonics , Leibniz Institute of Photonic Technology (IPHT) , Jena , Germany
| | - Ondrej Stranik
- a Department Nanobiophotonics , Leibniz Institute of Photonic Technology (IPHT) , Jena , Germany
| | - Wolfgang Fritzsche
- a Department Nanobiophotonics , Leibniz Institute of Photonic Technology (IPHT) , Jena , Germany
| |
Collapse
|
23
|
Plasmofluidics for Biosensing and Medical Diagnostics. NANOTECHNOLOGY CHARACTERIZATION TOOLS FOR BIOSENSING AND MEDICAL DIAGNOSIS 2018. [PMCID: PMC7122966 DOI: 10.1007/978-3-662-56333-5_5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Plasmofluidics, an extension of optofluidics into the nanoscale regime, merges plasmonics and micro-/nanofluidics for highly integrated and multifunctional lab on a chip. In this chapter, we focus on the applications of plasmofluidics in the versatile manipulation and sensing of biological cell, organelles, molecules, and nanoparticles, which underpin advanced biomedical diagnostics.
Collapse
|
24
|
Jung I, Yoo H, Jang HJ, Cho S, Lee K, Hong S, Park S. Fourier Transform Surface Plasmon Resonance (FTSPR) with Gyromagnetic Plasmonic Nanorods. Angew Chem Int Ed Engl 2018; 57:1841-1845. [PMID: 29266670 DOI: 10.1002/anie.201710619] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Revised: 12/13/2017] [Indexed: 12/28/2022]
Abstract
An unprecedented active and dynamic sensing platform based on a LSPR configuration that is modulated by using an external magnetic field is reported. Electrochemically synthesized Au/Fe/Au nanorods exhibited plasmonically active behavior through plasmonic coupling, and the middle ferromagnetic Fe block responded to a magnetic impetus, allowing the nanorods to be modulated. The shear force variation induced by the specific binding events between antigens and antibodies on the nanorod surface is used to enhance the sensitivity of detection of antigens in the plasmonics-based sensor application. As a proof-of-concept, influenza A virus (HA1) was used as a target protein. The limit of detection was enhanced by two orders of magnitude compared to that of traditional LSPR sensing.
Collapse
Affiliation(s)
- Insub Jung
- Department of Chemistry and Energy Science, Sungkyunkwan University, Suwon, 440-746, South Korea
| | - Haneul Yoo
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul, 151-747, South Korea
| | - Hee-Jeong Jang
- Department of Chemistry and Energy Science, Sungkyunkwan University, Suwon, 440-746, South Korea
| | - Sanghyun Cho
- Department of Chemistry and Energy Science, Sungkyunkwan University, Suwon, 440-746, South Korea
| | - Kyungeun Lee
- Department of Chemistry and Energy Science, Sungkyunkwan University, Suwon, 440-746, South Korea
| | - Seunghun Hong
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul, 151-747, South Korea
| | - Sungho Park
- Department of Chemistry and Energy Science, Sungkyunkwan University, Suwon, 440-746, South Korea
| |
Collapse
|
25
|
Jung I, Yoo H, Jang HJ, Cho S, Lee K, Hong S, Park S. Fourier Transform Surface Plasmon Resonance (FTSPR) with Gyromagnetic Plasmonic Nanorods. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201710619] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Insub Jung
- Department of Chemistry and Energy Science; Sungkyunkwan University; Suwon 440-746 South Korea
| | - Haneul Yoo
- Department of Physics and Astronomy, and Institute of Applied Physics; Seoul National University; Seoul 151-747 South Korea
| | - Hee-Jeong Jang
- Department of Chemistry and Energy Science; Sungkyunkwan University; Suwon 440-746 South Korea
| | - Sanghyun Cho
- Department of Chemistry and Energy Science; Sungkyunkwan University; Suwon 440-746 South Korea
| | - Kyungeun Lee
- Department of Chemistry and Energy Science; Sungkyunkwan University; Suwon 440-746 South Korea
| | - Seunghun Hong
- Department of Physics and Astronomy, and Institute of Applied Physics; Seoul National University; Seoul 151-747 South Korea
| | - Sungho Park
- Department of Chemistry and Energy Science; Sungkyunkwan University; Suwon 440-746 South Korea
| |
Collapse
|
26
|
Borzenkov M, Chirico G, Collini M, Pallavicini P. Gold Nanoparticles for Tissue Engineering. ENVIRONMENTAL NANOTECHNOLOGY 2018. [DOI: 10.1007/978-3-319-76090-2_10] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
27
|
Plech A, Ibrahimkutty S, Reich S, Newby G. Thermal dynamics of pulsed-laser excited gold nanorods in suspension. NANOSCALE 2017; 9:17284-17292. [PMID: 29090293 DOI: 10.1039/c7nr06125k] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Photothermal reactions of metallic nanostructures, such as gold nanorods show appealing structural relaxations, such as bubble formation or particle modification. We have employed a pump-probe method to record the structural relaxations of a suspension of gold nanorods upon femtosecond laser excitation by pulsed X-ray scattering both with wide-angle and small-angle sensitivity. Single-pulse reactions include transient bubble formation at 20 J m-2 and irreversible nanorod reshaping at 30 J m-2. Thus the window for reversible excitation is very narrow. Additionally we could map the time-domain and fluence behaviour in a wide range to characterize the relaxations comprehensively. The polarized laser pulse first selectively excites nanorods aligned with the laser electric field, but at higher fluence non-aligned rods are also transformed. At low fluence this transformation happens in the solid state, while at higher fluence the rods melt.
