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https://www.readbyqxmd.com/read/29691600/a-proinflammatory-cd4-t-cell-phenotype-in-gestational-diabetes-mellitus
#1
Angela Sheu, Yixian Chan, Angela Ferguson, Mohammad B Bakhtyari, Wendy Hawke, Chris White, Yuk Fun Chan, Patrick J Bertolino, Heng G Woon, Umaimainthan Palendira, Frederic Sierro, Sue Mei Lau
AIMS/HYPOTHESIS: Numerous adaptations of the maternal immune system are necessary during pregnancy to maintain immunological tolerance to the semi-allogeneic fetus. Several complications of pregnancy have been associated with dysregulation of these adaptive mechanisms. While gestational diabetes mellitus (GDM) has been associated with upregulation of circulating inflammatory factors linked to innate immunity, polarisation of the adaptive immune system has not been extensively characterised in this condition...
April 24, 2018: Diabetologia
https://www.readbyqxmd.com/read/29691471/baricitinib-induced-blockade-of-interferon-gamma-receptor-and-interleukin-6-receptor-for-the-prevention-and-treatment-of-graft-versus-host-disease
#2
Jaebok Choi, Matthew L Cooper, Karl Staser, Kidist Ashami, Kiran R Vij, Bing Wang, Lynne Marsala, Jessica Niswonger, Julie Ritchey, Bader Alahmari, Samuel Achilefu, Ikuo Tsunoda, Mark A Schroeder, John F DiPersio
The therapeutic benefits of allogeneic hematopoietic stem cell transplantation (allo-HSCT) are derived from the graft-versus-leukemia (GvL) effects of the procedure. There is a strong association between the GvL effects and graft-versus-host disease (GvHD), a major life-threatening complication of allo-HSCT. The limiting of GvHD while maintaining the GvL effect remains the goal of allo-HSCT. Therefore, identifying optimal therapeutic targets to selectively suppress GvHD while maintaining the GvL effects represents a significant unmet medical need...
April 2, 2018: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/29690905/resolution-of-bleomycin-induced-murine-pulmonary-fibrosis-via-a-splenic-lymphocyte-subpopulation
#3
Koichiro Kamio, Arata Azuma, Kuniko Matsuda, Jiro Usuki, Minoru Inomata, Akemi Morinaga, Takeru Kashiwada, Nobuhiko Nishijima, Shioto Itakura, Nariaki Kokuho, Kenichiro Atsumi, Hiroki Hayashi, Tomoyoshi Yamaguchi, Kazue Fujita, Yoshinobu Saito, Shinji Abe, Kaoru Kubota, Akihiko Gemma
BACKGROUND: Idiopathic pulmonary fibrosis (IPF) is a progressive disease with high mortality, and the pathogenesis of the disease is still incompletely understood. Although lymphocytes, especially CD4+ CD25+ FoxP3+ regulatory T cells (Tregs), have been implicated in the development of IPF, contradictory results have been reported regarding the contribution of Tregs to fibrosis both in animals and humans. The aim of this study was to investigate whether a specific T cell subset has therapeutic potential in inhibiting bleomycin (BLM)-induced murine pulmonary fibrosis...
April 24, 2018: Respiratory Research
https://www.readbyqxmd.com/read/29690575/natural-immunity-to-hiv-a-template-for-vaccine-strategies
#4
REVIEW
Lyvia Fourcade, Johanne Poudrier, Michel Roger
Africa accounts for the majority of global human immunodeficiency virus (HIV) infections, most of which affect women through heterosexual intercourse. Currently, there is no cure for HIV and the development of vaccines and microbicides remains the best solution to eradicate the pandemic. We and others have identified HIV highly-exposed seronegative (HESN) individuals among African female commercial sex workers (CSWs). Analyses of genital samples from HESNs have demonstrated potent innate and anti-inflammatory conditions, HIV-specific CD4⁺ and CD8⁺ T-cells as well as immunoglobulins (Igs), and increased regulatory cell populations, all of which support a delicate balance between strength and control against HIV intrusion...
April 23, 2018: Viruses
https://www.readbyqxmd.com/read/29689251/deregulated-psgl-1-expression-in-b-cells-and-dendritic-cells-may-be-implicated-in-human-systemic-sclerosis-development
#5
Javier Silván, Rafael González-Tajuelo, Esther Vicente-Rabaneda, Alicia Pérez-Frías, Marina Espartero-Santos, Antonio Muñoz-Cañejas, Elena García-Lorenzo, Carlos Gamallo, Santos Castañeda, Ana Urzainqui
Systemic sclerosis (SSc) is an autoimmune disorder with high morbidity and mortality, difficult early diagnosis and without curative treatment. PSGL-1 is a leukocyte receptor whose deficiency in mice promotes an SSc-like disease. ADAM8, a metalloprotease that cleaves PSGL-1, is implicated in inflammatory processes. Our goal was to evaluate whether PSGL-1 and ADAM8 contribute to the pathogenesis of human SSc. We found that patients with SSc presented increased PSGL-1 expression on monocytes, dendritic cells (DCs) and T cells, and decreased expression of PSGL-1 on B cells...
