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https://www.readbyqxmd.com/read/28649877/retrospective-cohort-study-and-biobanking-of-patients-treated-for-hemangioma-in-childhood-telomeres-as-biomarker-of-aging-and-radiation-exposure
#1
Monika Frenzel, Michelle Ricoul, Mohamed Amine Benadjaoud, Marion Bellamy, Aude Lenain, Nadia Haddy, Ibrahima Diallo, Christine Mateus, Florent de Vathaire, Laure Sabatier
PURPOSE: Cohorts allowing joint epidemiological and biological analyses are essential for radiation risk assessment. The French Hemangioma Cohort (FHC), studied within the European project EpiRadBio, is one of the rare cohorts suitable for studying the effect of low dose radiation exposure (<100 mGy at organs), with a long-term follow-up. This highly homogeneous cohort consists of healthy individuals belonging to a normal population, except for the presence of skin hemangioma (age at exposure: between 6 months and 3 years of age)...
June 26, 2017: International Journal of Radiation Biology
https://www.readbyqxmd.com/read/28648905/antibodies-against-immune-checkpoint-molecules-restore-functions-of-tumor-infiltrating-t-cells-in-hepatocellular-carcinomas
#2
Guoying Zhou, Dave Sprengers, Patrick P C Boor, Michail Doukas, Hannah Schutz, Shanta Mancham, Alexander Pedroza-Gonzalez, Wojciech G Polak, Jeroen de Jonge, Marcia Gaspersz, Haidong Dong, Kris Thielemans, Qiuwei Pan, Jan N M IJzermans, Marco J Bruno, Jaap Kwekkeboom
BACKGROUND & AIMS: Ligand binding to inhibitory receptors on immune cells, such as programmed cell death 1 (PD-1) and cytotoxic T-lymphocyte associated protein 4 (CTLA4), downregulates the T-cell-mediated immune response (called immune checkpoints). Antibodies that block these receptors increase anti-tumor immunity in patients with melanoma, non-small cell lung cancer, and renal cell cancer. Tumor-infiltrating CD4(+) and CD8(+) T cells in patients with hepatocellular carcinoma (HCC) have been found to be functionally compromised...
June 22, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28648732/-adoptive-transfer-of-t-lymphocytes
#3
H Vié, B Clémenceau
Within a few years, the success of treatments based on the use of T-cells armed with a chimeric T-receptor for the CD19 molecule (CAR-T CD19) has revolutionized the perception of adoptive transfer approaches. The levels of responses observed in acute leukemias, of the order of 70-90 % are indeed unprecedented. The medical and financial enthusiasm aroused by these results has led to the current situation where more than 300 clinical trials are under way, against some thirty different antigens. This enthusiasm, well justified by the first successes, must however be tempered by the difficulties associated with the use of these cells...
June 22, 2017: Transfusion Clinique et Biologique: Journal de la Société Française de Transfusion Sanguine
https://www.readbyqxmd.com/read/28640256/microrna-26a-cyclin-dependent-kinase-5-axis-controls-proliferation-apoptosis-and-in-vivo-tumor-growth-of-diffuse-large-b-cell-lymphoma-cell-lines
#4
Floriana Maria Farina, Alessandra Inguscio, Paolo Kunderfranco, Alice Cortesi, Leonardo Elia, Manuela Quintavalle
Diffuse large B-cell lymphoma (DLBCL) is the most frequent type of non-Hodgkin lymphoma. Despite a favorable therapeutic response to first-line chemo-immunotherapy, still 30-40% of patients is refractory, or relapse after this treatment. Thus, alternative strategies must be sought. Previous studies have indicated that cyclin-dependent kinase 5 (CDK5), a serine/threonine protein kinase, is involved in tumor development and progression, and it may represent a potential therapeutic target. However, its role in modulating DLBCL growth and progression remains largely unexplored...
June 22, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28637474/arsenic-trioxide-inhibits-ebv-reactivation-and-promotes-cell-death-in-ebv-positive-lymphoma-cells
#5
Qinyan Yin, Mark Sides, Christopher H Parsons, Erik K Flemington, Joseph A Lasky
BACKGROUND: Epstein-Barr Virus (EBV) is associated with hematopoietic malignancies, such as Burkitt's lymphoma, post-transplantation lymphoproliferative disorder, and diffuse large B-cell lymphoma. The current approach for EBV-associated lymphoma involves chemotherapy to eradicate cancer cells, however, normal cells may be injured and organ dysfunction may occur with currently employed regimens. This research is focused on employing arsenic trioxide (ATO) as EBV-specific cancer therapy takes advantage of the fact the EBV resides within the malignant cells...
