“In preclinical models, we found that a lipid called a-Galactosylceramide—a-GalCer for short—turns on invariant natural T cells, and this activation causes the production of both peanut IgA and peanut IgE, potentially leading to food allergies,” Liu explained. “I want to find out if there is a similar lipid that humans are getting exposed to—either through food or microbes—that can explain the rise in food allergies.”
For the duration of the grant, Liu will work with her primary mentor, Stephanie Eisenbarth, MD, PhD, associate professor adjunct, whose lab she joined in 2018 to research the role and production of IgA in food allergy. As a lab member, Liu has made fundamental discoveries that further our understanding of antibodies to food, Eisenbarth said.
“She is an outstanding immunologist who will have a substantial impact,” Eisenbarth said. “The work proposed in this career development grant will answer important questions about the role of invariant natural killer T cells in food allergy.”
Liu’s research article “Food-Specific Immunoglobin A Does Not Correlate With Natural Tolerance to Peanut or Egg Allergens,” published in Science Translational Medicine, details an important discovery, says Insoo Kang, MD, professor of medicine (rheumatology, allergy and immunology) and director of Allergy and Immunology.
“She now embarks on furthering her research on the mechanisms of food allergies by investigating invariant natural T cells,” he said. “I am excited about this because she is a superb researcher and clinician, and her work could provide novel insights into the mechanisms of food allergies, leading to the development of new therapeutic approaches.”