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https://www.readbyqxmd.com/read/27913726/competitive-binding-between-seryl-trna-synthetase-yy1-complex-and-nfkb1-at-the-distal-segment-results-in-differential-regulation-of-human-vegfa-promoter-activity-during-angiogenesis
#1
Chuan-Yang Fu, Po-Chun Wang, Huai-Jen Tsai
Vascular endothelial growth factor (VEGF) plays a pivotal role in angiogenesis. Previous studies focused on transcriptional regulation modulated by proximal upstream cis-regulatory elements (CREs) of the human vegfa promoter. However, we hypothesized that distal upstream CREs may also be involved in controlling vegfa transcription. In this study, we found that the catalytic domain of Seryl-tRNA synthetase (SerRS) interacted with transcription factor Yin Yang 1 (YY1) to form a SerRS/YY1 complex that negatively controls vegfa promoter activity through binding distal CREs at -4654 to -4623 of vegfa Particularly, we demonstrated that the -4654 to -4623 segment, which predominantly controls vegfa promoter activity, is involved in competitive binding between SerRS/YY1 complex and NFKB1...
December 1, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/27909715/a-new-scaffold-containing-small-intestinal-submucosa-and-mesenchymal-stem-cells-improves-pancreatic-islet-function-and-survival-in%C3%A2-vitro-and-in%C3%A2-vivo
#2
Dan Wang, Xiaoming Ding, Wujun Xue, Jin Zheng, Xiaohui Tian, Yang Li, Xiaohong Wang, Huanjin Song, Hua Liu, Xiaohui Luo
It is unknown whether a scaffold containing both small intestinal submucosa (SIS) and mesenchymal stem cells (MSCs) for transplantation may improve pancreatic islet function and survival. In this study, we examined the effects of a SIS-MSC scaffold on islet function and survival in vitro and in vivo. MSCs and pancreatic islets were isolated from Sprague-Dawley rats, and SIS was isolated from Bamei pigs. The islets were apportioned among 3 experimental groups as follows: SIS-islets, SIS-MSC-islets and control-islets...
November 29, 2016: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/27900563/lncrna-hotair-promotes-cisplatin-resistance-in-gastric-cancer-by-targeting-mir-126-to-activate-the-pi3k-akt-mrp1-genes
#3
Jin Yan, Yini Dang, Shiyu Liu, Yifeng Zhang, Guoxin Zhang
Altered expression of long noncoding RNAs (lncRNAs) has shown to associate with human cancer development and progression and drug resistance. LncRNA HOX antisense intergenic RNA (HOTAIR) regulates chromatin state and highly expressed in various human cancers. This study analyzed HOTAIR expression in gastric cancer cells and tissues and then assessed the effects of HOTAIR on modulation of gastric cancer cell sensitivity to cisplatin and the underlying molecular events. The data showed that HOTAIR was significantly upregulated in cisplatin-resistant gastric cancer cells and tissues compared with control cells and noncancerous gastric tissues...
November 30, 2016: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/27898394/mef2-transcription-factors-are-key-regulators-of-sprouting-angiogenesis
#4
Natalia Sacilotto, Kira M Chouliaras, Leonid L Nikitenko, Yao Wei Lu, Martin Fritzsche, Marsha D Wallace, Svanhild Nornes, Fernando García-Moreno, Sophie Payne, Esther Bridges, Ke Liu, Daniel Biggs, Indrika Ratnayaka, Shane P Herbert, Zoltán Molnár, Adrian L Harris, Benjamin Davies, Gareth L Bond, George Bou-Gharios, John J Schwarz, Sarah De Val
Angiogenesis, the fundamental process by which new blood vessels form from existing ones, depends on precise spatial and temporal gene expression within specific compartments of the endothelium. However, the molecular links between proangiogenic signals and downstream gene expression remain unclear. During sprouting angiogenesis, the specification of endothelial cells into the tip cells that lead new blood vessel sprouts is coordinated by vascular endothelial growth factor A (VEGFA) and Delta-like ligand 4 (Dll4)/Notch signaling and requires high levels of Notch ligand DLL4...
