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https://www.readbyqxmd.com/read/28822966/inhibitory-actions-of-the-nrg-1-erbb4-pathway-in-macrophages-during-tissue-fibrosis-in-heart-skin-and-lung
#1
Zarha Vermeulen, Anne-Sophie Hervent, Lindsey Dugaucquier, Leni Vandekerckhove, Miche Rombouts, Matthias Beyens, Dorien M Schrijvers, Guido R Y De Meyer, Stuart Maudsley, Gilles W De Keulenaer, Vincent Fm Segers
The neuregulin-1 (NRG-1)/ErbB system is an endothelium-controlled paracrine system modulating cardiac performance and adaptation. Recent studies indicate that NRG-1 has anti-fibrotic effects in the left ventricle (LV), which were explained by direct actions on cardiac fibroblasts. However, the NRG-1/ErbB system also regulates the function of macrophages. In this study, we hypothesized that the anti-fibrotic effect of NRG-1 in the heart is at least partially mediated through inhibitory effects on macrophages...
August 19, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28822855/tetrandrine-cardioprotection-in-ischemia-reperfusion-i-r-injury-via-jak3-stat3-hexokinase-ii
#2
Tie-Jun Zhang, Rui-Xia Guo, Xia Li, Yan-Wei Wang, Yong-Jun Li
Tetrandrine(TET), a bisbenzylisoquinoline alkaloid has been used for the treatment of cardiovascular diseases and hypertension. This study was to investigate whether tetrandrine exerts cardioprotection in ischemia-reperfusion (I/R) injury and the mechanisms involved. The cardioprotection effect and mechanisms of tetrandrine was evaluated by I/R injury cardiac cell model. Hexokinase II (HKII) is the critical regulators of mitochondrial dysfunction in cardiac I/R injury and it participate in the regulation of glycolysis and energy metabolism...
August 16, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28822229/vasculogenesis-and-angiogenesis-initiation-under-normoxic-conditions-through-wnt-%C3%AE-catenin-pathway-in-gliomas
#3
Alexandre Vallée, Rémy Guillevin, Jean-Noël Vallée
The canonical Wnt/β-catenin pathway is up-regulated in gliomas and involved in proliferation, invasion, apoptosis, vasculogenesis and angiogenesis. Nuclear β-catenin accumulation correlates with malignancy. Hypoxia activates hypoxia-inducible factor (HIF)-1α by inhibiting HIF-1α prolyl hydroxylation, which promotes glycolytic energy metabolism, vasculogenesis and angiogenesis, whereas HIF-1α is degraded by the HIF prolyl hydroxylase under normoxic conditions. We focus this review on the links between the activated Wnt/β-catenin pathway and the mechanisms underlying vasculogenesis and angiogenesis through HIF-1α under normoxic conditions in gliomas...
August 19, 2017: Reviews in the Neurosciences
https://www.readbyqxmd.com/read/28821622/the-replication-and-transcription-activator-of-murine-gammaherpesvirus-68-cooperatively-enhances-cytokine-activated-stat3-mediated-gene-expression
#4
Hui-Chen Chang Foreman, Julie Armstrong, Alexis L Santana, Laurie T Krug, Nancy C Reich
Gammaherpesviruses (γΗVs) have a dynamic strategy for life-time persistence, involving productive infection, latency, and intermittent reactivation. In latency reservoirs, such as B lymphocytes, γΗV exists as a viral episome and expresses few viral genes. Although the ability of γHV to reactivate from latency and re-enter the lytic phase is challenging to investigate and control, it is known that the γΗV replication and transcription activator, RTA, can promote lytic reactivation. In this study, we provide first evidence that RTA of murine γΗV 68 (MHV68) selectively binds and enhances the activity of tyrosine-phosphorylated host STAT3...
August 15, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28820405/antiphospholipid-syndrome-and-monocytes-new-aspects
#5
A Blbulyan, A Martirosyan, M Petrek, Z Navratilova, G Manukyan
After discovery of antiphospholipid syndrome (APS) our understanding of molecular mechanisms of living matter has become more sophisticated and on this way monocytes has become crucial player, particularly in pathogenesis of APS. Thrombotic and non-thrombotic complications of APS could be explained by monocytes' activation too. But mechanisms underlying their activation are poorly investigated. So we aimed to determine transcriptional activity of monocytes after exposing them to low concentrations of lipopolysaccharide (LPS) and LPS+ATP using comparative of RT-PCR...