Collapse
Affiliation(s)
- Anton Plech
- Institute for Photon Science and Synchrotron Radiation, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany.
| | | | | | | |
Collapse
|
28
|
Kim D, Kwon HJ, Shin K, Kim J, Yoo RE, Choi SH, Soh M, Kang T, Han SI, Hyeon T. Multiplexible Wash-Free Immunoassay Using Colloidal Assemblies of Magnetic and Photoluminescent Nanoparticles. ACS NANO 2017; 11:8448-8455. [PMID: 28787118 DOI: 10.1021/acsnano.7b04088] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Colloidal assemblies of nanoparticles possess both the intrinsic and collective properties of their constituent nanoparticles, which are useful in applications where ordinary nanoparticles are not well suited. Here, we report an immunoassay technique based on colloidal nanoparticle assemblies made of iron oxide nanoparticles (magnetic substrate) and manganese-doped zinc sulfide (ZnS:Mn) nanoparticles (photoluminescent substrate), both of which are functionalized with antibodies to capture target proteins in a sandwich assay format. After magnetic isolation of the iron oxide nanoparticle assemblies and their bound ZnS:Mn nanoparticle assemblies (MZSNAs), photoluminescence of the remaining MZSNAs is measured for the protein quantification, eliminating the need for washing steps and signal amplification. Using human C-reactive protein as a model biomarker, we achieve a detection limit of as low as 0.7 pg/mL, which is more than 1 order of magnitude lower than that of enzyme-linked immunosorbent assay (9.1 pg/mL) performed using the same pair of antibodies, while using only one-tenth of the antibodies. We also confirm the potential for multiplex detection by using two different types of photoluminescent colloidal nanoparticle assemblies simultaneously.
Collapse
Affiliation(s)
- Dokyoon Kim
- Center for Nanoparticle Research, Institute for Basic Science (IBS) , Seoul 08826, Republic of Korea
| | - Hyek Jin Kwon
- Center for Nanoparticle Research, Institute for Basic Science (IBS) , Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering, Seoul National University , Seoul 08826, Republic of Korea
| | - Kwangsoo Shin
- Center for Nanoparticle Research, Institute for Basic Science (IBS) , Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering, Seoul National University , Seoul 08826, Republic of Korea
| | - Jaehyup Kim
- Department of Physiology, University of Texas Southwestern Medical Center , Dallas, Texas 75390, United States
| | - Roh-Eul Yoo
- Department of Radiology, Seoul National University College of Medicine , Seoul 03080, Republic of Korea
| | - Seung Hong Choi
- Center for Nanoparticle Research, Institute for Basic Science (IBS) , Seoul 08826, Republic of Korea
- Department of Radiology, Seoul National University College of Medicine , Seoul 03080, Republic of Korea
| | - Min Soh
- Center for Nanoparticle Research, Institute for Basic Science (IBS) , Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering, Seoul National University , Seoul 08826, Republic of Korea
| | - Taegyu Kang
- Center for Nanoparticle Research, Institute for Basic Science (IBS) , Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering, Seoul National University , Seoul 08826, Republic of Korea
| | - Sang Ihn Han
- Center for Nanoparticle Research, Institute for Basic Science (IBS) , Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering, Seoul National University , Seoul 08826, Republic of Korea
| | - Taeghwan Hyeon
- Center for Nanoparticle Research, Institute for Basic Science (IBS) , Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering, Seoul National University , Seoul 08826, Republic of Korea
| |
Collapse
|
29
|
