1
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Unnikrishnan M, Wang Y, Gruebele M, Murphy CJ. Nanoparticle-assisted tubulin assembly is environment dependent. Proc Natl Acad Sci U S A 2024; 121:e2403034121. [PMID: 38954547 DOI: 10.1073/pnas.2403034121] [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: 02/12/2024] [Accepted: 05/30/2024] [Indexed: 07/04/2024] Open
Abstract
Nanomaterials acquire a biomolecular corona upon introduction to biological media, leading to biological transformations such as changes in protein function, unmasking of epitopes, and protein fibrilization. Ex vivo studies to investigate the effect of nanoparticles on protein-protein interactions are typically performed in buffer and are rarely measured quantitatively in live cells. Here, we measure the differential effect of silica nanoparticles on protein association in vitro vs. in mammalian cells. BtubA and BtubB are a pair of bacterial tubulin proteins identified in Prosthecobacter strains that self-assemble like eukaryotic tubulin, first into dimers and then into microtubules in vitro or in vivo. Förster resonance energy transfer labeling of each of the Btub monomers with a donor (mEGFP) and acceptor (mRuby3) fluorescent protein provides a quantitative tool to measure their binding interactions in the presence of unfunctionalized silica nanoparticles in buffer and in cells using fluorescence spectroscopy and microscopy. We show that silica nanoparticles enhance BtubAB dimerization in buffer due to protein corona formation. However, these nanoparticles have little effect on bacterial tubulin self-assembly in the complex mammalian cellular environment. Thus, the effect of nanomaterials on protein-protein interactions may not be readily translated from the test tube to the cell in the absence of particle surface functionalization that can enable targeted protein-nanoparticle interactions to withstand competitive binding in the nanoparticle corona from other biomolecules.
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Affiliation(s)
- Mahima Unnikrishnan
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, IL 61801
| | - Yuhan Wang
- Center for Biophysics and Quantitative Biology, University of Illinois Urbana-Champaign, Urbana, IL 61801
| | - Martin Gruebele
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, IL 61801
- Center for Biophysics and Quantitative Biology, University of Illinois Urbana-Champaign, Urbana, IL 61801
- Department of Physics, University of Illinois Urbana-Champaign, Urbana, IL 61801
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL 61801
| | - Catherine J Murphy
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, IL 61801
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL 61801
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2
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Luo HY, Jiang C, Dou SX, Wang PY, Li H. Quantum Dot-Based Three-Dimensional Single-Particle Tracking Characterizes the Evolution of Spatiotemporal Heterogeneity in Necrotic Cells. Anal Chem 2024. [PMID: 38979688 DOI: 10.1021/acs.analchem.4c00097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/10/2024]
Abstract
Cell death is a fundamental biological process with different modes including apoptosis and necrosis. In contrast to programmed apoptosis, necrosis was previously considered disordered and passive, but it is now being realized to be under regulation by certain biological pathways. However, the intracellular dynamics that coordinates with cellular structure changes during necrosis remains unknown, limiting our understanding of the principles of necrosis. Here, we characterized the spatiotemporal intracellular diffusion dynamics in cells undergoing necrosis, using three-dimensional single-particle tracking of quantum dots. We found temporally increased diffusion rates in necrotic cells and spatially enhanced diffusion heterogeneity in the cell periphery, which could be attributed to the reduced molecular crowding resulting from cell swelling and peripheral blebbing, respectively. Moreover, the three-dimensional intracellular diffusion transits from strong anisotropy to nearly isotropy, suggesting a remodeling of the cytoarchitecture that relieves the axial constraint on intracellular diffusion during necrosis. Our results reveal the remarkable alterations of intracellular diffusion dynamics and biophysical properties in necrosis, providing insight into the well-organized nonequilibrium necrotic cell death from a biophysical perspective.
