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https://www.readbyqxmd.com/read/29245178/transcriptional-regulation-of-cd4-t-cell-differentiation-in-experimentally-induced-arthritis-and-rheumatoid-arthritis
#1
REVIEW
Yuya Kondo, Masahiro Yokosawa, Shunta Kaneko, Kotona Furuyama, Seiji Segawa, Hiroto Tsuboi, Isao Matsumoto, Takayuki Sumida
Rheumatoid arthritis (RA) is a chronic inflammatory disorder characterized by infiltration of the joint synovium by activated inflammatory cells. CD4+ T cells form a large proportion of the inflammatory cells invading the synovial tissue, and are involved in the RA pathological process. In general, CD4+ T cells differentiate into various T helper (Th) cell subsets and acquire the functional characterization to respond to specific pathogens, and also mediated some autoimmune disorders such as RA. Because the differentiation of Th cell subsets is determined by the expression of specific transcription factors in response to cytokine environment, these transcription factors is considered to have a role in pathology of RA...
December 15, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29244203/pediatric-tolerogenic-dcs-expressing-cd4-and-immunoglobulin-like-transcript-receptor-ilt-4-secrete-il-10-in-response-to-fc-and-adenosine
#2
Alessandra Franco, Jeetendra Kumar, Gene Lin, Negar Behnamfar, Li-En Hisieh, Chisato Shimizu, Adriana H Tremoulet, Jane C Burns, Joel Linden
We characterized a novel population of tolerogenic myeloid dendritic cells (tmDCs) defined as CD11c+ CD11b+ CD14+ CD4+ and immunoglobulin-like transcript receptor (ILT)-4+ that are significantly more abundant in the circulation of infants and young children than in adults. TmDCs secrete the immunosuppressive lymphokine interleukin (IL)-10 when stimulated with the heavy constant region of immunoglobulins (Fc) and express high levels of the adenosine A2A receptor (A2A R), which, when activated by adenosine, inhibits the release of pro-inflammatory cytokines from most immune cells...
December 15, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/29244194/arid5a-stabilizes-ox40-mrna-in-murine-cd4-t-cells-by-recognizing-a-stem-loop-structure-in-its-3-utr
#3
Hamza Hanieh, Kazuya Masuda, Hozaifa Metwally, Jaya P Chalise, Maged Mohamed, Kishan K Nyati, Daron M Standley, Songling Li, Mitsuru Higa, Mohammad M Zaman, Tadamitsu Kishimoto
AT-rich interactive domain-containing protein 5a (Arid5a) is an RNA-binding protein (RBP) required for autoimmunity via stabilization of interleukin-6 (Il6) and signal transducer and activator of transcription 3 (STAT3) mRNAs. However, the roles of Arid5a in Th17 cells and its association with autoimmunity remains unknown. Here, we show that the levels of Arid5a and OX40 are correlated in CD4+ T cells under Th17 conditions in an IL-6-dependent manner. Lack of Arid5a in T cells reduced OX40 expression levels and repressed IL-17 production in response to OX40 ligation...
December 15, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/29244143/impact-of-hiv-1-minority-variants-on-the-virus-response-to-a-rilpivirine-based-first-line-regimen
#4
Stéphanie Raymond, Florence Nicot, Coralie Pallier, Pantxika Bellecave, Anne Maillard, Mary Anne Trabaud, Laurence Morand-Joubert, Audrey Rodallec, Corinne Amiel, Thomas Mourez, Laurence Bocket, Agnès Beby-Defaux, Magali Bouvier-Alias, Sidonie Lambert-Niclot, Charlotte Charpentier, Brice Malve, Audrey Mirand, Julia Dina, Hélène Le Guillou-Guillemette, Stéphanie Marque-Juillet, Anne Signori-Schmuck, Francis Barin, Ali Si-Mohamed, Véronique Avettand Fenoel, Catherine Roussel, Vincent Calvez, Karine Saune, Anne Geneviève Marcelin, Christophe Rodriguez, Diane Descamps, Jacques Izopet
Background: Minority resistant variants of HIV-1 could influence the virological response to treatment based on non-nucleoside reverse transcriptase (RT) inhibitors. Data on minority rilpivirine-resistant variants are scarce. This study used next-generation sequencing (NGS) to identify patients harbouring minority resistant variants to nucleos(t)ide and non-nucleoside RT inhibitors and to assess their influence on the virological response (VR). Methods: All the subjects, 541 HIV-1-infected patients being treated at 24 French virology laboratories, started their first line regimen containing rilpivirine between 2012 and 2015...
