105,179 results match your criteria cd8+ central

The binding of LDN193189 to CD133 C-terminus suppresses the tumorigenesis and immune escape of liver tumor-initiating cells.

Cancer Lett 2021 May 10. Epub 2021 May 10.

NHC Key Laboratory of Glycoconjugates Research, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China. Electronic address:

The tumor-initiating cell (TIC) marker CD133 promotes TIC self-renewal and tumorigenesis through the tyrosine phosphorylation of its c-terminal domain. Therefore, finding compounds that target the phosphorylation of CD133 will provide an effective method for inhibiting TICs characteristics. Here, through small molecule microarray screening, compound LDN193189 was found to bind to the c-terminus of CD133 and influenced its tyrosine phosphorylation. Read More

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Compartmentalization of cerebrospinal fluid inflammation across the spectrum of untreated HIV-1 infection, central nervous system injury and viral suppression.

PLoS One 2021 13;16(5):e0250987. Epub 2021 May 13.

Department of Neurology, University of California San Francisco, San Francisco, CA, United States of America.

Objective: To characterize the evolution of central nervous system (CNS) inflammation in HIV-1 infection applying a panel of cerebrospinal fluid (CSF) inflammatory biomarkers to grouped subjects representing a broad spectrum of systemic HIV-1 immune suppression, CNS injury and viral control.

Methods: This is a cross-sectional analysis of archived CSF and blood samples, assessing concentrations of 10 functionally diverse soluble inflammatory biomarkers by immunoassays in 143 HIV-1-infected subjects divided into 8 groups: untreated primary HIV-1 infection (PHI); four untreated groups defined by their blood CD4+ T lymphocyte counts; untreated patients presenting with subacute HIV-associated dementia (HAD); antiretroviral-treated subjects with ≥1 years of plasma viral suppression; and untreated elite controllers. Twenty HIV-1-uninfected controls were included for comparison. Read More

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Immunogenicity of COVID-19 mRNA Vaccines in Pregnant and Lactating Women.

JAMA 2021 May 13. Epub 2021 May 13.

Harvard Medical School, Boston, Massachusetts.

Importance: Pregnant women are at increased risk of morbidity and mortality from COVID-19 but have been excluded from the phase 3 COVID-19 vaccine trials. Data on vaccine safety and immunogenicity in these populations are therefore limited.

Objective: To evaluate the immunogenicity of COVID-19 messenger RNA (mRNA) vaccines in pregnant and lactating women, including against emerging SARS-CoV-2 variants of concern. Read More

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[Preventive and therapeutic effects and mechanism of Xiaoer Feike Granules on chronic bronchitis induced by lipopolysaccharide in rats].

Zhongguo Zhong Yao Za Zhi 2021 Apr;46(8):2112-2118

College of Traditional Chinese Medicine, Chongqing Medical University Chongqing 400016, China.

The aim of this paper was to investigate the preventive and therapeutic effects of Xiaoer Feike Granules(XEFK) on chronic bronchitis in rats and its mechanism. Except for 10 rats in the blank group, the remaining 50 of the 60 SD rats were used to establish a model of chronic bronchitis induced by LPS. On the 22 nd day, the model rats were randomly divided into 5 groups according to their body weight, and administrated with purified water, Keteling Capsules 0. Read More

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NMD inhibition by 5-azacytidine augments presentation of immunogenic frameshift-derived neoepitopes.

iScience 2021 Apr 1;24(4):102389. Epub 2021 Apr 1.

Molecular Medicine Partnership Unit (MMPU), Heidelberg University, 69120 Heidelberg, Germany.

Frameshifted protein sequences elicit tumor-specific T cell-mediated immune responses in microsatellite-unstable (MSI) cancers if presented by HLA class I molecules. However, their expression and presentation are limited by nonsense-mediated RNA decay (NMD). We employed an unbiased immunopeptidomics workflow to analyze MSI HCT-116 cells and identified >10,000 HLA class I-presented peptides including five frameshift-derived InDel neoepitopes. Read More

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Systematic profiling of ferroptosis gene signatures predicts prognostic factors in esophageal squamous cell carcinoma.

Mol Ther Oncolytics 2021 Jun 20;21:134-143. Epub 2021 Feb 20.

Department of Thoracic Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China.

