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Breton V, Nazac P, Boulet D, Danglot L. Molecular mapping of neuronal architecture using STORM microscopy and new fluorescent probes for SMLM imaging. NEUROPHOTONICS 2024; 11:014414. [PMID: 38464866 PMCID: PMC10923464 DOI: 10.1117/1.nph.11.1.014414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 01/27/2024] [Accepted: 01/31/2024] [Indexed: 03/12/2024]
Abstract
Imaging neuronal architecture has been a recurrent challenge over the years, and the localization of synaptic proteins is a frequent challenge in neuroscience. To quantitatively detect and analyze the structure of synapses, we recently developed free SODA software to detect the association of pre and postsynaptic proteins. To fully take advantage of spatial distribution analysis in complex cells, such as neurons, we also selected some new dyes for plasma membrane labeling. Using Icy SODA plugin, we could detect and analyze synaptic association in both conventional and single molecule localization microscopy, giving access to a molecular map at the nanoscale level. To replace those molecular distributions within the neuronal three-dimensional (3D) shape, we used MemBright probes and 3D STORM analysis to decipher the entire 3D shape of various dendritic spine types at the single-molecule resolution level. We report here the example of synaptic proteins within neuronal mask, but these tools have a broader spectrum of interest since they can be used whatever the proteins or the cellular type. Altogether with SODA plugin, MemBright probes thus provide the perfect toolkit to decipher a nanometric molecular map of proteins within a 3D cellular context.
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Affiliation(s)
- Victor Breton
- Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris, INSERM U1266, Membrane Traffic in Healthy and Diseased Brain, Paris, France
| | - Paul Nazac
- Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris, INSERM U1266, Membrane Traffic in Healthy and Diseased Brain, Paris, France
| | - David Boulet
- Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris, INSERM U1266, Membrane Traffic in Healthy and Diseased Brain, Paris, France
- Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris, INSERM U1266, NeurImag Core Facility, Paris, France
| | - Lydia Danglot
- Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris, INSERM U1266, Membrane Traffic in Healthy and Diseased Brain, Paris, France
- Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris, INSERM U1266, NeurImag Core Facility, Paris, France
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Yang B, Wang X, Hu X, Xiao Y, Xu X, Yu X, Wang M, Luo H, Li J, Ma Y, Shen W. Platelet morphology, ultrastructure and function changes in acute ischemic stroke patients based on structured illumination microscopy. Heliyon 2023; 9:e18543. [PMID: 37600369 PMCID: PMC10432616 DOI: 10.1016/j.heliyon.2023.e18543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 07/18/2023] [Accepted: 07/20/2023] [Indexed: 08/22/2023] Open
Abstract
Acute ischemic stroke (AIS) is the second leading cause of death worldwide. This study aims at assessing platelet morphology, ultrastructure and function changes of platelets in acute ischemic stroke (AIS) patients by the technique of Structured Illumination Microscopy (SIM). This assay collected platelet-rich plasma (PRP) from 11 AIS patients and 12 healthy controls. Each PRP sample was divided into 7 groups:1) rest group; 2) Thrombin-treated 5 min group; 3) Thrombin plus 2MeSAMP-treated 5 min group; 4) Thrombin plus Aspirin-treated 5 min group; 5) Thrombin-treated 1 h group; 6) Thrombin plus 2MeSAMP-treated 1 h group; 7) Thrombin plus Aspirin-treated 1 h group. SIM was applied to observe dense granules and α-granules morphology changes of platelet in AIS patients. FIJI was used to quantify the image data. We finally observed 1448 images of platelets within the 7 groups. In rest group, 7162 platelets were calculated platelet diameter, CD63 dots, average CD63-positive dots area, CD63-positive area per platelet, CD63-positive area Fov, VWF dots, average VWF-positive dots area, VWF-positive area per platelet and VWF-positive area Fov. ELISA was used to detect release of platelet factor 4 (PF4) of α-granules. The results showed that AIS patients had lower number and smaller area of platelet granules. Platelet α-granules of AIS patients concentrated to parenchymal-like fluorescent blocks in Thrombin-treated 1 h group. Antiplatelet drug treatment could reverse the concentration of platelets α-granules, and 2MeSAMP was more powerful than Aspirin in vitro. This study complemented detail information of platelet ultrastructure of AIS patients, provided a new perspective on the pathogenesis of AIS and the mechanism of antiplatelet drugs based on SIM and provided a reference for future related studies. SIM-based analysis of platelet ultrastructure may be useful for detecting antiplatelet drugs and AIS in the future.
