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https://www.readbyqxmd.com/read/28101568/puerarin-inhibits-m2-polarization-and-metastasis-of-tumor-associated-macrophages-from-nsclc-xenograft-model-via-inactivating-mek-erk-1-2-pathway
#1
Honggang Kang, Jing Zhang, Baozhong Wang, Meirong Liu, Jun Zhao, Mengxiang Yang, Yingxue Li
Non-small cell lung carcinoma (NSCLC) metastasis is responsible for most of cancer-related mortality. The tumor associated macrophages (TAMs) are known to be crucial cells in lung cancer and are usually divided into two antagonistic types, M1 and M2. Puerarin has a wide spectrum of pharmacological properties. The present study explores puerarin on macrophage polarization and metastasis of NSCLC. The results demonstrated that puerarin inhibited tumor growth and tumor volumes in NSCLC xenograft model, increased M1 markers [CD197+, inducible nitric oxide synthase (iNOS)+, CD40+)] and reduced M2 markers (CD206+, Arg-1+ and CD163+)...
February 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28101208/effect-of-bovine-dialyzable-leukocyte-extract-on-induction-of-cell-differentiation-and-death-in-k562-human-chronic-myelogenous-leukemia-cells
#2
Crystel A Sierra-Rivera, Moisés A Franco-Molina, Edgar Mendoza-Gamboa, Pablo Zapata-Benavides, Jesús Santaolalla-Tapia, Erika E Coronado-Cerda, Reyes S Tamez-Guerra, Cristina Rodríguez-Padilla
Differentiation induction therapy is an attractive approach in leukemia treatment due to the fact that in blast crisis stage, leukemic cells lose their differentiation capacity. Therefore, it has been proposed as a therapeutic strategy to induce terminal differentiation of leukemic blast cells into a specific lineage, leading to prevention of high proliferation rates. The aim of the present study was to demonstrate the potential of cell differentiation and death induced by bovine dialyzable leukocyte extract (bDLE) in the K562 cell line...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28100085/heterogeneity-of-macrophages-in-canine-histiocytic-ulcerative-colitis
#3
Anna Nolte, Johannes Junginger, Berit Baum, Marion Hewicker-Trautwein
Histiocytic ulcerative colitis (HUC) is a chronic enteropathy which most notably occurs in Boxer dogs and French bulldogs. The inflamed mucosa is hallmarked by large, foamy, periodic acid-Schiff (PAS)-positive macrophages infiltrating the colonic mucosa. As little is known about their origin and phenotype, an immunohistochemical study was performed using different macrophage markers. Generally, canine colonic macrophages showed high expression of ionised calcium-binding adaptor molecule 1 and MHC class II. In canine HUC, macrophages revealed up-regulation of lysozyme and L1 Ag but decreased CD163 expression compared with controls, suggesting them to be pro-inflammatory cells, whereas the healthy colonic mucosa was characterised by an anti-inflammatory macrophage phenotype...
January 1, 2017: Innate Immunity
https://www.readbyqxmd.com/read/28097809/cancer-associated-fibroblasts-promote-m2-polarization-of-macrophages-in-pancreatic-ductal-adenocarcinoma
#4
Aibin Zhang, Yigang Qian, Zhou Ye, Haiyong Chen, Haiyang Xie, Lin Zhou, Yan Shen, Shusen Zheng
Pancreatic ductal adenocarcinoma (PDAC) is characterized by remarkable desmoplasia with infiltration of distinct cellular components. Cancer-associated fibroblasts (CAFs) has been shown to be among the most prominent cells and played a significant role in shaping the tumor microenvironment by interacting with other type of cells. Here, we aimed to investigate the effect of CAFs in modulating phenotype of tumor-associated macrophages (TAM). Under treatment of CAFs conditioned medium (CM) or direct co-culture with CAFs, monocytes exhibited enhanced expression of CD206 and CD163 compared with control group (P < 0...
