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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Bluteau, Dominique Bismuth, Georges Mokrani, M'barka Mami-Chouaib, Fathia Klibi, Jihène |
| Description | Author Affiliation: Mokrani M ( INSERM U753, F-94805 Villejuif, France) |
| Abstract | The interaction of integrin E(CD103)ß7, often expressed on tumor-infiltrating T lymphocytes, with its cognate ligand, the epithelial cell marker E-cadherin on tumor cells, plays a major role in antitumor CTL responses. CD103 is induced on CD8 T cells upon TCR engagement and exposure to TGF-ß1, abundant within the tumor microenvironment. However, the transcriptional mechanisms underlying the cooperative role of these two signaling pathways in inducing CD103 expression in CD8 T lymphocytes remain unknown. Using a human CTL system model based on a CD8(+)/CD103(-) T cell clone specific of a lung tumor-associated Ag, we demonstrated that the transcription factors Smad2/3 and NFAT-1 are two critical regulators of this process. We also identified promoter and enhancer elements of the human ITGAE gene, encoding CD103, involved in its induction by these transcriptional regulators. Overall, our results explain how TGF-ß1 can participate in CD103 expression on locally TCR-engaged Ag-specific CD8 T cells, thus contributing to antitumor CTL responses and cancer cell destruction. |
| ISSN | 00221767 |
| e-ISSN | 15506606 |
| Journal | The Journal of Immunology |
| Issue Number | 5 |
| Volume Number | 192 |
| Language | English |
| Publisher | The American Association of Immunologists |
| Publisher Date | 2014-03-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Antigens, Cd Immunology Antigens, Neoplasm Cd8-positive T-lymphocytes Integrin Alpha Chains Lung Neoplasms Nfatc Transcription Factors Smad2 Protein Smad3 Protein Biosynthesis Genetics Metabolism Pathology Hek293 Cells Jurkat Cells Receptors, Antigen, T-cell Response Elements Signal Transduction Transforming Growth Factor Beta1 Research Support, Non-u.s. Gov't Discipline Immunology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Immunology and Allergy Immunology |
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