Journal
BLOOD
Volume 118, Issue 19, Pages 5246-5249Publisher
AMER SOC HEMATOLOGY
DOI: 10.1182/blood-2011-02-335950
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Funding
- Inserm, la Ligue Nationale Contre le Cancer
- Agence Nationale pour la Recherche
- Fondation pour la Recherche Medicale
- Institut National du Cancer
- Societe Francaise de Dermatologie
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Mastocytosis is a heterogeneous disease characterized by the accumulation of mast cells in one or more organs. Our objective was to identify a peripheral mast cell precursor and assess its variation rate in mastocytosis. A peripheral blood phenotypic analysis was performed among 50 patients with mastocytosis who were enrolled in a prospective multicentric French study, and the phenotypic analysis results of the patients were compared with those of healthy donors. The rate of peripheral blood CD34(-)c-Kit(+) cells correlated with the severity of mastocytosis. This cellular population was isolated from healthy donors as well as from patients with systemic mastocytosis. After 30 days of culture, the CD34(-)c-Kit(+) cells gave birth to mature mast cells, indicating that this cellular population constitutes a mast cell circulating precursor. Monitoring peripheral CD34(-)c-Kit(+) cells by flow cytometry could be a useful and low-invasive tool to determine the disease severity and the relapses and to assess treatment efficiency. (Blood. 2011; 118(19):5246-5249)
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