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Rönnberg E, Ravindran A, Mazzurana L, Gong Y, Säfholm J, Lorent J, Dethlefsen O, Orre AC, Al-Ameri M, Adner M, Dahlén SE, Dahlin JS, Mjösberg J, Nilsson G. Analysis of human lung mast cells by single cell RNA sequencing. Front Immunol 2023; 14:1151754. [PMID: 37063885 PMCID: PMC10100501 DOI: 10.3389/fimmu.2023.1151754] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 03/15/2023] [Indexed: 04/18/2023] Open
Abstract
Mast cells are tissue-resident cells playing major roles in homeostasis and disease conditions. Lung mast cells are particularly important in airway inflammatory diseases such as asthma. Human mast cells are classically divided into the subsets MCT and MCTC, where MCT express the mast cell protease tryptase and MCTC in addition express chymase, carboxypeptidase A3 (CPA3) and cathepsin G. Apart from the disctintion of the MCT and MCTC subsets, little is known about the heterogeniety of human lung mast cells and a deep analysis of their heterogeniety has previously not been performed. We therefore performed single cell RNA sequencing on sorted human lung mast cells using SmartSeq2. The mast cells showed high expression of classical mast cell markers. The expression of several individual genes varied considerably among the cells, however, no subpopulations were detected by unbiased clustering. Variable genes included the protease-encoding transcripts CMA1 (chymase) and CTSG (cathepsin G). Human lung mast cells are predominantly of the MCT subset and consistent with this, the expression of CMA1 was only detectable in a small proportion of the cells, and correlated moderately to CTSG. However, in contrast to established data for the protein, CPA3 mRNA was high in all cells and the correlation of CPA3 to CMA1 was weak.
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Affiliation(s)
- Elin Rönnberg
- Division of Immunology and Allergy, Department of Medicine Solna, Karolinska Institutet, and Karolinska University Hospital, Stockholm, Sweden
- *Correspondence: Elin Rönnberg, ; Gunnar Nilsson,
| | - Avinash Ravindran
- Division of Immunology and Allergy, Department of Medicine Solna, Karolinska Institutet, and Karolinska University Hospital, Stockholm, Sweden
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Stockholm, Sweden
| | - Luca Mazzurana
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Stockholm, Sweden
| | - Yitao Gong
- Division of Immunology and Allergy, Department of Medicine Solna, Karolinska Institutet, and Karolinska University Hospital, Stockholm, Sweden
| | - Jesper Säfholm
- Unit for Experimental Asthma and Allergy Research Centre for Allergy Research, The Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Julie Lorent
- National Bioinformatics Infrastructure Sweden, Science for Life Laboratory, Stockholm University, Stockholm, Sweden
| | - Olga Dethlefsen
- National Bioinformatics Infrastructure Sweden, Science for Life Laboratory, Stockholm University, Stockholm, Sweden
| | - Ann-Charlotte Orre
- Thoracic Surgery, Department of Molecular Medicine and Surgery, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Mamdoh Al-Ameri
- Thoracic Surgery, Department of Molecular Medicine and Surgery, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Mikael Adner
- Unit for Experimental Asthma and Allergy Research Centre for Allergy Research, The Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Sven-Erik Dahlén
- Unit for Experimental Asthma and Allergy Research Centre for Allergy Research, The Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Joakim S. Dahlin
- Division of Immunology and Allergy, Department of Medicine Solna, Karolinska Institutet, and Karolinska University Hospital, Stockholm, Sweden
| | - Jenny Mjösberg
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Stockholm, Sweden
| | - Gunnar Nilsson
- Division of Immunology and Allergy, Department of Medicine Solna, Karolinska Institutet, and Karolinska University Hospital, Stockholm, Sweden
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
- *Correspondence: Elin Rönnberg, ; Gunnar Nilsson,