April 21, 2018: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/29688896/nox2-in-regulatory-t-cells-promotes-angiotensin-ii-induced-cardiovascular-remodeling
#6
Amber Emmerson, Silvia Cellone Trevelin, Heloise Mongue-Din, Pablo D Becker, Carla Ortiz, Lesley A Smyth, Qi Peng, Raul Elgueta, Greta Sawyer, Aleksandar Ivetic, Robert I Lechler, Giovanna Lombardi, Ajay M Shah
The superoxide-generating enzyme Nox2 contributes to hypertension and cardiovascular remodeling triggered by activation of the renin-angiotensin system. Multiple Nox2-expressing cells are implicated in angiotensin II (AngII)-induced pathophysiology, but the importance of Nox2 in leukocyte subsets is poorly understood. Here, we investigated the role of Nox2 in T cells, particularly Tregs. Mice globally deficient in Nox2 displayed increased numbers of Tregs in the heart at baseline whereas AngII-induced T-effector cell (Teffs) infiltration was inhibited...
April 24, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29687851/mir-132-weakens-proliferation-and-invasion-of-glioma-cells-via-the-inhibition-of-gli1
#7
Y-Z Wang, J-J Han, S-Q Fan, W Yang, Y-B Zhang, T-J Xu, G-M Xu
OBJECTIVE: Transcriptional factor Gli1 in Hedgehog signal pathway facilitates epithelial mesenchymal transition (EMT) and is associated with invasion or proliferation of multiple tumor cells. The previous study showed the correlation between miR-132 down-regulation and glioma pathogenesis. We investigated the role of miR-132 in mediating Gli1 expression and in affecting proliferation or invasion of glioma cells. PATIENTS AND METHODS: Dual luciferase reporter gene assay was used to confirm the targeted regulation between miR-132 and Gli1...
April 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29686686/autoimmune-lymphoproliferative-syndrome-fas-patients-have-an-abnormal-regulatory-t-cell-treg-phenotype-but-display-normal-natural-treg-suppressive-function-on-t-cell-proliferation
#8
Fabienne Mazerolles, Marie-Claude Stolzenberg, Olivier Pelle, Capucine Picard, Benedicte Neven, Alain Fischer, Aude Magerus-Chatinet, Frederic Rieux-Laucat
Objective: Autoimmune lymphoproliferative syndrome (ALPS) with FAS mutation (ALPS-FAS) is a nonmalignant, noninfectious, lymphoproliferative disease with autoimmunity. Given the central role of natural regulatory T cells (nTregs) in the control of lymphoproliferation and autoimmunity, we assessed nTreg-suppressive function in 16 patients with ALPS-FAS. Results: The proportion of CD25high CD127low Tregs was lower in ALPS-FAS patients than in healthy controls. This subset was correlated with a reduced CD25 expression in CD3+ CD4+ T cells from ALPS patients and thus an abnormally low proportion of CD25high FOXP3+ Helios+ T cells...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29686684/shared-and-unique-features-distinguishing-follicular-t-helper-and-regulatory-cells-of-peripheral-lymph-node-and-peyer-s-patches
#9
Hristo Georgiev, Inga Ravens, Georgia Papadogianni, Stephan Halle, Bernard Malissen, Gabriela G Loots, Reinhold Förster, Günter Bernhardt
Follicular helper (TFH) and regulatory (TFR) cells are critical players in managing germinal center (GC) reactions that accomplish effective humoral immune responses. Transcriptome analyses were done comparing gene regulation of TFH and TFR cells isolated from Peyer's Patches (PP) and immunized peripheral lymph nodes (pLNs) revealing many regulatory patterns common to all follicular cells. However, in contrast to TFH cells, the upregulation or downregulation of many genes was attenuated substantially in pLN TFR cells when compared to those of PP...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29686677/mir-466a-targeting-of-tgf-%C3%AE-2-contributes-to-foxp3-regulatory-t-cell-differentiation-in-a-murine-model-of-allogeneic-transplantation
#10
William Becker, Mitzi Nagarkatti, Prakash S Nagarkatti
The promise of inducing immunological tolerance through regulatory T cell (Treg) control of effector T cell function is crucial for developing future therapeutic strategies to treat allograft rejection as well as inflammatory autoimmune diseases. In the current study, we used murine allograft rejection as a model to identify microRNA (miRNA) regulation of Treg differentiation from naïve CD4 cells. We performed miRNA expression array in CD4+ T cells in the draining lymph node (dLN) of mice which received syngeneic or allogeneic grafts to determine the molecular mechanisms that hinder the expansion of Tregs...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29686676/interleukin-10-producing-dc-10-is-a-unique-tool-to-promote-tolerance-via-antigen-specific-t-regulatory-type-1-cells
