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https://www.readbyqxmd.com/read/28109145/-short-term-use-of-rapamycin-combined-with-tregs-prolongs-mouse-cardiac-graft-survival-but-attenuates-recipient-s-anti-tumor-immunity
#1
Ting Yan, Chen Luo, Xianmo Yang, Lei Ji, Shiqiao Luo
Objective To study the effect of short-term use of rapamycin(Rap) combined with regulatory T cells (Tregs) on the long-time survival of allogeneic mouse cardiac transplant, and its impact on the anti-tumor immunity of recipient. MethodsMouse Tregs were purified from recipients' spleen by magnetic activated cell sorting (MACS), and expanded by CD3/CD28 monoclonal antibody immunomagnetic beads and 2000 U/mL recombinant mouse IL-2 (rmIL-2) ex vivo. The purity was tested by fluorescence-activated cell sorting (FACS)...
February 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28109143/-decreased-number-and-immune-activity-of-splenic-t-lymphocytes-in-mice-exposed-to-hypoxia-at-high-altitude
#2
Xiaona Zhang, Jidong Li, Fangjie Hu, Shilan Gao, Xiaoyan Pu, Sheng Yong
Objective To explore the changes of splenic T lymphocyte subsets and functions in mice under high-altitude hypoxic conditions. Methods After mice were exposed to an altitude of 400 m, 2200 m and 4200 m for 30 days, ELISA was used to detect the concentrations of interleukin-4 (IL-4) and interferon-γ (IFN-γ) in the cultured splenocyte supernatant; MTT assay was used to analyze the proliferation of splenic T lymphocytes; flow cytometry was performed to examine the alterations of splenic T lymphocyte subsets...
February 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28108766/immunosuppressive-myeloid-derived-suppressor-cells-are-increased-in-splenocytes-from-cancer-patients
#3
Kimberly R Jordan, Puja Kapoor, Eric Spongberg, Richard P Tobin, Dexiang Gao, Virginia F Borges, Martin D McCarter
Myeloid-derived suppressor cells (MDSCs) are a heterogeneous population of myeloid cells that are increased in the peripheral blood of cancer patients and limit productive immune responses against tumors. Immunosuppressive MDSCs are well characterized in murine splenic tissue and are found at higher frequencies in spleens of tumor-bearing mice. However, no studies have yet analyzed these cells in parallel human spleens. We hypothesized that MDSCs would be increased in the spleens of human cancer patients, similar to tumor-bearing mice...
January 20, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28108583/contribution-of-methionine-sulfoxide-reductase-b-msrb-to-francisella-tularensis-infection-in-mice
#4
Shib Shankar Saha, Masanori Hashino, Jin Suzuki, Akihiko Uda, Kenta Watanabe, Takashi Shimizu, Masahisa Watarai
The essential mechanisms and virulence factors enabling Francisella species to replicate inside host macrophages are not fully understood. Methionine sulfoxide reductase (Msr) is an antioxidant enzyme that converts oxidized methionine into methionine. Francisella tularensis carries msrA and msrB in different parts of its chromosome. In this study, single and double mutants of msrA and msrB were constructed, and the characteristics of these mutants were investigated. The msrB mutant exhibited decreased in vitro growth, exogenous oxidative stress resistance and intracellular growth in macrophages, whereas the msrA mutant displayed little difference with wild-type strain...
January 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/28108555/immune-dysregulation-may-contribute-to-disease-pathogenesis-in-spinal-muscular-atrophy-mice
#5
Marc-Olivier Deguise, Yves De Repentigny, Emily McFall, Nicole Auclair, Subash Sad, Rashmi Kothary
Spinal muscular atrophy (SMA) has long been solely considered a neurodegenerative disorder. However, recent work has highlighted defects in many other cell types that could contribute to disease aetiology. Interestingly, the immune system has never been extensively studied in SMA. Defects in lymphoid organs could exacerbate disease progression by neuroinflammation or immunodeficiency. Smn depletion led to severe alterations in the thymus and spleen of two different mouse models of SMA. The spleen from Smn depleted mice was dramatically smaller at a very young age and its histological architecture was marked by mislocalization of immune cells in the Smn(2B/-) model mice...