January 18, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28093525/mafb-determines-human-macrophage-anti-inflammatory-polarization-relevance-for-the-pathogenic-mechanisms-operating-in-multicentric-carpotarsal-osteolysis
#5
Víctor D Cuevas, Laura Anta, Rafael Samaniego, Emmanuel Orta-Zavalza, Juan Vladimir de la Rosa, Geneviève Baujat, Ángeles Domínguez-Soto, Paloma Sánchez-Mateos, María M Escribese, Antonio Castrillo, Valérie Cormier-Daire, Miguel A Vega, Ángel L Corbí
Macrophage phenotypic and functional heterogeneity derives from tissue-specific transcriptional signatures shaped by the local microenvironment. Most studies addressing the molecular basis for macrophage heterogeneity have focused on murine cells, whereas the factors controlling the functional specialization of human macrophages are less known. M-CSF drives the generation of human monocyte-derived macrophages with a potent anti-inflammatory activity upon stimulation. We now report that knockdown of MAFB impairs the acquisition of the anti-inflammatory profile of human macrophages, identify the MAFB-dependent gene signature in human macrophages and illustrate the coexpression of MAFB and MAFB-target genes in CD163(+) tissue-resident and tumor-associated macrophages...
January 16, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28093272/a-method-for-obtaining-simian-immunodeficiency-virus-rna-sequences-from-laser-capture-microdissected-and-immune-captured-cd68-and-cd163-macrophages-from-frozen-tissue-sections-of-bone-marrow-and-brain
#6
Jaclyn Mallard, Emily Papazian, Caroline Soulas, David J Nolan, Marco Salemi, Kenneth C Williams
Laser capture microdissection (LCM) is used to extract cells or tissue regions for analysis of RNA, DNA or protein. Several methods of LCM are established for different applications, but a protocol for consistently obtaining lentiviral RNA from LCM captured immune cell populations is not described. Obtaining optimal viral RNA for analysis of viral genes from immune-captured cells using immunohistochemistry (IHC) and LCM is challenging. IHC protocols have long antibody incubation times that increase risk of RNA degradation...
January 13, 2017: Journal of Immunological Methods
https://www.readbyqxmd.com/read/28091516/osteopontin-regulates-macrophage-activation-and-osteoclast-formation-in-hypertensive-patients-with-vascular-calcification
#7
Qian Ge, Cheng-Chao Ruan, Yu Ma, Xiao-Feng Tang, Qi-Hong Wu, Ji-Guang Wang, Ding-Liang Zhu, Ping-Jin Gao
Vascular calcification (VC) is a highly regulated ectopic mineral deposition process involving immune cell infiltration in the vasculatures, which has been recognized to be promoted by hypertension. The matricellular glycoprotein osteopontin (OPN) is strongly induced in myeloid cells as a potential inflammatory mediator of vascular injury. This study aims to examine whether OPN is involved in the regulation of macrophage activation and osteoclast formation in hypertensive subjects with VC. We firstly found an increased proportion of CD11c+CD163- pro-inflammatory peripheral monocytes in hypertensive subjects with VC compared to those without VC by flow cytometric analysis...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28090670/an-endoplasmic-reticulum-protein-nogo-b-facilitates-alcoholic-liver-disease-through-regulation-of-kupffer-cell-polarization
#8
Jin-Kyu Park, Mingjie Shao, Moon Young Kim, Soon Koo Baik, Mee Yon Cho, Teruo Utsumi, Ayano Satoh, Xinsho Ouyang, Chuhan Chung, Yasuko Iwakiri
Background Nogo-B (Reticulon 4B) is an endoplasmic reticulum (ER) resident protein that regulates ER structure and function. Since ER stress is known to induce M2 macrophage polarization, we examined whether Nogo-B regulates M1/M2 polarization of Kupffer cells and alters the pathogenesis of alcoholic liver disease (ALD). Methods M1 and M2 phenotypes were assessed in relation to Nogo-B expression and disease severity in liver specimens from ALD patients (NCT01875211). Liver specimens from wild-type (WT) and Nogo-B knockout (KO) mice fed control or Lieber-DeCarli ethanol liquid diet (5% ethanol) for 6 weeks were analyzed for liver injury and steatosis...
