keyword
MENU ▼
Read by QxMD icon Read
search

t cell anergy

keyword
https://www.readbyqxmd.com/read/29754432/bim-determines-the-number-of-merocytic-dendritic-cells-a-cell-type-that-breaks-immune-tolerance
#1
Cindy Audiger, Sylvie Lesage
In contrast to conventional dendritic cells (cDC), when merocytic dendritic cells (mcDC) present antigens derived from apoptotic bodies, T cell anergy is reversed rather than induced, a process that promotes autoimmunity. Interestingly, mcDC are present in higher proportion in type 1 diabetes-prone NOD mice than in autoimmune-resistant B6 and BALB/c mice, and the Insulin-dependent diabetes 13 locus is linked to mcDC proportion. Therefore, mcDC are notably associated with susceptibility to autoimmune diabetes...
May 13, 2018: Immunology and Cell Biology
https://www.readbyqxmd.com/read/29748898/cystatin-f-as-a-regulator-of-immune-cell-cytotoxicity
#2
REVIEW
Janko Kos, Milica Perišić Nanut, Mateja Prunk, Jerica Sabotič, Esmeralda Dautović, Anahid Jewett
Cysteine cathepsins are lysosomal peptidases involved in the regulation of innate and adaptive immune responses. Among the diverse processes, regulation of granule-dependent cytotoxicity of cytotoxic T-lymphocytes (CTLs) and natural killer (NK) cells during cancer progression has recently gained significant attention. The function of cysteine cathepsins is regulated by endogenous cysteine protease inhibitors-cystatins. Whereas other cystatins are generally cytosolic or extracellular proteins, cystatin F is present in endosomes and lysosomes and is thus able to regulate the activity of its target directly...
May 10, 2018: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/29743578/grail-is-involved-in-adipocyte-differentiation-and-diet-induced-obesity
#3
Peiyao Liu, Poshiuan Hsieh, Huitsu Lin, Tejung Liu, Hsuehling Wu, Chengcheung Chen, Yingchuan Chen
Grail is a crucial regulator of various biological processes, including the development of T-cell anergy, antiviral innate immune response, and cancer. However, the role of Grail in adipogenesis and obesity remains unclear. Here, we demonstrated that Grail knockdown in vitro leads to a decrease in PPARγ expression, resulting in adipogenesis inhibition. However, Grail overexpression induced the same effects. Grail was shown to interact with PPARγ, targeting it for degradation and modulating its adipogenic activity...
May 9, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29719195/sarcoidosis-a-state-of-the-art-review-from-the-thoracic-society-of-australia-and-new-zealand
#4
Hasib Ahmadzai, Shuying Huang, Chris Steinfort, James Markos, Roger Ka Allen, Denis Wakefield, Margaret Wilsher, Paul S Thomas
Sarcoidosis is a systemic disease of unknown aetiology, characterised by non-caseating granulomatous inflammation. It most commonly manifests in the lungs and intrathoracic lymph nodes but can affect any organ. This summary of an educational resource provided by the Thoracic Society of Australia and New Zealand outlines the current understanding of sarcoidosis and highlights the need for further research. Our knowledge of the aetiology and immunopathogenesis of sarcoidosis remains incomplete. The enigma of sarcoidosis lies in its immunological paradox of type 1 T helper cell-dominated local inflammation co-existing with T regulatory-induced peripheral anergy...
May 7, 2018: Medical Journal of Australia
https://www.readbyqxmd.com/read/29686668/emerging-concepts-of-adaptive-immunity-in-leprosy
#5
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/29650674/germinal-center-antibody-mutation-trajectories-are-determined-by-rapid-self-foreign-discrimination
#6
Deborah L Burnett, David B Langley, Peter Schofield, Jana R Hermes, Tyani D Chan, Jennifer Jackson, Katherine Bourne, Joanne H Reed, Kate Patterson, Benjamin T Porebski, Robert Brink, Daniel Christ, Christopher C Goodnow
Antibodies have the specificity to differentiate foreign antigens that mimic self antigens, but it remains unclear how such specificity is acquired. In a mouse model, we generated B cells displaying an antibody that cross-reacts with two related protein antigens expressed on self versus foreign cells. B cell anergy was imposed by self antigen but reversed upon challenge with high-density foreign antigen, leading to germinal center recruitment and antibody gene hypermutation. Single-cell analysis detected rapid selection for mutations that decrease self affinity and slower selection for epistatic mutations that specifically increase foreign affinity...
