Search results for "T follicular helper cells"

showing 3 items of 3 documents

miRNA92a targets KLF2 and the phosphatase PTEN signaling to promote human T follicular helper precursors in T1D islet autoimmunity.

2016

Aberrant immune activation mediated by T effector cell populations is pivotal in the onset of autoimmunity in type 1 diabetes (T1D). T follicular helper (TFH) cells are essential in the induction of high-affinity antibodies, and their precursor memory compartment circulates in the blood. The role of TFH precursors in the onset of islet autoimmunity and signaling pathways regulating their differentiation is incompletely understood. Here, we provide direct evidence that during onset of islet autoimmunity, the insulin-specific target T-cell population is enriched with a C-X-C chemokine receptor type 5 (CXCR5)(+)CD4(+) TFH precursor phenotype. During onset of islet autoimmunity, the frequency o…

0301 basic medicineMaleReceptors CXCR5endocrine systemAdolescentPopulationPrimary Cell CultureKruppel-Like Transcription FactorsAutoimmunityMice TransgenicNodBiologymedicine.disease_causeCXCR5Autoimmunity03 medical and health sciencesIslets of LangerhansMicePhosphatidylinositol 3-Kinases0302 clinical medicineMice Inbred NODmedicineAnimalsHumansIL-2 receptorKlf2 ; Pten-pi3k Signaling ; T Follicular Helper Cells ; Mirna92a ; Type 1 DiabeteseducationChildPI3K/AKT/mTOR pathwayNOD miceAutoantibodiesgeographyeducation.field_of_studyMultidisciplinarygeography.geographical_feature_categoryForkhead Box Protein O1PTEN PhosphohydrolaseAntagomirsT-Lymphocytes Helper-InducerIsletMicroRNAs030104 developmental biologyDiabetes Mellitus Type 1Gene Expression RegulationImmunologyCancer researchFemale030215 immunologySignal Transduction
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T cell Polarization toward T(H)2/T(FH)2 and T(H)17/T(FH)17 in Patients with IgG4-related Disease

2017

International audience; IgG4-related disease (IgG4-RD) is a fibro-inflammatory disorder involving virtually every organ with a risk of organ dysfunction. Despite recent studies regarding B cell and T cell compartments, the disease's pathophysiology remains poorly understood. We examined and characterized subsets of circulating lymphocytes in untreated patients with active IgG4-RD. Twenty-eight consecutive patients with biopsy-proven IgG4-RD were included in a prospective, multicentric study. Lymphocyte's subsets were analyzed by flow cytometry, with analysis of T(H)1/T(H)2/T(H)17, T-FH cells, and cytokine release by peripheral blood mononuclear cells. Results were compared to healthy contro…

0301 basic medicinemedicine.medical_treatmentT cellImmunologyplasmablastsBiologyCXCR3Peripheral blood mononuclear cellFlow cytometry03 medical and health sciencesInterleukin 21T helper cellsmedicineImmunology and AllergyCytotoxic T cellIgG4-related diseaseB cellmedicine.diagnostic_test3. Good health030104 developmental biologyCytokinemedicine.anatomical_structureSjögren’s syndromeImmunologyT follicular helper cells[SDV.IMM]Life Sciences [q-bio]/Immunology
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T Cell Polarization toward T

2016

IgG4-related disease (IgG4-RD) is a fibro-inflammatory disorder involving virtually every organ with a risk of organ dysfunction. Despite recent studies regarding B cell and T cell compartments, the disease’s pathophysiology remains poorly understood. We examined and characterized subsets of circulating lymphocytes in untreated patients with active IgG4-RD. Twenty-eight consecutive patients with biopsy-proven IgG4-RD were included in a prospective, multicentric study. Lymphocytes’ subsets were analyzed by flow cytometry, with analysis of TH1/TH2/TH17, TFH cells, and cytokine release by peripheral blood mononuclear cells. Results were compared to healthy controls and to patients with primary…

T helper cellsSjögren’s syndromeImmunologyT follicular helper cellsplasmablastsIgG4-related diseaseOriginal ResearchFrontiers in immunology
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