1
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Hill BF, Mohr JM, Sandvoss IK, Gretz J, Galonska P, Schnitzler L, Erpenbeck L, Kruss S. Ratiometric near infrared fluorescence imaging of dopamine with 1D and 2D nanomaterials. NANOSCALE 2024; 16:18534-18544. [PMID: 39279544 DOI: 10.1039/d4nr02358g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/18/2024]
Abstract
Neurotransmitters are released by neuronal cells to exchange information. Resolving their spatiotemporal patterns is crucial to understand chemical neurotransmission. Here, we present a ratiometric sensor for the neurotransmitter dopamine that combines Egyptian blue (CaCuSi4O10) nanosheets (EB-NS) and single-walled carbon nanotubes (SWCNTs). They both fluoresce in the near infrared (NIR) region, which is beneficial due to their ultra-low background and phototoxicity. (GT)10-DNA-functionalized monochiral (6,5)-SWCNTs increase their fluorescence (1000 nm) in response to dopamine, while EB-NS serve as a stable reference (936 nm). A robust ratiometric imaging scheme is implemented by directing these signals on two different NIR sensitive cameras. Additionally, we demonstrate stability against mechanical perturbations and image dopamine release from differentiated dopaminergic Neuro 2a cells. Therefore, this technique enables robust ratiometric and non-invasive imaging of cellular responses.
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Affiliation(s)
- Bjoern F Hill
- Department of Chemistry, Ruhr Universität Bochum, 44801 Bochum, Germany.
| | - Jennifer M Mohr
- Department of Chemistry, Ruhr Universität Bochum, 44801 Bochum, Germany.
| | | | - Juliana Gretz
- Department of Chemistry, Ruhr Universität Bochum, 44801 Bochum, Germany.
| | - Phillip Galonska
- Department of Chemistry, Ruhr Universität Bochum, 44801 Bochum, Germany.
| | - Lena Schnitzler
- Department of Chemistry, Ruhr Universität Bochum, 44801 Bochum, Germany.
| | - Luise Erpenbeck
- Department of Dermatology, University Hospital Münster, 48149 Münster, Germany
| | - Sebastian Kruss
- Department of Chemistry, Ruhr Universität Bochum, 44801 Bochum, Germany.
- Fraunhofer Institute for Microelectronic Circuits and Systems, 47057 Duisburg, Germany
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2
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Basu S, Hendler-Neumark A, Bisker G. Dynamic Tracking of Biological Processes Using Near-Infrared Fluorescent Single-Walled Carbon Nanotubes. ACS APPLIED MATERIALS & INTERFACES 2024; 16. [PMID: 39377262 PMCID: PMC11492180 DOI: 10.1021/acsami.4c10955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2024] [Revised: 09/02/2024] [Accepted: 09/26/2024] [Indexed: 10/09/2024]
Abstract
Biological processes are characterized by dynamic and elaborate temporal patterns driven by the interplay of genes, proteins, and cellular components that are crucial for adaptation to changing environments. This complexity spans from molecular to organismal scales, necessitating their real-time monitoring and tracking to unravel the active processes that fuel living systems and enable early disease detection, personalized medicine, and drug development. Single-walled carbon nanotubes (SWCNTs), with their unique physicochemical and optical properties, have emerged as promising tools for real-time tracking of such processes. This perspective highlights the key properties of SWCNTs that make them ideal for such monitoring. Subsequently, it surveys studies utilizing SWCNTs to track dynamic biological phenomena across hierarchical levels─from molecules to cells, tissues, organs, and whole organisms─acknowledging their pivotal role in advancing this field. Finally, the review outlines challenges and future directions, aiming to expand the frontier of real-time biological monitoring using SWCNTs, contributing to deeper insights and novel applications in biomedicine.
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Affiliation(s)
- Srestha Basu
- Department
of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Adi Hendler-Neumark
- Department
of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Gili Bisker
- Department
of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 6997801, Israel
- Center
for Physics and Chemistry of Living Systems, Tel Aviv University, Tel Aviv 6997801, Israel
- Center
for Nanoscience and Nanotechnology, Tel
Aviv University, Tel Aviv 6997801, Israel
- Center
for Light-Matter Interaction, Tel Aviv University, Tel Aviv 6997801, Israel
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3
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Boudries R, Williams H, Paquereau-Gaboreau S, Bashir S, Hojjat Jodaylami M, Chisanga M, Trudeau LÉ, Masson JF. Surface-Enhanced Raman Scattering Nanosensing and Imaging in Neuroscience. ACS NANO 2024; 18:22620-22647. [PMID: 39088751 DOI: 10.1021/acsnano.4c05200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/03/2024]
Abstract
Monitoring neurochemicals and imaging the molecular content of brain tissues in vitro, ex vivo, and in vivo is essential for enhancing our understanding of neurochemistry and the causes of brain disorders. This review explores the potential applications of surface-enhanced Raman scattering (SERS) nanosensors in neurosciences, where their adoption could lead to significant progress in the field. These applications encompass detecting neurotransmitters or brain disorders biomarkers in biofluids with SERS nanosensors, and imaging normal and pathological brain tissues with SERS labeling. Specific studies highlighting in vitro, ex vivo, and in vivo analysis of brain disorders using fit-for-purpose SERS nanosensors will be detailed, with an emphasis on the ability of SERS to detect clinically pertinent levels of neurochemicals. Recent advancements in designing SERS-active nanomaterials, improving experimentation in biofluids, and increasing the usage of machine learning for interpreting SERS spectra will also be discussed. Furthermore, we will address the tagging of tissues presenting pathologies with nanoparticles for SERS imaging, a burgeoning domain of neuroscience that has been demonstrated to be effective in guiding tumor removal during brain surgery. The review also explores future research applications for SERS nanosensors in neuroscience, including monitoring neurochemistry in vivo with greater penetration using surface-enhanced spatially offset Raman scattering (SESORS), near-infrared lasers, and 2-photon techniques. The article concludes by discussing the potential of SERS for investigating the effectiveness of therapies for brain disorders and for integrating conventional neurochemistry techniques with SERS sensing.
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Affiliation(s)
- Ryma Boudries
- Department of Chemistry, Institut Courtois, Quebec Center for Advanced Materials (QCAM), and Regroupement Québécois sur les Matériaux de Pointe (RQMP), Université de Montréal, C.P. 6128 Succ. Centre-Ville, Montréal, Quebec H3C 3J7, Canada
| | - Hannah Williams
- Department of Chemistry, Institut Courtois, Quebec Center for Advanced Materials (QCAM), and Regroupement Québécois sur les Matériaux de Pointe (RQMP), Université de Montréal, C.P. 6128 Succ. Centre-Ville, Montréal, Quebec H3C 3J7, Canada
| | - Soraya Paquereau-Gaboreau
- Department of Chemistry, Institut Courtois, Quebec Center for Advanced Materials (QCAM), and Regroupement Québécois sur les Matériaux de Pointe (RQMP), Université de Montréal, C.P. 6128 Succ. Centre-Ville, Montréal, Quebec H3C 3J7, Canada
- Department of Pharmacology and Physiology, Department of Neurosciences, Faculty of Medicine, Université de Montréal, C.P. 6128 Succ. Centre-ville, Montréal, Quebec H3C 3J7, Canada
- Neural Signalling and Circuitry Research Group (SNC), Center for Interdisciplinary Research on the Brain and Learning (CIRCA), Université de Montréal, C.P. 6128 Succ. Centre-ville, Montréal, Quebec H3C 3J7, Canada
| | - Saba Bashir
- Department of Chemistry, Institut Courtois, Quebec Center for Advanced Materials (QCAM), and Regroupement Québécois sur les Matériaux de Pointe (RQMP), Université de Montréal, C.P. 6128 Succ. Centre-Ville, Montréal, Quebec H3C 3J7, Canada
| | - Maryam Hojjat Jodaylami
- Department of Chemistry, Institut Courtois, Quebec Center for Advanced Materials (QCAM), and Regroupement Québécois sur les Matériaux de Pointe (RQMP), Université de Montréal, C.P. 6128 Succ. Centre-Ville, Montréal, Quebec H3C 3J7, Canada
| | - Malama Chisanga
- Department of Chemistry, Institut Courtois, Quebec Center for Advanced Materials (QCAM), and Regroupement Québécois sur les Matériaux de Pointe (RQMP), Université de Montréal, C.P. 6128 Succ. Centre-Ville, Montréal, Quebec H3C 3J7, Canada
| | - Louis-Éric Trudeau
- Department of Pharmacology and Physiology, Department of Neurosciences, Faculty of Medicine, Université de Montréal, C.P. 6128 Succ. Centre-ville, Montréal, Quebec H3C 3J7, Canada
- Neural Signalling and Circuitry Research Group (SNC), Center for Interdisciplinary Research on the Brain and Learning (CIRCA), Université de Montréal, C.P. 6128 Succ. Centre-ville, Montréal, Quebec H3C 3J7, Canada
| | - Jean-Francois Masson
- Department of Chemistry, Institut Courtois, Quebec Center for Advanced Materials (QCAM), and Regroupement Québécois sur les Matériaux de Pointe (RQMP), Université de Montréal, C.P. 6128 Succ. Centre-Ville, Montréal, Quebec H3C 3J7, Canada
- Neural Signalling and Circuitry Research Group (SNC), Center for Interdisciplinary Research on the Brain and Learning (CIRCA), Université de Montréal, C.P. 6128 Succ. Centre-ville, Montréal, Quebec H3C 3J7, Canada
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4
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Nalige SS, Galonska P, Kelich P, Sistemich L, Herrmann C, Vukovic L, Kruss S, Havenith M. Fluorescence changes in carbon nanotube sensors correlate with THz absorption of hydration. Nat Commun 2024; 15:6770. [PMID: 39117612 PMCID: PMC11310214 DOI: 10.1038/s41467-024-50968-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Accepted: 07/26/2024] [Indexed: 08/10/2024] Open
Abstract
Single wall carbon nanotubes (SWCNTs) functionalized with (bio-)polymers such as DNA are soluble in water and sense analytes by analyte-specific changes of their intrinsic fluorescence. Such SWCNT-based (bio-)sensors translate the binding of a molecule (molecular recognition) into a measurable optical signal. This signal transduction is crucial for all types of molecular sensors to achieve high sensitivities. Although there is an increasing number of SWCNT-based sensors, there is yet no molecular understanding of the observed changes in the SWCNT's fluorescence. Here, we report THz experiments that map changes in the local hydration of the solvated SWCNT upon binding of analytes such as the neurotransmitter dopamine or the vitamin riboflavin. The THz amplitude signal serves as a measure of the coupling of charge fluctuations in the SWCNTs to the charge density fluctuations in the hydration layer. We find a linear (inverse) correlation between changes in THz amplitude and the intensity of the change in fluorescence induced by the analytes. Simulations show that the organic corona shapes the local water, which determines the exciton dynamics. Thus, THz signals are a quantitative predictor for signal transduction strength and can be used as a guiding chemical design principle for optimizing fluorescent biosensors.
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Affiliation(s)
- Sanjana S Nalige
- Department of Physical Chemistry II, Ruhr University Bochum, Bochum, Germany
| | - Phillip Galonska
- Department of Physical Chemistry II, Ruhr University Bochum, Bochum, Germany
| | - Payam Kelich
- Department of Chemistry and Biochemistry, University of Texas at El Paso, El Paso, TX, USA
| | - Linda Sistemich
- Department of Physical Chemistry II, Ruhr University Bochum, Bochum, Germany
| | - Christian Herrmann
- Department of Physical Chemistry I, Ruhr University Bochum, Bochum, Germany
| | - Lela Vukovic
- Department of Chemistry and Biochemistry, University of Texas at El Paso, El Paso, TX, USA
| | - Sebastian Kruss
- Department of Physical Chemistry II, Ruhr University Bochum, Bochum, Germany.
- Fraunhofer Institute for Microelectronic Circuits and Systems, Duisburg, Germany.
| | - Martina Havenith
- Department of Physical Chemistry II, Ruhr University Bochum, Bochum, Germany.
