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Tumor immunology

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https://www.readbyqxmd.com/read/27919957/simultaneous-administration-of-statins-and-pioglitazone-limits-tumor-growth-in-a-rat-model-of-malignant-glioma
#1
Jorge Humberto Tapia-Pérez, Robert Preininger, Elmar Kirches, Annegret Reinhold, Jana Butzmann, Sylvia Prilloff, Christian Mawrin, Thomas Schneider
BACKGROUND/AIM: Statins are cholesterol reducers with considerable dose-dependent effect against glioma cells. The apoptotic effect could be increased by combining statins or by adding pioglitazone (PGZ). The last one is an anti-diabetic drug, an agonist of the peroxisome proliferator-activated receptor-gamma (PPARG). We used an animal model to test the effect of such combination in vivo and we investigated the changes on immunological processes. MATERIALS AND METHODS: Thirty-three rats (F344/DuCrl) were anesthetized and glioblastoma (F98) cells were implanted stereotactically...
December 2016: Anticancer Research
https://www.readbyqxmd.com/read/27919753/advax-a-delta-inulin-microparticle-potentiates-in-built-adjuvant-property-of-co-administered-vaccines
#2
Masayuki Hayashi, Taiki Aoshi, Yasunari Haseda, Kouji Kobiyama, Edward Wijaya, Noriyuki Nakatsu, Yoshinobu Igarashi, Daron M Standley, Hiroshi Yamada, Yoshikazu Honda-Okubo, Hiromitsu Hara, Takashi Saito, Toshiyuki Takai, Cevayir Coban, Nikolai Petrovsky, Ken J Ishii
Advax, a delta inulin-derived microparticle, has been developed as an adjuvant for several vaccines. However, its immunological characteristics and potential mechanism of action are yet to be elucidated. Here, we show that Advax behaves as a type-2 adjuvant when combined with influenza split vaccine, a T helper (Th)2-type antigen, but behaves as a type-1 adjuvant when combined with influenza inactivated whole virion (WV), a Th1-type antigen. In addition, an adjuvant effect was not observed when Advax-adjuvanted WV vaccine was used to immunize toll-like receptor (TLR) 7 knockout mice which are unable to respond to RNA contained in WV antigen...
December 1, 2016: EBioMedicine
https://www.readbyqxmd.com/read/27917263/changes-in-cellular-proliferation-and-plasma-products-are-associated-with-liver-failure
#3
Juliana Gil Melgaço, Frederico Marianetti Soriani, Pedro Henrique Ferreira Sucupira, Leonardo Assaf Pinheiro, Yasmine Rangel Vieira, Jaqueline Mendes de Oliveira, Lia Laura Lewis-Ximenez, Cristina Carvalho Vianna Araújo, Lúcio Filgueiras Pacheco-Moreira, Gustavo Batista Menezes, Oswaldo Gonçalves Cruz, Claudia Lamarca Vitral, Marcelo Alves Pinto
AIM: To study the differences in immune response and cytokine profile between acute liver failure and self-limited acute hepatitis. METHODS: Forty-six patients with self-limited acute hepatitis (AH), sixteen patients with acute liver failure (ALF), and twenty-two healthy subjects were involved in this study. The inflammatory and anti-inflammatory products in plasma samples were quantified using commercial enzyme-linked immunoassays and quantitative real-time PCR...
November 18, 2016: World Journal of Hepatology
https://www.readbyqxmd.com/read/27916840/ligand-activation-of-tam-family-receptors-implications-for-tumor-biology-and-therapeutic-response
#4
REVIEW
Viralkumar Davra, Stanley G Kimani, David Calianese, Raymond B Birge
The TAM family of receptors (i.e., Tyro3, Axl, and Mertk), and their ligands Growth arrest specific factor 6 (Gas6) and Protein S (Pros1) contribute to several oncogenic processes, such as cell survival, invasion, migration, chemo-resistance, and metastasis, whereby expression often correlates with poor clinical outcomes. In recent years, there has been great interest in the study of TAM receptors in cancer, stemming both from their roles as oncogenic signaling receptors, as well as their roles in tumor immunology...