January 19, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28107482/a-circulating-microrna-signature-predicts-age-based-development-of-lymphoma
#6
Afshin Beheshti, Charles Vanderburg, J Tyson McDonald, Charusheila Ramkumar, Tatenda Kadungure, Hong Zhang, Ronald B Gartenhaus, Andrew M Evens
Extensive epidemiological data have demonstrated an exponential rise in the incidence of non-Hodgkin lymphoma (NHL) that is associated with increasing age. The molecular etiology of this remains largely unknown, which impacts the effectiveness of treatment for patients. We proposed that age-dependent circulating microRNA (miRNA) signatures in the host influence diffuse large B cell lymphoma (DLBCL) development. Our objective was to examine tumor development in an age-based DLBCL system using an inventive systems biology approach...
2017: PloS One
https://www.readbyqxmd.com/read/28105799/molecular-characterization-and-functional-analysis-of-a-piscidin-gene-in-large-yellow-croaker-larimichthys-crocea
#7
Jing Yang, Xin-Jiang Lu, Fang-Chao Chai, Jiong Chen
The piscidin family, which includes potent antimicrobial peptides with broad-spectrum activity, plays an important role in the innate immune system of fish. In this study, we cloned piscidin-5-like type 3 (Lcpis5lt3) in large yellow croaker (Larimichthys crocea). Multiple alignments with other known piscidins revealed amino acid conservation throughout the fish, especially at the signal peptide (22 amino acids). The phylogenetic tree confirmed that Lcpis5lt3 and large yellow croaker piscidin-5-like proteins were grouped together to form a branch...
November 18, 2016: Zool Res
https://www.readbyqxmd.com/read/28105760/aerosol-based-airway-epithelial-cell-delivery-improves-airway-regeneration-and-repair
#8
E Kardia, E S Ch'ng, B H Yahaya
Aerosol-based cell therapy has emerged as a novel and promising therapeutic strategy for treating lung diseases. The goal of this study was to determine the safety and efficacy of aerosol-based airway epithelial cell (AEC) delivery in the setting of acute lung injury induced by tracheal brushing in rabbit. 24 hours following injury, exogenous rabbit AECs were labelled with BrdU and aerosolized using the MicroSprayer® Aerosolizer into the injured airway. Histopathological assessments of the injury in the trachea and lungs were quantitatively scored (1 and 5 d after cell delivery)...
January 20, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28105392/in-vivo-long-term-biodistribution-excretion-and-toxicology-of-pegylated-transition-metal-dichalcogenides-ms2-m-mo-w-ti-nanosheets
#9
Jiali Hao, Guosheng Song, Teng Liu, Xuan Yi, Kai Yang, Liang Cheng, Zhuang Liu
With unique 2D structures and intriguing physicochemical properties, various types of transition metal dichalcogenides (TMDCs) have attracted much attention in many fields including nanomedicine. Hence, it is of great importance to carefully study the in vivo biodistribution, excretion, and toxicology profiles of different TMDCs, and hopefully to identify the most promising type of TMDCs with low toxicity and fast excretion for further biomedical applications. Herein, the in vivo behaviors of three representative TMDCs including molybdenum dichalcogenides (MoS2), tungsten dichalcogenides (WS2), and titanium dichalcogenides (TiS2) nanosheets are systematically investigated...
January 2017: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/28105109/effect-of-ginseng-polysaccharides-on-nk-cell-cytotoxicity-in-immunosuppressed-mice
#10
Yaoyao Sun, Mofei Guo, Yuanjie Feng, Huifang Zheng, Ping Lei, Xiande Ma, Xiaowei Han, Hongquan Guan, Diandong Hou
The aim of the present study was to investigate the effects of Ginseng polysaccharides (GPS) on natural killer (NK) cell cytotoxicity in immunosuppressed mice. Cyclophosphamide (Cy) was used to construct an immunosuppressed mouse model. The mice in each group were submitted to gavages with 200 or 400 mg/kg GPS every day for 10 days. Magnetic-activated cell sorting was used to isolate spleen NK cells, and the NK cell cytotoxicity, blood distribution, expression levels of perforin and granzyme, and the mRNA expression levels of interferon (IFN)-γ were detected...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28104976/clinical-role-of-non-invasive-assessment-of-portal-hypertension
#11
EDITORIAL
Massimo Bolognesi, Marco Di Pascoli, David Sacerdoti
Measurement of portal pressure is pivotal in the evaluation of patients with liver cirrhosis. The measurement of the hepatic venous pressure gradient represents the reference method by which portal pressure is estimated. However, it is an invasive procedure that requires significant hospital resources, including experienced staff, and is associated with considerable cost. Non-invasive methods that can be reliably used to estimate the presence and the degree of portal hypertension are urgently needed in clinical practice...
