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Updated: Mar 26, 2026

Analyzing the Functions of Mast Cells In Vivo Using 'Mast Cell Knock-in' Mice

Analyzing the Functions of Mast Cells In Vivo Using 'Mast Cell Knock-in' Mice

Published on: May 27, 2015

Mast cell differentiation: still open questions?

¹ECOLE NORMALE SUPERIEURE DE CACHAN.

|January 30, 2016

Summary

This summary is machine-generated.

Researchers identified a rare type of immature mast cell (MC) progenitor in human peripheral blood. This finding is relevant for understanding mast cell development in healthy individuals and asthma patients.

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Last Updated: Mar 26, 2026

Analyzing the Functions of Mast Cells In Vivo Using 'Mast Cell Knock-in' Mice

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Published on: May 27, 2015

Isolation of Peritoneum-derived Mast Cells and Their Functional Characterization with Ca2+-imaging and Degranulation Assays

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Published on: July 4, 2018

Investigating Mast Cell Secretory Granules; from Biosynthesis to Exocytosis

Investigating Mast Cell Secretory Granules; from Biosynthesis to Exocytosis

Published on: January 26, 2015

Area of Science:

Immunology
Hematology

Background:

Mast cells (MCs) play a crucial role in allergic responses and immune regulation.
Understanding the origin and development of MCs is essential for investigating immune-related diseases.

Purpose of the Study:

To identify and characterize a novel circulating human mast cell progenitor population.
To investigate the presence of this progenitor in healthy individuals and asthma patients.

Main Methods:

Flow cytometry analysis of peripheral blood mononuclear cells.
Immunophenotyping using a panel of specific cell surface markers (Lin−/CD34hi/CD117int/hi/FcεRI+).

Main Results:

A minor population of immature, mast cell-like progenitor cells was identified in the peripheral blood.
This progenitor population was detected in healthy individuals and in asthma subjects with controlled disease or reduced lung function.

Conclusions:

A distinct circulating human mast cell progenitor exists.
The presence of this progenitor in asthma patients suggests its potential role in disease pathophysiology or regulation.