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5
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Settele S, Stammer F, Sebastian FL, Lindenthal S, Wald SR, Li H, Flavel BS, Zaumseil J. Easy Access to Bright Oxygen Defects in Biocompatible Single-Walled Carbon Nanotubes via a Fenton-like Reaction. ACS NANO 2024; 18:20667-20678. [PMID: 39051444 PMCID: PMC11308917 DOI: 10.1021/acsnano.4c06448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Revised: 07/11/2024] [Accepted: 07/17/2024] [Indexed: 07/27/2024]
Abstract
The covalent functionalization of single-walled carbon nanotubes (SWNTs) with luminescent oxygen defects increases their brightness and enables their application as optical biosensors or fluorescent probes for in vivo imaging in the second-biological window (NIR-II). However, obtaining luminescent defects with high brightness is challenging with the current functionalization methods due to a restricted window of reaction conditions or the necessity for controlled irradiation with ultraviolet light. Here, we report a method for introducing luminescent oxygen defects via a Fenton-like reaction that uses benign and inexpensive chemicals without light irradiation. (6,5) SWNTs in aqueous dispersion functionalized with this method show bright E11* emission (1105 nm) with 3.2 times higher peak intensities than the pristine E11 emission and a reproducible photoluminescence quantum yield of 3%. The functionalization can be performed within a wide range of reaction parameters and even with unsorted nanotube raw material at high concentrations (100 mg L-1), giving access to large amounts of brightly luminescent SWNTs. We further find that the introduced oxygen defects rearrange under light irradiation, which gives additional insights into the structure and dynamics of oxygen defects. Finally, the functionalization of ultrashort SWNTs with oxygen defects also enables high photoluminescence quantum yields. Their excellent emission properties are retained after surfactant exchange with biocompatible pegylated phospholipids or single-stranded DNA to make them suitable for in vivo NIR-II imaging and dopamine sensing.
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Affiliation(s)
- Simon Settele
- Institute
for Physical Chemistry, Universität
Heidelberg, D-69120 Heidelberg, Germany
| | - Florian Stammer
- Institute
for Physical Chemistry, Universität
Heidelberg, D-69120 Heidelberg, Germany
| | - Finn L. Sebastian
- Institute
for Physical Chemistry, Universität
Heidelberg, D-69120 Heidelberg, Germany
| | - Sebastian Lindenthal
- Institute
for Physical Chemistry, Universität
Heidelberg, D-69120 Heidelberg, Germany
| | - Simon R. Wald
- Institute
for Physical Chemistry, Universität
Heidelberg, D-69120 Heidelberg, Germany
| | - Han Li
- Department
of Mechanical and Materials Engineering, University of Turku, FI-20014 Turku, Finland
- Institute
of Nanotechnology, Karlsruhe Institute of
Technology, Kaiserstraße
12, D-76131 Karlsruhe, Germany
| | - Benjamin S. Flavel
- Institute
of Nanotechnology, Karlsruhe Institute of
Technology, Kaiserstraße
12, D-76131 Karlsruhe, Germany
| | - Jana Zaumseil
- Institute
for Physical Chemistry, Universität
Heidelberg, D-69120 Heidelberg, Germany
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6
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Basu S, Hendler-Neumark A, Bisker G. Rationally Designed Functionalization of Single-Walled Carbon Nanotubes for Real-Time Monitoring of Cholinesterase Activity and Inhibition in Plasma. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2309481. [PMID: 38358018 DOI: 10.1002/smll.202309481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 01/25/2024] [Indexed: 02/16/2024]
Abstract
Enzymes play a pivotal role in regulating numerous bodily functions. Thus, there is a growing need for developing sensors enabling real-time monitoring of enzymatic activity and inhibition. The activity and inhibition of cholinesterase (CHE) enzymes in blood plasma are fluorometrically monitored using near-infrared (NIR) fluorescent single-walled carbon nanotubes (SWCNTs) as probes, strategically functionalized with myristoylcholine (MC)- the substrate of CHE. A significant decrease in the fluorescence intensity of MC-suspended SWCNTs upon interaction with CHE is observed, attributed to the hydrolysis of the MC corona phase of the SWCNTs by CHE. Complementary measurements for quantifying choline, the product of MC hydrolysis, reveal a correlation between the fluorescence intensity decrease and the amount of released choline, rendering the SWCNTs optical sensors with real-time feedback in the NIR biologically transparent spectral range. Moreover, when synthetic and naturally abundant inhibitors inhibit the CHE enzymes present in blood plasma, no significant modulations of the MC-SWCNT fluorescence are observed, allowing effective detection of CHE inhibition. The rationally designed SWCNT sensors platform for monitoring of enzymatic activity and inhibition in clinically relevant samples is envisioned to not only advance the field of clinical diagnostics but also deepen further understanding of enzyme-related processes in complex biological fluids.
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Affiliation(s)
- Srestha Basu
- Department of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv, 6997801, Israel
| | - Adi Hendler-Neumark
- Department of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv, 6997801, Israel
| | - Gili Bisker
- Department of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv, 6997801, Israel
- Center for Physics and Chemistry of Living Systems, Tel Aviv University, Tel Aviv, 6997801, Israel
- Center for Nanoscience and Nanotechnology, Tel Aviv University, Tel Aviv, 6997801, Israel
- Center for Light-Matter Interaction, Tel Aviv University, Tel Aviv, 6997801, Israel
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7
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Basu S, Hendler-Neumark A, Bisker G. Monitoring Enzyme Activity Using Near-Infrared Fluorescent Single-Walled Carbon Nanotubes. ACS Sens 2024; 9:2237-2253. [PMID: 38669585 PMCID: PMC11129355 DOI: 10.1021/acssensors.4c00377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Revised: 04/03/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024]
Abstract
Enzymes serve as pivotal biological catalysts that accelerate essential chemical reactions, thereby influencing a variety of physiological processes. Consequently, the monitoring of enzyme activity and inhibition not only yields crucial insights into health and disease conditions but also forms the basis of research in drug discovery, toxicology, and the understanding of disease mechanisms. In this context, near-infrared (NIR) fluorescent single-walled carbon nanotubes (SWCNTs) have emerged as effective tools for tracking enzyme activity and inhibition through diverse strategies. This perspective explores the physicochemical attributes of SWCNTs that render them well-suited for such monitoring. Additionally, we delve into the various strategies developed so far for successfully monitoring enzyme activity and inhibition, emphasizing the distinctive features of each principle. Furthermore, we contrast the benefits of SWCNT-based NIR probes with conventional gold standards in monitoring enzyme activity. Lastly, we highlight the current challenges faced in this field and suggest potential solutions to propel it forward. This perspective aims to contribute to the ongoing progress in biodiagnostics and seeks to engage the wider community in developing and applying enzymatic assays using SWCNTs.
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Affiliation(s)
- Srestha Basu
- Department
of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Adi Hendler-Neumark
- Department
of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Gili Bisker
- Department
of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 6997801, Israel
- Center
for Physics and Chemistry of Living Systems, Tel Aviv University, Tel Aviv 6997801, Israel
- Center
for Nanoscience and Nanotechnology, Tel
Aviv University, Tel Aviv 6997801, Israel
- Center
for Light-Matter Interaction, Tel Aviv University, Tel Aviv 6997801, Israel
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8
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Ma C, Mohr JM, Lauer G, Metternich JT, Neutsch K, Ziebarth T, Reiner A, Kruss S. Ratiometric Imaging of Catecholamine Neurotransmitters with Nanosensors. NANO LETTERS 2024; 24:2400-2407. [PMID: 38345220 DOI: 10.1021/acs.nanolett.3c05082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
Neurotransmitters are important signaling molecules in the brain and are relevant in many diseases. Measuring them with high spatial and temporal resolutions in biological systems is challenging. Here, we develop a ratiometric fluorescent sensor/probe for catecholamine neurotransmitters on the basis of near-infrared (NIR) semiconducting single wall carbon nanotubes (SWCNTs). Phenylboronic acid (PBA)-based quantum defects are incorporated into them to interact selectively with catechol moieties. These PBA-SWCNTs are further modified with poly(ethylene glycol) phospholipids (PEG-PL) for biocompatibility. Catecholamines, including dopamine, do not affect the intrinsic E11 fluorescence (990 nm) of these (PEG-PL-PBA-SWCNT) sensors. In contrast, the defect-related E11* emission (1130 nm) decreases by up to 35%. Furthermore, this dual functionalization allows tuning selectivity by changing the charge of the PEG polymer. These sensors are not taken up by cells, which is beneficial for extracellular imaging, and they are functional in brain slices. In summary, we use dual functionalization of SWCNTs to create a ratiometric biosensor for dopamine.
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Affiliation(s)
- Chen Ma
- Department of Chemistry, Ruhr University Bochum, Bochum, North Rhine-Westphalia 44801, Germany
| | - Jennifer Maria Mohr
- Department of Chemistry, Ruhr University Bochum, Bochum, North Rhine-Westphalia 44801, Germany
| | - German Lauer
- Department of Biology and Biotechnology, Ruhr University Bochum, Bochum, North Rhine-Westphalia 44801, Germany
| | - Justus Tom Metternich
- Department of Chemistry, Ruhr University Bochum, Bochum, North Rhine-Westphalia 44801, Germany
- Fraunhofer Institute for Microelectronic Circuits and Systems, Duisburg, North Rhine-Westphalia 47057, Germany
| | - Krisztian Neutsch
- Department of Chemistry, Ruhr University Bochum, Bochum, North Rhine-Westphalia 44801, Germany
| | - Tim Ziebarth
- Department of Biology and Biotechnology, Ruhr University Bochum, Bochum, North Rhine-Westphalia 44801, Germany
| | - Andreas Reiner
- Department of Biology and Biotechnology, Ruhr University Bochum, Bochum, North Rhine-Westphalia 44801, Germany
| | - Sebastian Kruss
- Department of Chemistry, Ruhr University Bochum, Bochum, North Rhine-Westphalia 44801, Germany
- Fraunhofer Institute for Microelectronic Circuits and Systems, Duisburg, North Rhine-Westphalia 47057, Germany
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9
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Govindaraju R, Govindaraju S, Yun K, Kim J. Fluorescent-Based Neurotransmitter Sensors: Present and Future Perspectives. BIOSENSORS 2023; 13:1008. [PMID: 38131768 PMCID: PMC10742055 DOI: 10.3390/bios13121008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 11/24/2023] [Accepted: 11/27/2023] [Indexed: 12/23/2023]
Abstract
Neurotransmitters (NTs) are endogenous low-molecular-weight chemical compounds that transmit synaptic signals in the central nervous system. These NTs play a crucial role in facilitating signal communication, motor control, and processes related to memory and learning. Abnormalities in the levels of NTs lead to chronic mental health disorders and heart diseases. Therefore, detecting imbalances in the levels of NTs is important for diagnosing early stages of diseases associated with NTs. Sensing technologies detect NTs rapidly, specifically, and selectively, overcoming the limitations of conventional diagnostic methods. In this review, we focus on the fluorescence-based biosensors that use nanomaterials such as metal clusters, carbon dots, and quantum dots. Additionally, we review biomaterial-based, including aptamer- and enzyme-based, and genetically encoded biosensors. Furthermore, we elaborate on the fluorescence mechanisms, including fluorescence resonance energy transfer, photon-induced electron transfer, intramolecular charge transfer, and excited-state intramolecular proton transfer, in the context of their applications for the detection of NTs. We also discuss the significance of NTs in human physiological functions, address the current challenges in designing fluorescence-based biosensors for the detection of NTs, and explore their future development.
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Affiliation(s)
- Rajapriya Govindaraju
- Department of Chemical and Biological Engineering, Gachon University, 1342 Seongnam Daero, Seongnam-si 13120, Gyeonggi-do, Republic of Korea;
| | - Saravanan Govindaraju
- Department of Bio Nanotechnology, Gachon University, Seongnam-si 13120, Gyeonggi-do, Republic of Korea; (S.G.); (K.Y.)
| | - Kyusik Yun
- Department of Bio Nanotechnology, Gachon University, Seongnam-si 13120, Gyeonggi-do, Republic of Korea; (S.G.); (K.Y.)
| | - Jongsung Kim
- Department of Chemical and Biological Engineering, Gachon University, 1342 Seongnam Daero, Seongnam-si 13120, Gyeonggi-do, Republic of Korea;
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10
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Malik S, Singh J, Goyat R, Saharan Y, Chaudhry V, Umar A, Ibrahim AA, Akbar S, Ameen S, Baskoutas S. Nanomaterials-based biosensor and their applications: A review. Heliyon 2023; 9:e19929. [PMID: 37809900 PMCID: PMC10559358 DOI: 10.1016/j.heliyon.2023.e19929] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 09/05/2023] [Accepted: 09/06/2023] [Indexed: 10/10/2023] Open
Abstract
A sensor can be called ideal or perfect if it is enriched with certain characteristics viz., superior detections range, high sensitivity, selectivity, resolution, reproducibility, repeatability, and response time with good flow. Recently, biosensors made of nanoparticles (NPs) have gained very high popularity due to their excellent applications in nearly all the fields of science and technology. The use of NPs in the biosensor is usually done to fill the gap between the converter and the bioreceptor, which is at the nanoscale. Simultaneously the uses of NPs and electrochemical techniques have led to the emergence of biosensors with high sensitivity and decomposition power. This review summarizes the development of biosensors made of NPssuch as noble metal NPs and metal oxide NPs, nanowires (NWs), nanorods (NRs), carbon nanotubes (CNTs), quantum dots (QDs), and dendrimers and their recent advancement in biosensing technology with the expansion of nanotechnology.