November 29, 2016: Cancers
https://www.readbyqxmd.com/read/27916651/pharmacological-and-immunological-targeting-of-tumor-mesenchymalization
#5
REVIEW
Justin M David, Charli Dominguez, Claudia Palena
Controlling the spread of carcinoma cells to distant organs is the foremost challenge in cancer treatment, as metastatic disease is generally resistant to therapy and is ultimately incurable for the majority of patients. The plasticity of tumor cell phenotype, in which the behaviors and functions of individual tumor cells differ markedly depending upon intrinsic and extrinsic factors, is now known to be a central mechanism in cancer progression. Our expanding knowledge of epithelial and mesenchymal phenotypic states in tumor cells, and the dynamic nature of the transitions between these phenotypes has created new opportunities to intervene to better control the behavior of tumor cells...
December 1, 2016: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/27911915/marathon-race-affects-neutrophil-surface-molecules-role-of-inflammatory-mediators
#6
Vinicius Coneglian Santos, Ana Paula Renno Sierra, Rodrigo Oliveira, Kim Guimarães Caçula, César Miguel Momesso, Fabio Takeo Sato, Maysa Braga Barros Silva, Heloisa Helena Oliveira, Maria Elizabeth Pereira Passos, Diego Ribeiro de Souza, Olivia Santos Gondim, Marino Benetti, Adriana Cristina Levada-Pires, Nabil Ghorayeb, Maria Augusta Peduti Dal Molin Kiss, Renata Gorjão, Tânia Cristina Pithon-Curi, Maria Fernanda Cury-Boaventura
The fatigue induced by marathon races was observed in terms of inflammatory and immunological outcomes. Neutrophil survival and activation are essential for inflammation resolution and contributes directly to the pathogenesis of many infectious and inflammatory conditions. The aim of this study was to investigate the effect of marathon races on surface molecules related to neutrophil adhesion and extrinsic apoptosis pathway and its association with inflammatory markers. We evaluated 23 trained male runners at the São Paulo International Marathon 2013...
2016: PloS One
https://www.readbyqxmd.com/read/27911420/-role-of-immunological-factors-in-the-development-of-myopic-choroidal-neovascularization
#7
A G Shchuko, N V Zaitseva, T N Yur'eva, E R Chernykh, I M Mikhalevich, A V Grigor'eva
AIM: To study the concentration of cytokines in the aqueous humor of the anterior chamber in patients with myopic choroidal neovascularization (mCNV) and to compare the results to their ophthalmic status. MATERIAL AND METHODS: A total of 19 patients (19 eyes) with mCNV treated with intravitreal ranibizumab were included in the study. The control group consisted of 15 patients (15 eyes) with myopia who had cataract surgery. Age, sex, and refractive error distribution were similar to that in the study group...
2016: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/27909701/immunological-quality-and-performance-of-tumor-vessel-targeting-car-t-cells-prepared-by-mrna-ep-for-clinical-research
#8
Kanako Inoo, Ryo Inagaki, Kento Fujiwara, Shigemi Sasawatari, Takashi Kamigaki, Shinsaku Nakagawa, Naoki Okada
We previously reported that tumor vessel-redirected T cells, which were genetically engineered with chimeric antigen receptor (CAR) specific for vascular endothelial growth factor receptor 2 (VEGFR2), demonstrated significant antitumor effects in various murine solid tumor models. In the present study, we prepared anti-VEGFR2 CAR-T cells by CAR-coding mRNA electroporation (mRNA-EP) and analyzed their immunological characteristics and functions for use in clinical research. The expression of anti-VEGFR2 CAR on murine and human T cells was detected with approximately 100% efficiency for a few days, after peaking 6-12 hours after mRNA-EP...
2016: Molecular Therapy Oncolytics
https://www.readbyqxmd.com/read/27908931/filling-the-tank-keeping-antitumor-t-cells-metabolically-fit-for-the-long-haul
#9
REVIEW
Greg M Delgoffe
Discoveries in tumor immunology and subsequent clinical advances in cancer immunotherapy have revealed that the immune system is not oblivious to tumor progression but heavily interacts with developing neoplasia and malignancy. A major factor preventing immune destruction is the establishment of a highly immunosuppressive tumor microenvironment (TME), which provides architecture to the tumor, supports indirect means of immunosuppression such as the recruitment of tolerogenic cells like regulatory T cells and myeloid-derived suppressor cells (MDSC), and represents a zone of metabolically dearth conditions...
December 2016: Cancer Immunology Research
https://www.readbyqxmd.com/read/27908930/translating-science-into-survival-report-on-the-second-international-cancer-immunotherapy-conference
#10
Arthur N Brodsky, Vanessa M Hubbard-Lucey
On September 25-28, 2016, in New York City, the Second International Cancer Immunotherapy Conference was cohosted by the Cancer Research Institute, the American Association for Cancer Research, the Association for Cancer Immunotherapy, and the European Academy of Tumor Immunology. This exciting conference brought together more than 1,400 participants, including scientists, clinicians, investors, and regulators, to discuss the latest scientific advances within the field of cancer immunotherapy. This conference report reviews the chief themes that emerged during the 4-day meeting...
