This article has been reviewed according to Science X's editorial process and policies. Editors have highlighted the following attributes while ensuring the content's credibility: Humans love dogs, but petting them can leave some people sneezing and wheezing. About 15% of the world's population lives with a dog allergy, which can increase the risk of hay fever and asthma.
The main culprit is Can f 1, a protein found mainly in dog saliva. Right now, staying away from furry friends or getting regular immunotherapy shots or tablets is the only way to deal with the symptoms. In a recent study published in The CRISPR Journal, researchers wanted to explore whether it is possible to eliminate dog allergies by targeting them directly at their biological source.
Rather than focus on treating human symptoms, they wanted to see whether dogs could be genetically edited to stop producing the allergen altogether. They used CRISPR-Cas9 to make a tiny, highly precise cut in the Can f 1 gene in dog skin cells and inserted a single extra DNA building block at the site. That small change scrambled the gene's instructions, switching it off so it could no longer produce the Can f 1 allergen protein.
The edited DNA was then introduced into mature eggs from donor beagles. The result was two female beagle puppies, Alfie and Bailey, born from cloned embryos. When researchers tested their saliva, hair and dander, they found no detectable trace of the Can f 1 allergen protein.
Dog allergies should never be taken lightly. Symptoms can start small—a runny nose, itchy eyes or skin hives—but they can quickly escalate into serious asthma attacks and breathing difficulties that require medical attention. Keeping the home clean and limiting contact with dogs can help, but it rarely solves the problem.
Dog allergens spread easily and stick around on furniture, clothes and in the air, so avoiding them completely is nearly impossible. Therefore, real solutions are needed, not just workarounds, for anyone who lives with a dog or regularly visits family or friends with one. Most current approaches to dog allergies work by adjusting the human immune response.
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