October 15, 2016: Genes & Development
https://www.readbyqxmd.com/read/27897268/germline-polymorphisms-as-biomarkers-of-tumor-response-in-colorectal-cancer-patients-treated-with-anti-egfr-monoclonal-antibodies-a-systematic-review-and-meta-analysis
#5
E K Morgen, H-J Lenz, D J Jonker, D Tu, G Milano, F Graziano, J Zalcberg, C S Karapetis, A Dobrovic, C J O'Callaghan, G Liu
Studies of germline polymorphisms as predictors of tumor response to anti-epidermal growth factor receptor (EGFR) monoclonal antibody agents in metastatic colorectal cancer have reported inconsistent results. We performed a systematic review of studies from 1990 to September 2015, followed by random-effects meta-analyses for polymorphisms examined in at least three studies. Of 87 studies, 40 passed the criteria for systematic review and 23 for meta-analysis. The polymorphisms suitable for meta-analysis were CCND1 (rs17852153), COX2 (rs20417), EGF (rs4444903), EGFR (rs712829, rs11543848, 3'UTR CA repeat), FCGR2A (rs1801274), FCGR3A (rs396991), IL8 (rs4073), KRAS (rs61764370) and VEGFA (rs3025039)...
November 29, 2016: Pharmacogenomics Journal
https://www.readbyqxmd.com/read/27896475/an-exploratory-association-of-polymorphisms-in-angiogenesis-related-genes-with-susceptibility-clinical-response-and-toxicity-in-gastrointestinal-stromal-tumors-receiving-sunitinib-after-imatinib-failure
#6
Gloria Ravegnini, Margherita Nannini, Corrado Zenesini, Vittorio Simeon, Giulia Sammarini, Milena Urbini, Lidia Gatto, Maristella Saponara, Guido Biasco, Maria A Pantaleo, Nicola Venturoli, Patrizia Hrelia, Sabrina Angelini
The angiogenic pathway plays a pivotal role in tumor growth, invasiveness and metastasis. The most important actors in the angiogenic pathway are VEGFA and its receptors VEGFR1, 2 and 3. These genes are polymorphic, and the presence of single nucleotide polymorphisms may result in angiogenic deregulation. Herein, we hypothesized that germline variants may affect sunitinib efficacy (TTP and OS) and/or toxicity. Therefore, we investigated 19 polymorphisms, in four genes, in 54 GIST patients, treated with second-line sunitinib and 147 healthy controls...
November 28, 2016: Angiogenesis
https://www.readbyqxmd.com/read/27888067/allele-and-genotype-frequencies-of-polymorphisms-in-cytokine-genes-in-ethnic-russian-individuals-from-moscow-russia
#7
Alexandra Shadrina, Elena Voronina, Igor Zolotukhin, Maxim Filipenko
Two hundred and twenty eight ethnic Russian individuals from Moscow, Russia, were genotyped at 14 single nucleotide polymorphisms CCL2 A-2578G; VEGFA C-2578A, G-634C, and C+936T; TNF G+419A and G-308A; IL1A G-889A; IL1RN T+1018C; IL6 G-174C and G-572C; IFNG T+874A; IL1B C-511T; IL10 A+1082G; TGFB1 C-509T. Genotypes were determined using real-time polymerase chain reaction with TaqMan probes and polymerase chain reaction followed by melting analysis of dual-labeled probe. Genotype distribution was in accordance with Hardy-Weinberg equilibrium for all studied polymorphisms...
