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https://www.readbyqxmd.com/read/29324305/caveolin-mediated-endocytosis-of-the-chlamydia-m278-outer-membrane-peptide-encapsulated-in-poly-lactic-acid-poly-ethylene-glycol-nanoparticles-by-mouse-primary-dendritic-cells-enhances-specific-immune-effectors-mediated-by-mhc-class-ii-and-cd4-t-cells
#1
Saurabh Dixit, Rajnish Sahu, Richa Verma, Skyla Duncan, Guillermo H Giambartolomei, Shree R Singh, Vida A Dennis
We previously developed a Chlamydia trachomatis nanovaccine (PPM) by encapsulating a chlamydial M278 peptide within poly(lactic acid)-poly(ethylene glycol) biodegradable nanoparticles that immunopotentiated Chlamydia-specific immune effector responses in mice. Herein, we investigated the mechanistic interactions of PPM with mouse bone marrow-derived dendritic cells (DCs) for its uptake, trafficking, and T cell activation. Our results reveal that PPM triggered enhanced expression of effector cytokines and chemokines, surface activation markers (Cd1d2, Fcgr1), pathogen-sensing receptors (TLR2, Nod1), co-stimulatory (CD40, CD80, CD86) and MHC class I and II molecules...
December 26, 2017: Biomaterials
https://www.readbyqxmd.com/read/29317357/novel-identified-aluminum-hydroxide-induced-pathways-proof-monocyte-activation-and-pro-inflammatory-preparedness
#2
Sietske Kooijman, Jolanda Brummelman, Cécile A C M van Els, Fabio Marino, Albert J R Heck, Geert P M Mommen, Bernard Metz, Gideon F A Kersten, Jeroen L A Pennings, Hugo D Meiring
Aluminum-based adjuvants are the most widely used adjuvants in human vaccines. A comprehensive understanding of the mechanism of action of aluminum adjuvants at the molecular level, however, is still elusive. Here, we unravel the effects of aluminum hydroxide Al(OH)3 by a systems-wide analysis of the Al(OH)3-induced monocyte response. Cell response analysis by cytokine release was combined with (targeted) transcriptome and full proteome analysis. Results from this comprehensive study revealed two novel pathways to become activated upon monocyte stimulation with Al(OH)3: the first pathway was IFNβ signaling possibly induced by DAMP sensing pathways like TLR or NOD1 activation, and second the HLA class I antigen processing and presentation pathway...
January 6, 2018: Journal of Proteomics
https://www.readbyqxmd.com/read/29303910/involvement-of-nucleotide-binding-and-oligomerization-domain-like-receptors-in-the-intestinal-injury-of-severe-acute-pancreatitis-in-rats
#3
Shan Xu, Shuqing Wei, Yu Guo, Donglai Cui, Jinfeng Yao
OBJECTIVES: The aim of the study was to observe the role of nucleotide-binding and oligomerization domain (NOD)-like receptors (NLR) in intestine injury of severe acute pancreatitis (SAP) in rats. METHODS: Severe acute pancreatitis was induced by retrograde infusion of sodium taurocholate into the biliopancreatic duct. Rats were divided into the following 6 groups: sham operation, SAP treated with saline, and SAP treated with interleukin 1β (IL-1β)-converting enzyme inhibitor, killed at 6 or 12 hours after operation...
January 5, 2018: Pancreas
https://www.readbyqxmd.com/read/29242132/molecular-characterization-expression-and-functional-analysis-of-nod1-nod2-and-nlrc3-in-nile-tilapia-oreochromis-niloticus
#4
Feng-Ying Gao, Ji-Cai Pang, Mai-Xin Lu, Xian-le Yang, Hua-Ping Zhu, Xiao-Li Ke, Zhi-Gang Liu, Jian-Meng Cao, Miao Wang
The nucleotide-binding oligomerization domain proteins NOD1, NOD2 and NLRC3 are cytoplasmic pattern recognition receptors (PRRs) of the Nod-like receptor (NLR) family. In the present study, the Nile tilapia (Oreochromis niloticus) NOD1 (ntNOD1), NOD2 (ntNOD2) and NLRC3 (ntNLRC3) genes were cloned and characterized. The full-length ntNOD1, ntNOD2 and ntNLRC3 genes were 3924, 3886 and 4574 bp, encoding 941, 986 and 1130 amino acids, respectively. The three Nod-like receptors have a NACHT domain and a C-terminal leucine-rich repeat (LRR) domain...
