1
|
Ohmuro-Matsuyama Y, Matsui H, Kanai M, Furuta T. Glow-type conversion and characterization of a minimal luciferase via mutational analyses. FEBS J 2023; 290:5554-5565. [PMID: 37622174 DOI: 10.1111/febs.16937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/20/2023] [Accepted: 08/22/2023] [Indexed: 08/26/2023]
Abstract
Luciferases are widely used as reporter proteins in various fields. Recently, we developed a minimal bright luciferase, picALuc, via partial deletion of the artificial luciferase (ALuc) derived from copepods luciferases. However, the structures of copepod luciferases in the substrate-bound state remain unknown. Moreover, as suggested by structural modeling, picALuc has a larger active site cavity, unlike that in other copepod luciferases. Here, to explore the bioluminescence mechanism of picALuc and its luminescence properties, we conducted multiple mutational analyses, and identified residues and regions important for catalysis and bioluminescence. Mutations of residues likely involved in catalysis (S33, H34, and D55) markedly reduced bioluminescence, whereas that of residue (E50) (near the substrate in the structural model) enhanced luminescence intensity. Furthermore, deletion mutants (Δ70-Δ78) in the loop region (around I73) exhibited longer luminescence lifetimes (~ 30 min) and were reactivated multiple times upon re-addition of the substrate. Due to the high thermostability of picALuc, one of its representative mutant (Δ74), was able to be reused, that is, luminescence recycling, for day-scale time at room temperature. These findings provide important insights into picALuc bioluminescence mechanism and copepod luciferases and may help with sustained observations in a variety of applications.
Collapse
Affiliation(s)
| | - Hayato Matsui
- Technology Research Laboratory, Shimadzu Corporation, Kyoto, Japan
| | - Masaki Kanai
- Technology Research Laboratory, Shimadzu Corporation, Kyoto, Japan
| | - Tadaomi Furuta
- School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Japan
| |
Collapse
|
2
|
Sun Y, Zhong X, Dennis AM. Minimizing near-infrared autofluorescence in preclinical imaging with diet and wavelength selection. JOURNAL OF BIOMEDICAL OPTICS 2023; 28:094805. [PMID: 37035712 PMCID: PMC10075996 DOI: 10.1117/1.jbo.28.9.094805] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 03/08/2023] [Indexed: 05/18/2023]
Abstract
Significance Preclinical fluorescence imaging with NIR-I (700 to 900 nm) illumination and short-wave infrared or NIR-II (1000 to 1700 nm) emission increases tissue penetration depth and improves resolution through decreased scattering. Background autofluorescence decreases signal-to-background ratios (SBR) in fluorescence imaging; maximizing SBR will further improve the impact of deep tissue imaging. Aim The impact of rodent diet, illumination wavelength, and emission range on the background fluorescence and contrast agent SBR were determined to assist with the experimental design of future imaging studies. Approach Following illumination with 670, 760, or 808 nm, autofluorescence in the NIR-I ( < 975 nm ), NIR-II ( > 1000 nm ), and NIR-II LP ( > 1250 nm ) regions was assessed in mice fed chow or a purified diet using an IR VIVO preclinical imager (Photon, Etc.). Comparison of the SBR of liver-localized indocyanine green in the various imaging conditions indicated when gut autofluorescence was a problematic confounder. Results Mice fed chow exhibit high levels of background autofluorescence in the gastrointestinal tract and, to a lesser extent, skin when illuminated with 670 nm light for NIR-I imaging (700 to 975 nm), interfering with the identification of fluorescently labeled tissue. Background autofluorescence was reduced by more than two orders of magnitude by any of the following changes: (1) purified diet; (2) excitation with 760 or 808 nm illumination; or (3) emission in the NIR-II (1000 to 1600 or 1250 to 1600 nm). Although the SBR was generally sufficient for feature identification except when imaging of chow-fed mice with 670 nm excitation and NIR-I emission, switching to a purified diet, using longer excitation wavelengths, or using longer emission wavelengths improved SBR significantly. Conclusions Systematic comparison of imaging conditions and diet highlights the reduction in autofluorescence and increase in SBR enabled by intentional choices in the experimental parameters including diet, excitation wavelength, and emission wavelength range.
Collapse
Affiliation(s)
- Yidan Sun
- Northeastern University, Department of Chemical Engineering, Boston, Massachusetts, United States
- Boston University, Department of Biomedical Engineering, Boston, Massachusetts, United States
| | - Xingjian Zhong
- Boston University, Department of Biomedical Engineering, Boston, Massachusetts, United States
| | - Allison M. Dennis
- Northeastern University, Department of Chemical Engineering, Boston, Massachusetts, United States
- Boston University, Department of Biomedical Engineering, Boston, Massachusetts, United States
- Boston University, Department of Materials Science and Engineering, Boston, Massachusetts, United States
| |
Collapse
|
3
|
Renner B, Poppelaars F, Laskowski J, Serkova NJ, Kulik L, Holers VM, Thurman JM. Noninvasive Detection of iC3b/C3d Deposits in the Kidney Using a Novel Bioluminescent Imaging Probe. J Am Soc Nephrol 2023; 34:1151-1154. [PMID: 36995143 PMCID: PMC10356150 DOI: 10.1681/asn.0000000000000129] [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: 11/03/2022] [Accepted: 03/07/2023] [Indexed: 03/31/2023] Open
Abstract
SIGNIFICANCE STATEMENT Histologic quantification of complement C3 deposits in kidney biopsies provides prognostic information in patients with glomerulonephritis. Unfortunately, kidney biopsies are invasive procedures that cannot be performed regularly and only provide a snapshot of a small portion of one kidney at the time of sampling. We have developed a method to noninvasively detect specific C3 fragment deposition throughout both kidneys, using a monoclonal antibody targeting tissue-bound iC3b/C3d linked to a bioluminescent resonance energy transfer construct that emits near-infrared light. In a mouse model of glomerulonephritis, the probe detected iC3b/C3d in kidneys of live mice by bioluminescent imaging. This demonstrates that noninvasive imaging with an anti-iC3b/C3d probe can be used to monitor inflammation in the kidneys.
