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Cancer immunology

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https://www.readbyqxmd.com/read/28339013/immunological-effects-of-occupational-exposure-to-lead-review
#1
Concettina Fenga, Silvia Gangemi, Valentina Di Salvatore, Luca Falzone, Massimo Libra
It is well-known that occupational and environmental exposure to several factors, including benzene, heavy metals, chemicals and mineral fibers, is associated with the risk of developing a great number of diseases. Numerous studies have been carried out in order to investigate the mechanisms of toxicity of these substances, with particular regard to the possible toxic effects on the immune system. However, little is known about the influence of heavy metals, such as lead, on the immune system in human populations...
March 24, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28338836/a-novel-pathogenesis-of-inflammatory-bowel-disease-from-the-perspective-of-glyco-immunology
#2
Shinichiro Shinzaki, Hideki Iijima, Hironobu Fujii, Yoshihiro Kamada, Tetsuji Naka, Tetsuo Takehara, Eiji Miyoshi
Oligosaccharide modifications play an essential role in various inflammatory diseases and cancers, but their pathophysiologic roles, especially in inflammation, are not clear. Inflammatory bowel disease (IBD) is an intractable chronic inflammatory disorder with an unknown aetiology, and the number of patients with IBD is increasing throughout the world. Certain types of immunosuppressant drugs, such as corticosteroids, are effective for IBD, suggesting that immune function is closely associated with the pathophysiology of IBD...
March 7, 2017: Journal of Biochemistry
https://www.readbyqxmd.com/read/28338506/a-preliminary-report-radical-surgery-and-stem-cell-transplantation-for-the-treatment-of-patients-with-pancreatic-cancer
#3
Brigitta Omazic, Burcu Ayoglu, Matthias Löhr, Ralf Segersvärd, Caroline Verbeke, Isabelle Magalhaes, Zuzana Potacova, Jonas Mattsson, Alexei Terman, Sam Ghazi, Nils Albiin, Nikolaos Kartalis, Peter Nilsson, Thomas Poiret, Liu Zhenjiang, Rainer Heuchel, Jochen M Schwenk, Johan Permert, Markus J Maeurer, Olle Ringden
We examined the immunologic effects of allogeneic hematopoietic stem cell transplantation (HSCT) in the treatment of pancreatic ductal adenocarcinoma, a deadly disease with a median survival of 24 months for resected tumors and a 5-year survival rate of 6%. After adjuvant chemotherapy, 2 patients with resected pancreatic ductal adenocarcinoma underwent HSCT with HLA-identical sibling donors. Comparable patients who underwent radical surgery, but did not have a donor, served as controls (n=6). Both patients developed humoral and cellular (ie, HLA-A*01:01-restricted) immune responses directed against 2 novel tumor-associated antigens (TAAs), INO80E and UCLH3 after HSCT...
March 23, 2017: Journal of Immunotherapy
https://www.readbyqxmd.com/read/28337274/decitabine-treatment-sensitizes-tumor-cells-to-t-cell-mediated-cytotoxicity-in-patients-with-myelodysplastic-syndromes
#4
Zheng Zhang, Qi He, Ying Tao, Juan Guo, Feng Xu, Ling-Yun Wu, You-Shan Zhao, Dong Wu, Li-Yu Zhou, Ji-Ying Su, Lu-Xi Song, Chao Xiao, Xiao Li, Chun-Kang Chang
Decitabine treatment improves immunological recognition that increases expression of cancer-testis antigens (CTAs) against solid tumors. The mechanisms of decitabine enhancement of immunogenicity when used for patients with myelodysplastic syndromes (MDS) remain unclear. In the present study, we found relatively low baseline expression of MAGE-A1, MAGE-A3, and SP17 in MDS-derived cell lines. Decitabine treatment significantly improved MAGE-A1, MAGE-A3, and SP17 expression in these cell lines and in MDS patients...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28335888/second-and-third-generation-drugs-for-immuno-oncology-treatment-the-more-the-better
#5
REVIEW
Wolfram C M Dempke, Klaus Fenchel, Peter Uciechowski, Stephen P Dale
Recent success in cancer immunotherapy (anti-CTLA-4, anti-PD1/PD-L1) has confirmed the hypothesis that the immune system can control many cancers across various histologies, in some cases producing durable responses in a way not seen with many small-molecule drugs. However, only less than 25% of all patients do respond to immuno-oncology drugs and several resistance mechanisms have been identified (e.g. T-cell exhaustion, overexpression of caspase-8 and β-catenin, PD-1/PD-L1 gene amplification, MHC-I/II mutations)...
