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Cancer Immunology, Immunotherapy: CII

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https://www.readbyqxmd.com/read/28324125/exercise-and-cancer-from-healthy-to-therapeutic
#1
REVIEW
Manja Idorn, Per Thor Straten
Exercise improves functional capacity and patient-reported outcomes across a range of cancer diagnoses. The mechanisms behind this protection have been largely unknown, but exercise-mediated changes in body composition, sex hormone levels, systemic inflammation, and immune cell function have been suggested to play a role. We recently demonstrated that voluntary exercise leads to an influx of immune cells in tumors, and a more than 60% reduction in tumor incidence and growth across several mouse models. Given the common mechanisms of immune cell mobilization in mouse and man during exercise, we hypothesize that this link between exercise and the immune system can be exploited in cancer therapy in particular in combination with immunotherapy...
March 21, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28321480/a-new-peptide-vaccine-ocv-501-in-vitro-pharmacology-and-phase-1-study-in-patients-with-acute-myeloid-leukemia
#2
Yukio Kobayashi, Toru Sakura, Shuichi Miyawaki, Kazuyuki Toga, Shinji Sogo, Yuji Heike
Wilms' tumor 1 (WT1) is a promising target of new immunotherapies for acute myeloid leukemia (AML) as well as for other cancers. OCV-501 is a helper peptide derived from the WT1 protein. OCV-501 induced OCV-501-specific Type 1 T-helper (Th1) responses dose-dependently and stimulated helper activity of the specific Th1 cells in peripheral blood mononuclear cells from healthy donors. OCV-501 also enhanced the increase in WT1-killer peptide-specific cytotoxic T lymphocytes. OCV-501 stimulated the OCV-501-specific Th1 clones in an HLA class-II restricted manner and formed a complex with HLA class-II protein...
March 20, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28315927/hla-dr-expression-in-tumor-epithelium-is-an-independent-prognostic-indicator-in-esophageal-adenocarcinoma-patients
#3
Margaret R Dunne, Adriana J Michielsen, Katie E O'Sullivan, Mary Clare Cathcart, Ronan Feighery, Brendan Doyle, Jenny A Watson, Naoimh J O'Farrell, Narayanasamy Ravi, Elaine Kay, John V Reynolds, Elizabeth J Ryan, Jacintha O'Sullivan
Esophageal adenocarcinoma (EAC) is an aggressive cancer with poor prognosis, and incidence is increasing rapidly in the Western world. Measurement of immune markers has been shown to have prognostic significance in a growing number of cancers, but whether this is true for EAC has yet to be evaluated. This study aimed to characterize HLA-DR expression in the esophagus across the inflammation to cancer progression sequence and to assess the prognostic significance of HLA-DR expression in EAC. Tissue microarrays (TMA) were constructed from esophageal tissue taken from patients at different stages in the cancer progression sequence; normal, esophagitis, Barrett's esophagus (BE), low- and high-grade dysplasia (LGD, HGD) and EAC...
March 18, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28314957/lipoteichoic-acids-from-staphylococcus-aureus-stimulate-proliferation-of-human-non-small-cell-lung-cancer-cells-in-vitro
#4
Katja Hattar, Christian P Reinert, Ulf Sibelius, Mira Y Gökyildirim, Florentine S B Subtil, Jochen Wilhelm, Bastian Eul, Gabriele Dahlem, Friedrich Grimminger, Werner Seeger, Ulrich Grandel
Pulmonary infections are frequent complications in lung cancer and may worsen its outcome and survival. Inflammatory mediators are suspected to promote tumor growth in non-small-cell lung cancer (NSCLC). Hence, bacterial pathogens may affect lung cancer growth by activation of inflammatory signalling. Against this background, we investigated the effect of purified lipoteichoic acids (LTA) of Staphylococcus aureus (S. aureus) on cellular proliferation and liberation of interleukin (IL)-8 in the NSCLC cell lines A549 and H226...
March 17, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28314956/evolution-of-mhc-based-technologies-used-for-detection-of-antigen-responsive-t-cells
#5
REVIEW
Amalie Kai Bentzen, Sine Reker Hadrup
T cell-mediated recognition of peptide-major histocompatibility complex (pMHC) class I and II molecules is crucial for the control of intracellular pathogens and cancer, as well as for stimulation and maintenance of efficient cytotoxic responses. Such interactions may also play a role in the development of autoimmune diseases. Novel insights into this mechanism are crucial to understanding disease development and establishing new treatment strategies. MHC multimers have been used for detection of antigen-responsive T cells since the first report by Altman et al...