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Affiliation(s)
- Sumit Malik
- Department of Chemistry, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, 133203, Haryana, India
| | - Joginder Singh
- Department of Chemistry, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, 133203, Haryana, India
| | - Rohit Goyat
- Department of Chemistry, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, 133203, Haryana, India
| | - Yajvinder Saharan
- Department of Chemistry, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, 133203, Haryana, India
| | - Vivek Chaudhry
- Department of Chemistry, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, 133203, Haryana, India
| | - Ahmad Umar
- Department of Chemistry, Faculty of Science and Arts, and Promising Centre for Sensors and Electronic Devices (PCSED)Najran University, Najran, 11001, Kingdom of Saudi Arabia
- Department of Materials Science and Engineering, The Ohio State University, Columbus, OH, 43210, USA
- Department of Materials Science and Engineering, The Ohio State University, Columbus, OH, 43210, USA
| | - Ahmed A. Ibrahim
- Department of Chemistry, Faculty of Science and Arts, and Promising Centre for Sensors and Electronic Devices (PCSED)Najran University, Najran, 11001, Kingdom of Saudi Arabia
| | - Sheikh Akbar
- Department of Materials Science and Engineering, The Ohio State University, Columbus, OH, 43210, USA
| | - Sadia Ameen
- Advanced Materials and Devices Laboratory, Department of Bio-Convergence Science, Advanced Science Campus, Jeonbuk National University, 56212, Jeonju, Republic of Korea
| | - Sotirios Baskoutas
- Department of Materials Science, University of Patras, 26500, Patras, Greece
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11
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Metternich JT, Wartmann JAC, Sistemich L, Nißler R, Herbertz S, Kruss S. Near-Infrared Fluorescent Biosensors Based on Covalent DNA Anchors. J Am Chem Soc 2023. [PMID: 37367958 DOI: 10.1021/jacs.3c03336] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
Semiconducting single-walled carbon nanotubes (SWCNTs) are versatile near-infrared (NIR) fluorophores. They are noncovalently modified to create sensors that change their fluorescence when interacting with biomolecules. However, noncovalent chemistry has several limitations and prevents a consistent way to molecular recognition and reliable signal transduction. Here, we introduce a widely applicable covalent approach to create molecular sensors without impairing the fluorescence in the NIR (>1000 nm). For this purpose, we attach single-stranded DNA (ssDNA) via guanine quantum defects as anchors to the SWCNT surface. A connected sequence without guanines acts as flexible capture probe allowing hybridization with complementary nucleic acids. Hybridization modulates the SWCNT fluorescence and the magnitude increases with the length of the capture sequence (20 > 10 ≫ 6 bases). The incorporation of additional recognition units via this sequence enables a generic route to NIR fluorescent biosensors with improved stability. To demonstrate the potential, we design sensors for bacterial siderophores and the SARS CoV-2 spike protein. In summary, we introduce covalent guanine quantum defect chemistry as rational design concept for biosensors.
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Affiliation(s)
- Justus T Metternich
- Department of Chemistry, Ruhr-University Bochum, 44801 Bochum, Germany
- Biomedical Nanosensors, Fraunhofer Institute for Microelectronic Circuits and Systems, 47057 Duisburg, Germany
| | | | - Linda Sistemich
- Department of Chemistry, Ruhr-University Bochum, 44801 Bochum, Germany
| | - Robert Nißler
- Nanoparticle Systems Engineering Laboratory, ETH Zürich, 8092 Zürich, Switzerland
- Laboratory for Particles-Biology Interactions, Empa, 9014 St. Gallen, Switzerland
| | - Svenja Herbertz
- Biomedical Nanosensors, Fraunhofer Institute for Microelectronic Circuits and Systems, 47057 Duisburg, Germany
| | - Sebastian Kruss
- Department of Chemistry, Ruhr-University Bochum, 44801 Bochum, Germany
- Biomedical Nanosensors, Fraunhofer Institute for Microelectronic Circuits and Systems, 47057 Duisburg, Germany
- Center for Nanointegration Duisburg-Essen (CENIDE), 47057 Duisburg, Germany
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12
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Ackermann J, Stegemann J, Smola T, Reger E, Jung S, Schmitz A, Herbertz S, Erpenbeck L, Seidl K, Kruss S. High Sensitivity Near-Infrared Imaging of Fluorescent Nanosensors. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2206856. [PMID: 36610045 DOI: 10.1002/smll.202206856] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 11/27/2022] [Indexed: 06/17/2023]
Abstract
Biochemical processes are fast and occur on small-length scales, which makes them difficult to measure. Optical nanosensors based on single-wall carbon nanotubes (SWCNTs) are able to capture such dynamics. They fluoresce in the near-infrared (NIR, 850-1700 nm) tissue transparency window and the emission wavelength depends on their chirality. However, NIR imaging requires specialized indium gallium arsenide (InGaAs) cameras with a typically low resolution because the quantum yield of normal Si-based cameras rapidly decreases in the NIR. Here, an efficient one-step phase separation approach to isolate monochiral (6,4)-SWCNTs (880 nm emission) from mixed SWCNT samples is developed. It enables imaging them in the NIR with high-resolution standard Si-based cameras (>50× more pixels). (6,4)-SWCNTs modified with (GT)10 -ssDNA become highly sensitive to the important neurotransmitter dopamine. These sensors are 1.7× brighter and 7.5× more sensitive and allow fast imaging (<50 ms). They enable high-resolution imaging of dopamine release from cells. Thus, the assembly of biosensors from (6,4)-SWCNTs combines the advantages of nanosensors working in the NIR with the sensitivity of (Si-based) cameras and enables broad usage of these nanomaterials.
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Affiliation(s)
- Julia Ackermann
- Fraunhofer Institute for Microelectronic Circuits and Systems, Finkenstrasse 61, 47057, Duisburg, Germany
- Department EBS, University Duisburg-Essen, Bismarkstrasse 81, 47057, Duisburg, Germany
| | - Jan Stegemann
- Fraunhofer Institute for Microelectronic Circuits and Systems, Finkenstrasse 61, 47057, Duisburg, Germany
- Department of Chemistry, Ruhr-University Bochum, Universitätsstrasse 150, 44801, Bochum, Germany
| | - Tim Smola
- Fraunhofer Institute for Microelectronic Circuits and Systems, Finkenstrasse 61, 47057, Duisburg, Germany
- Department EBS, University Duisburg-Essen, Bismarkstrasse 81, 47057, Duisburg, Germany
| | - Eline Reger
- Fraunhofer Institute for Microelectronic Circuits and Systems, Finkenstrasse 61, 47057, Duisburg, Germany
- Department EBS, University Duisburg-Essen, Bismarkstrasse 81, 47057, Duisburg, Germany
| | - Sebastian Jung
- ZEMOS Center for Solvation Science, Ruhr-University Bochum, Universitätsstrasse 150, 44801, Bochum, Germany
| | - Anne Schmitz
- Department of Dermatology, University Hospital Münster, Von-Esmarch-Strasse 58, 48149, Münster, Germany
| | - Svenja Herbertz
- Fraunhofer Institute for Microelectronic Circuits and Systems, Finkenstrasse 61, 47057, Duisburg, Germany
| | - Luise Erpenbeck
- Department of Dermatology, University Hospital Münster, Von-Esmarch-Strasse 58, 48149, Münster, Germany
| | - Karsten Seidl
- Fraunhofer Institute for Microelectronic Circuits and Systems, Finkenstrasse 61, 47057, Duisburg, Germany
- Department EBS, University Duisburg-Essen, Bismarkstrasse 81, 47057, Duisburg, Germany
- Center for Nanointegration Duisburg-Essen (CENIDE), Carl-Benz-Strasse 199, 47057, Duisburg, Germany
| | - Sebastian Kruss
- Fraunhofer Institute for Microelectronic Circuits and Systems, Finkenstrasse 61, 47057, Duisburg, Germany
- Department of Chemistry, Ruhr-University Bochum, Universitätsstrasse 150, 44801, Bochum, Germany
- Center for Nanointegration Duisburg-Essen (CENIDE), Carl-Benz-Strasse 199, 47057, Duisburg, Germany
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13
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Clément P, Ackermann J, Sahin-Solmaz N, Herbertz S, Boero G, Kruss S, Brugger J. Comparison of electrical and optical transduction modes of DNA-wrapped SWCNT nanosensors for the reversible detection of neurotransmitters. Biosens Bioelectron 2022; 216:114642. [DOI: 10.1016/j.bios.2022.114642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 08/05/2022] [Accepted: 08/15/2022] [Indexed: 11/02/2022]
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14
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Halicka K, Meloni F, Czok M, Spychalska K, Baluta S, Malecha K, Pilo MI, Cabaj J. New Trends in Fluorescent Nanomaterials-Based Bio/Chemical Sensors for Neurohormones Detection-A Review. ACS OMEGA 2022; 7:33749-33768. [PMID: 36188279 PMCID: PMC9520559 DOI: 10.1021/acsomega.2c04134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 09/05/2022] [Indexed: 06/16/2023]
Abstract
The study of neurotransmitters and stress hormones allows the determination of indicators of the current stress load in the body. These species also create a proper strategy of stress protection. Nowadays, stress is a general factor that affects the population, and it may cause a wide range of serious disorders. Abnormalities in the level of neurohormones, caused by chronic psychological stress, can occur in, for instance, corporate employees, health care workers, shift workers, policemen, or firefighters. Here we present a new nanomaterials-based sensors technology development for the determination of neurohormones. We focus on fluorescent sensors/biosensors that utilize nanomaterials, such as quantum dots or carbon nanomaterials. Nanomaterials, owing to their diversity in size and shape, have been attracting increasing attention in sensing or bioimaging. They possess unique properties, such as fluorescent, electronic, or photoluminescent features. In this Review, we summarize new trends in adopting nanomaterials for applications in fluorescent sensors for neurohormone monitoring.
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Affiliation(s)
- Kinga Halicka
- Faculty
of Chemistry and Faculty of Microsystem Electronics and Photonics, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Francesca Meloni
- Department
of Chemistry and Pharmacy, University of
Sassari, Via Vienna 2, 07100 Sassari, Italy
| | - Mateusz Czok
- Faculty
of Chemistry and Faculty of Microsystem Electronics and Photonics, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Kamila Spychalska
- Faculty
of Chemistry and Faculty of Microsystem Electronics and Photonics, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Sylwia Baluta
- Faculty
of Chemistry and Faculty of Microsystem Electronics and Photonics, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Karol Malecha
- Faculty
of Chemistry and Faculty of Microsystem Electronics and Photonics, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Maria I. Pilo
- Department
of Chemistry and Pharmacy, University of
Sassari, Via Vienna 2, 07100 Sassari, Italy
| | - Joanna Cabaj
- Faculty
of Chemistry and Faculty of Microsystem Electronics and Photonics, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
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15
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Nißler R, Ackermann J, Ma C, Kruss S. Prospects of Fluorescent Single-Chirality Carbon Nanotube-Based Biosensors. Anal Chem 2022; 94:9941-9951. [PMID: 35786856 DOI: 10.1021/acs.analchem.2c01321] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Semiconducting single-wall carbon nanotubes (SWCNTs) fluoresce in the near-infrared (NIR), and the emission wavelength depends on their structure (chirality). Interactions with other molecules affect their fluorescence, which has successfully been used for SWCNT-based molecular sensors. So far, most such sensors are assembled from crude mixtures of different SWCNT chiralities, which causes polydisperse sensor responses as well as spectral congestion and limits their performance. The advent of chirality-pure SWCNTs is about to overcome this limitation and paves the way for the next generation of biosensors. Here, we discuss the first examples of chirality-pure SWCNT-based fluorescent biosensors. We introduce routes to such sensors via aqueous two-phase extraction-assisted purification of SWCNTs and highlight the critical interplay between purification and surface modification procedures. Applications include the NIR detection and imaging of neurotransmitters, reactive oxygen species, lipids, bacterial motives, and plant metabolites. Most importantly, we outline a path toward how such monodisperse (chirality-pure) sensors will enable advanced multiplexed sensing with enhanced bioanalytical performance.