April 13, 2018: Science
https://www.readbyqxmd.com/read/29616018/induction-of-interleukin-10-producing-dendritic-cells-as-a-tool-to-suppress-allergen-specific-t-helper-2-responses
#7
REVIEW
Stefan Schülke
Dendritic cells (DCs) are gatekeepers of the immune system that control induction and polarization of primary, antigen-specific immune responses. Depending on their maturation/activation status, the molecules expressed on their surface, and the cytokines produced DCs have been shown to either elicit immune responses through activation of effector T cells or induce tolerance through induction of either T cell anergy, regulatory T cells, or production of regulatory cytokines. Among the cytokines produced by tolerogenic DCs, interleukin 10 (IL-10) is a key regulatory cytokine limiting und ultimately terminating excessive T-cell responses to microbial pathogens to prevent chronic inflammation and tissue damage...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29593027/t-cell-dysfunction-in-glioblastoma-applying-a-new-framework
#8
Karolina I Woroniecka, Kristen E Rhodin, Pakawat Chongsathidkiet, Kristin A Keith, Peter E Fecci
A functional, replete T cell repertoire is an integral component to adequate immune surveillance and to the initiation and maintenance of productive anti-tumor immune responses. Glioblastoma (GBM), however, is particularly adept at sabotaging anti-tumor immunity, eliciting severe T cell dysfunction that is both qualitative and quantitative. Understanding and countering such dysfunction are among the keys to harnessing the otherwise stark potential of anti-cancer immune-based therapies. While T cell dysfunction in GBM is long described, newer immunologic frameworks now exist for re-classifying T cell deficits in a manner that better permits their study and reversal...
March 28, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29581358/deregulated-mucosal-immune-surveillance-through-gut-associated-regulatory-t-cells-and-pd-1-t-cells-in-human-colorectal-cancer
#9
Hanae Fujimoto, Yoriko Saito, Kenoki Ohuchida, Eiryo Kawakami, Saera Fujiki, Takashi Watanabe, Rintaro Ono, Akiko Kaneko, Shinsuke Takagi, Yuho Najima, Atsushi Hijikata, Lin Cui, Takashi Ueki, Yoshinao Oda, Shohei Hori, Osamu Ohara, Masafumi Nakamura, Takashi Saito, Fumihiko Ishikawa
Disturbed balance between immune surveillance and tolerance may lead to poor clinical outcomes in some malignancies. In paired analyses of adenocarcinoma and normal mucosa from 142 patients, we found a significant increase of the CD4/CD8 ratio and accumulation of regulatory T cells (Tregs) within the adenocarcinoma. The increased frequency of Tregs correlated with the local infiltration and extension of the tumor. There was concurrent maturation arrest, upregulation of programmed death-1 expression, and functional impairment in CD8+ T cells (CTLs) isolated from the adenocarcinoma...
March 26, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29567829/the-pancreatic-cancer-microbiome-promotes-oncogenesis-by-induction-of-innate-and-adaptive-immune-suppression
#10
Smruti Pushalkar, Mautin Hundeyin, Donnele Daley, Constantinos P Zambirinis, Emma Kurz, Ankita Mishra, Navyatha Mohan, Berk Aykut, Mykhaylo Usyk, Luisana E Torres, Gregor Werba, Kevin Zhang, Yuqi Guo, Qianhao Li, Neha Akkad, Sarah Lall, Benjamin Wadowski, Johana Gutierrez, Juan Andres Kochen Rossi, Jeremy W Herzog, Brian Diskin, Alejandro Torres-Hernandez, Josh Leinwand, Wei Wang, Pardeep S Taunk, Shivraj Savadkar, Malvin Janal, Anjana Saxena, Xin Li, Deirdre Cohen, R Balfour Sartor, Deepak Saxena, George Miller
We found that the cancerous pancreas harbors a markedly more abundant microbiome compared with normal pancreas in both mice and humans, and select bacteria are differentially increased in the tumorous pancreas compared with gut. Ablation of the microbiome protects against preinvasive and invasive pancreatic ductal adenocarcinoma (PDA), whereas transfer of bacteria from PDA-bearing hosts, but not controls, reverses tumor protection. Bacterial ablation was associated with immunogenic reprogramming of the PDA tumor microenvironment, including a reduction in myeloid-derived suppressor cells and an increase in M1 macrophage differentiation, promoting TH1 differentiation of CD4+ T cells and CD8+ T-cell activation...
