John and Leslie Malone pose with Maikel at Harmony Sporthorses, December 2, 2014.

The largest ever cash donation to Colorado State University stems from a novel treatment to get a dressage horse with a bum knee back into the show ring.

John and Leslie Malone's $42.5 million gift, announced Monday, will create the CSU Institute for Biologic Translational Therapies in the College of Veterinary Medicine and Biomedical Sciences, a 100,000-square-foot facility to develop stem-cell research into commercially viable treatments for animals and humans.

"This is the largest cash gift in the history of the university and it's absolutely staggering," said Brett Anderson, CSU's vice president for advancement. "It really allows us to be the best in the nation."

The Malone money will fund half of the $65 million cost to construct the facility. The school is looking for more donations to match the Malones' contribution. So far, an additional $10 million has been raised.

The Malones also provided $10 million to cover the Institute's operating expenses once the facility is built.

"The Malones have been so gracious. We asked them if they want to put their name on the building, but they said if it's helpful to you in order to get another major donor, we are happy to let you name it for someone else," Anderson said. "They are an incredible couple."

John Malone, who made his millions at the helm of Tele-Communications Inc. and now chairs the giant Liberty Media Corp., and his wife, Leslie, could not be reached for comment on Monday.

The Malones, who raise and train dressage and jumping horses on a ranch near Kiowa, last year donated $6 million to the school to establish the Leslie A. Malone Presidential Chair in Equine Sports Medicine.

They later brought Blixt, their dressage horse with a bad knee, to the vet school's Orthopaedic Research Center.

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Malones donate $42.5 million to CSU for new stem-cell research facility