Thiele M, Knauer A, Malsch D, Csáki A, Henkel T, Köhler JM, Fritzsche W. Combination of microfluidic high-throughput production and parameter screening for efficient shaping of gold nanocubes using Dean-flow mixing. LAB ON A CHIP 2017; 17:1487-1495. [PMID: 28327746 DOI: 10.1039/c7lc00109f] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Metal nanoparticles and their special optical properties, the so-called localized surface plasmon resonance (LSPR), facilitate many applications in various fields. Due to the strong dependency of the LSPR on particle geometry, their synthesis is a challenging and time-consuming procedure especially for non-spherical shapes. In contrast, micromixers offer new experimental approaches and therefore enable the simplification of several processes. By using a zigzag micromixer (Dean-Flow-Mixer, DFM) that induces Dean-flow secondary flow patterns, we theoretically and experimentally show the mixing efficiency. Thus, we highlight the advantages of using it in the multistep synthesis of Au nanoparticles. Based on a narrow size distribution of Au nanocubes and an increased yield in combination with higher reproducibility, we depict the need for and advantage of the DFM to control the incubation times during the growth process. We further show that, by using the DFM, easy and very fast Au nanocube edge length tuning (53 nm, 58 nm, 70 nm and 75 nm) is possible by simultaneously reducing the consumption of the materials by up to 95%. We finally demonstrate the versatile abilities by using the DFM for parameter screening on examples of different halides and accessible bromide in the growth solutions. Therefore, we highlight the optimal concentration for the different growth regimes and the influences on the Au nanoparticle morphology (spheres, cubes and rods) and their defined shaping.
Collapse
Affiliation(s)
- Matthias Thiele
- Dept. of Nano Biophotonics, Leibniz Institute of Photonic Technology (IPHT), Albert-Einstein-Straße 9, 07745 Jena, Germany. andrea.csaki(at)ipht-jena.de
| | | | | | | | | | | | | |
Collapse
|
30
|
Ahijado-Guzmán R, Menten J, Prasad J, Lambertz C, Rivas G, Sönnichsen C. Plasmonic Nanosensors for the Determination of Drug Effectiveness on Membrane Receptors. ACS APPLIED MATERIALS & INTERFACES 2017; 9:218-223. [PMID: 27976859 DOI: 10.1021/acsami.6b14013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We demonstrate the potential of the NanoSPR (nanoscale surface plasmon resonance sensors) method as a simple and cheap tool for the quantitative study of membrane protein-protein interactions. We use NanoSPR to determine the effectiveness of two potential drug candidates that inhibit the protein complex formation between FtsA and ZipA at initial stages of bacterial division. As the NanoSPR method relies on individual gold nanorods as sensing elements, there is no need for fluorescent labels or organic cosolvents, and it provides intrinsically high statistics. NanoSPR could become a powerful tool in drug development, drug delivery, and membrane studies.
Collapse
Affiliation(s)
- Rubén Ahijado-Guzmán
- Institute of Physical Chemistry, University of Mainz , Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Julia Menten
- Institute of Physical Chemistry, University of Mainz , Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Janak Prasad
- Institute of Physical Chemistry, University of Mainz , Duesbergweg 10-14, D-55128 Mainz, Germany
- Graduate School Materials Science in Mainz , Staudingerweg 9, D-55128 Mainz, Germany
| | - Christina Lambertz
- Institute of Physical Chemistry, University of Mainz , Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Germán Rivas
- Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Cientı́ficas , c/Ramiro de Maeztu 9, 28040 Madrid, Spain
| | - Carsten Sönnichsen
- Institute of Physical Chemistry, University of Mainz , Duesbergweg 10-14, D-55128 Mainz, Germany
| |
Collapse
|
31
|
Liyanage T, Sangha A, Sardar R. Achieving biosensing at attomolar concentrations of cardiac troponin T in human biofluids by developing a label-free nanoplasmonic analytical assay. Analyst 2017; 142:2442-2450. [DOI: 10.1039/c7an00430c] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A nanoplasmonic-based highly reproducible and ultrasensitive analytical sensor was fabricated to quantify cardiac troponin T at attomolar concentration with high selectivity.
