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https://www.readbyqxmd.com/read/28433543/phenformin-inhibits-myeloid-derived-suppressor-cells-and-enhances-the-anti-tumor-activity-of-pd-1-blockade-in-melanoma
#1
Sun Hye Kim, Man Li, Sebastian Trousil, Yaqing Zhang, Marina Pasca di Magliano, Kenneth D Swanson, Bin Zheng
Biguanides, such as the diabetes therapeutics metformin and phenformin, have demonstrated antitumor activity both in vitro and in vivo. However, their potential effects on the tumor microenvironment are largely unknown. Here we report that phenformin selectively inhibits granulocytic myeloid-derived suppressor cells (G-MDSCs) in spleens of tumor bearing mice and ex vivo. Phenformin induces production of reactive oxygen species in G-MDSC, whereas the antioxidant N-acetylcysteine attenuates the inhibitory effects of phenformin...
April 19, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28430604/signal-transducing-adaptor-protein-2-promotes-generation-of-functional-long-term-memory-cd8-t-cells-by-preventing-terminal-effector-differentiation
#2
Daisuke Muraoka, Naohiro Seo, Tae Hayashi, Chisaki Hyuga-Amaike, Kana Okamori, Isao Tawara, Naozumi Harada, Hiroshi Shiku
Long-surviving memory CD8+ T cells generated by stimulation with appropriate tumor-associated antigens are the most aggressive and persistent tumoricidal effectors. In this event of memory CD8+ T cell development, the signal transducer and activator of transcription (STAT) proteins function as the crucial intracellular signaling molecules, but the regulatory mechanism of STATs in CD8+ T cells is not fully understood. In this study, we report for the first time, by using murine vaccination models, that signal-transducing adaptor protein-2 (STAP2) maintains the cytotoxicity of long-lived memory CD8+ T cells by controlling a STAT3/suppressor of cytokine signaling 3 (SOCS3) cascade...
February 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28429751/preclinical-study-of-raav2-strail-pharmaceutical-efficacy-biodistribution-and-safety-in-animals
#3
Q Ru, W Li, X Wang, S Zhang, L Chen, Y Zhang, Y Ge, Y Zu, Y Liu, D Zheng
The recombinant sTRAIL has been in clinical trial for various human malignancies. However, the half-life time of sTRAIL is very short, which might be an important factor influencing its clinical efficacy for cancer therapy. We previously reported the recombinant adeno-associated virus (AAV)-encoding sTRAIL95-281-mediated sTRAIL expression in vivo up to 8 months and suppressed tumor growth markedly in mouse xenografts. In the present study, we further evaluated the clinical potency for cancer gene therapy and the safety in mouse and non-human primates...
April 21, 2017: Cancer Gene Therapy
https://www.readbyqxmd.com/read/28429313/gradually-shrinking-intra-abdominal-desmoid-tumor-derived-from-the-stomach-in-a-young-boy-a-case-report
#4
Kazushi Miyata, Masahide Fukaya, Masato Nagino
BACKGROUND: Intra-abdominal desmoid tumors, particularly those derived from the stomach, are rare. Such tumors are associated with a history of familial adenomatous polyposis (FAP), trauma, or surgical procedures in general. In addition, spontaneous shrinking of an intra-abdominal desmoid tumor is rarer. And desmoid tumors most commonly arise during the fourth decade of life. CASE PRESENTATION: A 17-year-old boy with lower abdominal pain was diagnosed with a gastrointestinal stromal tumor (GIST) or a hematoma at a local hospital...
December 2017: Surgical Case Reports
https://www.readbyqxmd.com/read/28425263/combination-therapy-with-dendritic-cell-based-vaccine-and-anti-cd69-antibody-enhances-antitumor-efficacy-in-renal-cell-carcinoma-bearing-mice
#5
Si-Ming Wei, Hang-Li Pan, Li Wang, Guo-Li Yin, Kai Zhong, Ya Zhou, Shu-Jiao Yang, Zhao-Liang Xin
BACKGROUND/AIM: Dendritic cell-based vaccine therapy for renal cell carcinoma is effective but requires improvement. Here we explored whether combination therapy with dendritic cell-based vaccine and anti-CD69 antibody can enhance antitumor efficacy in renal cell carcinoma-bearing mice. MATERIALS AND METHODS: Balb/c mice were challenged subcutaneously with murine renal cell carcinoma (Renca) cells. On day 3 after tumor cell inoculation, tumor-bearing mice either were left untreated or were treated with Renca tumor lysate-pulsed dendritic cells (i...
