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Tania Singh, Luis Sarmiento, Cheng Luan, Rashmi B Prasad, Jenny Johansson, Luis R Cataldo, Erik Renström, Shamit Soneji, Corrado Cilio, Isabella Artner
Type 1 (T1D) and type 2 (T2D) diabetes are triggered by a combination of environmental and/or genetic factors. Maf transcription factors regulate pancreatic beta (β)-cell function, and have also been implicated in the regulation of immunomodulatory cytokines like interferon-β (IFNβ1). In this study, we assessed MAFA and MAFB co-expression with pro-inflammatory cytokine signaling genes in RNA-seq data from human pancreatic islets. Interestingly, MAFA expression was strongly negatively correlated with cytokine-induced signaling (such as IFNAR1 , DDX58 ) and T1D susceptibility genes ( IFIH1 ), whereas correlation of these genes with MAFB was weaker...
December 18, 2018: Genes
Glenn Hamonic, J Alex Pasternak, Nikki M Forsberg, Tobias Käser, Heather L Wilson
Preservation of a pathogen free uterine environment is critical for maintaining healthy swine herds with high reproductive performance. Considering that uterine epithelial cells are the most numerous and thus likely point of cellular contact for pathogens in the uterus, we hypothesize that these cells may be critical for activating the immune system to clear uterine infections. Although uterine epithelial cells have not been well characterized in pigs, studies in several other species have shown that these cells express several pattern recognition receptors (PRR) and thus may act as sentinels for the uterine immune response...
August 2018: Veterinary Immunology and Immunopathology
Yu-Feng Shen, Lei Liu, Chen-Zhang Feng, Yang Hu, Cheng Chen, Gao-Xue Wang, Bin Zhu
Coumarin as a lead structure have received a considerable attention in the last three decades for the discovery of antiviral agents. Our previous study indicated that imidazole coumarins possessed antiviral activities against SVCV. Based on the structure-activity relationship in that study, a new imidazole coumarin derivative, 7-(4-benzimidazole-butoxy)-coumarin (BBC), was designed, synthesized and its anti-SVCV activity was evaluated. By comparing inhibitory concentration at half-maximal activity (IC50 ), we found that BBC (IC50  = 0...
October 2018: Fish & Shellfish Immunology
T M Sokolova, V V Poloskov, A N Shuvalov, I A Rudneva, T A Timofeeva
In culture of THP-1 cells differentiated into macrophages with PMA (THP-PMA macrophages) infected with influenza viruses of subtypes H1, H5 and H9, we measured the expression of TLR7 and RIG1 receptor genes, sensors of viral RNA and ribonucleoprotein, and the levels of production of inflammatory cytokines IL-1β, TNFα, IL-10, and IFNα. The sensitivity and inflammatory response of THP-PMA macrophages to pandemic influenza A virus H1N1pdm09 and avian influenza H5N2 and H9N2 viruses correlate with the intracellular level of their viral RNA and activation of the RIG1 gene...
March 2018: Bulletin of Experimental Biology and Medicine
Camila Rubio-Patiño, Jozef P Bossowski, Gian Marco De Donatis, Laura Mondragón, Elodie Villa, Lazaro E Aira, Johanna Chiche, Rana Mhaidly, Cynthia Lebeaupin, Sandrine Marchetti, Konstantinos Voutetakis, Aristotelis Chatziioannou, Florence A Castelli, Patricia Lamourette, Emeline Chu-Van, François Fenaille, Tony Avril, Thierry Passeron, John B Patterson, Els Verhoeyen, Béatrice Bailly-Maitre, Eric Chevet, Jean-Ehrland Ricci
Dietary restriction (DR) was shown to impact on tumor growth with very variable effects depending on the cancer type. However, how DR limits cancer progression remains largely unknown. Here, we demonstrate that feeding mice a low-protein (Low PROT) isocaloric diet but not a low-carbohydrate (Low CHO) diet reduced tumor growth in three independent mouse cancer models. Surprisingly, this effect relies on anticancer immunosurveillance, as depleting CD8+ T cells, antigen-presenting cells (APCs), or using immunodeficient mice prevented the beneficial effect of the diet...
April 3, 2018: Cell Metabolism
Niki Karachaliou, Maria Gonzalez-Cao, Guillermo Crespo, Ana Drozdowskyj, Erika Aldeguer, Ana Gimenez-Capitan, Cristina Teixido, Miguel Angel Molina-Vila, Santiago Viteri, Maria De Los Llanos Gil, Salvador Martin Algarra, Elisabeth Perez-Ruiz, Ivan Marquez-Rodas, Delvys Rodriguez-Abreu, Remedios Blanco, Teresa Puertolas, Maria Angeles Royo, Rafael Rosell
Background: Programmed death-ligand 1 (PD-L1) may be induced by oncogenic signals or can be upregulated via interferon gamma (IFN-γ). We have explored whether the expression of IFNG, the gene encoding IFN-γ, is associated with clinical response to the immune checkpoint blockade in non-small cell lung cancer (NSCLC) and melanoma patients. The role of inflammation-associated transcription factors STAT3, IKBKE, STAT1 and other associated genes has also been examined. Methods: Total RNA from 17 NSCLC and 21 melanoma patients was analyzed by quantitative reverse transcription PCR...