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Affiliation(s)
- Hong-Yu Luo
- Beijing National Laboratory for Condensed Matter Physics and Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chao Jiang
- Beijing National Laboratory for Condensed Matter Physics and Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shuo-Xing Dou
- Beijing National Laboratory for Condensed Matter Physics and Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Peng-Ye Wang
- Beijing National Laboratory for Condensed Matter Physics and Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
| | - Hui Li
- School of Systems Science and Institute of Nonequilibrium Systems, Beijing Normal University, Beijing 100875, China
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3
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Magnetic Nanoprobes for Spatio-Mechanical Manipulation in Single Cells. NANOMATERIALS 2021; 11:nano11092267. [PMID: 34578584 PMCID: PMC8471295 DOI: 10.3390/nano11092267] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/25/2021] [Accepted: 08/27/2021] [Indexed: 02/08/2023]
Abstract
Magnetic nanoparticles (MNPs) are widely known as valuable agents for biomedical applications. Recently, MNPs were further suggested to be used for a remote and non-invasive manipulation, where their spatial redistribution or force response in a magnetic field provides a fine-tunable stimulus to a cell. Here, we investigated the properties of two different MNPs and assessed their suitability for spatio-mechanical manipulations: semisynthetic magnetoferritin nanoparticles and fully synthetic 'nanoflower'-shaped iron oxide nanoparticles. As well as confirming their monodispersity in terms of structure, surface potential, and magnetic response, we monitored the MNP performance in a living cell environment using fluorescence microscopy and asserted their biocompatibility. We then demonstrated facilitated spatial redistribution of magnetoferritin compared to 'nanoflower'-NPs after microinjection, and a higher magnetic force response of these NPs compared to magnetoferritin inside a cell. Our remote manipulation assays present these tailored magnetic materials as suitable agents for applications in magnetogenetics, biomedicine, or nanomaterial research.
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4
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Activity of CdTe Quantum-Dot-Tagged Superoxide Dismutase and Its Analysis in Capillary Electrophoresis. Int J Mol Sci 2021; 22:ijms22116156. [PMID: 34200401 PMCID: PMC8201241 DOI: 10.3390/ijms22116156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 06/02/2021] [Accepted: 06/03/2021] [Indexed: 11/16/2022] Open
Abstract
Quantum dots (QDs) have a broad range of applications in cell biolabeling, cancer treatment, metastasis imaging, and therapeutic drug monitoring. Despite their wide use, relatively little is known about their influence on other molecules. Interactions between QDs and proteins can influence the properties of both nanoparticles and proteins. The effect of mercaptosuccinic acid-capped CdTe QDs on intercellular copper–zinc superoxide dismutase (SOD1)—one of the main enzymatic antioxidants—was investigated. Incubation of SOD1 with QDs caused an increase in SOD1 activity, unlike in the case of CdCl2, which inhibited SOD1. Moreover, this effect on SOD1 increased with the size and potential of QDs, although the effect became clearly visible in higher concentrations of QDs. The intensity of QD-SOD1 fluorescence, analyzed with the use of capillary electrophoresis with laser-induced fluorescence detection, was dependent on SOD1 concentration. In the case of green QDs, the fluorescence signal decreased with increasing SOD1 concentration. In contrast, the signal strength for Y-QD complexes was not dependent on SOD1 dilutions. The migration time of QDs and their complexes with SOD1 varied depending on the type of QD used. The migration time of G-QD complexes with SOD1 differed slightly. However, in the case of Y-QD complexes with SOD1, the differences in the migration time were not dependent on SOD concentration. This research shows that QDs interact with SOD1 and the influence of QDs on SOD activity is size-dependent. With this knowledge, one might be able to control the activation/inhibition of specific enzymes, such as SOD1.
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5
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Etoc F, Balloul E, Vicario C, Normanno D, Liße D, Sittner A, Piehler J, Dahan M, Coppey M. Non-specific interactions govern cytosolic diffusion of nanosized objects in mammalian cells. NATURE MATERIALS 2018; 17:740-746. [PMID: 29967464 DOI: 10.1038/s41563-018-0120-7] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 05/30/2018] [Indexed: 05/24/2023]
Abstract
The diffusivity of macromolecules in the cytoplasm of eukaryotic cells varies over orders of magnitude and dictates the kinetics of cellular processes. However, a general description that associates the Brownian or anomalous nature of intracellular diffusion to the architectural and biochemical properties of the cytoplasm has not been achieved. Here we measure the mobility of individual fluorescent nanoparticles in living mammalian cells to obtain a comprehensive analysis of cytoplasmic diffusion. We identify a correlation between tracer size, its biochemical nature and its mobility. Inert particles with size equal or below 50 nm behave as Brownian particles diffusing in a medium of low viscosity with negligible effects of molecular crowding. Increasing the strength of non-specific interactions of the nanoparticles within the cytoplasm gradually reduces their mobility and leads to subdiffusive behaviour. These experimental observations and the transition from Brownian to subdiffusive motion can be captured in a minimal phenomenological model.
