TY - JOUR
T1 - Regulatory T cell features in chronic granulomatous disease
AU - van de Geer, A.
AU - Cuadrado, E.
AU - Slot, M. C.
AU - van Bruggen, R.
AU - Amsen, D.
AU - Kuijpers, T. W.
PY - 2019/8/1
Y1 - 2019/8/1
N2 - Chronic granulomatous disease (CGD) is a primary immunodeficiency caused by mutations in any of the genes encoding the phagocyte nicotinamide adenine dinucleotide phosphate (NADPH) oxidase system, responsible for the production of reactive oxygen species (ROS). CGD is marked by invasive bacterial and fungal infections and by autoinflammation/autoimmunity, of which the exact pathophysiology remains elusive. Contributing factors include decreased neutrophil apoptosis, impaired apoptotic neutrophil clearance, increased proinflammatory protein expression and reduced ROS-mediated inflammasome dampening. We have explored a fundamentally different potential mechanism: it has been reported that macrophage-mediated induction of regulatory T cells (Tregs) depends on ROS production. We have investigated whether numerical or functional deficiencies exist in Tregs of CGD patients. As the prevalence of autoinflammation/autoimmunity differs between CGD subtypes, we have also investigated Tregsfrom gp91phox-, p47phox- and p40phox-deficient CGD patients separately. Results show that Tregnumbers and suppressive capacities are not different in CGD patients compared to healthy controls, with the exception that in gp91phox-deficiency effector Treg (eTreg) numbers are decreased. Expression of Treg markers CD25, inducible T cell co-stimulator (ICOS), Helios, cytotoxic T lymphocyte antigen 4 (CTLA-4) and glucocorticoid-induced tumor necrosis factor receptor (GITR) did not provide any clue for differences in Tregfunctionality or activation state. No correlation was seen between eTregnumbers and patients' clinical phenotype. To conclude, the only difference between Tregs from CGD patients and healthy controls is a decrease in circulating eTregsin gp91phox-deficiency. In terms of autoinflammation/autoimmunity, this group is the most affected. However, upon culture, patient-derived Tregs showed a normal phenotype and normal functional suppressor activity. No other findings pointed towards a role for Tregs in CGD-related autoinflammation/autoimmunity.
AB - Chronic granulomatous disease (CGD) is a primary immunodeficiency caused by mutations in any of the genes encoding the phagocyte nicotinamide adenine dinucleotide phosphate (NADPH) oxidase system, responsible for the production of reactive oxygen species (ROS). CGD is marked by invasive bacterial and fungal infections and by autoinflammation/autoimmunity, of which the exact pathophysiology remains elusive. Contributing factors include decreased neutrophil apoptosis, impaired apoptotic neutrophil clearance, increased proinflammatory protein expression and reduced ROS-mediated inflammasome dampening. We have explored a fundamentally different potential mechanism: it has been reported that macrophage-mediated induction of regulatory T cells (Tregs) depends on ROS production. We have investigated whether numerical or functional deficiencies exist in Tregs of CGD patients. As the prevalence of autoinflammation/autoimmunity differs between CGD subtypes, we have also investigated Tregsfrom gp91phox-, p47phox- and p40phox-deficient CGD patients separately. Results show that Tregnumbers and suppressive capacities are not different in CGD patients compared to healthy controls, with the exception that in gp91phox-deficiency effector Treg (eTreg) numbers are decreased. Expression of Treg markers CD25, inducible T cell co-stimulator (ICOS), Helios, cytotoxic T lymphocyte antigen 4 (CTLA-4) and glucocorticoid-induced tumor necrosis factor receptor (GITR) did not provide any clue for differences in Tregfunctionality or activation state. No correlation was seen between eTregnumbers and patients' clinical phenotype. To conclude, the only difference between Tregs from CGD patients and healthy controls is a decrease in circulating eTregsin gp91phox-deficiency. In terms of autoinflammation/autoimmunity, this group is the most affected. However, upon culture, patient-derived Tregs showed a normal phenotype and normal functional suppressor activity. No other findings pointed towards a role for Tregs in CGD-related autoinflammation/autoimmunity.
UR - https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85064657337&origin=inward
UR - https://www.ncbi.nlm.nih.gov/pubmed/30924925
U2 - https://doi.org/10.1111/cei.13300
DO - https://doi.org/10.1111/cei.13300
M3 - Article
C2 - 30924925
SN - 0009-9104
VL - 197
SP - 222
EP - 229
JO - Clinical and experimental immunology
JF - Clinical and experimental immunology
IS - 2
ER -