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https://www.readbyqxmd.com/read/27923109/generation-of-domain-specific-monoclonal-antibodies-against-human-glutaredoxin3
#1
Xin Dai, Yanqing Li, Xiaohong Sun, Kai Cai, Qinwen Mao, Haibin Xia
Human Glutaredoxin3 (hGLRX3), which encodes a 37.4 kDa protein, possesses an N-terminal Trx homology domain followed by two tandem repeats of Grx domains. GLRX3 is expressed in many tissues and plays important roles in iron metabolism, antioxidant effect, cell proliferation and development, regulation of immune reaction, and tumorigenesis. The mechanisms underlying the biological function of GLRX3 are still not clear. To facilitate the functional research of GLRX3, in this study, monoclonal antibodies (MAbs) against hGLRX3 were produced by using purified prokaryotic recombinant 6His-hGLRX3 fusion protein as the immunogen...
December 6, 2016: Monoclonal Antibodies in Immunodiagnosis and Immunotherapy
https://www.readbyqxmd.com/read/27922687/immature-myeloid-derived-suppressor-cells-a-bridge-between-inflammation-and-cancer-review
#2
Caterina Musolino, Alessandro Allegra, Govanni Pioggia, Sebastiano Gangemi
Chronic inflammation is considered to be one of the hallmarks of tumor initiation and progression. Changes occurring in the microenvironment of progressing tumors resemble the process of chronic inflammation, which begins with ischemia followed by interstitial and cellular edema, appearance of immune cells, growth of blood vessels and tissue repair, and development of inflammatory infiltrates. Moreover, long‑term production and accumulation of inflammatory factors lead to local and systemic immunosuppression associated with cancer progression...
December 5, 2016: Oncology Reports
https://www.readbyqxmd.com/read/27922552/novel-use-of-all-trans-retinoic-acid-in-a-model-of-lipopolysaccharide-immunosuppression-to-decrease-the-generation-of-myeloid-derived-suppressor-cells-by-reducing-the-proliferation-of-cd34-precursor-cells
#3
Daiana Martire-Greco, Nahuel Rodriguez-Rodrigues, Luis A Castillo, María Belén Vecchione, Marcelo de Campos-Nebel, Marlina Córdoba Moreno, Roberto Meiss, Mónica Vermeulen, Veronica I Landoni, Gabriela C Fernandez
All-trans-Retinoic Acid (ATRA) is a derivative of vitamin A with anti-proliferative properties. Endotoxin shock and subsequent immunosuppression (IS) by lipopolysaccharide (LPS) stimulates myelopoiesis with expansion of myeloid-derived suppressor cells (MDSC). Since we have previously shown that ATRA reverses the IS state by decreasing functional MDSC, our aim was to investigate if ATRA was able to modulate MDSC generation by regulating myelopoiesis in murine hematopoietic organs. We found that ATRA administration in vivo and in vitro decreased the number of CD34+ precursor cells that were increased in IS mice...
November 25, 2016: Shock
https://www.readbyqxmd.com/read/27921437/-adaptation-of-adipose-tissue-to-weight-reduction-energy-restricted-diet-in-obese-individuals
#4
Vladimír Štich
Obesity is associated with a number of metabolic disorders that lead to the development of type 2 diabetes, hyperlipidemia and ultimately cardiovascular diseases. An important role in the pathogenesis of metabolic disorders accompanying obesity is probably played by the alterations of adipose tissue characteristics: metabolic, endocrine and immune functions. The key component of obesity treatment, the weight-reduction energy-restricted diet, leads not only to the reduction of weight (specifically fat mass), but also to correction of obesity accompanying metabolic disorders...
2016: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/27921309/hypoxia-inducible-factor-1%C3%AE-induced-interleukin-33-expression-in-intestinal-epithelia-contributes-to-mucosal-homeostasis-in-inflammatory-bowel-disease
#5
M Sun, C He, W Wu, G Zhou, F Liu, Y Cong, Z Liu
Intestinal epithelial cells (IECs), an important barrier to gut microbiota, are subject to low oxygen tension, particularly during intestinal inflammation. Hypoxia inducible factor-1α (HIF-1α) is expressed highly in the inflamed mucosa of inflammatory bowel disease (IBD) and functions as a key regulator in maintenance of intestinal homeostasis. However, how IEC-derived HIF-1α regulates intestinal immune responses in IBD is still not understood completely. We report here that the expression of HIF-1α and IL-33 was increased significantly in the inflamed mucosa of IBD patients as well as mice with colitis induced by dextran sulphate sodium (DSS)...
