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He R, Lu J, Feng J, Lu Z, Shen K, Xu K, Luo H, Yang G, Chi H, Huang S. Advancing immunotherapy for melanoma: the critical role of single-cell analysis in identifying predictive biomarkers. Front Immunol 2024; 15:1435187. [PMID: 39026661 PMCID: PMC11254669 DOI: 10.3389/fimmu.2024.1435187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2024] [Accepted: 06/21/2024] [Indexed: 07/20/2024] Open
Abstract
Melanoma, a malignant skin cancer arising from melanocytes, exhibits rapid metastasis and a high mortality rate, especially in advanced stages. Current treatment modalities, including surgery, radiation, and immunotherapy, offer limited success, with immunotherapy using immune checkpoint inhibitors (ICIs) being the most promising. However, the high mortality rate underscores the urgent need for robust, non-invasive biomarkers to predict patient response to adjuvant therapies. The immune microenvironment of melanoma comprises various immune cells, which influence tumor growth and immune response. Melanoma cells employ multiple mechanisms for immune escape, including defects in immune recognition and epithelial-mesenchymal transition (EMT), which collectively impact treatment efficacy. Single-cell analysis technologies, such as single-cell RNA sequencing (scRNA-seq), have revolutionized the understanding of tumor heterogeneity and immune microenvironment dynamics. These technologies facilitate the identification of rare cell populations, co-expression patterns, and regulatory networks, offering deep insights into tumor progression, immune response, and therapy resistance. In the realm of biomarker discovery for melanoma, single-cell analysis has demonstrated significant potential. It aids in uncovering cellular composition, gene profiles, and novel markers, thus advancing diagnosis, treatment, and prognosis. Additionally, tumor-associated antibodies and specific genetic and cellular markers identified through single-cell analysis hold promise as predictive biomarkers. Despite these advancements, challenges such as RNA-protein expression discrepancies and tumor heterogeneity persist, necessitating further research. Nonetheless, single-cell analysis remains a powerful tool in elucidating the mechanisms underlying therapy response and resistance, ultimately contributing to the development of personalized melanoma therapies and improved patient outcomes.
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Affiliation(s)
- Ru He
- Clinical Medical College, Southwest Medical University, Luzhou, China
| | - Jiaan Lu
- Clinical Medical College, Southwest Medical University, Luzhou, China
| | - Jianglong Feng
- Department of Pathology, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Ziqing Lu
- Clinical Medical College, Southwest Medical University, Luzhou, China
| | - Kaixin Shen
- Department of Art and Design, Shanghai Institute of Technology, Shanghai, China
| | - Ke Xu
- Department of Oncology, Chongqing General Hospital, Chongqing University, Chongqing, China
| | - Huiyan Luo
- Department of Oncology, Chongqing General Hospital, Chongqing University, Chongqing, China
| | - Guanhu Yang
- Department of Specialty Medicine, Ohio University, Athens, OH, United States
| | - Hao Chi
- Clinical Medical College, Southwest Medical University, Luzhou, China
| | - Shangke Huang
- Department of Oncology, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan, China
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2
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Arnett LP, Rana R, Chung WWY, Li X, Abtahi M, Majonis D, Bassan J, Nitz M, Winnik MA. Reagents for Mass Cytometry. Chem Rev 2023; 123:1166-1205. [PMID: 36696538 DOI: 10.1021/acs.chemrev.2c00350] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Mass cytometry (cytometry by time-of-flight detection [CyTOF]) is a bioanalytical technique that enables the identification and quantification of diverse features of cellular systems with single-cell resolution. In suspension mass cytometry, cells are stained with stable heavy-atom isotope-tagged reagents, and then the cells are nebulized into an inductively coupled plasma time-of-flight mass spectrometry (ICP-TOF-MS) instrument. In imaging mass cytometry, a pulsed laser is used to ablate ca. 1 μm2 spots of a tissue section. The plume is then transferred to the CyTOF, generating an image of biomarker expression. Similar measurements are possible with multiplexed ion bean imaging (MIBI). The unit mass resolution of the ICP-TOF-MS detector allows for multiparametric analysis of (in principle) up to 130 different parameters. Currently available reagents, however, allow simultaneous measurement of up to 50 biomarkers. As new reagents are developed, the scope of information that can be obtained by mass cytometry continues to increase, particularly due to the development of new small molecule reagents which enable monitoring of active biochemistry at the cellular level. This review summarizes the history and current state of mass cytometry reagent development and elaborates on areas where there is a need for new reagents. Additionally, this review provides guidelines on how new reagents should be tested and how the data should be presented to make them most meaningful to the mass cytometry user community.
