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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/28097809/cancer-associated-fibroblasts-promote-m2-polarization-of-macrophages-in-pancreatic-ductal-adenocarcinoma
#2
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/28097233/ectonucleotidase-cd39-driven-control-of-postinfarction-myocardial-repair-and-rupture
#3
Nadia R Sutton, Takanori Hayasaki, Matthew C Hyman, Anuli C Anyanwu, Hui Liao, Danica Petrovic-Djergovic, Linda Badri, Amy E Baek, Natalie Walker, Keigo Fukase, Yogendra Kanthi, Scott H Visovatti, Ellen L Horste, Jessica J Ray, Sascha N Goonewardena, David J Pinsky
Mechanical complications of myocardial infarction (MI) are often fatal. Little is known about endogenous factors that predispose to myocardial rupture after MI. Ectonucleoside triphosphate diphosphohydrolase (CD39) could be a critical mediator of propensity to myocardial rupture after MI due to its role in modulating inflammation and thrombosis. Using a model of permanent coronary artery ligation, rupture was virtually abrogated in cd39(-/-) mice versus cd39(+/+) controls, with elevated fibrin and collagen deposition and marked neutrophil and macrophage influx...
January 12, 2017: JCI Insight
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
#4
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/28087694/iso-%C3%AE-acids-bitter-components-of-beer-prevent-inflammation-and-cognitive-decline-induced-in-a-mouse-model-of-alzheimer-s-disease
#5
Yasuhisa Ano, Atsushi Dhata, Yoshimasa Taniguchi, Ayaka Hoshi, Kazuyuki Uchida, Akihiko Takashima, Hiroyuki Nakayama
Alongside the rapid growth in aging populations worldwide, prevention and therapy for age-related memory decline and dementia are in great demand to maintain a long healthy life. Here we found that iso-α-acids, hop-derived bitter compounds in beer, enhance microglial phagocytosis and suppress inflammation via activation of the peroxisome proliferator-activated receptor (PPAR-γ). In normal mice, oral administration of iso-α-acids led to a significant increase both in CD11b and CD206 double-positive anti-inflammatory type microglia (P<0...
January 13, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28077367/electroacupuncture-alleviates-the-inflammatory-response-via-effects-on-m1-and-m2-macrophages-after-spinal-cord-injury
#6
Jiagui Zhao, Rongyi Zhang, Likui Wang, Yuanhai Li
BACKGROUND: Macrophages/microglia are important effector cells at the site of spinal cord injury (SCI). M1-type macrophages facilitate innate immunity to remove foreign microbes and wound debris from the injury site. M2-type macrophages exhibit tissue repair properties and attenuate production of pro-inflammatory cytokines. Regulation of the polarisation of M1/M2 macrophages may affect the inflammatory response in SCI and may be related to neurotrophin-3 (NT-3). Electroacupuncture (EA) at GV acupuncture points can be used as an adjuvant therapy for SCI...
January 11, 2017: Acupuncture in Medicine: Journal of the British Medical Acupuncture Society
https://www.readbyqxmd.com/read/28066953/diabetic-and-idiopathic-gastroparesis-is-associated-with-loss-of-cd206-positive-macrophages-in-the-gastric-antrum
#7
M Grover, C E Bernard, P J Pasricha, H P Parkman, S J Gibbons, J Tonascia, K L Koch, R W McCallum, I Sarosiek, W L Hasler, L A B Nguyen, T L Abell, W J Snape, M L Kendrick, T A Kellogg, T J McKenzie, F A Hamilton, G Farrugia
BACKGROUND: Animal studies have increasingly highlighted the role of macrophages in the development of delayed gastric emptying. However, their role in the pathophysiology of human gastroparesis is unclear. Our aim was to determine changes in macrophages and other cell types in the gastric antrum muscularis propria of patients with diabetic and idiopathic gastroparesis. METHODS: Full thickness gastric antrum biopsies were obtained from patients enrolled in the Gastroparesis Clinical Research Consortium (11 diabetic, 6 idiopathic) and 5 controls...
January 9, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28063981/macrophage-activation-status-determines-the-internalization-of-mesoporous-silica-particles-of-different-sizes-exploring-the-role-of-different-pattern-recognition-receptors
#8
Audrey Gallud, Olesja Bondarenko, Neus Feliu, Natalia Kupferschmidt, Rambabu Atluri, Alfonso Garcia-Bennett, Bengt Fadeel
Mesoporous silica-based particles are promising candidates for biomedical applications. Here, we address the importance of macrophage activation status for internalization of AMS6 (approx. 200 nm in diameter) versus AMS8 (approx. 2 μm) mesoporous silica particles and the role of different phagocytosis receptors for particle uptake. To this end, FITC-conjugated silica particles were used. AMS8 were found to be non-cytotoxic both for M-CSF-stimulated (anti-inflammatory) and GM-CSF-stimulated (pro-inflammatory) macrophages, whereas AMS6 exhibited cytotoxicity towards M-CSF-stimulated, but not GM-CSF-stimulated macrophages; this toxicity was, however, mitigated in the presence of serum...
