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https://www.readbyqxmd.com/read/29456737/distinctive-profiles-of-tumor-infiltrating-immune-cells-and-association-with-intensity-of-infiltration-in-colorectal-cancer
#1
Yugang Wu, Lei Yuan, Qicheng Lu, Haiyan Xu, Xiaozhou He
Tumor-infiltrating immune cells are heterogeneous and consist of characteristic compartments, including T helper (Th)1 and regulatory T (Treg) cells that exhibit distinctive biological functions. The present study investigated the profile of infiltrating immune cells from surgically removed tumor tissues from patients with colorectal cancer. The characteristic transcription factors of Th1 and Th2 cells, Treg cells, Th17 cells and T follicular helper (Tfh) cells were analyzed. The results demonstrated that a marked increased number of Treg cells presented in tumor infiltrates when compared with non-tumor adjacent tissues...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29456540/kallikrein-kinin-system-suppresses-type-i-interferon-responses-a-novel-pathway-of-interferon-regulation
#2
Alecia Seliga, Michael Hweemoon Lee, Nicole C Fernandes, Viviana Zuluaga-Ramirez, Marta Didukh, Yuri Persidsky, Raghava Potula, Stefania Gallucci, Uma Sriram
The Kallikrein-Kinin System (KKS), comprised of kallikreins (klks), bradykinins (BKs) angiotensin-converting enzyme (ACE), and many other molecules, regulates a number of physiological processes, including inflammation, coagulation, angiogenesis, and control of blood pressure. In this report, we show that KKS regulates Type I IFN responses, thought to be important in lupus pathogenesis. We used CpG (TLR9 ligand), R848 (TLR7 ligand), or recombinant IFN-α to induce interferon-stimulated genes (ISGs) and proteins, and observed that this response was markedly diminished by BKs, klk1 (tissue kallikrein), or captopril (an ACE inhibitor)...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29449068/chemokines-beyond-chemo-attraction-cxcl10-and-its-significant-role-in-cancer-and-autoimmunity
#3
Nathan Karin, Hila Razon
Chemokines are mostly known for their chemotactic properties, and less for their ability to direct the biological function of target cells, including T cells. The current review focuses on a key chemokine named CXCL10 and its role in directing the migratory propertied and biological function of CD4+ and CD8+ T cells in the context of cancer and inflammatory autoimmunity. CXCR3 is a chemokine receptor that is abundant on CD4+ T cells, CD8+ T cells and NK cells. It has three known ligands: CXCL9, CXCL10 and CXCL11...
February 12, 2018: Cytokine
https://www.readbyqxmd.com/read/29448936/chitinase-3-like-1-is-a-biomarker-of-acute-kidney-injury-and-mortality-in-paediatric-severe-malaria
#4
Andrea L Conroy, Michael T Hawkes, Robyn Elphinstone, Robert O Opoka, Sophie Namasopo, Christopher Miller, Chandy C John, Kevin C Kain
BACKGROUND: Chitinase-3-like 1 (CHI3L1) is a glycoprotein elevated in paediatric severe malaria, and an emerging urinary biomarker of acute kidney injury (AKI). Based on the hypothesis that elevated CHI3L1 levels in malaria are associated with disease severity, the relationship between plasma CHI3L1 levels, AKI and mortality was investigated in Ugandan children enrolled in a clinical trial evaluating inhaled nitric oxide (iNO) as an adjunctive therapy for severe malaria. METHODS: Plasma CHI3L1 levels were measured daily for 4 days in children admitted to hospital with severe malaria and at day 14 follow up...