December 2016: Cancer Immunology Research
https://www.readbyqxmd.com/read/27900450/il-9-and-th9-in-parasite-immunity
#11
REVIEW
P Licona-Limón, A Arias-Rojas, E Olguín-Martínez
Interleukin-9 is a cytokine classically related to type 2 immune responses whose cellular identity has been recently reevaluated to identify a new specialized T helper subset called Th9 and an innate source referred as innate lymphoid cell type 2. Over the past years, IL-9 has been associated with allergic responses, tumor immunology, and autoimmunity; however, in this review, we will specifically focus on the role of IL-9 and Th9 cells in the context of parasitic infections. We will summarize and discuss all the evidence relating IL-9 expression and function in parasitic infections with a particular emphasis in helminth infections, an important health issue in developing countries; we will also provide a general description and classification of parasites, the immune response and cellular compartments activated in this context, and its implications and future directions towards a complete understanding of this interesting new T helper subset and its potential therapeutic use...
November 29, 2016: Seminars in Immunopathology
https://www.readbyqxmd.com/read/27899275/immunological-consequences-of-immunization-with-tumor-lysate-vaccine-and-propranolol-as-an-adjuvant-a-study-on-cytokine-profiles-in-breast-tumor-microenvironment
#12
Somayeh Ashrafi, Reza Shapouri, Mehdi Mahdavi
In this study, we sought out to study the anti-cancer effects of propranolol (Pro) in combination with tumor lysate vaccine on lymphocyte proliferation activities as well as on IL-2, IL-4, IL-10, IL-12, IL-17 and IFN-γ cytokine concentration in the tumor microenvironment (TME). A tumor model was established in inbred Balb/C mice using transplantation of tumor to the flank of native mice. Tumor-bearing mice were immunized with lysate tumor cells (vaccine), a combination of Pro/Vaccine (Vac). Control groups consisted of tumor-bearing mice receiving only propranolol or PBS three times with one week interval via subcutaneous (s...
November 27, 2016: Immunology Letters
https://www.readbyqxmd.com/read/27896758/phenotyping-multiple-subsets-of-immune-cells-in-situ-in-ffpe-tissue-sections-an-overview-of-methodologies
#13
James R Mansfield
The recent clinical success of new cancer immunotherapy agents and methods is driving the need to understand the role of immune cells in solid tissues, especially tumors. Immune cell phenotyping via flow cytometry, while a cornerstone of immunology, is not spatially resolved and cannot analyze immune cell subsets in situ in clinical biopsy sections or to determine their interrelationships. To address this problem, a number of methodologies have been developed in attempts to phenotype immune and other cells in images acquired from tissue sections and to assess their organization in the tumor and its microenvironment...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27895978/cytokines-and-cytokine-receptors-involved-in-the-pathogenesis-of-alzheimer-s-disease
#14
Tomone Nagae, Kiho Araki, Yuki Shimoda, Lucia I Sue, Thomas G Beach, Yoshihiro Konishi
Inflammatory mechanisms are implicated in the pathology of Alzheimer's disease (AD). However, it is unclear whether inflammatory alterations are a cause or consequence of neurodegeneration leading to dementia. Clarifying this issue would provide valuable insight into the early diagnosis and therapeutic management of AD. To address this, we compared the mRNA expression profiles of cytokines in the brains of AD patients with "non-demented individuals with AD pathology" and non-demented healthy control (ND) individuals...