Collapse
Affiliation(s)
- Thakshila Liyanage
- Department of Chemistry and Chemical Biology
- Indiana University-Purdue University Indianapolis
- Indianapolis
- USA
| | - Andeep Sangha
- Department of Chemistry and Chemical Biology
- Indiana University-Purdue University Indianapolis
- Indianapolis
- USA
| | - Rajesh Sardar
- Department of Chemistry and Chemical Biology
- Indiana University-Purdue University Indianapolis
- Indianapolis
- USA
- Integrated Nanosystems Development Institute
| |
Collapse
|
32
|
Tsargorodska A, Cartron ML, Vasilev C, Kodali G, Mass OA, Baumberg JJ, Dutton PL, Hunter CN, Törmä P, Leggett GJ. Strong Coupling of Localized Surface Plasmons to Excitons in Light-Harvesting Complexes. NANO LETTERS 2016; 16:6850-6856. [PMID: 27689237 PMCID: PMC5135229 DOI: 10.1021/acs.nanolett.6b02661] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Revised: 09/28/2016] [Indexed: 05/24/2023]
Abstract
Gold nanostructure arrays exhibit surface plasmon resonances that split after attaching light harvesting complexes 1 and 2 (LH1 and LH2) from purple bacteria. The splitting is attributed to strong coupling between the localized surface plasmon resonances and excitons in the light-harvesting complexes. Wild-type and mutant LH1 and LH2 from Rhodobacter sphaeroides containing different carotenoids yield different splitting energies, demonstrating that the coupling mechanism is sensitive to the electronic states in the light harvesting complexes. Plasmon-exciton coupling models reveal different coupling strengths depending on the molecular organization and the protein coverage, consistent with strong coupling. Strong coupling was also observed for self-assembling polypeptide maquettes that contain only chlorins. However, it is not observed for monolayers of bacteriochlorophyll, indicating that strong plasmon-exciton coupling is sensitive to the specific presentation of the pigment molecules.
Collapse
Affiliation(s)
- Anna Tsargorodska
- Department
of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, U.K.
| | - Michaël L. Cartron
- Department
of Molecular Biology and Biotechnology, University of Sheffield, Western Bank, Sheffield S10 2TN, U.K.
| | - Cvetelin Vasilev
- Department
of Molecular Biology and Biotechnology, University of Sheffield, Western Bank, Sheffield S10 2TN, U.K.
| | - Goutham Kodali
- The
Johnson Research Foundation and Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, Pennsylvania 10104, United States
| | - Olga A. Mass
- Department
of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Jeremy J. Baumberg
- Cavendish
Laboratory, Dept. of Physics, University
of Cambridge, J. J. Thomson
Ave, Cambridge, CB3 0HE, U.K.
| | - P. Leslie Dutton
- The
Johnson Research Foundation and Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, Pennsylvania 10104, United States
| | - C. Neil Hunter
- Department
of Molecular Biology and Biotechnology, University of Sheffield, Western Bank, Sheffield S10 2TN, U.K.
| | - Päivi Törmä
- COMP Centre
of Excellence, Department of Applied Physics, Aalto University, School of Science,
P.O. Box 15100, 00076 Aalto, Finland
| | - Graham J. Leggett
- Department
of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, U.K.
| |
Collapse
|
33
|
Zopf D, Jatschka J, Dathe A, Jahr N, Fritzsche W, Stranik O. Hyperspectral imaging of plasmon resonances in metallic nanoparticles. Biosens Bioelectron 2016; 81:287-293. [DOI: 10.1016/j.bios.2016.03.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 02/29/2016] [Accepted: 03/01/2016] [Indexed: 11/30/2022]
|
34
|
Lambertz C, Martos A, Henkel A, Neiser A, Kliesch TT, Janshoff A, Schwille P, Sönnichsen C. Single Particle Plasmon Sensors as Label-Free Technique To Monitor MinDE Protein Wave Propagation on Membranes. NANO LETTERS 2016; 16:3540-4. [PMID: 27172130 DOI: 10.1021/acs.nanolett.6b00507] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
We use individual gold nanorods as pointlike detectors for the intrinsic dynamics of an oscillating biological system. We chose the pattern forming MinDE protein system from Escherichia coli (E. coli), a prominent example for self-organized chemical oscillations of membrane-associated proteins that are involved in the bacterial cell division process. Similar to surface plasmon resonance (SPR), the gold nanorods report changes in their protein surface coverage without the need for fluorescence labeling, a technique we refer to as NanoSPR. Comparing the dynamics for fluorescence labeled and unlabeled proteins, we find a reduction of the oscillation period by about 20%. The absence of photobleaching allows us to investigate Min proteins attaching and detaching from lipid coated gold nanorods with an unprecedented bandwidth of 100 ms time resolution and 1 h observation time. The long observation reveals small changes of the oscillation period over time. Averaging many cycles yields the precise wave profile that exhibits the four phases suggested in previous reports. Unexpected from previous fluorescence-based studies, we found an immobile static protein layer not dissociating during the oscillation cycle. Hence, NanoSPR is an attractive label-free real-time technique for the local investigation of molecular dynamics with high observation bandwidth. It gives access to systems, which cannot be fluorescently labeled, and resolves local dynamics that would average out over the sensor area used in conventional SPR.