March 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28333845/changes-in-the-extracellular-matrix-are-associated-with-the-development-of-serous-tubal-intraepithelial-carcinoma-into-high-grade-serous-carcinoma
#6
Sophieke C H A van der Steen, Johan Bulten, Koen K Van de Vijver, Toin H van Kuppevelt, Leon F A G Massuger
OBJECTIVE: The identification of a marker for early progression of preinvasive lesions into invasive pelvic high-grade serous carcinoma (HGSC) may provide novel handles for innovative screening and prevention strategies. The interplay between cancer cells and the extracellular matrix (ECM) is one of the main principles in cancer development and growth, but has been largely neglected in preinvasive lesions. This is the first study addressing the involvement of the ECM in the "step-by-step" transition of normal fallopian tube epithelium into preinvasive lesions, and eventually the progression of preinvasive lesions into invasive HGSC...
March 23, 2017: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/28332219/targeting-immunotherapy-to-the-tumor-microenvironment
#7
Michael Dougan, Stephanie K Dougan
Targeting drugs to the tumor microenvironment has long been appreciated as a means of increasing local concentrations and decreasing systemic toxicities. How drug targeting might apply to immune-based therapies is less clear. In this review, we explain the immunology of cancer, with a focus on the principles of in situ vaccination. Certain types of therapies are more amenable to local versus systemic delivery; these include cytokines, adjuvants, radiation, and agents targeting tumor-resident cell populations...
March 23, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28331999/the-acidic-microenvironment-as-a-possible-niche-of-dormant-tumor-cells
#8
REVIEW
Silvia Peppicelli, Elena Andreucci, Jessica Ruzzolini, Anna Laurenzana, Francesca Margheri, Gabriella Fibbi, Mario Del Rosso, Francesca Bianchini, Lido Calorini
Although surgical excision, chemo-, and radio-therapy are clearly advanced, tumors may relapse due to cells of the so-called "minimal residual disease". Indeed, small clusters of tumor cells persist in host tissues after treatment of the primary tumor elaborating strategies to survive and escape from immunological attacks before their relapse: this variable period of remission is known as "cancer dormancy". Therefore, it is crucial to understand and consider the major concepts addressing dormancy, to identify new targets and disclose potential clinical strategies...
March 22, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28328045/micrornas-downregulated-following-immune-activation-of-rat%C3%A2-testis
#9
Mitchell I Parker, Michael A Palladino
PROBLEM: Little is known about how infection and the response to inflammation affect the microRNA (miRNA) profile of the male reproductive tract. We hypothesized that expression of inflammatory-related miRNAs would be altered following immune activation of rat testis. METHOD OF STUDY: Testis total RNA was purified from Sprague-Dawley rats 3 or 6 hours after receiving a 5 mg/kg intraperitoneal injection of bacterial lipopolysaccharide (LPS) and examined by qPCR using an 84-panel miRNA array...
March 22, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28327740/molecular-dynamics-simulations-elucidate-conformational-selection-and-induced-fit-mechanisms-in-the-binding-of-pd-1-and-pd-l1
#10
Wenping Liu, Bing Huang, Yashu Kuang, Guangjian Liu
Blockage of the interactions between immunologic checkpoint protein PD-1 and its ligand PD-L1 showed efficacy for cancer treatment. X-ray structures have captured static conformational snapshots of PD-1 and revealed that the CC' loop adopts an open conformation in the apo-protein but turns into a closed form and interacts with PD-L1 in the complex. This structural heterogeneity brings difficulties for structure-based drug discovery targeting PD-1. To gain insights into the role of the CC' loop in molecular recognition, we have undertaken a comparative study between the open and closed conformations in apo-PD-1 and the PD-1/PD-L1 complex using molecular dynamics simulations...