January 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28103709/radiation-absorbed-dose-estimates-for-18f-bpa-pet
#12
Yuzuru Kono, Hiroaki Kurihara, Hiroshi Kawamoto, Naoko Yasui, Naoki Honda, Hiroshi Igaki, Jun Itami
Background Boron neutron capture therapy (BNCT) is a molecular radiation therapy approach based on the (10)B (n, α) (7)Li nuclear reaction in cancer cells. In BNCT, delivery of (10)B in the form of 4-borono-phenylalanine conjugated with fructose (BPA-fr) to the cancer cells is important. The PET tracer 4-borono-2-18F-fluoro-phenylalanine (FBPA) has been used to predict the accumulation of BPA-fr before BNCT. Purpose To determine the biodistribution and dosimetric parameters in 18F-BPA PET/CT studies. Material and Methods Human biokinetic data were obtained during clinical 18F-BPA PET studies between February and June 2015 at one institution...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28103263/splenic-cd4-t-cells-in-progressive-visceral-leishmaniasis-show-a-mixed-effector-regulatory-phenotype-and-impair-macrophage-effector-function-through-inhibitory-receptor-expression
#13
Audrie A Medina-Colorado, Elvia Y Osorio, Omar A Saldarriaga, Bruno L Travi, Fanping Kong, Heidi Spratt, Lynn Soong, Peter C Melby
Visceral leishmaniasis (VL), caused by infection with the intracellular protozoan Leishmania donovani, is a chronic progressive disease with a relentlessly increasing parasite burden in the spleen, liver and bone marrow. The disease is characterized by fever, splenomegaly, cachexia, and pancytopenia, and progresses to death if not treated. Control of Leishmania infection is mediated by Th1 (IFNγ-producing) CD4+ T cells, which activate macrophages to produce nitric oxide and kill intracellular parasites. However, despite expansion of CD4+ T cells and increased IFNγ expression in the spleen, humans with active VL do not control the infection...
2017: PloS One
https://www.readbyqxmd.com/read/28102062/the-role-of-il-17-in-a-lipopolysaccharide-induced-rhinitis-model
#14
Jun Sang Bae, Ji Hye Kim, Eun Hee Kim, Ji Hun Mo
PURPOSE: Lipopolysaccharide (LPS) is a cell wall component of Gram-negative bacteria and important for pro-inflammatory mediators. This study aimed to establish a rhinitis model using ovalbumin (OVA) and LPS in order to evaluate the role of interleukin (IL)-17 in the pathogenesis of an LPS-induced non-eosionophilic rhinitis model. METHODS: Mice were divided into 4 groups and each group consisted of 10 mice (negative control group, allergic rhinitis model group, 1-μg LPS treatment group, and 10-μg LPS treatment group)...
March 2017: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/28102058/neonatal-immune-state-is-influenced-by-maternal-allergic-rhinitis-and-associated-with-regulatory-t-cells
#15
Lu Tan, Jing Ou, Zezhang Tao, Yonggang Kong, Yu Xu
PURPOSE: Maternal influences contribute to the origin of allergic diseases, but the mechanisms are not clear. The current literature prompted the role of epigenetics in the development of allergic diseases. We sought to investigate the roles of regulatory T (Treg) cells and Forkhead box p3 (Foxp3) DNA methylation in the process of maternal transmission of allergic rhinitis (AR) susceptibility. METHODS: BALB/c female mice (AR mother) were sensitized by intraperitoneal injection of Dermatophagoides pteronyssinus (Der p) 1 on day 1 and 7...
March 2017: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/28101351/pro-inflammatory-effect-of-a-traditional-chinese-medicine-formula-with-potent-anti-cancer-activity-in-vitro-impedes-tumor-inhibitory-potential-in-vivo
#16
Lei Xia, Maksym Plachynta, Tangjingjun Liu, Xiao Xiao, Jialei Song, Xiaogang Li, Mu Zhang, Yao Yao, Heng Luo, Xiaojiang Hao, Yaacov Ben-David
Medicinal formulas are a part of the complex discipline of traditional Chinese medicine that has been used for centuries in China and East Asia. These formulas predominantly consist of the extracts isolated from herbal plants, animal parts and medicinal minerals. The present study aimed to investigate the impact of 150 formulas, used as non-prescription drugs in China, on the treatment of cancer. A formula was identified, C54, commonly used to treat sore throats, which exhibited marked growth inhibition in vitro, associated with cell cycle arrest and apoptosis...