We developed a predictive model associated with ferroptosis to provide a more comprehensive view of esophageal squamous cell carcinoma (ESCC) immunotherapy. Gene expression data and corresponding clinical outcomes were obtained from the GEO and The Cancer Genome Atlas (TCGA) databases, and a ferroptosis-related gene set was obtained from the FerrDb database. We identified 45 ferroptosis-related genes that were differentially expressed, including enrichment in genes involved in the immune system process. Read More

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IL-6 Promotes the Proliferation and Immunosuppressive Function of Myeloid-Derived Suppressor Cells via the MAPK Signaling Pathway in Bladder Cancer.

Biomed Res Int 2021 23;2021:5535578. Epub 2021 Apr 23.

Department of Urology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.

Muscle-invasive bladder cancer (MIBC) is characterized by a highly complex immune environment, which is not well understood. Interleukin-6 (IL-6) is generated and secreted by multifarious types of cells, including tumor cells. This study was aimed at demonstrating that the levels of IL-6 and the number of myeloid-derived suppressor cells (MDSCs), with a positive correlation between them, increased in MIBC tissues, promoting MIBC cell proliferation, especially in patients with recurrence. Read More

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Clinical Use of Propranolol Reduces Biomarkers of Proliferation in Gastric Cancer.

Front Oncol 2021 26;11:628613. Epub 2021 Apr 26.

Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China.

Gastric cancer has one of the highest mortality rate in the world, but the treatment is still limited. Building on previous studies, mechanistic studies on propranolol in gastric cancer mice models and gastric cancer patients were performed. Propranolol inhibited the proliferation of gastric cancer cells in a time- and concentration-dependent manner. Read More

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Comprehensive co-expression analysis reveals TMC8 as a prognostic immune-associated gene in head and neck squamous cancer.

Oncol Lett 2021 Jul 27;22(1):498. Epub 2021 Apr 27.

Department of Oral and Maxillofacial Surgery, Stomatological Center, Peking University Shenzhen Hospital, Shenzhen, Guangdong 518036, P.R. China.

The occurrence and prognosis of head and neck squamous cell cancer (HNSC) is closely associated with human papillomavirus (HPV) infection. Transmembrane channel-like 8 (TMC8) is a key gene affecting the susceptibility of HPV and that plays an important role in T cell regulation. However, the mechanism by which TMC8 affects T cells and whether it further affects the prognosis of patients with HNSC remains unclear. Read More

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Contribution of T Cell Receptor Alpha and Beta CDR3, MHC Typing, V and J Genes to Peptide Binding Prediction.

Front Immunol 2021 26;12:664514. Epub 2021 Apr 26.

Department of Mathematics, Bar-Ilan University, Ramat Gan, Israel.

Introduction: Predicting the binding specificity of T Cell Receptors (TCR) to MHC-peptide complexes (pMHCs) is essential for the development of repertoire-based biomarkers. This affinity may be affected by different components of the TCR, the peptide, and the MHC allele. Historically, the main element used in TCR-peptide binding prediction was the Complementarity Determining Region 3 (CDR3) of the beta chain. Read More

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A Recombinant BCG Vaccine Is Safe and Immunogenic in Neonatal Calves and Reduces the Clinical Disease Caused by the Respiratory Syncytial Virus.

Front Immunol 2021 26;12:664212. Epub 2021 Apr 26.

Department of Veterinary Microbiology and Preventative Medicine, Iowa State University, Ames, IA, United States.

The human respiratory syncytial virus (hRSV) constitutes a major health burden, causing millions of hospitalizations in children under five years old worldwide due to acute lower respiratory tract infections. Despite decades of research, licensed vaccines to prevent hRSV are not available. Development of vaccines against hRSV targeting young infants requires ruling out potential vaccine-enhanced disease presentations. Read More

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Ruxolitinib, a JAK1/2 Inhibitor, Ameliorates Cytokine Storm in Experimental Models of Hyperinflammation Syndrome.

Front Pharmacol 2021 22;12:650295. Epub 2021 Apr 22.

Incyte Research Institute, Wilmington, DE, United States.

Hyperinflammatory syndromes comprise a heterogeneous group of disorders characterized by severe inflammation, multiple organ dysfunction, and potentially death. In response to antigenic stimulus (e.g. Read More

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Nanoparticles of Chitosan/Poly(D,L-Lactide-Co-Glycolide) Enhanced the Immune Responses of HCA59 Antigen in Model Mice.