March 22, 2017: Molecular BioSystems
https://www.readbyqxmd.com/read/28327618/the-transcriptional-repressor-hic1-regulates-intestinal-immune-homeostasis
#11
K Burrows, F Antignano, M Bramhall, A Chenery, S Scheer, V Korinek, T M Underhill, C Zaph
The intestine is a unique immune environment that must respond to infectious organisms but remain tolerant to commensal microbes and food antigens. However, the molecular mechanisms that regulate immune cell function in the intestine remain unclear. Here we identify the POK/ZBTB family transcription factor hypermethylated in cancer 1 (HIC1, ZBTB29) as a central component of immunity and inflammation in the intestine. HIC1 is specifically expressed in immune cells in the intestinal lamina propria (LP) in the steady state and mice with a T-cell-specific deletion of HIC1 have reduced numbers of T cells in the LP...
March 22, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28325688/current-and-emerging-molecular-tests-for-human-papillomavirus-related-neoplasia-in-the-genomic-era
#12
REVIEW
Sixto M Leal, Margaret L Gulley
Laboratory tests have a key role in preventing human papillomavirus (HPV)-driven carcinomas and in guiding therapeutic interventions. An understanding of the virology, immunology, and carcinogenesis of HPV is essential for choosing appropriate diagnostic test modalities and developing new and even more effective cancer prevention strategies. HPV infects basal epithelial cells on multiple surfaces and induces carcinoma primarily in the cervix and the oropharynx. HPV types are stratified as high risk or low risk based on their carcinogenic potential, driven largely by viral interference with cell cycle regulation and the DNA damage response to promote continuous cell division while thwarting apoptosis, which enables mutation accumulation...
March 18, 2017: Journal of Molecular Diagnostics: JMD
https://www.readbyqxmd.com/read/28325288/retroviral-replicating-vector-delivery-of-mir-pdl1-inhibits-immune-checkpoint-pdl1-and-enhances-immune-responses-in%C3%A2-vitro
#13
Amy H Lin, Christopher G Twitty, Ryan Burnett, Andrew Hofacre, Leah A Mitchell, Fernando Lopez Espinoza, Harry E Gruber, Douglas J Jolly
Tumor cells express a number of immunosuppressive molecules that can suppress anti-tumor immune responses. Efficient delivery of small interfering RNAs to treat a wide range of diseases including cancers remains a challenge. Retroviral replicating vectors (RRV) can be used to stably and selectively introduce genetic material into cancer cells. Here, we designed RRV to express shRNA (RRV-shPDL1) or microRNA30-derived shRNA (RRV-miRPDL1) using Pol II or Pol III promoters to downregulate PDL1 in human cancer cells...
March 17, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28325250/radiotherapy-in-the-age-of-cancer-immunology-current-concepts-and-future-developments
#14
REVIEW
Mauro Loi, Isacco Desideri, Daniela Greto, Monica Mangoni, Mariangela Sottili, Icro Meattini, Carlotta Becherini, Francesca Terziani, Camilla Delli Paoli, Emanuela Olmetto, Pierluigi Bonomo, Lorenzo Livi
Major advances in the knowledge of cancer biology and its interactions with tumor immune environment led to the emergence, in the last five years of new immunotherapy-based treatment strategies in cancer patients. At the same time, improvement in radiation technique and progress in radiobiology allowed in the last decade to expand the applications of radiotherapy in a growing number of settings. At present, there are strong theoretical basis to propose immune-enhanced radiation therapy that may represent in the future a new paradigm of treatment, combining the intrinsic power of radiotherapy to elicit a specific, systemic, tumor-directed immune response with modern highly conformal and precise dose delivery, in order to maximize response at the major site of disease and obtain durable disease control...