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Affiliation(s)
- Bingxin Yang
- Wuhan Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Xifeng Wang
- Wuhan Forth Hospital, Wuhan, Hubei, 430030, China
| | - Xiaoyu Hu
- Wuhan Blood Center-Huazhong University of Science and Technology United Hematology Optical Imaging Center, Hubei Institute of Blood Transfusion, Wuhan Blood Center, Wuhan, Hubei, 430030, China
| | - Yao Xiao
- Wuhan Forth Hospital, Wuhan, Hubei, 430030, China
| | - Xueyu Xu
- Wuhan Forth Hospital, Wuhan, Hubei, 430030, China
| | - Xiaomei Yu
- Wuhan Forth Hospital, Wuhan, Hubei, 430030, China
| | - Min Wang
- Wuhan Forth Hospital, Wuhan, Hubei, 430030, China
| | - Honglian Luo
- Wuhan Forth Hospital, Wuhan, Hubei, 430030, China
| | - Jun Li
- Wuhan Forth Hospital, Wuhan, Hubei, 430030, China
| | - Yan Ma
- Wuhan Blood Center-Huazhong University of Science and Technology United Hematology Optical Imaging Center, Hubei Institute of Blood Transfusion, Wuhan Blood Center, Wuhan, Hubei, 430030, China
| | - Wei Shen
- Wuhan Forth Hospital, Wuhan, Hubei, 430030, China
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Bergstrand J, Miao X, Srambickal CV, Auer G, Widengren J. Fast, streamlined fluorescence nanoscopy resolves rearrangements of SNARE and cargo proteins in platelets co-incubated with cancer cells. J Nanobiotechnology 2022; 20:292. [PMID: 35729633 PMCID: PMC9210740 DOI: 10.1186/s12951-022-01502-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 06/07/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Increasing evidence suggests that platelets play a central role in cancer progression, with altered storage and selective release from platelets of specific tumor-promoting proteins as a major mechanism. Fluorescence-based super-resolution microscopy (SRM) can resolve nanoscale spatial distribution patterns of such proteins, and how they are altered in platelets upon different activations. Analysing such alterations by SRM thus represents a promising, minimally invasive strategy for platelet-based diagnosis and monitoring of cancer progression. However, broader applicability beyond specialized research labs will require objective, more automated imaging procedures. Moreover, for statistically significant analyses many SRM platelet images are needed, of several different platelet proteins. Such proteins, showing alterations in their distributions upon cancer progression additionally need to be identified. RESULTS A fast, streamlined and objective procedure for SRM platelet image acquisition, analysis and classification was developed to overcome these limitations. By stimulated emission depletion SRM we imaged nanoscale patterns of six different platelet proteins; four different SNAREs (soluble N-ethylmaleimide factor attachment protein receptors) mediating protein secretion by membrane fusion of storage granules, and two angiogenesis regulating proteins, representing cargo proteins within these granules coupled to tumor progression. By a streamlined procedure, we recorded about 100 SRM images of platelets, for each of these six proteins, and for five different categories of platelets; incubated with cancer cells (MCF-7, MDA-MB-231, EFO-21), non-cancer cells (MCF-10A), or no cells at all. From these images, structural similarity and protein cluster parameters were determined, and probability functions of these parameters were generated for the different platelet categories. By comparing these probability functions between the categories, we could identify nanoscale alterations in the protein distributions, allowing us to classify the platelets into their correct categories, if they were co-incubated with cancer cells, non-cancer cells, or no cells at all. CONCLUSIONS The fast, streamlined and objective acquisition and analysis procedure established in this work confirms the role of SNAREs and angiogenesis-regulating proteins in platelet-mediated cancer progression, provides additional fundamental knowledge on the interplay between tumor cells and platelets, and represent an important step towards using tumor-platelet interactions and redistribution of nanoscale protein patterns in platelets as a basis for cancer diagnostics.
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Affiliation(s)
- Jan Bergstrand
- Department of Applied Physics, Experimental Biomolecular Physics, Albanova Univ Center, Royal Institute of Technology (KTH), 106 91, Stockholm, Sweden
| | - Xinyan Miao
- Department of Applied Physics, Experimental Biomolecular Physics, Albanova Univ Center, Royal Institute of Technology (KTH), 106 91, Stockholm, Sweden
| | - Chinmaya Venugopal Srambickal
- Department of Applied Physics, Experimental Biomolecular Physics, Albanova Univ Center, Royal Institute of Technology (KTH), 106 91, Stockholm, Sweden
| | - Gert Auer
- Department of Oncology-Pathology, K7, Z1:00, Karolinska University Hospital, Karolinska Institutet, 171 76, Stockholm, Sweden
| | - Jerker Widengren
- Department of Applied Physics, Experimental Biomolecular Physics, Albanova Univ Center, Royal Institute of Technology (KTH), 106 91, Stockholm, Sweden.