February 15, 2018: Malaria Journal
https://www.readbyqxmd.com/read/29437871/gut-microbiota-modulate-t-cell-trafficking-into-human-colorectal-cancer
#5
Eleonora Cremonesi, Valeria Governa, Jesus Francisco Glaus Garzon, Valentina Mele, Francesca Amicarella, Manuele Giuseppe Muraro, Emanuele Trella, Virginie Galati-Fournier, Daniel Oertli, Silvio Raffael Däster, Raoul A Droeser, Benjamin Weixler, Martin Bolli, Raffaele Rosso, Ulrich Nitsche, Nina Khanna, Adrian Egli, Simone Keck, Julia Slotta-Huspenina, Luigi M Terracciano, Paul Zajac, Giulio Cesare Spagnoli, Serenella Eppenberger-Castori, Klaus-Peter Janssen, Lubor Borsig, Giandomenica Iezzi
OBJECTIVE: Tumour-infiltrating lymphocytes (TILs) favour survival in human colorectal cancer (CRC). Chemotactic factors underlying their recruitment remain undefined. We investigated chemokines attracting T cells into human CRCs, their cellular sources and microenvironmental triggers. DESIGN: Expression of genes encoding immune cell markers, chemokines and bacterial 16S ribosomal RNA (16SrRNA) was assessed by quantitative reverse transcription-PCR in fresh CRC samples and corresponding tumour-free tissues...
February 6, 2018: Gut
https://www.readbyqxmd.com/read/29434741/inhibition-of-c-x-c-motif-chemokine-10-reduces-graft-loss-mediated-by-memory-cd8-t-cells-in-a-rat-cardiac-re-transplant-model
#6
Jiacheng Xu, Teng Ma, Guorong Deng, Jiawei Zhuang, Cheng Li, Shaohu Wang, Chen Dai, Xiaobiao Zhou, Zhonggui Shan, Zhongquan Qi
The interaction of chemokine (C-X-C motif) ligand 10 (CXCL10) with its receptor (CXCR3) is a critical process in recruiting donor reactive T cells to a graft and alloantigen-specific memory T (Tm) cells exert a principal function in promoting graft dysfunction during accelerated cardiac rejection. However, whether CXCL10 chemokine exerts any effects on acute accelerated rejection mediated by CD8+ Tm cells in a re-transplant model has remained elusive. The present study established a cardiac transplant model by advanced microsurgery technology and improved organ storage...
February 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29434590/killed-whole-cell-oral-cholera-vaccine-induces-ccl20-secretion-by-human-intestinal-epithelial-cells-in-the-presence-of-the-short-chain-fatty-acid-butyrate
#7
Ju-Ri Sim, Seok-Seong Kang, Daesang Lee, Cheol-Heui Yun, Seung Hyun Han
Short-chain fatty acids (SCFAs), such as acetate, butyrate, and propionate, modulate immune responses in the gut. However, the effect of SCFAs on mucosal vaccine-induced immune cell migration is poorly understood. Here, we investigated whether SCFAs modulate chemokine expression induced by the killed whole-cell oral cholera vaccine, Shanchol™, in human intestinal epithelial cells. Shanchol™ induced expression of CCL2, CCL5, CCL20, and CXCL10 at the mRNA level, but not at the protein level. Interestingly, CCL20 secretion was substantially increased by co-stimulation with Shanchol™ and butyrate, while neither acetate nor propionate showed such effect...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29432913/effects-of-fluconazole-on-the-clinical-outcome-and-immune-response-in-fungal-co-infected-tuberculosis-patients
#8
Xiaojuan Ren, Wei Liu, Yi Liu
With overuse of the broad-spectrum antibiotics, the pulmonary fungal infection increasingly becomes the most common complication associated with senile pulmonary tuberculosis (TB) and attracts intensive attentions from clinicians. Here we presented the retrospective analysis of impact of fluconazole treatment on the clinical outcome and immune response in fungal co-infected tuberculosis patients. A randomized, double-blind, placebo-controlled trial of fluconazole (100 mg per day for consecutive weeks) in fungal-positive senile tuberculosis patients was conducted in our hospital...
February 9, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29421524/nontypeable-haemophilus-influenzae-dna-stimulates-type-i-interferon-expression-via-sting-signaling-pathway
#9
Chang Lu, Xuemei Zhang, Chenyu Ma, Wenchun Xu, Lingling Gan, Jin Cui, Yibing Yin, Hong Wang
Nontypeable Haemophilus influenzae (NTHI) is one of the leading causes of acute exacerbations of COPD (AECOPD). Although the immunoregulation function of NTHI outer member protein and endotoxin were confirmed, the role of NTHI DNA in activating immune responses remains to be elucidated. In this study, we found expression of IFN-β and IFN stimulated gene CXCL10 in host cells was forcefully elevated after treating with NTHI and NTHI DNA. Interestingly, we tested increased level of STING in NTHI infected mice lung...
