total cd3 cd4 t cell fractions (ATCC)
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Total Cd3 Cd4 T Cell Fractions, supplied by ATCC, used in various techniques. Bioz Stars score: 95/100, based on 806 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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1) Product Images from "Tumor-Derived Microvesicles Induce, Expand and Up-Regulate Biological Activities of Human Regulatory T Cells (Treg)"
Article Title: Tumor-Derived Microvesicles Induce, Expand and Up-Regulate Biological Activities of Human Regulatory T Cells (Treg)
Journal: PLoS ONE
doi: 10.1371/journal.pone.0011469
Figure Legend Snippet: ( A ) Purified CD3 + CD4 + T cells were labeled with CFSE and cultured as described in ± TMV or DC-derived MV (5 µg/mL). On days 3, 5 and 8, the frequency of CD4 + CD25 + FOXP3 + Treg among proliferating T cells was determined by flow cytometry. The data (means ± SD) represent three independent experiments (*p<0.01). ( B ) Proliferating CD3 + CD4 + T cells (squares) were tested for co-expression of CD25 in a representative co-culture ± TMV. A higher proportion of proliferating CD4 + T cells expressed CD25 in the co-culture with TMV than without TMV. ( C ) The proliferating CD4 + CD25 + T cells in the co-cultures with TMV were evaluated for the frequency of FOXP3 + T cells upon gating on the CD4 + CD25 high subset (see box). Over 90% of these cells also expressed intracellular FOXP3. Data are representative for one out of 6 cultures tested.
Techniques Used: Purification, Labeling, Cell Culture, Derivative Assay, Flow Cytometry, Expressing, Co-Culture Assay
Figure Legend Snippet: ( A ) Flow cytometry analysis of TGF-β1 and IL-10 expression on TMV purified from OVCAR-3 SN and coated onto latex beads. ( B ) CD4 + CD25 high FOXP3 + T cells were cultured with OKT3, anti-CD28 and IL-2 (150 IU/mL) +/− TMV for 72 h at 37°C in the presence of Golgistop and then stained for CD4, CD3, CD25 and intracellular TGF-β1 and IL-10. Expression of both cytokines was up-regulated in the presence of TMV (p<0.05). ( C ) SMAD2/3 and STAT3 phosphorylation in Treg before and after exposure to TMV. Representative results are from one of three independent experiments for A , B and C . ( D ) The percentage of CD4 + CD25 high FOXP3 + T cells increased among CD4 + CD25 + T cells cultured in the presence of TMV but not DC-derived MV. Neutralizing anti-TGF-β1 and/or anti-IL-10 Abs inhibited the induction of Treg by TMV. Non-blocking IgG isotype control Abs were used as controls. Asterisks indicate decreases (p<0.05) in Treg percentages in the presence of neutralizing Abs. Results are means ± SD of three independent experiments.
Techniques Used: Flow Cytometry, Expressing, Purification, Cell Culture, Staining, Derivative Assay, Blocking Assay
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