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Affiliation(s)
- Loryn P Arnett
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, OntarioM5S 3H6, Canada
| | - Rahul Rana
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, OntarioM5S 3H6, Canada
| | - Wilson Wai-Yip Chung
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, OntarioM5S 3H6, Canada
| | - Xiaochong Li
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, OntarioM5S 3H6, Canada
| | - Mahtab Abtahi
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, OntarioM5S 3H6, Canada
| | - Daniel Majonis
- Standard BioTools Canada Inc. (formerly Fluidigm Canada Inc.), 1380 Rodick Road, Suite 400, Markham, OntarioL3R 4G5, Canada
| | - Jay Bassan
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, OntarioM5S 3H6, Canada
| | - Mark Nitz
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, OntarioM5S 3H6, Canada
| | - Mitchell A Winnik
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, OntarioM5S 3H6, Canada.,Department of Chemical Engineering and Applied Chemistry, 200 College Street, Toronto, OntarioM5S 3E5, Canada
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3
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Glasson Y, Chépeaux LA, Dumé AS, Lafont V, Faget J, Bonnefoy N, Michaud HA. Single-cell high-dimensional imaging mass cytometry: one step beyond in oncology. Semin Immunopathol 2023; 45:17-28. [PMID: 36598557 PMCID: PMC9812013 DOI: 10.1007/s00281-022-00978-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 12/11/2022] [Indexed: 01/05/2023]
Abstract
Solid tumors have a dynamic ecosystem in which malignant and non-malignant (endothelial, stromal, and immune) cell types constantly interact. Importantly, the abundance, localization, and functional orientation of each cell component within the tumor microenvironment vary significantly over time and in response to treatment. Such intratumoral heterogeneity influences the tumor course and its sensitivity to treatments. Recently, high-dimensional imaging mass cytometry (IMC) has been developed to explore the tumor ecosystem at the single-cell level. In the last years, several studies demonstrated that IMC is a powerful tool to decipher the tumor complexity. In this review, we summarize the potential of this technology and how it may be useful for cancer research (from preclinical to clinical studies).
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Affiliation(s)
- Yaël Glasson
- IRCM, Univ Montpellier, ICM, Plateforme de Cytométrie Et d’Imagerie de Masse, Inserm Montpellier, France
| | - Laure-Agnès Chépeaux
- IRCM, Univ Montpellier, ICM, Plateforme de Cytométrie Et d’Imagerie de Masse, Inserm Montpellier, France
| | - Anne-Sophie Dumé
- IRCM, Univ Montpellier, ICM, Plateforme de Cytométrie Et d’Imagerie de Masse, Inserm Montpellier, France
| | | | - Julien Faget
- IRCM, Univ Montpellier, ICM, Inserm Montpellier, France
| | - Nathalie Bonnefoy
- IRCM, Univ Montpellier, ICM, Plateforme de Cytométrie Et d’Imagerie de Masse, Inserm Montpellier, France
| | - Henri-Alexandre Michaud
- IRCM, Univ Montpellier, ICM, Plateforme de Cytométrie Et d'Imagerie de Masse, Inserm Montpellier, France.