March 17, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28299466/development-of-oral-cancer-vaccine-using-recombinant-bifidobacterium-displaying-wilms-tumor-1-protein
#6
Koichi Kitagawa, Tsugumi Oda, Hiroki Saito, Ayame Araki, Reina Gonoi, Katsumi Shigemura, Yoshiko Hashii, Takane Katayama, Masato Fujisawa, Toshiro Shirakawa
Several types of vaccine-delivering tumor-associated antigens (TAAs) have been developed in basic and clinical research. Wilms' tumor 1 (WT1), identified as a gene responsible for pediatric renal neoplasm, is one of the most promising TAA for cancer immunotherapy. Peptide and dendritic cell-based WT1 cancer vaccines showed some therapeutic efficacy in clinical and pre-clinical studies but as yet no oral WT1 vaccine can be administrated in a simple and easy way. In the present study, we constructed a novel oral cancer vaccine using a recombinant Bifidobacterium longum displaying WT1 protein...
March 15, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28289861/expression-patterns-of-programmed-death-ligand-1-in-esophageal-adenocarcinomas-comparison-between-primary-tumors-and-metastases
#7
Bastian Dislich, Alexandra Stein, Christian A Seiler, Dino Kröll, Sabina Berezowska, Inti Zlobec, José Galvan, Julia Slotta-Huspenina, Axel Walch, Rupert Langer
Expression analysis of programmed death-ligand 1 (PD-L1) may be helpful in guiding clinical decisions for immune checkpoint inhibition therapy, but testing by immunohistochemistry may be hampered by heterogeneous staining patterns within tumors and expression changes during metastatic course. PD-L1 expression (clone SP142) was investigated in esophageal adenocarcinomas using tissue microarrays (TMA) from 112 primary resected tumors, preoperative biopsies and full slide sections from a subset of these cases (n = 24), corresponding lymph node (n = 55) and distant metastases (n = 17)...
March 13, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28289860/the-pd-l1-pd-1-pathway-promotes-dysfunction-but-not-exhaustion-in-tumor-responding-t-cells-from-pleural-effusions-in-lung-cancer-patients
#8
Heriberto Prado-Garcia, Susana Romero-Garcia, Alejandra Puerto-Aquino, Uriel Rumbo-Nava
Malignant pleural effusions are frequent in patients with advanced stages of lung cancer and are commonly infiltrated by lymphocytes and tumor cells. CD8+ T cells from these effusions have reduced effector functions. The programmed death receptor 1(PD-1)/programmed death ligand 1 (PD-L1) pathway is involved in T-cell exhaustion, and it might be responsible for T-cell dysfunction in lung cancer patients. Here, we show that PD-L1 is expressed on tumor cell samples from malignant effusions, on lung cancer cell lines, and, interestingly, on MRC-5 lung fibroblasts...
March 13, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28285319/in-memory-of-professor-enrico-mihich-editor-in-chief-of-cancer-immunology-immunotherapy-1982-2012
#9
EDITORIAL
Graham Pawelec, Suzanne Ostrand-Rosenberg
No abstract text is available yet for this article.
March 11, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28283697/phenotype-and-function-of-tumor-associated-neutrophils-and-their-subsets-in-early-stage-human-lung-cancer
#10
REVIEW
Evgeniy B Eruslanov
Neutrophils accumulate in many types of human and murine tumors and represent a significant portion of tumor-infiltrating myeloid cells. Our current understanding of the role of neutrophils in tumor development has depended primarily on murine models of cancer. However, there are crucial species differences in the evolution of tumors, genetic diversity, immune and inflammatory responses, and intrinsic biology of neutrophils that might have a profound impact on the tumor development and function of neutrophils in mouse versus human tumors...
March 10, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28283696/myeloid-cells-in-circulation-and-tumor-microenvironment-of-breast-cancer-patients
#11
Salman M Toor, Azharuddin Sajid Syed Khaja, Haytham El Salhat, Issam Faour, Jihad Kanbar, Asif A Quadri, Mohamed Albashir, Eyad Elkord
Pathological conditions including cancers lead to accumulation of a morphological mixture of highly immunosuppressive cells termed as myeloid-derived suppressor cells (MDSC). The lack of conclusive markers to identify human MDSC, due to their heterogeneous nature and close phenotypical and functional proximity with other cell subsets, made it challenging to identify these cells. Nevertheless, expansion of MDSC has been reported in periphery and tumor microenvironment of various cancers. The majority of studies on breast cancers were performed on murine models and hence limited literature is available on the relation of MDSC accumulation with clinical settings in breast cancer patients...
