keyword
MENU ▼
Read by QxMD icon Read
search

TLR9

keyword
https://www.readbyqxmd.com/read/28931759/combination-immunotherapy-with-tlr-agonists-and-checkpoint-inhibitors-suppresses-head-and-neck-cancer
#1
Fumi Sato-Kaneko, Shiyin Yao, Alast Ahmadi, Shannon S Zhang, Tadashi Hosoya, Megan M Kaneda, Judith A Varner, Minya Pu, Karen S Messer, Cristiana Guiducci, Robert L Coffman, Kazutaka Kitaura, Takaji Matsutani, Ryuji Suzuki, Dennis A Carson, Tomoko Hayashi, Ezra Ew Cohen
Checkpoint inhibitors have demonstrated efficacy in patients with recurrent or metastatic head and neck squamous cell carcinoma (HNSCC). However, the majority of patients do not benefit from these agents. To improve the efficacy of checkpoint inhibitors, intratumoral (i.t.) injection with innate immune activators, TLR7 and TLR9 agonists, were tested along with programmed death-1 receptor (PD-1) blockade. The combination therapy suppressed tumor growth at the primary injected and distant sites in human papillomavirus-negative (HPV-negative) SCC7 and MOC1, and HPV-positive MEER syngeneic mouse models...
September 21, 2017: JCI Insight
https://www.readbyqxmd.com/read/28929859/endotracheal-tube-induced-sore-throat-pain-and-inflammation-is-coupled-to-the-release-of-mitochondrial-dna
#2
Carlos A Puyo, Daniela Peruzzi, Alexander Earhart, Evan Roller, Menelaos Karanikolas, Marin H Kollef, Alexander S Krupnick, Daniel Kreisel, Mohsen Ibrahim, Andrew E Gelman
In the absence of infection, the pathophysiology of endotracheal tube-induced sore throat pain is unclear. Activated neutrophils release elastase, reactive oxygen species, and inflammatory cytokines known to contribute to neuropathic pain. Sterile tissue injury can cause the release of damage-associated molecular patterns such as mitochondrial DNA that promote neutrophil activation. We hypothesized that endotracheal tube-induced sore throat pain is linked to mitochondrial DNA-mediated neutrophil inflammation...
January 2017: Molecular Pain
https://www.readbyqxmd.com/read/28928425/double-deficiency-of-trex2-and-dnase1l2-nucleases-leads-to-accumulation-of-dna-in-lingual-cornifying-keratinocytes-without-activating-inflammatory-responses
#3
Joan Manils, Heinz Fischer, Joan Climent, Eduard Casas, Celia García-Martínez, Jordi Bas, Supawadee Sukseree, Tanya Vavouri, Francisco Ciruela, Josep Maria de Anta, Erwin Tschachler, Leopold Eckhart, Concepció Soler
The cornification of keratinocytes on the surface of skin and oral epithelia is associated with the degradation of nuclear DNA. The endonuclease DNase1L2 and the exonuclease Trex2 are expressed specifically in cornifying keratinocytes. Deletion of DNase1L2 causes retention of nuclear DNA in the tongue epithelium but not in the skin. Here we report that lack of Trex2 results in the accumulation of DNA fragments in the cytoplasm of cornifying lingual keratinocytes and co-deletion of DNase1L2 and Trex2 causes massive accumulation of DNA fragments throughout the cornified layers of the tongue epithelium...
September 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28928016/cxcl14-acts-as-a-specific-carrier-of-cpg-dna-into-dendritic-cells-and-activates-toll-like-receptor-9-mediated-adaptive-immunity
#4
Kosuke Tanegashima, Rena Takahashi, Hideko Nuriya, Rina Iwase, Naoto Naruse, Kohei Tsuji, Akira Shigenaga, Akira Otaka, Takahiko Hara
CXCL14 is a primordial chemokine that plays multiple roles in tumor suppression, autoimmune arthritis, and obesity-associated insulin resistance. However, the underlying molecular mechanisms are unclear. Here, we show that CXCL14 transports various types of CpG oligodeoxynucleotide (ODN) into the endosomes and lysosomes of bone marrow-derived dendritic cells (DCs), thereby activating Toll-like receptor 9 (TLR9). A combination of CpG ODN (ODN2395) plus CXCL14 induced robust production of IL-12 p40 by wild-type, but not Tlr9-knockout, DCs...