April 2018: Cancer Discovery
https://www.readbyqxmd.com/read/29541071/tolerogenic-transcriptional-signatures-of-steady-state-and-pathogen-induced-dendritic-cells
#11
REVIEW
Emilia Vendelova, Diyaaeldin Ashour, Patrick Blank, Florian Erhard, Antoine-Emmanuel Saliba, Ulrich Kalinke, Manfred B Lutz
Dendritic cells (DCs) are key directors of tolerogenic and immunogenic immune responses. During the steady state, DCs maintain T cell tolerance to self-antigens by multiple mechanisms including inducing anergy, deletion, and Treg activity. All of these mechanisms help to prevent autoimmune diseases or other hyperreactivities. Different DC subsets contribute to pathogen recognition by expression of different subsets of pattern recognition receptors, including Toll-like receptors or C-type lectins. In addition to the triggering of immune responses in infected hosts, most pathogens have evolved mechanisms for evasion of targeted responses...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29540672/immunosuppressive-effect-of-arsenic-trioxide-on-islet-xenotransplantation-prolongs-xenograft-survival-in-mice
#12
Bin Zhao, Jun-Jie Xia, Lu-Min Wang, Chang Gao, Jia-Li Li, Jia-Yin Liu, Qi-Jun Cheng, Chen Dai, Qi-Lin Ma, Zhong-Quan Qi, Ben-Hua Zhao
The role of arsenic trioxide (As2 O3 ) in inhibiting immune rejection and prolonging islet allograft survival has been identified in islet allotransplantation. This study aims to explore the role of As2 O3 in islet xenotransplantation and the action mechanism. The streptozotocin (STZ) was used in C57BL/6 mice to induce the type 1 diabetes mellitus (T1DM) for xenotransplantation models establishment. Donor islets were isolated by digesting. The flow cytometry (FCM) was used to analyze lymphocyte types. The blood sugar level was detected by using intraperitoneal glucose tolerance test (IPGTT)...
March 14, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29535734/the-role-of-natural-killer-t-cells-in-cancer-a-phenotypical-and-functional-approach
#13
REVIEW
Daniëlle Krijgsman, Marianne Hokland, Peter J K Kuppen
Natural killer T (NKT) cells are a subset of CD1d-restricted T cells at the interface between the innate and adaptive immune system. NKT cells can be subdivided into functional subsets that respond rapidly to a wide variety of glycolipids and stress-related proteins using T- or natural killer (NK) cell-like effector mechanisms. Because of their major modulating effects on immune responses via secretion of cytokines, NKT cells are also considered important players in tumor immunosurveillance. During early tumor development, T helper (TH )1-like NKT cell subsets have the potential to rapidly stimulate tumor-specific T cells and effector NK cells that can eliminate tumor cells...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29535721/early-growth-response-gene-2-expressing-cd4-lag3-regulatory-t-cells-the-therapeutic-potential-for-treating-autoimmune-diseases
#14
REVIEW
Tomohisa Okamura, Kazuhiko Yamamoto, Keishi Fujio
Regulatory T cells (Tregs) are necessary for the maintenance of immune tolerance. Tregs are divided into two major populations: one is thymus derived and the other develops in the periphery. Among these Tregs, CD4+ CD25+ Tregs, which mainly originate in the thymus, have been extensively studied. Transcription factor Foxp3 is well known as a master regulatory gene for the development and function of CD4+ CD25+ Tregs. On the other hand, peripheral Tregs consist of distinct cell subsets including Foxp3-dependent extrathymically developed Tregs and interleukin (IL)-10-producing type I regulatory T (Tr1) cells...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29534522/regulation-of-t-cell-signaling-by-post-translational-modifications-in-autoimmune-disease
#15
REVIEW
Taku Kuwabara, Yukihide Matsui, Fumio Ishikawa, Motonari Kondo
The adaptive immune system involves antigen-specific host defense mechanisms mediated by T and B cells. In particular, CD4⁺ T cells play a central role in the elimination of pathogens. Immunological tolerance in the thymus regulates T lymphocytes to avoid self-components, including induction of cell death in immature T cells expressing the self-reactive T-cell receptor repertoire. In the periphery, mature T cells are also regulated by tolerance, e.g., via induction of anergy or regulatory T cells. Thus, T cells strictly control intrinsic signal transduction to prevent excessive responses or self-reactions...