March 10, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28280853/murine-th17-cells-utilize-il-2-receptor-gamma-chain-cytokines-but-are-resistant-to-cytokine-withdrawal-induced-apoptosis
#12
Daniel J Neitzke, Jacob S Bowers, Kristina Andrijauskaite, Nathaniel S O'Connell, Elizabeth Garrett-Mayer, John Wrangle, Zihai Li, Chrystal M Paulos, David J Cole, Mark P Rubinstein
Adoptive cellular therapy (ACT) with the Th17 subset of CD4(+) T cells can cure established melanoma in preclinical models and holds promise for treating human cancer. However, little is known about the growth factors necessary for optimal engraftment and anti-tumor activity of Th17 cells. Due to the central role of IL-2 receptor gamma chain (IL2Rγ-chain) cytokines (IL-2, IL-7, and IL-15) in the activity and persistence of many T cell subsets after adoptive transfer, we hypothesized that these cytokines are important for Th17 cells...
March 9, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28280852/tantigen-a-comprehensive-database-of-tumor-t-cell-antigens
#13
Lars Rønn Olsen, Songsak Tongchusak, Honghuang Lin, Ellis L Reinherz, Vladimir Brusic, Guang Lan Zhang
Tumor T cell antigens are both diagnostically and therapeutically valuable molecules. A large number of new peptides are examined as potential tumor epitopes each year, yet there is no infrastructure for storing and accessing the results of these experiments. We have retroactively cataloged more than 1000 tumor peptides from 368 different proteins, and implemented a web-accessible infrastructure for storing and accessing these experimental results. All peptides in TANTIGEN are labeled as one of the four categories: (1) peptides measured in vitro to bind the HLA, but not reported to elicit either in vivo or in vitro T cell response, (2) peptides found to bind the HLA and to elicit an in vitro T cell response, (3) peptides shown to elicit in vivo tumor rejection, and (4) peptides processed and naturally presented as defined by physical detection...
March 9, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28251274/mechanisms-of-efficacy-in-cancer-immunotherapy-14th-annual-meeting-of-the-association-for-cancer-immunotherapy-cimt-mainz-germany-may-10-12-2016
#14
Judith Theelen, Jennifer Braun, Helen Hörzer, Bjoern-Philipp Kloke, Martina Ott, Irene Pizzitola, Uwe Schirmer, Matthias Miller
No abstract text is available yet for this article.
March 1, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28246881/novel-b7-h4-mediated-crosstalk-between-human-non-hodgkin-lymphoma-cells-and-tumor-associated-macrophages-leads-to-immune-evasion-via-secretion-of-il-6-and-il-10
#15
Fengyuan Che, Xueyuan Heng, Haiyan Zhang, Quanping Su, Baoxue Zhang, Yanying Chen, Zhaohong Zhang, Yifeng Du, Lijuan Wang
Non-Hodgkin lymphoma (NHL) is an incurable lymphoproliferative cancer, and patients with NHL have a poor prognosis. The present study explored the regulatory mechanism of expression and possible roles of the immunosuppressive B7-H4 molecule in human NHL. For functional studies, NHL-reactive T cell lines were generated via the isolation of allogeneic CD3(+) T cells from healthy donors and repeated in vitro stimulation with irradiated NHL cells isolated from patients. B7-H4 was found to be distributed in NHL cells and tissues, and its surface protein expression levels were further upregulated by the incubation of NHL cells with interleukin (IL)-6, IL-10, or interferon-γ...