Collapse
Affiliation(s)
- Christina Lambertz
- Institute of Physical Chemistry, University of Mainz , Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Ariadna Martos
- Department of Cellular and Molecular Biophysics, Max Planck Institute of Biochemistry , Am Klopferspitz 18, D-82152 Martinsried, Germany
| | - Andreas Henkel
- Institute of Physical Chemistry, University of Mainz , Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Andreas Neiser
- Institute of Physical Chemistry, University of Mainz , Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Torben-Tobias Kliesch
- Institute of Physical Chemistry, University of Goettingen , Tammannstrasse 6, D-37077 Goettingen, Germany
| | - Andreas Janshoff
- Institute of Physical Chemistry, University of Goettingen , Tammannstrasse 6, D-37077 Goettingen, Germany
| | - Petra Schwille
- Department of Cellular and Molecular Biophysics, Max Planck Institute of Biochemistry , Am Klopferspitz 18, D-82152 Martinsried, Germany
| | - Carsten Sönnichsen
- Institute of Physical Chemistry, University of Mainz , Duesbergweg 10-14, D-55128 Mainz, Germany
| |
Collapse
|
35
|
Heidrich J, Wulf V, Hennig R, Saur M, Markl J, Sönnichsen C, Schneider D. Organization into Higher Ordered Ring Structures Counteracts Membrane Binding of IM30, a Protein Associated with Inner Membranes in Chloroplasts and Cyanobacteria. J Biol Chem 2016; 291:14954-62. [PMID: 27226585 DOI: 10.1074/jbc.m116.722686] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Indexed: 01/22/2023] Open
Abstract
The IM30 (inner membrane-associated protein of 30 kDa), also known as the Vipp1 (vesicle-inducing protein in plastids 1), has a crucial role in thylakoid membrane biogenesis and maintenance. Recent results suggest that the protein binds peripherally to membranes containing negatively charged lipids. However, although IM30 monomers interact and assemble into large oligomeric ring complexes with different numbers of monomers, it is still an open question whether ring formation is crucial for membrane interaction. Here we show that binding of IM30 rings to negatively charged phosphatidylglycerol membrane surfaces results in a higher ordered membrane state, both in the head group and in the inner core region of the lipid bilayer. Furthermore, by using gold nanorods covered with phosphatidylglycerol layers and single particle spectroscopy, we show that not only IM30 rings but also lower oligomeric IM30 structures interact with membranes, although with higher affinity. Thus, ring formation is not crucial for, and even counteracts, membrane interaction of IM30.
Collapse
Affiliation(s)
| | | | - Raoul Hennig
- From the Institutes of Pharmacy and Biochemistry
| | - Michael Saur
- Zoology, Johannes Gutenberg University, 55128 Mainz, Germany
| | - Jürgen Markl
- Zoology, Johannes Gutenberg University, 55128 Mainz, Germany
| | | | | |
Collapse
|
36
|
Lin JY, Zhong KD, Lee PT. Plasmonic behaviors of metallic AZO thin film and AZO nanodisk array. OPTICS EXPRESS 2016; 24:5125-5135. [PMID: 29092340 DOI: 10.1364/oe.24.005125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Aluminum-doped zinc oxide (AZO) is well known as transparent conducting material for electro-optical devices, but is rarely used as plasmonic material, particularly on the localized surface plasmon resonance (LSPR) behavior of AZO nanostructure and its plasmonic devices. In this study, we systematically investigate the plasmonic behaviors of AZO thin films and patterned AZO nanostructures with various structural dimensions under different annealing treatments. We find that AZO film can possess highly-tunable, metal-like, and low-loss plasmonic property and the LSPR characteristic of AZO nanostructure is observed in the near-infrared (NIR) region under proper annealing conditions. Finally, environmental index sensing is performed to demonstrate the capability of AZO nanostructure for optical sensing application. High index sensitivity of 873 nm per refractive index unit (RIU) variation is obtained in experiment.
