Cationic substances, including some drugs, can activate mast cells in an IgE-independent manner, leading to histamine release, inflammation and airway contraction; here, the G-protein-coupled receptor MrgprB2, the orthologue of human MRGPRX2, is shown to be the sole mast cell receptor for these substances in mice.
- Benjamin D. McNeil
- Priyanka Pundir
- Xinzhong Dong