Collapse
Affiliation(s)
- Brandon Renner
- Department of Medicine, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, Colorado
| | - Felix Poppelaars
- Department of Medicine, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, Colorado
| | - Jennifer Laskowski
- Department of Medicine, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, Colorado
| | - Natalie J. Serkova
- Department of Radiology, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Liudmila Kulik
- Department of Medicine, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, Colorado
| | - V. Michael Holers
- Department of Medicine, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, Colorado
| | - Joshua M. Thurman
- Department of Medicine, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, Colorado
| |
Collapse
|
4
|
Smith JT, Sinsuebphon N, Rudkouskaya A, Michalet X, Intes X, Barroso M. In vivo quantitative FRET small animal imaging: Intensity versus lifetime-based FRET. BIOPHYSICAL REPORTS 2023; 3:100110. [PMID: 37251213 PMCID: PMC10209493 DOI: 10.1016/j.bpr.2023.100110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 04/27/2023] [Indexed: 05/31/2023]
Abstract
Förster resonance energy transfer (FRET) microscopy is used in numerous biophysical and biomedical applications to monitor inter- and intramolecular interactions and conformational changes in the 2-10 nm range. FRET is currently being extended to in vivo optical imaging, its main application being in quantifying drug-target engagement or drug release in animal models of cancer using organic dye or nanoparticle-labeled probes. Herein, we compared FRET quantification using intensity-based FRET (sensitized emission FRET analysis with the three-cube approach using an IVIS imager) and macroscopic fluorescence lifetime (MFLI) FRET using a custom system using a time-gated-intensified charge-coupled device, for small animal optical in vivo imaging. The analytical expressions and experimental protocols required to quantify the product fDE of the FRET efficiency E and the fraction of donor molecules involved in FRET, fD, are described in detail for both methodologies. Dynamic in vivo FRET quantification of transferrin receptor-transferrin binding was acquired in live intact nude mice upon intravenous injection of a near-infrared-labeled transferrin FRET pair and benchmarked against in vitro FRET using hybridized oligonucleotides. Even though both in vivo imaging techniques provided similar dynamic trends for receptor-ligand engagement, we demonstrate that MFLI-FRET has significant advantages. Whereas the sensitized emission FRET approach using the IVIS imager required nine measurements (six of which are used for calibration) acquired from three mice, MFLI-FRET needed only one measurement collected from a single mouse, although a control mouse might be needed in a more general situation. Based on our study, MFLI therefore represents the method of choice for longitudinal preclinical FRET studies such as that of targeted drug delivery in intact, live mice.
Collapse
Affiliation(s)
- Jason T. Smith
- Center for Modeling, Simulation and Imaging in Medicine (CeMSIM), Rensselaer Polytechnic Institute, Troy, New York
| | - Nattawut Sinsuebphon
- Center for Modeling, Simulation and Imaging in Medicine (CeMSIM), Rensselaer Polytechnic Institute, Troy, New York
| | - Alena Rudkouskaya
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York
| | - Xavier Michalet
- Department of Chemistry & Biochemistry, University of California at Los Angeles, Los Angeles, California
| | - Xavier Intes
- Center for Modeling, Simulation and Imaging in Medicine (CeMSIM), Rensselaer Polytechnic Institute, Troy, New York
| | - Margarida Barroso
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York
| |
Collapse
|
5
|
Allchin ER, Rosch JC, Stoneman AD, Kim H, Lippmann ES. Generalized Strategy for Engineering Mammalian Cell-Compatible RNA-Based Biosensors from Random Sequence Libraries. ACS Sens 2023; 8:2079-2086. [PMID: 37155734 DOI: 10.1021/acssensors.3c00388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Fluorescent RNA-based biosensors are useful tools for real-time detection of molecules in living cells. These biosensors typically consist of a chromophore-binding aptamer and a target-binding aptamer, whereby the chromophore-binding aptamer is destabilized until a target is captured, which causes a conformational change to permit chromophore binding and an increase in fluorescence. The target-binding region is typically fabricated using known riboswitch motifs, which are already known to have target specificity and undergo structural changes upon binding. However, known riboswitches only exist for a limited number of molecules, significantly constraining biosensor design. To overcome this challenge, we designed a framework for producing mammalian cell-compatible biosensors using aptamers selected from a large random library by Capture-SELEX. As a proof-of-concept, we generated and characterized a fluorescent RNA biosensor against L-dopa, the precursor of several neurotransmitters. Overall, we suggest that this approach will have utility for generating RNA biosensors that can reliably detect custom targets in mammalian cells.
Collapse
Affiliation(s)
- Everett R Allchin
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37212, United States
| | - Jonah C Rosch
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37212, United States
| | - Alexander D Stoneman
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37212, United States
| | - Hyosung Kim
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37212, United States
| | - Ethan S Lippmann
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37212, United States
| |
Collapse
|
6
|
Smith JT, Sinsuebphon N, Rudkouskaya A, Michalet X, Intes X, Barroso M. in vivo quantitative FRET small animal imaging: intensity versus lifetime-based FRET. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.24.525411. [PMID: 36747671 PMCID: PMC9900789 DOI: 10.1101/2023.01.24.525411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Förster Resonance Energy Transfer (FRET) microscopy is used in numerous biophysical and biomedical applications to monitor inter- and intramolecular interactions and conformational changes in the 2-10 nm range. FRET is currently being extended to in vivo optical imaging, its main application being in quantifying drug-target engagement or drug release in animal models of cancer using organic dye or nanoparticle-labeled probes. Herein, we compared FRET quantification using intensity-based FRET (sensitized emission FRET analysis using 3-cube IVIS imager) and macroscopic fluorescence lifetime (MFLI) FRET using a time-resolved ICCD system in small animal optical in vivo imaging. The analytical expressions and experimental protocols required to quantify FRET efficiency E and the fraction of donor molecules actually involved in FRET, f D , are described in detail for both methodologies. Dynamic in vivo FRET quantification of transferrin receptor-transferrin binding was acquired in live intact nude mice upon intravenous injection of near infrared-labeled transferrin FRET pair and benchmarked against in vitro FRET using hybridized oligonucleotides. Even though both in vivo imaging techniques provided similar FRET quantification trends of receptor-ligand engagement, we demonstrate that MFLI FRET has significant advantages. Whereas the sensitized emission FRET approach using IVIS imager required 9 measurements (8 of which are used for calibration) acquired from three mice, MFLI FRET needed only one measurement collected from a single mouse. Hence, MFLI represents the method of choice for FRET measurements in intact, live mice to assess targeted drug delivery in longitudinal preclinical studies, as well as for many other in vivo biomedical applications. WHY IT MATTERS FRET measurements in live animals open a unique window into drug-target interaction monitoring, by sensing the close proximity between a donor and acceptor-labeled molecular probes. To perform these measurements, a 3-cube fluorescent intensity measurement strategy can be adopted, as is common for in vitro FRET microscopy studies. However, it is challenging to translate this already cumbersome approach to in vivo small animal imaging. Here, we compare this standard approach, for which we provide a revised analytical framework, to a conceptually much simpler and more powerful one based on fluorescence lifetime measurements. Our results demonstrate that the technical challenge of in vivo fluorescence lifetime macroscopic imaging is well worth surmounting to obtain quantitative, whole-animal information regarding molecular drug-target engagement.
