The Texas A&M College of Veterinary Medicine and Biomedical Sciences has received a $7 million grant from the National Institutes of Health to support its Dog Aging Project.

The DAP is a research project that was launched in 2019 by Texas A&M and the University of Washington School of Medicine and has enrolled over 50,000 dogs to date, according to a release. The program studies various breeds of companion dogs and studies the effects of aging to help develop a better understanding of what can lead to an expanded, healthy canine life, which can also assist with human aging knowledge.

The NIH funds will be used to expand a clinical trial studying how the drug rapamycin, also called sirolimus, can extend the lives of companion dogs.

The project, known as Test of Rapamycin In Aging Dogs (TRIAD), is the third DAP clinical trial involving the drug rapamycin. The drug has previously been used as an immunosuppressant during organ transplants in humans. Past DAP studies reported that the drug appears to improve cardiac function in dogs.

“Rapamycin works by modifying the cells’ energy balance and energy handling,” Dr. Kate Creevy, DAP chief veterinary officer and a professor in the VMBS’ Department of Small Animal Clinical Sciences, said in a news release. "It seems to mimic the effects that happen in people or animals who do intermittent fasting. There is a lot of interest in intermittent fasting as a technique that can improve health, particularly healthy aging, and some of the pharmaceutical effects of rapamycin make the same changes at the cellular level.”

So far, 170 dogs are in the trial at 20 sites, with the goal of expanding to 580 dogs enrolled in multiple cities across the country. Dogs must be over 7 years old and in good general health to participate. They should also weigh at least 44 pounds. Owners are required to bring their dogs to one of TRIAD’s participating clinical sites every six months for three years. The Texas clinical sites are in College Station and North Texas.

“Dogs experience many of the age-related cognitive, sensory, neuropathologic and mobility changes that are common in older humans,” Dr. May Reed, a geriatrician at the University of Washington School of Medicine and another primary investigator in the study, said in the release. “The possibility that rapamycin might delay any of the alterations that contribute to cognitive impairment and functional decline is very exciting and has huge translational potential.”

“We get to learn how to support both dog and human aging at the same time. Our research is also powered by owners’ commitments to the health of their dogs, and that’s what makes our work both possible and meaningful,” Creevy added. “We’re very grateful to them.”