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4
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Zhao J, Liu Y, Wang M, Ma J, Yang P, Wang S, Wu Q, Gao J, Chen M, Qu G, Wang J, Jiang G. Insights into highly multiplexed tissue images: A primer for Mass Cytometry Imaging data analysis. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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5
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Maxwell ZA, Suazo KF, Brown HM, Distefano MD, Arriaga EA. Combining Isoprenoid Probes with Antibody Markers for Mass Cytometric Analysis of Prenylation in Single Cells. Anal Chem 2022; 94:11521-11528. [PMID: 35952372 PMCID: PMC9441216 DOI: 10.1021/acs.analchem.2c01509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Protein prenylation is an essential post-translational modification that plays a key role in facilitating protein localization. Aberrations in protein prenylation have been indicated in multiple disease pathologies including progeria, some forms of cancer, and Alzheimer's disease. While there are single-cell methods to study prenylation, these methods cannot simultaneously assess prenylation and other cellular changes in the complex cell environment. Here, we report a novel method to monitor, at the single-cell level, prenylation and expression of autophagy markers. An isoprenoid analogue containing a terminal alkyne, substrate of prenylation enzymes, was metabolically incorporated into cells in culture. Treatment with a terbium reporter containing an azide functional group, followed by copper-catalyzed azide-alkyne cycloaddition, covalently attached terbium ions to prenylated proteins within cells. In addition, simultaneous treatment with a holmium-containing analogue of the reporter, without an azide functional group, was used to correct for non-specific retention at the single-cell level. This procedure was compatible with other mass cytometric sample preparation steps that use metal-tagged antibodies. We demonstrate that this method reports changes in levels of prenylation in competitive and inhibitor assays, while tracking autophagy molecular markers with metal-tagged antibodies. The method reported here makes it possible to track prenylation along with other molecular pathways in single cells of complex systems, which is essential to elucidate the role of this post-translational modification in disease, cell response to pharmacological treatments, and aging.
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6
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Zhang Y, Liu P, Majonis D, Winnik MA. Polymeric dipicolylamine based mass tags for mass cytometry. Chem Sci 2022; 13:3233-3243. [PMID: 35414868 PMCID: PMC8926288 DOI: 10.1039/d2sc00595f] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 02/10/2022] [Indexed: 11/23/2022] Open
Abstract
Mass cytometry is an emerging powerful bioanalytical technique for high-dimensional single-cell analysis. In this technique, cells are stained with metal-isotope-tagged antibodies and are analyzed by an inductively coupled plasma time-of-flight mass spectrometer. While there are more than 100 stable isotopes available in the m/z 75 to 209 detection range of the instrument, only about 50 parameters can be measured per cell because current reagents are metal-chelating polymers with pendant aminocarboxylate chelators that only bind hard metal ions such as the rare earths and Bi3+. Here we describe the synthesis and characterization of a new type of metal-chelating polymer with pendant dipicolylamine chelators suited to binding intermediate to soft metals such as rhenium and platinum. We introduce two different conjugation strategies, a thiol–maleimide reaction that works well for rhenium, and a DBCO-azide click reaction designed to avoid potential complications of Pt and other heavy metals interacting with thiol groups. We show that these polymers can serve as new elemental mass tags for mass cytometry. Antibody-polymer conjugates of CD20 and CD8a prepared by both coupling reactions were employed in conjunction with commercial metal-conjugated antibodies for multi-parameter single-cell immunoassays. A new type of metal-chelating polymer with pendant dipicolylamine chelators that bind rhenium and platinum has been developed for mass cytometry applications.![]()
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Affiliation(s)
- Yefeng Zhang
- Department of Chemistry, University of Toronto 80 St. George Street Toronto ON M5S 3H6 Canada
| | - Peng Liu
- Fluidigm Canada Inc. 1380 Rodick Road, Suite 400 Markham ON L3R 4G5 Canada
| | - Daniel Majonis
- Fluidigm Canada Inc. 1380 Rodick Road, Suite 400 Markham ON L3R 4G5 Canada
| | - Mitchell A Winnik
- Department of Chemistry, University of Toronto 80 St. George Street Toronto ON M5S 3H6 Canada
- Department of Chemical Engineering and Applied Chemistry, University of Toronto Toronto ON M5S 3E5 Canada
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7
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Hyperion Image Analysis Depicts a Preliminary Landscape of Tumor Immune Microenvironment in OSCC with Lymph Node Metastasis. J Immunol Res 2021; 2021:9975423. [PMID: 34239944 PMCID: PMC8238606 DOI: 10.1155/2021/9975423] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/20/2021] [Accepted: 06/04/2021] [Indexed: 12/13/2022] Open
Abstract
Background Oral squamous cell carcinoma (OSCC) constitutes the most common types of oral cancer. Because its prognosis varies significantly, identification of a tumor immune microenvironment could be a critical tool for treatment planning and predicting a more accurate prognosis. This study is aimed at utilizing the Hyperion imaging system to depict a preliminary landscape of the tumor immune microenvironment in OSCC with lymph node metastasis. Methods We collected neoplasm samples from OSCC patients. Their formalin-fixed, paraffin-embedded (FFPE) tissue sections were obtained and stained utilizing a panel of 26 clinically relevant metal-conjugated antibodies. Detection and analysis were performed for these stained cells with the Hyperion imaging system. Results Four patients met our inclusion criteria. We depicted a preliminary landscape of their tumor immune microenvironment and identified 25 distinct immune cell subsets from these OSCC patients based on phenotypic similarity. All these patients had decreased expression of CD8+ T cells in tumor specimens. Variety in cell subsets was seen, and more immune activated cells were found in patient A and patient B than those in patient C and patient D. Such differences in tumor immune microenvironments can contribute to forecasting of individual prognoses. Conclusion The Hyperion imaging system helped to delineate a preliminary and multidimensional landscape of the tumor immune microenvironment in OSCC with lymph node metastasis and provided insights into the influence of the immune microenvironment in determination of prognoses. These results reveal possible contributory factors behind different prognoses of OSCC patients with lymph node metastasis and provide reference for individual treatment planning.