April 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/28325210/breast-cancer-immunology-and-immunotherapy-current-status-and-future-perspectives
#15
L de la Cruz-Merino, M Chiesa, R Caballero, F Rojo, N Palazón, F H Carrasco, V Sánchez-Margalet
Cancer immunology has gained renewed interest in the past few years due to emerging findings on mechanisms involved in tumoral immune evasion. Indisputably, immune edition is currently considered a critical hallmark of cancer. Basic research has revealed new targets which can be modulated in the clinical setting with new compounds and strategies. As recent evidence confirms, breast cancer (BC) is a complex and heterogeneous disease in which host immune responses play a substantial role. T-infiltrating lymphocytes measurement is suggested as a powerful new tool necessary to predict early BC evolution, especially in HER2-positive and triple negative subtypes...
2017: International Review of Cell and Molecular Biology
https://www.readbyqxmd.com/read/28324748/influenza-vaccination-in-adult-patients-with-solid-tumours-treated-with-chemotherapy
#16
REVIEW
Albert Vollaard, Imke Schreuder, Lizzy Slok-Raijmakers, Wim Opstelten, Guus Rimmelzwaan, Hans Gelderblom
Patients with solid tumours receiving chemotherapy are at risk for influenza complications. Yearly influenza vaccination is recommended to patients treated with chemotherapy. However, adherence to vaccination is low, most likely due to lack of data on efficacy, optimal timing and safety of vaccination. There is scarce evidence for the effectiveness of the influenza vaccine in adult patients with solid tumours and chemotherapy on reduction of pneumonia, decreased mortality and fewer interruptions of oncological treatment...
March 16, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28323751/long-term-nitrite-inhalant-exposure-and-cancer-risk-in-men-who-have-sex-with-men-a-prospective-cohort-study
#17
Anupriya Dutta, Hajime Uno, Alex Holman, David R Lorenz, Steven M Wolinsky, Dana Gabuzda
OBJECTIVES: Nitrite inhalants (poppers) are commonly used recreational drugs among men who have sex with men (MSM) and were previously associated with elevated rates of high-risk sexual behavior, HIV and HHV-8 seroconversion, and transient immunosuppressive effects in experimental models. Whether long-term popper use is associated with cancer risk among MSM in the HAART era is unclear. DESIGN: Prospective cohort study of cancer risk in 3223 HIV-infected and -uninfected MSM in the Multicenter AIDS Cohort Study from 1996-2010...
March 18, 2017: AIDS
https://www.readbyqxmd.com/read/28323111/nanoparticles-for-tumor-immunotherapy
#18
REVIEW
Xinlong Zang, Xiuli Zhao, Haiyang Hu, Mingxi Qiao, Yihui Deng, Dawei Chen
Although most researches and therapies have been focused on the tumor itself, it is becoming clear that immune cells can not only suppress tumor development but support and maintain their malignant type. Promising recent developments in immunology will provide opportunities for tumor-specific immunotherapy, which can orchestrate the patients immune system to target, fight and eradicate cancer cells without destroying healthy cells. However, antitumor immunity driven by self-immune system alone may be therapeutically insufficient...
March 18, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28321810/overview-of-basic-immunology-for-clinical-investigators
#19
Bettzy Stephen, Joud Hajjar
Tumor exists as a complex network of structures with an ability to evolve and evade the host immune surveillance mechanism. The immune milieu which includes macrophages, dendritic cells, natural killer cells, neutrophils, mast cells, B cells, and T cells are found in the core, the invasive margin, or the adjacent stromal or lymphoid component of the tumor. The immune infiltrate is heterogeneous and varies within a patient and between patients of the same tumor histology. The location, density, functionality, and the cross talk between the immune cells in the tumor microenvironment influence the nature of immune response, prognosis, and treatment outcomes in cancer patients...
2017: Advances in Experimental Medicine and Biology
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
#20
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
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