2018: Therapeutic Advances in Medical Oncology
Nina Sopel, Andreas Pflaum, Julia Kölle, Susetta Finotto
Asthma bronchiale is a disease of the airways with increasing incidence, that often begins during infancy. So far, therapeutic options are mainly symptomatic and thus there is an increasing need for better treatment and/or prevention strategies. Human rhinoviruses (HRVs) are a major cause of asthma exacerbations and might cause acute wheezing associated with local production of pro-inflammatory mediators resulting in neutrophilic inflammatory response. Viral infections induce a characteristic activation of immune response, e...
2017: Frontiers in Immunology
Nazish Sayed, Frank Ospino, Farhan Himmati, Jieun Lee, Palas Chanda, Edward S Mocarski, John P Cooke
We have revealed a critical role for innate immune signaling in nuclear reprogramming to pluripotency, and in the nuclear reprogramming required for somatic cell transdifferentiation. Activation of innate immune signaling causes global changes in the expression and activity of epigenetic modifiers to promote epigenetic plasticity. In our previous articles, we focused on the role of toll-like receptor 3 (TLR3) in this signaling pathway. Here, we define the role of another innate immunity pathway known to participate in response to viral RNA, the retinoic acid-inducible gene 1 receptor (RIG-1)-like receptor (RLR) pathway...
May 2017: Stem Cells
Anna Yu Alekseeva, Larisa V Kameneva, Svetlana V Kostyuk, Natalia N Veiko
Oxidized cell-free DNA acts as a stress signal molecule and triggers an adaptive response in human cells. Various membrane DNA recognizing receptors are known as potential sensors for such DNA fragments. In order to clarify which of these sensors are able to interact with cfDNA fragments, circulating in human blood flow in heath and disease, we studied the influence of various cfDNA types on endothelial cells. We incubated these fragments at a physiologically optimal concentration with HUVEC cells for 3-24 h and detected the expression of either TLR9 or AIM2, RIG1 and STING receptors at mRNA and protein levels...
2016: Advances in Experimental Medicine and Biology
Zhao-Wan Yang, Yan-Hua Jiang, Chuang Ma, Guido Silvestri, Steven E Bosinger, Bai-Lian Li, Ambrose Jong, Yan-Hong Zhou, Sheng-He Huang
To explore the differences between the extreme SIV infection phenotypes, nonprogression (BEN: benign) to AIDS in sooty mangabeys (SMs) and progression to AIDS (MAL: malignant) in rhesus macaques (RMs), we performed an integrated dual positive-negative connectivity (DPNC) analysis of gene coexpression networks (GCN) based on publicly available big data sets in the GEO database of NCBI. The microarray-based gene expression data sets were generated, respectively, from the peripheral blood of SMs and RMs at several time points of SIV infection...
2016: PloS One
T M Sokolova, V V Poloskov, A N Shuvalov, I A Rudneva, F I Ershov
The innate immune receptors TLR4, TLR7, TLR8, and RIG1 recognized the structures of the influenza viruses in human lymphocytes and were activated by the recombinant avian influenza virus A/Vietnam/1203/04 and its escape-mutant m13(13) during early period of interaction. The stimulated levels are not connected with viral reproduction. Donor cells with the low constitutive immune receptors gene expression levels showed higher stimulation. Inflammation virus effects resulted in. increasing production of TNF-alpha and IFN-gamma by lymphocytes...
2016: Voprosy Virusologii
Shruti Chowdhari, Neeru Saini
Photochemotherapy using 8-methoxypsoralen in combination with UVA radiation (PUVA) is an effective treatment for various skin dermatosis including psoriasis however its molecular mechanism is not clear. Previously we demonstrated that PUVA differentially regulates miRNA expression profile with a significant up-regulation of hsa-miR-4516. To study in detail the molecular mechanism of PUVA in keratinocytes, we investigated the genome wide transcriptomic changes using Illumina whole genome gene expression beadchip...
January 2016: Cellular Signalling
Mihai Nita-Lazar, Aditi Banerjee, Chiguang Feng, Gerardo R Vasta
Influenza patients frequently display increased susceptibility to Streptococcus pneumoniae co-infection and sepsis, the prevalent cause of mortality during influenza pandemics. However, the detailed mechanisms by which an influenza infection predisposes patients to suffer pneumococcal pneumonia are not fully understood. A murine model for influenza infection closely reflects the observations in human patients, since if the animals that have recovered from influenza A virus (IAV) sublethal infection are challenged with S...
December 2015: Molecular Immunology
Ayesha Obaid, Jamil Ahmad, Anam Naz, Faryal Mehwish Awan, Rehan Zafar Paracha, Samar Hayat Khan Tareen, Sadia Anjum, Abida Raza, Jan Baumbach, Amjad Ali
An in-depth understanding of complex systems such as hepatitis C virus (HCV) infection and host immunomodulatory response is an open challenge for biologists. In order to understand the mechanisms involved in immune evasion by HCV, we present a simplified formalization of the highly dynamic system consisting of HCV, its replication cycle and host immune responses at the cellular level using hybrid Petri net (HPN). The approach followed in this study comprises of step wise simulation, model validation and analysis of host immune response...