January 16, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28090562/hepatitis-c-virus-induced-monocyte-differentiation-into-polarized-m2-macrophages-promotes-stellate-cell-activation-via%C3%A2-tgf-%C3%AE
#9
Banishree Saha, Karen Kodys, Gyongyi Szabo
BACKGROUND & AIMS: Monocyte and macrophage (MΦ) activation contributes to the pathogenesis of chronic hepatitis C virus (HCV) infection. Disease pathogenesis is regulated by both liver-resident MΦs and monocytes recruited as precursors of MΦs into the damaged liver. Monocytes differentiate into M1 (classic/proinflammatory) or M2 (alternative/anti-inflammatory) polarized MΦs in response to tissue microenvironment. We hypothesized that HCV-infected hepatoma cells (infected with Japanese fulminant hepatitis-1 [Huh7...
May 2016: Cellular and Molecular Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28087824/neuropathology-of-sudep-role-of-inflammation-blood-brain-barrier-impairment-and-hypoxia
#10
Zuzanna Michalak, Dima Obari, Matthew Ellis, Maria Thom, Sanjay M Sisodiya
OBJECTIVE: To seek a neuropathologic signature of sudden unexpected death in epilepsy (SUDEP) in a postmortem cohort by use of immunohistochemistry for specific markers of inflammation, gliosis, acute neuronal injury due to hypoxia, and blood-brain barrier (BBB) disruption, enabling the generation of hypotheses about potential mechanisms of death in SUDEP. METHODS: Using immunohistochemistry, we investigated the expression of 6 markers (CD163, human leukocyte antigen-antigen D related, glial fibrillary acid protein, hypoxia-inducible factor-1α [HIF-1α], immunoglobulin G, and albumin) in the hippocampus, amygdala, and medulla in 58 postmortem cases: 28 SUDEP (definite and probable), 12 epilepsy controls, and 18 nonepileptic sudden death controls...
January 13, 2017: Neurology
https://www.readbyqxmd.com/read/28081037/higher-cd163-levels-are-associated-with-insulin-resistance-in-hepatitis-c-virus-infected-and-hiv-infected-adults
#11
Michael Reid, Yifei Ma, Rebecca Scherzer, Jennifer C Price, Audrey L French, Michael W Plankey, Carl Grunfeld, Phyllis C Tien
OBJECTIVES: HIV/hepatitis C virus (HCV) coinfection is associated with insulin resistance, but the mechanism is unclear. We hypothesized that intestinal epithelial damage and the consequent monocyte/macrophage activation and inflammation explain this perturbation. DESIGN: Cross-sectional study of 519 adults (220 HIV+/HCV-; 64 HIV-/HCV+; 89 HIV+/HCV+; 146 HIV-/HCV-). METHODS: We used multivariable linear regression to evaluate associations of HIV and HCV with the homeostasis model assessment of insulin resistance (HOMA-IR) and if intestinal fatty (FA) acid binding protein (I-FABP, a marker of gut epithelial integrity), soluble CD14 (sCD14) and soluble CD163 (sCD163) (markers of monocyte/macrophage activation), and IL-6 (an inflammatory cytokine) mediated this association...
January 28, 2017: AIDS
https://www.readbyqxmd.com/read/28073370/expression-site-of-p2ry12-in-residential-microglial-cells-in-astrocytomas-correlates-with-m1-and-m2-marker-expression-and-tumor-grade
#12
Changbin Zhu, Johan M Kros, Marcel van der Weiden, PingPin Zheng, Caroline Cheng, Dana A M Mustafa
The role of resident microglial cells in the pathogenesis and progression of glial tumors is still obscure mainly due to a lack of specific markers. Recently P2RY12, a P2 purinergic receptor, was introduced as a specific marker for microglial cells under normal and pathologic conditions. Here we analyzed the expression of P2RY12 in astrocytomas of various malignancy grades in relation to markers for M1 and M2 macrophage activation profiles by using two web-based glioma datasets and confocal immunohistochemistry to 28 astrocytoma samples grades II-IV...