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8
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Delgado-Gonzalez A, Sanchez-Martin RM. Mass Cytometry Tags: Where Chemistry Meets Single-Cell Analysis. Anal Chem 2021; 93:657-664. [PMID: 33320535 DOI: 10.1021/acs.analchem.0c03560] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Mass cytometry is a highly multiparametric proteomic technology that allows the measurement and quantification of nearly 50 markers with single-cell resolution. Mass cytometry reagents are probes tagged with metal isotopes of defined mass and act as reporters. Metals are detected using inductively coupled plasma time-of-flight mass spectrometry (ICP-TOF-MS). Many different types of mass-tag reagents have been developed to afford myriad applications. We have classified these compounds into polymer-based mass-tag reagents, nonpolymer-based mass-tag reagents, and inorganic nanoparticles. Metal-chelating polymers (MCPs) are widely used to profile and quantify cellular biomarkers; however, both the range of metals that can be detected and the metal signals have to be improved. Several strategies such as the inclusion of chelating agents or highly branched polymers may overcome these issues. Biocompatible materials such as polystyrene and inorganic nanoparticles are also of profound interest in mass cytometry. While polystyrene allows the inclusion of a wide variety of metals, the high metal content of inorganic nanoparticles offers an excellent opportunity to increase the signal from the metals to detect low-abundance biomarkers. Nonpolymer-based mass-tag reagents offer multiple applications: cell detection, cell cycle property determination, biomarker detection, and mass-tag cellular barcoding (MCB). Recent developments have been achieved in live cell barcoding by targeting proteins (CD45, b2m, and CD298), by using small and nonpolar probes or by ratiometric barcoding. From this perspective, the principal applications, strengths, and shortcomings of mass-tag reagents are highlighted, summarized, and discussed, with special emphasis on mass-tag reagents for MCB. Thereafter, the future perspectives of mass-tag reagents are discussed considering the current state-of-the-art technologies.
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Affiliation(s)
- Antonio Delgado-Gonzalez
- Department of Medicinal and Organic Chemistry, Excellence Research Unit of "Chemistry Applied to Biomedicine and the Environment", Faculty of Pharmacy, University of Granada, Campus Cartuja, 18071 Granada, Spain.,GENYO, Pfizer-University of Granada-Junta de Andalucia Centre for Genomics and Oncological Research, P.T. Ciencias de la Salud 114, 18016 Granada, Spain
| | - Rosario M Sanchez-Martin
- Department of Medicinal and Organic Chemistry, Excellence Research Unit of "Chemistry Applied to Biomedicine and the Environment", Faculty of Pharmacy, University of Granada, Campus Cartuja, 18071 Granada, Spain.,GENYO, Pfizer-University of Granada-Junta de Andalucia Centre for Genomics and Oncological Research, P.T. Ciencias de la Salud 114, 18016 Granada, Spain
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9
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Rana R, Chang Q, Bassan J, Chow S, Hedley D, Nitz M. An Iodinated DAPI-Based Reagent for Mass Cytometry. Chembiochem 2020; 22:532-538. [PMID: 32897623 DOI: 10.1002/cbic.202000369] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 09/02/2020] [Indexed: 01/04/2023]
Abstract
Multiparametric single-cell analysis has seen dramatic improvements with the introduction of mass cytometry (MC) and imaging mass cytometry (IMC™ ). These technologies expanded the number of biomarkers that can be identified simultaneously by using heavy-isotope-tagged antibody reagents. Small-molecule probes bearing heavy isotopes are emerging as additional useful functional reporters of cellular features. Realizing this, we explored the iodination of DAPI to produce a heavy-atom-substituted derivative of the commonly used fluorescent DNA stain. Although exhibiting a drastically reduced fluorescence emission profile, I-DAPI retains strong binding affinity for DNA. I-DAPI was used to detect cellular DNA in MC and IMC™ assays with comparable efficiency to known Ir-containing DNA intercalators. This work suggests repurposing well-known colorimetric stains through simple reactions could be an effective strategy to develop new, functional MC and IMC™ reagents.