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Affiliation(s)
- Fred Etoc
- Laboratoire Physico-Chimie, Institut Curie, CNRS UMR168, PSL Research University, Université Pierre et Marie Curie-Paris, Paris, France
- Center for Studies in Physics and Biology, The Rockefeller University, New York, NY, USA
| | - Elie Balloul
- Laboratoire Physico-Chimie, Institut Curie, CNRS UMR168, PSL Research University, Université Pierre et Marie Curie-Paris, Paris, France
| | - Chiara Vicario
- Laboratoire Physico-Chimie, Institut Curie, CNRS UMR168, PSL Research University, Université Pierre et Marie Curie-Paris, Paris, France
- Centre for Genomic Regulation, The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Davide Normanno
- Laboratoire Physico-Chimie, Institut Curie, CNRS UMR168, PSL Research University, Université Pierre et Marie Curie-Paris, Paris, France.
- Centre de Recherche en Cancérologie de Marseille, CNRS UMR7258, Inserm U1068, Aix-Marseille Université UM105, Institut Paoli-Calmettes, Marseilles, France.
| | - Domenik Liße
- Division of Biophysics, Department of Biology, Osnabrück University, Osnabrück, Germany
| | - Assa Sittner
- Department of Infectious Diseases, Israel Institute for Biological Research, Ness Ziona, Israel
| | - Jacob Piehler
- Division of Biophysics, Department of Biology, Osnabrück University, Osnabrück, Germany
| | - Maxime Dahan
- Laboratoire Physico-Chimie, Institut Curie, CNRS UMR168, PSL Research University, Université Pierre et Marie Curie-Paris, Paris, France.
| | - Mathieu Coppey
- Laboratoire Physico-Chimie, Institut Curie, CNRS UMR168, PSL Research University, Université Pierre et Marie Curie-Paris, Paris, France.
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6
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Wang G, Li Z, Ma N. Next-Generation DNA-Functionalized Quantum Dots as Biological Sensors. ACS Chem Biol 2018; 13:1705-1713. [PMID: 29257662 DOI: 10.1021/acschembio.7b00887] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
DNA-functionalized quantum dots (DNA-QDs) have found considerable application in biosensing and bioimaging. Different from the first generation (I-G) DNA-QDs prepared via conventional bioconjugation chemistry, the second generation (II-G) DNA-QDs prepared via one-step DNA-templated QD synthesis features a defined number of DNA valencies (usually monovalency), which is preferable for controlled assembly and biological targeting. In this review, we summarize recent progress in designing QD probes based on II-G DNA-QDs for advanced sensing and imaging applications. It opens up new avenues for highly sensitive and intelligent sensing of a range of disease-relevant biomolecules in vitro and in living cells.
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Affiliation(s)
- Ganglin Wang
- The Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, People’s Republic of China
| | - Zhi Li
- The Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, People’s Republic of China
| | - Nan Ma
- The Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, People’s Republic of China
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7
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Intracellular delivery of colloids: Past and future contributions from microinjection. Adv Drug Deliv Rev 2018; 132:3-15. [PMID: 29935217 DOI: 10.1016/j.addr.2018.06.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 05/06/2018] [Accepted: 06/18/2018] [Indexed: 01/07/2023]
Abstract
The manipulation of single cells and whole tissues has been possible since the early 70's, when semi-automatic injectors were developed. Since then, microinjection has been used to introduce an ever-expanding range of colloids of up to 1000 nm in size into living cells. Besides injecting nucleic acids to study transfection mechanisms, numerous cellular pathways have been unraveled through the introduction of recombinant proteins and blocking antibodies. The injection of nanoparticles has also become popular in recent years to investigate toxicity mechanisms and intracellular transport, and to conceive semi-synthetic cells containing artificial organelles. This article reviews colloidal systems such as proteins, nucleic acids and nanoparticles that have been injected into cells for different research aims, and discusses the scientific advances achieved through them. The colloids' intracellular processing and ultimate fate are also examined from a drug delivery perspective with an emphasis on the differences observed for endocytosed versus microinjected material.
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8
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Liße D, Monzel C, Vicario C, Manzi J, Maurin I, Coppey M, Piehler J, Dahan M. Engineered Ferritin for Magnetogenetic Manipulation of Proteins and Organelles Inside Living Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1700189. [PMID: 28960485 DOI: 10.1002/adma.201700189] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 05/11/2017] [Indexed: 05/20/2023]
Abstract
Magnetogenetics is emerging as a novel approach for remote-controlled manipulation of cellular functions in tissues and organisms with high spatial and temporal resolution. A critical, still challenging issue for these techniques is to conjugate target proteins with magnetic probes that can satisfy multiple colloidal and biofunctional constraints. Here, semisynthetic magnetic nanoparticles are tailored based on human ferritin coupled to monomeric enhanced green fluorescent protein (mEGFP) for magnetic manipulation of proteins inside living cells. This study demonstrates efficient delivery, intracellular stealth properties, and rapid subcellular targeting of those magnetic nanoparticles via GFP-nanobody interactions. By means of magnetic field gradients, rapid spatial reorganization in the cytosol of proteins captured to the nanoparticle surface is achieved. Moreover, exploiting efficient nanoparticle targeting to intracellular membranes, remote-controlled arrest of mitochondrial dynamics using magnetic fields is demonstrated. The studies establish subcellular control of proteins and organelles with unprecedented spatial and temporal resolution, thus opening new prospects for magnetogenetic applications in fundamental cell biology and nanomedicine.