Collapse
|
7
|
Karimi E, Nikkhah M, Hosseinkhani S. Label-Free and Bioluminescence-Based Nano-Biosensor for ATP Detection. BIOSENSORS 2022; 12:918. [PMID: 36354427 PMCID: PMC9687858 DOI: 10.3390/bios12110918] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 10/11/2022] [Accepted: 10/12/2022] [Indexed: 06/16/2023]
Abstract
A bioluminescence-based assay for ATP can measure cell viability. Higher ATP concentration indicates a higher number of living cells. Thus, it is necessary to design an ATP sensor that is low-cost and easy to use. Gold nanoparticles provide excellent biocompatibility for enzyme immobilization. We investigated the effect of luciferase proximity with citrate-coated gold, silver, and gold-silver core-shell nanoparticles, gold nanorods, and BSA-Au nanoclusters. The effect of metal nanoparticles on the activity of luciferases was recorded by the luminescence assay, which was 3-5 times higher than free enzyme. The results showed that the signal stability in presence of nanoparticles improved and was reliable up to 6 h for analytes measurements. It has been suggested that energy is mutually transferred from luciferase bioluminescence spectra to metal nanoparticle surface plasmons. In addition, we herein report the 27-base DNA aptamer for adenosine-5'-triphosphate (ATP) as a suitable probe for the ATP biosensor based on firefly luciferase activity and AuNPs. Due to ATP application in the firefly luciferase reaction, the increase in luciferase activity and improved detection limits may indicate more stability or accessibility of ATP in the presence of nanoparticles. The bioluminescence intensity increased with the ATP concentration up to 600 µM with a detection limit of 5 µM for ATP.
Collapse
|
8
|
Olson KM, Campbell A, Alt A, Traynor JR. Finding the Perfect Fit: Conformational Biosensors to Determine the Efficacy of GPCR Ligands. ACS Pharmacol Transl Sci 2022; 5:694-709. [PMID: 36110374 PMCID: PMC9469492 DOI: 10.1021/acsptsci.1c00256] [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] [Indexed: 11/28/2022]
Abstract
G protein-coupled receptors (GPCRs) are highly druggable targets that adopt numerous conformations. A ligand's ability to stabilize specific conformation(s) of its cognate receptor determines its efficacy or ability to produce a biological response. Identifying ligands that produce different receptor conformations and potentially discrete pharmacological effects (e.g., biased agonists, partial agonists, antagonists, allosteric modulators) is a major goal in drug discovery and necessary to develop drugs with better effectiveness and fewer side effects. Fortunately, direct measurements of ligand efficacy, via receptor conformational changes are possible with the recent development of conformational biosensors. In this review, we discuss classical efficacy models, including the two-state model, the ternary-complex model, and multistate models. We describe how nanobody-, transducer-, and receptor-based conformational biosensors detect and/or stabilize specific GPCR conformations to identify ligands with different levels of efficacy. In particular, conformational biosensors provide the potential to identify and/or characterize therapeutically desirable but often difficult to measure conformations of receptors faster and better than current methods. For drug discovery/development, several recent proof-of-principle studies have optimized conformational biosensors for high-throughput screening (HTS) platforms. However, their widespread use is limited by the fact that few sensors are reliably capable of detecting low-frequency conformations and technically demanding assay conditions. Nonetheless, conformational biosensors do help identify desirable ligands such as allosteric modulators, biased ligands, or partial agonists in a single assay, representing a distinct advantage over classical methods.
Collapse
Affiliation(s)
- Keith M. Olson
- Department
of Pharmacology and Edward F Domino Research Center, University of Michigan, Ann Arbor, Michigan 48109, United States
- Life
Sciences Institute, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Andra Campbell
- Department
of Pharmacology and Edward F Domino Research Center, University of Michigan, Ann Arbor, Michigan 48109, United States
- Life
Sciences Institute, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Andrew Alt
- Department
of Pharmacology and Edward F Domino Research Center, University of Michigan, Ann Arbor, Michigan 48109, United States
- Life
Sciences Institute, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - John R. Traynor
- Department
of Pharmacology and Edward F Domino Research Center, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department
of Medicinal Chemistry, College of Pharmacy, University of Michigan, 428 Church Street, Ann Arbor, Michigan 48109, United
States
| |
Collapse
|
9
|
Ohmuro-Matsuyama Y, Furuta T, Matsui H, Kanai M, Ueda H. Miniaturization of Bright Light-Emitting Luciferase ALuc: picALuc. ACS Chem Biol 2022; 17:864-872. [PMID: 35293729 DOI: 10.1021/acschembio.1c00897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Luciferases are widely used as sensitive reporters in various fields ranging from basic biology to medical diagnosis, public health, and food inspection. Scientists have isolated novel luciferases from bioluminescent organisms and concentrated on improving their brightness and thermostability. Recently, small bright luciferases such as artificial luciferase (ALuc) (21 kDa), NanoLuc (19 kDa), GLuc (18 kDa), and TurboLuc (16 kDa) have been reported. However, smaller, brighter, and more stable luciferases are desired for further applications. Here, we constructed the smallest and bright mutant of ALuc, named "picALuc" (13 kDa). picALuc retained the luminescence activity of the full-length ALuc; moreover, its brightness and thermostability were at the same levels as NanoLuc. Furthermore, we showed the advantage of picALuc for the bioluminescence resonance energy transfer-based assay due to its smallness. Our development has opened the door for wider and more practical applications of luciferases.
Collapse
Affiliation(s)
- Yuki Ohmuro-Matsuyama
- Technology Research Laboratory, Shimadzu Corporation, Kyoto 619-0237, Japan
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama 226-8503, Japan
| | - Tadaomi Furuta
- School of Life Science and Technology, Tokyo Institute of Technology, Yokohama 226-8501, Japan
| | - Hayato Matsui
- Technology Research Laboratory, Shimadzu Corporation, Kyoto 619-0237, Japan
| | - Masaki Kanai
- Technology Research Laboratory, Shimadzu Corporation, Kyoto 619-0237, Japan
| | - Hiroshi Ueda
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama 226-8503, Japan
| |
Collapse
|
10
|
Ahn S, Yang H, Son S, Lee HS, Park D, Yim H, Choi HJ, Swoboda P, Lee J. The C. elegans regulatory factor X (RFX) DAF-19M module: A shift from general ciliogenesis to cell-specific ciliary and behavioral specialization. Cell Rep 2022; 39:110661. [PMID: 35417689 DOI: 10.1016/j.celrep.2022.110661] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 01/14/2022] [Accepted: 03/18/2022] [Indexed: 12/28/2022] Open
Abstract
Cilia are important for the interaction with environments and the proper function of tissues. While the basic structure of cilia is well conserved, ciliated cells have various functions. To understand the distinctive identities of ciliated cells, the identification of cell-specific proteins and its regulation is essential. Here, we report the mechanism that confers a specific identity on IL2 neurons in Caenorhabditis elegans, neurons important for the dauer larva-specific nictation behavior. We show that DAF-19M, an isoform of the sole C. elegans RFX transcription factor DAF-19, heads a regulatory subroutine, regulating target genes through an X-box motif variant under the control of terminal selector proteins UNC-86 and CFI-1 in IL2 neurons. Considering the conservation of DAF-19M module in IL2 neurons for nictation and in male-specific neurons for mating behavior, we propose the existence of an evolutionarily adaptable, hard-wired genetic module for distinct behaviors that share the feature "recognizing the environment."
