Abstract

Mast cells (MCs) are tissue-resident immune cells, which play a pivotal role in skin hypersensitivity reactions. MCs activation via Mas-Related G Protein-Coupled Receptor X2 (MRGPRX2) is independent of the classical IgE-mediated pathway, which gained much interest recently. Calcium mobilization is crucial to mast cell activation and functional regulation. Ryanodine receptor (RYR) expresses on the sarcoplasmic reticulum and regulates intracellular calcium liberation. Although MRGPRX2 activation induces boosted intracellular calcium levels, the role of RYR in MRGPRX2 mediated MC activation has not been fully addressed.

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