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Modeling molecular development of breast cancer in canine mammary tumors

Author(s): Graim, Kiley; Gorenshteyn, Dmitriy; Robinson, David G; Carriero, Nicholas J; Cahill, James A; et al

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Abstract: Understanding the changes in diverse molecular pathways underlying the development of breast tumors is critical for improving diagnosis, treatment, and drug development. Here, we used RNA-profiling of canine mammary tumors (CMTs) coupled with a robust analysis framework to model molecular changes in human breast cancer. Our study leveraged a key advantage of the canine model, the frequent presence of multiple naturally occurring tumors at diagnosis, thus providing samples spanning normal tissue and benign and malignant tumors from each patient. We showed human breast cancer signals, at both expression and mutation level, are evident in CMTs. Profiling multiple tumors per patient enabled by the CMT model allowed us to resolve statistically robust transcription patterns and biological pathways specific to malignant tumors versus those arising in benign tumors or shared with normal tissues. We showed that multiple histological samples per patient is necessary to effectively capture these progression-related signatures, and that carcinoma-specific signatures are predictive of survival for human breast cancer patients. To catalyze and support similar analyses and use of the CMT model by other biomedical researchers, we provide FREYA, a robust data processing pipeline and statistical analyses framework.
Publication Date: 23-Dec-2020
Citation: Graim, Kiley, Gorenshteyn, Dmitriy, Robinson, David G, Carriero, Nicholas J, Cahill, James A, Chakrabarti, Rumela, Goldschmidt, Michael H, Durham, Amy C, Funk, Julien, Storey, John D, Kristensen, Vessela N, Theesfeld, Chandra L, Sorenmo, Karin U, Troyanskaya, Olga G. (2020). Modeling molecular development of breast cancer in canine mammary tumors. Genome research, 10.1101/gr.256388.119
DOI: doi:10.1101/gr.256388.119
ISSN: 1088-9051
EISSN: 1549-5469
Pages: 1-11
Language: eng
Type of Material: Journal Article
Journal/Proceeding Title: Genome Research
Version: Final published version. This is an open access article.

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