August 2016: Journal of Clinical & Cellular Immunology
https://www.readbyqxmd.com/read/27891129/immunological-and-translational-aspects-of-nk-cell-based-antitumor-immunotherapies
#15
REVIEW
Maxim Shevtsov, Gabriele Multhoff
Natural killer (NK) cells play a pivotal role in the first line of defense against cancer. NK cells that are deficient in CD3 and a clonal T cell receptor (TCR) can be subdivided into two major subtypes, CD56(dim)CD16(+) cytotoxic and CD56(bright)CD16(-) immunoregulatory NK cells. Cytotoxic NK cells not only directly kill tumor cells without previous stimulation by cytotoxic effector molecules, such as perforin and granzymes or via death receptor interactions, but also act as regulatory cells for the immune system by secreting cytokines and chemokines...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27890932/il-10-production-by-cll-cells-is-enhanced-in-the-anergic-ighv-mutated-subset-and-associates-with-reduced-dna-methylation-of-the-il10-locus
#16
S Drennan, A D'Avola, Y Gao, C Weigel, E Chrysostomou, A J Steele, T Zenz, C Plass, P W Johnson, A P Williams, G Packham, F K Stevenson, C C Oakes, F Forconi
Chronic lymphocytic leukemias (CLL) with unmutated (U-CLL) or mutated (M-CLL) IGHV have variable features of immunosuppression, possibly influenced by those CLL cells activated to produce IL-10. The two subsets differ in their levels of anergy, defined by low surface IgM levels/signaling capacity, and in their DNA methylation profile, particularly variable in M-CLL. We have now found that levels of IL-10 produced by activated CLL cells were highly variable. Levels were higher in M-CLL than in U-CLL and correlated with anergy...
November 28, 2016: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/27890931/a-tlr7-agonist-enhances-the-anti-tumor-efficacy-of-obinutuzumab-in-murine-lymphoma-models-via-nk-cells-and-cd4-t-cells
#17
E J Cheadle, G Lipowska-Bhalla, S J Dovedi, E Fagnano, C Klein, J Honeychurch, T M Illidge
Anti-CD20 mAb such as rituximab have proven highly effective at improving outcome in B-cell malignancies. However, many patients ultimately relapse and become refractory to treatment. The glycoengineered anti-CD20 mAb obinutuzumab was developed to induce enhanced antibody dependent cellular cytotoxicity, antibody dependent phagocytosis and direct cell death and was shown to lead to improved outcomes in a randomized study in B-chronic lymphocytic leukemia (B-CLL). We hypothesized that immune stimulation through TLR7 agonism in combination with obinutuzumab would further enhance lymphoma clearance and the generation of long-term anti-tumor immune responses...
November 28, 2016: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/27890919/human-%C3%AE-%C3%AE-t-cell-subsets-and-their-involvement-in-tumor-immunity
#18
REVIEW
Dang Wu, Pin Wu, Fuming Qiu, Qichun Wei, Jian Huang
γδT cells are a conserved population of innate lymphocytes with diverse structural and functional heterogeneity that participate in various immune responses during tumor progression. γδT cells perform potent immunosurveillance by exerting direct cytotoxicity, strong cytokine production and indirect antitumor immune responses. However, certain γδT-cell subsets also contribute to tumor progression by facilitating cancer-related inflammation and immunosuppression. Here, we review recent observations regarding the antitumor and protumor roles of major structural and functional subsets of human γδT cells, describing how these subsets are activated and polarized, and how these events relate to subsequent function in tumor immunity...
November 28, 2016: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/27890562/tailor-made-fibroblast-specific-and-antibiotic-free-interleukin-12-plasmid-for-gene-electrotransfer-mediated-cancer-immunotherapy
#19
Urska Kamensek, Natasa Tesic, Gregor Sersa, Spela Kos, Maja Cemazar
Electrotransfer mediated delivery of interleukin-12 (IL-12) gene, encoded on a plasmid vector, has already been demonstrated to have a potent antitumor efficacy and great potential for clinical application. In the present study, our aim was to construct an optimized IL-12-encoding plasmid that is safe from the regulatory point of view. In light of previous studies demonstrating that IL-12 should be released in a tumor localized manner for optimal efficacy, the strong ubiquitous promoter was replaced with a weak endogenous promoter of the collagen 2 gene, which is specific for fibroblasts...
November 24, 2016: Plasmid
https://www.readbyqxmd.com/read/27890369/anti-tumor-activity-of-tanshinone-iia-in-combined-with-cyclophosphamide-against-lewis-mice-with-lung-cancer
#20
Qi Li, Ke Hu, Si Tang, Li-Fang Xu, Yu-Chuan Luo
OBJECTIVE: To explore the anti-tumor activity of tanshinone IIA in combined with cyclophosphamide against Lewis mice with lung cancer and the effect on cellular immune function. METHODS: Lewis tumor cells were inoculated subcutaneously into the right armpit of mice in each group (n = 20) to establish Lewis lung cancer mice model. After model establishment, mice in the model group were given normal saline by lavage, qd. Mice in treatment I group were given intraperitoneal injection of Tan IIA, 15 mg/kg, qd...
November 2016: Asian Pacific Journal of Tropical Medicine
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