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Affiliation(s)
- Robert Nißler
- Nanoparticle Systems Engineering Lab, ETH Zurich, Sonneggstrasse 3, 8092 Zurich, Switzerland.,Laboratory for Particles-Biology Interactions, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland.,Department of Chemistry, Bochum University, Universitätsstrasse 150, 44801 Bochum, Germany
| | - Julia Ackermann
- Fraunhofer Institute of Microelectronic Circuits and Systems, Finkenstrasse 61, 47057 Duisburg, Germany
| | - Chen Ma
- Department of Chemistry, Bochum University, Universitätsstrasse 150, 44801 Bochum, Germany
| | - Sebastian Kruss
- Department of Chemistry, Bochum University, Universitätsstrasse 150, 44801 Bochum, Germany.,Fraunhofer Institute of Microelectronic Circuits and Systems, Finkenstrasse 61, 47057 Duisburg, Germany
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16
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A fluorescent nanosensor paint detects dopamine release at axonal varicosities with high spatiotemporal resolution. Proc Natl Acad Sci U S A 2022; 119:e2202842119. [PMID: 35613050 DOI: 10.1073/pnas.2202842119] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
SignificanceThe neurotransmitter dopamine controls normal behavior and dopaminergic dysfunction is prevalent in multiple brain diseases. To reach a detailed understanding of how dopamine release and signaling are regulated at the subcellular level, we developed a near infrared fluorescent dopamine nanosensor 'paint' (AndromeDA) to directly image dopamine release and its spatiotemporal characteristics. With AndromeDA, we can ascribe discrete DA release events to defined axonal varicosities, directly assess the heterogeneity of DA release events across such release sites, and determine the molecular components of the DA release machinery. AndromeDA thus provides a new method for gaining fundamental insights into the core mechanisms of dopamine release, which with greatly benefit our knowledge of dopamine biology and pathobiology.
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17
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Ackermann J, Metternich JT, Herbertz S, Kruss S. Biosensing with Fluorescent Carbon Nanotubes. Angew Chem Int Ed Engl 2022; 61:e202112372. [PMID: 34978752 PMCID: PMC9313876 DOI: 10.1002/anie.202112372] [Citation(s) in RCA: 76] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 12/28/2021] [Indexed: 12/23/2022]
Abstract
Biosensors are powerful tools for modern basic research and biomedical diagnostics. Their development requires substantial input from the chemical sciences. Sensors or probes with an optical readout, such as fluorescence, offer rapid, minimally invasive sensing of analytes with high spatial and temporal resolution. The near-infrared (NIR) region is beneficial because of the reduced background and scattering of biological samples (tissue transparency window) in this range. In this context, single-walled carbon nanotubes (SWCNTs) have emerged as versatile NIR fluorescent building blocks for biosensors. Here, we provide an overview of advances in SWCNT-based NIR fluorescent molecular sensors. We focus on chemical design strategies for diverse analytes and summarize insights into the photophysics and molecular recognition. Furthermore, different application areas are discussed-from chemical imaging of cellular systems and diagnostics to in vivo applications and perspectives for the future.
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Affiliation(s)
- Julia Ackermann
- Biomedical NanosensorsFraunhofer Institute for Microelectronic Circuits and SystemsFinkenstrasse 6147057DuisburgGermany
- Department EBSUniversity Duisburg-EssenBismarckstrasse 8147057DuisburgGermany
| | - Justus T. Metternich
- Physical ChemistryRuhr-University BochumUniversitätsstrasse 15044801BochumGermany
- Biomedical NanosensorsFraunhofer Institute for Microelectronic Circuits and SystemsFinkenstrasse 6147057DuisburgGermany
| | - Svenja Herbertz
- Biomedical NanosensorsFraunhofer Institute for Microelectronic Circuits and SystemsFinkenstrasse 6147057DuisburgGermany
| | - Sebastian Kruss
- Physical ChemistryRuhr-University BochumUniversitätsstrasse 15044801BochumGermany
- Biomedical NanosensorsFraunhofer Institute for Microelectronic Circuits and SystemsFinkenstrasse 6147057DuisburgGermany
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18
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Ackermann J, Metternich JT, Herbertz S, Kruss S. Biosensing with Fluorescent Carbon Nanotubes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202112372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Julia Ackermann
- Biomedical Nanosensors Fraunhofer Institute for Microelectronic Circuits and Systems Finkenstrasse 61 47057 Duisburg Germany
- Department EBS University Duisburg-Essen Bismarckstrasse 81 47057 Duisburg Germany
| | - Justus T. Metternich
- Physical Chemistry Ruhr-University Bochum Universitätsstrasse 150 44801 Bochum Germany
- Biomedical Nanosensors Fraunhofer Institute for Microelectronic Circuits and Systems Finkenstrasse 61 47057 Duisburg Germany
| | - Svenja Herbertz
- Biomedical Nanosensors Fraunhofer Institute for Microelectronic Circuits and Systems Finkenstrasse 61 47057 Duisburg Germany
| | - Sebastian Kruss
- Physical Chemistry Ruhr-University Bochum Universitätsstrasse 150 44801 Bochum Germany
- Biomedical Nanosensors Fraunhofer Institute for Microelectronic Circuits and Systems Finkenstrasse 61 47057 Duisburg Germany
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19
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Mann FA, Galonska P, Herrmann N, Kruss S. Quantum defects as versatile anchors for carbon nanotube functionalization. Nat Protoc 2022; 17:727-747. [PMID: 35110739 DOI: 10.1038/s41596-021-00663-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 11/03/2021] [Indexed: 11/09/2022]
Abstract
Single-wall carbon nanotubes (SWCNTs) are used in diverse applications that require chemical tailoring of the SWCNT surface, including optical sensing, imaging, targeted drug delivery and single-photon generation. SWCNTs have been noncovalently modified with (bio)polymers to preserve their intrinsic near-infrared fluorescence. However, demanding applications (e.g., requiring stability in biological fluids) would benefit from a stable covalent linkage between the SWCNT and the functional unit (e.g., antibody, fluorophore, drug). Here we present how to use diazonium salt chemistry to introduce sp3 quantum defects in the SWCNT carbon lattice to serve as handles for conjugation while preserving near-infrared fluorescence. In this protocol, we describe the straightforward, stable (covalent), highly versatile and scalable functionalization of SWCNTs with biomolecules such as peptides and proteins to yield near-infrared fluorescent SWCNT bioconjugates. We provide a step-by-step procedure covering SWCNT dispersion, quantum defect incorporation, bioconjugation, in situ peptide synthesis on SWCNTs, and characterization, which can be completed in 5-7 d.
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Affiliation(s)
- Florian A Mann
- Physical Chemistry II, Ruhr-Universität Bochum, Bochum, Germany.,Institute of Physical Chemistry, Göttingen University, Göttingen, Germany
| | | | - Niklas Herrmann
- Institute of Physical Chemistry, Göttingen University, Göttingen, Germany
| | - Sebastian Kruss
- Physical Chemistry II, Ruhr-Universität Bochum, Bochum, Germany. .,Institute of Physical Chemistry, Göttingen University, Göttingen, Germany. .,Fraunhofer Institute for Microelectronic Circuits and Systems, Duisburg, Germany.
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20
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Aptamer-modified biosensors to visualize neurotransmitter flux. J Neurosci Methods 2022; 365:109386. [PMID: 34653500 DOI: 10.1016/j.jneumeth.2021.109386] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 09/23/2021] [Accepted: 10/07/2021] [Indexed: 12/14/2022]
Abstract
Chemical biosensors with the capacity to continuously monitor various neurotransmitter dynamics can be powerful tools to understand complex signaling pathways in the brain. However, in vivo detection of neurochemicals is challenging for many reasons such as the rapid release and clearance of neurotransmitters in the extracellular space, or the low target analyte concentrations in a sea of interfering biomolecules. Biosensing platforms with adequate spatiotemporal resolution coupled to specific and selective receptors termed aptamers, demonstrate high potential to tackle such challenges. Herein, we review existing literature in this field. We first discuss nanoparticle-based systems, which have a simple in vitro implementation and easily interpretable results. We then examine methods employing near-infrared detection for deeper tissue imaging, hence easier translation to in vivo implementation. We conclude by reviewing live cell imaging of neurotransmitter release via aptamer-modified platforms. For each of these sensors, we discuss the associated challenges for translation to real-time in vivo neurochemical imaging. Realization of in vivo biosensors for neurotransmitters will drive future development of early prevention strategies, treatments, and therapeutics for psychiatric and neurodegenerative diseases.
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21
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Hofferber E, Meier J, Herrera N, Stapleton J, Calkins C, Iverson N. Detection of single walled carbon nanotube based sensors in a large mammal. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2021; 40:102489. [PMID: 34740870 DOI: 10.1016/j.nano.2021.102489] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 08/04/2021] [Accepted: 10/11/2021] [Indexed: 10/19/2022]
Abstract
High resolution, rapid, and precise detection of biological analytes related to disease and infection is currently the focus of many researchers. Better biosensors could lead to earlier detection, more avenues of intervention, and higher efficacy of therapeutics, which would lead to better outcomes for all patients. One class of biosensors, single walled carbon nanotubes, is unique due to their nanoscale resolution, single molecule sensitivity, and reversibility for long term applications. While these biosensors have been successful in rodent models, to date, no study has shown successful sensor detection in a large animal. In this study, we show the first successful signal detection of single walled carbon nanotube-based sensors in a large mammal model. Using a relatively simple and cost-effective system, we were able to detect signals in nearly 70% of the sheep used in the study, marking an important steppingstone towards the use of SWNT-based sensors for clinical diagnostics.
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Affiliation(s)
- Eric Hofferber
- Biological Systems Engineering Department, University of Nebraska-Lincoln, Lincoln, NE, USA.
| | - Jakob Meier
- Biological Systems Engineering Department, University of Nebraska-Lincoln, Lincoln, NE, USA.
| | - Nicolas Herrera
- Animal Science Department, University of Nebraska-Lincoln, Lincoln, NE, USA.
| | - Joseph Stapleton
- Biological Systems Engineering Department, University of Nebraska-Lincoln, Lincoln, NE, USA.
| | - Chris Calkins
- Animal Science Department, University of Nebraska-Lincoln, Lincoln, NE, USA.
| | - Nicole Iverson
- Biological Systems Engineering Department, University of Nebraska-Lincoln, Lincoln, NE, USA.
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22
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Del Bonis-O'Donnell JT, Mun J, Delevich K, Landry MP. Synthetic nanosensors for imaging neuromodulators. J Neurosci Methods 2021; 363:109326. [PMID: 34418445 DOI: 10.1016/j.jneumeth.2021.109326] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 08/12/2021] [Accepted: 08/16/2021] [Indexed: 12/25/2022]
Abstract
Neuromodulation plays a critical role in regulating brain function and its dysregulation is implicated in the pathogenesis of numerous neurological and psychiatric disorders. However, only in the last few years have optical tools become available to probe the spatial and temporal profiles of neuromodulator signaling, including dopamine, with the requisite resolution to uncover mechanisms of neuromodulation. In this review, we summarize the current state of synthetic nanomaterial-based optical nanosensors for monitoring neurotransmission with high spatial and temporal resolution. Specifically, we highlight how synthetic nanosensors can elucidate the spatial distribution of neuromodulator release sites and report the temporal dynamics and spatial diffusion of neuromodulator release. Next, we outline advantages and limitations of currently available nanosensors and their recent application to imaging endogenous dopamine release in brain tissue. Finally, we discuss strategies to improve nanosensors for in vivo use, with implications for translational applications.
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Affiliation(s)
| | - Jaewan Mun
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA, USA
| | - Kristen Delevich
- Department of Integrative Physiology and Neuroscience, College of Veterinary Medicine, Washington State University, Pullman, WA, USA.
| | - Markita P Landry
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA, USA; Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, USA; California Institute for Quantitative Biosciences (QB3), Berkeley, CA, USA; Chan-Zuckerberg Biohub, San Francisco, CA, USA.