#11
REVIEW
Michela Comi, Giada Amodio, Silvia Gregori
The prominent role of tolerogenic dendritic cells (tolDCs) in promoting immune tolerance and the development of efficient methods to generate clinical grade products allow the application of tolDCs as cell-based approach to dampen antigen (Ag)-specific T cell responses in autoimmunity and transplantation. Interleukin (IL)-10 potently modulates the differentiation and functions of myeloid cells. Our group contributed to the identification of IL-10 as key factor in inducing a subset of human tolDCs, named dendritic cell (DC)-10, endowed with the ability to spontaneously release IL-10 and induce Ag-specific T regulatory type 1 (Tr1) cells...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29686668/emerging-concepts-of-adaptive-immunity-in-leprosy
#12
REVIEW
Soumi Sadhu, Dipendra Kumar Mitra
Leprosy is a chronic intracellular infection caused by the acid-fast bacillus, Mycobacterium leprae . The disease chiefly affects the skin, peripheral nerves, mucosa of the upper respiratory tract, and the eyes. The damage to peripheral nerves results in sensory and motor impairment with characteristic deformities and disability. Presently, the disease remains concentrated in resource-poor countries in tropical and warm temperate regions with the largest number of cases reported from India. Even though innate immunity influences the clinical manifestation of the disease, it is the components of adaptive immune system which seem to tightly correlate with the characteristic spectrum of leprosy...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29686426/transcript-indexed-atac-seq-for-precision-immune-profiling
#13
Ansuman T Satpathy, Naresha Saligrama, Jason D Buenrostro, Yuning Wei, Beijing Wu, Adam J Rubin, Jeffrey M Granja, Caleb A Lareau, Rui Li, Yanyan Qi, Kevin R Parker, Maxwell R Mumbach, William S Serratelli, David G Gennert, Alicia N Schep, M Ryan Corces, Michael S Khodadoust, Youn H Kim, Paul A Khavari, William J Greenleaf, Mark M Davis, Howard Y Chang
T cells create vast amounts of diversity in the genes that encode their T cell receptors (TCRs), which enables individual clones to recognize specific peptide-major histocompatibility complex (MHC) ligands. Here we combined sequencing of the TCR-encoding genes with assay for transposase-accessible chromatin with sequencing (ATAC-seq) analysis at the single-cell level to provide information on the TCR specificity and epigenomic state of individual T cells. By using this approach, termed transcript-indexed ATAC-seq (T-ATAC-seq), we identified epigenomic signatures in immortalized leukemic T cells, primary human T cells from healthy volunteers and primary leukemic T cells from patient samples...
April 23, 2018: Nature Medicine
https://www.readbyqxmd.com/read/29686284/multi-faceted-immunomodulatory-and-tissue-tropic-clinical-bacterial-isolate-potentiates-prostate-cancer-immunotherapy
#14
Jonathan F Anker, Anum F Naseem, Hanlin Mok, Anthony J Schaeffer, Sarki A Abdulkadir, Praveen Thumbikat
Immune checkpoint inhibitors have not been effective for immunologically "cold" tumors, such as prostate cancer, which contain scarce tumor infiltrating lymphocytes. We hypothesized that select tissue-specific and immunostimulatory bacteria can potentiate these immunotherapies. Here we show that a patient-derived prostate-specific microbe, CP1, in combination with anti-PD-1 immunotherapy, increases survival and decreases tumor burden in orthotopic MYC- and PTEN-mutant prostate cancer models. CP1 administered intra-urethrally specifically homes to and colonizes tumors without causing any systemic toxicities...
April 23, 2018: Nature Communications
https://www.readbyqxmd.com/read/29685903/posttranscriptional-regulation-of-t-helper-cell-fate-decisions
#15
REVIEW
Kai P Hoefig, Vigo Heissmeyer
T helper cell subsets orchestrate context- and pathogen-specific responses of the immune system. They mostly do so by secreting specific cytokines that attract or induce activation and differentiation of other immune or nonimmune cells. The differentiation of T helper 1 (Th1), Th2, T follicular helper, Th17, and induced regulatory T cell subsets from naive T cells depends on the activation of intracellular signal transduction cascades. These cascades originate from T cell receptor and costimulatory receptor engagement and also receive critical input from cytokine receptors that sample the cytokine milieu within secondary lymphoid organs...