Collapse
Affiliation(s)
- Soungyub Ahn
- Department of Biological Sciences, Seoul National University, Seoul, Republic of Korea; Institute of Molecular Biology and Genetics, Seoul National University, Seoul, Republic of Korea
| | - Heeseung Yang
- Department of Biological Sciences, Seoul National University, Seoul, Republic of Korea; Institute of Molecular Biology and Genetics, Seoul National University, Seoul, Republic of Korea
| | - Sangwon Son
- Department of Biological Sciences, Seoul National University, Seoul, Republic of Korea; Institute of Molecular Biology and Genetics, Seoul National University, Seoul, Republic of Korea
| | - Hyun Sik Lee
- Department of Biological Sciences, Seoul National University, Seoul, Republic of Korea
| | - Dongjun Park
- Department of Biological Sciences, Seoul National University, Seoul, Republic of Korea; Institute of Molecular Biology and Genetics, Seoul National University, Seoul, Republic of Korea
| | - Hyunsoo Yim
- Department of Biological Sciences, Seoul National University, Seoul, Republic of Korea; Institute of Molecular Biology and Genetics, Seoul National University, Seoul, Republic of Korea
| | - Hee-Jung Choi
- Department of Biological Sciences, Seoul National University, Seoul, Republic of Korea
| | - Peter Swoboda
- Department of Biosciences and Nutrition, Karolinska Institute, Huddinge, Sweden.
| | - Junho Lee
- Department of Biological Sciences, Seoul National University, Seoul, Republic of Korea; Institute of Molecular Biology and Genetics, Seoul National University, Seoul, Republic of Korea.
| |
Collapse
|
11
|
Hua Y, Ma J, Li D, Wang R. DNA-Based Biosensors for the Biochemical Analysis: A Review. BIOSENSORS 2022; 12:bios12030183. [PMID: 35323453 PMCID: PMC8945906 DOI: 10.3390/bios12030183] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 03/09/2022] [Accepted: 03/16/2022] [Indexed: 05/21/2023]
Abstract
In recent years, DNA-based biosensors have shown great potential as the candidate of the next generation biomedical detection device due to their robust chemical properties and customizable biosensing functions. Compared with the conventional biosensors, the DNA-based biosensors have advantages such as wider detection targets, more durable lifetime, and lower production cost. Additionally, the ingenious DNA structures can control the signal conduction near the biosensor surface, which could significantly improve the performance of biosensors. In order to show a big picture of the DNA biosensor's advantages, this article reviews the background knowledge and recent advances of DNA-based biosensors, including the functional DNA strands-based biosensors, DNA hybridization-based biosensors, and DNA templated biosensors. Then, the challenges and future directions of DNA-based biosensors are discussed and proposed.
Collapse
|
12
|
Copp SM, Hamblin RL, Swingle K, Rai D, Urban VS, Ivanov SA, Montaño GA. Complex pH-Dependent Interactions between Weak Polyelectrolyte Block Copolymer Micelles and Molecular Fluorophores. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:2038-2045. [PMID: 35119286 DOI: 10.1021/acs.langmuir.1c02889] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Amphiphilic block copolymers with weak polyelectrolyte blocks can assemble stimulus-responsive nanostructures and interfaces. Applications of these materials in drug delivery, biomimetics, and sensing largely rely on the well-understood swelling of polyelectrolyte chains upon deprotonation, often induced by changes in pH or ionic strength. This deprotonation can also tune interfacial interactions between the polyelectrolyte blocks and surrounding solution, an effect which is less studied than morphological swelling of polyelectrolytes but can be just as critical for intended function. Here, we investigate whether the pH-driven morphological response of polyelectrolyte-bearing nanostructures also affects the interactions of these nanostructures with molecules in solution, using micelles of a short-chain polybutadiene-block-poly(acrylic acid) (pBd-pAA) as a model system. We introduce a Förster resonance energy transfer (FRET) approach to probe interactions between micelles and fluorescent molecular solutes as a function of solution pH. As expected, the pAA corona of these pBd-pAA micelles increases in thickness monotonically as a function of pH. However, FRET efficiency, which provides a metric of the spatial proximity of fluorescently labeled micelles and freely diffusing fluorophores, exhibits complex nonmonotonic behavior as a function of pH, indicating that the average separation of micelles and acceptor fluorophores is not strictly correlated with micelle swelling. Dialysis experiments quantify the affinity of fluorophores for micelles as a function of pH, confirming that changes in FRET are driven almost entirely by the pH-dependent affinity of the pAA block for the investigated molecular fluorophores, not simply by a shape change of the pAA corona. This study provides key insights into the interfacial interactions between weak-polyelectrolyte-bearing nanostructures and molecular solutes, of importance for the development of their stimulus-responsive applications.
Collapse
Affiliation(s)
- Stacy M Copp
- Department of Materials Science and Engineering, University of California, Irvine, Irvine, California 92697-2585, United States
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, United States
- Department of Chemical and Biomolecular Engineering, University of California, Irvine, Irvine, California 92697-2580, United States
| | - Ryan L Hamblin
- Center for Integrated Nanotechnologies, Los Alamos National Laboratories, Los Alamos, New Mexico 87545, United States
| | - Kirstie Swingle
- Center for Integrated Nanotechnologies, Los Alamos National Laboratories, Los Alamos, New Mexico 87545, United States
| | - Durgesh Rai
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Volker S Urban
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Sergei A Ivanov
- Center for Integrated Nanotechnologies, Los Alamos National Laboratories, Los Alamos, New Mexico 87545, United States
| | - Gabriel A Montaño
- Department of Applied Physics and Materials Science, Northern Arizona University, Flagstaff, Arizona 86011, United States
- Center for Materials Interfaces in Research and Applications, Northern Arizona University, Flagstaff, Arizona 86011, United States
| |
Collapse
|
13
|
Lee SH, Hong KY, Seo H, Lee HS, Park Y. Mechanistic insight into human androgen receptor-mediated endocrine-disrupting potentials by a stable bioluminescence resonance energy transfer-based dimerization assay. Chem Biol Interact 2021; 349:109655. [PMID: 34520754 DOI: 10.1016/j.cbi.2021.109655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 08/05/2021] [Accepted: 09/09/2021] [Indexed: 10/20/2022]
Abstract
To develop a novel cell-based assay to evaluate the androgenic endocrine-disrupting properties of chemical substances, we established a method to detect ligand-mediated androgen receptor (AR) dimerization in stably transfected human cell lines using a bioluminescence resonance energy transfer (BRET) system. Using stably transfected human embryonic kidney (HEK-293) cells, the BRET-based AR dimerization assay was optimized as a novel test method and was validated using test chemicals recommended by the Interagency Coordinating Committee on the Validation of Alternative Methods (ICCVAM). The BRET-based AR dimerization assay showed high accuracy, sensitivity, and specificity for the detection of androgenic endocrine-disrupting chemicals (EDCs), and the assay protocol is adequate for practical use. This dimerization assay is based on ligand-mediated hormone receptor dimerization and can provide accurate information about androgenic endocrine-disrupting properties at the cellular level, complementing conventional binding and transactivation assays.