September 14, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28921509/baff-augments-iga2-and-il-10-production-by-tlr7-8-stimulated-total-peripheral-blood-b-cells
#5
Gerco den Hartog, Thijs L J van Osch, Martijn Vos, Ben Meijer, Huub F J Savelkoul, R J Joost van Neerven, Sylvia Brugman
Class-switching of B cells to IgA can be induced via both T cell-dependent and T cell-independent mechanisms. IgA is most predominantly produced mucosally and is important for combating infections and allergies. In contrast to mice, humans have two forms of IgA; IgA1 and IgA2 with diverse tissue distribution. In early life, IgA levels might be sub-optimal especially during the fall season when bacterial and viral infections are more common. Therefore, we investigated using human B cells whether T cell-independent factors -promoting cell survival, class switching and immunoglobulin secretion- BAFF, APRIL, IL-10 and retinoic acid can boost IgA production in the context of viral or bacterial infection...
September 17, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28918025/effect-of-calcium-carbonate-encapsulation-on-the-activity-of-orally-administered-cpg-oligonucleotides
#6
Neslihan Kayraklioglu, Julia Scheiermann, W Gregory Alvord, Dennis M Klinman
Synthetic oligodeoxynucleotides containing unmethylated CpG motifs (CpG ODNs) stimulate immune cells via Toll-like receptor 9 (TLR9). Because oligodeoxynucleotides (ODNs) are susceptible to gastric degradation, clinical trials designed to evaluate their therapeutic utility have relied solely on parenteral routes of administration. A strategy to improve the activity of orally delivered ODNs by reducing their susceptibility to gastrointestinal (GI) digestion via encapsulation in calcium carbonate nanoparticles (ODNcaps) was recently described...
September 15, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28917488/gene-expression-regulation-of-the-tlr9-and-myd88-dependent-pathways-in-rock-bream-against-rock-bream-iridovirus-rbiv-infection
#7
Myung-Hwa Jung, Sung-Ju Jung
Rock bream iridovirus (RBIV), which is a member of the Megalocytivirus genus, causes severe mass mortalities in rock bream in Korea. To date, the innate immune defense mechanisms of rock bream against RBIV is unclear. In this study, we assessed the expression levels of genes related to TLR9 and MyD88-dependent pathways in RBIV-infected rock bream in high, low or no mortality conditions. In the high mortality group (100% mortality at 15 days post infection (dpi)), high levels of TLR9 and MyD88 expressions (6...
September 13, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28912808/association-of-polymorphisms-in-toll-like-receptors-4-and-9-with-autoimmune-thyroid-disease-in-korean-pediatric-patients
#8
Won Kyoung Cho, Jung-Pil Jang, Eun-Jeong Choi, Moonbae Ahn, Shin Hee Kim, Kyoung Soon Cho, So Hyun Park, In Cheol Baek, Min Ho Jung, Tai-Gyu Kim, Byung-Kyu Suh
BACKGROUND: Toll-like receptors (TLRs) have been suggested to be associated with the development of AITD. METHODS: Fifteen single-nucleotide polymorphisms in 7 TLR genes were analyzed in 104 Korean children (girls = 86, boys = 18) with AITD (Hashimoto disease (HD) = 44, Graves' disease (GD) = 60, thyroid-associated ophthalmopathy (TAO) = 29, and non-TAO = 31) with 183 controls. RESULTS: GD showed higher frequencies of the TLR4 rs1927911 C allele than control...
2017: International Journal of Endocrinology
https://www.readbyqxmd.com/read/28906208/pattern-recognition-receptors-signaling-pathways-and-dysregulation-in-canine-chronic-enteropathies-brief-review
#9
Romy M Heilmann, Karin Allenspach
Pattern-recognition receptors (PRRs) are expressed by innate immune cells and recognize pathogen-associated molecular patterns (PAMPs) as well as endogenous damage-associated molecular pattern (DAMP) molecules. With a large potential for synergism or convergence between their signaling pathways, PRRs orchestrate a complex interplay of cellular mediators and transcription factors, and thus play a central role in homeostasis and host defense. Aberrant activation of PRR signaling, mutations of the receptors and/or their downstream signaling molecules, and/or DAMP/PAMP complex-mediated receptor signaling can potentially lead to chronic auto-inflammatory diseases or development of cancer...