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23
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Furlan de Oliveira R, Montes-García V, Ciesielski A, Samorì P. Harnessing selectivity in chemical sensing via supramolecular interactions: from functionalization of nanomaterials to device applications. MATERIALS HORIZONS 2021; 8:2685-2708. [PMID: 34605845 DOI: 10.1039/d1mh01117k] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Chemical sensing is a strategic field of science and technology ultimately aiming at improving the quality of our lives and the sustainability of our Planet. Sensors bear a direct societal impact on well-being, which includes the quality and composition of the air we breathe, the water we drink, and the food we eat. Pristine low-dimensional materials are widely exploited as highly sensitive elements in chemical sensors, although they suffer from lack of intrinsic selectivity towards specific analytes. Here, we showcase the most recent strategies on the use of (supra)molecular interactions to harness the selectivity of suitably functionalized 0D, 1D, and 2D low-dimensional materials for chemical sensing. We discuss how the design and selection of receptors via machine learning and artificial intelligence hold a disruptive potential in chemical sensing, where selectivity is achieved by the design and high-throughput screening of large libraries of molecules exhibiting a set of affinity parameters that dictates the analyte specificity. We also discuss the importance of achieving selectivity along with other relevant characteristics in chemical sensing, such as high sensitivity, response speed, and reversibility, as milestones for true practical applications. Finally, for each distinct class of low-dimensional material, we present the most suitable functionalization strategies for their incorporation into efficient transducers for chemical sensing.
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Affiliation(s)
| | - Verónica Montes-García
- Université de Strasbourg and CNRS, ISIS, 8 allée Gaspard Monge, 67000 Strasbourg, France.
| | - Artur Ciesielski
- Université de Strasbourg and CNRS, ISIS, 8 allée Gaspard Monge, 67000 Strasbourg, France.
| | - Paolo Samorì
- Université de Strasbourg and CNRS, ISIS, 8 allée Gaspard Monge, 67000 Strasbourg, France.
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24
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Card M, Gravely M, M Madani SZ, Roxbury D. A Spin-Coated Hydrogel Platform Enables Accurate Investigation of Immobilized Individual Single-Walled Carbon Nanotubes. ACS APPLIED MATERIALS & INTERFACES 2021; 13:31986-31995. [PMID: 34197074 DOI: 10.1021/acsami.1c06562] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Single-walled carbon nanotubes (SWCNTs) have been used in a variety of sensing and imaging applications over the past few years due to their unique optical properties. In the solution phase, SWCNTs are employed as near-infrared (NIR) fluorescence-based sensors of target analytes via modulations in emission intensity and/or wavelength. In an effort to lower the limit of detection, research has been conducted into isolating SWCNTs adhered to surfaces for potential single molecule analyte detection. However, it is known that SWCNT fluorescence is adversely affected by the inherently rough surfaces that are conventionally used for their observation (e.g., glass coverslip), potentially interfering with fluorescence-based analyte detection. Here, using a spin-coating method with thin films of alginate and SWCNTs, we demonstrate that a novel hydrogel platform can be created to investigate immobilized individual SWCNTs without significantly perturbing their optical properties as compared to solution-phase values. In contrast to the glass coverslip, which red-shifted DNA-functionalized (6,5)-SWCNTs by an average of 3.4 nm, the hydrogel platform reported emission wavelengths that statistically matched the solution-phase values. Additionally, the heterogeneity in the wavelength measurements, as determined from the width of created histograms, was reduced nearly by a factor of 3 for the SWCNTs in the hydrogel platform when compared to glass coverslips. Using long SWCNTs, i.e., those with an average length above the diffraction limit of our microscope, we show that a glass coverslip can induce optical heterogeneity along the length of a single SWCNT regardless of its surface functionalization. This is again significantly mitigated when examining the long SWCNTs in the hydrogel platform. Finally, we show that upon the addition of a model analyte (calcium chloride), the optical response can be spatially resolved along the length of a single SWCNT, enabling localized analyte detection on the surface of a single nanoscale sensor.
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Affiliation(s)
- Matthew Card
- Department of Chemical Engineering, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Mitchell Gravely
- Department of Chemical Engineering, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - S Zahra M Madani
- Department of Chemical Engineering, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Daniel Roxbury
- Department of Chemical Engineering, University of Rhode Island, Kingston, Rhode Island 02881, United States
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25
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Nißler R, Kurth L, Li H, Spreinat A, Kuhlemann I, Flavel BS, Kruss S. Sensing with Chirality-Pure Near-Infrared Fluorescent Carbon Nanotubes. Anal Chem 2021; 93:6446-6455. [PMID: 33830740 DOI: 10.1021/acs.analchem.1c00168] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Semiconducting single-wall carbon nanotubes (SWCNTs) fluoresce in the near-infrared (NIR) region, and the emission wavelength depends on their chirality (n,m). Interactions with the environment affect the fluorescence and can be tailored by functionalizing SWCNTs with biopolymers such as DNA, which is the basis for fluorescent biosensors. So far, such biosensors have been mainly assembled from mixtures of SWCNT chiralities with large spectral overlap, which affects sensitivity as well as selectivity and prevents multiplexed sensing. The main challenge to gain chirality-pure sensors has been to combine approaches to isolate specific SWCNTs and generic (bio)functionalization approaches. Here, we created chirality-pure SWCNT-based NIR biosensors for important analytes such as neurotransmitters and investigated the effect of SWCNT chirality/handedness as well as long-term stability and sensitivity. For this purpose, we used aqueous two-phase extraction (ATPE) to gain chirality-pure (6,5)-, (7,5)-, (9,4)-, and (7,6)-SWCNTs (emission at ∼990, 1040, 1115, and 1130 nm, respectively). An exchange of the surfactant sodium deoxycholate (DOC) to specific single-stranded (ss)DNA sequences yielded monochiral sensors for small analytes (dopamine, riboflavin, ascorbic acid, pH). DOC residues impaired sensitivity, and therefore substantial removal was necessary. The assembled monochiral (6,5)-SWCNTs were up to 10 times brighter than their nonpurified counterparts, and the ssDNA sequence determined the absolute fluorescence intensity as well as colloidal (long-term) stability and selectivity for the analytes. (GT)40-(6,5)-SWCNTs displayed the maximum fluorescence response to the neurotransmitter dopamine (+140%, Kd = 1.9 × 10-7 M) and a long-term stability of >14 days. The specific ssDNA sequences imparted selectivity to the analytes mostly independent of SWCNT chirality and handedness of (±) (6,5)-SWCNTs, which allowed a predictable design. Finally, multiple monochiral/single-color SWCNTs were combined to achieve ratiometric/multiplexed sensing of the important analytes dopamine, riboflavin, H2O2, and pH. In summary, we demonstrated the assembly, characteristics, and potential of monochiral (single-color) SWCNTs for NIR fluorescence sensing applications.
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Affiliation(s)
- Robert Nißler
- Institute of Physical Chemistry, Göttingen University, 37077 Göttingen, Germany.,Physical Chemistry II, Bochum University, 44801 Bochum, Germany
| | - Larissa Kurth
- Institute of Physical Chemistry, Göttingen University, 37077 Göttingen, Germany
| | - Han Li
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), 76344 Eggenstein-Leopoldshafen, Germany
| | - Alexander Spreinat
- Institute of Physical Chemistry, Göttingen University, 37077 Göttingen, Germany
| | - Ilyas Kuhlemann
- Institute of Physical Chemistry, Göttingen University, 37077 Göttingen, Germany
| | - Benjamin S Flavel
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), 76344 Eggenstein-Leopoldshafen, Germany
| | - Sebastian Kruss
- Institute of Physical Chemistry, Göttingen University, 37077 Göttingen, Germany.,Physical Chemistry II, Bochum University, 44801 Bochum, Germany.,Fraunhofer Institute for Microelectronic Circuits and Systems, 47057 Duisburg, Germany
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Hofferber E, Meier J, Herrera N, Stapleton J, Ney K, Francis B, Calkins C, Iverson N. Novel methods to extract and quantify sensors based on single wall carbon nanotube fluorescence from animal tissue and hydrogel-based platforms. Methods Appl Fluoresc 2021; 9:025005. [PMID: 33631740 DOI: 10.1088/2050-6120/abea07] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Sensors that can quickly and accurately diagnose and monitor human health are currently at the forefront of medical research. Single walled carbon nanotube (SWNT) based optical biosensors are a growing area of research due to the high spatiotemporal resolution of their near infrared fluorescence leading to high tissue transparency and unparalleled sensitivity to analytes of interest. Unfortunately, due to the functionalization requirements of SWNT-based sensors, there are concerns surrounding accumulation and persistence when applied in vivo. In this study, we developed protocols to extract and quantify SWNT from complex solutions and show an 89% sensor retention by hydrogel platforms when implanted in vivo. Animal tissues of interest were also extracted and probed for SWNT content showing no accumulation (0.03 mg l-1 SWNT detection limit). The methods developed in this paper demonstrated one avenue for applying SWNT sensors in vivo without concern for accumulation.
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Affiliation(s)
- Eric Hofferber
- Biological Systems Engineering Department, University of Nebraska-Lincoln, Lincoln, NE, United States of America
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27
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Nißler R, Bader O, Dohmen M, Walter SG, Noll C, Selvaggio G, Groß U, Kruss S. Remote near infrared identification of pathogens with multiplexed nanosensors. Nat Commun 2020; 11:5995. [PMID: 33239609 PMCID: PMC7689463 DOI: 10.1038/s41467-020-19718-5] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 10/16/2020] [Indexed: 02/07/2023] Open
Abstract
Infectious diseases are worldwide a major cause of morbidity and mortality. Fast and specific detection of pathogens such as bacteria is needed to combat these diseases. Optimal methods would be non-invasive and without extensive sample-taking/processing. Here, we developed a set of near infrared (NIR) fluorescent nanosensors and used them for remote fingerprinting of clinically important bacteria. The nanosensors are based on single-walled carbon nanotubes (SWCNTs) that fluoresce in the NIR optical tissue transparency window, which offers ultra-low background and high tissue penetration. They are chemically tailored to detect released metabolites as well as specific virulence factors (lipopolysaccharides, siderophores, DNases, proteases) and integrated into functional hydrogel arrays with 9 different sensors. These hydrogels are exposed to clinical isolates of 6 important bacteria (Staphylococcus aureus, Escherichia coli,…) and remote (≥25 cm) NIR imaging allows to identify and distinguish bacteria. Sensors are also spectrally encoded (900 nm, 1000 nm, 1250 nm) to differentiate the two major pathogens P. aeruginosa as well as S. aureus and penetrate tissue (>5 mm). This type of multiplexing with NIR fluorescent nanosensors enables remote detection and differentiation of important pathogens and the potential for smart surfaces.
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Affiliation(s)
- Robert Nißler
- Institute of Physical Chemistry, Göttingen University, Göttingen, Germany
- Physical Chemistry II, Bochum University, Bochum, Germany
| | - Oliver Bader
- Institute of Medical Microbiology, University Medical Center Göttingen, Göttingen, Germany
| | - Maria Dohmen
- Institute of Physical Chemistry, Göttingen University, Göttingen, Germany
| | - Sebastian G Walter
- Department for Cardiothoracic Surgery and Intensive Care, University Hospital Cologne, Cologne, Germany
| | - Christine Noll
- Institute of Medical Microbiology, University Medical Center Göttingen, Göttingen, Germany
| | - Gabriele Selvaggio
- Institute of Physical Chemistry, Göttingen University, Göttingen, Germany
- Physical Chemistry II, Bochum University, Bochum, Germany
| | - Uwe Groß
- Institute of Medical Microbiology, University Medical Center Göttingen, Göttingen, Germany
| | - Sebastian Kruss
- Institute of Physical Chemistry, Göttingen University, Göttingen, Germany.
- Physical Chemistry II, Bochum University, Bochum, Germany.
- Fraunhofer Institute for Microelectronic Circuits and Systems, Duisburg, Germany.
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28
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Mann FA, Herrmann N, Opazo F, Kruss S. Quantum Defects as a Toolbox for the Covalent Functionalization of Carbon Nanotubes with Peptides and Proteins. Angew Chem Int Ed Engl 2020; 59:17732-17738. [PMID: 32511874 PMCID: PMC7540668 DOI: 10.1002/anie.202003825] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 04/24/2020] [Indexed: 12/16/2022]
Abstract
Single-walled carbon nanotubes (SWCNTs) are a 1D nanomaterial that shows fluorescence in the near-infrared (NIR, >800 nm). In the past, covalent chemistry was less explored to functionalize SWCNTs as it impairs NIR emission. However, certain sp3 defects (quantum defects) in the carbon lattice have emerged that preserve NIR fluorescence and even introduce a new, red-shifted emission peak. Here, we report on quantum defects, introduced using light-driven diazonium chemistry, that serve as anchor points for peptides and proteins. We show that maleimide anchors allow conjugation of cysteine-containing proteins such as a GFP-binding nanobody. In addition, an Fmoc-protected phenylalanine defect serves as a starting point for conjugation of visible fluorophores to create multicolor SWCNTs and in situ peptide synthesis directly on the nanotube. Therefore, these quantum defects are a versatile platform to tailor both the nanotube's photophysical properties as well as their surface chemistry.