June 21, 2017: Virology Journal
https://www.readbyqxmd.com/read/28629331/depletion-of-p21-activated-kinase-1-up-regulates-the-immune-system-of-apc-%C3%A2-14-mice-and-inhibits-intestinal-tumorigenesis
#6
Nhi Huynh, Kai Wang, Mildred Yim, Chelsea J Dumesny, Mauro S Sandrin, Graham S Baldwin, Mehrdad Nikfarjam, Hong He
BACKGROUND: P21-activated kinase 1 (PAK1) stimulates growth and metastasis of colorectal cancer (CRC) through activation of multiple signalling pathways. Up-regulation of CRC stem cell markers by PAK1 also contributes to the resistance of CRC to 5-fluorouracil. The aim of this study was to investigate the effect of PAK1 depletion and inhibition on the immune system and on intestinal tumour formation in APC(∆14/+) mice. METHODS: The PAK1 KO APC(∆14/+) mice were generated by cross-breeding of PAK1 KO mice with APC(∆14/+) mice...
June 19, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28626801/b-lymphocytes-and-cancer-a-love-hate-relationship
#7
Grace J Yuen, Ezana Demissie, Shiv Pillai
No abstract text is available yet for this article.
December 2016: Trends in Cancer
https://www.readbyqxmd.com/read/28624137/effect-of-tlr-ligands-co-encapsulated-with-multiepitopic-antigen-in-nanoliposomes-targeted-to-human-dcs-via-fc-receptor-for-cancer-vaccines
#8
Felix Rueda, Christina Eich, Begoña Cordobilla, Pere Domingo, Gerardo Acosta, Fernando Albericio, Luis J Cruz, Joan C Domingo
Nanoliposomes (NLs) hold promise as new highly specific nanomedicine for anti-tumor vaccines, since they could be targeted to specific receptors on dendritic cell (DC) to induce maturation and activation and increase the anti-tumor immune response. Here we studied a NLs formulation targeted or not to FcR (the receptor for the IgG Fc fragment) for the treatment of androgen-responsive prostate cancer. Luteinizing-hormone-releasing hormone (LHRH) peptide (B- and T-cell epitopes), in tandem with a tetanus toxoid T-helper epitope (830-844 region) and several TLR (Toll-Like Receptor) ligands as adjuvants were co-encapsulated...
June 10, 2017: Immunobiology
https://www.readbyqxmd.com/read/28620375/comparative-gene-expression-analysis-of-lymphocytes-treated-with-exosomes-derived-from-ovarian-cancer-and-ovarian-cysts
#9
Yujuan Li, Yang Yang, Aiwei Xiong, Xiaoqin Wu, Jingyan Xie, Suping Han, Shuli Zhao
Cancer cells employ many strategies to evade immune defense and to facilitate tumor growth and angiogenesis. As a novel mode of intercellular communication, cancer-derived exosomes contribute to the recruitment and mediation of lymphocytes within the tumor environment. However, the mechanisms and key molecules mediating the effect of exosomes on lymphocytes are unclear. We treated healthy peripheral blood lymphocytes with exosomes from ovarian cancer and ovarian cysts and screened for differentially expressed genes using the RT(2) Profiler Cancer Inflammation and Immunity Crosstalk PCR Array...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28619711/igfbp7-deletion-promotes-hepatocellular-carcinoma
#10
Maaged Akiel, Chunqing Guo, Xia Li, Devaraja Rajasekaran, Rachel G Mendoza, Chadia L Robertson, Nidhi Jariwala, Fang Yuan, Mark A Subler, Jolene Windle, Dawn K Garcia, Zhao Lai, Hung-I Harry Chen, Yidong Chen, Shah Giashuddin, Paul B Fisher, Xiang-Yang Wang, Devanand Sarkar
Activation of IGF signaling is a major oncogenic event in diverse cancers, including hepatocellular carcinoma (HCC). In this setting, the insulin-like growth factor binding protein IGFBP7 inhibits IGF signaling by binding the IGF-1 receptor (IGF-1R), functioning as a candidate tumor suppressor. IGFBP7 abrogates tumors by inhibiting angiogenesis and inducing cancer-specific senescence and apoptosis. Here we report that Igfbp7-deficient mice exhibit constitutively active IGF signaling, presenting with pro-inflammatory and immunosuppressive microenvironments and spontaneous liver and lung tumors occurring with increased incidence in carcinogen-treated subjects...