November 22, 2016: Human Immunology
https://www.readbyqxmd.com/read/27877088/aloe-emodin-suppresses-hypoxia-induced-retinal-angiogenesis-via-inhibition-of-hif-1%C3%AE-vegf-pathway
#8
Jianming Wu, Xiao Ke, Wei Wang, Hongcheng Zhang, Na Ma, Wei Fu, Manxi Zhao, Xiaoping Gao, Xiaofeng Hao, Zhirong Zhang
Background: Aloe-emodin (AE) has been reported to possess the antiangiogenic effect on laser induced choroidal neovascularization. AE inhibits the vessel formation in the zebrafish embryos. However, it is still unclear whether AE can alleviate neovascularization. Here, we investigated the inhibitory effect of AE on the hypoxia-induced retinal neovascularization and the possible mechanisms. Methods: We established a vascular endothelial growth factor (VEGF) secretion model under chemical induced hypoxia by exposure of 150 µM CoCl2 to the ARPE-19 cells, then treated the cells with different concentrations of AE (0...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27862217/genome-wide-transcriptome-profiling-of-the-neoplastic-giant-cell-tumor-of-bone-stromal-cells-by-rna-sequencing
#9
Carol Py Lau, Jamie Sl Kwok, Joseph Cc Tsui, Lin Huang, Kevin Y Yang, Stephen Kw Tsui, Shekhar Madhukar Kumta
Giant cell tumor of bone (GCTB) is the most common non-malignant primary bone tumor reported in Hong Kong. Failure of treatment in advanced GCTB with aggressive local recurrence remains a clinical challenge. In order to reveal the molecular mechanism underlying the pathogenesis of this tumor, we aimed to examine the transcriptome profiling of the neoplastic stromal cells of GCTB in this study. RNA-sequencing was performed on three GCTB stromal cell samples and one bone marrow-derived MSC sample and 174 differentially expressed genes (DEGs) were identified between these two cell types...
November 15, 2016: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/27861873/notch-signaling-pathway-regulates-angiogenesis-via-endothelial-cell-in-3d-co-culture-model
#10
Dan Zhao, Changyue Xue, Shiyu Lin, Sirong Shi, Qianshun Li, Mengting Liu, Xiaoxiao Cai, Yunfeng Lin
This study aimed to investigate the role of Notch signaling pathway for angiogenesis in a three-dimensional (3D) collagen gel model with co-culture of adipose-derived stromal cells (ASCs) and endothelial cells (ECs). A 3D collagen gel model was established in vitro by implanting both ASCs from green fluorescent protein-labeled mouse and ECs from red fluorescent protein-labeled mouse, and the phenomena of angiogenesis with Notch signaling inducer Jagged1, inhibitor DAPT and PBS, respectively were observed by confocal laser scanning microscopy...
November 10, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27846231/analysis-of-vegfa-variants-and-changes-in-vegf-levels-underscores-the-contribution-of-vegf-to-polycystic-ovary-syndrome
#11
Wassim Y Almawi, Emily Gammoh, Zainab H Malalla, Safa A Al-Madhi
BACKGROUND: Vascular endothelial growth factor (VEGF) contributes to the pathogenesis of polycystic ovary syndrome (PCOS), and genetic variations in VEGFA gene were suggested to contribute to VEGF secretion and PCOS. AIM: To evaluate the association of altered VEGF levels, stemming from the presence of specific VEGFA variants, with altered risk of PCOS. SUBJECTS AND METHODS: Retrospective case-control study, performed between 2012-2015. Study subjects comprised 382 women with PCOS, and 393 control subjects...
2016: PloS One
https://www.readbyqxmd.com/read/27842992/systematic-review-and-meta-analysis-of-genetic-association-studies-in-idiopathic-recurrent-spontaneous-abortion
#12
Nina Pereza, Saša Ostojić, Miljenko Kapović, Borut Peterlin
OBJECTIVES: 1) To perform the first comprehensive systematic review of genetic association studies (GASs) in idiopathic recurrent spontaneous abortion (IRSA); 2) to analyze studies according to recurrent spontaneous abortion (RSA) definition and selection criteria for patients and control subjects; and 3) to perform meta-analyses for the association of candidate genes with IRSA. DESIGN: Systematic review and meta-analysis. SETTING: Not applicable...
