Comparative whole transcriptome analysis of gene expression in three canine soft tissue sarcoma types

Area of Science:

• Veterinary Oncology
• Molecular Oncology
• Comparative Pathology

Background:

• Soft tissue sarcomas are common in dogs, comprising up to 15% of canine skin cancers.
• These tumors share morphological and growth characteristics, leading to similar treatment approaches like surgery and radiation.
• Previous research on genetic drivers and subtype markers is limited, especially using next-generation sequencing.

Purpose of the Study:

• To examine gene expression patterns in canine soft tissue sarcomas using RNA sequencing.
• To develop a computational framework for tumor categorization, cross-species comparison, and identification of genetic changes.
• To identify transcription factors involved in tumorigenesis and aggression for potential therapeutic targets.

Main Methods:

• RNA sequencing (RNA-seq) analysis of gene expression in archived formalin-fixed, paraffin-embedded canine soft tissue sarcoma samples.
• Development of a computational framework for data analysis, tumor classification, and cross-species comparisons.
• Functional overrepresentation analysis of differentially expressed genes.

Main Results:

• Identified distinct gene expression patterns in canine soft tissue sarcomas.
• Provided a computational framework for analyzing sarcoma genomics and enabling cross-species comparisons.
• Highlighted the role of common and tumor-specific transcription factors in sarcoma development and progression.

Conclusions:

• The RNA-seq approach is valuable for discovering new therapeutic strategies for canine soft tissue sarcomas.
• Both shared and tumor-specific mechanisms contribute to the development of these canine cancers.
• Results support the potential for developing tumor-type specific therapies in veterinary oncology.