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Partial dysfunction of Treg activation in sickle cell disease.
- Source :
-
American journal of hematology [Am J Hematol] 2014 Mar; Vol. 89 (3), pp. 261-6. - Publication Year :
- 2014
-
Abstract
- Sickle cell disease (SCD) is a chronic inflammatory disease associated with multiple organ damage, chronic anemia, and infections. SCD patients have a high rate of alloimmunization against red blood cells (RBCs) following transfusion and may develop autoimmune diseases. Studies in mouse models have suggested that regulatory T cells (Treg) play a role in alloimmunization against RBC antigens. We characterized the phenotype and function of the Treg cell population in a homogeneous cohort of transfused SCD patients. We found that the distribution of Treg subpopulations differed significantly between SCD patients and healthy blood donors. SCD patients have a particular Treg phenotype, with strong CTLA-4 and CD39 expression and weak HLA-DR and CCR7 expression. Finally, we show that this particular phenotype is related to SCD rather than alloimmunization status. Indeed, we observed no difference in Treg phenotype or function in vitro using autologous feeder cells between strong and weak responders to alloimmunization.
- Subjects :
- Adult
Antigens, CD immunology
Blood Group Antigens immunology
CTLA-4 Antigen immunology
Female
HLA-DR Antigens immunology
Humans
Male
Middle Aged
Phenotype
Receptors, CCR7 immunology
Young Adult
Anemia, Sickle Cell immunology
Blood Group Incompatibility immunology
Erythrocytes immunology
T-Lymphocytes, Regulatory immunology
Subjects
Details
- Language :
- English
- ISSN :
- 1096-8652
- Volume :
- 89
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- American journal of hematology
- Publication Type :
- Academic Journal
- Accession number :
- 24779034
- Full Text :
- https://doi.org/10.1002/ajh.23629