June 15, 2017: Cancer Research
https://www.readbyqxmd.com/read/28614802/mitochondrial-dysregulation-and-glycolytic-insufficiency-functionally-impair-cd8-t-cells-infiltrating-human-renal-cell-carcinoma
#11
Peter J Siska, Kathryn E Beckermann, Frank M Mason, Gabriela Andrejeva, Allison R Greenplate, Adam B Sendor, Yun-Chen J Chiang, Armando L Corona, Lelisa F Gemta, Benjamin G Vincent, Richard C Wang, Bumki Kim, Jiyong Hong, Chiu-Lan Chen, Timothy N Bullock, Jonathan M Irish, W Kimryn Rathmell, Jeffrey C Rathmell
Cancer cells can inhibit effector T cells (Teff) through both immunomodulatory receptors and the impact of cancer metabolism on the tumor microenvironment. Indeed, Teff require high rates of glucose metabolism, and consumption of essential nutrients or generation of waste products by tumor cells may impede essential T cell metabolic pathways. Clear cell renal cell carcinoma (ccRCC) is characterized by loss of the tumor suppressor von Hippel-Lindau (VHL) and altered cancer cell metabolism. Here, we assessed how ccRCC influences the metabolism and activation of primary patient ccRCC tumor infiltrating lymphocytes (TIL)...
June 15, 2017: JCI Insight
https://www.readbyqxmd.com/read/28612110/differential-killing-and-radio-modifying-effects-of-iodoacetate-in-mammalian-normal-and-cancer-cells
#12
Usha Yadav, K B Anjaria, Rajesha Nairy, K B Shirsath, Utkarsha N Desai, Rajesh K Chaurasia, Nagesh N Bhat, B K Sapra
To explore possible applications of iodoacetate (IA), a glycolytic inhibitor, in cancer treatment, we screened its cytotoxicity and radioprotective/sensitizing efficacy in three different mammalian cell lines; A549 (human lung carcinoma), MCF7 (human mammary cancer), a non-cancerous CHO (Chinese hamster ovary) cells and human lymphocytes. Experiments were carried out using IA concentrations ranging from 0.01 to 2.5 µg/ml, with or without (60)Coγ-radiation. In the outcomes, IA was found to exhibit higher toxicity in the cancer cells, whereas it was non-toxic/marginally toxic to the non-cancerous cells...
June 13, 2017: Radiation and Environmental Biophysics
https://www.readbyqxmd.com/read/28611304/immune-profiling-of-nf1-associated-tumors-reveals-histologic-subtype-distinctions-and-heterogeneity-implications-for-immunotherapy
#13
Kellie B Haworth, Michael A Arnold, Christopher R Pierson, Kwangmin Choi, Nicholas D Yeager, Nancy Ratner, Ryan D Roberts, Jonathan L Finlay, Timothy P Cripe
Successful treatment of neurofibromatosis type 1 (NF1)-associated tumors poses a significant clinical challenge. While the primary underlying genetic defect driving RAS signaling is well described, recent evidence suggests immune dysfunction contributes to tumor pathogenesis and malignant transformation. As immunologic characterizations, prognostic and predictive of immunotherapeutic clinical response in other cancers, are not fully described for benign and malignant NF1-related tumors, we sought to define their immunologic profiles...
May 30, 2017: Oncotarget
https://www.readbyqxmd.com/read/28611201/relationship-of-the-breast-ductal-carcinoma-in-situ-immune-microenvironment-with-clinico-pathological-and-genetic-features
#14
Shona Hendry, Jia-Min B Pang, David Byrne, Sunil R Lakhani, Margaret C Cummings, Ian G Campbell, G Bruce Mann, Kylie L Gorringe, Stephen B Fox
The immune microenvironment of breast ductal carcinoma in situ (DCIS) has yet to be fully explored, and the relationship of immune cells to genetic features of DCIS is unknown. <br /><br />Experimental Design: We quantified tumour associated lymphocytes (TILs) and evaluated PD-L1 protein levels by immunohistochemistry in a cohort of pure DCIS (138 and 79 cases respectively), some of which had copy number (n=55) and mutation data (n=20). <br /><br />Results: TILs were identified in the stroma surrounding DCIS (119/138, 86%) and present at a median TIL score of 5% (range 0-90%)...
June 13, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28608409/neoadjuvant-chemoradiotherapy-of-pancreatic-cancer-induces-a-favorable-immunogenic-tumor-microenvironment-associated-with-increased-major-histocompatibility-complex-class-i-related-chain-a-b-expression
#15
Takashi Murakami, Yuki Homma, Ryusei Matsuyama, Ryutaro Mori, Kentaro Miyake, Yusaku Tanaka, Kanechika Den, Yoji Nagashima, Masatoshi Nakazawa, Yukihiko Hiroshima, Michio Ueda, Kuniya Tanaka, Robert M Hoffman, Michael Bouvet, Itaru Endo
BACKGROUND: Damage-associated molecular patterns (DAMPs) are related to immune responses in malignant tumors including tumor-infiltrating lymphocytes (TILs). The aim of the present study was to determine the relationship between expression of components of DAMPs and TILs in pancreatic cancer patients who underwent neoadjuvant chemoradiotherapy (NACRT) versus those who did not. METHODS: NACRT was administered to 51 patients with borderline-resectable pancreatic cancer and not to 33 patients with resectable pancreatic cancer...