March 12, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29522194/neutralization-of-cd40-ligand-costimulation-promotes-bone-formation-and-accretion-of-vertebral-bone-mass-in-mice
#16
Susanne Roser-Page, Tatyana Vikulina, Kanglun Yu, Meghan E McGee-Lawrence, M Neale Weitzmann
Objective: Immunosuppressive biologics are used in the management of RA and additional immunomodulators are under investigation including modulators of the CD40/CD40 ligand (CD40L) costimulation pathway. Tampering with immune function can have unanticipated skeletal consequences due to disruption of the immuno-skeletal interface, a nexus of shared cells and cytokine effectors serving discrete functions in both immune and skeletal systems. In this study, we examined the effect of MR1, a CD40L neutralizing antibody, on physiological bone remodelling in healthy mice...
March 7, 2018: Rheumatology
https://www.readbyqxmd.com/read/29516402/role-of-human-leukocyte-antigens-hla-in-autoimmune-diseases
#17
REVIEW
Gergely Bodis, Victoria Toth, Andreas Schwarting
Since the discovery of HLA 60 years ago, it has contributed to the understanding of the immune system as well as of the pathogenesis of several diseases. Aside from its essential role in determining donor-recipient immune compatibility in organ transplantation, HLA genotyping is meanwhile performed routinely as part of the diagnostic work-up of certain autoimmune diseases. Considering the ability of HLA to influence thymic selection as well as peripheral anergy of T cells, its role in the pathogenesis of autoimmunity is understandable...
June 2018: Rheumatology and Therapy
https://www.readbyqxmd.com/read/29490991/targeting-tumor-vasculature-with-tnf-leads-effector-t-cells-to-the-tumor-and-enhances-therapeutic-efficacy-of-immune-checkpoint-blockers-in-combination-with-adoptive-cell-therapy
#18
Angela Rita Elia, Matteo Grioni, Veronica Basso, Flavio Curnis, Massimo Freschi, Angelo Corti, Anna Mondino, Matteo Bellone
Purpose: Irregular blood flow and endothelial cell anergy, which characterize many solid tumors, hinder tumor infiltration by cytotoxic T lymphocytes (CTL). This confers resistance to cancer immunotherapy with monoclonal antibodies directed against regulatory pathways in T lymphocytes (i.e., immune checkpoint blockade, ICB). We investigated whether NGR-TNF, a TNF derivative capable of targeting the tumor vasculature, and improving intratumor infiltration by activated CTLs, could sensitize tumors to ICB with antibodies specific for the PD-1 and CTLA-4 receptors...
May 1, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29490888/the-dark-side-of-tumor-associated-endothelial-cells
#19
REVIEW
Francesco De Sanctis, Stefano Ugel, John Facciponte, Andrea Facciabene
Angiogenesis is a hallmark of cancer and a requisite that tumors must achieve to fulfill their metabolic needs of nutrients and oxygen. As a critical step in cancer progression, the 'angiogenic switch' allows tumor cells to survive and grow, and provides them access to vasculature resulting in metastatic progression and dissemination. Tumor-dependent triggering of the angiogenic switch has critical consequences on tumor progression which extends from an increased nutrient supply and relies instead on the ability of the tumor to hijack the host immune response for the generation of a local immunoprivileged microenvironment...
February 2018: Seminars in Immunology
https://www.readbyqxmd.com/read/29488131/mechanisms-of-oral-tolerance
#20
REVIEW
Leticia Tordesillas, M Cecilia Berin
Oral tolerance is a state of systemic unresponsiveness that is the default response to food antigens in the gastrointestinal tract, although immune tolerance can also be induced by other routes, such as the skin or inhalation. Antigen can be acquired directly by intestinal phagocytes, or pass through enterocytes or goblet cell-associated passages prior to capture by dendritic cells (DCs) in the lamina propria. Mucin from goblet cells acts on DCs to render them more tolerogenic. A subset of regulatory DCs expressing CD103 is responsible for delivery of antigen to the draining lymph node and induction of Tregs...
February 27, 2018: Clinical Reviews in Allergy & Immunology
keyword
keyword
49760
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"