Int J Nanomedicine 2021 4;16:3125-3139. Epub 2021 May 4.

MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, People's Republic of China.

Background: Hepatocellular carcinoma-associated antigen 59 (HCA59) from excretory/secretory products of is known to have the ability to modulate the functions of host cells. However, its immunogenicities using different nanoparticles adjuvants remain poorly understood.

Purpose: The study aimed to select an efficient nanoparticle antigen delivery system, which could enhance the immune responses of HCA59 in mice. Read More

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CD8 T cell metabolism in infection and cancer.

Nat Rev Immunol 2021 May 12. Epub 2021 May 12.

Division of Biological Sciences, Section of Molecular Biology, University of California, San Diego, La Jolla, CA, USA.

Cytotoxic CD8 T cells play a key role in the elimination of intracellular infections and malignant cells and can provide long-term protective immunity. In the response to infection, CD8 T cell metabolism is coupled to transcriptional, translational and epigenetic changes that are driven by extracellular metabolites and immunological signals. These programmes facilitate the adaptation of CD8 T cells to the diverse and dynamic metabolic environments encountered in the circulation and in the tissues. Read More

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PD-1 suppresses TCR-CD8 cooperativity during T-cell antigen recognition.

Nat Commun 2021 May 12;12(1):2746. Epub 2021 May 12.

Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA, USA.

Despite the clinical success of blocking its interactions, how PD-1 inhibits T-cell activation is incompletely understood, as exemplified by its potency far exceeding what might be predicted from its affinity for PD-1 ligand-1 (PD-L1). This may be partially attributed to PD-1's targeting the proximal signaling of the T-cell receptor (TCR) and co-stimulatory receptor CD28 via activating Src homology region 2 domain-containing phosphatases (SHPs). Here, we report PD-1 signaling regulates the initial TCR antigen recognition manifested in a smaller spreading area, fewer molecular bonds formed, and shorter bond lifetime of T cell interaction with peptide-major histocompatibility complex (pMHC) in the presence than absence of PD-L1 in a manner dependent on SHPs and Leukocyte C-terminal Src kinase. Read More

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Symptomatic hypocalcemia after treatment for hyperthyroidism in a woman with chromosome 22q11.2 deletion syndrome complicated by Graves' disease: longitudinal changes in the number of subsets of CD4 and CD8 lymphocytes after thyroidectomy.

Endocr J 2021 May 11. Epub 2021 May 11.

Department of Endocrinology and Metabolism, Dokkyo Medical University, Tochigi 321-0293, Japan.

Chromosome 22q11.2 deletion syndrome is a multisystem genetic disorder that presents with hypocalcemia due to congenital hypoparathyroidism; cardiovascular, renal, and facial anomalies; and skeletal defects. This syndrome is also associated with an increased risk of autoimmune disease. Read More

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Reference Ranges of Different Lymphocyte Subsets in Indian Children: A Multi-Centric Study.

Indian Pediatr 2021 May;58(5):424-429

Indian Council of Medical Research, New Delhi, India.

Objective: To determine the reference ranges of various lymphocyte subsets in healthy Indian children.

Design: Descriptive cross-sectional study.

Setting: Four centers in India representing four geographical regions. Read More

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TLR4 Transactivates CD8 T Lymphocytes upon Acute Sterile Tissue Injury.

Immunohorizons 2021 May 12;5(5):298-306. Epub 2021 May 12.

Department of Trauma, Hand, and Reconstructive Surgery, University Hospital Essen, University Duisburg-Essen, Essen, Germany; and

Acute major tissue injury induces immune dysregulation that is characterized by the development of systemic sterile inflammation and an increased risk for opportunistic infections. Although the contribution of the innate immune system has been examined in detail, research on the impact of acute sterile tissue damage on the T cell compartment remains limited. In the current study, we used a clinically relevant mouse model for traumatic skeletal muscle injury to investigate the impact of sterile tissue damage on diverse subpopulations of CD4 Th and CD8 cytotoxic T cells in systemic and local lymphoid organs. Read More

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DNGR-1 limits Flt3L-mediated antitumor immunity by restraining tumor-infiltrating type I conventional dendritic cells.