December 13, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29243545/the-role-of-macrophages-in-the-differentiation-process-of-ureteral-polyps
#5
Yue-Hui Wang, Tian-Qi Zhang, Ji-Ning Fu, Ying Liu, Hai-Yan Jia
Objective To evaluate the role of macrophage infiltration in the differentiation process of ureteral polyps and cancers. Methods This retrospective immunohistochemical study analysed archival samples of pathologically-confirmed specimens of low- and high-grade ureteral cancer, ureteral papilloma and ureteral polyps. The samples were immunohistochemically stained for cluster of differentiation (CD)4, CD8, CD16, CD25, CD56 and CD68 using immunofluorescence in order to identify different T-lymphocyte populations and macrophages...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/29243498/-cart-intensification-by-the-hiv-1-tat-b-clade-vaccine-progress-to-phase-iii-efficacy-studies
#6
Aurelio Cafaro, Cecilia Sgadari, Orietta Picconi, Antonella Tripiciano, Sonia Moretti, Vittorio Francavilla, Maria Rosaria Pavone Cossut, Stefano Buttò, Giovanni Cozzone, Fabrizio Ensoli, Paolo Monini, Barbara Ensoli
In spite of its success at suppressing HIV replication, combination antiretroviral therapy (cART) only partially reduces immune dysregulation and loss of immune functions. These cART-unmet needs appear to be due to persistent virus replication and cell-to-cell transmission in reservoirs, and are causes of increased patients' morbidity and mortality. Up to now, therapeutic interventions aimed at cART-intensification by attacking the virus reservoir have failed. Areas covered: We briefly review the rationale and clinical development of Tat therapeutic vaccine in cART-treated subjects in Italy and South Africa (SA)...
December 15, 2017: Expert Review of Vaccines
https://www.readbyqxmd.com/read/29243267/naegleria-fowleri-immunization-modifies-lymphocytes-and-apc-of-nasal-mucosa
#7
M M Carrasco-Yepez, R Campos-Rodríguez, A A Reséndiz-Albor, C Peña-Juárez, A Contis-Montes de Oca, I M Arciniega-Martínez, P Bonilla-Lemus, S Rojas-Hernandez
We investigated if intranasal immunization with amoebic lysates plus cholera toxin modified the populations of T and B lymphocytes, macrophages and dendritic cells by flow cytometry from nose-associated lymphoid tissue (NALT), cervical lymph nodes (CN), nasal passages (NP) and spleen (SP). In all immunized groups, the percentage of CD4 was higher than CD8 cells. CD45 was increased in B cells from mice immunized. We observed IgA-antibody forming cell (IgA-AFC) response, mainly in NALT and NP. Macrophages from NP and CN expressed the highest levels of CD80 and CD86 either in N...
December 15, 2017: Parasite Immunology
https://www.readbyqxmd.com/read/29243219/pd-1-blockade-enhances-the-anti-tumor-efficacy-of-gm-csf-surface-modified-bladder-cancer-stem-cells-vaccine
#8
Xiaojun Shi, Xinji Zhang, Jinlong Li, Lijun Mo, Hongfan Zhao, Yongtong Zhu, Zhiming Hu, Jimin Gao, Wanlong Tan
Eliminating cancer stem cells (CSCs) is a key issue in eradicating tumor. The streptavidin-granulocyte -macrophage colony stimulating factor (SA-GM-CSF) surface-modified bladder cancer stem cells vaccine previously developed using our protein-anchor technology could effectively induce specific immune response for eliminating CSCs. However, program death receptor-1 (PD-1)/program death ligand 1 (PD-L1) signaling in tumor microenvironment results in tumor adaptive immune resistance. Although the CSCs vaccine could increase the number of CD8+ T-cells, a part of these CD8+ T-cells expressed PD-1...
