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macrophage catenin

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https://www.readbyqxmd.com/read/28415949/%C3%AE-catenin-promotes-intracellular-bacterial-killing-via-suppression-of-pseudomonas-aeruginosa-triggered-macrophage-autophagy
#1
Qiang Fu, Kang Chen, Qian Zhu, Weijia Wang, Fuda Huang, Lishao Miao, Xinger Wu
Objective To investigate β-catenin-mediated bacterial elimination during Pseudomonas aeruginosa infection of macrophage-like RAW264.7 cells. Methods Cell viability and catenin beta 1 ( CTNNB1) expression in RAW264.7 cells following P. aeruginosa infection versus uninfected cells, were detected by cell counting kit-8 assay and β-catenin Western blots. RAW264.7 cells with CTNNB1 overexpression were established with β-catenin lentivirus using flow cytometry and clonogenic limiting dilution assays. Bacterial killing was measured by plate counts; phagocytosis and nitric oxide (NO) were measured by flow cytometry; and reactive oxygen species (ROS) were measured using Griess reaction...
April 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28410235/cysteinyl-leukotriene-receptor-1-facilitates-tumorigenesis-in-a-mouse-model-of-colitis-associated-colon-cancer
#2
Janina Osman, Sayeh Savari, Naveen Kumar Chandrashekar, Kishan Bellamkonda, Desiree Douglas, Anita Sjölander
Cysteinyl leukotriene receptor 1 (CysLT1R) has been shown to be up-regulated in the adenocarcinomas of colorectal cancer patients, which is associated with a poor prognosis. In a spontaneous model of colon cancer, CysLT1R disruption was associated with a reduced tumor burden in double-mutant female mice (ApcMin/+/Cysltr1-/-) compared to ApcMin/+ littermates. In the current study, we utilized a genetic approach to investigate the effect of CysLT1R in the induced azoxymethane/dextran sulfate sodium (AOM/DSS) model of colitis-associated colon cancer...
March 30, 2017: Oncotarget
https://www.readbyqxmd.com/read/28386329/inhibiting-endoplasmic-reticulum-stress-by-lithium-chloride-contributes-to-the-integrity-of-blood-spinal-cord-barrier-and-functional-recovery-after-spinal-cord-injury
#3
Zili He, Yulong Zhou, Qingqing Wang, Jiawei Li, Zengming Zheng, Jian Chen, Hongyu Zhang, Zhouguang Wang, Huazi Xu, Jian Xiao
Endoplasmic reticulum (ER) stress play important roles in the spinal cord injury (SCI), which including blood-spinal cord barrier (BSCB) disruption. Lithium chloride (LiCl) is a clinical drug for bipolar mood disorders and contributes to neuroprotection. This study aims to investigate the effects of LiCl on BSCB disruption and the ER stress pathway induced by spinal cord injury. We examined the integrity of the BSCB with Evans Blue dye and macrophages extravasation, measured the microvessels loss, the junction proteins degeneration, the activation ER stress, and the locomotor function recovery...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28383024/multiple-mechanisms-are-involved-in-salt-sensitive-hypertension-induced-renal-injury-and-interstitial-fibrosis
#4
Shi-Yao Wei, Yu-Xiao Wang, Qing-Fang Zhang, Shi-Lei Zhao, Tian-Tian Diao, Jian-Si Li, Wen-Rui Qi, Yi-Xin He, Xin-Yu Guo, Man-Zhu Zhang, Jian-Yu Chen, Xiao-Ting Wang, Qiu-Ju Wei, Yu Wang, Bing Li
Salt-sensitive hypertension (SSHT) leads to kidney interstitial fibrosis. However, the potential mechanisms leading to renal fibrosis have not been well investigated. In present study, Dahl salt-sensitive (DS) rats were divided into three groups: normal salt diet (DSN), high salt diet (DSH) and high salt diet treated with hydrochlorothiazide (HCTZ) (DSH + HCTZ). A significant increase in systolic blood pressure (SBP) was observed 3 weeks after initiating the high salt diet, and marked histological alterations were observed in DSH rats...
April 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28355185/myeloid-progenitor-cluster-formation-drives-emergency-and-leukaemic-myelopoiesis
#5
Aurélie Hérault, Mikhail Binnewies, Stephanie Leong, Fernando J Calero-Nieto, Si Yi Zhang, Yoon-A Kang, Xiaonan Wang, Eric M Pietras, S Haihua Chu, Keegan Barry-Holson, Scott Armstrong, Berthold Göttgens, Emmanuelle Passegué
Although many aspects of blood production are well understood, the spatial organization of myeloid differentiation in the bone marrow remains unknown. Here we use imaging to track granulocyte/macrophage progenitor (GMP) behaviour in mice during emergency and leukaemic myelopoiesis. In the steady state, we find individual GMPs scattered throughout the bone marrow. During regeneration, we observe expanding GMP patches forming defined GMP clusters, which, in turn, locally differentiate into granulocytes. The timed release of important bone marrow niche signals (SCF, IL-1β, G-CSF, TGFβ and CXCL4) and activation of an inducible Irf8 and β-catenin progenitor self-renewal network control the transient formation of regenerating GMP clusters...