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Affiliation(s)
- Rahul Rana
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - Qing Chang
- Fluidigm Canada Inc., 1380 Rodick Road, Markham, ON L3R 4G5, Canada
| | - Jay Bassan
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada.,BIMDAQ Ltd, 9 Lessness Avenue, Bexleyheath, DA7 5SH, UK
| | - Sue Chow
- Division of Medical Oncology and Hematology, Princess Margaret Cancer Centre, 610 University Avenue, Toronto, ON M5G 2 M9, Canada
| | - David Hedley
- Division of Medical Oncology and Hematology, Princess Margaret Cancer Centre, 610 University Avenue, Toronto, ON M5G 2 M9, Canada
| | - Mark Nitz
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
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10
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Xie S, Shan XF, Yau V, Zhang JY, Zhang XY, Yan YP, Cai ZG. Hyperion imaging system reveals heterogeneous tumor microenvironment of oral squamous cell carcinoma patients at T1N0M0 stage. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:1513. [PMID: 33313258 PMCID: PMC7729358 DOI: 10.21037/atm-20-7194] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Background Oral squamous cell carcinoma (OSCC) is a highly heterogeneous neoplasm where the identification of heterogeneity is a critical clinical need to improve treatment planning and prognosis prediction. Utilizing the Hyperion imaging system to carry out high-dimensional proteomics analysis on the heterogeneity of tumor samples, this study aims to detect and analyze the heterogeneity of OSCC without lymph node metastasis and explore potential contributing factors for poor prognosis of early-stage OSCC. Methods We collected tumor tissue samples from four OSCC patients at the T1N0M0 stage, who presented with similar clinical manifestations. Patient formalin-fixed, paraffin-embedded (FFPE) tissue sections were prepared and stained using a panel of 26 immune or tumor-related antibodies. Different metal tags were assigned to each antibody. The stained cells were then detected and analyzed by the Hyperion imaging system. Results Tumor samples of four OSCC patients presenting with similar clinical characteristics at the T1N0M0 stage had different cell subtypes, including CD4+ T cells, CD8+ T cells, CD19+ B cells, CD11c+ dendritic cells, CD56+ natural killer cells, granulocytes, etc. More immunosuppressive cells were found in the sample of patient 1. We propose that differences in the tumor microenvironment of samples may contribute to different patients’ prognosis in the future. Conclusions High-dimensional proteomics analyses using the Hyperion imaging system help identify and analyze the tumor microenvironment heterogeneity of OSCC. Our study now presents this valuable resource and explains the potential reasons behind early OSCC patients’ poor prognosis.
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Affiliation(s)
- Shang Xie
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Xiao-Feng Shan
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Vicky Yau
- Stony Brook University School of Dental Medicine, South Drive, Stony Brook, NY, USA
| | - Jian-Yun Zhang
- Department of Oral Pathology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Xin-Yuan Zhang
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | | | - Zhi-Gang Cai
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
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11
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Zhang Y, Zabinyakov N, Majonis D, Bouzekri A, Ornatsky O, Baranov V, Winnik MA. Tantalum Oxide Nanoparticle-Based Mass Tag for Mass Cytometry. Anal Chem 2020; 92:5741-5749. [DOI: 10.1021/acs.analchem.9b04970] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yefeng Zhang
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Nick Zabinyakov
- Fluidigm Canada Inc.,1380 Rodick Road, Suite 400, Markham, Ontario L3R 4G5, Canada
| | - Daniel Majonis
- Fluidigm Canada Inc.,1380 Rodick Road, Suite 400, Markham, Ontario L3R 4G5, Canada
| | - Alexandre Bouzekri
- Fluidigm Canada Inc.,1380 Rodick Road, Suite 400, Markham, Ontario L3R 4G5, Canada
| | - Olga Ornatsky
- Fluidigm Canada Inc.,1380 Rodick Road, Suite 400, Markham, Ontario L3R 4G5, Canada
| | - Vladimir Baranov
- Fluidigm Canada Inc.,1380 Rodick Road, Suite 400, Markham, Ontario L3R 4G5, Canada
| | - Mitchell A. Winnik
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E5, Canada
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12
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Zhang Y, Gambardella A, Üçüncü M, Geng J, Clavadetscher J, Bradley M, Lilienkampf A. Multifunctional, histidine-tagged polymers: antibody conjugation and signal amplification. Chem Commun (Camb) 2020; 56:13856-13859. [DOI: 10.1039/d0cc04591h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A polymer scaffold, with multiple reactive centres, was synthesised by RAFT polymerisation and conjugated to the antibody herceptin. A hexahistidine RAFT agent enabled simple purification of polymer–protein conjugates.