J Immunother Cancer 2021 May;9(5)

Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain

Background: Conventional type 1 dendritic cells (cDC1s) are central to antitumor immunity and their presence in the tumor microenvironment associates with improved outcomes in patients with cancer. DNGR-1 (CLEC9A) is a dead cell-sensing receptor highly restricted to cDC1s. DNGR-1 has been involved in both cross-presentation of dead cell-associated antigens and processes of disease tolerance, but its role in antitumor immunity has not been clarified yet. Read More

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The CD8 T Cell Noncytotoxic Antiviral Responses.

Microbiol Mol Biol Rev 2021 May 12;85(2). Epub 2021 May 12.

Division of Hematology/Oncology, Department of Medicine, University of California, San Francisco, San Francisco, California, USA

SUMMARYThe CD8 T cell noncytotoxic antiviral response (CNAR) was discovered during studies of asymptomatic HIV-infected subjects more than 30 years ago. In contrast to CD8 T cell cytotoxic lymphocyte (CTL) activity, CNAR suppresses HIV replication without target cell killing. This activity has characteristics of innate immunity: it acts on all retroviruses and thus is neither epitope specific nor HLA restricted. Read More

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CD4 T cells are essential for the development of destructive thyroiditis induced by anti-PD-1 antibody in thyroglobulin-immunized mice.

Sci Transl Med 2021 May;13(593)

Department of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan.

Immune-related adverse events induced by anti-programmed cell death-1 antibodies (PD-1-Ab), including destructive thyroiditis (thyroid-irAE), are thought to be caused by activated T cells. However, the T cell subsets that are directly responsible for damaging self-organs remain unclear. To clarify which T cell subsets are involved in the development of thyroid-irAE, a mouse model of thyroid-irAE was analyzed. Read More

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Anti-PD-1 checkpoint blockade improves the efficacy of a melphalan-based therapy in experimental melanoma.

Eur J Surg Oncol 2021 May 4. Epub 2021 May 4.

TIMM Laboratory, Sahlgrenska Center for Cancer Research, Department of Infectious Diseases, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden. Electronic address:

Introduction: The induction of adaptive cellular immunity in patients with in-transit melanoma metastasis treated with hyperthermic isolated limb perfusion (ILP) with melphalan has been shown to contribute to the effectiveness of the therapy. Activated CD8 T cells appear to be of particular importance for the efficacy of melphalan-based ILP therapy, as observed in both patients and animal models. In this study, we explored the possible synergistic effects of combining melphalan-based therapy with the checkpoint inhibitor anti-PD-1 on tumours in a mouse melanoma model. Read More

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PD-L1 and CD47 co-expression predicts survival and enlightens future dual-targeting immunotherapy in non-small cell lung cancer.

Thorac Cancer 2021 May 12. Epub 2021 May 12.

Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.

Backgroud: Recent studies have indicated that programmed cell death-ligand 1 (PD-L1) and cluster of differentiation 47 (CD47) play an essential role in tumor immune evasion and may serve as potential targets for combined immunotherapy. The aim of our study was to evaluate the PD-L1/CD47 expression status in lung squamous cell carcinoma (LUSC) and lung adenocarcinoma (LUAD), and explore its survival impact and relevance with the immune microenvironment.

Methods: The specimens from 190 LUSC and 240 LUAD patients who underwent intent-to-treat surgeries were retrospectively collected for immunohistochemistry assays of PD-L1, CD47, cluster of differentiation 8 (CD8), and cluster of differentiation 68 (CD68). Read More

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Incoming HIV virion-derived Gag Spacer Peptide 2 (p1) is a target of effective CD8 T cell antiviral responses.

Cell Rep 2021 May;35(6):109103

Nuffield Department of Medicine, University of Oxford, Oxford OX3 7FZ, UK; National Institute for Health Research Oxford Biomedical Research Centre, University of Oxford, Oxford OX4 2PG, UK; Immunocore Ltd, Milton, Abingdon OX14 4RY, UK; Research In Viral Eradication of Reservoirs (RIVER) trial study group. Electronic address:

Persistence of HIV through integration into host DNA in CD4 T cells presents a major barrier to virus eradication. Viral integration may be curtailed when CD8 T cells are triggered to kill infected CD4 T cells through recognition of histocompatibility leukocyte antigen (HLA) class I-bound peptides derived from incoming virions. However, this has been reported only in individuals with "beneficial" HLA alleles that are associated with superior HIV control. Read More

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Role of nuclear localization in the regulation and function of T-bet and Eomes in exhausted CD8 T cells.