April 6, 2017: Nature
https://www.readbyqxmd.com/read/28345588/macrophages-induce-akt-%C3%AE-catenin-dependent-lgr5-stem-cell-activation-and-hair-follicle-regeneration-through-tnf
#6
Xusheng Wang, Haiyan Chen, Ruiyun Tian, Yiling Zhang, Marina S Drutskaya, Chengmei Wang, Jianfeng Ge, Zhimeng Fan, Deqiang Kong, Xiaoxiao Wang, Ting Cai, Ying Zhou, Jingwen Wang, Jinmei Wang, Shan Wang, Zhihai Qin, Huanhuan Jia, Yue Wu, Jia Liu, Sergei A Nedospasov, Edward E Tredget, Mei Lin, Jianjun Liu, Yuyang Jiang, Yaojiong Wu
Skin stem cells can regenerate epidermal appendages; however, hair follicles (HF) lost as a result of injury are barely regenerated. Here we show that macrophages in wounds activate HF stem cells, leading to telogen-anagen transition (TAT) around the wound and de novo HF regeneration, mostly through TNF signalling. Both TNF knockout and overexpression attenuate HF neogenesis in wounds, suggesting dose-dependent induction of HF neogenesis by TNF, which is consistent with TNF-induced AKT signalling in epidermal stem cells in vitro...
March 27, 2017: Nature Communications
https://www.readbyqxmd.com/read/28336942/selective-inhibitor-of-wnt-%C3%AE-catenin-cbp-signaling-ameliorates-hepatitis-c-virus-induced-liver-fibrosis-in-mouse-model
#7
Yuko Tokunaga, Yosuke Osawa, Takahiro Ohtsuki, Yukiko Hayashi, Kenzaburo Yamaji, Daisuke Yamane, Mitsuko Hara, Keisuke Munekata, Kyoko Tsukiyama-Kohara, Tsunekazu Hishima, Soichi Kojima, Kiminori Kimura, Michinori Kohara
Chronic hepatitis C virus (HCV) infection is one of the major causes of serious liver diseases, including liver cirrhosis. There are no anti-fibrotic drugs with efficacy against liver cirrhosis. Wnt/β-catenin signaling has been implicated in the pathogenesis of a variety of tissue fibrosis. In the present study, we investigated the effects of a β-catenin/CBP (cyclic AMP response element binding protein) inhibitor on liver fibrosis. The anti-fibrotic activity of PRI-724, a selective inhibitor of β-catenin/CBP, was assessed in HCV GT1b transgenic mice at 18 months after HCV genome expression...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28287403/rankl-coordinates-multiple-osteoclastogenic-pathways-by-regulating-expression-of-ubiquitin-ligase-rnf146
#8
Yoshinori Matsumoto, Jose Larose, Oliver A Kent, Melissa Lim, Adele Changoor, Lucia Zhang, Yaryna Storozhuk, Xiaohong Mao, Marc D Grynpas, Feng Cong, Robert Rottapel
Bone undergoes continuous remodeling due to balanced bone formation and resorption mediated by osteoblasts and osteoclasts, respectively. Osteoclasts arise from the macrophage lineage, and their differentiation is dependent on RANKL, a member of the TNF family of cytokines. Here, we have provided evidence that RANKL controls the expression of 3BP2, an adapter protein that is required for activation of SRC tyrosine kinase and simultaneously coordinates the attenuation of β-catenin, both of which are required to execute the osteoclast developmental program...
April 3, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28251883/tomm22-knockdown-mediated-hepatocyte-damages-elicit-both-the-formation-of-hybrid-hepatocytes-and-biliary-conversion-to-hepatocytes-in-zebrafish-larvae
#9
Jianchen Wu, Tae-Young Choi, Donghun Shin
The liver has a highly regenerative capacity. In the normal liver, hepatocytes proliferate to restore lost liver mass.However, when hepatocyte proliferation is impaired, biliary epithelial cells (BECs) activate and contribute to hepatocytes. We previously reported in zebrafish that upon severe hepatocyte ablation, BECs extensively contribute to regenerated hepatocytes. It was also speculated that BECdriven liver regeneration might occur in another zebrafish liver injury model in which temporary knockdown of the mitochondrial import gene tomm22 by morpholino antisense oligonucleotides (MO) induces hepatocyte death...