November 7, 2016: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/27921148/metabolites-deciphering-the-molecular-language-between-dcs-and-their-environment
#6
REVIEW
Lucía Minarrieta, Peyman Ghorbani, Tim Sparwasser, Luciana Berod
Dendritic cells (DCs) determine the outcome of the immune response based on signals they receive from the environment. Presentation of antigen under various contexts can lead to activation and differentiation of T cells for immunity or dampening of immune responses by establishing tolerance, primarily through the priming of regulatory T cells. Infections, inflammation and normal cellular interactions shape DC responses through direct contact or via cytokine signaling. Although it is widely accepted that DCs sense microbial components through pattern recognition receptors (PRRs), increasing evidence advocates for the existence of a set of signals that can profoundly shape DC function via PRR-independent pathways...
December 5, 2016: Seminars in Immunopathology
https://www.readbyqxmd.com/read/27921012/expression-of-the-gene-for-autotransporter-autb-of-neisseria-meningitidis-affects-biofilm-formation-and-epithelial-transmigration
#7
Jesús Arenas, Fernanda L Paganelli, Patricia Rodríguez-Castaño, Sara Cano-Crespo, Arie van der Ende, Jos P M van Putten, Jan Tommassen
Neisseria meningitidis is a Gram-negative bacterium that resides as a commensal in the upper respiratory tract of humans, but occasionally, it invades the host and causes sepsis and/or meningitis. The bacterium can produce eight autotransporters, seven of which have been studied to some detail. The remaining one, AutB, has not been characterized yet. Here, we show that the autB gene is broadly distributed among pathogenic Neisseria spp. The gene is intact in most meningococcal strains. However, its expression is prone to phase variation due to slipped-strand mispairing at AAGC repeats located within the DNA encoding the signal sequence and is switched off in the vast majority of these strains...
2016: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/27921011/mechanisms-of-infectivity-and-evasion-derived-from-microvesicles-cargo-produced-by-trypanosoma-cruzi
#8
REVIEW
Bruna C Borges, Isadora A Uehara, Laysa O S Dias, Paula C Brígido, Claudio V da Silva, Marcelo J B Silva
Cell invasion by the intracellular protozoans requires interaction of proteins from both the host and the parasite. Many parasites establish chronic infections, showing they have the potential to escape the immune system; for example, Trypanosoma cruzi is an intracellular parasite that causes Chagas disease. Parasite internalization into host cell requires secreted and surface molecules, such as microvesicles. The release of microvesicles and other vesicles, such as exosomes, by different eukaryotic organisms was first observed in the late twentieth century...
2016: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/27921007/long-term-response-to-nivolumab-and-acute-renal-failure-in-a-patient-with-metastatic-papillary-renal-cell-carcinoma-and-a-pd-l1-tumor-expression-increased-with-sunitinib-therapy-a-case-report
#9
Juan Ruiz-Bañobre, Urbano Anido, Ihab Abdulkader, José Antúnez-López, Rafael López-López, Jorge García-González
INTRODUCTION: Papillary renal cell carcinoma (PRCC), which represents around 20% of renal cell carcinomas, is a heterogeneous disease that includes different tumor types with several clinical and molecular phenotypes. Nivolumab, a fully human IgG4 programed cell death protein 1 immune checkpoint inhibitor antibody, has shown not only an overall survival advantage when compared to everolimus but also a relatively good side-effect profile among patients with previously treated advanced or metastatic renal cell carcinoma...
2016: Frontiers in Oncology
https://www.readbyqxmd.com/read/27920758/effectiveness-of-f18-fimbrial-antigens-released-by-a-novel-autolyzed-salmonella-expression-system-as-a-vaccine-candidate-against-lethal-f18-stec-infection
#10
Gayeon Won, John H Lee
Porcine edema disease (ED) caused by Shiga toxin 2e producing Escherichia coli expressing F18ab(+) fimbriae (F18ab(+)STEC) frequently occurs in post-weaned piglets, resulting in a significant economic loss in swine industries worldwide. In the present study, we proposed an efficient prevention scheme against ED in which the attenuated Salmonella Typhimurium inactivated by the E-mediated cell lysis to deliver target antigens, FedF and FedA, which function in fimbrial-mediated adhesion and as a major subunit of F18ab+fimbriae, respectively...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27920467/possible-therapeutic-role-of-ige-blockade-in-irritable-bowel-syndrome
#11
EDITORIAL
Eli Magen, Tinatin Chikovani
Omalizumab is a humanized monoclonal antibody that binds to the high-affinity type-I IgE Fc receptors on mast cells (MCs) and basophils, inhibiting the IgE immune pathway. Irritable bowel syndrome (IBS) is the most common functional gastrointestinal disorder, and dysregulation of the immune system likely contributes to its etiology and/or symptomatology. Colonic biopsies from patients with IBS demonstrate considerable increase in the number of degranulating MCs releasing histamine in proximity to nerves, and this event may underlie the common IBS symptom of abdominal pain...
