Specialized bacteria colonize the mucus-covered lining of the human intestine, the environment Dr. Hoskins spent his career studying. Image © iStock/Alllex.

Newly Named Gut Bacterium Honors Cleveland VA Microbiome Pioneer

A newly described gut bacterium carries the name of Dr. Lansing Hoskins, a Cleveland VA researcher whose 1960s insight into how a few specialized microbes forage the gut’s mucus lining was confirmed half a century later.

September 28, 2026

By Marcus Henry
VA Research Communications

Of the trillions of bacteria that live in the human gut, only a rare few can digest the slick mucus lining that coats the intestinal wall. Dr. Lansing C. Hoskins spent his career at the Cleveland VA working out how this type of bacteria can do what the rest cannot. This winter, scientists gave that work a permanent marker, naming this unique gut organism Hoskinsella mucinilytica in his honor.

The gut shields itself with mucin, a dense glycoprotein gel that most microbes cannot break down. As early as the 1960s, Hoskins proposed a radical idea ahead of its time: certain gut bacteria carry enzyme systems to selectively dismantle mucin’s sugars, and the structure of those sugars varies from person to person according to blood type. Those differences, he argued, act as ecological filters, shaping which microbes take hold in each person’s gut.

More than fifty years later, the discovery of Hoskinsella mucinilytica by Dr. Eric Martens and Nicholas Pudlo confirmed the intuition. Reported in January 2026 in the International Journal of Systematic and Evolutionary Microbiology, the organism is an efficient mucin specialist, able to harvest the very blood-type-dependent sugars Hoskins had predicted. Its naming, for his “pioneering research on mucin foraging bacteria from the human gut microbiota,” places him among the small number of scientists honored with a living namesake, one of the most lasting distinctions in the field.

Hoskins ran his laboratory at the Cleveland VA and cared for Veterans there into his 80s. He is now professor emeritus of medicine at Case Western Reserve University. The Cleveland VA is planning a celebration in his honor, and organizers hope to open it to VA staff nationwide via MS Teams.

“He is a VA Research hero,” said Dr. Robert Bonomo of the Cleveland VA. “His unique and stellar career as a VA investigator and clinician stand out as a role model for us all.”

Hoskins was describing host and microbe co-evolution decades before “microbiome” entered the vocabulary. Now the mucin-foraging bacteria he first characterized not only sit at the center of research on gut health, immunity, and targeted microbiome therapies, they do so with his name.

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