July 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28820313/rip-off-stat3-to-counteract-tumor-progression
#6
Jawahar Kopparam, Etienne Meylan
No abstract text is available yet for this article.
August 18, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28820056/involvement-of-cd24-in-multiple-cancer-related-pathways-makes-it-an-interesting-new-target-for-cancer-therapy
#7
Shirin Eyvazi, Bahram Kazemi, Siavoush Dastmalchi, Mojgan Bandehpour
CD24 (cluster of differentiation 24) is a small heavy glycosylated protein, which is overexpressed in many cancer and some cancer stem cells and is associated with the development, invasion, and metastasis of cancer cells. The exact role of CD24 in these processes is not fully understood, however, in this article, it has been tried to present collection of cancer-related mechanisms attributed to CD24. Based on the literature, CD24 dis-regulates different signaling pathways in various cancer cells, including; Src kinases, STAT3, EGFR, Wnt/β-catenin and MAPK...
August 18, 2017: Current Cancer Drug Targets
https://www.readbyqxmd.com/read/28819999/high-glucose-induces-hgf-independent-activation-of-met-receptor-in-human-renal-tubular-epithelium
#8
Lucia Mesarosova, Peter Ochodnicky, Jaklien C Leemans, Sandrine Florquin, Peter Krenek, Jan Klimas
CONTEXT: The role of hepatocyte growth factor (HGF) in diabetic kidney damage remains controversial. OBJECTIVE: To test the hypothesis that high glucose levels activate pathways related to HGF and its receptor Met and that this could participate in glucose-induced renal cell damage. MATERIALS AND METHODS: HK2 cells, a human proximal tubule epithelial cell line, were stimulated with high glucose for 48 hours. Levels of pMet/Met, pEGFR/EGFR, pSTAT3/STAT3, pAkt/Akt and pERK1/2/ERK1/2 were studied by immunoblotting...
August 18, 2017: Journal of Receptor and Signal Transduction Research
https://www.readbyqxmd.com/read/28819918/network-analysis-of-se-and-zn-related-proteins-in-the-serum-proteomics-expression-profile-of-the-endemic-dilated-cardiomyopathy-keshan-disease
#9
Sen Wang, Yanyan Lv, Yingting Wang, Peiru Du, Wuhong Tan, Mikko J Lammi, Xiong Guo
Keshan disease (KD) is an endemic cardiomyopathy with high mortality. Selenium (Se) and zinc (Zn) deficiencies are closely related to KD. The molecular mechanism of KD pathogenesis is still unclear. There are only few studies on the interaction of trace elements and proteins associated with the pathogenesis of KD. In this study, isobaric tags for relative and absolute quantitation (iTRAQ)-coupled two-dimensional liquid chromatography tandem mass spectrometry (2DLC-MS/MS) technique analysis was used to analyze the differential expression of proteins from serum samples...
August 18, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28819544/hypoxia-downregulates-mapk-erk-but-not-stat3-signaling-in-ros-dependent-and-hif-1-independent-manners-in-mouse-embryonic-stem-cells
#10
Jan Kučera, Julie Netušilová, Stanislava Sladeček, Martina Lánová, Ondřej Vašíček, Kateřina Štefková, Jarmila Navrátilová, Lukáš Kubala, Jiří Pacherník
Hypoxia is involved in the regulation of stem cell fate, and hypoxia-inducible factor 1 (HIF-1) is the master regulator of hypoxic response. Here, we focus on the effect of hypoxia on intracellular signaling pathways responsible for mouse embryonic stem (ES) cell maintenance. We employed wild-type and HIF-1α-deficient ES cells to investigate hypoxic response in the ERK, Akt, and STAT3 pathways. Cultivation in 1% O2 for 24 h resulted in the strong dephosphorylation of ERK and its upstream kinases and to a lesser extent of Akt in an HIF-1-independent manner, while STAT3 phosphorylation remained unaffected...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28819423/reelin-promotes-adhesion-of-multiple-myeloma-cells-to-bone-marrow-stromal-cells-via-integrin-%C3%AE-1-signaling
#11
Liang Lin, Xinwei Zhang, Li Cao, Quanming An, Jie Hao, Yan Zhang, Rong Jin, Yingjun Chang, Xiaojun Huang, Jin Lu, Qing Ge
The close interaction between tumor cells and bone marrow stromal cells plays a crucial role in the tumorigenesis of multiple myeloma (MM). Reelin, an extracellular matrix protein, is found expressed in myeloma cells and is negatively associated with prognosis. We examined the role of Reelin in myeloma cell adhesion to bone marrow stromal cells and the signaling pathways involved. The results revealed that Reelin promoted the adhesion of myeloma cells to HS-5, a bone marrow stromal cell line, via the activation of β1 integrin...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28819415/szrd1-is-a-novel-protein-that-functions-as-a-potential-tumor-suppressor-in-cervical-cancer
#12
