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Immunology Letters

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https://www.readbyqxmd.com/read/28736159/a-novel-ccr-2-tlr-2-triggered-signaling-in-murine-peritoneal-macrophages-intensifies-bacterial-staphylococcus-aureus-killing-by-reactive-oxygen-species-through-tnf-r1
#1
Ajeya Nandi, Biswadev Bishayi
Macrophages are remarkably versatile in their ability to recognize and respond to a wide range of stimuli by expressing a variety of surface and intracellular receptors and triggering multiple signal transduction pathways. The onset of microbial infection is primarily determined by the initial contacts made by the microbes with the host macrophages. Although there prevail a relationship between the chemokine receptor and Toll like receptors during disease, particularly TLR-2 and CCR-2 signaling interdependence on each other has not been yet investigated during acute staphylococcal infection...
July 20, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28736158/nanoliposomes-carrying-her2-neu-derived-peptide-ae36-with-cpg-odn-exhibit-therapeutic-and-prophylactic-activities-in-a-mice-tubo-model-of-breast-cancer
#2
Nastaran Barati, Amin Reza Nikpoor, Atefeh Razazan, Fatemeh Mosaffa, Ali Badiee, Atefeh Arab, Zahra Gholizadeh, Javad Behravan, Mahmoud Reza Jaafari
This study was designed to prepare and characterize nanoliposomal vaccine formulation encapsulating AE36 HER2/neu-derived peptide with or without CpG and evaluate the immunologic and therapeutic responses of that in BALB/c mice model of Her2 overexpressing breast cancer. AE36 was encapsulated in liposomes composed of DOTAP, DOPE and Cholesterol (DDC) or DD with. The formulations could induce both CD8+ and CD4+ responses and stimulate production of cytokines which was detected by Enzyme-linked immunospot assay (ELISpot) kits, cytotoxicity test and intracellular cytokine assay by flow cytometry...
July 20, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28728856/achaete-scute-complex-homologue-2-accelerates-the-development-of-sj%C3%A3-gren-s-syndrome-like-disease-in-the-nod-shiltj-mouse
#3
Sung-Min Kim, Jeong-Eun Kwon, Jin-Sil Park, Hyeon-Beom Seo, Kyung-Ah Jung, Young-Mee Moon, Jennifer Lee, Seung-Ki Kwok, Mi-La Cho, Sung-Hwan Park
Achaete-scute complex homologue 2 (Ascl2) has been reported to induce the differentiation and activation of follicular helper T (TFH) cells, which are essential for development of Sjögren's syndrome (SS). This study examined whether Ascl2 plays a role in the development of SS. NOD/ShiLtJ mice were injected with an Ascl2-overexpression vector, and the infiltration of lymphocytes into salivary and lacrimal glands was assessed. The expression of inflammatory cytokines and chemoattractants for T or B cells was measured...
July 17, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28728855/tissue-plasminogen-activator-tpa-signal-sequence-enhances-immunogenicity-of-mva-based-vaccine-against-tuberculosis
#4
Yiming Kou, Yongqing Xu, Zhilei Zhao, Jie Liu, Yang Wu, Qingrui You, Linli Wang, Feng Gao, Linjun Cai, Chunlai Jiang
Tuberculosis (TB) remains a serious health problem worldwide, and the only available vaccine, bacillus Calmette-Guérin (BCG), has shown highly variable efficacy in adults against TB. New vaccines are urgently needed, and the modified vaccinia virus Ankara (MVA)-based vaccine has emerged as one of the most promising candidates based on many preclinical and early clinical studies over the past few years. However, the maximum tolerable dose and strength of induced immune responses have limited the protective effect of MVA-based prophylactic vaccines...
July 17, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28720335/not-infection-with-parasitic-worms-but-rather-colonization-with-therapeutic-helminths
#5
LETTER
William Parker
No abstract text is available yet for this article.
July 16, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28720334/salmonella-infection-interplay-between-the-bacteria-and-host-immune-system
#6
REVIEW
Jonathan R Kurtz, J Alan Goggins, James B McLachlan
Salmonella infection causes morbidity and mortality throughout the world with the host immune response varying depending on whether the infection is acute and limited, or systemic and chronic. Additionally, Salmonella bacteria have evolved multiple mechanisms to avoid or subvert immunity to its own benefit and often the anatomical location of infection plays a role in both the immune response and bacterial fate. Here, we provide an overview of the interplay between the immune system and Salmonella, while discussing how different host and bacterial factors influence the outcome of infection...