September 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28894754/natural-modulators-of-endosomal-toll-like-receptor-mediated-psoriatic-skin-inflammation
#10
REVIEW
Chao-Yang Lai, Yu-Wen Su, Kuo-I Lin, Li-Chung Hsu, Tsung-Hsien Chuang
Psoriasis is a chronic inflammatory autoimmune disease that can be initiated by excessive activation of endosomal toll-like receptors (TLRs), particularly TLR7, TLR8, and TLR9. Therefore, inhibitors of endosomal TLR activation are being investigated for their ability to treat this disease. The currently approved biological drugs adalimumab, etanercept, infliximab, ustekinumab, ixekizumab, and secukizumab are antibodies against effector cytokines that participate in the initiation and development of psoriasis...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28894350/short-term-regulation-of-fc%C3%AE-r-mediated-phagocytosis-by-tlrs-in-macrophages-participation-of-5-lipoxygenase-products
#11
Carla da S Pinheiro, Ana Paula T Monteiro, Fabiano F Dutra, Marcelo T Bozza, Marc Peters-Golden, Claudia F Benjamim, Claudio Canetti
TLRs recognize a broad spectrum of microorganism molecules, triggering a variety of cellular responses. Among them, phagocytosis is a critical process for host defense. Leukotrienes (LTs), lipid mediators produced from 5-lipoxygenase (5-LO) enzyme, increase FcγR-mediated phagocytosis. Here, we evaluated the participation of TLR2, TLR3, TLR4, and TLR9 in FcγR-mediated phagocytosis and whether this process is modulated by LTs. Rat alveolar macrophages (AMs), murine bone marrow-derived macrophages (BMDMs), and peritoneal macrophages (PMs) treated with TLR2, TLR3, and TLR4 agonists, but not TLR9, enhanced IgG-opsonized sheep red blood cell (IgG-sRBC) phagocytosis...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28893372/dual-effects-of-a-cpg-dnazyme-targeting-mutant-egfr-transcripts-in-lung-cancer-cells-tlr9-activation-and-egfr-downregulation
#12
Dahye Jang, Yu Mi Baek, Hanna Park, Yeo Eun Hwang, Dong-Eun Kim
Non-small-cell lung cancer (NSCLC) is commonly caused by a mutation in the epidermal growth factor receptor (EGFR) and subsequent aberrant EGFR signaling with uncontrolled kinase activity. A deletion mutation in EGFR exon 19 is frequently observed in EGFR gene mutations. We designed a DNAzyme to suppress the expression of mutant EGFR by cleaving the mutant EGFR mRNA. The DNAzyme (named Ex19del Dz) specifically cleaved target RNA and decreased cancer cell viability when transfected into gefitinib-resistant lung cancer cells harboring EGFR exon 19 deletions...
September 12, 2017: BMB Reports
https://www.readbyqxmd.com/read/28890720/porcine-b-cell-subset-responses-to-toll-like-receptor-ligands
#13
Roman Othmar Braun, Sylvie Python, Artur Summerfield
Toll-like receptors (TLR) triggering of B cells are known to promote B cell expansion, differentiation of B cells into antibody-producing and memory cells, but the TLR responses of porcine B cells is poorly characterized. Therefore, this study investigated the response pattern of porcine B cell subsets to a large collection of TLR ligands and demonstrates that the TLR2 ligand Pam3Cys-SK4 and the TLR7/8 ligands gardiquimod and resiquimod are particularly efficient at inducing proliferation, CD25 and CCR7. This activation was also determined in B-cell subpopulations including a CD21(+)IgM(+) subset, an IgG(+) subset and two putative B1-like subsets, defined as CD21(-)IgM(high)CD11R1(+)CD11c(+)CD14(+) and CD21(-)IgM(high) CD11R1(-)CD11c(+)CD14(-) B cells...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28890293/epidermal-barrier-reaction-to-an-in-vitro-psoriatic-microenvironment
#14
Elena Donetti, Laura Cornaghi, Francesca Arnaboldi, Federica Ricceri, Leonardo Pescitelli, Martina Maiocchi, Francesco Carriero, Franz Baruffaldi Preis, Francesca Prignano
Keratinocytes (KCs) and Langerhans cells (LCs) contribute to create the epidermal barrier. To form a functional epidermis, KCs express filaggrin and Toll-like Receptors (TLRs). LCs are the first line of epidermal defence and can be activated by interleukin (IL)-17 and Tumor Necrosis Factor (TNF)-alpha. In psoriasis, an alteration of TLR expression, a defective expression of filaggrin, and LC activation occur. In organotypic cultures of human skin we investigated the interplay between IL-17 and TNF-alpha on i) expression of filaggrin, TLR2, 7 and 9, and Nuclear Factor (NF)-kB localization by immunofluorescence and ii) LC ultrastructural features by transmission electron microscopy...
September 7, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28889202/regulation-of-sterile-%C3%AE-and-armadillo-motif-sarm-containing-protein-expression-in-pam2csk4-and-pam3csk4-activated-mouse-macrophage-cell-line-raw264-7-requires-tlr9
#15
Matsayapan Pudla, Panthong Kulsantiwong, Chanya Srisaowakarn, Pongsak Utaisincharoen
INTRODUCTION: We aimed to investigate the involvement of surface TLRs and endosomal TLRs in the regulation of SARM expression by TLR2 ligands (Pam2CSK4 and Pam3CSK4). MATERIALS AND METHODS: Mouse macrophage cell line (RAW264.7) was treated with either Pam2CSK4 or Pam3CSK4 (TLR2 ligands) at a concentration of 100 ng/ml. At indicated time points, the treated cells were lysed. The gene and protein expression of SARM were determined by RT-PCR and immunoblotting, respectively...