November 21, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27920208/genetic-modification-of-er-hoxb8-osteoclast-precursors-using-crispr-cas9-as-a-novel-way-to-allow-studies-on-osteoclast-biology
#12
Irene Di Ceglie, Guus G H van den Akker, Giuliana Ascone, Bas Ten Harkel, Hans Häcker, Fons A J van de Loo, Marije I Koenders, Peter M van der Kraan, Teun J de Vries, Thomas Vogl, Johannes Roth, Peter L E M van Lent
Osteoclasts are cells specialized in bone resorption. Currently, studies on murine osteoclasts are primarily performed on bone marrow-derived cells with the use of many animals and limited cells available. ER-Hoxb8 cells are conditionally immortalized monocyte/macrophage murine progenitor cells, recently described to be able to differentiate toward functional osteoclasts. Here, we produced an ER-Hoxb8 clonal cell line from C57BL/6 bone marrow cells that strongly resembles phenotype and function of the conventional bone marrow-derived osteoclasts...
December 5, 2016: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/27920204/studies-on-the-detection-expression-glycosylation-dimerization-and-ligand-binding-properties-of-mouse-siglec-e
#13
Shoib Siddiqui, Flavio Schwarz, Stevan Springer, Zahra Khedri, Hai Yu, Lingquan Deng, Andrea Verhagen, Yuko Naito-Matsui, Weiping Jiang, Daniel Kim, Jie Zhou, Beibei Ding, Xi Chen, Nissi Varki, Ajit Varki
CD33-related Siglecs are a family of proteins widely expressed on innate immune cells. Binding of sialylated glycans or other ligands triggers signals that inhibit or activate inflammation. Immunomodulation by Siglecs has been extensively studied, but relationships between structure and functions are poorly explored. Here we present new data relating the structure and function of Siglec-E, the major CD33-related Siglec expressed on mouse neutrophils, monocytes, macrophages, and dendritic cells. We generated nine new rat monoclonal antibodies specific to mouse Siglec-E, with no cross-reactivity to Siglec-F...
December 5, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27919929/interleukin-37-and-dendritic-cells-treated-with-interleukin-37-plus-troponin-i-ameliorate-cardiac-remodeling-after-myocardial-infarction
#14
Ruirui Zhu, Haitao Sun, Kunwu Yu, Yucheng Zhong, Huairui Shi, Yuzhen Wei, Xin Su, Wenbin Xu, Quan Luo, Fangyuan Zhang, Zhengfeng Zhu, Kai Meng, Xiaoqi Zhao, Yuzhou Liu, Yi Mao, Peng Cheng, Xiaobo Mao, Qiutang Zeng
BACKGROUND: Excessive immune-mediated inflammatory reactions play a deleterious role in postinfarction ventricular remodeling. Interleukin-37 (IL-37) emerges as an inhibitor of both innate and adaptive immunity. However, the exact role of IL-37 and IL-37 plus troponin I (TnI)-treated dendritic cells (DCs) in ventricular remodeling after myocardial infarction (MI) remains elusive. METHODS AND RESULTS: MI was induced by permanent ligation of the left anterior descending artery...
December 5, 2016: Journal of the American Heart Association
https://www.readbyqxmd.com/read/27919759/identification-of-sea-bass-pigr-shows-its-interaction-with-vitellogenin-inducing-antibody-like-activities-in-hek-293t-cells
#15
Shuangshuang Yang, Shousheng Liu, Baozhen Qu, Yuan Dong, Shicui Zhang
Fish vitellogenin (Vg) has been shown to mediate the phagocytosis via interaction with a Fcγ-like phagocytic receptor on macrophages, but identification of such a receptor and its functional characterization remains lacking. In this study, we isolated a cDNA of polymeric immunoglobulin receptor (pIgR) from sea bass, which encoded a single-spanning transmembrane protein of 326 amino acids including a 21-amino acid signal peptide, an extracellular region, a transmembrane region and a 36-amino acid intracellular region included two Ig-like domains (ILDs), and was expressed in multiple lymphoid organs...