Collapse
Affiliation(s)
- Seok-Hee Lee
- Department of Food Science and Biotechnology, Dongguk University, Goyang, 10326, Republic of Korea
| | - Kyung Youn Hong
- Department of Food Science and Biotechnology, Dongguk University, Goyang, 10326, Republic of Korea
| | - Hyeyeong Seo
- Department of Integrated Biomedical and Life Science, Korea University, Seoul, 02841, Republic of Korea
| | - Hee-Seok Lee
- Department of Food Science and Technology, Chung-Ang University, Anseong, 17546, Republic of Korea.
| | - Yooheon Park
- Department of Food Science and Biotechnology, Dongguk University, Goyang, 10326, Republic of Korea.
| |
Collapse
|
14
|
Rationally designed drug delivery systems for the local treatment of resected glioblastoma. Adv Drug Deliv Rev 2021; 177:113951. [PMID: 34461201 DOI: 10.1016/j.addr.2021.113951] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 07/26/2021] [Accepted: 08/24/2021] [Indexed: 02/08/2023]
Abstract
Glioblastoma (GBM) is a particularly aggressive brain cancer associated with high recurrence and poor prognosis. The standard of care, surgical resection followed by concomitant radio- and chemotherapy, leads to low survival rates. The local delivery of active agents within the tumor resection cavity has emerged as an attractive means to initiate oncological treatment immediately post-surgery. This complementary approach bypasses the blood-brain barrier, increases the local concentration at the tumor site while reducing or avoiding systemic side effects. This review will provide a global overview on the local treatment for GBM with an emphasis on the lessons learned from past clinical trials. The main parameters to be considered to rationally design fit-of-purpose biomaterials and develop drug delivery systems for local administration in the GBM resection cavity to prevent the tumor recurrence will be described. The intracavitary local treatment of GBM should i) use materials that facilitate translation to the clinic; ii) be characterized by easy GMP effective scaling up and easy-handling application by the neurosurgeons; iii) be adaptable to fill the tumor-resected niche, mold to the resection cavity or adhere to the exposed brain parenchyma; iv) be biocompatible and possess mechanical properties compatible with the brain; v) deliver a therapeutic dose of rationally-designed or repurposed drug compound(s) into the GBM infiltrative margin. Proof of concept with high translational potential will be provided. Finally, future perspectives to facilitate the clinical translation of the local perisurgical treatment of GBM will be discussed.
Collapse
|
15
|
Toufanian R, Zhong X, Kays JC, Saeboe AM, Dennis AM. Correlating ZnSe Quantum Dot Absorption with Particle Size and Concentration. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2021; 33:7527-7536. [PMID: 35221489 PMCID: PMC8872037 DOI: 10.1021/acs.chemmater.1c02501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The focus on heavy metal-free semiconductor nanocrystals has increased interest in ZnSe semiconductor quantum dots (QDs) over the past decade. Reliable and consistent incorporation of ZnSe cores into core/shell heterostructures or devices requires empirical fit equations correlating the lowest-energy electron transition (1S peak) to their size and molar extinction coefficients (ε). While these equations are known and heavily used for CdSe, CdTe, CdS, PbS, etc., they are not well established for ZnSe and are nonexistent for ZnSe QDs with diameters <3.5 nm. In this study, a series of ZnSe QDs with diameters ranging from 2 to 6 nm were characterized by small-angle X-ray scattering (SAXS), transmission electron microscopy (TEM), UV-vis spectroscopy, and microwave plasma atomic emission spectroscopy (MP-AES). SAXS-based size analysis enabled the practical inclusion of small particles in the evaluation, and elemental analysis with MP-AES elucidates a nonstoichiometric Zn:Se ratio consistent with zinc-terminated spherical ZnSe QDs. Using these combined results, empirical fit equations correlating QD size with its lowest-energy electron transition (i.e., 1S peak position), Zn:Se ratio, and molar extinction coefficients for 1S peak, 1S integral, and high-energy wavelengths are reported. Finally, the equations are used to track the evolution of a ZnSe core reaction. These results will enable the consistent and reliable use of ZnSe core particles in complex heterostructures and devices.
Collapse
Affiliation(s)
- Reyhaneh Toufanian
- Division of Materials Science and Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Xingjian Zhong
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Joshua C Kays
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Alexander M Saeboe
- Division of Materials Science and Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Allison M Dennis
- Division of Materials Science and, Engineering, Boston University, Boston, Massachusetts 02215, United States; Department of Biomedical Engineering, Boston, University, Boston, Massachusetts 02215, United States
| |
Collapse
|
16
|
Recent advances in FRET-Based biosensors for biomedical applications. Anal Biochem 2021; 630:114323. [PMID: 34339665 DOI: 10.1016/j.ab.2021.114323] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 07/21/2021] [Accepted: 07/29/2021] [Indexed: 01/12/2023]
Abstract
Fluorescence resonance energy transfer (FRET)-based biosensors are effective analytical tools extensively used in fields of biomedicine, pharmacology, toxicology, and food sciences. Ratiometric imaging of substantial cellular processes, molecular components, and biological interactions is widely performed by these biosensors. A variety of FRET-based biosensors have provided comprehensive insights into underlying mechanisms of pathological conditions in live cells, tissues, and organisms. Moreover, integration of FRET-based biosensors with the current bioanalytical techniques allows for accurate, rapid, and sensitive diagnosis and proposes the advanced strategies for treatment. Precise analysis of ligand-receptor interactions by FRET-based biosensors has presented a basis for determination of novel therapeutic agents. Therefore, this study was designed to review the recent developments in FRET-based biosensors and their biomedical applications. In addition, characteristics, challenges, and outlooks of these biosensors were discussed.