February 5, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29420590/immunological-profile-in-cerebrospinal-fluid-of-patients-with-multiple-sclerosis-after-treatment-switch-to-rituximab-and-compared-with-healthy-controls
#10
Pierre de Flon, Lars Söderström, Katarina Laurell, Ann Dring, Peter Sundström, Martin Gunnarsson, Anders Svenningsson
OBJECTIVE: To investigate changes in the cerebrospinal fluid (CSF) immunological profile after treatment switch from first-line injectables to rituximab in patients with relapsing-remitting MS (RRMS), and to compare the profile in MS patients with healthy controls (HC). METHOD: Cerebrospinal fluid from 70 patients with clinically stable RRMS and 55 HC was analysed by a multiplex electrochemiluminescence method for a broad panel of cytokines and immunoactive substances before, and over a two-year period after, treatment switch to rituximab...
2018: PloS One
https://www.readbyqxmd.com/read/29416784/differential-expression-profile-of-cxcr3-splicing-variants-is-associated-with-thyroid-neoplasia-potential-role-in-papillary-thyroid-carcinoma-oncogenesis
#11
Soledad Urra, Martin C Fischer, José R Martínez, Loreto Véliz, Paulina Orellana, Antonieta Solar, Karen Bohmwald, Alexis Kalergis, Claudia Riedel, Alejandro H Corvalán, Juan C Roa, Rodrigo Fuentealba, C Joaquin Cáceres, Marcelo López-Lastra, Augusto León, Nicolás Droppelmann, Hernán E González
Papillary thyroid cancer (PTC) is the most prevalent endocrine neoplasia. The increased incidence of PTC in patients with thyroiditis and the frequent immune infiltrate found in PTC suggest that inflammation might be a risk factor for PTC development. The CXCR3-ligand system is involved in thyroid inflammation and CXCR3 has been found upregulated in many tumors, suggesting its pro-tumorigenic role under the inflammatory microenvironment. CXCR3 ligands (CXCL4, CXCL9, CXCL10 and CXCL11) trigger antagonistic responses partly due to the presence of two splice variants, CXCR3A and CXCR3B...
January 5, 2018: Oncotarget
https://www.readbyqxmd.com/read/29415190/cytokine-mediated-systemic-adverse-drug-reactions-in-a-drug-drug-interaction-study-of-dolutegravir-with-once-weekly-isoniazid-and-rifapentine
#12
Kristina M Brooks, Jomy M George, Alice K Pau, Adam Rupert, Carolina Mehaffy, Prithwiraj De, Karen M Dobos, Anela Kellogg, Mary McLaughlin, Maryellen McManus, Raul M Alfaro, Colleen Hadigan, Joseph A Kovacs, Parag Kumar
Background: Once-weekly isoniazid and rifapentine for 3 months is a treatment option in persons with human immunodeficiency virus and latent tuberculosis infection. This study aimed to examine pharmacokinetic drug-drug interactions between this regimen and dolutegravir, a first-line antiretroviral medication. Methods: This was a single-center, open-label, fixed-sequence, drug-drug interaction study in healthy volunteers. Subjects received oral dolutegravir 50 mg once-daily alone (Days 1-4) and concomitantly with once-weekly isoniazid 900 mg, rifapentine 900 mg, and pyridoxine 50 mg (Days 5-19)...