December 2, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/27919756/molecular-identification-and-functional-delineation-of-a-glutathione-reductase-homologue-from-disk-abalone-haliotis-discus-discus-insights-as-a-potent-player-in-host-antioxidant-defense
#16
H M L P B Herath, P D S U Wickramasinghe, S D N K Bathige, R G P T Jayasooriya, Gi-Young Kim, Myoung Ae Park, Chul Kim, Jehee Lee
Glutathione reductase (GSR) is an enzyme that catalyzes the biochemical conversion of oxidized glutathione (GSSG) into the reduced form (GSH). Since the ratio between the two forms of glutathione (GSH/GSSG) is important for the optimal function of GSH to act as an antioxidant against H2O2, the contribution of GSR as an enzymatic regulatory agent to maintain the proper ratio is essential. Abalones are marine mollusks that frequently encounter environmental factors that can trigger the overproduction of reactive oxygen species (ROS) such as H2O2...
December 2, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/27919749/in-vitro-vla-4-blockade-results-in-an-impaired-nk-cell-mediated-immune-surveillance-against-melanoma
#17
Ilaria Gandoglia, Federico Ivaldi, Paolo Carrega, Eric Armentani, Guido Ferlazzo, Gianluigi Mancardi, Nicole Kerlero de Rosbo, Antonio Uccelli, Alice Laroni
Natalizumab (NTZ) is a monoclonal antibody targeting the α4β1 integrin (CD49d/CD29), very late antigen-4 (VLA-4), which is approved for treatment of relapsing-remitting multiple sclerosis (RR-MS). A possible association between NTZ treatment and a higher risk of melanoma is under debate. Natural Killer (NK) cells, which express VLA-4, represent an innate barrier limiting spreading of melanoma under steady state conditions. Indeed, because of their expression of activating receptors, they are very efficient in recognizing and killing melanoma cells without the need of a previous priming...
December 2, 2016: Immunology Letters
https://www.readbyqxmd.com/read/27919524/demystifying-the-cytokine-network-mathematical-models-point-the-way
#18
REVIEW
Penelope A Morel, Robin E C Lee, James R Faeder
Cytokines provide the means by which immune cells communicate with each other and with parenchymal cells. There are over one hundred cytokines and many exist in families that share receptor components and signal transduction pathways, creating complex networks. Reductionist approaches to understanding the role of specific cytokines, through the use of gene-targeted mice, have revealed further complexity in the form of redundancy and pleiotropy in cytokine function. Creating an understanding of the complex interactions between cytokines and their target cells is challenging experimentally...
December 2, 2016: Cytokine
https://www.readbyqxmd.com/read/27919436/complement-in-basic-processes-of-the-cell
#19
Anaïs Jiménez-Reinoso, Ana V Marin, José R Regueiro
The complement system is reemerging in the last few years not only as key element of innate immunity against pathogens, but also as a main regulator of local adaptive responses, affecting dendritic cells as well as T and B lymphocytes. We review data showing that leucocytes are capable of significant autocrine synthesis of complement proteins, and express a large range of complement receptors, which in turn regulate their differentiation and effector functions while cross talking with other innate receptors such as Toll-like receptors...
December 2, 2016: Molecular Immunology
https://www.readbyqxmd.com/read/27919431/immunoreactivities-of-nf-%C3%AE%C2%BAb-il-1%C3%AE-and-il-1r-in-the-skin-of-chinese-brown-frog-rana-dybowskii
#20
Liqin Xi, Ruiqi Hu, Ting Guo, Yuhan Wang, Xia Sheng, Yingying Han, Zhengrong Yuan, Qiang Weng, Meiyu Xu
The cytokine interleukin-1 beta (IL-1β) is an evolutionarily conserved molecule that was originally identified in the immune system. Nuclear factor κB (NF-κB) plays a critical role in the activation of immune cells by upregulating the expression of many cytokines. In this study, we investigated the localization and expression level of IL-1β, its functional membrane receptor type I (IL-1R1) and NF-κB in the skin of Rana dybowskii during the breeding period and pre-hibernation. Histologically, the skin of Rana dybowskii consists of epidermis and dermis, and four kinds of cells were identified in the epidermis during the breeding period and pre-hibernation, while the dermis was composed of homogenous gel, mucous glands and granular glands...
December 2, 2016: Acta Histochemica
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