Transcriptional Differences between Canine Cutaneous Epitheliotropic Lymphoma and Immune-Mediated Dermatoses.

Gerber, Nadja; Brunner, Magdalena A. T.; Jagannathan, Vidya; Leeb, Tosso; Gerhards, Nora M.; Welle, Monika M.; Dettwiler, Martina (2021). Transcriptional Differences between Canine Cutaneous Epitheliotropic Lymphoma and Immune-Mediated Dermatoses. Genes, 12(2) MDPI, Molecular Diversity Preservation International 10.3390/genes12020160

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Canine cutaneous epitheliotropic T-cell lymphoma (CETL) and immune-mediated T-cell predominant dermatoses (IMD) share several clinical and histopathological features, but differ substantially in prognosis. The discrimination of ambiguous cases may be challenging, as diagnostic tests are limited and may prove equivocal. This study aimed to investigate transcriptional differences between CETL and IMD, as a basis for further research on discriminating diagnostic biomarkers. We performed 100bp single-end sequencing on RNA extracted from formalin-fixed and paraffin-embedded skin biopsies from dogs with CETL and IMD, respectively. DESeq2 was used for principal component analysis (PCA) and differential gene expression analysis. Genes with significantly different expression were analyzed for enriched pathways using two different tools. The expression of selected genes and their proteins was validated by RT-qPCR and immunohistochemistry. PCA demonstrated the distinct gene expression profiles of CETL and IMD. In total, 503 genes were upregulated, while 4986 were downregulated in CETL compared to IMD. RT-qPCR confirmed the sequencing results for 5/6 selected genes tested, while the protein expression detected by immunohistochemistry was not entirely consistent. Our study revealed transcriptional differences between canine CETL and IMD, with similarities to human cutaneous lymphoma. Differentially expressed genes are potential discriminatory markers, but require further validation on larger sample collections.

Item Type:

Journal Article (Original Article)

Division/Institute:

05 Veterinary Medicine > Research Foci > DermFocus
05 Veterinary Medicine > Department of Infectious Diseases and Pathobiology (DIP) > Institute of Animal Pathology
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)

UniBE Contributor:

Gerber, Nadja; Brunner, Magdalena Anna Theresa; Jagannathan, Vidya; Leeb, Tosso; Gerhards, Nora Merete; Welle, Monika Maria and Dettwiler, Martina Andrea

Subjects:

500 Science > 590 Animals (Zoology)
600 Technology > 630 Agriculture
500 Science > 570 Life sciences; biology
600 Technology > 610 Medicine & health

ISSN:

2073-4425

Publisher:

MDPI, Molecular Diversity Preservation International

Language:

English

Submitter:

Tosso Leeb

Date Deposited:

01 Feb 2021 16:27

Last Modified:

01 Feb 2021 16:27

Publisher DOI:

10.3390/genes12020160

PubMed ID:

33504055

Uncontrolled Keywords:

Canis lupus familiaris FFPE tissue RNA sequencing cutaneous T-cell lymphoma cytotoxic dermatitis dog lupus erythematosus skin disease transcriptome

BORIS DOI:

10.48350/151654

URI:

https://boris.unibe.ch/id/eprint/151654

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