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Affiliation(s)
- Florian A. Mann
- Institute of Physical ChemistryGeorg-August UniversitätTammannstraße 637077GöttingenGermany
| | - Niklas Herrmann
- Institute of Physical ChemistryGeorg-August UniversitätTammannstraße 637077GöttingenGermany
| | - Felipe Opazo
- Center for Biostructural Imaging of NeurodegenerationVon-Siebold-Straße 3a37075GöttingenGermany
| | - Sebastian Kruss
- Institute of Physical ChemistryGeorg-August UniversitätTammannstraße 637077GöttingenGermany
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29
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Dalangin R, Kim A, Campbell RE. The Role of Amino Acids in Neurotransmission and Fluorescent Tools for Their Detection. Int J Mol Sci 2020; 21:E6197. [PMID: 32867295 PMCID: PMC7503967 DOI: 10.3390/ijms21176197] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 08/17/2020] [Accepted: 08/24/2020] [Indexed: 12/20/2022] Open
Abstract
Neurotransmission between neurons, which can occur over the span of a few milliseconds, relies on the controlled release of small molecule neurotransmitters, many of which are amino acids. Fluorescence imaging provides the necessary speed to follow these events and has emerged as a powerful technique for investigating neurotransmission. In this review, we highlight some of the roles of the 20 canonical amino acids, GABA and β-alanine in neurotransmission. We also discuss available fluorescence-based probes for amino acids that have been shown to be compatible for live cell imaging, namely those based on synthetic dyes, nanostructures (quantum dots and nanotubes), and genetically encoded components. We aim to provide tool developers with information that may guide future engineering efforts and tool users with information regarding existing indicators to facilitate studies of amino acid dynamics.
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Affiliation(s)
- Rochelin Dalangin
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada; (R.D.); (A.K.)
| | - Anna Kim
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada; (R.D.); (A.K.)
| | - Robert E. Campbell
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada; (R.D.); (A.K.)
- Department of Chemistry, Graduate School of Science, The University of Tokyo, Bunkyo City, Tokyo 113-0033, Japan
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Mann FA, Herrmann N, Opazo F, Kruss S. Quantendefekte als Werkzeugkasten für die kovalente Funktionalisierung von Kohlenstoffnanoröhren mit Peptiden und Proteinen. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202003825] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Florian A. Mann
- Institut für Physikalische Chemie Georg-August Universität Tammannstraße 6 37077 Göttingen Deutschland
| | - Niklas Herrmann
- Institut für Physikalische Chemie Georg-August Universität Tammannstraße 6 37077 Göttingen Deutschland
| | - Felipe Opazo
- Center for Biostructural Imaging of Neurodegeneration Von-Siebold-Straße 3a 37075 Göttingen Deutschland
| | - Sebastian Kruss
- Institut für Physikalische Chemie Georg-August Universität Tammannstraße 6 37077 Göttingen Deutschland
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31
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Dinarvand M, Elizarova S, Daniel J, Kruss S. Imaging of Monoamine Neurotransmitters with Fluorescent Nanoscale Sensors. Chempluschem 2020; 85:1465-1480. [DOI: 10.1002/cplu.202000248] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 06/05/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Meshkat Dinarvand
- Institute of Physical ChemistryGöttingen University Tammannstrasse 2 37077 Göttingen Germany
| | - Sofia Elizarova
- Department of Molecular NeurobiologyMax Planck Institute of Experimental Medicine 37077 Göttingen Germany
| | - James Daniel
- Department of Molecular NeurobiologyMax Planck Institute of Experimental Medicine 37077 Göttingen Germany
| | - Sebastian Kruss
- Institute of Physical ChemistryGöttingen University Tammannstrasse 2 37077 Göttingen Germany
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32
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Meyer D, Telele S, Zelená A, Gillen AJ, Antonucci A, Neubert E, Nißler R, Mann FA, Erpenbeck L, Boghossian AA, Köster S, Kruss S. Transport and programmed release of nanoscale cargo from cells by using NETosis. NANOSCALE 2020; 12:9104-9115. [PMID: 32286598 DOI: 10.1039/d0nr00864h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Cells can take up nanoscale materials, which has important implications for understanding cellular functions, biocompatibility as well as biomedical applications. Controlled uptake, transport and triggered release of nanoscale cargo is one of the great challenges in biomedical applications of nanomaterials. Here, we study how human immune cells (neutrophilic granulocytes, neutrophils) take up nanomaterials and program them to release this cargo after a certain time period. For this purpose, we let neutrophils phagocytose DNA-functionalized single-walled carbon nanotubes (SWCNTs) in vitro that fluoresce in the near infrared (980 nm) and serve as sensors for small molecules. Cells still migrate, follow chemical gradients and respond to inflammatory signals after uptake of the cargo. To program release, we make use of neutrophil extracellular trap formation (NETosis), a novel cell death mechanism that leads to chromatin swelling, subsequent rupture of the cellular membrane and release of the cell's whole content. By using the process of NETosis, we can program the time point of cargo release via the initial concentration of stimuli such as phorbol 12-myristate-13-acetate (PMA) or lipopolysaccharide (LPS). At intermediate stimulation, cells continue to migrate, follow gradients and surface cues for around 30 minutes and up to several hundred micrometers until they stop and release the SWCNTs. The transported and released SWCNT sensors are still functional as shown by subsequent detection of the neurotransmitter dopamine and reactive oxygen species (H2O2). In summary, we hijack a biological process (NETosis) and demonstrate how neutrophils transport and release functional nanomaterials.
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Affiliation(s)
- Daniel Meyer
- Institute of Physical Chemistry, Göttingen University, 37077 Göttingen, Germany.
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Wu H, Nißler R, Morris V, Herrmann N, Hu P, Jeon SJ, Kruss S, Giraldo JP. Monitoring Plant Health with Near-Infrared Fluorescent H 2O 2 Nanosensors. NANO LETTERS 2020; 20:2432-2442. [PMID: 32097014 DOI: 10.1021/acs.nanolett.9b05159] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Near-infrared (nIR) fluorescent single-walled carbon nanotubes (SWCNTs) were designed and interfaced with leaves of Arabidopsis thaliana plants to report hydrogen peroxide (H2O2), a key signaling molecule associated with the onset of plant stress. The sensor nIR fluorescence response (>900 nm) is quenched by H2O2 with selectivity against other stress-associated signaling molecules and within the plant physiological range (10-100 H2O2 μM). In vivo remote nIR imaging of H2O2 sensors enabled optical monitoring of plant health in response to stresses including UV-B light (-11%), high light (-6%), and a pathogen-related peptide (flg22) (-10%), but not mechanical leaf wounding (<3%). The sensor's high biocompatibility was reflected on similar leaf cell death (<5%) and photosynthetic rates to controls without SWCNT. These optical nanosensors report early signs of stress and will improve our understanding of plant stress communication, provide novel tools for precision agriculture, and optimize the use of agrochemicals in the environment.
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Affiliation(s)
- Honghong Wu
- Department of Botany and Plant Sciences, University of California, Riverside, California 92521, United States
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Robert Nißler
- Institute of Physical Chemistry, Georg August University, Göttingen, 37077 Göttingen, Germany
| | - Victoria Morris
- Department of Botany and Plant Sciences, University of California, Riverside, California 92521, United States
| | - Niklas Herrmann
- Institute of Physical Chemistry, Georg August University, Göttingen, 37077 Göttingen, Germany
| | - Peiguang Hu
- Department of Botany and Plant Sciences, University of California, Riverside, California 92521, United States
| | - Su-Ji Jeon
- Department of Botany and Plant Sciences, University of California, Riverside, California 92521, United States
| | - Sebastian Kruss
- Institute of Physical Chemistry, Georg August University, Göttingen, 37077 Göttingen, Germany
| | - Juan Pablo Giraldo
- Department of Botany and Plant Sciences, University of California, Riverside, California 92521, United States
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Selvaggio G, Chizhik A, Nißler R, Kuhlemann L, Meyer D, Vuong L, Preiß H, Herrmann N, Mann FA, Lv Z, Oswald TA, Spreinat A, Erpenbeck L, Großhans J, Karius V, Janshoff A, Pablo Giraldo J, Kruss S. Exfoliated near infrared fluorescent silicate nanosheets for (bio)photonics. Nat Commun 2020; 11:1495. [PMID: 32198383 PMCID: PMC7083911 DOI: 10.1038/s41467-020-15299-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 02/28/2020] [Indexed: 12/31/2022] Open
Abstract
Imaging of complex (biological) samples in the near-infrared (NIR) is beneficial due to reduced light scattering, absorption, phototoxicity, and autofluorescence. However, there are few NIR fluorescent materials known and suitable for biomedical applications. Here we exfoliate the layered pigment CaCuSi4O10 (Egyptian Blue, EB) via ball milling and facile tip sonication into NIR fluorescent nanosheets (EB-NS). The size of EB-NS can be tailored to diameters <20 nm and heights down to 1 nm. EB-NS fluoresce at 910 nm and the fluorescence intensity correlates with the number of Cu2+ ions. Furthermore, EB-NS display no bleaching and high brightness compared with other NIR fluorophores. The versatility of EB-NS is demonstrated by in-vivo single-particle tracking and microrheology measurements in Drosophila melanogaster embryos. EB-NS can be uptaken by plants and remotely detected in a low-cost stand-off detection setup. In summary, EB-NS have the potential for a wide range of bioimaging applications.
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Affiliation(s)
- Gabriele Selvaggio
- Institute of Physical Chemistry, University of Göttingen, Göttingen, 37077, Germany
| | - Alexey Chizhik
- Third Institute of Physics, University of Göttingen, Göttingen, 37077, Germany
| | - Robert Nißler
- Institute of Physical Chemistry, University of Göttingen, Göttingen, 37077, Germany
| | - Llyas Kuhlemann
- Institute of Physical Chemistry, University of Göttingen, Göttingen, 37077, Germany
| | - Daniel Meyer
- Institute of Physical Chemistry, University of Göttingen, Göttingen, 37077, Germany
| | - Loan Vuong
- Institute of Organic and Biomolecular Chemistry, University of Göttingen, Göttingen, 37077, Germany
| | - Helen Preiß
- Institute of Physical Chemistry, University of Göttingen, Göttingen, 37077, Germany
| | - Niklas Herrmann
- Institute of Physical Chemistry, University of Göttingen, Göttingen, 37077, Germany
| | - Florian A Mann
- Institute of Physical Chemistry, University of Göttingen, Göttingen, 37077, Germany
| | - Zhiyi Lv
- Institute of Developmental Biochemistry, Medical School, University of Göttingen, Göttingen, 37077, Germany
| | - Tabea A Oswald
- Institute of Organic and Biomolecular Chemistry, University of Göttingen, Göttingen, 37077, Germany
| | - Alexander Spreinat
- Institute of Physical Chemistry, University of Göttingen, Göttingen, 37077, Germany
| | - Luise Erpenbeck
- Department of Dermatology, Venereology and Allergology, University Medical Center Göttingen, Göttingen, 37075, Germany
| | - Jörg Großhans
- Institute of Developmental Biochemistry, Medical School, University of Göttingen, Göttingen, 37077, Germany
| | - Volker Karius
- Department of Sedimentology and Environmental Geology, Geoscience Center, University of Göttingen, Göttingen, 37077, Germany
| | - Andreas Janshoff
- Institute of Physical Chemistry, University of Göttingen, Göttingen, 37077, Germany
| | - Juan Pablo Giraldo
- Department of Botany and Plant Sciences, University of California, Riverside, California, 92507, USA
| | - Sebastian Kruss
- Institute of Physical Chemistry, University of Göttingen, Göttingen, 37077, Germany.