Ning Zhao, Guoying Zhang, Minwei He, He Huang, Lulu Cao, Ang Yin, Pingzhang Wang, Lu Wang
SZRD1 is a novel gene screened out by high-throughput platform, and so far there exists no systematic function reports. The purpose of our study is to discover the function and mechanism of this novel human gene. Bioinformatics analysis indicates that SZRD1 is a highly conserved intracellular protein. After overexpression of SZRD1, we found that SZRD1 could arrest the cell cycle in G2 phase and play a role in inhibiting cell proliferation and inducing apoptosis. In contrast, after knockdown of endogenous SZRD1, we concluded that it could promote cell proliferation...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28819390/fluorofenidone-inhibits-the-proliferation-of-lung-adenocarcinoma-cells
#13
Zheng-Hao Deng, Jie Meng, Juan Tang, Gao-Yun Hu, Li-Jian Tao
Background: Lung carcinoma is the leading cause of malignant tumor related mortality in China in recent decades, and the development of new and effective therapies for patients with advanced lung carcinoma is needed. We recently found that fluorofenidone (FD), a newly developed pyridine compound, reduced the activation of Stat3 (Signal transducer and activator of transcription 3) in fibroblasts. Stat3 plays a crucial role in the development of lung cancer and may represent a new therapeutic target. In this study, we examined the effect of FD on human lung adenocarcinoma cells in vivo and in vitro...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28819340/corrigendum-to-epstein-barr-virus-induced-gene-3-ebi3-blocking-leads-to-induce-antitumor-cytotoxic-t-lymphocyte-response-and-suppress-tumor-growth-in-colorectal-cancer-by-bidirectional-reciprocal-regulation-stat3-signaling-pathway
#14
Yanfang Liang, Qianqian Chen, Wenjing Du, Can Chen, Feifei Li, Jingying Yang, Jianyu Peng, Dongping Kang, Bihua Lin, Xingxing Chai, Keyuan Zhou, Jincheng Zeng
[This corrects the article DOI: 10.1155/2016/3214105.].
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28819180/egfr-is-a-pivotal-regulator-of-thrombin-mediated-inflammation-in-primary-human-nucleus-pulposus-culture
#15
Bor-Ren Huang, Tzu-Sheng Chen, Da-Tian Bau, I-Chen Chuang, Cheng-Fang Tsai, Pei-Chun Chang, Dah-Yuu Lu
We found that the coagulation and cytokine pathways were important mechanisms involve in the degeneration of intervertebral discs (IVD) using a microarray approach to analyze gene expression in different grades of specimens. Furthermore, using a cytokine/chemokine array, a significant increase in CXCL8 expression was observed in human nucleus pulposus (NP) cells after thrombin treatment. The enhancement of CXCL8 expression by thrombin was activated by the PAR1 receptor. Importantly, analysis of degenerated human NP tissue samples showed that EGFR expression positively correlated with the grade of tissue degeneration...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28819126/targeted-blockade-of-tgf-%C3%AE-and-il-6-jak2-stat3-pathways-inhibits-lung-cancer-growth-promoted-by-bone-marrow-derived-myofibroblasts
#16
Jindong Shi, Jingjing Feng, Juan Xie, Zhoufang Mei, Tianyun Shi, Shengmei Wang, Yong Du, Gong Yang, Yougen Wu, Xiaojiao Cheng, Shanqun Li, Liming Zhu, Chung S Yang, Shuiping Tu, Zhijun Jie
To investigate the role of TGF-β and IL-6 in myofibroblasts (MFs) - lung cancer cell interactions, lung cancer cells (Lewis and CTM-167 cell lines) were stimulated by IL-6, MF-conditioned medium (MF-CM) or MFs, with or without TGF-β signaling inhibitor - SB431542 and/or JAK2/STAT3 inhibitor - JSI-124. MFs were stimulated by TGF-β, cancer cell-CM or cancer cells, with or without SB431542 and JSI-124. Cell proliferation, the levels of cytokines, expression of mRNA and protein were determined. Mice bearing xenograft tumors were intraperitoneally treated with SB431542 or JSI-124 and monitored for up to 45 days...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818665/irf-5-accelerates-leukocyte-adhesion-to-endothelial-cells-in-ischemia-reperfusion-injury-through-regulating-the-transcription-of-vcam-1
#17
Hongbin Cai, Zhuhua Yao, Wenting Li
Ischemia-reperfusion injury (IRI) has been implicated in many pathological conditions, including cardiovascular diseases. Adhesion of leukocytes to the surface of endothelial cells has been considered as one of the principle steps in the pathological cascade of inflammatory tissue damage during IRI. The role of the transcriptional factor interferon regulatory factor-5 (IRF-5) in endothelial physiology remains unknown. Here, we report that IRF-5 is expressed in human umbilical vein endothelial cells (HUVECs) and is rapidly upregulated in response to IRI, mediated by the JAK2/STAT3 pathway...