May 2015: Integrative Biology: Quantitative Biosciences From Nano to Macro
Wang Yanping, Wang Huaizhong, Guo Jianfeng, Wang Haifei, Liu Jianfeng, Wang Jiying
Polyinosinic-polycytidylic acid (Poly I:C) is an analogue of natural double strand RNA (dsRNA), which can simulate the viral dsRNA and stimulate the immune response. In the present study, peripheral blood mononuclear cells (PBMC) were isolated from piglets of Dapulian and Landrace with different disease resistance, and stimulated with 20 μg/mL Poly I:C for 24 hours in vitro culture. The expression of several cytokines (IL6, IL8, TNFα, IL10, IRF3, IFNα and IFNγ) and three pattern recognition receptors (TLR3, TLR4 and RIG1) was determined by qRT-PCR...
January 2015: Yi Chuan, Hereditas
Deepak Kaul, M Arora, A Garg, S Sharma
The paracaspase mucosa-associated lymphoid tissue 1 (MALT1) has been widely recognized to play crucial role in lymphocyte activation, development and the generation of lymphomas through the modulation of innate and adaptive immune responses. Our results reported here provide evidence for the first time to support the view that MALT1 exerts its effect upon immune response involving genes coding for retinoic acid-inducible gene 1 (RIG1); interferon-β (IFN-β); apo-lipoprotein B mRNA-editing, enzyme-catalytic, polypeptide-like 3G (APOBEC3G); IFN-γ; chemokine (C-C motif) ligand 5 (CCL5) and interleukin-17 (IL-17) through the initiation of cellular miR-2909 RNomics...
March 2015: Molecular Immunology
Bouabid Badaoui, Teresa Rutigliano, Anna Anselmo, Merijn Vanhee, Hans Nauwynck, Elisabetta Giuffra, Sara Botti
Porcine reproductive and respiratory syndrome virus (PRRSV) mainly infects porcine alveolar macrophages (PAMs), resulting in porcine reproductive and respiratory syndrome (PRRS) in pigs. Most of the transcriptomic studies on PAMs infected with PRRSV conducted thus far have made use of microarray technology. Here, we investigated the transcriptome of PAMs in vitro at 12 h post-infection with two European PRRSV strains characterized by low (Lelystad, LV) and high (Lena) virulence through RNA-Seq. The expression levels of genes, isoforms, alternative transcription start sites (TSS) and differential promoter usage revealed a complex pattern of transcriptional and post-transcriptional gene regulation upon infection with the two strains...
2014: PloS One
Manvender Singh, Biswajit Brahma, Jitendra Maharana, Mahesh Chandra Patra, Sushil Kumar, Purusottam Mishra, Megha Saini, Bidhan Chandra De, Sourav Mahanty, Tirtha Kumar Datta, Sachinandan De
RIG1 and MDA5 have emerged as important intracellular innate pattern recognition receptors that recognize viral RNA and mediate cellular signals controlling Type I interferon (IFN-I) response. Buffalo RIG1 and MDA5 genes were investigated to understand the mechanism of receptor induced antiviral response. Sequence analysis revealed that RIG1 and MDA5 maintain a domain arrangement that is common in mammals. Critical binding site residues of the receptors are evolutionary conserved among mammals. Molecular dynamics simulations suggested that RIG1 and MDA5 follow a similar, if not identical, dsRNA binding pattern that has been previously reported in human...
2014: PloS One
Pierre Boudinot, Jun Zou, Tatsuya Ota, Francesco Buonocore, Giuseppe Scapigliati, Adriana Canapa, John Cannon, Gary Litman, John D Hansen
The recent availability of both robust transcriptome and genome resources for coelacanth (Latimeria chalumnae) has led to unique discoveries for coelacanth immunity such as the lack of IgM, a central component of adaptive immunity. This study was designed to more precisely address the origins and evolution of gene families involved in the initial recognition and response to microbial pathogens, which effect innate immunity. Several multigene families involved in innate immunity are addressed, including: Toll-like receptors (TLRs), retinoic acid inducible gene 1 (RIG1)-like receptors (RLRs), the nucleotide-binding domain and leucine-rich repeat containing proteins (NLRs), diverse immunoglobulin domain-containing proteins (DICP) and modular domain immune-type receptors (MDIRs)...
September 2014: Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution
Paloma Encinas, Pablo Garcia-Valtanen, Blanca Chinchilla, Eduardo Gomez-Casado, Amparo Estepa, Julio Coll
Spring viremia carp virus (SVCV) is a rhabdovirus seasonally affecting warm-water cyprinid fish farming causing high impacts in worldwide economy. Because of the lack of effective preventive treatments, the identification of multipath genes involved in SVCV infection might be an alternative to explore the possibilities of using drugs for seasonal prevention of this fish disease. Because the zebrafish (Danio rerio) is a cyprinid susceptible to SVCV and their genetics and genome sequence are well advanced, it has been chosen as a model for SVCV infections...
2013: PloS One
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