December 15, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29242513/scarf-1-promotes-adhesion-of-cd4-t-cells-to-human-hepatic-sinusoidal-endothelium-under-conditions-of-shear-stress
#9
Daniel A Patten, Sivesh K Kamarajah, Joanne M Rose, Joseph Tickle, Emma L Shepherd, David H Adams, Chris J Weston, Shishir Shetty
Liver-resident cells are constantly exposed to gut-derived antigens via portal blood and, as a consequence, they express a unique repertoire of scavenger receptors. Whilst there is increasing evidence that the gut contributes to chronic inflammatory liver disease, the role of scavenger receptors in regulating liver inflammation remains limited. Here, we describe for the first time the expression of scavenger receptor class F, member 1 (SCARF-1) on hepatic sinusoidal endothelial cells (HSEC). We report that SCARF-1 shows a highly localised expression pattern and co-localised with endothelial markers on sinusoidal endothelium...
December 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29241813/prenatal-stress-challenge-impairs-fetal-lung-development-and-asthma-severity-sex-specifically-in-mice
#10
Dimitra E Zazara, Clara V Perani, María E Solano, Petra C Arck
Allergic asthma is an increasing health problem worldwide. Interestingly, prenatal challenges such as stress have been associated with an increased risk for asthma during childhood. The underlying pathogenesis of how prenatal stress increases the risk for asthma still remains unclear. Potential targets could be that the fetal immune ontogeny or fetal lung development are compromised by prenatal challenges. Here, we aimed to identify whether prenatal stress challenge affects fetal lung development in mice. C57BL/6 pregnant mice were challenged with sound stress and fetal lung development was assessed histologically...
July 19, 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/29241019/quantitative-analysis-of-a-multiplexed-immunofluorescence-panel-in-t-cell-lymphoma
#11
Siok-Bian Ng, Shuangyi Fan, Shoa-Nian Choo, Michal Hoppe, Hoang Mai Phuong, Sanjay De Mel, Anand D Jeyasekharan
Immunohistochemistry (IHC) provides clinically useful information on protein expression in cancer cells. However, quantification of colocalizing signals using conventional IHC and visual scores is challenging. Here we describe the application of quantitative immunofluorescence in angioimmunoblastic T-cell lymphoma (AITL), a peripheral T-cell lymphoma characterized by cellular heterogeneity that impedes IHC interpretation and quantification. A multiplexed immunofluorescence (IF) panel comprising T- and B-lymphocyte markers along with T-follicular helper (TFH) markers was validated for appropriate cellular localization in sections of benign tonsillar tissue and tested in two samples of AITL, using a Vectra microscope for spectral imaging and InForm software for analysis...
December 1, 2017: SLAS Technology
https://www.readbyqxmd.com/read/29239901/prevention-of-hiv-1-transmission-through-breastfeeding-efficacy-and-safety-of-maternal-antiretroviral-therapy-versus-infant-nevirapine-prophylaxis-for-duration-of-breastfeeding-in-hiv-1-infected-women-with-high-cd4-cell-count-impaact-promise-a-randomized-open
#12
Patricia M Flynn, Taha E Taha, Mae Cababasay, Mary Glenn Fowler, Lynne M Mofenson, Maxensia Owor, Susan Fiscus, Lynda Stranix-Chibanda, Anna Coutsoudis, Devasena Gnanashanmugam, Nahida Chakhtoura, Katie McCarthy, Cornelius Mukuzunga, Bonus Makanani, Dhayendre Moodley, Teacler Nematadzira, Bangini Kusakara, Sandesh Patil, Tichaona Vhembo, Raziya Bobat, Blandina T Mmbaga, Maysseb Masenya, Mandisa Nyati, Gerhard Theron, Helen Mulenga, Kevin Butler, David E Shapiro
BACKGROUND: No randomized trial has directly compared the efficacy of prolonged infant antiretroviral prophylaxis versus maternal antiretroviral therapy (mART) for prevention of mother-to-child transmission throughout the breastfeeding period. SETTING: Fourteen sites in sub-Saharan Africa and India. METHODS: A randomized, open label strategy trial was conducted in HIV-1-infected women with CD4 counts >350 cells/mm (or >country-specific ART threshold if higher) and their breastfeeding HIV-1-uninfected newborns...