December 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28101230/effect-of-il-17-in-the-development-of-colon-cancer-in-mice
#17
Lijuan Yang, Hao Liu, Lili Zhang, Jie Hu, Haixia Chen, Lei Wang, Xiaolin Yin, Quanhai Li, Yixin Qi
Cytokine therapy is commonly used for tumor immunotherapy. Although early studies focused directly on the tumor, current investigations are more attentive of the tumor microenvironment. Various immune cells and related cytokines in the tumor microenvironment play an important role in the occurrence and development of tumor. Interleukin (IL)-17 is the characteristic cytokine produced by Th17 cells. IL-17 has been associated with various immune responses. The results of previous studies showed that IL-17 can significantly reduce the size of transplanted tumors in tumor-bearing mice, albeit it has no effect on the survival time of mice...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28100996/intrapancreatic-accessory-spleen-a-diagnosis-not-to-forget
#18
Susana Marques, Miguel Bispo, Lariño Noia
A 69-year-old male patient was incidentally diagnosed with a 5-mm lesion in the pancreatic tail by endoscopic ultrasound (EUS). After contrast-enhanced EUS and EUS-elastography, all imaging features were highly suggestive of a benign pancreatic solid lesion such as an intrapancreatic accessory spleen (IPAS) or a benign neuroendocrine tumor. Interposition of the splenic artery precluded EUS-guided fine-needle aspiration (FNA). When an asymptomatic pancreatic mass is detected, IPAS diagnosis should be considered, and, if EUS-FNA is infeasible, contrast-enhanced EUS and EUS-elastography are useful tools to differentiate a pancreatic benign lesion as IPAS from a malignancy, with avoidance of unnecessary surgery...
September 2016: Case Reports in Gastroenterology
https://www.readbyqxmd.com/read/28100269/a-spleen-tyrosine-kinase-inhibitor-attenuates-the-proliferation-and-migration-of-vascular-smooth-muscle-cells
#19
Hyang-Hee Seo, Sang Woo Kim, Chang Youn Lee, Kyu Hee Lim, Jiyun Lee, Eunhyun Choi, Soyeon Lim, Seahyoung Lee, Ki-Chul Hwang
BACKGROUND: Pathologic vascular smooth muscle cell (VSMC) proliferation and migration after vascular injury promotes the development of occlusive vascular disease. Therefore, an effective chemical agent to suppress aberrant proliferation and migration of VSMCs can be a potential therapeutic modality for occlusive vascular disease such as atherosclerosis and restenosis. To find an anti-proliferative chemical agent for VSMCs, we screened an in-house small molecule library, and the selected small molecule was further validated for its anti-proliferative effect on VSMCs using multiple approaches, such as cell proliferation assays, wound healing assays, transwell migration assays, and ex vivo aortic ring assay...
January 18, 2017: Biological Research
https://www.readbyqxmd.com/read/28099857/a-systems-approach-reveals-mavs-signaling-in-myeloid-cells-as-critical-for-resistance-to-ebola-virus-in-murine-models-of-infection
#20
Mukta Dutta, Shelly J Robertson, Atsushi Okumura, Dana P Scott, Jean Chang, Jeffrey M Weiss, Gail L Sturdevant, Friederike Feldmann, Elaine Haddock, Abhilash I Chiramel, Sanket S Ponia, Jonathan D Dougherty, Michael G Katze, Angela L Rasmussen, Sonja M Best
The unprecedented 2013-2016 outbreak of Ebola virus (EBOV) resulted in over 11,300 human deaths. Host resistance to RNA viruses requires RIG-I-like receptor (RLR) signaling through the adaptor protein, mitochondrial antiviral signaling protein (MAVS), but the role of RLR-MAVS in orchestrating anti-EBOV responses in vivo is not known. Here we apply a systems approach to MAVS(-/-) mice infected with either wild-type or mouse-adapted EBOV. MAVS controlled EBOV replication through the expression of IFNα, regulation of inflammatory responses in the spleen, and prevention of cell death in the liver, with macrophages implicated as a major cell type influencing host resistance...
January 17, 2017: Cell Reports
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