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Affiliation(s)
- Domenik Liße
- Laboratoire Physico-Chimie, Institut Curie, CNRS UMR168, Paris-Science Lettres, Universite Pierre et Marie Curie-Paris 6, 75005, Paris, France
- Department of Biology/Chemistry, Division of Biophysics, University of Osnabrück, 49076, Osnabrück, Germany
| | - Cornelia Monzel
- Laboratoire Physico-Chimie, Institut Curie, CNRS UMR168, Paris-Science Lettres, Universite Pierre et Marie Curie-Paris 6, 75005, Paris, France
| | - Chiara Vicario
- Laboratoire Physico-Chimie, Institut Curie, CNRS UMR168, Paris-Science Lettres, Universite Pierre et Marie Curie-Paris 6, 75005, Paris, France
| | - John Manzi
- Laboratoire Physico-Chimie, Institut Curie, CNRS UMR168, Paris-Science Lettres, Universite Pierre et Marie Curie-Paris 6, 75005, Paris, France
| | - Isabelle Maurin
- Laboratoire de Physique de la Matière Condensée, École Polytechnique, 91128, Palaiseau, France
| | - Mathieu Coppey
- Laboratoire Physico-Chimie, Institut Curie, CNRS UMR168, Paris-Science Lettres, Universite Pierre et Marie Curie-Paris 6, 75005, Paris, France
| | - Jacob Piehler
- Department of Biology/Chemistry, Division of Biophysics, University of Osnabrück, 49076, Osnabrück, Germany
| | - Maxime Dahan
- Laboratoire Physico-Chimie, Institut Curie, CNRS UMR168, Paris-Science Lettres, Universite Pierre et Marie Curie-Paris 6, 75005, Paris, France
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9
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Mazrad ZAI, Choi CA, Kwon YM, In I, Lee KD, Park SY. Design of Surface-Coatable NIR-Responsive Fluorescent Nanoparticles with PEI Passivation for Bacterial Detection and Killing. ACS APPLIED MATERIALS & INTERFACES 2017; 9:33317-33326. [PMID: 28876888 DOI: 10.1021/acsami.7b10688] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The ability to quickly detect and kill bacteria is crucial in the realm of antibiotic resistance. In this study, we synthesized a detection probe consisting of polyethylenimine (PEI)-passivated polydopamine-based fluorescent carbon (FDA:PEI) nanoparticles, generating a cationic adhesive material for bacterial detection that is surface-coatable, photothermal, and antibacterial. The cationic FDA:PEI nanoparticles effectively bound to the anionic bacterial cell wall, resulting in a dramatic quenching effect visible in fluorescence spectra and confocal images. In this fluorescence on/off system, FDA:PEI nanoparticles showed similar bacterial detection abilities between aqueous- and solid-phase assays. Scanning electron microscopy clearly showed the attachment of FDA:PEI nanoparticles to the surface of bacteria, both in solution and as a coating on the surface of a polypropylene film. In addition to detection, this versatile material was found to have an antibacterial potential, via near-infrared irradiation to induce a heat release, killing bacteria by thermolysis. Thus, by exploiting the cationic and catechol moieties on the surface of polydopamine carbon dots, we developed a novel bacterial-detection platform that can be used in a broad range of conditions.