March 1, 2017: Gene Expression
https://www.readbyqxmd.com/read/28241877/ovatodiolide-suppresses-colon-tumorigenesis-and-prevents-polarization-of-m2-tumor-associated-macrophages-through-yap-oncogenic-pathways
#10
Yan-Jiun Huang, Ching-Kuo Yang, Po-Li Wei, Thanh-Tuan Huynh, Jacqueline Whang-Peng, Tzu-Ching Meng, Michael Hsiao, Yew-Ming Tzeng, Alexander Th Wu, Yun Yen
BACKGROUND: An increased expression of Yes-associated protein (YAP1) has been shown to promote tumorigenesis in many cancer types including colon. However, the role of YAP1 in promoting colon tumorigenesis remains unclear. Here, we demonstrate that YAP1 expression is associated with M2 tumor-associated macrophage polarization and the generation of colon cancer stem-like cells. YAP1 downregulation by gene silencing or a phytochemical, ovatodiolide, not only suppresses colon cancer tumorigenesis but also prevents M2 TAM polarization...
February 28, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28220834/stellera-chamaejasme-and-its-constituents-induce-cutaneous-wound-healing-and-anti-inflammatory-activities
#11
Myungsuk Kim, Hee Ju Lee, Ahmad Randy, Ji Ho Yun, Sang-Rok Oh, Chu Won Nho
Stellera chamaejasme L. (Thymelaeaceae) is a perennial herb that is widely used in traditional Chinese medicine to treat tumours, tuberculosis and psoriasis. S. chamaejasme extract (SCE) possesses anti-inflammatory, analgesic and wound healing activities; however, the effect of S. chamaejasme and its active compounds on cutaneous wound healing has not been investigated. We assessed full-thickness wounds of Sprague-Dawley (SD) rats and topically applied SCE for 2 weeks. In vitro studies were performed using HaCaT keratinocytes, Hs68 dermal fibroblasts and RAW 264...
February 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28219919/dickkopf-3-ablation-attenuates-the-development-of-atherosclerosis-in-apoe-deficient-mice
#12
Wen-Lin Cheng, Yang Yang, Xiao-Jing Zhang, Junhong Guo, Jun Gong, Fu-Han Gong, Zhi-Gang She, Zan Huang, Hao Xia, Hongliang Li
BACKGROUND: Dickkopf-3 (DKK3) is a negative regulator of the Wnt/β-catenin signaling pathway, which is involved in inflammation. However, little is known about the relationship between DKK3 expression and the progression of atherosclerosis. The aim of the present study was to define the role of DKK3 and its potential mechanism in the development of atherosclerosis. METHODS AND RESULTS: Immunofluorescence analysis showed that DKK3 was strongly expressed in macrophages of atherosclerotic plaques from patients with coronary heart disease and in hyperlipidemic mice...
February 20, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28187526/secondary-bile-acid-induced-dysbiosis-promotes-intestinal-carcinogenesis
#13
Hailong Cao, Mengque Xu, Wenxiao Dong, Baoru Deng, Sinan Wang, Yujie Zhang, Shan Wang, Shenhui Luo, Weiqiang Wang, Yanrong Qi, Jianxin Gao, Xiaocang Cao, Fang Yan, Bangmao Wang
The gut microbiota plays an important role in maintaining intestinal homeostasis. Dysbiosis is associated with intestinal tumorigenesis. Deoxycholic acid (DCA), a secondary bile acid increased by a western diet, correlates with intestinal carcinogenesis. However, evidence relating bile acids, intestinal microbiota and tumorigenesis are limited. In our study, we investigated the effect of DCA on induction of intestinal dysbiosis and its roles in intestinal carcinogenesis. Alteration of the composition of the intestinal microbiota was induced in DCA-treated APC(min/+) mice, which was accompanied by impaired intestinal barrier, gut low grade inflammation and tumor progression...
February 10, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28152578/pten-%C3%AE-catenin-signaling-modulates-regulatory-t-cells-and-inflammatory-responses-in-mouse-liver-ischemia-and-reperfusion-injury
#14
Qiang Zhu, Changyong Li, Kunpeng Wang, Shi Yue, Longfeng Jiang, Michael Ke, Ronald W Busuttil, Jerzy W Kupiec-Weglinski, Feng Zhang, Ling Lu, Bibo Ke
The phosphatase and tensin homolog deleted on chromosome 10 (PTEN) plays an important role in regulating T cell activation during inflammatory response. Activation of β-catenin is crucial for maintaining immune homeostasis. This study investigates the functional roles and molecular mechanisms by which PTEN-β-catenin signaling promotes regulatory T cell (Treg) induction in a mouse model of liver ischemia and reperfusion injury (IRI). We found that mice with myeloid specific PTEN knockout (PTEN(M-KO) ) exhibited reduced liver damage as evidenced by decreased levels of serum ALT, intrahepatic macrophage trafficking, and pro-inflammatory mediators compared to the PTEN-proficient (PTEN(FL/FL) ) controls...
