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The Human Upper Respiratory Tract Epithelium Is Susceptible to Flaviviruses
In this study, we exposed apically well-differentiated human NECs cultured at the ALI to the related flaviviruses ZIKV, JEV, WNV, and Usutu virus (USUV). We selected these viruses due to the recent increasing evidences of potential threat to humans (Cadar et al., 2017; Simonin et al., 2018). We show that NECs are particularly susceptible to JEV and WNV infection and to other flaviviruses included in this study. Infection with each virus led to shedding of infectious virus particles through the apical and basolateral surfaces and triggered host mechanisms at the level of inflammatory and antiviral mediators....
Source: Frontiers in Microbiology - April 15, 2019 Category: Microbiology Source Type: research

The Promoter Regions of Intellectual Disability-Associated Genes Are Uniquely Enriched in LTR Sequences of the MER41 Primate-Specific Endogenous Retrovirus: An Evolutionary Connection Between Immunity and Cognition
Discussion We have found that, in the human genome, the promoter regions of ID-associated genes are uniquely enriched in MER41 LTRs. More specifically, nine ID-associated genes that are putatively important in cognitive evolution exhibit MER41 LTRs in their promoter regions. As more than 100 families of HERV are integrated into our genome, it was important to determine whether our findings are specific to MER41 and to ID-associated genes, and if so to what extent. Among the 133 families of HERV explored here, MER41 is the only family whose LTRs were found with statistically high frequency in the promoter regions of ID-ass...
Source: Frontiers in Genetics - April 11, 2019 Category: Genetics & Stem Cells Source Type: research

Autophagy Limits Inflammasome During Chlamydia pneumoniae Infection
In this study we found blocking autophagy led to increased CP growth in both macrophages and mouse embryonic fibroblasts. In vivo, loss of the autophagy elongation component ATG16L1 specifically in myeloid cells led to increased mortality in response to CP infection, characterized by greater numbers of neutrophils and dendritic cells, but no change in the CP burden in the lungs. This was accompanied by an increase in inflammasome-active macrophages and IL-1β production. While induction of autophagy in macrophages led to reduced CP growth in vitro, in vivo treatment with rapamycin led to increased mortality of infec...
Source: Frontiers in Immunology - April 11, 2019 Category: Allergy & Immunology Source Type: research

P38 and JNK Mitogen-Activated Protein Kinases Interact With Chikungunya Virus Non-structural Protein-2 and Regulate TNF Induction During Viral Infection in Macrophages
This study has been funded by the Council of Scientific and Industrial Research (CSIR), New Delhi, India, vide grant no 37 (1542)/12/EMR-II and Department of Science and Technology (DST-SERB), New Delhi, India, vide grant no EMR/2016/000854. It was also supported by Institute of life sciences, Bhubaneswar, under Department of Biotechnology and National Institute of Science Education and Research (NISER), Bhubaneswar, under Department of Atomic Energy (DAE), Government of India. Conflict of Interest Statement The authors declare that the research was conducted in the absence of any commercial or financial relationships th...
Source: Frontiers in Immunology - April 11, 2019 Category: Allergy & Immunology Source Type: research

Case Study: Mechanism for Increased Follicular Helper T Cell Development in Activated PI3K Delta Syndrome
This study was carried out after written informed consent from all subjects. All subjects gave written informed consent in accordance with the Declaration of Helsinki. The protocol was approved by the Stanford University and UCLA Institutional Review Boards. Author Contributions MB provided patient care and obtained IRB approval. RO prepared histology images. MB, TT, and RB designed the research. TT and LP conducted experiments and analyzed data. MB made the molecular model. MB and TT wrote the manuscript. Funding Funding for this work came from the Jeffrey Modell Foundation and from the NIH/NIGMS (R01 GM110482 to MB)....
Source: Frontiers in Immunology - April 11, 2019 Category: Allergy & Immunology Source Type: research

Experimental Analysis of Viral –Host Interactions
Experimental Analysis of Viral–Host Interactions Joseph Gillen and Aleksandra Nita-Lazar* Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States Viral and pathogen protein complexity is often limited by their relatively small genomes, thus critical functions are often accomplished by complexes of host and pathogen proteins. This requirement makes the study of host–pathogen interactions critical for the understanding of pathogenicity and virology. This review article discusses proteomic methods that offer a...
Source: Frontiers in Physiology - April 10, 2019 Category: Physiology Source Type: research

BKV Clearance Time Correlates With Exhaustion State and T-Cell Receptor Repertoire Shape of BKV-Specific T-Cells in Renal Transplant Patients
This study was approved by our local ethical review committee in compliance with the declaration of Helsinki. Informed and written consent was obtained from all patients (Ethic Committee Charité University Medicine, Berlin, Germany, EA2/028/13). The study cohort consisted of 7 kidney transplant recipients with sustained BKV reactivation (Table 1). The HLA typing for each patient and donor is summarized in Figure 1. TABLE 1 Table 1. Characteristics of patients with BKV reactivation. FIGURE 1 Figure 1. Recipient and donor HLA type. HLA type of the patients and their kidney donors. Black square i...
Source: Frontiers in Immunology - April 9, 2019 Category: Allergy & Immunology Source Type: research

