Research projects

In conducting our research regarding steroid resistance of upper and lower airways, we collected　eosinophils and Group 2 innate lymphoid cells (ILC 2s) from surgical specimens of chronic eosinophilic sinusitis and peripheral blood of severe asthmatic patients and examined them. First, we established a method to collect each cell stably from the specimen and blood. Especially, ILC2s with small number in blood was examined using single cell analysis method which can analyze from one cell. As a result, the difference between the healthy subjects and the patient's phenotype (proliferative ability and cytokine production capacity) has become clear. In addition, eosinophils were also examined using comprehensive analysis and revealed differences in productivity of enzymes and mediators as compared to healthy subjects. We are currently investigating the resistance of steroids of these cells and will continue to conduct current research.