Cell Rep 2021 May;35(6):109120

Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Parker Institute for Cancer Immunotherapy, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA. Electronic address:

The transcription factors T-bet and Eomesodermin (Eomes) regulate CD8 T cell exhaustion through undefined mechanisms. Here, we show that the subcellular localization of T-bet and Eomes dictate their regulatory activity in exhausted T cells (Ts). Ts had a higher ratio of nuclear Eomes:T-bet than memory T cells (Ts) during chronic lymphocytic choriomeningitis virus (LCMV) infection in preclinical cancer models and in human tumors. Read More

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A vaccine inducing solely cytotoxic T lymphocytes fully prevents Zika virus infection and fetal damage.

Cell Rep 2021 May;35(6):109107

Department of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL 60153, USA. Electronic address:

As vaccine-induced non-neutralizing antibodies may cause antibody-dependent enhancement of Zika virus (ZIKV) infection, we test a vaccine that induces only specific cytotoxic T lymphocytes (CTLs) without specific antibodies. We construct a DNA vaccine expressing a ubiquitinated and rearranged ZIKV non-structural protein 3 (NS3). The protein is immediately degraded and processed in the proteasome for presentation via major histocompatibility complex (MHC) class I for CTL generation. Read More

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Nanomaterial-based delivery vehicles for therapeutic cancer vaccine development.

Jie Liang Xiao Zhao

Cancer Biol Med 2021 May 12. Epub 2021 May 12.

CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety & CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing 100190, China.

Nanomaterial-based delivery vehicles such as lipid-based, polymer-based, inorganics-based, and bio-inspired vehicles often carry distinct and attractive advantages in the development of therapeutic cancer vaccines. Based on various delivery vehicles, specifically designed nanomaterials-based vaccines are highly advantageous in boosting therapeutic and prophylactic antitumor immunities. Specifically, therapeutic vaccines featuring unique properties have made major contributions to the enhancement of antigen immunogenicity, encapsulation efficiency, biocompatibility, and stability, as well as promoting antigen cross-presentation and specific CD8 T cell responses. Read More

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Malnutrition is associated with hyperinflammation and immunosuppression in COVID-19 patients: A prospective observational study.

Nutr Clin Pract 2021 May 12. Epub 2021 May 12.

Emergency Department, First Affiliated Hospital of Anhui Medical University, Hefei, PR, China.

Background: Coronavirus disease 2019 (COVID-19) is spreading globally and has caused many deaths. This study investigated, for the first time, COVID-19 patients' nutrition status and its effects on their inflammatory and immune responses.

Methods: Forty-seven COVID-19 patients were recruited for this prospective study. Read More

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Spatiotemporal regulation of galectin-1-induced T-cell death in lamina propria from Crohn's disease and ulcerative colitis patients.

Apoptosis 2021 May 12. Epub 2021 May 12.

Instituto de Estudios Inmunológicos y Fisiopatológicos-IIFP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), La Plata, Argentina.

Inflammatory bowel disease (IBD), including Crohn's disease (CD) and ulcerative colitis (UC), is characterized by chronic, relapsing intestinal inflammation. Galectin-1 (Gal-1) is an endogenous lectin with key pro-resolving roles, including induction of T-cell apoptosis and secretion of immunosuppressive cytokines. Despite considerable progress, the relevance of Gal-1-induced T-cell death in inflamed tissue from human IBD patients has not been ascertained. Read More

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Intratumoral Foxp3RORγt T cell infiltration determines poor prognosis and immunoevasive contexture in gastric cancer patients.

Cancer Immunol Immunother 2021 May 12. Epub 2021 May 12.

Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China.

Background: Foxp3RORγt T cells possess both characteristics of regulatory T cells and T helper 17 cells and show significant immunoregulatory functions in autoimmune diseases. However, the role and clinical significance of Foxp3RORγt T cells in gastric cancer remains unclear.

Methods: We enrolled 452 gastric cancer tissue microarray samples and 60 fresh tumor tissue samples from Zhongshan Hospital. Read More

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