April 18, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28423736/laminarin-promotes-anti-cancer-immunity-by-the-maturation-of-dendritic-cells
#6
Kyeongeun Song, Li Xu, Wei Zhang, Yun Cai, Bian Jang, Junghwan Oh, Jun-O Jin
This research evaluates the effects of laminarin on the maturation of dendritic cells and on the in vivo activation of anti-cancer immunity. In vivo treatment of C56BL/6 mice with laminarin increased the expression levels of co-stimulatory molecules and the production of pro-inflammatory cytokines in spleen dendritic cells. Laminarin enhanced ovalbumin antigen presentation in spleen dendritic cells and promoted the proliferation of OT-I and OT-II T cells. Laminarin also induced the maturation of dendritic cells in tumor-draining lymph nodes and protected interferon-γ and tumor necrosis factor-α and proliferation of OT-I and OT-II T cells in tumors...
March 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423501/epigenetic-silencing-of-mir-520c-leads-to-induced-s100a4-expression-and-its-mediated-colorectal-cancer-progression
#7
Giridhar Mudduluru, Katharina Ilm, Steffen Fuchs, Ulrike Stein
The S100 calcium-binding protein A4 (S100A4) induces epithelial mesenchymal transition, migration, invasion, angiogenesis and metastasis. Its induced expression in several cancer types correlates with poor prognosis. Apart from the functional and transcriptional regulatory aspects of S100A4, its post-transcriptional regulation is not yet clearly elucidated. In this study, we show that microRNAs (miR) miR-505-5p and miR-520c-3p target the 3'-UTR of S100A4 and inhibits its expression and its mediated migration and invasion...
March 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28422039/-urinary-tract-lymphoepithelial-carcinoma-report-of-two-cases-and-bibliographic-review
#8
Sebastian Valverde Martínez, Waleska Salcedo Mercado, Isabel Rodríguez Cruz, Sara Belén Prieto Nogal, Mario Martín Hernández, Luis Miguel Gómez Tejeda
OBJECTIVE: We report two cases of patients diagnosed with lymphoepithelioma-like carcinomas of the urinary tract. We review the literature of this rare entity. The objective is to clarify the clinical and therapeutic characteristics. METHODS: We present a retrospective review of medical records of two patients diagnosed with lymphoepithelioma-like carcinomas, one in the renal pelvis and the other in the bladder. We review the epidemiology, diagnosis and therapeutic alternatives...
April 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28421385/in-vitro-and-in-vivo-anti-tumor-effects-of-selected-platinum-iv-and-dinuclear-platinum-ii-complexes-against-lung-cancer-cells
#9
Milos Arsenijevic, Marija Milovanovic, Snezana Jovanovic, Natalija Arsenijevic, Bojana Simovic Markovic, Marina Gazdic, Vladislav Volarevic
In the present study, cytotoxic effects of cisplatin, the most usually used chemotherapeutic agent, were compared with new designed platinum(IV) ([PtCl4(en)] (en = ethylenediamine) and [PtCl4(dach)]) (dach = (±)-trans-1,2-diaminocyclohexane) and platinum(II) complexes ([{trans-Pt(NH3)2Cl}2(μ-pyrazine)](ClO4)2 (Pt1), [{trans-Pt(NH3)2Cl}2(μ-4,4'-bipyridyl)](ClO4)2DMF(Pt2),[{trans-Pt(NH3)2Cl}2(μ-1,2-bis(4pyridyl)ethane)](ClO4)2 (Pt3)), in vitro and in vivo against human and murine lung cancer cells, to determine anti-tumor potential of newly synthesized platinum-based drugs in the therapy of lung cancer...
April 18, 2017: Journal of Biological Inorganic Chemistry: JBIC
https://www.readbyqxmd.com/read/28418679/bioresponsive-polyoxometalate-cluster-for-redox-activated-photoacoustic-imaging-guided-photothermal-cancer-therapy
#10
Dalong Ni, Dawei Jiang, Hector F Valdovinos, Emily B Ehlerding, Bo Yu, Todd E Barnhart, Peng Huang, Weibo Cai
Although various types of imaging agents have been developed for photoacoustic (PA) imaging, relatively few imaging agents exhibit high selectivity/sensitivity to the tumor microenvironment for on-demand PA imaging and therapy. Herein, molybdenum-based polyoxometalate (POM) clusters with the highest oxidation state of Mo(VI) (denoted as Ox-POM) were designed as novel agents for redox-activated PA imaging-guided photothermal therapy. Capable of escaping from recognition and capture by the liver and spleen, these renal clearable clusters with ultrasmall size (hydrodynamic size: 1...
