Researchers from Pritzker Molecular Engineering, under the guidance of Prof. Jeffrey Hubbell, demonstrated that their compound can eliminate the autoimmune response linked to multiple sclerosis. Researchers at the University of Chicago's Pritzker School of Molecular Engineering (PME) have developed
The article explains it as tagging your own cells in your body with a marker that makes the immune system ignore them. Doesn’t seem like a foreign body encountered sporadically would work. Allergies and autoimmune (like CL IV celiac) are different classifications of hypersensitivity with different mediating mechanisms. https://en.wikipedia.org/wiki/Hypersensitivity