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Spreinat A, Selvaggio G, Erpenbeck L, Kruss S. Multispectral near infrared absorption imaging for histology of skin cancer. JOURNAL OF BIOPHOTONICS 2020; 13:e201960080. [PMID: 31602799 PMCID: PMC7065629 DOI: 10.1002/jbio.201960080] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 09/24/2019] [Accepted: 10/02/2019] [Indexed: 05/05/2023]
Abstract
Multispectral imaging combines the spectral resolution of spectroscopy with the spatial resolution of imaging and is therefore very useful for biomedical applications. Currently, histological diagnostics use mainly stainings with standard dyes (eg, hematoxylin + eosin) to identify tumors. This method is not applicable in vivo and provides low amounts of chemical information. Biomolecules absorb near infrared light (NIR, 800-1700 nm) at different wavelengths, which could be used to fingerprint tissue. Here, we built a NIR multispectral absorption imaging setup to study skin tissue samples. NIR light (900-1500 nm) was used for homogenous wide-field transmission illumination and detected by a cooled InGaAs camera. In this setup, images I(x, y, λ) from dermatological samples (melanoma, nodular basal-cell carcinoma, squamous-cell carcinoma) were acquired to distinguish healthy from diseased tissue regions. In summary, we show the potential of multispectral NIR imaging for cancer diagnostics.
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Affiliation(s)
| | | | - Luise Erpenbeck
- Department of Dermatology, Venereology and AllergologyUniversity Medical CenterGöttingenGermany
| | - Sebastian Kruss
- Institute of Physical ChemistryGöttingen UniversityGöttingenGermany
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Hendler-Neumark A, Bisker G. Fluorescent Single-Walled Carbon Nanotubes for Protein Detection. SENSORS (BASEL, SWITZERLAND) 2019; 19:E5403. [PMID: 31817932 PMCID: PMC6960995 DOI: 10.3390/s19245403] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 12/02/2019] [Accepted: 12/05/2019] [Indexed: 01/06/2023]
Abstract
Nanosensors have a central role in recent approaches to molecular recognition in applications like imaging, drug delivery systems, and phototherapy. Fluorescent nanoparticles are particularly attractive for such tasks owing to their emission signal that can serve as optical reporter for location or environmental properties. Single-walled carbon nanotubes (SWCNTs) fluoresce in the near-infrared part of the spectrum, where biological samples are relatively transparent, and they do not photobleach or blink. These unique optical properties and their biocompatibility make SWCNTs attractive for a variety of biomedical applications. Here, we review recent advancements in protein recognition using SWCNTs functionalized with either natural recognition moieties or synthetic heteropolymers. We emphasize the benefits of the versatile applicability of the SWCNT sensors in different systems ranging from single-molecule level to in-vivo sensing in whole animal models. Finally, we discuss challenges, opportunities, and future perspectives.
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Affiliation(s)
| | - Gili Bisker
- Department of Biomedical Engineering, Faculty of Engineering, Tel-Aviv University, Tel Aviv 6997801, Israel;
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A Review of Neurotransmitters Sensing Methods for Neuro-Engineering Research. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9214719] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Neurotransmitters as electrochemical signaling molecules are essential for proper brain function and their dysfunction is involved in several mental disorders. Therefore, the accurate detection and monitoring of these substances are crucial in brain studies. Neurotransmitters are present in the nervous system at very low concentrations, and they mixed with many other biochemical molecules and minerals, thus making their selective detection and measurement difficult. Although numerous techniques to do so have been proposed in the literature, neurotransmitter monitoring in the brain is still a challenge and the subject of ongoing research. This article reviews the current advances and trends in neurotransmitters detection techniques, including in vivo sampling and imaging techniques, electrochemical and nano-object sensing techniques for in vitro and in vivo detection, as well as spectrometric, analytical and derivatization-based methods mainly used for in vitro research. The document analyzes the strengths and weaknesses of each method, with the aim to offer selection guidelines for neuro-engineering research.
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Gillen AJ, Boghossian AA. Non-covalent Methods of Engineering Optical Sensors Based on Single-Walled Carbon Nanotubes. Front Chem 2019; 7:612. [PMID: 31616652 PMCID: PMC6763700 DOI: 10.3389/fchem.2019.00612] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 08/21/2019] [Indexed: 12/31/2022] Open
Abstract
Optical sensors based on single-walled carbon nanotubes (SWCNTs) demonstrate tradeoffs that limit their use in in vivo and in vitro environments. Sensor characteristics are primarily governed by the non-covalent wrapping used to suspend the hydrophobic SWCNTs in aqueous solutions, and we herein review the advantages and disadvantages of several of these different wrappings. Sensors based on surfactant wrappings can show enhanced quantum efficiency, high stability, scalability, and diminished selectivity. Conversely, sensors based on synthetic and bio-polymer wrappings tend to show lower quantum efficiency, stability, and scalability, while demonstrating improved selectivity. Major efforts have focused on optimizing sensors based on DNA wrappings, which have intermediate properties that can be improved through synthetic modifications. Although SWCNT sensors have, to date, been mainly engineered using empirical approaches, herein we highlight alternative techniques based on iterative screening that offer a more guided approach to tuning sensor properties. These more rational techniques can yield new combinations that incorporate the advantages of the diverse nanotube wrappings available to create high performance optical sensors.
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Dinarvand M, Neubert E, Meyer D, Selvaggio G, Mann FA, Erpenbeck L, Kruss S. Near-Infrared Imaging of Serotonin Release from Cells with Fluorescent Nanosensors. NANO LETTERS 2019; 19:6604-6611. [PMID: 31418577 DOI: 10.1021/acs.nanolett.9b02865] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Serotonin is an important neurotransmitter involved in various functions of the nervous, blood, and immune system. In general, detection of small biomolecules such as serotonin in real time with high spatial and temporal resolution remains challenging with conventional sensors and methods. In this work, we designed a near-infrared (nIR) fluorescent nanosensor (NIRSer) based on fluorescent single-walled carbon nanotubes (SWCNTs) to image the release of serotonin from human blood platelets in real time. The nanosensor consists of a nonbleaching SWCNT backbone, which is fluorescent in the beneficial nIR tissue transparency window (800-1700 nm) and a serotonin binding DNA aptamer. The fluorescence of the NIRSer sensor (995 nm emission wavelength for (6,5)-SWCNTs) increases in response to serotonin by a factor up to 1.8. It detects serotonin reversibly with a dissociation constant of 301 nM ± 138 nM and a dynamic linear range in the physiologically relevant region from 100 nM to 1 μM. As a proof of principle, we detected serotonin release patterns from activated platelets on the single-cell level. Imaging of the nanosensors around and under the platelets enabled us to locate hot spots of serotonin release and quantify the time delay (≈ 21-30 s) between stimulation and release in a population of platelets, highlighting the spatiotemporal resolution of this nanosensor approach. In summary, we report a nIR fluorescent nanosensor for the neurotransmitter serotonin and show its potential for imaging of chemical communication between cells.
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Affiliation(s)
- Meshkat Dinarvand
- Institute of Physical Chemistry , Göttingen University , Göttingen 37077 , Germany
| | - Elsa Neubert
- Institute of Physical Chemistry , Göttingen University , Göttingen 37077 , Germany
- Department of Dermatology, Venereology, and Allergology , University Medical Center , Göttingen 37075 , Germany
| | - Daniel Meyer
- Institute of Physical Chemistry , Göttingen University , Göttingen 37077 , Germany
| | - Gabriele Selvaggio
- Institute of Physical Chemistry , Göttingen University , Göttingen 37077 , Germany
| | - Florian A Mann
- Institute of Physical Chemistry , Göttingen University , Göttingen 37077 , Germany
| | - Luise Erpenbeck
- Department of Dermatology, Venereology, and Allergology , University Medical Center , Göttingen 37075 , Germany
| | - Sebastian Kruss
- Institute of Physical Chemistry , Göttingen University , Göttingen 37077 , Germany
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Mann FA, Lv Z, Großhans J, Opazo F, Kruss S. Nanobody‐Conjugated Nanotubes for Targeted Near‐Infrared In Vivo Imaging and Sensing. Angew Chem Int Ed Engl 2019; 58:11469-11473. [DOI: 10.1002/anie.201904167] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 05/03/2019] [Indexed: 12/16/2022]
Affiliation(s)
- Florian A. Mann
- Institute of Physical ChemistryGeorg-August Universität Göttingen Tammannstraße 6 37077 Göttingen Germany
| | - Zhiyi Lv
- Institut Für EntwicklungsbiochemieUMG/Georg-August Universität Göttingen Justus-von-Liebig Weg 11 37077 Göttingen Germany
| | - Jörg Großhans
- Institut Für EntwicklungsbiochemieUMG/Georg-August Universität Göttingen Justus-von-Liebig Weg 11 37077 Göttingen Germany
| | - Felipe Opazo
- Center for Biostructural Imaging of Neurodegeneration Von-Siebold-Strasse 3a 37075 Göttingen Germany
- Center for Nanoscale Microscopy and Molecular Physiology of the Brain (CNMPB) Humboldtallee 23 37073 Göttingen Germany
- NanoTag Biotechnologies GmbH Rudolf-Wissell-Straße 28a 37079 Göttingen Germany
| | - Sebastian Kruss
- Institute of Physical ChemistryGeorg-August Universität Göttingen Tammannstraße 6 37077 Göttingen Germany
- Center for Nanoscale Microscopy and Molecular Physiology of the Brain (CNMPB) Humboldtallee 23 37073 Göttingen Germany
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Mann FA, Lv Z, Großhans J, Opazo F, Kruss S. Nanoröhren‐Nanobody‐Konjugate als zielgerichtete Sonden und Marker für die In‐vivo‐Nahinfrarot‐Bildgebung. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Florian A. Mann
- Institut für Physikalische ChemieGeorg-August Universität Göttingen Tammannstraße 6 37077 Göttingen Deutschland
| | - Zhiyi Lv
- Institut Für EntwicklungsbiochemieUMG/Georg-August Universität Göttingen Justus-von-Liebig Weg 11 37077 Göttingen Deutschland
| | - Jörg Großhans
- Institut Für EntwicklungsbiochemieUMG/Georg-August Universität Göttingen Justus-von-Liebig Weg 11 37077 Göttingen Deutschland
| | - Felipe Opazo
- Center for Biostructural Imaging of Neurodegeneration Von-Siebold-Strasse 3a 37075 Göttingen Deutschland
- Center for Nanoscale Microscopy and Molecular Physiology of the Brain (CNMPB) Humboldtallee 23 37073 Göttingen Deutschland
- NanoTag Biotechnologies GmbH Rudolf-Wissell-Straße 28a 37079 Göttingen Deutschland
| | - Sebastian Kruss
- Institut für Physikalische ChemieGeorg-August Universität Göttingen Tammannstraße 6 37077 Göttingen Deutschland
- Center for Nanoscale Microscopy and Molecular Physiology of the Brain (CNMPB) Humboldtallee 23 37073 Göttingen Deutschland
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Nißler R, Mann FA, Preiß H, Selvaggio G, Herrmann N, Kruss S. Chirality enriched carbon nanotubes with tunable wrapping via corona phase exchange purification (CPEP). NANOSCALE 2019; 11:11159-11166. [PMID: 31149692 DOI: 10.1039/c9nr03258d] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Single-walled carbon nanotubes (SWCNTs) have unique photophysical properties and serve as building blocks for biosensors, functional materials and devices. For many applications it is crucial to use chirality-pure SWCNTs, which requires sophisticated processes. Purification procedures such as wrapping by certain polymers, phase separation, density gradient centrifugation or gel chromatography have been developed and yield distinct SWCNT species wrapped by a specific polymer or surfactant. However, many applications require a different organic functionalization (corona) around the SWCNTs instead of the one used for the purification process. Here, we present a novel efficient and straightforward process to gain chirality pure SWCNTs with tunable functionalization. Our approach uses polyfluorene (PFO) polymers to enrich certain chiralities but the polymer is removed again and finally exchanged to any desired organic phase. We demonstrate this concept by dispersing SWCNTs in poly[(9,9-dioctylfluorenyl-2,7-diyl)-alt-co-(6,6'-{2,2'-bipyridine})] (PFO-BPy), which is known to preferentially solubilize (6,5)-SWCNTs. Then PFO-BPy is removed and recycled, while letting the SWCNTs adsorb/agglomerate on sodium chloride (NaCl) crystals, which act as a toluene-stable but water-soluble filler material. In the last step these purified SWCNTs are redispersed in different polymers, surfactants and ssDNA. This corona phase exchange purification (CPEP) approach was also extended to other PFO variants to enrich and functionalize (7,5)-SWCNTs. CPEP purified and functionalized SWCNTs display monodisperse nIR spectra, which are important for fundamental studies and applications that rely on spectral changes. We show this advantage for SWCNT-based nIR fluorescent sensors for the neurotransmitter dopamine and red-shifted sp3 defect peaks . In summary, CPEP makes use of PFO polymers for chirality enrichment but provides access to chirality enriched SWCNTs functionalized in any desired polymer, surfactant or biopolymer.