January 10, 2017: Acta Neuropathologica Communications
https://www.readbyqxmd.com/read/28070458/characterization-of-adipose-tissue-macrophages-and-adipose-derived-stem-cells-in-critical-wounds
#13
Bong-Sung Kim, Pathricia V Tilstam, Katrin Springenberg-Jung, Arne Hendrick Boecker, Corinna Schmitz, Daniel Heinrichs, Soo Seok Hwang, Jan Philipp Stromps, Bergita Ganse, Ruedger Kopp, Matthias Knobe, Juergen Bernhagen, Norbert Pallua, Richard Bucala
BACKGROUND: Subcutaneous adipose tissue is a rich source of adipose tissue macrophages and adipose-derived stem cells which both play a key role in wound repair. While macrophages can be divided into the classically-activated M1 and the alternatively-activated M2 phenotype, ASCs are characterized by the expression of specific stem cell markers. METHODS: In the present study, we have investigated the expression of common macrophage polarization and stem cell markers in acutely inflamed adipose tissue...
2017: PeerJ
https://www.readbyqxmd.com/read/28065450/the-effects-of-increased-heme-oxygenase-1-on-the-lymphoproliferative-response-in-dogs-with-visceral-leishmaniasis
#14
Breno Fernando Martins de Almeida, Kathlenn Liezbeth Oliveira Silva, Vanessa Marim Chiku, Aline Aparecida Correa Leal, Gabriela Lovizutto Venturin, Luis Gustavo Narciso, Maria Fernanda Cereijido Bersni Fink, Flavia de Rezende Eugênio, Paulo Sergio Patto Dos Santos, Paulo Cesar Ciarlini, Valéria Marçal Felix de Lima
Canine visceral leishmaniasis (CVL) is known to affect the cellular immunity of infected dogs, through impairing lymphoproliferation and microbicidal mechanisms. This study examined heme oxygenase-1 (HO-1) and its metabolites, oxidative stress and IL-10 levels in CVL and investigated correlations between these parameters. Additionally, the effects of HO-1 inhibition on the lymphoproliferative response and cytokine production in lymph node cells (LNCs) from infected dogs were evaluated. Forty-four dogs, 24 controls and 20 dogs with CVL were selected...
December 30, 2016: Immunobiology
https://www.readbyqxmd.com/read/28062012/characterization-of-the-interaction-of-african-swine-fever-virus-with-monocytes-and-derived-macrophage-subsets
#15
Giulia Franzoni, Simon P Graham, Silvia Dei Giudici, Piero Bonelli, Giovannantonio Pilo, Antonio G Anfossi, Marco Pittau, Paola S Nicolussi, Alberto Laddomada, Annalisa Oggiano
African swine fever (ASF) is a devastating disease for which there is no vaccine available. The ASF virus (ASFV) primarily infects cells of the myeloid lineage and this tropism is thought to be crucial for disease pathogenesis. A detailed in vitro characterization of the interactions of a virulent Sardinian isolate (22653/14) and a tissue culture adapted avirulent strain (BA71V) of ASFV with porcine monocytes, un-activated (moMΦ), classically (moM1) and alternatively (moM2) activated monocyte-derived macrophages was conducted in an attempt to better understand this relationship...
January 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28062010/splenic-cd163-macrophages-as-targets-of-porcine-reproductive-and-respiratory-virus-role-of-siglecs
#16
María Yuste, Teresa Fernández-Caballero, Cinta Prieto, Belén Álvarez, Javier Martínez-Lobo, Isabel Simarro, José María Castro, Fernando Alonso, Ángel Ezquerra, Javier Domínguez, Concepción Revilla
CD169 and CD163 have been involved in the process of PRRS virus attachment and infection in macrophages, although recent studies have challenged the requirement for CD169. In addition to CD169, macrophages express other siglecs, whose role in PRRS virus infection is so far unknown. Splenic CD163(+) macrophages express Siglec-3 and Siglec-5 but almost undetectable levels of CD169. Hence, we considered this cell population appropriate for analysing the role of these siglecs in the attachment and internalization of PRRS virus into macrophages...