Collapse
|
17
|
Toufanian R, Chern M, Kong VH, Dennis AM. Engineering Brightness Matched Indium Phosphide Quantum Dots. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2021; 33:1964-1975. [PMID: 34219920 PMCID: PMC8243842 DOI: 10.1021/acs.chemmater.0c03181] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The size-dependent optoelectronic properties of semiconductor nanocrystals quantum dots (QDs) are hugely beneficial for color tunability but induce an inherent relative PL brightness mismatch in QDs emitting different colors, as larger emitters absorb more incident photons than smaller particles. Here, we examine the effect of core composition, shell composition, and shell thickness on optical properties including high energy absorption, quantum yield (QY), and the relative brightness of InP/ZnS and InP/ZnSe core/shell and InP/ZnSe/ZnS core/shell/shell QDs at different excitation wavelengths. Our analysis reveals that the presence of an intermediate ZnSe shell changes the wavelength of enhanced absorption onset and leads to highly excitation wavelength dependent QYs. Switching from commercial CdSe/ZnS to InP/ZnS reduces the brightness-mismatch between green and red emitters from 33- to 5-fold. Incorporating a 4-monolayer thick optically absorbing ZnSe shell into the QD heterostructure and heating the QDs in a solution of zinc oleate and trioctylphosphine produces InP/ZnSe/ZnS QDs that are ~10-fold brighter than their InP/ZnS counterparts. In contrast to CdSe/CdS/ZnS core/shell/shell QDs, which only photoluminesce at red wavelengths with thicker CdS shells due to their Quasi-Type II bandstructure, Type I InP/ZnSe/ZnS QDs are uniquely suited to creating a rainbow of visible-emitting, brightness matched emitters. By tailoring the thickness of the intermediate ZnSe shell, heavy metal-free, brightness-matched green and red emitters are produced. This study highlights the ability to overcome the inherent brightness mismatch seen in QDs through concerted materials design of heterostructured core/shell InP-based QDs.
Collapse
Affiliation(s)
- Reyhaneh Toufanian
- Division of Materials Science and Engineering, Boston University, Boston, MA 02215, USA
| | - Margaret Chern
- Division of Materials Science and Engineering, Boston University, Boston, MA 02215, USA
| | - Victoria H Kong
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
| | - Allison M Dennis
- Division of Materials Science and Engineering, Boston University, Boston, MA 02215, USA
| |
Collapse
|
18
|
Camarca A, Varriale A, Capo A, Pennacchio A, Calabrese A, Giannattasio C, Murillo Almuzara C, D’Auria S, Staiano M. Emergent Biosensing Technologies Based on Fluorescence Spectroscopy and Surface Plasmon Resonance. SENSORS (BASEL, SWITZERLAND) 2021; 21:906. [PMID: 33572812 PMCID: PMC7866296 DOI: 10.3390/s21030906] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 01/22/2021] [Accepted: 01/25/2021] [Indexed: 12/23/2022]
Abstract
The purpose of this work is to provide an exhaustive overview of the emerging biosensor technologies for the detection of analytes of interest for food, environment, security, and health. Over the years, biosensors have acquired increasing importance in a wide range of applications due to synergistic studies of various scientific disciplines, determining their great commercial potential and revealing how nanotechnology and biotechnology can be strictly connected. In the present scenario, biosensors have increased their detection limit and sensitivity unthinkable until a few years ago. The most widely used biosensors are optical-based devices such as surface plasmon resonance (SPR)-based biosensors and fluorescence-based biosensors. Here, we will review them by highlighting how the progress in their design and development could impact our daily life.
Collapse
Affiliation(s)
- Alessandra Camarca
- Institute of Food Science, CNR Italy, 83100 Avellino, Italy; (A.C.); (A.V.); (A.C.); (A.P.); (A.C.); (C.G.); (C.M.A.); (M.S.)
| | - Antonio Varriale
- Institute of Food Science, CNR Italy, 83100 Avellino, Italy; (A.C.); (A.V.); (A.C.); (A.P.); (A.C.); (C.G.); (C.M.A.); (M.S.)
- URT-ISA at Department of Biology, University of Naples Federico II, 80126 Napoli, Italy
| | - Alessandro Capo
- Institute of Food Science, CNR Italy, 83100 Avellino, Italy; (A.C.); (A.V.); (A.C.); (A.P.); (A.C.); (C.G.); (C.M.A.); (M.S.)
| | - Angela Pennacchio
- Institute of Food Science, CNR Italy, 83100 Avellino, Italy; (A.C.); (A.V.); (A.C.); (A.P.); (A.C.); (C.G.); (C.M.A.); (M.S.)
| | - Alessia Calabrese
- Institute of Food Science, CNR Italy, 83100 Avellino, Italy; (A.C.); (A.V.); (A.C.); (A.P.); (A.C.); (C.G.); (C.M.A.); (M.S.)
| | - Cristina Giannattasio
- Institute of Food Science, CNR Italy, 83100 Avellino, Italy; (A.C.); (A.V.); (A.C.); (A.P.); (A.C.); (C.G.); (C.M.A.); (M.S.)
| | - Carlos Murillo Almuzara
- Institute of Food Science, CNR Italy, 83100 Avellino, Italy; (A.C.); (A.V.); (A.C.); (A.P.); (A.C.); (C.G.); (C.M.A.); (M.S.)
| | - Sabato D’Auria
- Institute of Food Science, CNR Italy, 83100 Avellino, Italy; (A.C.); (A.V.); (A.C.); (A.P.); (A.C.); (C.G.); (C.M.A.); (M.S.)
| | - Maria Staiano
- Institute of Food Science, CNR Italy, 83100 Avellino, Italy; (A.C.); (A.V.); (A.C.); (A.P.); (A.C.); (C.G.); (C.M.A.); (M.S.)
| |
Collapse
|
19
|
Sureda-Vives M, Sarkisyan KS. Bioluminescence-Driven Optogenetics. Life (Basel) 2020; 10:E318. [PMID: 33260589 PMCID: PMC7760859 DOI: 10.3390/life10120318] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 11/23/2020] [Accepted: 11/25/2020] [Indexed: 02/04/2023] Open
Abstract
Bioluminescence-based technologies are among the most commonly used methods to quantify and visualise physiology at the cellular and organismal levels. However, the potential of bioluminescence beyond reporter technologies remains largely unexplored. Here, we provide an overview of the emerging approaches employing bioluminescence as a biological light source that triggers physiological events and controls cell behaviour and discuss its possible future application in synthetic biology.