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Abstract
Blood cell analysis is essential for the diagnosis and identification of hematological malignancies. The use of digital microscopy systems has been extended in clinical laboratories. Super-resolution microscopy (SRM) has attracted wide attention in the medical field due to its nanoscale spatial resolution and high sensitivity. It is considered to be a potential method of blood cell analysis that may have more advantages than traditional approaches such as conventional optical microscopy and hematology analyzers in certain examination projects. In this review, we firstly summarize several common blood cell analysis technologies in the clinic, and analyze the advantages and disadvantages of these technologies. Then, we focus on the basic principles and characteristics of three representative SRM techniques, as well as the latest advances in these techniques for blood cell analysis. Finally, we discuss the developmental trend and possible research directions of SRM, and provide some discussions on further development of technologies for blood cell analysis.
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Smith CW. Release of α-granule contents during platelet activation. Platelets 2021; 33:491-502. [PMID: 34569425 DOI: 10.1080/09537104.2021.1913576] [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: 10/20/2022]
Abstract
Upon activation, platelets release a plethora of factors which help to mediate their dynamic functions in hemostasis, inflammation, wound healing, tumor metastasis and angiogenesis. The majority of these bioactive molecules are released from α-granules, which are unique to platelets, and contain an incredibly diverse repertoire of cargo including; integral membrane proteins, pro-coagulant molecules, chemokines, mitogenic, growth and angiogenic factors, adhesion proteins, and microbicidal proteins. Clinically, activation of circulating platelets has increasingly been associated with various disease states. Biomarkers indicating the level of platelet activation in patients can therefore be useful tools to evaluate risk factors to predict future complications and determine treatment strategies or evaluate antiplatelet therapy. The irreversible nature of α-granule secretion makes it ideally suited as a marker of platelet activation. This review outlines the release and contents of platelet α-granules, as well as the membrane bound, and soluble α-granule cargo proteins that can be used as biomarkers of platelet activation.
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Affiliation(s)
- Christopher W Smith
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, B15 2TT, Birmingham, UK
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Stanly TA, Suman R, Rani GF, O’Toole PJ, Kaye PM, Hitchcock IS. Quantitative Optical Diffraction Tomography Imaging of Mouse Platelets. Front Physiol 2020; 11:568087. [PMID: 33041864 PMCID: PMC7526686 DOI: 10.3389/fphys.2020.568087] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 08/25/2020] [Indexed: 11/13/2022] Open
Abstract
Platelets are specialized anucleate cells that play a major role in hemostasis following vessel injury. More recently, platelets have also been implicated in innate immunity and inflammation by directly interacting with immune cells and releasing proinflammatory signals. It is likely therefore that in certain pathologies, such as chronic parasitic infections and myeloid malignancies, platelets can act as mediators for hemostatic and proinflammatory responses. Fortunately, murine platelet function ex vivo is highly analogous to human, providing a robust model for functional comparison. However, traditional methods of studying platelet phenotype, function and activation status often rely on using large numbers of whole isolated platelet populations, which severely limits the number and type of assays that can be performed with mouse blood. Here, using cutting edge 3D quantitative phase imaging, holotomography, that uses optical diffraction tomography (ODT), we were able to identify and quantify differences in single unlabeled, live platelets with minimal experimental interference. We analyzed platelets directly isolated from whole blood of mice with either a JAK2V617F-positive myeloproliferative neoplasm (MPN) or Leishmania donovani infection. Image analysis of the platelets indicates previously uncharacterized differences in platelet morphology, including altered cell volume and sphericity, as well as changes in biophysical parameters such as refractive index (RI) and dry mass. Together, these data indicate that, by using holotomography, we were able to identify clear disparities in activation status and potential functional ability in disease states compared to control at the level of single platelets.
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Affiliation(s)
- Tess A. Stanly
- York Biomedical Research Institute, Department of Biology, University of York, York, United Kingdom
| | - Rakesh Suman
- Technology Facility, Department of Biology, University of York, York, United Kingdom
| | - Gulab Fatima Rani
- York Biomedical Research Institute, Hull York Medical School, University of York, York, United Kingdom
| | - Peter J. O’Toole
- Technology Facility, Department of Biology, University of York, York, United Kingdom
| | - Paul M. Kaye
- York Biomedical Research Institute, Hull York Medical School, University of York, York, United Kingdom
| | - Ian S. Hitchcock
- York Biomedical Research Institute, Department of Biology, University of York, York, United Kingdom
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