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Wei J, Zhu K, Wang T, Qi T, Wang Z, Li J, Zong S, Cui Y. Highly Accurate Profiling of Exosome Phenotypes Using Super-resolution Tricolor Fluorescence Co-localization. ACS NANO 2024; 18:10206-10215. [PMID: 38536943 DOI: 10.1021/acsnano.4c00534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
Exosomes contain a wealth of proteomic information, presenting promising biomarkers for the noninvasive early diagnosis of diseases, especially cancer. However, it remains a great challenge to accurately and reliably distinguish exosomes secreted from different types of cell lines. Fluorescence immunoassay is frequently used for exosome detection. Nonspecific adsorption in immunoassays is unavoidable and affects the reliability of assay results. Despite the fact that various methods have been proposed to reduce nonspecific adsorption, a more effective method that can eliminate the influence of nonspecific adsorption is still lacking. Here, we report a more convenient way (named SR-TFC) to remove the artifacts caused by nonspecific adsorption, which combines tricolor fluorescence labeling of target exosomes, tricolor super-resolution imaging, and pixel counting. The pixel counting method (named CFPP) is realized by MATLAB and can eliminate nonspecific binding sites at the single-pixel level, which has never been achieved before and could improve the reliability of detection to the maximum extent. Furthermore, as a proof-of-concept, profiling of exosomal membrane proteins and identification of breast cancer subpopulations are demonstrated. To enable multiplex breast cancer phenotypic analysis, three kinds of specific proteins are labeled to obtain the 3D phenotypic information on various exosomes. Breast cancer subtypes can be accurately identified according to the super-resolution images of some clinically relevant exosomal proteins. Worth mentioning is that, by selecting other biomarkers, classification of other cancers could also be realized using SR-TFC. Hence, the present work holds great potential in clinical cancer diagnosis and precision medicine.
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Affiliation(s)
- Jinxiu Wei
- Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing, Jiangsu 210096, China
| | - Kai Zhu
- Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing, Jiangsu 210096, China
| | - Tingyu Wang
- Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing, Jiangsu 210096, China
| | - Tongsheng Qi
- Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing, Jiangsu 210096, China
| | - Zhuyuan Wang
- Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing, Jiangsu 210096, China
| | - Jia Li
- Department of Ultrasonography, Zhongda Hospital, Medical School Southeast University, Nanjing, Jiangsu 210009, China
| | - Shenfei Zong
- Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing, Jiangsu 210096, China
| | - Yiping Cui
- Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing, Jiangsu 210096, China
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Highly sensitive and selective fluorescent monomer/polymer probes for Hg2+ and Ag+ recognition and imaging of Hg2+ in living cells. Anal Bioanal Chem 2019; 412:881-894. [DOI: 10.1007/s00216-019-02297-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 11/12/2019] [Accepted: 11/20/2019] [Indexed: 12/22/2022]
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Shah NM, Lai PF, Imami N, Johnson MR. Progesterone-Related Immune Modulation of Pregnancy and Labor. Front Endocrinol (Lausanne) 2019; 10:198. [PMID: 30984115 PMCID: PMC6449726 DOI: 10.3389/fendo.2019.00198] [Citation(s) in RCA: 115] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 03/11/2019] [Indexed: 12/17/2022] Open
Abstract
Pregnancy involves a complex interplay between maternal neuroendocrine and immunological systems in order to establish and sustain a growing fetus. It is thought that the uterus at pregnancy transitions from quiescent to laboring state in response to interactions between maternal and fetal systems at least partly via altered neuroendocrine signaling. Progesterone (P4) is a vital hormone in maternal reproductive tissues and immune cells during pregnancy. As such, P4 is widely used in clinical interventions to improve the chance of embryo implantation, as well as reduce the risk of miscarriage and premature labor. Here we review research to date that focus on the pathways through which P4 mediates its actions on both the maternal reproductive and immune system. We will dissect the role of P4 as a modulator of inflammation, both systemic and intrinsic to the uterus, during human pregnancy and labor.
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Affiliation(s)
- Nishel M. Shah
- Department of Surgery and Cancer, Chelsea and Westminster Hospital, Imperial College London, London, United Kingdom
| | - Pei F. Lai
- Department of Surgery and Cancer, Chelsea and Westminster Hospital, Imperial College London, London, United Kingdom
| | - Nesrina Imami
- Department of Medicine, Chelsea and Westminster Hospital, Imperial College London, London, United Kingdom
| | - Mark R. Johnson
- Department of Surgery and Cancer, Chelsea and Westminster Hospital, Imperial College London, London, United Kingdom
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Al-Essa MK, Melzer S, Tárnok A. Two-Color Analysis of Leukocytes Labeled by Modified RBCs and Their Fragments. Cytometry A 2018; 95:339-346. [PMID: 30578619 DOI: 10.1002/cyto.a.23682] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 09/06/2018] [Accepted: 10/25/2018] [Indexed: 11/08/2022]
Abstract
Red blood cells (RBCs) are attractive tools for surface modification to adhere specifically to molecules, cellular fragments (e.g., microvesicles), or whole cells for potential use in bioanalytical assays or as a delivery vehicle in targeted therapy. Within this study, we have loaded RBCs with fluorochrome-conjugated antibodies (Ab) against CD45 and CD22 leukocyte markers and evaluated the conjugation process by microscopy. We have assessed the potential application of RBCs fragments generated from conjugated RBCs for targeting Cyto-Trol control cells by flow cytometric (FCM) approaches. Based on their scattering and fluorescence characteristics (FITC and PE expression), modified RBCs and their fragments, Cyto-Trol cells, and clusters of both were distinguished by two color FCM analysis. Fragments with anti-human Kallestad Ab as a nonspecific FITC conjugate had less than 20% binding to Cyto-Trol controls compared to CD45-FITC Ab conjugate with nearly 100% binding capacity. Cyto-Trol-microvesicle-clusters were more than 45% positive for either FITC or PE. Anti-CD22-PE modified RBCs fragments were also useful in staining and showing about 19.5% positively stained events in the Cyto-Trol region. The proof-of-concept shows, that specific antibody can be attached to RBCs, and generated fragments can be useful to stain target cells for FCM analysis. © 2018 International Society for Advancement of Cytometry.