July 15, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28716484/the-anti-tumor-activity-of-the-stat3-inhibitor-stx-0119-occurs-via-promotion-of-tumor-infiltrating-lymphocyte-accumulation-in-temozolomide-resistant-glioblastoma-cell-line
#7
Yasuto Akiyama, Chizu Nonomura, Tadashi Ashizawa, Akira Iizuka, Ryota Kondou, Haruo Miyata, Takashi Sugino, Koichi Mitsuya, Nakamasa Hayashi, Yoko Nakasu, Akira Asai, Mamoru Ito, Yoshio Kiyohara, Ken Yamaguchi
STAT3 is considered to be a key molecule to mediating tumor-induced immunosuppression in various manners at tumor sites, by acting through immune-regulatory cytokines derived from the tumor cells. Specific anti-STAT3 inhibitors have been developed using nude mouse models transplanted with human tumor cells. However, mouse systems cannot accurately represent the human immune response induced by STAT3 inhibitors, and more humanized therapeutic model based on human immune cells and tumors are needed. In the present study, an immune-deficient NOG mouse with the deletion of both MHC-class I and class II genes, an MHC-double knockout mouse (dKO-NOG), was developed and used to establish humanized immunotherapeutic model...
July 15, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28698104/pseudomonas-aeruginosa-quorum-sensing-modulates-immune-responses-an-updated-review-article
#8
REVIEW
Ashraf Kariminik, Majid Baseri-Salehi, Babak Kheirkhah
Pseudomonas aeruginosa is an opportunistic bacterium which induces some complications in immunocompromised patients. Pseudomonas aeruginosa is a quorum-sensing using bacterium which regulates its genes expression. The bacterium uses two famous pathways for quorum sensing entitled LasI/LasR and RhlI/RhlR systems. It has been documented that the bacteria which use quorum sensing are able to overcome immune responses. This review article aims to present recent information regarding the effects of Pseudomonas aeruginosa quorum sensing systems on the host immune responses...
July 8, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28690187/evaluating-of-oct-4-and-nanog-was-differentially-regulated-by-a-new-derivative-indole-in-leukemia-cell-line
#9
Mojgan Noroozi Karimabad, Mehdi Mahmoodi, Abdollah Jafarzadeh, Ali Darehkordi, Mohammad Reza Hajizadeh, Hossein Khorramdelazad, Ahmad Reza Sayadi, Fariba Rahmani, Gholamhossein Hassanshahi
BACKGROUND: The potential exists to improve treatment through characterization of tumor stem cells and identification of therapeutic targets Using OCT-4 and NANOG genes. Here we have synthesized and investigated the potential of; New Indole-3-carbaldehyde derivative (NI-3-CD) in inhibiting the expression of self-renewal regulatory factors and cancer stem cell gene in a leukemia cell line NB4. METHODOLOGY: The NB4 cells were cultured in RPMI1640 medium contained NI-3-CD and I3F (15...
July 8, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28690186/ccl2-promoter-hypomethylation-is-associated-with-gout-risk-in-chinese-han-male-population
#10
Bin Li, Xiaoying Chen, Yuting Jiang, Yong Yang, Jie Zhong, Cong Zhou, Haochang Hu, Shiwei Duan
OBJECTIVES: C-C motif chemokine ligand 2 (CCL2) encodes a chemokine which amplifies and maintains inflammation through chemokine-cytokine networks. Gout is a type of painful inflammation arthritis in response to the deposition of monosodium urate (MSU) crystals in joints. The purpose of this study was to figure out the role of CCL2 promoter methylation in gout. METHODS: A quantitative methylation-specific polymerase chain reaction (qMSP) was used to measure CCL2 promoter methylation in 93 gout patients and 101 healthy controls, respectively...
