Project description:We compared differences in fetal and adult T cells by performing whole genome profiling on sort-purified T cells (naïve CD4+ and Treg cells) from human fetal specimens (18-22 gestational weeks) and adult specimens (age 25-40 years old). Fetal and Adult Naïve CD4+ T cells phenotype: CD3+CD4+CD45RA+CCR7+CD27+, Fetal and Adult CD4+CD25+ Treg phenotype: CD3+CD4+CD25bright Four different groups were analyzed: Fetal Naïve CD4+ T cells, Adult Naïve CD4+ T cells, Fetal Treg cells, Adult Treg cells. For each group three independent donors were analyzed.
Project description:This SuperSeries is composed of the following subset Series: GSE25085: Comparison of gene expression profiles by CD3+CD4+ thymocytes derived from fetal and adult hematopoietic stem cells GSE25087: Human Fetal and Adult Peripheral Naïve CD4+ T cells and CD4+CD25+ Treg cells Refer to individual Series
Project description:We compared differences in fetal and adult T cells by performing whole genome profiling on sort-purified T cells (naïve CD4+ and Treg cells) from human fetal specimens (18-22 gestational weeks) and adult specimens (age 25-40 years old). Fetal and Adult Naïve CD4+ T cells phenotype: CD3+CD4+CD45RA+CCR7+CD27+, Fetal and Adult CD4+CD25+ Treg phenotype: CD3+CD4+CD25bright
Project description:Single cell transcriptomic analysis of human CD25+ CD127- CD4+ Treg cells and CD25- CD127+ CD4+ Tconv cells isolated from peripheral blood from two different donors
Project description:This study evaluated changes in gene expression upon IL-7 treatment in human naive and memory Treg. CD4+CD25+CD127low naïve and memory Treg were isolated from fresh PBMC and separately stimulated with ?CD3?/CD28 coupled beads (Invitrogen-Dynal) at a 1:10 bead/T cell ratio, treated with or without 10 ng/ml of rhIL-7 (R&D Systems) for 16 hours. qPCR gene expression profiling of CD4+CD25+CD127low naïve and memory Treg obtained from 2 separate donors. Cell lysates were prepared separately from the 2 donors and pooled prior to RNA extraction.
Project description:Microarray used to detail bulk transcriptomic differences between sorted CD4+CD25+CD127lo/- Treg and CD4+CD25-CD127+ Tconv from adult peripheral blood (APB) and cord blood (CB) after a 14 day expansion period.
Project description:Here, we describe the development and application of a new oligonucleotide microarray to analyze human TReg cells. Using whole genome transcription data from human and mouse TReg cells we have compiled a unique microarray consisting of 350 TReg specific genes (Human TReg Chip). Highly purified CD4+CD25+ and CD4+CD25- T cells were isolated from peripheral blood of 11 healthy volunteers and used for expression profiling to highlight the impact of molecular changes. Keywords: cell type comparison
Project description:Changes in Treg function are difficult to quantify due to the lack of Treg-exclusive markers in humans and the complexity of functional experiments. We sorted naive and memory human Tregs and conventional T cells, and identified genes that identify human Tregs regardless of their state of activation. We developed this Treg signature using Affymetrix human genome U133A 2.0 microarrays. To generate Tregs and Tconvs in multiple states of activation, naïve (CD4+CD25hiCD45RA+) and memory (CD4+CD25hiCD45RA-) Tregs, and naïve (CD4+CD25-CD45RA+) and memory (CD4+CD25-CD45RA-) Tconvs were sorted from blood of 7 healthy adults and RNA was isolated ex vivo or after stimulation for 40h, promoting activation-induced FOXP3 in Tconvs. The gene-expression profile of the eight cell subsets was analyzed.
Project description:Neonatal life is marked by rapid antigen exposure, necessitating establishment of peripheral immune tolerance via conversion of naïve CD4+ T cells into regulatory T cells (Tregs). Here, we demonstrate that increased Treg differentiation by naive CD4+ T cells from human cord blood versus adult blood is integrally linked to their unique metabolic profile and their elevated expression of the NADase, CD38. Early life naïve CD4+ T cells demonstrate a metabolic preference for glycolysis, which directly facilitates their Treg generation. We reveal an age-dependent gradient in CD38 levels on naïve CD4+ T cells and show that high CD38 expression contributes to both the glycolytic state and high Treg potential of neonatal CD4+ T cells, effects that are mediated at least in part via the NAD-dependent deacetylase SIRT1. Thus, the early life window for peripheral tolerance in humans is critically enabled by the immunometabolic state of the naïve CD4+ compartment.
Project description:Changes in Treg function are difficult to quantify due to the lack of Treg-exclusive markers in humans and the complexity of functional experiments. We sorted naive and memory human Tregs and conventional T cells, and identified genes that identify human Tregs regardless of their state of activation. We developed this Treg signature using Affymetrix human genome U133A 2.0 microarrays. To generate Tregs and Tconvs in multiple states of activation, naïve (CD4+CD25hiCD45RA+) and memory (CD4+CD25hiCD45RA-) Tregs, and naïve (CD4+CD25-CD45RA+) and memory (CD4+CD25-CD45RA-) Tconvs were sorted from blood of 7 healthy adults and RNA was isolated ex vivo or after stimulation for 40h, promoting activation-induced FOXP3 in Tconvs. The gene-expression profile of the eight cell subsets was analyzed. 7 adult healthy control samples were sorted into 4 subsets: naïve (CD4+CD25hiCD45RA+) and memory (CD4+CD25hiCD45RA-) Tregs, and naïve (CD4+CD25-CD45RA+) and memory (CD4+CD25-CD45RA-) Tconvs. These were used for RNA ex vivo and after 40h stimulation with anti-CD3/CD28 beads to induce an activation phenotype.