December 27, 2016: Biomaterials
https://www.readbyqxmd.com/read/28056458/selective-m2-macrophage-depletion-leads-to-prolonged-inflammation-in-surgical-wounds
#9
Kerstin Klinkert, Derek Whelan, Anthony J P Clover, Anne-Laure Leblond, Arun H S Kumar, Noel M Caplice
BACKGROUND: A prolonged inflammatory phase is seen in aberrant wound healing and in chronic wounds. Macrophages are central to wound healing. Distinct macrophage subtypes have differing roles both in initial inflammation and in later tissue repair. Broadly, these cells can be divided into M1 and M2 macrophages. M2 macrophage proliferation and differentiation is regulated by colony-stimulating factor 1 (CSF-1) signalling and can be blocked by GW2580, a competitive cFMS kinase inhibitor, thereby allowing for analysis of the effect of M2 blockade on progression of surgical wounds...
January 6, 2017: European Surgical Research. Europäische Chirurgische Forschung. Recherches Chirurgicales Européennes
https://www.readbyqxmd.com/read/28056291/-the-impacts-of-testosterone-on-insulin-sensitivity-and-chronic-low-grade
#10
C L Su, M Chen, W Xu, J F Lin
Objectives: Insulin resistance (IR) is a common manifestation in patients with polycystic ovarian syndrome (PCOS). Both clinical observations and animal studies have demonstrated that IR could be induced by hyperandrogenemia, which is the charac-teristic of PCOS.Nevertheless, the mechanisms of IR in PCOS are still unclear especially at the molecular level.We conduct this study to ellucidate the effects of androgen on insulin sensitivity and chronic low-grade inflammation in adult C57BL/6 female mice. Methods: Eleven adult female C57BL/6 mice aged 8 weeks weredaily injected with testosterone (1...
January 3, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28052009/cancer-associated-fibroblasts-promote-an-immunosuppressive-microenvironment-through-the-induction-and-accumulation-of-protumoral-macrophages
#11
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/28045067/microvasculature-remodeling-in-the-mouse-lower-gut-during-inflammaging
#12
Jae-Ho Jeong, KwangSoo Kim, Daejin Lim, Kun-Hee Kim, Hyung-Seok Kim, Sungsu Lee, Joo-Hye Song, Byoung-Gon Moon, Hyon E Choy, Sang Chul Park
Inflammaging is defined as low-grade, chronic, systemic inflammation in aging, in the absence of overt infection. Age-associated deterioration of gastrointestinal function could be ascribed to the inflammaging, although evidence is yet to emerge. Here we show that microvessels in aging mouse intestine were progressively deprived of supportive structures, microvessel-associated pericytes and adherens junction protein vascular endothelial (VE)-cadherin, and became leaky. This alteration was ascribed to up-regulation of angiopoetin-2 in microvascular endothelial cells...
January 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28045028/chlorogenic-acid-inhibits-glioblastoma-growth-through-repolarizating-macrophage-from-m2-to-m1-phenotype
#13
Nina Xue, Qin Zhou, Ming Ji, Jing Jin, Fangfang Lai, Ju Chen, Mengtian Zhang, Jing Jia, Huarong Yang, Jie Zhang, Wenbin Li, Jiandong Jiang, Xiaoguang Chen
Glioblastoma is an aggressive tumor that is associated with distinctive infiltrating microglia/macrophages populations. Previous studies demonstrated that chlorogenic acid (5-caffeoylquinic acid, CHA), a phenolic compound with low molecular weight, has an anti-tumor effect in multiple malignant tumors. In the present study, we focused on the macrophage polarization to investigate the molecular mechanisms behind the anti-glioma response of CHA in vitro and in vivo. We found that CHA treatment increased the expression of M1 markers induced by LPS/IFNγ, including iNOS, MHC II (I-A/I-E subregions) and CD11c, and reduced the expression of M2 markers Arg and CD206 induced by IL-4, resulting in promoting the production of apoptotic-like cancer cells and inhibiting the growth of tumor cells by co-culture experiments...
January 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28044051/maturation-phenotype-of-peripheral-blood-monocyte-macrophage-after-stimulation-with-lipopolysaccharides-in-irritable-bowel-syndrome
#14
Oscar A Rodríguez-Fandiño, Joselín Hernández-Ruiz, Yolanda López-Vidal, Luis Charúa-Guindic, Galileo Escobedo, Max J Schmulson
Background/Aims: Abnormal immune regulation and increased intestinal permeability augmenting the passage of bacterial molecules that can activate immune cells, such as monocytes/macrophages, have been reported in irritable bowel syndrome (IBS). To compare the maturation phenotype of monocytes/macrophages (CD14+) from IBS patients and controls in the presence or absence of E. coli lipopolysaccharides (LPS), in vitro. Methods: Mononuclear cells were isolated from peripheral blood of 20 Rome II-IBS patients and 19 controls and cultured with or without LPS for 72 hours...
