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https://www.readbyqxmd.com/read/29156827/hepatitis-c-virus-core-protein-potentiates-proangiogenic-activity-of-hepatocellular-carcinoma-cells
#1
Yu-Yun Shao, Min-Shu Hsieh, Han-Yu Wang, Yong-Shi Li, Hang Lin, Hung-Wei Hsu, Chung-Yi Huang, Chih-Hung Hsu, Ann-Lii Cheng
Increased angiogenic activity has been demonstrated in hepatitis C virus (HCV)-related hepatocellular carcinoma (HCC), but the mechanism was unclear. To study the role of HCV core protein, we used tube formation and Matrigel plug assays to assess the proangiogenic activity of an HCC cell line, HuH7, and 2 of its stable clones-HuH7-core-high and HuH7-core-low, with high and low HCV core protein expression, respectively. In both assays, HuH7-core-high and HuH7-core-low cells dose-dependently induced stronger angiogenesis than control cells...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156788/modulation-of-hif-1%C3%AE-and-stat3-signaling-contributes-to-anti-angiogenic-effect-of-yc-1-in-mice-with-liver-fibrosis
#2
Tzung-Yan Lee, Yann-Lii Leu, Chorng-Kai Wen
Hypoxia has been shown to have a role in the pathogenesis of several forms of liver disease. The aim of the study was to evaluate the mechanisms of HIF-1α inhibitor, YC-1, during bile duct ligation (BDL)-induced liver fibrosis in mice. Liver fibrosis was induced in mice, and YC-1 was then given intraperitoneally (50 mg/kg) once daily following 5 days. Liver injuries mice that were treated with YC-1 showed improved inflammatory response and diminished angiogenesis and hepatic fibrosis. YC-1 treatment inhibited liver neutrophil infiltration, while a decreased in TNF-α signaling as well as macrophage aggregation...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29155741/directed-differentiation-of-primitive-and-definitive-hematopoietic-progenitors-from-human-pluripotent-stem-cells
#3
Carissa Dege, Christopher M Sturgeon
One of the major goals for regenerative medicine is the generation and maintenance of hematopoietic stem cells (HSCs) derived from human pluripotent stem cells (hPSCs). Until recently, efforts to differentiate hPSCs into HSCs have predominantly generated hematopoietic progenitors that lack HSC potential, and instead resemble yolk sac hematopoiesis. These resulting hematopoietic progenitors may have limited utility for in vitro disease modeling of various adult hematopoietic disorders, particularly those of the lymphoid lineages...
November 1, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29152905/the-gait-translational-control-system
#4
REVIEW
Abul Arif, Peng Yao, Fulvia Terenzi, Jie Jia, Partho Sarothi Ray, Paul L Fox
The interferon (IFN)-γ-activated inhibitor of translation (GAIT) system directs transcript-selective translational control of functionally related genes. In myeloid cells, IFN-γ induces formation of a multiprotein GAIT complex that binds structural GAIT elements in the 3'-untranslated regions (UTRs) of multiple inflammation-related mRNAs, including ceruloplasmin and VEGF-A, and represses their translation. The human GAIT complex is a heterotetramer containing glutamyl-prolyl tRNA synthetase (EPRS), NS1-associated protein 1 (NSAP1), ribosomal protein L13a (L13a), and glyceraldehyde-3-phosphate dehydrogenase (GAPDH)...
November 20, 2017: Wiley Interdisciplinary Reviews. RNA
https://www.readbyqxmd.com/read/29152141/notch1-ablation-radiosensitizes-glioblastoma-cells
#5
Na Han, Guangyuan Hu, Lei Shi, Guoxian Long, Lin Yang, Qingsong Xi, Qiuyun Guo, Jianhua Wang, Zhen Dong, Mengxian Zhang
Broad specific Notch1 inhibitors suppress glioblastoma multiforme (GBM) growth but have significant gastrointestinal toxicities. Here, we examined Notch1 expression in GBM tissue specimens and its correlation with the overall survival (OS) of GBM patients. Furthermore, using the CRISPR/Cas9 system, we investigated the effects of Notch1 downregulation on clonogenic growth and angiogenesis of GBM cells and xenografts. Immunohistochemistry showed positive Notch1 expression in 71% (49/69) of GBM tissues. Our multivariate Cox regression analysis further revealed that Notch1 expression was an independent adverse prognostic factor for OS...
October 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/29150732/dimethylarginine-dimethylaminohydrolase-1-ddah1-is-frequently-upregulated-in-prostate-cancer-and-its-overexpression-conveys-tumor-growth-and-angiogenesis-by-metabolizing-asymmetric-dimethylarginine-adma
#6
Karthik Reddy Kami Reddy, Chandrashekhar Dasari, Divya Duscharla, Bhukya Supriya, N Sai Ram, M V Surekha, Jerald Mahesh Kumar, Ramesh Ummanni
Tissue microarray analysis confirmed higher dimethylarginine dimethylaminohydrolase-1 (DDAH1) expression in prostate cancer (PCa) compared to benign and normal prostate tissues. DDAH1 regulates nitric oxide (NO) production by degrading endogenous nitric oxide synthase (NOS) inhibitor, asymmetric dimethylarginine (ADMA). This study examined whether DDAH1 has any physiological role in PCa progression. Using overexpression of DDAH1 in PCa (PC3 and LNCaP) cell lines, we found that DDAH1 promotes cell proliferation, migration and invasion by lowering ADMA levels, as well as increasing NO production...