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Affiliation(s)
- Yichuan Zhang
- EaStCHEM School of Chemistry
- University of Edinburgh
- Edinburgh
- UK
- Shenzhen Institutes of Advanced Technology
| | | | - Muhammed Üçüncü
- EaStCHEM School of Chemistry
- University of Edinburgh
- Edinburgh
- UK
- Department of Analytical Chemistry, Faculty of Pharmacy
| | - Jin Geng
- EaStCHEM School of Chemistry
- University of Edinburgh
- Edinburgh
- UK
- Shenzhen Institutes of Advanced Technology
| | | | - Mark Bradley
- EaStCHEM School of Chemistry
- University of Edinburgh
- Edinburgh
- UK
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13
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Damond N, Engler S, Zanotelli VRT, Schapiro D, Wasserfall CH, Kusmartseva I, Nick HS, Thorel F, Herrera PL, Atkinson MA, Bodenmiller B. A Map of Human Type 1 Diabetes Progression by Imaging Mass Cytometry. Cell Metab 2019; 29:755-768.e5. [PMID: 30713109 PMCID: PMC6821395 DOI: 10.1016/j.cmet.2018.11.014] [Citation(s) in RCA: 181] [Impact Index Per Article: 36.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 09/13/2018] [Accepted: 11/21/2018] [Indexed: 12/29/2022]
Abstract
Type 1 diabetes (T1D) results from the autoimmune destruction of insulin-producing β cells. A comprehensive picture of the changes during T1D development is lacking due to limited sample availability, inability to sample longitudinally, and the paucity of technologies enabling comprehensive tissue profiling. Here, we analyzed 1,581 islets from 12 human donors, including eight with T1D, using imaging mass cytometry (IMC). IMC enabled simultaneous measurement of 35 biomarkers with single-cell and spatial resolution. We performed pseudotime analysis of islets through T1D progression from snapshot data to reconstruct the evolution of β cell loss and insulitis. Our analyses revealed that β cell destruction is preceded by a β cell marker loss and by recruitment of cytotoxic and helper T cells. The approaches described herein demonstrate the value of IMC for improving our understanding of T1D pathogenesis, and our data lay the foundation for hypothesis generation and follow-on experiments.
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Affiliation(s)
- Nicolas Damond
- Institute of Molecular Life Sciences, University of Zurich, Zurich, Switzerland
| | - Stefanie Engler
- Institute of Molecular Life Sciences, University of Zurich, Zurich, Switzerland
| | - Vito R T Zanotelli
- Institute of Molecular Life Sciences, University of Zurich, Zurich, Switzerland; Systems Biology PhD Program, Life Science Zurich Graduate School, ETH Zurich and University of Zurich, Zurich, Switzerland
| | - Denis Schapiro
- Institute of Molecular Life Sciences, University of Zurich, Zurich, Switzerland
| | - Clive H Wasserfall
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Irina Kusmartseva
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Harry S Nick
- Department of Neuroscience, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Fabrizio Thorel
- Department of Genetic Medicine and Development, iGE3 and Centre facultaire du diabète, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Pedro L Herrera
- Department of Genetic Medicine and Development, iGE3 and Centre facultaire du diabète, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Mark A Atkinson
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Bernd Bodenmiller
- Institute of Molecular Life Sciences, University of Zurich, Zurich, Switzerland.
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