December 11, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29234083/nod2-is-required-for-the-early-innate-immune-clearance-of-acinetobacter-baumannii-from-the-lungs
#5
Sandeep D Kale, Neha Dikshit, Pankaj Kumar, Vanniarajan Balamuralidhar, Hanif Javanmard Khameneh, Najib Bin Abdul Malik, Tse Hsien Koh, Gladys Gek Yen Tan, Thuan Tong Tan, Alessandra Mortellaro, Bindu Sukumaran
Acinetobacter baumannii (A. baumannii) is a significant cause of severe nosocomial pneumonia in immunocompromised individuals world-wide. With limited treatment options available, a better understanding of host immnity to A. baumannii infection is critical to devise alternative control strategies. Our previous study has identified that intracellular Nod1/Nod2 signaling pathway is required for the immune control of A. baumannii in airway epithelial cells in vitro. In the current study, using Nod2-/- mice and an in vivo sublethal model of pulmonary infection, we show that Nod2 contributes to the early lung defense against A...
December 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29211798/lipl21-lipoprotein-binding-to-peptidoglycan-enables-leptospira-interrogans-to-escape-nod1-and-nod2-recognition
#6
Gwenn Ratet, Ignacio Santecchia, Martine Fanton d'Andon, Frédérique Vernel-Pauillac, Richard Wheeler, Pascal Lenormand, Frédéric Fischer, Pierre Lechat, David A Haake, Mathieu Picardeau, Ivo G Boneca, Catherine Werts
Leptospirosis is a widespread zoonosis, potentially severe in humans, caused by spirochetal bacteria, Leptospira interrogans (L. interrogans). Host defense mechanisms involved in leptospirosis are poorly understood. Recognition of lipopolysaccharide (LPS) and lipoproteins by Toll-Like Receptors (TLR)4 and TLR2 is crucial for clearance of leptospires in mice, yet the role of Nucleotide Oligomerization Domain (NOD)-like receptors (NOD)1 and NOD2, recognizing peptidoglycan (PG) fragments has not previously been examined...
December 6, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/29207344/nod1-and-nod2-molecular-targets-in-prevention-and-treatment-of-infectious-diseases
#7
REVIEW
Mikhail V Pashenkov, Yulia A Dagil, Boris V Pinegin
Nucleotide-binding oligomerization domain (NOD) 1 and NOD2 are pattern-recognition receptors responsible for sensing fragments of bacterial peptidoglycan known as muropeptides. Stimulation of innate immunity by systemic or local administration of NOD1 and NOD2 agonists is an attractive means to prevent and treat infectious diseases. In this review, we discuss novel data concerning structural features of selective and non-selective (dual) NOD1 and NOD2 agonists, main signaling pathways and biological effects induced by NOD1 and NOD2 stimulation, including induction of pro-inflammatory cytokines, type I interferons and antimicrobial peptides, induction of autophagy, alterations of metabolism...
December 2, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/29173586/differential-immune-related-gene-expression-in-the-spleens-of-duck-tembusu-virus-infected-goslings
#8
Yu He, Anqi Wang, Shun Chen, Zhen Wu, Jinyue Zhang, Mingshu Wang, Renyong Jia, Dekang Zhu, Mafeng Liu, Qiao Yang, Ying Wu, Kunfeng Sun, Xiaoyue Chen, Anchun Cheng
Flaviviruses pose a significant threat to public health worldwide. Recently, a novel flavivirus, duck Tembusu virus (TMUV), was identified as the causative agent of a serious duck viral disease in Asia. Its rapid spread and expanded host range have raised substantial concerns regarding its potential threat to non-avian hosts, including humans. However, the specific molecular host responses to this virus are poorly understood. In this study, we used the RNA-sequencing technique to analyse the differential gene expression in the spleens of infected goslings 5days post-infection...
December 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/29165176/the-different-roles-of-innate-immune-receptors-in-inflammation-and-carcinogenesis-between-races
#9
Natsu Yamaguchi, Yoshimi Suzuki, M H Mahbub, Hidekazu Takahashi, Ryosuke Hase, Yasutaka Ishimaru, Hiroshi Sunagawa, Rie Watanabe, Yoshinobu Eishi, Tsuyoshi Tanabe
Innate immune factors exert widespread effects on cytokine secretion, cell survival, autophagy, and apoptosis. Nucleotide-binding and oligomerization domain-like receptors (NLRs) are members of the innate immune system in the cytosol that sense pathogens, endogenous danger molecules such as uric acid, and pollutants. Nucleotide-binding oligomerization domain-containing protein 1 and 2 (NOD1 and NOD2) are components of NLR family, and ligands of these factors are γ-D-glutamyl-meso-diaminopimelic acid (iE-DAP) and muramyl dipeptide (MDP), respectively...