January 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28059091/identification-of-distinct-subgroups-of-ebv-positive-post-transplant-diffuse-large-b-cell-lymphoma
#17
Julie Morscio, Julio Finalet Ferreiro, Sara Vander Borght, Emilie Bittoun, Olivier Gheysens, Daan Dierickx, Gregor Verhoef, Iwona Wlodarska, Thomas Tousseyn
Post-transplantation lymphoproliferative disorder is an aggressive complication of transplantation, most frequently of diffuse large B-cell lymphoma morphology and associated with Epstein-Barr virus (EBV) infection/reactivation. In this study the microenvironment of EBV(+) (n=23) and EBV(-) (n=9) post-transplant non-germinal center B-cell diffuse large B-cell lymphoma was characterized. Of EBV(+) cases somatic hypermutation analysis, gene expression profiling, and extensive phenotyping were performed. Our results demonstrated variable cytotoxic T-cell infiltration and significantly increased CD163(+) M2 macrophage infiltration in EBV(+) compared with EBV(-) post-transplant diffuse large B-cell lymphoma...
January 6, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28056337/marked-enteropathy-in-an-accelerated-macaque-model-of-aids
#18
Joshua D Croteau, Elizabeth L Engle, Suzanne E Queen, Erin N Shirk, M Christine Zink
Enteropathy in HIV infection is not eliminated with combination antiretroviral therapy and is possibly linked to microbial translocation. We used a rapidly progressing SIV/pigtailed macaque model of HIV to examine enteropathy and microbial translocation. Histologic evidence of intestinal disease was observed in only half of infected macaques during late-stage infection (LSI). Combination antiretroviral therapy initiated during acute infection prevented intestinal disease. In the ileum and colon, enteropathy was associated with increased caspase-3 staining, decreased CD3(+) T cells, and increased SIV-infected cells...
January 2, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28052009/cancer-associated-fibroblasts-promote-an-immunosuppressive-microenvironment-through-the-induction-and-accumulation-of-protumoral-macrophages
#19
Hideyuki Takahashi, Koichi Sakakura, Takeshi Kudo, Minoru Toyoda, Kyoichi Kaira, Tetsunari Oyama, Kazuaki Chikamatsu
Stromal cells in the tumor microenvironment (TME) closely interact with tumor cells and affect tumor cell behavior in diverse manners. We herein investigated the mechanisms by which cancer-associated fibroblasts (CAFs) affect the functional polarization of tumor-associated macrophages (TAMs) in oral squamous cell carcinoma (OSCC) in vitro and in human cancer samples. The expression of CD68, CD14, CD163, CD200R, CD206, HLA-G, CD80, and CD86 was higher in CD14-positive cells co-cultured with the culture supernatants of CAFs established from OSCC specimens (CAF-educated cells) than in control cells...
December 30, 2016: Oncotarget
https://www.readbyqxmd.com/read/28042333/nanosized-ucmsc-derived-extracellular-vesicles-but-not-conditioned-medium-exclusively-inhibit-the-inflammatory-response-of-stimulated-t-cells-implications-for-nanomedicine
#20
Marta Monguió-Tortajada, Santiago Roura, Carolina Gálvez-Montón, Josep Maria Pujal, Gemma Aran, Lucía Sanjurjo, Marcel la Franquesa, Maria-Rosa Sarrias, Antoni Bayes-Genis, Francesc E Borràs
Undesired immune responses have drastically hampered outcomes after allogeneic organ transplantation and cell therapy, and also lead to inflammatory diseases and autoimmunity. Umbilical cord mesenchymal stem cells (UCMSCs) have powerful regenerative and immunomodulatory potential, and their secreted extracellular vesicles (EVs) are envisaged as a promising natural source of nanoparticles to increase outcomes in organ transplantation and control inflammatory diseases. However, poor EV preparations containing highly-abundant soluble proteins may mask genuine vesicular-associated functions and provide misleading data...
2017: Theranostics
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