Sample collection
A total of 106 whole blood samples were collected from the enrolled 51 HCs and 55 asthma patients, respectively. Then,collected peripheral blood was placed into 5 ml EDTA anticoagulation tubes and transferred to a centrifuge tube. After adding 2 volumes of erythrocyte lysate and lysing for 5 minutes, peripheral blood cells were pelleted by centrifugation and stored at -80℃.