June 12, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28607807/immunohistochemical-evaluation-of-vitamin-d-receptor-vdr-expression-in-cutaneous-melanoma-tissues-and-four-vdr-gene-polymorphisms
#16
Francesco La Marra, Giuseppe Stinco, Cinzia Buligan, Giovanni Chiriacò, Diego Serraino, Carla Di Loreto, Sabina Cauci
OBJECTIVE: : Vitamin D receptor (VDR) mediates vitamin D activity. We examined whether VDR expression in excised melanoma tissues is associated with VDR gene (VDR) polymorphisms. METHODS: : We evaluated VDR protein expression (by monoclonal antibody immunostaining), melanoma characteristics, and carriage of VDR-FokI-rs2228570 (C>T),VDR-BsmI-rs1544410 (G>A),VDR-ApaI-rs7975232 (T>G), andVDR-TaqI-rs731236 (T>C) polymorphisms (by restriction fragment length polymorphism)...
May 2017: Cancer Biology & Medicine
https://www.readbyqxmd.com/read/28605323/a-king-bolete-boletus-edulis-agaricomycetes-rna-fraction-stimulates-proliferation-and-cytotoxicity-of-natural-killer-cells-against-myelogenous-leukemia-cells
#17
Marta Kinga Lemieszek, Fernando Herminio Ferreira Milheiro Nunes, Katarzyna Sawa-Wejksza, Wojciech Rzeski
Numerous studies indicate the crucial role of natural killer (NK) cells in the prevention of tumor growth and inhibition of their metastasis, which suggests the possibility of their use in cancer treatment. This therapeutic strategy required finding a selective NK cell stimulator that, upon administration, did not disturb organism homeostasis, unlike natural activators (interleukin-2 or interleukin-12). Because the majority of anticancer agents derived from Basidiomycetes are able to stimulate lymphocytes, we describe the influence of Boletus edulis RNA on a human NK cell line (NK92)...
2017: International Journal of Medicinal Mushrooms
https://www.readbyqxmd.com/read/28603425/pretreatment-combination-of-platelet-counts-and-neutrophil-lymphocyte-ratio-predicts-survival-of-nasopharyngeal-cancer-patients-receiving-intensity-modulated-radiotherapy
#18
Yu-Hsuan Lin, Kuo-Ping Chang, Yaoh-Shiang Lin, Ting-Shou Chang
BACKGROUND: Increased cancer-related inflammation has been associated with unfavorable clinical outcomes. The combination of platelet count and neutrophil-lymphocyte ratio (COP-NLR) has related outcomes in several cancers, except for nasopharyngeal carcinoma (NPC). This study evaluated the prognostic value of COP-NLR in predicting outcome in NPC patients treated with intensity-modulated radiotherapy (IMRT). MATERIALS AND METHODS: We analyzed the data collected from 232 NPC patients...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28602168/melanoma-antigens-and-related-immunological-markers
#19
REVIEW
Jacob Pitcovski, Ehud Shahar, Elina Aizenshtein, Raphael Gorodetsky
Melanoma is a highly lethal cancer deriving from transformed dermal melanocytes. Early diagnosed primary melanoma may be curable, but the cure-rate of more advanced stages is limited, with high mortality rate. With the progression of the tumor, the melanocytes overexpress intracellular or cell-surface molecules, including ectopic normal and tumor-specific proteins. Some of these induce a specific immune response by T and B lymphocytes. Antibodies raised against melanoma antigens were proposed for differential disease diagnosis, staging, prognosis and evaluation of treatment efficiency...
July 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/28599288/prognostic-role-of-tumor-infiltrating-lymphocytes-in-gastric-cancer-a-meta-analysis
#20
Xiao Zheng, Xing Song, Yingjie Shao, Bin Xu, Lujun Chen, Qi Zhou, Wenwei Hu, Dachuan Zhang, Changping Wu, Min Tao, Yibei Zhu, Jingting Jiang
BACKGROUND: In patients with gastric cancer, the prognostic value of tumor-infiltrating lymphocytes (TILs) is still controversial. A meta-analysis was performed to evaluate the prognostic value of TILs in gastric cancer. MATERIALS AND METHODS: We identify studies from PubMed, Embase and the Cochrane Library to assess the prognostic effect of TILs in patients with gastric cancer. Fixed-effects models or random-effects models were used estimate the pooled hazard ratios (HRs) for overall survival (OS) and disease-free survival (DFS), which depend on the heterogeneity...
May 22, 2017: Oncotarget
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