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Rönnberg E, Boey DZH, Ravindran A, Säfholm J, Orre AC, Al-Ameri M, Adner M, Dahlén SE, Dahlin JS, Nilsson G. Immunoprofiling Reveals Novel Mast Cell Receptors and the Continuous Nature of Human Lung Mast Cell Heterogeneity. Front Immunol 2022; 12:804812. [PMID: 35058936 PMCID: PMC8764255 DOI: 10.3389/fimmu.2021.804812] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [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: 10/29/2021] [Accepted: 12/06/2021] [Indexed: 12/12/2022] Open
Abstract
Background Immunohistochemical analysis of granule-associated proteases has revealed that human lung mast cells constitute a heterogeneous population of cells, with distinct subpopulations identified. However, a systematic and comprehensive analysis of cell-surface markers to study human lung mast cell heterogeneity has yet to be performed. Methods Human lung mast cells were obtained from lung lobectomies, and the expression of 332 cell-surface markers was analyzed using flow cytometry and the LEGENDScreen™ kit. Markers that exhibited high variance were selected for additional analyses to reveal whether they were correlated and whether discrete mast cell subpopulations were discernable. Results We identified the expression of 102 surface markers on human lung mast cells, 23 previously not described on mast cells, of which several showed high continuous variation in their expression. Six of these markers were correlated: SUSD2, CD49a, CD326, CD34, CD66 and HLA-DR. The expression of these markers was also correlated with the size and granularity of mast cells. However, no marker produced an expression profile consistent with a bi- or multimodal distribution. Conclusions LEGENDScreen analysis identified more than 100 cell-surface markers on mast cells, including 23 that, to the best of our knowledge, have not been previously described on human mast cells. The comprehensive expression profiling of the 332 surface markers did not identify distinct mast cell subpopulations. Instead, we demonstrate the continuous nature of human lung mast cell heterogeneity.
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Affiliation(s)
- Elin Rönnberg
- Division of Immunology and Allergy, Department of Medicine Solna, Karolinska Institutet, and Karolinska University Hospital, Clinical Immunology and Transfusion Medicine, Stockholm, Sweden.,Centre for Allergy Research, Karolinska Institutet, Stockholm, Sweden
| | - Daryl Zhong Hao Boey
- Division of Immunology and Allergy, Department of Medicine Solna, Karolinska Institutet, and Karolinska University Hospital, Clinical Immunology and Transfusion Medicine, Stockholm, Sweden.,Centre for Allergy Research, Karolinska Institutet, Stockholm, Sweden
| | - Avinash Ravindran
- Division of Immunology and Allergy, Department of Medicine Solna, Karolinska Institutet, and Karolinska University Hospital, Clinical Immunology and Transfusion Medicine, Stockholm, Sweden.,Centre for Allergy Research, Karolinska Institutet, Stockholm, Sweden
| | - Jesper Säfholm
- Centre for Allergy Research, Karolinska Institutet, Stockholm, Sweden.,Unit for Experimental Asthma and Allergy Research, The Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Ann-Charlotte Orre
- Thoracic Surgery, Department of Molecular Medicine and Surgery, Karolinska Institutet, and Karolinska University Hospital, Stockholm, Sweden
| | - Mamdoh Al-Ameri
- Thoracic Surgery, Department of Molecular Medicine and Surgery, Karolinska Institutet, and Karolinska University Hospital, Stockholm, Sweden
| | - Mikael Adner
- Centre for Allergy Research, Karolinska Institutet, Stockholm, Sweden.,Unit for Experimental Asthma and Allergy Research, The Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Sven-Erik Dahlén
- Centre for Allergy Research, Karolinska Institutet, Stockholm, Sweden.,Unit for Experimental Asthma and Allergy Research, The Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Joakim S Dahlin
- Division of Immunology and Allergy, Department of Medicine Solna, Karolinska Institutet, and Karolinska University Hospital, Clinical Immunology and Transfusion Medicine, Stockholm, Sweden.,Centre for Allergy Research, Karolinska Institutet, Stockholm, Sweden
| | - Gunnar Nilsson
- Division of Immunology and Allergy, Department of Medicine Solna, Karolinska Institutet, and Karolinska University Hospital, Clinical Immunology and Transfusion Medicine, Stockholm, Sweden.,Centre for Allergy Research, Karolinska Institutet, Stockholm, Sweden.,Department of Medical Sciences, Uppsala University, Uppsala, Sweden
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