September 9, 2017: Inflammation Research: Official Journal of the European Histamine Research Society ... [et Al.]
https://www.readbyqxmd.com/read/28889122/galectin-9-produced-by-intestinal-epithelial-cells-enhances-aldehyde-dehydrogenase-activity-in-dendritic-cells-in-a-pi3k-and-p38-dependent-manner
#16
Sander de Kivit, Atanaska I Kostadinova, JoAnn Kerperien, Veronica Ayechu Muruzabal, Mary E Morgan, Leon M J Knippels, Aletta D Kraneveld, Johan Garssen, Linette E M Willemsen
Intestinal epithelial cells (IEC) drive regulatory T cell (Treg) responses by promoting the differentiation of aldehyde dehydrogenase (ALDH)-expressing CD103+ dendritic cells (DC). Apical stimulation of TLR9 by CpG DNA on IEC supports galectin-9 expression by IEC, which is promoted by short-chain galacto-oligosaccharides and long-chain fructo-oligosaccharides (GF). While galectin-9 can induce the maturation of monocyte-derived DC (moDC), the contribution of galectin-9 on the induction of ALDH activity in DC is not known...
September 9, 2017: Journal of Innate Immunity
https://www.readbyqxmd.com/read/28888664/regulatory-t-cells-and-tlr9-activation-shape-antibody-formation-to-a-secreted-transgene-product-in-aav-muscle-gene-transfer
#17
Roland W Herzog, Mario Cooper, George Q Perrin, Moanaro Biswas, Ashley T Martino, Laurence Morel, Cox Terhorst, Brad E Hoffman
Adeno-associated viral (AAV) gene delivery to skeletal muscle is being explored for systemic delivery of therapeutic proteins. To better understand the signals that govern antibody formation against secreted transgene products in this approach, we administered an intramuscular dose of AAV1 vector expressing human coagulation factor IX (hFIX), which does not cause antibody formation against hFIX in C57BL/6 mice. Interestingly, co-administration of a TLR9 agonist (CpG-deoxyoligonucleotide, ODN) but not of lipopolysaccharide, caused a transient anti-hFIX response...
August 1, 2017: Cellular Immunology
https://www.readbyqxmd.com/read/28886908/dna-sensing-across-the-tree-of-life
#18
REVIEW
Stefania Gallucci, Massimo E Maffei
From plants to mammals, pattern recognition receptors (PRRs) specifically recognize DNA, as a potential marker of either infection or damage. These receptors play critical roles in inflammation, immunity, and pathogen resistance. Importantly, given the ubiquity of DNA, its sensing must be tightly regulated. DNA localization plays a key role in recognition, as highlighted by Toll-like receptor 9 (TLR9) in the endosomal compartment and cyclic GMP-AMP synthase (cGAS) and absent in melanoma 2 (AIM2) in the cytoplasm...
September 5, 2017: Trends in Immunology
https://www.readbyqxmd.com/read/28886076/lower-frequency-of-tlr9-variant-associated-with-protection-from-breast-cancer-among-african-americans
#19
Madison R Chandler, Kimberly S Keene, Johanna M Tuomela, Andres Forero-Torres, Renee Desmond, Katri S Vuopala, Kevin W Harris, Nancy D Merner, Katri S Selander
INTRODUCTION: Toll-like receptor 9 (TLR9) is an innate immune system DNA-receptor that regulates tumor invasion and immunity in vitro. Low tumor TLR9 expression has been associated with poor survival in Caucasian patients with triple negative breast cancer (TNBC). African American (AA) patients with TNBC have worse prognosis than Caucasians but whether this is due to differences in tumor biology remains controversial. We studied the prognostic significance of tumor Toll like receptor-9 (TLR9) protein expression among African American (AA) triple negative breast cancer (TNBC) patients...
2017: PloS One
https://www.readbyqxmd.com/read/28886017/b-cell-phenotype-and-igd-cd27-memory-b-cells-are-affected-by-tnf-inhibitors-and-tocilizumab-treatment-in-rheumatoid-arthritis
#20
Rita A Moura, Cláudia Quaresma, Ana R Vieira, Maria J Gonçalves, Joaquim Polido-Pereira, Vasco C Romão, Nádia Martins, Helena Canhão, João E Fonseca
BACKGROUND: The use of TNF-inhibitors and/or the IL-6 receptor antagonist, tocilizumab, in rheumatoid arthritis (RA) have pleiotropic effects that also involve circulating B-cells. The main goal of this study was to assess the effect of TNF-inhibitors and tocilizumab on B-cell phenotype and gene expression in RA. METHODS: Blood samples were collected from untreated early RA (ERA) patients, established RA patients under methotrexate treatment, established RA patients before and after treatment with TNF-inhibitors and tocilizumab, and healthy donors...
2017: PloS One
keyword
keyword
91301
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"