November 11, 2016: Fertility and Sterility
https://www.readbyqxmd.com/read/27842724/uncovering-potential-key-genes-associated-with-the-pathogenesis-of-asthma-a-microarray-analysis-of-asthma-relevant-tissues
#13
Y Guan, X Jin, X Liu, Y Huang, M Wang, X Li
BACKGROUND: The present study aimed to discover more potential genes associated with the pathogenesis of asthma. METHODS: The microarray data of GSE67940 was downloaded from the Gene Expression Omnibus database. Differentially expressed genes (DEGs) were identified in bronchial alveolar lavage cells from patients with mild-moderate asthma (notSA) and severe asthma (SA) compared with normal controls (NC), respectively. Functional and pathway enrichment analysis, protein-protein interaction (PPI) network analysis were performed upon the identified up- and down-regulated DEGs...
November 11, 2016: Allergologia et Immunopathologia
https://www.readbyqxmd.com/read/27835972/the-association-of-functional-polymorphisms-in-genes-encoding-growth-factors-for-endothelial-cells-and-smooth-muscle-cells-with-the-severity-of-coronary-artery-disease
#14
Tadeusz Osadnik, Joanna Katarzyna Strzelczyk, Andrzej Lekston, Rafał Reguła, Kamil Bujak, Martyna Fronczek, Marcin Gawlita, Małgorzata Gonera, Jarosław Wasilewski, Bożena Szyguła-Jurkiewicz, Marek Gierlotka, Mariusz Gąsior
BACKGROUND: Despite the important roles of vascular smooth muscle cells and endothelial cells in atherosclerotic lesion formation, data regarding the associations of functional polymorphisms in the genes encoding growth factors with the severity of coronary artery disease (CAD) are lacking. The aim of the present study is to analyze the relationships between functional polymorphisms in genes encoding basic fibroblast growth factor (bFGF, FGF2), epidermal growth factor (EGF), insulin-like growth factor-1 (IGF-1), platelet derived growth factor-B (PDGFB), transforming growth factor-β1 (TGF-β1) and vascular endothelial growth factor A (VEGF-A) and the severity of coronary atherosclerosis in patients with stable CAD undergoing their first coronary angiography...
November 11, 2016: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/27833078/dapper-homolog-1-alpha-suppresses-metastasis-ability-of-gastric-cancer-through-inhibiting-planar-cell-polarity-pathway
#15
Yuegeng Liu, Jingwan Zhang, Weifang Yu, Xiaoming Zhang, Guiqi Wang, Zengren Zhao
Dapper homolog 1 alpha (DACT1α) is a member of DACT family and an important regulator in the planar cell polarity pathway. We aim to clarify its functional role in metastasis ability of gastric cancer. DACT1α was silenced in all gastric cancer cell lines (8/8), but expressed in normal gastric tissue. Ectopic expression of DACT1α in silenced gastric cancer cell lines (AGS, BGC823 and MGC803) by stable transfection significantly suppressed cancer cell spreading (P < 0.05), migration (P < 0.01) and invasion (P < 0...
November 9, 2016: Oncotarget
https://www.readbyqxmd.com/read/27832807/sex-specific-variation-in-signaling-pathways-and-gene-expression-patterns-in-human-leukocytes-in-response-to-endotoxin-and-exercise
#16
Asghar Abbasi, Rodolfo de Paula Vieira, Felix Bischof, Michael Walter, Masoud Movassaghi, Nicole C Berchtold, Andreas M Niess, Carl W Cotman, Hinnak Northoff
BACKGROUND: While exercise effects on the immune system have received increasing attention in recent years, it remains unclear to what extent gender and fluctuations in sex hormones during menstrual cycle influence immunological responses to exercise. METHODS: We investigated mRNA changes induced through exhaustive exercise (half-marathon; pre-exercise and post-exercise [30 min, 3 h, 24 h] on whole blood cultures ± lipopolysaccharide [LPS] [1 h]) with a specific focus on sex differences (men vs women in luteal phase) as an extension of our previous study...
