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Variety of genetic risk behind bone cancer in dogs

Date:
December 12, 2013
Source:
Uppsala University
Summary:
Bone cancer in dogs is affected by a variety of genetic risk factors. Researchers have discussed these variabilities in a new study. The study demonstrated that each breed has its own risk genes, but these genes converge in common disease mechanisms. Some genes are known cancer genes in humans, while others are completely new discoveries. The researchers also studied one of the risk factors in more detail and found a new regulatory signal that leads to increased gene expression in bone cancer cells from humans.

Osteosarcoma, a type of bone cancer, is a rare but very aggressive form of cancer that primarily affects teenagers. Among some large-sized dog breeds the disease is much more common, but otherwise osteosarcoma in humans and dogs is very similar. In the current study, the researchers compared the genome of sick and healthy dogs from three different breeds to find inherited risk factors for the disease.

"The key is that we find many different risk factors within each breed. We already knew that greyhounds, Rottweilers and Irish wolfhounds are at increased risk of developing bone cancer and our results explain much of the increased risk," said Emma Ivansson, scientist at SciLifeLab and Uppsala University.

The study demonstrated that each breed has its own risk genes, but these genes converge in common disease mechanisms. Some genes are known cancer genes in humans, while others are completely new discoveries. The researchers also studied one of the risk factors in more detail and found a new regulatory signal that leads to increased gene expression in bone cancer cells from humans.

"Our results show that the pathways involved in bone formation and growth are important for the disease. Because of the great similarities between bone cancer in dogs and humans, we believe that our findings may contribute to an increased understanding of how bone cancer develops in humans," said Kerstin Lindblad-Toh, professor at Uppsala University and Co-Director of the SciLifeLab and Director of Vertebrate Genome Biology at the Broad Institute.

The researchers are continuing to study the identified risk factors to understand more about how they affect tumor development and to see whether different risk factors respond to different types of treatment.


Story Source:

The above story is based on materials provided by Uppsala University. The original article was written by Anneli Waara. Note: Materials may be edited for content and length.


Cite This Page:

Uppsala University. "Variety of genetic risk behind bone cancer in dogs." ScienceDaily. ScienceDaily, 12 December 2013. <www.sciencedaily.com/releases/2013/12/131212100148.htm>.
Uppsala University. (2013, December 12). Variety of genetic risk behind bone cancer in dogs. ScienceDaily. Retrieved October 20, 2014 from www.sciencedaily.com/releases/2013/12/131212100148.htm
Uppsala University. "Variety of genetic risk behind bone cancer in dogs." ScienceDaily. www.sciencedaily.com/releases/2013/12/131212100148.htm (accessed October 20, 2014).

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