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Affiliation(s)
- Zihnil Adha Islamy Mazrad
- Department of IT Convergence, Korea National University of Transportation , Chungju 380-702, Republic of Korea
| | - Cheong A Choi
- Department of Chemical and Biological Engineering, Korea National University of Transportation , Chungju 380-702, Republic of Korea
| | - Yong Min Kwon
- Department of Chemical and Biological Engineering, Korea National University of Transportation , Chungju 380-702, Republic of Korea
| | - Insik In
- Department of IT Convergence, Korea National University of Transportation , Chungju 380-702, Republic of Korea
- Department of Polymer Science and Engineering, Korea National University of Transportation , Chungju 380-702, Republic of Korea
| | - Kang Dae Lee
- Department of Otolaryngology-Head and Neck Surgery, Kosin University College of Medicine , Busan 49267, South Korea
| | - Sung Young Park
- Department of IT Convergence, Korea National University of Transportation , Chungju 380-702, Republic of Korea
- Department of Chemical and Biological Engineering, Korea National University of Transportation , Chungju 380-702, Republic of Korea
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10
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Tiefenboeck P, Kim JA, Trunk F, Eicher T, Russo E, Teijeira A, Halin C, Leroux JC. Microinjection for the ex Vivo Modification of Cells with Artificial Organelles. ACS NANO 2017; 11:7758-7769. [PMID: 28777538 DOI: 10.1021/acsnano.7b01404] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Microinjection is extensively used across fields to deliver material intracellularly. Here we address the fundamental aspects of introducing exogenous organelles into cells to endow them with artificial functions. Nanocarriers encapsulating biologically active cargo or extreme intraluminal pH were injected directly into the cytosol of cells, where they bypassed subcellular processing pathways and remained intact for several days. Nanocarriers' size was found to dictate their intracellular distribution pattern upon injection, with larger vesicles adopting polarized agglomerated distributions and smaller colloids spreading evenly in the cytosol. This in turn determined the symmetry or asymmetry of their dilution following cell division, ultimately affecting the intracellular dose at a cell population level. As an example of microinjection's applicability, a cell type relevant for cell-based therapies (dendritic cells) was injected with vesicles, and its migratory properties were studied in a co-culture system mimicking lymphatic capillaries.
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Affiliation(s)
- Peter Tiefenboeck
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zürich , 8093 Zürich, Switzerland
| | - Jong Ah Kim
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zürich , 8093 Zürich, Switzerland
| | - Ferdinand Trunk
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zürich , 8093 Zürich, Switzerland
| | - Tamara Eicher
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zürich , 8093 Zürich, Switzerland
| | - Erica Russo
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zürich , 8093 Zürich, Switzerland
| | - Alvaro Teijeira
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zürich , 8093 Zürich, Switzerland
| | - Cornelia Halin
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zürich , 8093 Zürich, Switzerland
| | - Jean-Christophe Leroux
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zürich , 8093 Zürich, Switzerland
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11
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Islamy Mazrad ZA, Kang EB, Nuraeni N, Lee G, In I, Park SY. Temperature-sensitive carbon dots derived from poly(N-isopropylacrylamide) for fluorescence on–off properties. RSC Adv 2017. [DOI: 10.1039/c6ra25104h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Here, we report novel thermo-responsive fluorescent nanoparticles of carbonized poly(N-isopropylacrylamide) (PNIPAAm) through carbonization. The partial carbonized PNIPAAm (F-PNIPAAm) shows reversible capability based on fluorescence intensity.
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Affiliation(s)
- Zihnil Adha Islamy Mazrad
- Department of IT Convergence
- Korea National University of Transportation
- Chungju 380-702
- Republic of Korea
| | - Eun Bi Kang
- Department of Chemical and Biological Engineering
- Korea National University of Transportation
- Chungju 380-702
- Republic of Korea
| | - Nuraeni Nuraeni
- Department of IT Convergence
- Korea National University of Transportation
- Chungju 380-702
- Republic of Korea
| | - Gibaek Lee
- Department of Chemical and Biological Engineering
- Korea National University of Transportation
- Chungju 380-702
- Republic of Korea
| | - Insik In
- Department of IT Convergence
- Korea National University of Transportation
- Chungju 380-702
- Republic of Korea
- Department of Polymer Science and Engineering
| | - Sung Young Park
- Department of IT Convergence
- Korea National University of Transportation
- Chungju 380-702
- Republic of Korea
- Department of Chemical and Biological Engineering
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12
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Drees C, Raj AN, Kurre R, Busch KB, Haase M, Piehler J. Engineered Upconversion Nanoparticles for Resolving Protein Interactions inside Living Cells. Angew Chem Int Ed Engl 2016; 55:11668-72. [PMID: 27510808 DOI: 10.1002/anie.201603028] [Citation(s) in RCA: 95] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Revised: 06/29/2016] [Indexed: 01/05/2023]
Abstract
Upconversion nanoparticles (UCNPs) convert near-infrared into visible light at much lower excitation densities than those used in classic two-photon absorption microscopy. Here, we engineered <50 nm UCNPs for application as efficient lanthanide resonance energy transfer (LRET) donors inside living cells. By optimizing the dopant concentrations and the core-shell structure for higher excitation densities, we observed enhanced UCNP emission as well as strongly increased sensitized acceptor fluorescence. For the application of these UCNPs in complex biological environments, we developed a biocompatible surface coating functionalized with a nanobody recognizing green fluorescent protein (GFP). Thus, rapid and specific targeting to GFP-tagged fusion proteins in the mitochondrial outer membrane and detection of protein interactions by LRET in living cells was achieved.