February 2, 2017: Liver Transplantation
https://www.readbyqxmd.com/read/28145774/macrophages-and-fibrosis-resolution-harnessing-wnt-%C3%AE-catenin-signaling-as-the-way-and-the-means
#15
Elizabeth F Redente
No abstract text is available yet for this article.
February 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28123855/microrna-454-shows-anti-angiogenic-and-anti-metastatic-activity-in-pancreatic-ductal-adenocarcinoma-by-targeting-lrp6
#16
Yue Fan, Chenye Shi, Tianyu Li, Tiantao Kuang
Our previous work has shown that microRNA-454 (miR-454) can inhibit the growth of pancreatic ductal adenocarcinoma (PDAC) by blocking the recruitment of bone marrow-derived macrophages. In the present study, we aimed to explore its role in the proliferation, invasion, and pro-angiogenic activity of PDAC cells in vitro and lung metastasis in vivo. PANC-1 and MiaPaCa-2 cells were transfected with a miR-454-expressing plasmid and tested for cell proliferation, colony formation, cell cycle distribution, invasion, and pro-angiogenic activity...
2017: American Journal of Cancer Research
https://www.readbyqxmd.com/read/28098359/m2-like-macrophages-induce-colon-cancer-cell-invasion-via-matrix-metalloproteinases
#17
Katyayni Vinnakota, Yuan Zhang, Benson Chellakkan Selvanesan, Geriolda Topi, Tavga Salim, Janna Sand-Dejmek, Gunilla Jönsson, Anita Sjölander
The inflammatory milieu plays an important role in colon cancer development and progression. Previously, we have shown that tumor-associated macrophages (TAMs), an important component of the tumor microenvironment, are enriched in tumors compared with normal tissue and confer a poorer prognosis. In the present study, we found that matrix metallopeptidase-9 (MMP-9), which degrades extracellular matrix proteins, was increased in biopsies from colon cancer patients and in mouse xenografts with SW480 cell-derived tumors...
January 18, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28052876/pericytes-and-immune-cells-contribute-to-complement-activation-in-tubulointerstitial-fibrosis
#18
Sandhya Xavier, Ranjit K Sahu, Susan G Landes, Jing Yu, Ronald P Taylor, Srinivas Ayyadevara, Judit Megyesi, William B Stallcup, Jeremy S Duffield, Edimara S Reis, John D Lambris, Didier Portilla
We have examined the pathogenic role of increased complement expression and activation during kidney fibrosis. Here, we show that PDGFRβ-positive pericytes isolated from mice subjected to obstructive or folic acid injury secrete C1q. This was associated with increased production of proinflammatory cytokines, extracellular matrix components, collagens, and increased Wnt3a-mediated activation of Wnt/β-catenin signaling, which are hallmarks of myofibroblast activation. Real-time PCR, immunoblots, immunohistochemistry, and flow cytometry analysis performed in whole kidney tissue confirmed increased expression of C1q, C1r, and C1s as well as complement activation, which is measured as increased synthesis of C3 fragments predominantly in the interstitial compartment...
March 1, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28018344/adjunct-strategies-for-tuberculosis-vaccines-modulating-key-immune-cell-regulatory-mechanisms-to-potentiate-vaccination
#19
REVIEW
Lakshmi Jayashankar, Richard Hafner
Tuberculosis (TB) remains a global health threat of alarming proportions, resulting in 1.5 million deaths worldwide. The only available licensed vaccine, Bacillus Calmette-Guérin, does not confer lifelong protection against active TB. To date, development of an effective vaccine against TB has proven to be elusive, and devising newer approaches for improved vaccination outcomes is an essential goal. Insights gained over the last several years have revealed multiple mechanisms of immune manipulation by Mycobacterium tuberculosis (Mtb) in infected macrophages and dendritic cells that support disease progression and block development of protective immunity...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27869648/hippo-signaling-interactions-with-wnt-%C3%AE-catenin-and-notch-signaling-repress-liver-tumorigenesis
#20
Wantae Kim, Sanjoy Kumar Khan, Jelena Gvozdenovic-Jeremic, Youngeun Kim, Jason Dahlman, Hanjun Kim, Ogyi Park, Tohru Ishitani, Eek-Hoon Jho, Bin Gao, Yingzi Yang
Malignant tumors develop through multiple steps of initiation and progression, and tumor initiation is of singular importance in tumor prevention, diagnosis, and treatment. However, the molecular mechanism whereby a signaling network of interacting pathways restrains proliferation in normal cells and prevents tumor initiation is still poorly understood. Here, we have reported that the Hippo, Wnt/β-catenin, and Notch pathways form an interacting network to maintain liver size and suppress hepatocellular carcinoma (HCC)...
January 3, 2017: Journal of Clinical Investigation
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