July 6, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28684274/construction-of-high-level-prokaryotic-expression-and-purification-system-of-pd-l1-extracellular-domain-by-using-escherichia-coli-host-cell-machinery
#11
Muhammad Kalim, Jie Chen, Shenghao Wang, Caiyao Lin, Saif Ullah, Keying Liang, Qian Ding, Shuqing Chen, Jinbiao Zhan
Programmed cell death 1 ligand 1 (PD-L1) is a trans-membrane protein highly expressed on the membrane of cancer cell, which binds inhibitory receptor of PD-1 on the T cells and attenuates anti-tumor immune response.The strategy of blocking PD1 and PD-L1 interaction has been widely used for anti-cancer drug development. The DNA encoding extracellular domain of PD-L1wascloned and expressed with the pET30(+) and Escherichia coli BL21(DE3) system. Cloning of PD-L1 extracellular domain was confirmed by PCR and enzymatic digestion...
July 3, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28577901/functional-studies-of-chronic-lymphocytic-leukemia-b-cells-expressing-%C3%AE-2-integrin-type-complement-receptors-cr3-and-cr4
#12
Barbara Uzonyi, Bernadett Mácsik-Valent, Szilvia Lukácsi, Richárd Kiss, Katalin Török, Mariann Kremlitzka, Zsuzsa Bajtay, Judit Demeter, Csaba Bödör, Anna Erdei
The expression and role of CR3 (CD11b/CD18) and CR4 (CD11c/CD18) in B cells are not yet explored in contrast to myeloid cells, where these β2-integrin type receptors are known to participate in various cellular functions, including phagocytosis, adherence and migration. Here we aimed to reveal the expression and role of CR3 and CR4 in human B cells. In B cells of healthy donors CR3 and CR4 are scarcely expressed. However, two patients with chronic lymphocytic leukemia (CLL) characterized by a peculiar immune-phenotype containing both CD5-positive and CD5-negative B cell populations made possible to study these molecules in distinct B cell subsets...
May 31, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28577900/a-novel-prophylaxis-with-c1-inhibitor-concentrate-in-hereditary-angioedema-during-erythema-marginatum
#13
Kinga Viktória Kőhalmi, Nóra Veszeli, László Cervenak, Lilian Varga, Henriette Farkas
BACKGROUND: Hereditary angioedema with C1-inhibitor deficiency (C1-INH-HAE) is a rare, autosomal dominant disorder. The characteristic episodes of subcutaneous/submucosal edema formation may be preceded by erythema marginatum (EM) - the occurrence of a 'map-like' pattern on the skin. EM can occur as an isolated finding or accompanying a hereditary angiooedema (HAE) attack as well. Nevertheless, it is unknown whether a HAE attack can be prevented by the proper prophylactic treatment during EM...
May 31, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28554713/different-capacity-of-in-vitro-generated-myeloid-dendritic-cells-of-newborns-of-healthy-and-allergic-mothers-to-respond-to-probiotic-strain-e-coli-o83-k24-h31
#14
Lenka Súkeníková, Viktor Černý, Olga Novotná, Petra Petrásková, Kristýna Boráková, Libuše Kolářová, Ludmila Prokešová, Jiří Hrdý
Allergic diseases belong to one of the most common diseases with steadily increasing incidence even among young children. There is an urgent need to identify a prognostic marker pointing to increased risk of allergy development enabling early preventive measures introduction. It has been shown that administration of selected probiotic strains or mixtures could prevent allergy development. In our study, we have tested the capacity of probiotic strain Escherichia coli O83:K24:H31 (E. coli O83) to promote dendritic cell (DC) maturation and polarisation of immune responses...
May 26, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28554712/the-role-of-cr3-cd11b-cd18-and-cr4-cd11c-cd18-in-complement-mediated-phagocytosis-and-podosome-formation-by-human-phagocytes
#15
Szilvia Lukácsi, Zsuzsa Nagy-Baló, Anna Erdei, Noémi Sándor, Zsuzsa Bajtay
CR3 and CR4 belong to the family of β2-integrins and play an important role in phagocytosis, cellular adherence and migration. CR3 and CR4 are generally expected to mediate similar functions due to their structural homology, overlapping ligand specificity and parallel expression on human phagocytes. Although the different signalling pathways of these receptors suggest distinct functions, possible differences are just being revealed. Previously we proved that CR3 plays a key role in the uptake of iC3b-opsonized particles by human dendritic cells...