Collapse
Affiliation(s)
- Macià Sureda-Vives
- Synthetic Biology Group, MRC London Institute of Medical Sciences, London W12 0NN, UK;
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London W12 0NN, UK
| | - Karen S. Sarkisyan
- Synthetic Biology Group, MRC London Institute of Medical Sciences, London W12 0NN, UK;
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London W12 0NN, UK
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow 117997, Russia
| |
Collapse
|
20
|
Bhuckory S, Wegner KD, Qiu X, Wu YT, Jennings TL, Incamps A, Hildebrandt N. Triplexed CEA-NSE-PSA Immunoassay Using Time-Gated Terbium-to-Quantum Dot FRET. Molecules 2020; 25:molecules25163679. [PMID: 32806745 PMCID: PMC7464126 DOI: 10.3390/molecules25163679] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 08/06/2020] [Accepted: 08/09/2020] [Indexed: 12/12/2022] Open
Abstract
Time-gated Förster resonance energy transfer (TG-FRET) between Tb complexes and luminescent semiconductor quantum dots (QDs) provides highly advantageous photophysical properties for multiplexed biosensing. Multiplexed Tb-to-QD FRET immunoassays possess a large potential for in vitro diagnostics, but their performance is often insufficient for their application under clinical conditions. Here, we developed a homogeneous TG-FRET immunoassay for the quantification of carcinoembryonic antigen (CEA), neuron-specific enolase (NSE), and prostate-specific antigen (PSA) from a single serum sample by multiplexed Tb-to-QD FRET. Tb–IgG antibody donor conjugates were combined with compact QD-F(ab’)2 antibody acceptor conjugates with three different QDs emitting at 605, 650, and 705 nm. Upon antibody–antigen–antibody sandwich complex formation, the QD acceptors were sensitized via FRET from Tb, and the FRET ratios of QD and Tb TG luminescence intensities increased specifically with increasing antigen concentrations. Although limits of detection (LoDs: 3.6 ng/mL CEA, 3.5 ng/mL NSE, and 0.3 ng/mL PSA) for the triplexed assay were slightly higher compared to the single-antigen assays, they were still in a clinically relevant concentration range and could be quantified in 50 µL serum samples on a B·R·A·H·M·S KRYPTOR Compact PLUS clinical immunoassay plate reader. The simultaneous quantification of CEA, NSE, and PSA at different concentrations from the same serum sample demonstrated actual multiplexing Tb-to-QD FRET immunoassays and the potential of this technology for translation into clinical diagnostics.
Collapse
Affiliation(s)
- Shashi Bhuckory
- CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, 91198 Gif-sur-Yvette, France; (S.B.); (X.Q.); (Y.-T.W.)
| | - K. David Wegner
- Federal Institute for Materials Research and Testing (BAM), Division Biophotonics, Richard-Willstaetter-Strasse 11, 12489 Berlin, Germany;
| | - Xue Qiu
- CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, 91198 Gif-sur-Yvette, France; (S.B.); (X.Q.); (Y.-T.W.)
- School of Medicine and Pharmacy, Ocean University of China. 5, Yushan Road, Qingdao 266003, Shandong, China
| | - Yu-Tang Wu
- CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, 91198 Gif-sur-Yvette, France; (S.B.); (X.Q.); (Y.-T.W.)
| | | | - Anne Incamps
- Thermo Fisher Scientific Cezanne SAS, Clinical Diagnostic Division, 30000 Nimes, France;
| | - Niko Hildebrandt
- CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, 91198 Gif-sur-Yvette, France; (S.B.); (X.Q.); (Y.-T.W.)
- Laboratoire COBRA (Chimie Organique, Bioorganique, Réactivité et Analyse), Université de Rouen Normandie, CNRS, INSA, 76821 Mont-Saint-Aignan, France
- Correspondence:
| |
Collapse
|
21
|
Lanchec E, Désilets A, Béliveau F, Fontaine-Carbonneau C, Laniel A, Leduc R, Lavoie C. Matriptase processing of APLP1 ectodomain alters its homodimerization. Sci Rep 2020; 10:10091. [PMID: 32572095 PMCID: PMC7308337 DOI: 10.1038/s41598-020-67005-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 05/29/2020] [Indexed: 11/09/2022] Open
Abstract
The amyloid beta peptide (Aβ) is derived from the amyloid precursor protein (APP) by secretase processing. APP is also cleaved by numerous other proteases, such as the type II transmembrane serine protease matriptase, with consequences on the production of Aβ. Because the APP homolog protein amyloid-like protein 1 (APLP1) shares similarities with APP, we sought to determine if matriptase also plays a role in its processing. Here, we demonstrate that matriptase directly interacts with APLP1 and that APLP1 is cleaved in cellulo by matriptase in its E1 ectodomains at arginine 124. Replacing Arg124 with Ala abolished APLP1 processing by matriptase. Using a bioluminescence resonance energy transfer (BRET) assay we found that matriptase reduces APLP1 homodimeric interactions. This study identifies matriptase as the first protease cleaving APLP1 in its dimerization domain, potentially altering the multiple functions associated with dimer formation.
Collapse
Affiliation(s)
- Erwan Lanchec
- Department of Pharmacology-Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, J1H5N4, Canada
| | - Antoine Désilets
- Department of Pharmacology-Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, J1H5N4, Canada
| | - François Béliveau
- Department of Pharmacology-Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, J1H5N4, Canada
| | - Cloé Fontaine-Carbonneau
- Department of Pharmacology-Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, J1H5N4, Canada
| | - Andréanne Laniel
- Department of Pharmacology-Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, J1H5N4, Canada
| | - Richard Leduc
- Department of Pharmacology-Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, J1H5N4, Canada.
| | - Christine Lavoie
- Department of Pharmacology-Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, J1H5N4, Canada.
| |
Collapse
|
22
|
Gordon E, Schimmel L, Frye M. The Importance of Mechanical Forces for in vitro Endothelial Cell Biology. Front Physiol 2020; 11:684. [PMID: 32625119 PMCID: PMC7314997 DOI: 10.3389/fphys.2020.00684] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 05/26/2020] [Indexed: 12/12/2022] Open
Abstract
Blood and lymphatic vessels are lined by endothelial cells which constantly interact with their luminal and abluminal extracellular environments. These interactions confer physical forces on the endothelium, such as shear stress, stretch and stiffness, to mediate biological responses. These physical forces are often altered during disease, driving abnormal endothelial cell behavior and pathology. Therefore, it is critical that we understand the mechanisms by which endothelial cells respond to physical forces. Traditionally, endothelial cells in culture are grown in the absence of flow on stiff substrates such as plastic or glass. These cells are not subjected to the physical forces that endothelial cells endure in vivo, thus the results of these experiments often do not mimic those observed in the body. The field of vascular biology now realize that an intricate analysis of endothelial signaling mechanisms requires complex in vitro systems to mimic in vivo conditions. Here, we will review what is known about the mechanical forces that guide endothelial cell behavior and then discuss the advancements in endothelial cell culture models designed to better mimic the in vivo vascular microenvironment. A wider application of these technologies will provide more biologically relevant information from cultured cells which will be reproducible to conditions found in the body.