December 11, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/29239725/t-cell-calcium-dynamics-visualized-in-a-ratiometric-tdtomato-gcamp6f-transgenic-reporter-mouse
#13
Tobias X Dong, Shivashankar Othy, Amit Jairaman, Jonathan Skupsky, Angel Zavala, Ian Parker, Joseph L Dynes, Michael D Cahalan
Calcium is an essential cellular messenger that regulates numerous functions in living organisms. Here we describe development and characterization of 'Salsa6f', a fusion of GCaMP6f and tdTomato optimized for cell tracking while monitoring cytosolic Ca2+, and a transgenic Ca2+ reporter mouse with Salsa6f targeted to the Rosa26 locus for Cre-dependent expression in specific cell types. The development and function of T cells was unaffected in Cd4-Salsa6f mice. We describe Ca2+ signals reported by Salsa6f during T cell receptor activation in naïve T cells, helper Th17 T cells and regulatory T cells, and Ca2+ signals mediated in T cells by an activator of mechanosensitive Piezo1channels...
December 14, 2017: ELife
https://www.readbyqxmd.com/read/29239722/calcium-mediated-shaping-of-naive-cd4-t-cell-phenotype-and-function
#14
Vincent Guichard, Nelly Bonilla, Aurélie Durand, Alexandra Audemard-Verger, Thomas Guilbert, Bruno Martin, Bruno Lucas, Cédric Auffray
Continuous contact with self-major histocompatibility complex ligands is essential for the survival of naive CD4 T cells. We have previously shown that the resulting tonic TCR signaling also influences their fate upon activation by increasing their ability to differentiate into induced/peripheral regulatory T cells. To decipher the molecular mechanisms governing this process, we here focus on the TCR signaling cascade and demonstrate that a rise in intracellular calcium levels is sufficient to modulate the phenotype of mouse naive CD4 T cells and to increase their sensitivity to regulatory T-cell polarization signals, both processes relying on Calcineurin activation...
December 14, 2017: ELife
https://www.readbyqxmd.com/read/29239481/the-self-curing-phenomenon-of-schistosome-infection-in-rhesus-macaques-insight-from-in-vitro-studies
#15
Workineh Torben, Adebayo J Molehin, Robert V Blair, Carys Kenway, Faith Shiro, Davis Roslyn, Bayissa Chala, Dereje Gutu, Michael A Kebede, Gul Ahmad, Weidong Zhang, Pyone Aye, Mahesh Mohan, Andrew Lackner, Afzal A Siddiqui
A reduction in the burden of schistosomiasis is potentially achievable by integrating a schistosomiasis vaccine with current control measures. Here, we determine parasite-specific in vitro responses of B, T, and NK cells from naive uninfected rhesus macaques to Schistosoma mansoni (Sm) egg (SmEA) and worm antigen (SmWA) preparations isolated from infected baboons. Pronounced B cell responses to SmEA and NK cell responses to both SmEA and SmWA were observed. High levels of IL-2 and IL-21 responses against Sm antigens were observed in T and non-T cells of lymph nodes (LNs) and gut lamina propria-derived lymphocytes (LPLs)...
