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Schlecht A, Boneva S, Salie H, Killmer S, Wolf J, Hajdu RI, Auw-Haedrich C, Agostini H, Reinhard T, Schlunck G, Bengsch B, Lange CA. Imaging mass cytometry for high-dimensional tissue profiling in the eye. BMC Ophthalmol 2021; 21:338. [PMID: 34544377 PMCID: PMC8454101 DOI: 10.1186/s12886-021-02099-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 09/02/2021] [Indexed: 11/10/2022] Open
Abstract
Background Imaging mass cytometry (IMC) combines the principles of flow cytometry and mass spectrometry (MS) with laser scanning spatial resolution and offers unique advantages for the analysis of tissue samples in unprecedented detail. In contrast to conventional immunohistochemistry, which is limited in its application by the number of possible fluorochrome combinations, IMC uses isoptope-coupled antibodies that allow multiplex analysis of up to 40 markers in the same tissue section simultaneously. Methods In this report we use IMC to analyze formalin-fixed, paraffin-embedded conjunctival tissue. We performed a 18-biomarkers IMC analysis of conjunctival tissue to determine and summarize the possibilities, relevance and limitations of IMC for deciphering the biology and pathology of ocular diseases. Results Without modifying the manufacturer’s protocol, we observed positive and plausible staining for 12 of 18 biomarkers. Subsequent bioinformatical single-cell analysis and phenograph clustering identified 24 different cellular clusters with distinct expression profiles with respect to the markers used. Conclusions IMC enables highly multiplexed imaging of ocular samples at subcellular resolution. IMC is an innovative and feasible method, providing new insights into ocular disease pathogenesis that will be valuable for basic research, drug discovery and clinical diagnostics. Supplementary Information The online version contains supplementary material available at 10.1186/s12886-021-02099-8.
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Affiliation(s)
- Anja Schlecht
- Faculty of Medicine, Eye Center, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany.,Institute of Anatomy, Wuerzburg University, Wuerzburg, Germany
| | - Stefaniya Boneva
- Faculty of Medicine, Eye Center, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany
| | - Henrike Salie
- Faculty of Medicine, Department of Medicine II, Gastroenterology, Hepatology, Endocrinology and Infectious Disease, University Medical Center Freiburg, Freiburg, Germany
| | - Saskia Killmer
- Faculty of Medicine, Department of Medicine II, Gastroenterology, Hepatology, Endocrinology and Infectious Disease, University Medical Center Freiburg, Freiburg, Germany
| | - Julian Wolf
- Faculty of Medicine, Eye Center, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany
| | - Rozina Ida Hajdu
- Faculty of Medicine, Eye Center, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany.,Department of Ophthalmology, Semmelweis University, Budapest, Hungary
| | - Claudia Auw-Haedrich
- Faculty of Medicine, Eye Center, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany
| | - Hansjürgen Agostini
- Faculty of Medicine, Eye Center, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany
| | - Thomas Reinhard
- Faculty of Medicine, Eye Center, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany
| | - Günther Schlunck
- Faculty of Medicine, Eye Center, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany
| | - Bertram Bengsch
- Faculty of Medicine, Department of Medicine II, Gastroenterology, Hepatology, Endocrinology and Infectious Disease, University Medical Center Freiburg, Freiburg, Germany
| | - Clemens Ak Lange
- Faculty of Medicine, Eye Center, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany.
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