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Treg HNC

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https://www.readbyqxmd.com/read/29048671/adoptive-immunotherapy-combined-with-fp-treatment-for-head-and-neck-cancer-an-in%C3%A2-vitro-study
#1
Mayako Nishio-Nagai, Susumu Suzuki, Kazuhiro Yoshikawa, Ryuzo Ueda, Yoshiaki Kazaoka
FP treatment, which combines 5-fluorouracil (5-FU) and cisplatin (CDDP) chemotherapy, is widely used for treatment of advanced head and neck cancer (HNC). It has been suggested that these drugs cause immunomodulation in the cancer microenvironment, for example, downregulation of immunosuppressive cells such as regulatory T-cells (Tregs) and myeloid-derived suppressive cells (MDSCs), activating dendritic cells (DCs), and upregulation of tumor antigens and major histocompatibility complex (MHC) molecules in cancer cells leads to enhancement of cancer immunity, which is important in cancer treatment, as well as providing a direct killing effect...
October 2, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28400428/suppression-of-lymphocyte-functions-by-plasma-exosomes-correlates-with-disease-activity-in-patients-with-head-and-neck-cancer
#2
Sonja Ludwig, Theofanis Floros, Marie-Nicole Theodoraki, Chang-Sook Hong, Edwin K Jackson, Stephan Lang, Theresa L Whiteside
Purpose: Head and neck cancers (HNCs) often induce profound immunosuppression, which contributes to disease progression and interferes with immune-based therapies. Body fluids of patients with HNC are enriched in exosomes potentially engaged in negative regulation of antitumor immune responses. The presence and content of exosomes derived from plasma of patients with HNC are evaluated for the ability to induce immune dysfunction and influence disease activity.Experimental Design: Exosomes were isolated by size-exclusion chromatography from plasma of 38 patients with HNC and 14 healthy donors...
August 15, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/27815390/kv1-3-channels-mark-functionally-competent-cd8-tumor-infiltrating-lymphocytes-in-head-and-neck-cancer
#3
Ameet A Chimote, Peter Hajdu, Alexandros M Sfyris, Brittany N Gleich, Trisha Wise-Draper, Keith A Casper, Laura Conforti
Tumor-infiltrating lymphocytes (TIL) are potent mediators of an antitumor response. However, their function is attenuated in solid tumors. CD8(+) T-cell effector functions, such as cytokine and granzyme production, depend on cytoplasmic Ca(2+), which is controlled by ion channels. In particular, Kv1.3 channels regulate the membrane potential and Ca(2+) influx in human effector memory T (TEM) cells. In this study, we assessed the contribution of reduced Kv1.3 and Ca(2+) flux on TIL effector function in head and neck cancer (HNC)...
January 1, 2017: Cancer Research
https://www.readbyqxmd.com/read/15959774/immune-responses-to-p53-in-patients-with-cancer-enrichment-in-tetramer-p53-peptide-specific-t-cells-and-regulatory-t-cells-at-tumor-sites
#4
Andreas E Albers, Robert L Ferris, Grace G Kim, Kazuaki Chikamatsu, Albert B DeLeo, Theresa L Whiteside
OBJECTIVE: A majority of human cancers, including head and neck cancer (HNC), "overexpress" p53. Although T cells specific for wild-type (wt) sequence p53 peptides are detectable in the peripheral blood of patients with HNC, it is unknown whether such T cells accumulate in tumor-involved tissues. Also, the localization of "regulatory" T cells (Treg) to tumor sites in HNC has not been investigated to date. METHODS: Tumor infiltrating lymphocytes (TIL), tumor-involved or non-involved lymph node lymphocytes (LNL) and peripheral blood mononuclear cells (PBMC) were obtained from 24 HLA-A2...
November 2005: Cancer Immunology, Immunotherapy: CII
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