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Affiliation(s)
- Mohamed K Al-Essa
- Department of Physiology and Biochemistry, Faculty of Medicine, The University of Jordan, Amman, Jordan
| | - Susanne Melzer
- Clinical Trial Center Leipzig, Leipzig University, Leipzig, Germany
| | - Attila Tárnok
- Institute for Medical Informatics, Statistics and Epidemiology (IMISE), University of Leipzig, Leipzig, Germany.,Department of Precision Instrument, Tsinghua University, Beijing, China.,Department of Therapy Validation, Fraunhofer Institute for Cell Therapy and Immunology IZI, Leipzig, Germany
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Abstract
Glucocorticoids (GCs) are steroid hormones with widespread effects. They control intermediate metabolism by stimulating gluconeogenesis in the liver, mobilize amino acids from extra hepatic tissues, inhibit glucose uptake in muscle and adipose tissue, and stimulate fat breakdown in adipose tissue. They also mediate stress response. They exert potent immune-suppressive and anti-inflammatory effects particularly when administered pharmacologically. Understanding these diverse effects of glucocorticoids requires a detailed knowledge of their mode of action. Research over the years has uncovered several details on the molecular action of this hormone, especially in immune cells. In this chapter, we have summarized the latest findings on the action of glucocorticoids in immune cells with a view of identifying important control points that may be relevant in glucocorticoid therapy.
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Strehl C, Buttgereit F. Unraveling the functions of the membrane-bound glucocorticoid receptors: first clues on origin and functional activity. Ann N Y Acad Sci 2014; 1318:1-6. [PMID: 24611742 DOI: 10.1111/nyas.12364] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Glucocorticoids (GCs) are routinely used to treat a wide range of rheumatic and other inflammatory diseases. GCs are steroidal drugs that exert their strong anti-inflammatory and immunosuppressive effects via genomic mechanisms, primarily by signaling through the cytosolic glucocorticoid receptor. In addition, rapid, nongenomic responses following GC treatment have been reported to involve signaling via the membrane-bound glucocorticoid receptor (mGR). Since an important clinical role of this receptor has been proposed, investigations regarding the origin and function of the mGR are currently performed in order to understand rapid GC signaling and to optimize treatment strategies with GCs. Here, we summarize the current knowledge on the mGR and compare these findings to results obtained for other membrane-bound receptors, such as membrane forms of the estrogen and progesterone receptors.
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Affiliation(s)
- Cindy Strehl
- Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin Berlin, Campus Mitte, Berlin, Germany
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Anselmo A, Mazzon C, Borroni EM, Bonecchi R, Graham GJ, Locati M. Flow cytometry applications for the analysis of chemokine receptor expression and function. Cytometry A 2014; 85:292-301. [DOI: 10.1002/cyto.a.22439] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 12/16/2013] [Accepted: 12/27/2013] [Indexed: 02/03/2023]
Affiliation(s)
- Achille Anselmo
- Humanitas Clinical and Research Center; Rozzano Milan 20089 Italy
| | - Cristina Mazzon
- Humanitas Clinical and Research Center; Rozzano Milan 20089 Italy
| | - Elena Monica Borroni
- Humanitas Clinical and Research Center; Rozzano Milan 20089 Italy
- Department of Medical Biotechnologies and Translational Medicine; University of Milan; Rozzano Milan 20089 Italy
| | - Raffaella Bonecchi
- Humanitas Clinical and Research Center; Rozzano Milan 20089 Italy
- Department of Medical Biotechnologies and Translational Medicine; University of Milan; Rozzano Milan 20089 Italy
| | - Gerard J. Graham
- Chemokine Research Group, Institute of Infection, Immunity and Inflammation; University of Glasgow; Glasgow G12 8TA United Kingdom
| | - Massimo Locati
- Humanitas Clinical and Research Center; Rozzano Milan 20089 Italy
- Department of Medical Biotechnologies and Translational Medicine; University of Milan; Rozzano Milan 20089 Italy
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Bhardwaj A, Kumar L, Mehta S, Mehta A. Stimuli-sensitive Systems-an emerging delivery system for drugs. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2013. [DOI: 10.3109/21691401.2013.856016] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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