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Affiliation(s)
- Robert Nißler
- Institute of Physical Chemistry, Göttingen University, Germany.
| | - Florian A Mann
- Institute of Physical Chemistry, Göttingen University, Germany.
| | - Helen Preiß
- Institute of Physical Chemistry, Göttingen University, Germany.
| | | | - Niklas Herrmann
- Institute of Physical Chemistry, Göttingen University, Germany.
| | - Sebastian Kruss
- Institute of Physical Chemistry, Göttingen University, Germany.
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Glutathione influence on the photoluminescence from semiconducting single-walled carbon nanotubes compared with other thiol compounds. Chem Phys 2019. [DOI: 10.1016/j.chemphys.2018.07.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Del Bonis-O’Donnell JT, Chio L, Dorlhiac GF, McFarlane IR, Landry MP. Advances in Nanomaterials for Brain Microscopy. NANO RESEARCH 2018; 11:5144-5172. [PMID: 31105899 PMCID: PMC6516768 DOI: 10.1007/s12274-018-2145-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 07/05/2018] [Accepted: 07/08/2018] [Indexed: 05/19/2023]
Abstract
Microscopic imaging of the brain continues to reveal details of its structure, connectivity, and function. To further improve our understanding of the emergent properties and functions of neural circuits, new methods are necessary to directly visualize the relationship between brain structure, neuron activity, and neurochemistry. Advances in engineering the chemical and optical properties of nanomaterials concurrent with developments in deep-tissue microscopy hold tremendous promise for overcoming the current challenges associated with in vivo brain imaging, particularly for imaging the brain through optically-dense brain tissue, skull, and scalp. To this end, developments in nanomaterials offer much promise toward implementing tunable chemical functionality for neurochemical targeting and sensing, and fluorescence stability for long-term imaging. In this review, we summarize current brain microscopy methods and describe the diverse classes of nanomaterials recently leveraged as contrast agents and functional probes for microscopic optical imaging of the brain.
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Affiliation(s)
| | - Linda Chio
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA 94720
| | - Gabriel F Dorlhiac
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA 94720
| | - Ian R McFarlane
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA 94720
| | - Markita P Landry
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA 94720
- Innovative Genomics Institute (IGI), Berkeley, CA 94720
- California Institute for Quantitative Biosciences, QB3, University of California, Berkeley, CA 94720
- Chan-Zuckerberg Biohub, San Francisco, CA 94158
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Wang J. Near infrared optical biosensor based on peptide functionalized single-walled carbon nanotubes hybrids for 2,4,6-trinitrotoluene (TNT) explosive detection. Anal Biochem 2018; 550:49-53. [DOI: 10.1016/j.ab.2018.04.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 03/30/2018] [Accepted: 04/11/2018] [Indexed: 10/17/2022]
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Polo E, Nitka TT, Neubert E, Erpenbeck L, Vuković L, Kruss S. Control of Integrin Affinity by Confining RGD Peptides on Fluorescent Carbon Nanotubes. ACS APPLIED MATERIALS & INTERFACES 2018; 10:17693-17703. [PMID: 29708725 DOI: 10.1021/acsami.8b04373] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Integrins are transmembrane receptors that mediate cell-adhesion, signaling cascades and platelet-mediated blood clotting. Most integrins bind to the common short peptide Arg-Gly-Asp (RGD). The conformational freedom of the RGD motif determines how strong and to which integrins it binds. Here, we present a novel approach to tune binding constants by confining RGD peptide motifs via noncovalent adsorption of single-stranded DNA (ssDNA) anchors onto single-walled carbon nanotubes (SWCNTs). Semiconducting SWCNTs display fluorescence in the near-infrared (nIR) region and are versatile fluorescent building blocks for imaging and biosensing. The basic idea of this approach is that the DNA adsorbed on the SWCNT surface determines the conformational freedom of the RGD motif and affects binding affinities. The RGD motif was conjugated to different ssDNA sequences in both linear ssDNA-RGD and bridged ssDNA-RGD-ssDNA geometries. Molecular dynamics (MD) simulations show that the RGD motif in all the synthesized systems is mostly exposed to solvent and thus available for binding, but its flexibility depends on the exact geometry. The affinity for the human platelet integrin αIIbβ3 could be modulated up to 15-fold by changing the ssDNA sequence. IC50 values varied from 309 nM for (C)20-RGD/SWCNT hybrids to 29 nM for (GT)15-RGD/SWCNT hybrids. When immobilized onto surface adhesion of epithelial cells increased 6-fold for (GT)15-RGD/SWCNTs. (GT)15-RGD/SWCNTs also increased the number of adhering human platelets by a factor of 4.8. Additionally, αIIbβ3 integrins on human platelets were labeled in the nIR by incubating them with these ssDNA-peptide/SWCNT hybrids. In summary, we show that ssDNA-peptide hybrid structures noncovalently adsorb onto SWCNTs and serve as recognition units for cell surface receptors such as integrins. The DNA sequence affects the overall RGD affinity, which is a versatile and straightforward approach to tune binding affinities. In combination with the nIR fluorescence properties of SWCNTs, these new hybrid materials promise many applications in integrin targeting and bioimaging.
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Affiliation(s)
- Elena Polo
- Institute of Physical Chemistry , Göttingen University , Tammanstrasse 6 , 37077 Göttingen , Germany
| | - Tadeusz T Nitka
- Department of Chemistry and Biochemistry , The University of Texas at El Paso , El Paso , Texas 79968 , United States
| | - Elsa Neubert
- Institute of Physical Chemistry , Göttingen University , Tammanstrasse 6 , 37077 Göttingen , Germany
- University Medical Center, Department of Dermatology , Göttingen University , 37077 Göttingen , Germany
| | - Luise Erpenbeck
- University Medical Center, Department of Dermatology , Göttingen University , 37077 Göttingen , Germany
| | - Lela Vuković
- Department of Chemistry and Biochemistry , The University of Texas at El Paso , El Paso , Texas 79968 , United States
| | - Sebastian Kruss
- Institute of Physical Chemistry , Göttingen University , Tammanstrasse 6 , 37077 Göttingen , Germany
- Center for Nanoscale Microscopy and Molecular Physiology of the Brain (CNMPB) , 37073 Göttingen , Germany
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Tomura A, Umemura K. A convenient method of attaching fluorescent dyes on single-walled carbon nanotubes pre-wrapped with DNA molecules. Anal Biochem 2018; 547:1-6. [PMID: 29428378 DOI: 10.1016/j.ab.2018.02.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 01/17/2018] [Accepted: 02/07/2018] [Indexed: 10/18/2022]
Abstract
We demonstrated the attachment of different kinds of dyes, Uranine, Rhodamime 800 (R800), and Indocyanine green (ICG), to single-walled carbon nanotubes pre-wrapped with single-stranded DNAs (ssDNA-SWCNTs). A new but simple method was employed, in which a dye solution was added to ssDNA-SWCNTs that had been prepared beforehand in the conventional way. Resulting conjugates of dyes, DNA, and SWCNTs were precisely evaluated by ultraviolet to near-infrared fluorescence/absorbance spectrometry and atomic force microscopy. In particular, simultaneous measurements of fluorescence and absorbance spectroscopy enabled us to find differences in the behaviors of the dyes on SWCNT surfaces. As a result, the fluorescence/absorbance spectra of dyes showed significant changes upon adsorption on SWCNTs. The fluorescence/absorbance peaks of Uranine, R800, and ICG were quenched by 41.3/2.8%, 72.3/48.9%, and 88.3/45.0%, respectively, in the presence of 11.5 μg/mL SWCNTs. We concluded firstly that by pre-wrapping SWCNTs with ssDNA, stable hybrids with these components were obtained even if the dyes used were relatively hydrophobic and secondly that Uranine retained light absorption on the surface of SWCNT while R800 and ICG did not.
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Affiliation(s)
- Akihiro Tomura
- Biophysics Section, Department of Physics, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo, 162-8601, Japan.
| | - Kazuo Umemura
- Biophysics Section, Department of Physics, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo, 162-8601, Japan.
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Mann FA, Horlebein J, Meyer NF, Meyer D, Thomas F, Kruss S. Carbon Nanotubes Encapsulated in Coiled-Coil Peptide Barrels. Chemistry 2018; 24:12241-12245. [DOI: 10.1002/chem.201800993] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Florian A. Mann
- Institute of Physical Chemistry; Georg-August Universität Göttingen; Tammannstraße 6 37077 Göttingen Germany
| | - Jan Horlebein
- Institute of Physical Chemistry; Georg-August Universität Göttingen; Tammannstraße 6 37077 Göttingen Germany
| | - Nils Frederik Meyer
- Institute of Organic and Biomolecular Chemistry; Georg-August Universität Göttingen; Tammannstraße 2 37077 Göttingen Germany
| | - Daniel Meyer
- Institute of Physical Chemistry; Georg-August Universität Göttingen; Tammannstraße 6 37077 Göttingen Germany
| | - Franziska Thomas
- Institute of Organic and Biomolecular Chemistry; Georg-August Universität Göttingen; Tammannstraße 2 37077 Göttingen Germany
- Center for Biostructural Imaging of Neurodegeneration; Von-Siebold-Strasse 3a 37075 Göttingen Germany
| | - Sebastian Kruss
- Institute of Physical Chemistry; Georg-August Universität Göttingen; Tammannstraße 6 37077 Göttingen Germany
- Center for Nanoscale Microscopy and Molecular Physiology of the Brain (CNMPB); Humboldtallee 23 37073 Göttingen Germany
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Feng P, Chen Y, Zhang L, Qian CG, Xiao X, Han X, Shen QD. Near-Infrared Fluorescent Nanoprobes for Revealing the Role of Dopamine in Drug Addiction. ACS APPLIED MATERIALS & INTERFACES 2018; 10:4359-4368. [PMID: 29308644 DOI: 10.1021/acsami.7b12005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Brain imaging techniques enable visualizing the activity of central nervous system without invasive neurosurgery. Dopamine is an important neurotransmitter. Its fluctuation in brain leads to a wide range of diseases and disorders, like drug addiction, depression, and Parkinson's disease. We designed near-infrared fluorescence dopamine-responsive nanoprobes (DRNs) for brain activity imaging during drug abuse and addiction process. On the basis of light-induced electron transfer between DRNs and dopamine and molecular wire effect of the DRNs, we can track the dynamical change of the neurotransmitter level in the physiological environment and the releasing of the neurotransmitter in living dopaminergic neurons in response to nicotine stimulation. The functional near-infrared fluorescence imaging can dynamically track the dopamine level in the mice midbrain under normal or drug-activated condition and evaluate the long-term effect of addictive substances to the brain. This strategy has the potential for studying neural activity under physiological condition.
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Affiliation(s)
- Peijian Feng
- Department of Polymer Science and Engineering, Key Laboratory of High Performance Polymer Materials and Technology of MOE, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry & Chemical Engineering, Nanjing University , Nanjing 210023, China
| | - Yulei Chen
- Department of Polymer Science and Engineering, Key Laboratory of High Performance Polymer Materials and Technology of MOE, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry & Chemical Engineering, Nanjing University , Nanjing 210023, China
| | - Lei Zhang
- Department of Biomedical Engineering, College of Engineering and Applied Science, Nanjing University , Nanjing 210093, China
| | - Cheng-Gen Qian
- Department of Polymer Science and Engineering, Key Laboratory of High Performance Polymer Materials and Technology of MOE, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry & Chemical Engineering, Nanjing University , Nanjing 210023, China
| | - Xuanzhong Xiao
- Department of Polymer Science and Engineering, Key Laboratory of High Performance Polymer Materials and Technology of MOE, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry & Chemical Engineering, Nanjing University , Nanjing 210023, China
| | - Xu Han
- Department of Polymer Science and Engineering, Key Laboratory of High Performance Polymer Materials and Technology of MOE, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry & Chemical Engineering, Nanjing University , Nanjing 210023, China
| | - Qun-Dong Shen
- Department of Polymer Science and Engineering, Key Laboratory of High Performance Polymer Materials and Technology of MOE, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry & Chemical Engineering, Nanjing University , Nanjing 210023, China
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