November 17, 2017: Angiogenesis
https://www.readbyqxmd.com/read/29150606/loss-of-hif-1%C3%AE-in-natural-killer-cells-inhibits-tumour-growth-by-stimulating-non-productive-angiogenesis
#7
Ewelina Krzywinska, Chahrazade Kantari-Mimoun, Yann Kerdiles, Michal Sobecki, Takayuki Isagawa, Dagmar Gotthardt, Magali Castells, Johannes Haubold, Corinne Millien, Thomas Viel, Bertrand Tavitian, Norihiko Takeda, Joachim Fandrey, Eric Vivier, Veronika Sexl, Christian Stockmann
Productive angiogenesis, a prerequisite for tumour growth, depends on the balanced release of angiogenic and angiostatic factors by different cell types within hypoxic tumours. Natural killer (NK) cells kill cancer cells and infiltrate hypoxic tumour areas. Cellular adaptation to low oxygen is mediated by Hypoxia-inducible factors (HIFs). We found that deletion of HIF-1α in NK cells inhibited tumour growth despite impaired tumour cell killing. Tumours developing in these conditions were characterised by a high-density network of immature vessels, severe haemorrhage, increased hypoxia, and facilitated metastasis due to non-productive angiogenesis...
November 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/29149180/roles-of-vegf-flt-1-signaling-in-malignant-behaviors-of-oral-squamous-cell-carcinoma
#8
Ajiravudh Subarnbhesaj, Mutsumi Miyauchi, Chea Chanbora, Aki Mikuriya, Phuong Thao Nguyen, Hisako Furusho, Nurina Febriyanti Ayuningtyas, Minoru Fujita, Shigeaki Toratani, Masaaki Takechi, Shumpei Niida, Takashi Takata
BACKGROUND: Vascular endothelial growth factor (VEGF) is a highly specific signaling protein for vascular endothelial cells that plays a critical role in tumor growth and invasion through angiogenesis, and may contribute to cell migration and activation of pre-osteoclasts, osteoclasts and some tumor cells. OBJECTIVES: We aimed to clarify the detailed roles of VEGF-Flt-1 signaling in bone invasion of oral squamous cell carcinoma (OSCC) cells. RESULTS: Forty-two (42) of 54 cases with gingival SCC (77...
2017: PloS One
https://www.readbyqxmd.com/read/29147618/programmed-cell-death-ligands-expression-in-phaeochromocytomas-and-paragangliomas-relationship-with-the-hypoxic-response-immune-evasion-and-malignant-behavior
#9
David J Pinato, James R Black, Sebastian Trousil, Roberto E Dina, Pritesh Trivedi, Francesco A Mauri, Rohini Sharma
The hypoxic response underlies the pathogenesis and malignant behavior of PCC/PGL. Regulation of PD-1 receptor-ligand signaling, a therapeutically actionable driver of the anti-tumor immune response, is a hypoxic-driven trait across malignancies. We evaluated the prognostic role of PD ligands in association with biomarkers of hypoxia and angiogenesis in patients with PCC/PGL. Tissue microarrays sections including consecutive cases diagnosed between 1983-2011 were stained for PD-L1 and 2, hypoxia inducible factor 1a (Hif-1a), Carbonic Anhydrase IX (CaIX), Vascular Endothelial Growth Factor-A (VEGF-A)...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/29146648/economic-evaluation-of-an-e-mental-health-intervention-for-patients-with-retinal-exudative-diseases-who-receive-intraocular-anti-vegf-injections-e-pseye-protocol-for-a-randomised-controlled-trial
#10
Hilde P A van der Aa, Ger H M B van Rens, Frank D Verbraak, Machteld Bosscha, Marc A Koopmanschap, Hannie C Comijs, Pim Cuijpers, Ruth M A van Nispen
INTRODUCTION: Because of the great potential of vascular endothelial growth factor inhibitors (anti-VEGF) for retinal exudative diseases, an increased number of patients receives this treatment. However, during this treatment, patients are subjected to frequent invasive intravitreal injections, and the effects on reversing the process of vision loss are uncertain, which may have negative consequences for patients' mental health. One in three patients experience at least mild symptoms of depression/anxiety...