October 11, 2017: Environmental Health and Preventive Medicine
https://www.readbyqxmd.com/read/29123157/the-nod2-receptor-is-crucial-for-immune-responses-towards-new-world-leishmania-species
#10
Jéssica Cristina Dos Santos, Michelle S M A Damen, Marije Oosting, Dirk J de Jong, Bas Heinhuis, Rodrigo Saar Gomes, Carla Santos Araújo, Mihai G Netea, Fátima Ribeiro-Dias, Leo A B Joosten
American Tegumentary Leishmaniasis is a chronic infection caused by Leishmania protozoan. It is not known whether genetic variances in NOD-like receptor (NLR) family members influence the immune response towards Leishmania parasites and modulate intracellular killing. Using functional genomics, we investigated whether genetic variants in NOD1 or NOD2 influence the production of cytokines by human PBMCs exposed to Leishmania. In addition, we examined whether recognition of Leishmania by NOD2 contributes to intracellular killing...
November 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29103703/anti-inflammatory-capacity-of-lactobacillus-rhamnosus-gg-in-monophasic-variant-salmonella-infected-piglets-is-correlated-with-impeding-nlrp6-mediated-host-inflammatory-responses
#11
Jiao Yu, Yao-Hong Zhu, Gui-Yan Yang, Wei Zhang, Dong Zhou, Jin-Hui Su, Jiu-Feng Wang
In this study, we investigated the effect of Lactobacillus rhamnosus GG strain (LGG) in ameliorating enteritis in newly weaned pigs following challenge with a monophasic variant of Salmonella enterica serovar Typhimurium (serotyped as 4,[5],12:i:-), which has been linked to disease in humans and livestocks over the past 10 years. In weaned pigs, S. enterica serovar 4,[5],12:i:- induced the mRNA expression of toll like receptor (TLR) 5 and TLR4, while increasing interleukin (IL)-8 and IL-6 mRNA expression in the jejunum...
October 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/29097236/haemophilus-parasuis-infection-activates-nod1-2-rip2-signaling-pathway-in-pk-15%C3%A2-cells
#12
Bin Ma, Kexin Hua, Shanshan Zhou, Hufeng Zhou, Yushan Chen, Rui Luo, Dingren Bi, Rui Zhou, Qigai He, Hui Jin
Haemophilus parasuis, an important swine pathogen, was recently proven able to invade into endothelial or epithelial cell in vitro. NOD1/2 are specialized NLRs that participate in the recognition of pathogens able to invade intracellularly and therefore, we assessed that the contribution of NOD1/2 to inflammation responses during H. parasuis infection. We observed that H. parasuis infection enhanced NOD2 expression and RIP2 phosphorylation in porcine kidney 15 cells. Our results also showed that knock down of NOD1/2 or RIP2 expression respectively significantly decreased H...
October 31, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/29067026/characterization-of-rabbit-nucleotide-binding-oligomerization-domain-1-nod1-and-the-role-of-nod1-signaling-pathway-during-bacterial-infection
#13
Mengjiao Guo, Fahao Wu, Zhongfang Zhang, Guangen Hao, Rong Li, Ning Li, Yingli Shang, Liangmeng Wei, Tongjie Chai
Nucleotide-binding oligomerization domain 1 (NOD1) is the most prominent of all NOD-like receptors, which in the mammalian innate immune system, serve as intracellular receptors for pathogens and endogenous molecules during tissue injury. From rabbit kidney cells, we cloned rabbit NOD1 (rNOD1) and identified an N-terminal caspase activation and recruitment domain, a central NACHT domain, and C-terminal leucine-rich repeat domains. rNOD1 was expressed in all tested tissues; infection with Escherichia coli induced significantly higher expression in the spleen, liver, and kidney compared to other tissues...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29042497/a-single-dual-function-enzyme-controls-the-production-of-inflammatory-nod-agonist-peptidoglycan-fragments-by-neisseria-gonorrhoeae
#14
Jonathan D Lenz, Kathleen T Hackett, Joseph P Dillard
Neisseria gonorrhoeae gonococcus (GC) is a Gram-negative betaproteobacterium and causative agent of the sexually transmitted infection gonorrhea. During growth, GC releases lipooligosaccharide (LOS) and peptidoglycan (PG) fragments, which contribute significantly to the inflammatory damage observed during human infection. In ascending infection of human Fallopian tubes, inflammation leads to increased risk of ectopic pregnancy, pelvic inflammatory disease, and sterility. Of the PG fragments released by GC, most are disaccharide peptide monomers, and of those, 80% have tripeptide stems despite the observation that tetrapeptide stems make up 80% of the assembled cell wall...