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Affiliation(s)
- Christoph Drees
- Abteilung für Biophysik, Fachbereich Biologie/Chemie, Universität Osnabrück, Barbarastrasse 11, 49076, Osnabrück, Germany
| | - Athira Naduviledathu Raj
- Institut für Chemie Neuer Materialien, Fachbereich Biologie/Chemie, Universität Osnabrück, Barbarastrasse 7, 49069, Osnabrück, Germany
| | - Rainer Kurre
- Center for Advanced Light Microscopy, Fachbereich Biologie/Chemie, Universität Osnabrück, Barbarastrasse 11, 49076, Osnabrück, Germany
| | - Karin B Busch
- Fachbereich Biologie, Universität Münster, Schlossplatz 5, 48149, Münster, Germany
| | - Markus Haase
- Institut für Chemie Neuer Materialien, Fachbereich Biologie/Chemie, Universität Osnabrück, Barbarastrasse 7, 49069, Osnabrück, Germany.
| | - Jacob Piehler
- Abteilung für Biophysik, Fachbereich Biologie/Chemie, Universität Osnabrück, Barbarastrasse 11, 49076, Osnabrück, Germany.
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13
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Drees C, Raj AN, Kurre R, Busch KB, Haase M, Piehler J. Maßgeschneiderte Aufwärtskonvertierungsnanopartikel zur Detektion von Proteinwechselwirkungen in lebenden Zellen. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201603028] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Christoph Drees
- Abteilung für Biophysik, Fachbereich Biologie/Chemie; Universität Osnabrück; Barbarastraße 11 49076 Osnabrück Deutschland
| | - Athira Naduviledathu Raj
- Institut für Chemie Neuer Materialien, Fachbereich Biologie/Chemie; Universität Osnabrück; Barbarastraße 7 49069 Osnabrück Deutschland
| | - Rainer Kurre
- Center for Advanced Light Microscopy, Fachbereich Biologie/Chemie; Universität Osnabrück; Barbarastraße 11 49076 Osnabrück Deutschland
| | - Karin B. Busch
- Fachbereich Biologie; Universität Münster; Schlossplatz 5 48149 Münster Deutschland
| | - Markus Haase
- Institut für Chemie Neuer Materialien, Fachbereich Biologie/Chemie; Universität Osnabrück; Barbarastraße 7 49069 Osnabrück Deutschland
| | - Jacob Piehler
- Abteilung für Biophysik, Fachbereich Biologie/Chemie; Universität Osnabrück; Barbarastraße 11 49076 Osnabrück Deutschland
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14
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Abstract
Current directions and emerging possibilities under investigation for the integration of synthetic and semi-synthetic multivalent architectures with biology are discussed. Attention is focussed around multivalent interactions, their fundamental role in biology, and current and potential approaches in emulating them in terms of structure and functionality using synthetic architectures.
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Affiliation(s)
- Eugene Mahon
- Conway Institute for Biomolecular and Biomedical Science, Belfield, Dublin 4, Ireland.
| | - Mihail Barboiu
- Adaptative Supramolecular Nanosystems Group, Institut Européen des Membranes, ENSCM/UMII/UMR-CNRS 5635, Pl. Eugène Bataillon, CC 047, 34095 Montpellier, Cedex 5, France.
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Moraga I, Richter D, Wilmes S, Winkelmann H, Jude K, Thomas C, Suhoski MM, Engleman EG, Piehler J, Garcia KC. Instructive roles for cytokine-receptor binding parameters in determining signaling and functional potency. Sci Signal 2015; 8:ra114. [PMID: 26554818 DOI: 10.1126/scisignal.aab2677] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Cytokines dimerize cell surface receptors to activate signaling and regulate many facets of the immune response. Many cytokines have pleiotropic effects, inducing a spectrum of redundant and distinct effects on different cell types. This pleiotropy has hampered cytokine-based therapies, and the high doses required for treatment often lead to off-target effects, highlighting the need for a more detailed understanding of the parameters controlling cytokine-induced signaling and bioactivities. Using the prototypical cytokine interleukin-13 (IL-13), we explored the interrelationships between receptor binding and a wide range of downstream cellular responses. We applied structure-based engineering to generate IL-13 variants that covered a spectrum of binding strengths for the receptor subunit IL-13Rα1. Engineered IL-13 variants representing a broad range of affinities for the receptor exhibited similar potencies in stimulating the phosphorylation of STAT6 (signal transducer and activator of transcription 6). Delays in the phosphorylation and nuclear translocation of STAT6 were only apparent for those IL-13 variants with markedly reduced affinities for the receptor. From these data, we developed a mechanistic model that quantitatively reproduced the kinetics of STAT6 phosphorylation for the entire spectrum of binding affinities. Receptor endocytosis played a key role in modulating STAT6 activation, whereas the lifetime of receptor-ligand complexes at the plasma membrane determined the potency of the variant for inducing more distal responses. This complex interrelationship between extracellular ligand binding and receptor function provides the foundation for new mechanism-based strategies that determine the optimal cytokine dose to enhance therapeutic efficacy.