Collapse
|
37
|
He J, Boegli M, Bruzas I, Lum W, Sagle L. Patterned Plasmonic Nanoparticle Arrays for Microfluidic and Multiplexed Biological Assays. Anal Chem 2015; 87:11407-14. [PMID: 26494412 DOI: 10.1021/acs.analchem.5b02870] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Jie He
- Department of Chemistry,
College of Arts and Sciences, University of Cincinnati, 301 West
Clifton Court, Cincinnati, Ohio 45221-0172, United States
| | - Michelle Boegli
- Department of Chemistry,
College of Arts and Sciences, University of Cincinnati, 301 West
Clifton Court, Cincinnati, Ohio 45221-0172, United States
| | - Ian Bruzas
- Department of Chemistry,
College of Arts and Sciences, University of Cincinnati, 301 West
Clifton Court, Cincinnati, Ohio 45221-0172, United States
| | - William Lum
- Department of Chemistry,
College of Arts and Sciences, University of Cincinnati, 301 West
Clifton Court, Cincinnati, Ohio 45221-0172, United States
| | - Laura Sagle
- Department of Chemistry,
College of Arts and Sciences, University of Cincinnati, 301 West
Clifton Court, Cincinnati, Ohio 45221-0172, United States
| |
Collapse
|
38
|
Localized Surface Plasmon Resonance Biosensing: Current Challenges and Approaches. SENSORS 2015; 15:15684-716. [PMID: 26147727 PMCID: PMC4541850 DOI: 10.3390/s150715684] [Citation(s) in RCA: 207] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Revised: 06/13/2015] [Accepted: 06/23/2015] [Indexed: 12/16/2022]
Abstract
Localized surface plasmon resonance (LSPR) has emerged as a leader among label-free biosensing techniques in that it offers sensitive, robust, and facile detection. Traditional LSPR-based biosensing utilizes the sensitivity of the plasmon frequency to changes in local index of refraction at the nanoparticle surface. Although surface plasmon resonance technologies are now widely used to measure biomolecular interactions, several challenges remain. In this article, we have categorized these challenges into four categories: improving sensitivity and limit of detection, selectivity in complex biological solutions, sensitive detection of membrane-associated species, and the adaptation of sensing elements for point-of-care diagnostic devices. The first section of this article will involve a conceptual discussion of surface plasmon resonance and the factors affecting changes in optical signal detected. The following sections will discuss applications of LSPR biosensing with an emphasis on recent advances and approaches to overcome the four limitations mentioned above. First, improvements in limit of detection through various amplification strategies will be highlighted. The second section will involve advances to improve selectivity in complex media through self-assembled monolayers, “plasmon ruler” devices involving plasmonic coupling, and shape complementarity on the nanoparticle surface. The following section will describe various LSPR platforms designed for the sensitive detection of membrane-associated species. Finally, recent advances towards multiplexed and microfluidic LSPR-based devices for inexpensive, rapid, point-of-care diagnostics will be discussed.
