Cats: New Partners in Human Cancer Research
Owning a cat offers many health benefits, including reduced stress and emotional support. Now, new scientific research suggests our feline friends might also provide crucial clues in the fight against certain cancers.
Cross-Species Parallels in Cancer
A new study published in the journal Science analyzed tumor samples from nearly 500 domestic cats, covering 13 types of cancer including brain, breast, lung, and skin cancer. The research found significant parallels in cancer development between cats and humans.
Co-author Louise van der Weyden, a scientist at the Wellcome Sanger Institute in the UK, noted that cats, like dogs, are excellent research models as they share our living environment, including pollutants like second-hand smoke. When they develop cancer, they often also suffer from other ailments like diabetes or heart disease, mirroring the human experience.
Discovery of a Key Genetic Mutation
Researchers probed the DNA of cat tumor cells for markers already known in human medicine. A key finding emerged in breast cancer: the gene FBXW7 was found to be mutated in more than half of the feline mammary tumors analyzed.
Van der Weyden explained that this type of mutation is not common in women with breast cancer, but when it does occur, it leads to a particularly aggressive form of the disease. Intriguingly, the same mutation causes highly aggressive cancer in cats. "It's a really good model for what you see in humans, in terms of the biology of it," she said.
Potential from Lab to Clinic
This discovery is "great" for patients affected by this mutation, as it could pave the way for new treatments. Conducting human clinical trials is difficult given the small number of affected patients. However, because many cats suffer from this mutation, targeted treatments could be tested more broadly in veterinary clinics.
Van der Weyden added with a smile that she personally would be more inclined to "take a drug based on it working in cats" rather than in mice.
A Win-Win Future
Encouraged by this parallel, Swiss researchers conducted additional experiments and discovered that two chemotherapy treatments appeared very effective against tumors with this particular mutation. While the results need confirmation, these drugs are already approved for human and veterinary use, meaning potential benefits could quickly reach both women and cats.
Professor Harikrishna Nakshatri, who studies breast cancer at Indiana University, called the results "fascinating," saying the data could help scientists better understand cancer development, specifically how genes interact with environmental factors often considered prime triggers.
Van der Weyden concluded that the findings could result in a "win-win" for humans and our beloved pets. "We're genomically so similar, the tumors we develop are so similar. What you learn in one species can be used to help the other."