January 2, 2017: Journal of Neurogastroenterology and Motility
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
#15
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
https://www.readbyqxmd.com/read/28032600/the-function-of-cancer-shed-gangliosides-in-macrophage-phenotype-involvement-with-angiogenesis
#16
Tae-Wook Chung, Hee-Jung Choi, Mi-Ju Park, Hee-Jin Choi, Syng-Ook Lee, Keuk-Jun Kim, Cheorl-Ho Kim, Changwan Hong, Kyun-Ha Kim, Myungsoo Joo, Ki-Tae Ha
Tumor-derived gangliosides in the tumor microenvironment are involved in the malignant progression of cancer. However, the molecular mechanisms underlying the effects of gangliosides shed from tumors on macrophage phenotype remain unknown. Here, we showed that ganglioside GM1 highly induced the activity and expression of arginase-1 (Arg-1), a major M2 macrophage marker, compared to various gangliosides in bone marrow-derived macrophages (BMDM), peritoneal macrophages and Raw264.7 macrophage cells. We found that GM1 bound to macrophage mannose receptor (MMR/CD206) and common gamma chain (γc)...
December 10, 2016: Oncotarget
https://www.readbyqxmd.com/read/28018179/temporal-characterization-of-microglia-macrophage-phenotypes-in-a-mouse-model-of-neonatal-hypoxic-ischemic-brain-injury
#17
Nina Hellström Erkenstam, Peter L P Smith, Bobbi Fleiss, Syam Nair, Pernilla Svedin, Wei Wang, Martina Boström, Pierre Gressens, Henrik Hagberg, Kelly L Brown, Karin Sävman, Carina Mallard
Immune cells display a high degree of phenotypic plasticity, which may facilitate their participation in both the progression and resolution of injury-induced inflammation. The purpose of this study was to investigate the temporal expression of genes associated with classical and alternative polarization phenotypes described for macrophages and to identify related cell populations in the brain following neonatal hypoxia-ischemia (HI). HI was induced in 9-day old mice and brain tissue was collected up to 7 days post-insult to investigate expression of genes associated with macrophage activation...
2016: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28007476/asthma-is-characterized-by-more-irf5-m1-and-cd206-m2-macrophages-and-less-il10-m2-like-macrophages-around-airways-compared-to-healthy-airways
#18
Christina Draijer, Carian E Boorsma, Patricia Robbe, Wim Timens, Machteld N Hylkema, Nick H T Ten Hacken, Maarten van den Berge, Dirkje S Postma, Barbro N Melgert
In asthma, macrophage polarization is altered from a state associated with anti-inflammatory responses to a state associated with inflammation as compared to control. Macrophage polarization states is linked to disease severity, sex and ICS treatment.
December 19, 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27999815/assessment-of-the-number-and-phenotype-of-macrophages-in-the-human-bmb-samples-of-cml
#19
Jian-Xin Song, Zi-Jin Dian, Yan Wen, Fen Mei, Rui-Wei Li, Ya-Lian Sa
Macrophages have emerged as a key player in tumor biology. However, their number and phenotype in human bone marrow of biopsy (BMB) samples of chronic myeloid leukemia (CML) and their association with disease progression from an initial chronic phase (CP) to accelerated phase (AP) to advanced blast phase (BP) are still unclear. BMB samples from 127 CML patients and 30 patients with iron-deficiency anemia (IDA) as control group were analyzed by immunohistochemistry. The expression levels of CD68, CD163, and CD206 in BMB samples of CML patients were significantly higher than those in the patients of control group (P < 0...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27994015/newly-formed-endothelial-cells-regulate-myeloid-cell-activity-following-spinal-cord-injury-via-expression-of-cd200-ligand
#20
Merav Cohen, Hila Ben-Yehuda, Ziv Porat, Catarina Raposo, Siamon Gordon, Michal Schwartz
: The central nervous system (CNS) is endowed with several immune-related mechanisms that contribute to its protection and maintenance in homeostasis and under pathology. Here, we discovered an additional mechanism that controls inflammatory responses within the CNS milieu under injurious conditions, involving CD200 ligand (CD200L) expressed by newly-formed endothelial cells. We observed that CD200L is constitutively expressed in the mouse healthy CNS by endothelial cells of the blood-cerebrospinal fluid barrier and of the spinal cord meninges, but not by the endothelium of the blood-spinal cord barrier...
December 19, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
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