November 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/29239062/gvhd-amelioration-by-human-bone-marrow-mesenchymal-stromal-stem-cell-derived-extracellular-vesicles-is-associated-with-peripheral-preservation-of-naive-t-cell-populations
#16
Sumie Fujii, Yasuo Miura, Aya Fujishiro, Takero Shindo, Yutaka Shimazu, Hideyo Hirai, Hidetoshi Tahara, Akifumi Takaori-Kondo, Tatsuo Ichinohe, Taira Maekawa
A substantial proportion of patients with acute graft-versus-host disease (aGVHD) respond to cell therapy with culture-expanded human bone marrow mesenchymal stromal/stem cells (BM-MSCs). However, the mechanisms by which these cells can ameliorate aGVHD-associated complications remain to be clarified. We show here that BM-MSC-derived extracellular vesicles (EVs) recapitulated the therapeutic effects of BM-MSCs against aGVHD. Systemic infusion of human BM-MSC-derived EVs prolonged the survival of mice with aGVHD and reduced the pathologic damage in multiple GVHD-targeted organs...
December 14, 2017: Stem Cells
https://www.readbyqxmd.com/read/29238703/characterization-of-alpha-fetoprotein-effects-on-dendritic-cell-and-its-function-as-effector-immune-response-activator
#17
Jeremiah Suryatenggara, Heri Wibowo, Wahyuni Lukita Atmodjo, George Mathew
Tumor antigen alpha-fetoprotein (AFP) can promote immune tolerance toward tumor cells by inducing regulatory functions of the immune system. The purpose of this study was to characterize the effects of AFP on dendritic cells (DC) in their antitumor immune response stimulation and subsequent immune tolerance toward tumor cells. Monocytes were cultured in medium with GM-CSF and IL-4 and incubated for 6 days to generate immature DC (imDC). AFP was added into the treatment group at the beginning of the monocyte-derived DC culture...
2017: Journal of Hepatocellular Carcinoma
https://www.readbyqxmd.com/read/29238350/differentiation-and-transmigration-of-cd4-t-cells-in-neuroinflammation-and-autoimmunity
#18
REVIEW
Sandip Ashok Sonar, Girdhari Lal
CD4+ T cells play a central role in orchestrating protective immunity and autoimmunity. The activation and differentiation of myelin-reactive CD4+ T cells into effector (Th1 and Th17) and regulatory (Tregs) subsets at the peripheral tissues, and their subsequent transmigration across the blood-brain barrier (BBB) into the central nervous system (CNS) parenchyma are decisive events in the pathogenesis of multiple sclerosis and experimental autoimmune encephalomyelitis. How the Th1, Th17, and regulatory Tregs transmigrate across the BBB into the CNS and cause CNS inflammation is not clearly understood...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29238241/predictors-of-mortality-within-prison-and-after-release-among-persons-living-with-hiv-in-indonesia
#19
Gabriel J Culbert, Forrest W Crawford, Astia Murni, Agung Waluyo, Alexander R Bazazi, Junaiti Sahar, Frederick L Altice
Objectives: HIV-related mortality is increasing in Indonesia, where prisons house many people living with HIV and addiction. We examined all-cause mortality in HIV-infected Indonesian prisoners within prison and up to 24 months post-release. Materials and Methods: Randomly selected HIV-infected male prisoners (n=102) from two prisons in Jakarta, Indonesia completed surveys in prison and were followed up for 2 years (until study completion) or until they died or were lost to follow-up...
2017: Research and Reports in Tropical Medicine
https://www.readbyqxmd.com/read/29238229/coinfections-with-hepatitis-b-and-c-virus-and-syphilis-among-hiv-infected-clients-in-southern-ethiopia-a-cross-sectional-study
#20
Techalew Shimelis, Yayheyirad Tassachew, Agete Tadewos, Mesfin Worku Hordofa, Anteneh Amsalu, Birkneh Tilahun Tadesse, Endale Tadesse
Introduction: Hepatitis B virus (HBV) and hepatitis C virus (HCV) are hepatotropic viruses of public health significance worldwide. Despite their severe clinical impact in HIV-infected patients, there is inadequate information regarding the epidemiology of hepatitis/HIV coinfections in Ethiopia. Thus, this study aimed to determine the prevalence of HBV and HCV infections among HIV-infected patients at a tertiary hospital in Southern Ethiopia. Methods: Stored sera, which were originally collected for the investigation of syphilis among HIV-infected clients, were analyzed in this study...
2017: HIV/AIDS: Research and Palliative Care
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