Collapse
|
39
|
Moxey M, Johnson A, El-Zubir O, Cartron M, Dinachali SS, Hunter CN, Saifullah MSM, Chong KSL, Leggett GJ. Fabrication of Self-Cleaning, Reusable Titania Templates for Nanometer and Micrometer Scale Protein Patterning. ACS NANO 2015; 9:6262-70. [PMID: 26042335 DOI: 10.1021/acsnano.5b01636] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The photocatalytic self-cleaning characteristics of titania facilitate the fabrication of reuseable templates for protein nanopatterning. Titania nanostructures were fabricated over square centimeter areas by interferometric lithography (IL) and nanoimprint lithography (NIL). With the use of a Lloyd's mirror two-beam interferometer, self-assembled monolayers of alkylphosphonates adsorbed on the native oxide of a Ti film were patterned by photocatalytic nanolithography. In regions exposed to a maximum in the interferogram, the monolayer was removed by photocatalytic oxidation. In regions exposed to an intensity minimum, the monolayer remained intact. After exposure, the sample was etched in piranha solution to yield Ti nanostructures with widths as small as 30 nm. NIL was performed by using a silicon stamp to imprint a spin-cast film of titanium dioxide resin; after calcination and reactive ion etching, TiO2 nanopillars were formed. For both fabrication techniques, subsequent adsorption of an oligo(ethylene glycol) functionalized trichlorosilane yielded an entirely passive, protein-resistant surface. Near-UV exposure caused removal of this protein-resistant film from the titania regions by photocatalytic degradation, leaving the passivating silane film intact on the silicon dioxide regions. Proteins labeled with fluorescent dyes were adsorbed to the titanium dioxide regions, yielding nanopatterns with bright fluorescence. Subsequent near-UV irradiation of the samples removed the protein from the titanium dioxide nanostructures by photocatalytic degradation facilitating the adsorption of a different protein. The process was repeated multiple times. These simple methods appear to yield durable, reuseable samples that may be of value to laboratories that require nanostructured biological interfaces but do not have access to the infrastructure required for nanofabrication.
Collapse
Affiliation(s)
- Mark Moxey
- †Department of Chemistry, University of Sheffield, Sheffield S3 7HF, United Kingdom
- ‡Institute of Materials Research and Engineering (IMRE), A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602, Republic of Singapore
| | - Alexander Johnson
- †Department of Chemistry, University of Sheffield, Sheffield S3 7HF, United Kingdom
| | - Osama El-Zubir
- †Department of Chemistry, University of Sheffield, Sheffield S3 7HF, United Kingdom
| | - Michael Cartron
- §Department of Molecular Biology and Biotechnology, University of Sheffield, Western Bank, Sheffield S10 2TN, United Kingdom
| | - Saman Safari Dinachali
- ‡Institute of Materials Research and Engineering (IMRE), A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602, Republic of Singapore
| | - C Neil Hunter
- §Department of Molecular Biology and Biotechnology, University of Sheffield, Western Bank, Sheffield S10 2TN, United Kingdom
| | - Mohammad S M Saifullah
- ‡Institute of Materials Research and Engineering (IMRE), A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602, Republic of Singapore
| | - Karen S L Chong
- ‡Institute of Materials Research and Engineering (IMRE), A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602, Republic of Singapore
| | - Graham J Leggett
- †Department of Chemistry, University of Sheffield, Sheffield S3 7HF, United Kingdom
| |
Collapse
|
40
|
Yang J, Giessen H, Lalanne P. Simple analytical expression for the peak-frequency shifts of plasmonic resonances for sensing. NANO LETTERS 2015; 15:3439-3444. [PMID: 25844813 DOI: 10.1021/acs.nanolett.5b00771] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We derive a closed-form expression that accurately predicts the peak frequency shift and broadening induced by tiny perturbations of plasmonic nanoresonators without critically relying on repeated electrodynamic simulations of the spectral response of nanoresonator for various locations, sizes, or shapes of the perturbing objects. In comparison with other approaches of the same kind, the force of the present approach is that the derivation is supported by a mathematical formalism based on a rigorous normalization of the resonance modes of nanoresonators consisting of lossy and dispersive materials. Accordingly, accurate predictions are obtained for a large range of nanoparticle shapes and sizes used in various plasmonic nanosensors even beyond the quasistatic limit. The expression gives quantitative insight and, combined with an open-source code, provides accurate and fast predictions that are ideally suited for preliminary designs or for interpretation of experimental data. It is also valid for photonic resonators with large mode volumes.