February 28, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28243692/intratumoral-administration-of-cgamp-transiently-accumulates-potent-macrophages-for-anti-tumor-immunity-at-a-mouse-tumor-site
#16
Takayuki Ohkuri, Akemi Kosaka, Kei Ishibashi, Takumi Kumai, Yui Hirata, Kenzo Ohara, Toshihiro Nagato, Kensuke Oikawa, Naoko Aoki, Yasuaki Harabuchi, Esteban Celis, Hiroya Kobayashi
Stimulator of IFN genes (STING) spontaneously contributes to anti-tumor immunity by inducing type I interferons (IFNs) following sensing of tumor-derived genomic DNAs in the tumor-bearing host. Although direct injection of STING ligands such as cyclic diguanylate monophosphate (c-di-GMP) and cyclic [G(2',5')pA(3',5')p] (cGAMP) into the tumor microenvironment exerts anti-tumor effects through strong induction of type I IFNs and activation of innate and adaptive immunity, the precise events caused by STING in the tumor microenvironment remain to be elucidated...
February 27, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28239749/interleukin-21-inhibits-cancer-mediated-foxp3-induction-in-na%C3%A3-ve-human-cd4-t-cells
#17
Vinodh Kannappan, Kate Butcher, Malgorzata Trela, Iain Nicholl, Weiguang Wang, Kesley Attridge
IL-21 is known to promote anti-tumour immunity due to its ability to promote T cell responses and counteract Treg-mediated suppression. It has also been shown to limit Treg frequencies during tumour-antigen stimulations. However, whether this represents inhibition of FOXP3 induction in naïve CD4 T cells or curtailed expansion of natural Treg remains unclear. Moreover, whether this effect is maintained in an environment of tumour-derived immunosuppressive factors is not known. Here, we show that in the context of a number of cancers, naïve CD45RA+ CD4 T cells are induced to express high levels of FOXP3, and that FOXP3 expression correlates with inhibition of T cell proliferation...
February 27, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28238174/combining-talimogene-laherparepvec-with-immunotherapies-in-melanoma-and-other-solid-tumors
#18
REVIEW
Reinhard Dummer, Christoph Hoeller, Isabella Pezzani Gruter, Olivier Michielin
Talimogene laherparepvec is a first-in-class intralesional oncolytic immunotherapy. In a recent Phase III trial (OPTiM), talimogene laherparepvec significantly improved durable response rate compared with subcutaneous granulocyte-macrophage colony-stimulating factor (GM-CSF). Overall response rate was also higher in the talimogene laherparepvec arm, and the greatest efficacy was demonstrated in patients with earlier-stage (IIIB, IIIC, or IVM1a) melanoma. Talimogene laherparepvec was well tolerated, with the majority (89%) of adverse events being grade 1 or 2...
February 25, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28236118/expression-of-vista-correlated-with-immunosuppression-and-synergized-with-cd8-to-predict-survival-in-human-oral-squamous-cell-carcinoma
#19
Lei Wu, Wei-Wei Deng, Cong-Fa Huang, Lin-Lin Bu, Guang-Tao Yu, Liang Mao, Wen-Feng Zhang, Bing Liu, Zhi-Jun Sun
V-domain Ig suppressor of T cell activation (VISTA), a novel immune checkpoint regulatory molecule, suppresses T cell mediated immune responses. The aim of the present study was to profile the immunological expression, clinical significance and correlation of VISTA in human oral squamous cell carcinoma (OSCC). Human tissue microarrays, containing 165 primary OSCCs, 48 oral epithelial dysplasias and 43 normal oral mucosae, were applied to investigate the expression levels of VISTA, CD8, cytotoxic T lymphocyte-associated antigen 4 (CTLA-4), programmed death ligand 1 (PD-L1), PI3Kα p110, IL13Rα2, phospho-STAT3 at tyrosine 705 (p-STAT3) and myeloid-derived suppressor cell (MDSC) markers (CD11b and CD33) by immunohistochemistry and digital pathology analysis...
February 24, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28229217/foxo3-estrogen-receptor-alpha-and-androgen-receptor-impact-tumor-growth-rate-and-infiltration-of-dendritic-cell-subsets-differentially-between-male-and-female-mice
#20
Matthew G Thompson, Daniel S Peiffer, Michelle Larson, Flor Navarro, Stephanie K Watkins
Tumors evade immune recognition and destruction in many ways including the creation of an immune-suppressive tumor microenvironment (TME). Dendritic cells (DC) that infiltrate the TME are tolerogenic, and suppress effector T cells and anti-tumor activity. Previous reports demonstrated that a key regulator of tolerance in DC is the transcription factor FOXO3. Gender disparity has been studied in cancer in relation to incidence, aggressiveness, and prognosis. Few studies have touched on the importance in relation to impact on the immune system...
February 22, 2017: Cancer Immunology, Immunotherapy: CII
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