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PMID |
Sentence |
1 |
9043947
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We examined the effects of gp120 on TCR-CD3-induced phosphorylation and activation of the src-type protein tyrosine kinases (PTK), fyn and lck. gp120 caused minimal changes in lck phosphorylation or lck enzymatic activity, but preincubation of Jurkat cells with gp120 for 20 min strongly inhibited TCR-CD3-mediated phosphorylation and activation of lck and fyn, as well as phosphorylation of CD3 zeta.
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2 |
12894571
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These problems emanate from the following mechanisms that the tumor cells are employing to avoid detection and destruction by the immune system: (i) Down-regulation of HLA class I expression on the surface of tumor cells; (ii) Down-regulation of tumor antigen expression or selection of negative tumor variants; (iii) Expression of naturally occurring altered peptide ligands by tumor cells; (iv) Lack of costimulatory molecules on tumors cells; (v) Production of immunosuppressive cytokines, such as TGF-beta and IL-10; (vi) Induction of lymphocyte apoptosis by tumor cells using the Fas/Fas L pathway; (vii) Down-regulation or absence of CD3 zeta (zeta) transcripts or protein in tumor-infiltrating lymphocytes (TIL), and others.
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3 |
15655551
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Using cultured T cells, 'exosomes' were evaluated for suppression of CD3-zeta and JAK 3 expressions and induction of apoptosis, measured by DNA fragmentation.
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4 |
15655551
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'Exosomes' expressed class I MHC, placental alkaline phosphatase, B23/nucleophosmin, and FasL.
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5 |
15655551
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'Exosomes' suppressed expression of T-cell activation signalling components, CD3-zeta and JAK 3 and induced apoptosis.
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6 |
15655551
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Using cultured T cells, 'exosomes' were evaluated for suppression of CD3-zeta and JAK 3 expressions and induction of apoptosis, measured by DNA fragmentation.
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7 |
15655551
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'Exosomes' expressed class I MHC, placental alkaline phosphatase, B23/nucleophosmin, and FasL.
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8 |
15655551
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'Exosomes' suppressed expression of T-cell activation signalling components, CD3-zeta and JAK 3 and induced apoptosis.
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9 |
17052145
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In this study, we retrovirally transduce human primary T cells with a cDNA encoding the extracellular domain of FcRI linked to the hinge and transmembrane domains of FcRI and the cytoplasmic domains of CD28 and T cell receptor zeta chain (FcRI-CD28-zeta).
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10 |
21796616
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However, synthetic T-cell vaccines composed of Melan-A/MART-1 peptide, CpG and IFA can induce high frequencies of tumor-specific CD8 T-cells in PBMC of melanoma patients.
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11 |
21796616
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The production of multiple cytokines (IFNγ, TNFα, IL-2) and upregulation of LAMP-1 (CD107a) by tumor (Melan-A/MART-1) specific T-cells was comparable to virus (EBV-BMLF1) specific CD8 T-cells.
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12 |
21796616
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Furthermore, phosphorylation of STAT1, STAT5 and ERK1/2, and expression of CD3 zeta chain were similar in tumor- and virus-specific T-cells, demonstrating functional signaling pathways.
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