Fc γR-TLR Cross-Talk Enhances TNF Production by Human Monocyte-Derived DCs via IRF5-Dependent Gene Transcription and Glycolytic Reprogramming
This study was done according to the ethical guidelines of the Academic Medical Center and human material was obtained in accordance with the AMC Medical Ethics Review Committee according to the Medical Research Involving Human Subjects Act. Buffy coats obtained after blood donation (Sanquin blood supply) are not subjected to informed consent, which is according to the Medical Research Involving Human Subjects Act and the AMC Medical Ethics Review Committee. All samples were handled anonymously. Ethical review and approval was not required for this study in accordance with the local legislation. Monocytes were isolated fro...
Source: Frontiers in Immunology - April 8, 2019 Category: Allergy & Immunology Source Type: research

BET Bromodomain Inhibitor iBET151 Impedes Human ILC2 Activation and Prevents Experimental Allergic Lung Inflammation
This study was supported by grants from GSK and the UK Medical Research Council (U105178805). Conflict of Interest Statement AM has grant funding from GSK and AstraZeneca/MedImmune. MB, DJ, AP, DT, and AvO are employees of GSK. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. Acknowledgments We are grateful to the Ares staff, genotyping facility, and flow cytometry core for their technical assistance. We thank Jen Walker for advice on the manuscript. Supplementary Material The Supplem...
Source: Frontiers in Immunology - April 8, 2019 Category: Allergy & Immunology Source Type: research

The Pivotal Role of Regulatory T Cells in the Regulation of Innate Immune Cells
This study was provided by the Canadian Institutes of Health Research and the Manitoba Health Research Council. Conflict of Interest Statement The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. References 1. Sprent J, Kishimoto H. The thymus and central tolerance. Philos Trans R Soc Lond B Biol Sci. (2001) 356:609–16. doi: 10.1098/rstb.2001.0846 PubMed Abstract | CrossRef Full Text | Google Scholar 2. Sakaguchi S, Wing K, Miyara M. Regulatory T cells - a brief history and perspective...
Source: Frontiers in Immunology - April 8, 2019 Category: Allergy & Immunology Source Type: research

Editorial: Orchestration of an Immune Response to Respiratory Pathogens
Steven M. Varga1 and Andrea J. Sant2* 1Microbiology and Immunology, University of Iowa, Iowa City, IA, United States2Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, Rochester, NY, United States Editorial on the Research Topic Orchestration of an Immune Response to Respiratory Pathogens This issue of Frontiers deals with the complex series of events and long-term consequences of immune responses to respiratory pathogens. In this issue, the contributors discuss the earliest events following infection, the alternative paths that the adaptive immune response can take an...
Source: Frontiers in Immunology - April 8, 2019 Category: Allergy & Immunology Source Type: research

President Slashes NIH Funding by 13 percent
The National Institutes of Health (NIH) would receive $34.4 billion in FY 2020, roughly $4.7 billion or 13 percent below the levels enacted by Congress for FY 2019, according to the President’s Budget released on March 11. The budget for NIH includes $492 million in funding made available through the 21st Century Cures Act and $150 million in mandatory funding. The leading biomedical research agency in the world would receive budget cuts across the board. All NIH centers are slated for budget reductions: National Cancer Institute: -8.7 percent National Heart, Lung, and Blood Institute: -14 percent National Inst...
Source: Public Policy Reports - March 19, 2019 Category: Biology Authors: AIBS Source Type: news

Corrigendum
With regard to the article in the December 2018 issue entitled, “Role of human forkhead box P3 in early thymic maturation and peripheral T-cell homeostasis” (J Allergy Clin Immunol 2018;142:1909-21.e9), the authors have notified the Journal that one co-author's funding grant was inadvertently omitted. The funding statement should be amended to read “Suppor t for Laura Passerini was provided from the Italian Ministry of Health GR-2011-02346941.” The authors regret the error.
Source: Journal of Allergy and Clinical Immunology - February 28, 2019 Category: Allergy & Immunology Tags: Corrigendum Source Type: research

Subcutaneous immunotherapy in patients with eosinophilic esophagitis
Dr. Dellon is a consultant for Adare, Alivio, Allakos, Banner, Calypso, Enumeral, EsoCap, GSK, Gossamer Bio, Receptos/Celegene, Regeneron, Robarts, and Shire, receives research funding from Allakos, Adare, GSK, Meritage, Miraca, Nutricia, Receptos/Celgene, Regeneron, and Shire, and has received an educational grant from Allakos, Banner, and Holoclara. None of the other authors report and potential conflicts of interest with this study.
Source: Annals of Allergy, Asthma and Immunology - February 28, 2019 Category: Allergy & Immunology Authors: Benjamin S. Robey, Swathi Eluri, Craig C. Reed, Maya R. Jerath, Michelle L. Hernandez, Scott P. Commins, Evan S. Dellon Tags: Letters Source Type: research

Pro-Con Debate: Component resolved diagnostic testing is not useful for making food allergy diagnoses
Funding: none
Source: Annals of Allergy, Asthma and Immunology - February 14, 2019 Category: Allergy & Immunology Authors: Matthew Greenhawt. Tags: Perspective Source Type: research