February 3, 2018: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29414279/mogamulizumab-anti-ccr4-in-htlv-1-associated-myelopathy
#13
Tomoo Sato, Ariella L G Coler-Reilly, Naoko Yagishita, Natsumi Araya, Eisuke Inoue, Rie Furuta, Toshiki Watanabe, Kaoru Uchimaru, Masao Matsuoka, Naoki Matsumoto, Yasuhiro Hasegawa, Yoshihisa Yamano
BACKGROUND: Human T-lymphotropic virus type 1 (HTLV-1) causes the debilitating neuroinflammatory disease HTLV-1-associated myelopathy-tropical spastic paraparesis (HAM-TSP) as well as adult T-cell leukemia-lymphoma (ATLL). In patients with HAM-TSP, HTLV-1 infects mainly CCR4+ T cells and induces functional changes, ultimately causing chronic spinal cord inflammation. We evaluated mogamulizumab, a humanized anti-CCR4 monoclonal antibody that targets infected cells, in patients with HAM-TSP...
February 8, 2018: New England Journal of Medicine
https://www.readbyqxmd.com/read/29413515/baseline-serum-cxcl10-and-il-12-levels-may-predict-severe-asthmatics-responsiveness-to-omalizumab
#14
Maho Suzukawa, Hisako Matsumoto, Nobuharu Ohshima, Hiroyuki Tashimo, Isao Asari, Tomoko Tajiri, Akio Niimi, Hiroyuki Nagase, Hirotoshi Matsui, Nobuyuki Kobayashi, Shunsuke Shoji, Ken Ohta
BACKGROUND: Omalizumab, a humanized anti-IgE monoclonal antibody, is the first molecularly targeted drug for severe asthmatics. However, responses to omalizumab vary widely among patients. OBJECTIVES: This study aimed to assess the potential of baseline serum cytokine levels as predictors of responsiveness to omalizumab. METHODS: Thirty-one patients with severe, persistent asthma were enrolled in this study and administered omalizumab for at least 1 year...
January 2018: Respiratory Medicine
https://www.readbyqxmd.com/read/29411555/innate-immune-response-to-viral-infections-in-primary-bronchial-epithelial-cells-is-modified-by-the-atopic-status-of-asthmatic-patients
#15
Sylwia Moskwa, Wojciech Piotrowski, Jerzy Marczak, Małgorzata Pawełczyk, Anna Lewandowska-Polak, Marzanna Jarzębska, Małgorzata Brauncajs, Anna Głobińska, Paweł Górski, Nikolaos G Papadopoulos, Michael R Edwards, Sebastian L Johnston, Marek L Kowalski
PURPOSE: In order to gain an insight into determinants of reported variability in immune responses to respiratory viruses in human bronchial epithelial cells (HBECs) from asthmatics, the responses of HBEC to viral infections were evaluated in HBECs from phenotypically heterogeneous groups of asthmatics and in healthy controls. METHODS: HBECs were obtained during bronchoscopy from 10 patients with asthma (6 atopic and 4 non-atopic) and from healthy controls (n=9) and grown as undifferentiated cultures...
March 2018: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/29403489/mycobacterial-phenolic-glycolipids-selectively-disable-trif-dependent-tlr4-signaling-in-macrophages
#16
Reid Oldenburg, Veronique Mayau, Jacques Prandi, Ainhoa Arbues, Catherine Astarie-Dequeker, Christophe Guilhot, Catherine Werts, Nathalie Winter, Caroline Demangel
Phenolic glycolipids (PGLs) are cell wall components of a subset of pathogenic mycobacteria, with immunomodulatory properties. Here, we show that in addition, PGLs exert antibactericidal activity by limiting the production of nitric oxide synthase (iNOS) in mycobacteria-infected macrophages. PGL-mediated downregulation of iNOS was complement receptor 3-dependent and comparably induced by bacterial and purified PGLs. Using Mycobacterium leprae PGL-1 as a model, we found that PGLs dampen the toll-like receptor (TLR)4 signaling pathway, with macrophage exposure to PGLs leading to significant reduction in TIR-domain-containing adapter-inducing interferon-β (TRIF) protein level...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29399410/poly-i-c-primes-primary-human-glioblastoma-cells-for-an-immune-response-invigorated-by-pd-l1-blockade
#17
Jorrit De Waele, Elly Marcq, Jonas Rm Van Audenaerde, Jinthe Van Loenhout, Christophe Deben, Karen Zwaenepoel, Erik Van de Kelft, David Van der Planken, Tomas Menovsky, Johan Mj Van den Bergh, Yannick Willemen, Patrick Pauwels, Zwi N Berneman, Filip Lardon, Marc Peeters, An Wouters, Evelien Lj Smits
Prognosis of glioblastoma remains dismal, underscoring the need for novel therapies. Immunotherapy is generating promising results, but requires combination strategies to unlock its full potential. We investigated the immunomodulatory capacities of poly(I:C) on primary human glioblastoma cells and its combinatorial potential with programmed death ligand (PD-L) blockade. In our experiments, poly(I:C) stimulated expression of both PD-L1 and PD-L2 on glioblastoma cells, and a pro-inflammatory secretome, including type I interferons (IFN) and chemokines CXCL9, CXCL10, CCL4 and CCL5...