Collapse
Affiliation(s)
- Emma Gordon
- Division of Cell and Developmental Biology, Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Lilian Schimmel
- Division of Cell and Developmental Biology, Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Maike Frye
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| |
Collapse
|
23
|
Stumpf C, Wimmer T, Lorenz B, Stieger K. Creation of different bioluminescence resonance energy transfer based biosensors with high affinity to VEGF. PLoS One 2020; 15:e0230344. [PMID: 32214330 PMCID: PMC7098639 DOI: 10.1371/journal.pone.0230344] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 02/26/2020] [Indexed: 12/27/2022] Open
Abstract
In age-related macular degeneration (AMD) or diabetic retinopathy (DR), hypoxia and inflammatory processes lead to an upregulation of the vascular endothelial growth factor (VEGF) expression and thereby to pathological neovascularisation with incorrectly formed vessels prone to damage, thus increasing the vascular permeability and the risk of bleeding and oedema in the retina. State of the art treatment is the repeated intraocular injection of anti-VEGF molecules. For developing improved individualized treatment approaches, a minimally invasive, repeatable method for in vivo quantification of VEGF in the eye is necessary. Therefore, we designed single molecule eBRET2 VEGF biosensors by directly fusing a Renilla luciferase mutant (Rluc8) N-terminal and a green fluorescent protein (GFP2) C-terminal to a VEGF binding domain. In total, 10 different VEGF biosensors (Re01- Re10) were generated based on either single domains or full length of VEGF receptor 1 or 2 extracellular regions as VEGF binding domains. Full length expression of the biosensors in HEK293-T cells was verified via Western Blot employing an anti-Rluc8-IgG. Expression of alternative splice variants was eliminated through the deletion of the donor splice site by introduction of a silent point mutation. In all ten biosensors the energy transfer from the Rluc8 to the GFP2 occurs and generates a measurable eBRET2 ratio. Four biosensors show a relevant change of the BRET ratio (ΔBR) after VEGF binding. Furthermore, each biosensor shows a unique detection range for VEGF quantification and especially Re06 and Re07 have a high sensitivity in the range of in vivo VEGF concentrations in the eye, previously measured by invasive methods. In conclusion, we generated several eBRET2 biosensors that are suitable for VEGF quantification in vitro and could identify two eBRET2 biosensors, which may be suitable for non-invasive in vivo VEGF quantification with an implantable device.
Collapse
Affiliation(s)
- Constanze Stumpf
- Department of Ophthalmology, Justus-Liebig-University Giessen, Giessen, Germany
| | - Tobias Wimmer
- Department of Ophthalmology, Justus-Liebig-University Giessen, Giessen, Germany
- * E-mail:
| | - Birgit Lorenz
- Department of Ophthalmology, Justus-Liebig-University Giessen, Giessen, Germany
| | - Knut Stieger
- Department of Ophthalmology, Justus-Liebig-University Giessen, Giessen, Germany
| |
Collapse
|
24
|
Sensing Senses: Optical Biosensors to Study Gustation. SENSORS 2020; 20:s20071811. [PMID: 32218129 PMCID: PMC7180777 DOI: 10.3390/s20071811] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 03/19/2020] [Accepted: 03/21/2020] [Indexed: 12/11/2022]
Abstract
The five basic taste modalities, sweet, bitter, umami, salty and sour induce changes of Ca2+ levels, pH and/or membrane potential in taste cells of the tongue and/or in neurons that convey and decode gustatory signals to the brain. Optical biosensors, which can be either synthetic dyes or genetically encoded proteins whose fluorescence spectra depend on levels of Ca2+, pH or membrane potential, have been used in primary cells/tissues or in recombinant systems to study taste-related intra- and intercellular signaling mechanisms or to discover new ligands. Taste-evoked responses were measured by microscopy achieving high spatial and temporal resolution, while plate readers were employed for higher throughput screening. Here, these approaches making use of fluorescent optical biosensors to investigate specific taste-related questions or to screen new agonists/antagonists for the different taste modalities were reviewed systematically. Furthermore, in the context of recent developments in genetically encoded sensors, 3D cultures and imaging technologies, we propose new feasible approaches for studying taste physiology and for compound screening.
Collapse
|
25
|
Pho QH, Losic D, Ostrikov K(K, Tran NN, Hessel V. Perspectives on plasma-assisted synthesis of N-doped nanoparticles as nanopesticides for pest control in crops. REACT CHEM ENG 2020. [DOI: 10.1039/d0re00069h] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Green plasma-based technology production of N-doped NPs for a new agri-tech revolution in pest control.
Collapse
Affiliation(s)
- Quoc Hue Pho
- School of Chemical Engineering and Advanced Materials
- The University of Adelaide
- Adelaide
- Australia
| | - Dusan Losic
- School of Chemical Engineering and Advanced Materials
- The University of Adelaide
- Adelaide
- Australia
- The ARC Graphene Research Hub
| | - Kostya (Ken) Ostrikov
- School of Chemistry, Physics, and Mechanical Engineering
- Queensland University of Technology
- Brisbane
- Australia
| | - Nam Nghiep Tran
- School of Chemical Engineering and Advanced Materials
- The University of Adelaide
- Adelaide
- Australia
- School of Chemical Engineering
| | - Volker Hessel
- School of Chemical Engineering and Advanced Materials
- The University of Adelaide
- Adelaide
- Australia
- School of Engineering
| |
Collapse
|
26
|
Etrych T, Janoušková O, Chytil P. Fluorescence Imaging as a Tool in Preclinical Evaluation of Polymer-Based Nano-DDS Systems Intended for Cancer Treatment. Pharmaceutics 2019; 11:E471. [PMID: 31547308 PMCID: PMC6781319 DOI: 10.3390/pharmaceutics11090471] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 08/29/2019] [Accepted: 09/04/2019] [Indexed: 01/04/2023] Open
Abstract
Targeted drug delivery using nano-sized carrier systems with targeting functions to malignant and inflammatory tissue and tailored controlled drug release inside targeted tissues or cells has been and is still intensively studied. A detailed understanding of the correlation between the pharmacokinetic properties and structure of the nano-sized carrier is crucial for the successful transition of targeted drug delivery nanomedicines into clinical practice. In preclinical research in particular, fluorescence imaging has become one of the most commonly used powerful imaging tools. Increasing numbers of suitable fluorescent dyes that are excitable in the visible to near-infrared (NIR) wavelengths of the spectrum and the non-invasive nature of the method have significantly expanded the applicability of fluorescence imaging. This chapter summarizes non-invasive fluorescence-based imaging methods and discusses their potential advantages and limitations in the field of drug delivery, especially in anticancer therapy. This chapter focuses on fluorescent imaging from the cellular level up to the highly sophisticated three-dimensional imaging modality at a systemic level. Moreover, we describe the possibility for simultaneous treatment and imaging using fluorescence theranostics and the combination of different imaging techniques, e.g., fluorescence imaging with computed tomography.
Collapse
Affiliation(s)
- Tomáš Etrych
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic.
| | - Olga Janoušková
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic
| | - Petr Chytil
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic
| |
Collapse
|