November 10, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27827416/obesity-induced-kidney-injury-is-attenuated-by-amelioration-of-aberrant-phd2-activation-in-proximal-tubules
#17
Koji Futatsugi, Hirobumi Tokuyama, Shinsuke Shibata, Makiko Naitoh, Takeshi Kanda, Hitoshi Minakuchi, Shintaro Yamaguchi, Koichi Hayashi, Yoji Andrew Minamishima, Motoko Yanagita, Shu Wakino, Hiroshi Itoh
The involvement of tissue ischemia in obesity-induced kidney injury remains to be elucidated. Compared with low fat diet (LFD)-mice, high fat diet (HFD)-fed mice became obese with tubular enlargement, glomerulomegaly and peritubular capillary rarefaction, and exhibited both tubular and glomerular damages. In HFD-fed mice, despite the increase in renal pimonidazole-positive areas, the expressions of the hypoxia-responsive genes such as Prolyl-hydroxylase PHD2, a dominant oxygen sensor, and VEGFA were unchanged indicating impaired hypoxic response...
November 9, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27821306/intrafibrillar-silicified-collagen-scaffold-modulates-monocyte-to-promote-cell-homing-angiogenesis-and-bone-regeneration
#18
Jin-Long Sun, Kai Jiao, Li-Na Niu, Yang Jiao, Qun Song, Li-Juan Shen, Franklin R Tay, Ji-Hua Chen
The immunomodulatory functions of monocytes are increasingly being recognized. Silicified collagen scaffolds (SCSs), produced by infiltrating collagen matrices with intrafibrillar amorphous silica, exhibit osteogenic and angiogenic potential and are promising candidates in tissue engineering. Here, we demonstrate that SCS promotes in situ bone regeneration and angiogenesis via monocyte immunomodulation. Increased numbers of TRAP-positive monocytes, nestin-positive bone marrow stromal cells (BMSCs) and CD31-positive and endomucin-positive new vessels can be identified from new bone formation regions in a murine calvarial defect model...
October 31, 2016: Biomaterials
https://www.readbyqxmd.com/read/27819721/mir-1-association-with-cell-proliferation-inhibition-and-apoptosis-in-vestibular-schwannoma-by-targeting-vegfa
#19
S L Li, X H Ma, J F Ji, H Li, W Liu, F Z Lu, S T Wu, Y Zhang
A growing body of research has demonstrated the tumor suppressive function of microRNA (miR)-1 in many cancers. Our study aimed to investigate its role in vestibular schwannoma (VS). We examined miR-1 expression in 95 VS specimens and 79 normal vestibular nerves using quantitative real-time polymerase chain reaction. Moreover, miR-1 mimics, miR-1 inhibitors, and negative control oligonucleotides were transfected into HEI-193 human VS cells to investigate the functional significance of miR-1 expression in this condition at a cellular level...
November 3, 2016: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/27818937/depot-specific-differences-in-angiogenic-capacity-of-adipose-tissue-in-differential-susceptibility-to-diet-induced-obesity
#20
Mun-Gyu Song, Hye-Jin Lee, Bo-Yeong Jin, Ruth Gutierrez-Aguilar, Kyung-Ho Shin, Sang-Hyun Choi, Sung Hee Um, Dong-Hoon Kim
OBJECTIVE: Adipose tissue (AT) expansion requires AT remodeling, which depends on AT angiogenesis. Modulation of AT angiogenesis could have therapeutic promise for the treatment of obesity. However, it is unclear how the capacity of angiogenesis in each adipose depot is affected by over-nutrition. Therefore, we investigated the angiogenic capacity (AC) of subcutaneous and visceral fats in lean and obese mice. METHODS: We compared the AC of epididymal fat (EF) and inguinal fat (IF) using an angiogenesis assay in diet-induced obese (DIO) mice and diet-resistant (DR) mice fed a high-fat diet (HFD)...
November 2016: Molecular Metabolism
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