May 26, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28526582/mait-cells-a-tailor-made-mate-in-the-ancient-battle-against-infectious-diseases
#16
REVIEW
Marcela de Lima Moreira, Moriya Tsuji, Alexandra Jane Corbett, Márcio Sobreira Silva Araújo, Andréa Teixeira-Carvalho, Olindo Assis Martins-Filho, Vanessa Peruhype-Magalhães, Jordana Grazziela Coelho-Dos-Reis
It has been almost two decades since the discovery of mucosal-associated invariant T (MAIT)-cells. Several advances in the field have been made such as the discovery of the antimicrobial activity of MAIT-cells, the abundance of these cells in human mucosa and in liver and the discovery of ligands able to bind MR1 and activate MAIT-cells. MAIT-cells are a unique subset of innate-like T-cells that express a canonical T-cell receptor with the alpha chain containing hAV7S2 and AJ33 in humans (TCRVα7.2Jα33) and respond to bacterial/fungus vitamin B2 metabolites by an MR1-dependent pathway...
May 16, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28526581/a-novel-mouse-model-of-chronic-prostatitis-chronic-pelvic-pain-syndrome-induced-by-immunization-of-special-peptide-fragment-with-aluminum-hydroxide-adjuvant
#17
Farhan Ullah Khan, Awais Ullah Ihsan, Waqas Nawaz, Muhammad Zahid Khan, Mengqi Yang, Gang Wang, Xiaoqian Liao, Lei Han, Xiaohui Zhou
OBJECTIVES: CP/CPPS is a commonly observed distress in male patients. Because of its little-known etiology, no effective therapy has been developed which has promising outcomes. Therefore, there is a need to develop a valid model which can mimic the etiology of CP/CPPS. MATERIALS AND METHODS: Fifty male C57BL/6 mice were randomly and averagely divided into 5 groups of 10 mice each. The control group was injected with 0.9% NaCl solution. Aluminum hydroxide and T2 groups were injected with aluminum hydroxide adjuvant and T2 peptide...
May 16, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28526580/biomarkers-for-rheumatoid-arthritis-from-molecular-processes-to-diagnostic-applications-current-concepts-and-future-perspectives
#18
REVIEW
Britt Nakken, Gábor Papp, Vidar Bosnes, Margit Zeher, György Nagy, Peter Szodoray
Early diagnosis and immediately started appropriate treatment are mandatory for the prevention of radiographic progression, functional disability and unfavourable disease outcome in rheumatoid arthritis (RA). The current classification criteria for RA include two different types of biomarkers representing inflammatory processes, such as C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR) or immune processes including autoantibodies, such as rheumatoid factor (RF) and antibodies against citrullinated proteins (ACPA)...
May 16, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28511837/immunomodulatory-activity-of-recombinant-%C3%AE-gliadin-conjugated-to-cholera-toxin-in-dq8-transgenic-mice
#19
Stefano Rossi, Diomira Luongo, Francesco Maurano, Paolo Bergamo, Mauro Rossi
Coeliac disease (CD) is characterized by an intestinal lesion sustained by an abnormal mucosal T-cell response to wheat gliadin. An immunological approach that is able to suppress this immune response is a perspective worth pursuing. Several strategies of antigen administration have been aimed at the downregulation of pathogenic T-cells. In particular, we previously reported a significant suppression of the systemic cell-mediated response toward wheat gliadin in DQ8 transgenic mice receiving nasally a recombinant α-gliadin...
May 13, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28495513/high-hydrostatic-pressure-affects-antigenic-pool-in-tumor-cells-implication-for-dendritic-cell-based-cancer-immunotherapy
#20
Linda Urbanova, Nada Hradilova, Irena Moserova, Sarka Vosahlikova, Lenka Sadilkova, Michal Hensler, Radek Spisek, Irena Adkins
High hydrostatic pressure (HHP) can be used to generate dendritic cell (DC)-based active immunotherapy for prostate, lung and ovarian cancer. We showed here that HHP treatment of selected human cancer cell lines leads to a degradation of tumor antigens which depends on the magnitude of HHP applied and on the cancer cell line origin. Whereas prostate or ovarian cell lines displayed little protein antigen degradation with HHP treatment up to 300MPa after 2h, tumor antigens are hardly detected in lung cancer cell line after treatment with HHP 250MPa at the same time...
May 8, 2017: Immunology Letters
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