April 23, 2018: Journal of Cell Biology
https://www.readbyqxmd.com/read/29685287/the-circulating-levels-of-cd4-t-helper-cells-are-higher-in-bipolar-disorder-as-compared-to-major-depressive-disorder
#16
Karlijn Becking, Bartholomeus C M Haarman, Laura Grosse, Willem A Nolen, Stephan Claes, Volker Arolt, Robert A Schoevers, Hemmo A Drexhage
INTRODUCTION: Clinical differentiation between bipolar disorder (BD) and major depressive disorder (MDD) is difficult. Research has therefore focused on discriminatory biological markers. Previous studies in MDD reported T cell deficits, while the limited studies in BD reported T cell activation. Studies directly comparing circulating numbers of T cells and T cell subsets between BD and MDD are lacking. The studies in the MOODINFLAME consortium make such a comparison possible. METHODS: The number of circulating leukocyte populations (lymphocytes, monocytes, NK cells, B cells, T cells, CD3+CD8+ T cytotoxic cells, CD3+CD4+ T helper cells, Th1, Th2, Th17 and T regulatory cells) was determined using FACS technology in a cohort of 83 euthymic BD patients, 8 BD patients with a current mood episode and 165 healthy controls (HC)...
June 15, 2018: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/29685186/ratio-of-cd147-high-cd147-low-in-cd4-cd25-t-cells-a-potential-biomarker-for-early-diagnosis-and-prediction-of-response-to-therapy-for-autoimmune-diseases
#17
Huifang Guo, Liru Xun, Ruisan Zhang, Xingchun Gou
Regulatory T cell (Treg cell) is an important immunosuppressive T cell subset and plays a dominant role in maintaining the immune balance in vivo. The function defects in Treg cells have been involved in the pathogenesis of many autoimmune diseases. The detection of Treg cell suppressive function is important for early diagnosis and prediction of response to treatment for autoimmune diseases. The traditional detection of Treg cell suppressive function needs at least 20 mL peripheral blood sample of patients and the results would be got in sixth day, therefore, it could not be widely applied in clinical...
June 2018: Medical Hypotheses
https://www.readbyqxmd.com/read/29684712/high-salt-intake-enhances-swim-stress-induced-pvn-vasopressin-cell-activation-and-active-stress-coping
#18
N C Mitchell, T L Gilman, L C Daws, G M Toney
PURPOSE: Stress contributes to many psychiatric disorders; however, responsivity to stressors can vary depending on previous or current stress exposure. Relatively innocuous heterotypic (differing in type) stressors can summate to result in exaggerated neuronal and behavioral responses. Here we investigated the ability of prior high dietary sodium chloride (salt) intake, a dehydrating osmotic stressor, to enhance neuronal and behavioral responses of mice to an acute psychogenic swim stress (SS)...
April 6, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29684502/vascular-smooth-muscle-cell-proliferation-as-a-therapeutic-target-part-1-molecular-targets-and-pathways
#19
REVIEW
Dongdong Wang, Pavel Uhrin, Andrei Mocan, Birgit Waltenberger, Johannes M Breuss, Devesh Tewari, Judit Mihaly-Bison, Łukasz Huminiecki, Rafał R Starzyński, Nikolay T Tzvetkov, Jarosław Horbańczuk, Atanas G Atanasov
Cardiovascular diseases are a major cause of human death worldwide. Excessive proliferation of vascular smooth muscle cells contributes to the etiology of such diseases, including atherosclerosis, restenosis, and pulmonary hypertension. The control of vascular cell proliferation is complex and encompasses interactions of many regulatory molecules and signaling pathways. Herein, we recapitulated the importance of signaling cascades relevant for the regulation of vascular cell proliferation. Detailed understanding of the process underlying this process is essential for the identification of new lead compounds (e...
April 20, 2018: Biotechnology Advances
https://www.readbyqxmd.com/read/29684436/foxo-transcription-factors-in-t-cell-biology-and-tumor-immunity
#20
REVIEW
Chong T Luo, Ming O Li
The evolutionally conserved forkhead box O (Foxo) family of transcription factors is pivotal in the control of nutrient sensing and stress responses. Recent studies have revealed that the Foxo proteins have been rewired to regulate highly specialized T cell activities. Here, we review the latest advances in the understanding of how Foxo transcription factors control T cell biology, including T cell trafficking, naive T cell homeostasis, effector and memory responses, as well as the differentiation and function of regulatory T cells...
April 20, 2018: Seminars in Cancer Biology
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