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Affiliation(s)
- Ignacio Moraga
- Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94305-5345, USA. Department of Molecular and Cellular Physiology and Department of Structural Biology, Stanford University School of Medicine, Stanford, CA 94305-5345, USA
| | - David Richter
- Department of Biology, University of Osnabrück, 49076 Osnabrück, Germany
| | - Stephan Wilmes
- Department of Biology, University of Osnabrück, 49076 Osnabrück, Germany
| | - Hauke Winkelmann
- Department of Biology, University of Osnabrück, 49076 Osnabrück, Germany
| | - Kevin Jude
- Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94305-5345, USA. Department of Molecular and Cellular Physiology and Department of Structural Biology, Stanford University School of Medicine, Stanford, CA 94305-5345, USA
| | - Christoph Thomas
- Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94305-5345, USA. Department of Molecular and Cellular Physiology and Department of Structural Biology, Stanford University School of Medicine, Stanford, CA 94305-5345, USA
| | - Megan M Suhoski
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305-5345, USA
| | - Edgar G Engleman
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305-5345, USA
| | - Jacob Piehler
- Department of Biology, University of Osnabrück, 49076 Osnabrück, Germany.
| | - K Christopher Garcia
- Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94305-5345, USA. Department of Molecular and Cellular Physiology and Department of Structural Biology, Stanford University School of Medicine, Stanford, CA 94305-5345, USA.
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16
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Etoc F, Vicario C, Lisse D, Siaugue JM, Piehler J, Coppey M, Dahan M. Magnetogenetic control of protein gradients inside living cells with high spatial and temporal resolution. NANO LETTERS 2015; 15:3487-94. [PMID: 25895433 DOI: 10.1021/acs.nanolett.5b00851] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Tools for controlling the spatial organization of proteins are a major prerequisite for deciphering mechanisms governing the dynamic architecture of living cells. Here, we have developed a generic approach for inducing and maintaining protein gradients inside living cells by means of biofunctionalized magnetic nanoparticles (MNPs). For this purpose, we tailored the size and surface properties of MNPs in order to ensure unhindered mobility in the cytosol. These MNPs with a core diameter below 50 nm could be rapidly relocalized in living cells by exploiting biased diffusion at weak magnetic forces in the femto-Newton range. In combination with MNP surface functionalization for specific in situ capturing of target proteins as well as efficient delivery into the cytosplasm, we here present a comprehensive technology for controlling intracellular protein gradients with a temporal resolution of a few tens of seconds.
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Affiliation(s)
- Fred Etoc
- †Laboratoire Physico-Chimie, Institut Curie, CNRS UMR168, Paris-Science Lettres, Université Pierre et Marie Curie-Paris 6, 75005 Paris, France
| | - Chiara Vicario
- †Laboratoire Physico-Chimie, Institut Curie, CNRS UMR168, Paris-Science Lettres, Université Pierre et Marie Curie-Paris 6, 75005 Paris, France
| | - Domenik Lisse
- †Laboratoire Physico-Chimie, Institut Curie, CNRS UMR168, Paris-Science Lettres, Université Pierre et Marie Curie-Paris 6, 75005 Paris, France
- ‡Department of Biology, University of Osnabrück, 49076 Osnabrück, Germany
| | - Jean-Michel Siaugue
- §Sorbonne Universités, UPMC Univ Paris 06, UMR 8234, PHENIX, F-75005 Paris, France
| | - Jacob Piehler
- ‡Department of Biology, University of Osnabrück, 49076 Osnabrück, Germany
| | - Mathieu Coppey
- †Laboratoire Physico-Chimie, Institut Curie, CNRS UMR168, Paris-Science Lettres, Université Pierre et Marie Curie-Paris 6, 75005 Paris, France
| | - Maxime Dahan
- †Laboratoire Physico-Chimie, Institut Curie, CNRS UMR168, Paris-Science Lettres, Université Pierre et Marie Curie-Paris 6, 75005 Paris, France
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17
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Tsou CJ, Hsia CH, Chu JY, Hung Y, Chen YP, Chien FC, Chou KC, Chen P, Mou CY. Local pH tracking in living cells. NANOSCALE 2015; 7:4217-4225. [PMID: 25672786 DOI: 10.1039/c4nr06545j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Continuous and simultaneous 3D single-particle movement and local pH detection in HeLa cells were demonstrated for the first time by combining fluorescent mesoporous silica nanoparticles (FMSNs) and a single-particle tracking (SPT) technique with a precision of ∼10 nm. FMSNs, synthesized by the co-condensation of both pH-sensitive and reference dyes with a silica/surfactant source, allow long-term reliable ratiometric pH measurements with a precision better than 0.3 pH unit because of their excellent brightness and stability. pH variation in the surrounding area of FMSNs during endocytosis was monitored in real-time. Acidification and low mobility of FMSNs were observed at the early endocytic stage, whereas basification and high mobility of FMSNs were observed at the late stage. Our results indicate that it is possible to monitor local pH changes in the environments surrounding nanoparticles during the cellular uptake process of FMSNs, which provides much needed information for designing an efficient drug delivery nanosystem.