Collapse
Affiliation(s)
- Jianji Yang
- †Laboratoire Photonique Numérique et Nanosciences, Institut d'Optique d'Aquitaine, Université Bordeaux, CNRS, 33405 Talence, France
| | - Harald Giessen
- ‡4th Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57, 70550 Stuttgart, Germany
| | - Philippe Lalanne
- †Laboratoire Photonique Numérique et Nanosciences, Institut d'Optique d'Aquitaine, Université Bordeaux, CNRS, 33405 Talence, France
| |
Collapse
|
41
|
Wackenhut F, Failla AV, Meixner AJ. Single gold nanorods as optical probes for spectral imaging. Anal Bioanal Chem 2015; 407:4029-34. [PMID: 25855152 DOI: 10.1007/s00216-015-8642-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 03/13/2015] [Accepted: 03/16/2015] [Indexed: 10/23/2022]
Abstract
In this paper, we explain in detail the wavelength dependence of the elastic scattering pattern of individual, optically isolated gold nanorods by using confocal microscopy in combination with higher order laser modes, i.e., radially/azimuthally polarized laser modes. We demonstrate that the spectral dependence of the scattering pattern is mostly caused by the relative strength of the gold nanorods' plasmonic modes at different wavelengths. Since the gold nanorods' plasmonic modes are determined by the particles' geometrical parameter, e.g., size and aspect ratio, as well as the refractive index of the surrounding medium, we show that the spectral dependence of the scattering pattern is a simple, not invasive way to determine, e.g., the gold nanorod aspect ratio or physical variation of the local environment. Thus, a further development of spectral imaging of gold nanorods can lead to the employment of this technique in biomedical assays involving also living samples.
Collapse
Affiliation(s)
- Frank Wackenhut
- Institute of Physical and Theoretical Chemistry, Eberhard Karls University Tuebingen, Auf der Morgenstelle 18, 72076, Tübingen, Germany
| | | | | |
Collapse
|
42
|
Chen P, Chung MT, McHugh W, Nidetz R, Li Y, Fu J, Cornell TT, Shanley TP, Kurabayashi K. Multiplex serum cytokine immunoassay using nanoplasmonic biosensor microarrays. ACS NANO 2015; 9:4173-81. [PMID: 25790830 PMCID: PMC4447431 DOI: 10.1021/acsnano.5b00396] [Citation(s) in RCA: 193] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Precise monitoring of the rapidly changing immune status during the course of a disease requires multiplex analysis of cytokines from frequently sampled human blood. However, the current lack of rapid, multiplex, and low volume assays makes immune monitoring for clinical decision-making (e.g., critically ill patients) impractical. Without such assays, immune monitoring is even virtually impossible for infants and neonates with infectious diseases and/or immune mediated disorders as access to their blood in large quantities is prohibited. Localized surface plasmon resonance (LSPR)-based microfluidic optical biosensing is a promising approach to fill this technical gap as it could potentially permit real-time refractometric detection of biomolecular binding on a metallic nanoparticle surface and sensor miniaturization, both leading to rapid and sample-sparing analyte analysis. Despite this promise, practical implementation of such a microfluidic assay for cytokine biomarker detection in serum samples has not been established primarily due to the limited sensitivity of LSPR biosensing. Here, we developed a high-throughput, label-free, multiarrayed LSPR optical biosensor device with 480 nanoplasmonic sensing spots in microfluidic channel arrays and demonstrated parallel multiplex immunoassays of six cytokines in a complex serum matrix on a single device chip while overcoming technical limitations. The device was fabricated using easy-to-implement, one-step microfluidic patterning and antibody conjugation of gold nanorods (AuNRs). When scanning the scattering light intensity across the microarrays of AuNR ensembles with dark-field imaging optics, our LSPR biosensing technique allowed for high-sensitivity quantitative cytokine measurements at concentrations down to 5-20 pg/mL from a 1 μL serum sample. Using the nanoplasmonic biosensor microarray device, we demonstrated the ability to monitor the inflammatory responses of infants following cardiopulmonary bypass (CPB) surgery through tracking the time-course variations of their serum cytokines. The whole parallel on-chip assays, which involved the loading, incubation, and washing of samples and reagents, and 10-fold replicated multianalyte detection for each sample using the entire biosensor arrays, were completed within 40 min.
Collapse
Affiliation(s)
- Pengyu Chen
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Meng Ting Chung
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Walker McHugh
- Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Robert Nidetz
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Yuwei Li
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Jianping Fu
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Timothy T. Cornell
- Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Thomas P. Shanley
- Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Katsuo Kurabayashi
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, Michigan 48109, United States
- Address correspondence to
| |
Collapse
|
43
|
Peng Y, Xiong B, Peng L, Li H, He Y, Yeung ES. Recent advances in optical imaging with anisotropic plasmonic nanoparticles. Anal Chem 2014; 87:200-15. [PMID: 25375954 DOI: 10.1021/ac504061p] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Yinhe Peng
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan University , Changsha, Hunan 410082, P. R. China
| | | | | | | | | | | |
Collapse
|