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Updated: Jun 6, 2026

Analyzing the Functions of Mast Cells In Vivo Using 'Mast Cell Knock-in' Mice
Published on: May 27, 2015
Mast cell CRAC channel as a novel therapeutic target in allergy
Joseph L Di Capite1, Grant J Bates, Anant B Parekh
1Department of Physiology, Anatomy and Genetics, Oxford University, UK.
Purpose Of Review:
This review describes recent advances in our understanding of a major Ca-entry pathway, the Ca release-activated Ca (CRAC) channel, that is central to mast cell activation.
Recent Findings:
Animals in which the genes encoding the CRAC channel have been deleted have severely compromised mast cell function and reduced allergic responses. These functional consequences reflect the ability of CRAC channels to activate a range of spatially and temporally distinct responses in mast cells, which contribute to both rapid and slow phases of an allergic response. In addition, the cells can sustain their own activation through positive feedback cycles that involve CRAC channels. Drugs that inhibit CRAC channels are proving effective in treatment of allergic responses both in vitro and in animal models of asthma.
Summary:
CRAC channels comprise a new therapeutic target for combating allergies including asthma.
Insights
Calcium release-activated calcium (CRAC) channels are key to mast cell activation and allergic responses. Inhibiting CRAC channels offers a promising new therapeutic target for allergies like asthma.
Area of Science:
- Immunology
- Cell Biology
- Pharmacology
Background:
- Mast cells play a critical role in allergic reactions.
- Calcium influx is a central event in mast cell activation.
- The calcium release-activated calcium (CRAC) channel is a major pathway for calcium entry into mast cells.
Purpose of the Study:
- To review recent advances in understanding the CRAC channel.
- To highlight the CRAC channel's role in mast cell activation and allergic responses.
- To discuss the therapeutic potential of CRAC channel inhibitors.
Main Methods:
- Review of current literature on CRAC channels and mast cell biology.
- Analysis of genetic knockout studies in animal models.
- Evaluation of in vitro and in vivo studies on CRAC channel inhibitors.
Main Results:
- CRAC channels are essential for mast cell function and allergic responses.
- CRAC channels mediate both rapid and sustained mast cell activation.
- CRAC channel inhibition demonstrates efficacy in preclinical models of allergy and asthma.
Conclusions:
- CRAC channels are a validated therapeutic target for allergic diseases.
- Targeting CRAC channels offers a novel strategy for asthma treatment.
- Further research into CRAC channel modulation holds promise for allergy management.
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