2018: Oncoimmunology
https://www.readbyqxmd.com/read/29399390/ccl3-augments-tumor-rejection-and-enhances-cd8-t-cell-infiltration-through-nk-and-cd103-dendritic-cell-recruitment-via-ifn%C3%AE
#18
Frederick Allen, Iuliana D Bobanga, Peter Rauhe, Deborah Barkauskas, Nathan Teich, Caryn Tong, Jay Myers, Alex Y Huang
Inflammatory chemokines are critical contributors in attracting relevant immune cells to the tumor microenvironment and driving cellular interactions and molecular signaling cascades that dictate the ultimate outcome of host anti-tumor immune response. Therefore, rational application of chemokines in a spatial-temporal dependent manner may constitute an attractive adjuvant in immunotherapeutic approaches against cancer. Existing data suggest that the macrophage inflammatory protein (MIP)-1 family and related proteins, consisting of CCL3 (MIP-1α), CCL4 (MIP-1β), and CCL5 (RANTES), can be major determinant of immune cellular infiltration in certain tumors through their direct recruitment of antigen presenting cells, including dendritic cells (DCs) to the tumor site...
2018: Oncoimmunology
https://www.readbyqxmd.com/read/29397672/depression-and-mania-induce-pro-inflammatory-activation-of-macrophages-following-application-of-serum-from-individuals-with-bipolar-disorder
#19
Pamela Ferrari, Mariana Migliorini Parisi, Rafael Colombo, Matheus Becker, Gabriel Fries, Bruna Maria Ascoli, Luiza Paul Géa, Márcia Kauer-Sant Anna, Flávio Kapczinski, Fábio Klamt, Fátima T C R Guma, Adriane Ribeiro Rosa, Florencia M Barbé-Tuana
Objective: Evidence has suggested that immune imbalance is involved with bipolar disorder (BD); however, its precise mechanism is poorly understood. This study investigated whether biochemical changes in the serum from BD patients could modulate the phenotype of cultured macrophages. Methods: Eighteen subjects with BD and five healthy individuals were included in this study. The human monocyte cell line U-937 was activated with phorbol 12-myristate 13-acetate (PMA) and polarization was induced with RPMI-1640 media supplemented with 10% serum from each patient for 24 hours...
February 28, 2018: Clinical Psychopharmacology and Neuroscience: the Official Scientific Journal of the Korean College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29391474/erythropoietin-signaling-increases-choroidal-macrophages-and-cytokine-expression-and-exacerbates-choroidal-neovascularization
#20
Colin A Bretz, Vladimir Divoky, Josef Prchal, Eric Kunz, Aaron B Simmons, Haibo Wang, Mary Elizabeth Hartnett
Erythropoietin (EPO) is recognized for neuroprotective and angiogenic effects and has been associated with aging and neovascular age-related macular degeneration (AMD). We hypothesized that systemic EPO facilitates the development of choroidal neovascularization (CNV). Wild type mice expressed murine EPOR (mWtEPOR) in RPE/choroids at baseline and had significantly increased serum EPO after laser treatment. To test the role of EPO signaling, we used human EPOR knock-in mice with the mWtEPOR gene replaced by either the human EPOR gene (hWtEPOR) or a mutated human EPOR gene (hMtEPOR) in a laser-induced choroidal neovascularization (LCNV) model...
February 1, 2018: Scientific Reports
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