April 20, 2017: Nano Letters
https://www.readbyqxmd.com/read/28414669/a-case-of-hepatosplentic-t-cell-lymphoma-a-rare-aggressive-tumor-of-the-young
#11
S Cingam, S Patel, N Koshy
INTRODUCTION: Hepatosplenic T-cell lymphoma (HSTCL); is an unusual entity first described in 1990 that predominantly affects middle-aged men and is classified by WHO under peripheral T-cell lymphomas. We present a 26-year-old man with HSCTL treated with a non-CHOP regimen. CASE: A 26 year old immigrant from Cameroon without significant past medical history presented with abdominal discomfort that was first noted 1 month prior at which time he was elbowed in abdomen during a basketball game...
March 2017: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/28408532/-68-ga-thp-psma-a-pet-imaging-agent-for-prostate-cancer-offering-rapid-room-temperature-one-step-kit-based-radiolabeling
#12
Jennifer D Young, Vincenzo Abbate, Cinzia Imberti, Levente K Meszaros, Michelle T Ma, Samantha Y A Terry, Robert C Hider, Greg E Mullen, Philip J Blower
The clinical impact and accessibility of (68)Ga tracers for the prostate-specific membrane antigen (PSMA) and other targets would be greatly enhanced by the availability of a simple, one-step kit-based labeling process. Radiopharmacy staff are accustomed to such procedures in the daily preparation of (99m)Tc radiopharmaceuticals. Currently, chelating agents used in (68)Ga radiopharmaceuticals do not meet this ideal. AIM: To develop and evaluate preclinically a (68)Ga radiotracer for imaging PSMA expression that could be radiolabeled simply by addition of (68)Ga generator eluate to a cold kit...
April 13, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28404904/%C3%AE-carrageenan-improves-the-antitumor-effect-of-dendritic-cellbased-vaccine
#13
Jinyao Li, Adila Aipire, Jinyu Li, Hongge Zhu, Yanping Wang, Wenjia Guo, Xiaoqin Li, Jia Yang, Chunling Liu
In this study, we investigated the effect of λ-carrageenan on the maturation and function of dendritic cells (DCs) and its adjuvant effect on DC-based vaccine. We found that λ-carrageenan dose-dependently decreased the endocytosis of DCs, promoted DC maturation and increased cytokine production through TLR4 mediated signaling pathway. λ-carrageenan treatment also enhanced the ability of DCs in the stimulating allogenic splenocyte proliferation. In TC-1 tumor mouse model, HPV peptides pulsed λ-carrageenan-DC (HPV-CGN-DC) significantly inhibited tumor growth compared with control group...
February 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28398879/parthenolide-selectively-sensitizes-prostate-tumor-tissue-to-radiotherapy-while-protecting-healthy-tissues-in-vivo
#14
Katherine L Morel, Rebecca J Ormsby, Eva Bezak, Christopher J Sweeney, Pamela J Sykes
Radiotherapy is widely used in cancer treatment, however the benefits can be limited by radiation-induced damage to neighboring normal tissues. Parthenolide (PTL) exhibits anti-inflammatory and anti-tumor properties and selectively induces radiosensitivity in prostate cancer cell lines, while protecting primary prostate epithelial cell lines from radiation-induced damage. Low doses of radiation have also been shown to protect from subsequent high-dose-radiation-induced apoptosis as well as DNA damage. These properties of PTL and low-dose radiation could be used to improve radiotherapy by killing more tumor cells and less normal cells...
March 3, 2017: Radiation Research
https://www.readbyqxmd.com/read/28393434/multivisceral-transplantation-for-abdominal-tumors-in-children-a-single-center-experience-and-review-of-the-literature
#15
Eliza Lee, Nicole Hodgkinson, Rima Fawaz, Khashayar Vakili, Heung Bae Kim
Standard management of intra-abdominal pediatric solid tumors requires complete resection. However, tumors with multiple organ and vascular involvement present a unique surgical challenge. We conducted a retrospective chart review of four patients, aged 2-14 years, undergoing MVT for intra-abdominal tumors with significant involvement of the visceral arteries and/or portomesenteric venous system at our institution. Indications for MVT included hepatocellular carcinoma, inflammatory myofibroblastic tumor, and two cases of hepatoblastoma...