August 14, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28817117/increased-tumor-infiltrating-cd45ra-ccr7-regulatory-t-cell-subset-with-immunosuppressive-properties-foster-gastric-cancer-progress
#18
Fang-Yuan Mao, Hui Kong, Yong-Liang Zhao, Liu-Sheng Peng, Weisan Chen, Jin-Yu Zhang, Ping Cheng, Ting-Ting Wang, Yi-Pin Lv, Yong-Sheng Teng, Xiao-Long Fu, Yu-Gang Liu, Xiao-Long Wu, Chuan-Jie Hao, Nan You, Ping Luo, Pei-Wu Yu, Quan-Ming Zou, Gang Guo, Yuan Zhuang
Regulatory T cells (Tregs) are major components of tumor-infiltrating immune cells with potent immunosuppressive properties in gastric cancer (GC) microenvironment. However, different subsets of the Tregs and their relevance to GC are unknown. Here, we found that patients with GC showed a significantly higher Tregs infiltration in tumors, and CD45RA(-)CCR7(-) Treg subset constituted most tumor-infiltrating Tregs. Tumor-infiltrating CD45RA(-)CCR7(-) Treg subset with an effector/memory phenotype accumulated in tumors and expressed low level of HLA-DR...
August 17, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28816577/coenzyme-q10-inhibits-th17-and-stat3-signaling-pathways-to-ameliorate-colitis-in-mice
#19
Seon-Yeong Lee, Seung Hoon Lee, Eun-Ji Yang, Jae-Kyung Kim, Eun-Kyung Kim, KyungAh Jung, Hongsoon Jung, Kyungjin Lee, Han Hee Lee, Bo-In Lee, Sung-Hwan Park, Dong Yun Shin, Mi-La Cho
Coenzyme Q10 (CoQ10) is a powerful antioxidant substance synthesized in the body. The current study aimed to determine whether CoQ10 suppresses inflammation and inhibits p-STAT3 expression in an experimental colitis mouse model. The mice were orally fed with CoQ10 once a day for 13 days. Histological analysis of the colons was performed by immunohistochemistry. Expression of IL-17, FOXP3, p53, AMPK, and mTOR and activation of p-STAT3 and p-STAT5 in lymph node and spleen tissues were detected by confocal microscopy of stained tissue sections...
August 17, 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/28816378/correlation-of-the-expressions-of-igf1r-rack1-stat3-and-bcl-xl-in-nasopharyngeal-carcinoma-with-the-clinicopathological-features-and-prognosis-of-nasopharyngeal-carcinoma
#20
Shan Wang, Min Shen, Xin Wen, Xin-Rui Han, Yong-Jian Wang, Shao-Hua Fan, Juan Zhuang, Zi-Feng Zhang, Qun Shan, Meng-Qiu Li, Bin Hu, Chun-Hui Sun, Xia Ge, Qiu-Mei Lei, Dong-Mei Wu, Jun Lu, Yuan-Lin Zheng
The aim of this study was to investigate the correlation of expression of IGF1R-RACK1-STAT3 and Bcl-xl in nasopharyngeal carcinoma (NPC) with the clinicopathological features and the prognosis of NPC. Our study selected 215 NPC tissues and 178 chronic nasopharyngitis tissues (control group). Positive expression rates of IGF1R, RACK1, STAT3 and Bcl-xl were tested by immunohistochemical method, and expression of IGF1R, RACK1, STAT3, Bcl-xl, Bcl-2 and Bax by western blotting. Correlation of IGF1R, RACK1, STAT3 and Bcl-xl with the clinicopathological features of NPC was analyzed...
August 17, 2017: Journal of Cellular Biochemistry
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