Single-cell gene expression analysis of cryopreserved equine bronchoalveolar cells

Sage, Sophie E.; Nicholson, Pamela; Peters, Laureen M.; Leeb, Tosso; Jagannathan, Vidhya; Gerber, Vinzenz (2022). Single-cell gene expression analysis of cryopreserved equine bronchoalveolar cells (In Press). Frontiers in immunology, 13 Frontiers Research Foundation 10.3389/fimmu.2022.929922

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The transcriptomic profile of a cell population can now be studied at the cellular level using single-cell mRNA sequencing (scRNA-seq). This novel technique provides the unprecedented opportunity to explore the cellular composition of the bronchoalveolar lavage fluid (BALF) of the horse, a species for which cell type markers are poorly described. Here, scRNA-seq technology was applied to cryopreserved equine BALF cells. Analysis of 4,631 cells isolated from three asthmatic horses in remission identified 16 cell clusters belonging to six major cell types: monocytes/macrophages, T cells, B/plasma cells, dendritic cells, neutrophils and mast cells. Higher resolution analysis of the constituents of the major immune cell populations allowed deep annotation of monocytes/macrophages, T cells and B/plasma cells. A significantly higher lymphocyte/macrophage ratio was detected with scRNA-seq compared to conventional cytological differential cell count. For the first time in horses, we detected a transcriptomic signature consistent with monocyte-lymphocyte complexes. Our findings indicate that scRNA-seq technology is applicable to cryopreserved equine BALF cells, allowing the identification of its major (cytologically differentiated) populations as well as previously unexplored T cell and macrophage subpopulations. Single-cell gene expression analysis has the potential to facilitate understanding of the immunological mechanisms at play in respiratory disorders of the horse, such as equine asthma.

Item Type:

Journal Article (Original Article)

Division/Institute:

09 Interdisciplinary Units > Next Generation Sequencing (NGS) Platform
05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV) > ISME Equine Clinic Bern > ISME Equine Clinic, Internal medicine
05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV)
05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV) > DKV - Central Clinical Laboratory
05 Veterinary Medicine > Department of Clinical Research and Veterinary Public Health (DCR-VPH) > Institute of Genetics
05 Veterinary Medicine > Department of Clinical Research and Veterinary Public Health (DCR-VPH)

Graduate School:

Graduate School for Cellular and Biomedical Sciences (GCB)

UniBE Contributor:

Sage, Sophie Elena; Nicholson, Pamela; Peters, Laureen Michèle; Leeb, Tosso and Gerber, Vinzenz

Subjects:

500 Science > 590 Animals (Zoology)
600 Technology > 630 Agriculture

ISSN:

1664-3224

Publisher:

Frontiers Research Foundation

Language:

English

Submitter:

Ursula Therese Horst

Date Deposited:

01 Sep 2022 09:50

Last Modified:

05 Dec 2022 16:23

Publisher DOI:

10.3389/fimmu.2022.929922

BORIS DOI:

10.48350/172550

URI:

https://boris.unibe.ch/id/eprint/172550

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