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Affiliation(s)
- Chieh-Jui Tsou
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 106.
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18
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Li H, Dou SX, Liu YR, Li W, Xie P, Wang WC, Wang PY. Mapping intracellular diffusion distribution using single quantum dot tracking: compartmentalized diffusion defined by endoplasmic reticulum. J Am Chem Soc 2015; 137:436-44. [PMID: 25535941 DOI: 10.1021/ja511273c] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The crowded intracellular environment influences the diffusion-mediated cellular processes, such as metabolism, signaling, and transport. The hindered diffusion of macromolecules in heterogeneous cytoplasm has been studied over years, but the detailed diffusion distribution and its origin still remain unclear. Here, we introduce a novel method to map rapidly the diffusion distribution in single cells based on single-particle tracking (SPT) of quantum dots (QDs). The diffusion map reveals the heterogeneous intracellular environment and, more importantly, an unreported compartmentalization of QD diffusions in cytoplasm. Simultaneous observations of QD motion and green fluorescent protein-tagged endoplasmic reticulum (ER) dynamics provide direct evidence that the compartmentalization results from micron-scale domains defined by ER tubules, and ER cisternae form perinuclear areas that restrict QDs to enter. The same phenomenon was observed using fluorescein isothiocyanate-dextrans, further confirming the compartmentalized diffusion. These results shed new light on the diffusive movements of macromolecules in the cell, and the mapping of intracellular diffusion distribution may be used to develop strategies for nanoparticle-based drug deliveries and therapeutics.
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Affiliation(s)
- Hui Li
- Key Laboratory of Soft Matter Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China
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19
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Remaut K, Oorschot V, Braeckmans K, Klumperman J, De Smedt SC. Lysosomal capturing of cytoplasmic injected nanoparticles by autophagy: an additional barrier to non viral gene delivery. J Control Release 2014; 195:29-36. [PMID: 25125327 DOI: 10.1016/j.jconrel.2014.08.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Revised: 08/01/2014] [Accepted: 08/02/2014] [Indexed: 11/18/2022]
Abstract
Autophagy or 'self-eating' is a process by which defective organelles and foreign material can be cleared from the cell's cytoplasm and delivered to the lysosomes in which degradation occurs. It remains an open question, however, whether nanoparticles that did not enter the cell through endocytosis can also be captured from the cytoplasm by autophagy. We demonstrate that nanoparticles that are introduced directly in the cytoplasm of the cells by microinjection, can trigger an autophagy response. Moreover, both polystyrene beads and plasmid DNA containing poly-ethylene-imine complexes colocalize with autophagosomes and lysosomes, as was confirmed by electron microscopy. This indicates that cytoplasmic capturing of nanoparticles can occur by an autophagy response. The capturing of nanoparticles from the cytoplasm most likely limits the time frame in which efficient nucleic acid delivery can be obtained. Hence, autophagy forms an additional barrier to non-viral gene delivery, a notion that was not often taken into account before. Furthermore, these findings urge us to reconsider the idea that a single endosomal escape event is sufficient to have the long-lasting presence of nanoparticles in the cytoplasm of the cells.
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Affiliation(s)
- Katrien Remaut
- Lab General Biochemistry & Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
| | - Viola Oorschot
- Dept. of Cell Biology, Center for Molecular Medicine, Universital Medical Center Utrecht, The Netherlands
| | - Kevin Braeckmans
- Lab General Biochemistry & Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
| | - Judith Klumperman
- Dept. of Cell Biology, Center for Molecular Medicine, Universital Medical Center Utrecht, The Netherlands
| | - Stefaan C De Smedt
- Lab General Biochemistry & Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium.
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