October 17, 2017: MBio
https://www.readbyqxmd.com/read/29030987/nod1-downregulates-intestinal-serotonin-transporter-and-interacts-with-other-pattern-recognition-receptors
#15
Elena Layunta, Eva Latorre, Raquel Forcén, Laura Grasa, Miguel Ángel Plaza, Maykel Arias, Ana I Alcalde, José E Mesonero
Serotonin (5-HT) is an essential gastrointestinal modulator whose effects regulate the intestinal physiology. 5-HT effects depend on extracellular 5-HT bioavailability, which is controlled by the serotonin transporter (SERT) expressed in both the apical and basolateral membranes of enterocytes. SERT is a critical target for regulating 5-HT levels and consequently, modulating the intestinal physiology. The deregulation of innate immune receptors has been extensively studied in inflammatory bowel diseases (IBD), where an exacerbated defense response to commensal microbiota is observed...
October 14, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29021509/nucleotide-binding-oligomerization-domain-1-and-gastrointestinal-disorders
#16
Tomohiro Watanabe, Naoki Asano, Masatoshi Kudo, Warren Strober
Nucleotide-binding oligomerization domain 1 (NOD1) is an intracellular sensor that detects small peptides derived from the cell wall component of intestinal microflora. NOD1 is expressed in both non-hematopoietic cells such as epithelial cells and hematopoietic cells such as antigen-presenting cells. Detection of its ligand by NOD1 leads to innate immune responses through activation of nuclear factor kappa B and type I interferon as well as induction of autophagy. Innate immune responses through NOD1 activation play an indispensable role both in host defense against microbial infection and in the development of gastrointestinal disorders...
2017: Proceedings of the Japan Academy. Series B, Physical and Biological Sciences
https://www.readbyqxmd.com/read/28990073/nod-receptor-and-tlr9-modulation-in-severe-acute-pancreatitis%C3%A2-induced-intestinal-injury
#17
Yupeng Yan, Bin Lu, Pengyang Li, Ji Wang
Severe acute pancreatitis (SAP) has a rapid onset and may cause multiple organ dysfunction syndrome (MODS), which has high mortality. Nucleotide binding oligomerization domain (NOD) receptor and Toll‑like receptor 9 (TLR9), a pattern recognition receptor in innate immunity, are involved in inflammation, immunity and pathogen recognition. The role and mechanism of the NOD receptor and TLR9 in early MODS of SAP‑induced intestinal injury, however, remain unclear. Wistar rats were divided into control, SAP, TLR9 inhibitor and NOD receptor activation groups...
December 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28962692/expression-and-function-of-nod-like-receptors-by-human-term-gestation-associated-tissues
#18
Aled H Bryant, Ryan J Bevan, Samantha Spencer-Harty, Louis M Scott, Ruth H Jones, Catherine A Thornton
INTRODUCTION: Nucleotide-binding oligomerization domain (NOD)-like receptors or NOD-like receptors (NLRs) have been implicated in several disease pathologies associated with inflammation. Since local and systemic inflammation is a hallmark of both term and preterm labour, a role for NLRs at the materno-fetal interface has been postulated. METHODS: Gene expression and immunolocalisation of NLR family members in human placenta, choriodecidua, and amnion were examined...
October 2017: Placenta
https://www.readbyqxmd.com/read/28958208/copper-zinc-loaded-montmorillonite-influences-intestinal-integrity-the-expression-of-genes-associated-with-inflammation-tlr4-myd88-and-tgf-%C3%AE-1-signaling-pathways-in-weaned-pigs-after-lps-challenge
#19
Lefei Jiao, Chun Chun Wang, Huan Wu, Rong Gong, Fang Hui Lin, Jie Feng, Caihong Hu
This study was aimed at investigating whether dietary copper/zinc-loaded montmorillonite (Cu/Zn-Mt) could alleviate Escherichia coli LPS-induced intestinal injury through pro- and anti-inflammatory signaling pathways (TLRs, NLRs and TGF-β1) in weaned piglets. Eighteen 21-d-old pigs were randomly divided into three groups (control, LPS and LPS + Cu/Zn-Mt). After 21 d of feeding, pigs in the LPS group and LPS + Cu/Zn-Mt group received i.p. administration of LPS, whereas pigs in the control group received saline...
January 1, 2017: Innate Immunity
https://www.readbyqxmd.com/read/28955789/transcriptional-modulation-of-pattern-recognition-receptors-in-chronic-colitis-in-mice-is-accompanied-with-th1-and-th17-response
#20
Bin Zheng, Mary E Morgan, Hendrik J G van de Kant, Johan Garssen, Gert Folkerts, Aletta D Kraneveld
Pattern recognition receptors (PRRs) may contribute to inflammatory bowel diseases (IBD) development due to their microbial-sensing ability and the unique microenvironment in the inflamed gut. In this study, the PRR mRNA expression profile together with T cell-associated factors in the colon was examined using a chronic colitis mice model. 8-12 week old C57BL/6 mice were exposed to multiple dextran sodium sulfate (DSS) treatments interspersed with a rest period to mimic the course of chronic colitis. The clinical features and histological data were collected...
December 2017: Biochemistry and Biophysics Reports
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