April 9, 2017: Pediatric Transplantation
https://www.readbyqxmd.com/read/28393253/recombinant-adenovirus-of-sea-and-cd80-genes-driven-by-mmre-and-mouse-tert-promoter-induce-effective-antitumor-immune-responses-against-different-types-of-tumor-cells-in%C3%A2-vitro-and-in%C3%A2-vivo
#16
Shao-Yan Si, Jun-Li Liu, Jun-Lian Liu, Bing-Xin Xu, Jian-Zhong Li, Ya-Ya Qin, Shu-Jun Song
Staphylococcus enterotoxin A (SEA) is a powerful immunostimulant and can stimulate T cells bearing certain T-cell receptor β-chain variable regions when bound to major histocompatibility complex II molecules. SEA is widely used in research of antitumor therapy. The low affinity T-cell receptor (TCR) interaction with SEA in the absence of MHC class II antigens is sufficient for the induction of cytotoxicity but requires additional CD28/B7 signaling to result in proliferation of resting T cells. In this study, we constructed recombinant adenovirus (named as Ad-MMRE-mTERT-BIS) carrying membrane-expressing SEA (named as SEAtm) and CD80 driven by Myc-Max response elements (MMRE) and mouse telomerase reverse transcriptase (mTERT) promoter to reduce toxicity and to improve safety and efficiency...
April 6, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28388901/enhanced-efficacy-with-reduced-toxicity-of-chemotherapy-drug-5-fluorouracil-by-synergistic-treatment-with-abnormal-savda-munziq-from-uyghur-medicine
#17
Tao Yang, Mutalifu Aimaiti, Deqi Su, Weiwei Miao, Bin Zhou, Dilinuer Maimaitiyiming, Abdiryim Yusup, Halmurat Upur, Ainiwaer Aikemu
BACKGROUND: Abnormal Savda Munziq (ASMq) is a traditional prescription in Uyghur Medicine, and its treatment of complex diseases such as tumors and asthma has been proven to be effective in Uyghur medical clinical practice. The efficacy-enhancing and toxicity-reducing properties of ASMq were studied on mice with transplanted cervical cancer (U27) tumors, which were treated with 5-fluorouracil (5-FU) in this work. METHODS: To investigate the synergistic effect of ASMq and 5-FU on U27 cells, inhibitory effects on cell proliferation were determined through a MTT assay...
April 7, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28381106/atypical-cytologic-presentation-of-a-histiocytic-sarcoma-in-a-cavalier-king-charles-spaniel-dog
#18
Lorelei L Clarke, Lisa S Kelly, Bridget Garner, Cathy A Brown
A Cavalier King Charles Spaniel dog was presented because of a 10-d history of progressive vomiting, inappetence, and lethargy, with mild neurologic signs. Fine-needle aspirates of splenic nodules seen on ultrasound were suggestive of a carcinoma. On autopsy, a disseminated neoplasm was present in the lung, spleen, and adrenal glands. Additionally, there was a Chiari-like malformation of the skull with corresponding syringomyelia of the cranial spinal cord. Histologically, the neoplasm was comprised of a pleomorphic population of round cells with a high mitotic rate...
April 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28379573/the-effect-of-chronic-ammonia-exposure-on-acute-phase-proteins-immunoglobulin-and-cytokines-in-laying-hens
#19
Y N Wu, F F Yan, J Y Hu, H Chen, C M Tucker, A R Green, H W Cheng
Ammonia ( ) is a potential health hazard to both humans and animals, causing local and systemic low-grade inflammation based on its levels and exposure durations. The objective of this study was to examine the effects of 45 wk of exposure to 30 ppm NH 3 on the concentrations of acute-phase proteins, immunoglobulins, and cytokines in laying hens. At 18 wk of age, a group of Hy-Line W-36 hens was randomly assigned to 4-hen cages. These cages were evenly divided between 2 environmentally controlled chambers. At 25 wk of age, one chamber was maintained continuously with fresh air (NH 3 < 5 ppm; control group) and the other one was injected with NH 3 and controlled at 30 ppm (NH 3 group) for 45 wk...
March 31, 2017: Poultry Science
https://www.readbyqxmd.com/read/28374119/sentinel-lymph-node-mapping-using-spect-ct-and-gamma-probe-in-endometrial-cancer-an-analysis-of-parameters-affecting-detection-rate
#20
Samine Sahbai, Florin-Andrei Taran, Annette Staebler, Diethelm Wallwiener, Christian la Fougère, Sara Brucker, Helmut Dittmann
PURPOSE: SPECT/CT after pericervical injection of technetium-99 m-nanocolloid was shown to be suitable for sentinel lymph node (SLN) mapping in endometrial cancer (EC). The aim of this study was to analyze factors affecting successful SLN detection by means of SPECT/CT such as imaging findings, patient characteristics and tumor biology in a large cohort of patients. METHODS: One hundred and forty-five consecutive patients suffering from EC who received pre-surgical SLN mapping at our institution between 2011 and 2016 were included in this analysis...
April 3, 2017: European Journal of Nuclear Medicine and Molecular Imaging
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