November 15, 2017: BMJ Open
https://www.readbyqxmd.com/read/29146618/management-of-adverse-events-associated-with-cabozantinib-therapy-in-renal-cell-carcinoma
#11
REVIEW
Manuela Schmidinger, Romano Danesi
Cabozantinib was recently approved for the treatment of advanced renal cell carcinoma (RCC) after treatment with vascular endothelial growth factor (VEGF)-targeted therapy. Cabozantinib is a multikinase inhibitor targeting VEGF receptor (VEGFR) 2, mesenchymal-epithelial transition receptor, and "anexelekto" receptor tyrosine kinase. A 60-mg daily dose led to improved overall survival and progression-free survival (PFS) versus everolimus in advanced RCC patients as a second- or later-line treatment in the METEOR trial...
November 16, 2017: Oncologist
https://www.readbyqxmd.com/read/29146554/ingap-pp-effects-on-%C3%AE-cell-mass-and-function-are-related-to-its-positive-effect-on-islet-angiogenesis-and-vegfa-production
#12
Carolina Lisi Román, Bárbara Maiztegui, Héctor Del Zotto, Juan José Gagliardino, Luis Emilio Flores
Our aim was to determine whether islet angiogenesis and VEGFA production/release participate in the mechanism by which INGAP-PP enhances β-cell function and mass. We used two models: a) in vivo (normal rats injected with INGAP-PP for 10 days) and b) in vitro (normal islets cultured for 4 days with INGAP-PP, VEGFA, Rapamycin, and the specific VEGF-Receptor inhibitor, SU5416). INGAP-PP administration enhanced insulin secretion, β-cell mass, islet vascularization, and angiogenesis without affecting glucose homeostasis...
November 13, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/29143774/disrupting-vegf-vegfr1-interaction-de-novo-designed-linear-helical-peptides-to-mimic-the-vegf13-25-fragment
#13
Beatriz Balsera, M Ángeles Bonache, Marie Reille-Seroussi, Nathalie Gagey-Eilstein, Michel Vidal, Rosario González-Muñiz, María Jesús Pérez de Vega
The interaction between vascular endothelial growth factor (VEGF) and its receptors (VEGFR) has important implications in angiogenesis and cancer, which moved us to search for peptide derivatives able to block this protein-protein interaction. In a previous work we had described a collection of linear 13-mer peptides specially designed to adopt helical conformations (Ac-SSEEX⁵ARNX⁸AAX(12)N-NH₂), as well as the evaluation of seven library components for the inhibition of the interaction of VEGF with its Receptor 1 (VEGFR1)...
October 28, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29142602/combined-aspirin-and-apatinib-treatment-suppresses-gastric-cancer-cell-proliferation
#14
Wei Zhang, Yongsheng Tan, Heping Ma
Gastric cancer (GC), one of the types of tumor most prone to malignancy, is characterized by high lethality. Numerous molecular mediators of GC have been identified, including transcription factors, signaling molecules and non-coding RNAs. Recently, inhibition of angiogenesis has emerged as a potential strategy for GC therapy. In the present study, the levels of vascular endothelial growth factor (VEGF), peroxisome proliferator-activated receptor-α (PPARα) and miR-21 in GC patients and individuals without cancer, and the correlation between VEGF and miR-21, and PPARα and miR-21 expression were analyzed...
November 2017: Oncology Letters
https://www.readbyqxmd.com/read/29141865/development-and-plasticity-of-meningeal-lymphatic-vessels
#15
Salli Antila, Sinem Karaman, Harri Nurmi, Mikko Airavaara, Merja H Voutilainen, Thomas Mathivet, Dmitri Chilov, Zhilin Li, Tapani Koppinen, Jun-Hee Park, Shentong Fang, Aleksanteri Aspelund, Mart Saarma, Anne Eichmann, Jean-Léon Thomas, Kari Alitalo
The recent discovery of meningeal lymphatic vessels (LVs) has raised interest in their possible involvement in neuropathological processes, yet little is known about their development or maintenance. We show here that meningeal LVs develop postnatally, appearing first around the foramina in the basal parts of the skull and spinal canal, sprouting along the blood vessels and cranial and spinal nerves to various parts of the meninges surrounding the central nervous system (CNS). VEGF-C, expressed mainly in vascular smooth muscle cells, and VEGFR3 in lymphatic endothelial cells were essential for their development, whereas VEGF-D deletion had no effect...
November 15, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29141249/%C3%AE-catenin-cooperates-with-creb-binding-protein-to-promote-the-growth-of-tumor-cells
#16
Wendan Yu, Liren Li, Fufu Zheng, Wenjing Yang, Shilei Zhao, Chunfang Tian, Wenwen Yin, Yiming Chen, Wei Guo, Lijuan Zou, Wuguo Deng
BACKGROUND/AIMS: β-catenin is an integral component of the canonical Wnt signaling pathway, and its mutations are an autosomal recessive cause of colorectal cancer (CRC), medulloblastoma (MDB), and ovarian cancer. Nevertheless, little is known about its function in lung cancers. METHODS: We first knocked down β-catenin by siRNA to investigate its effects on lung cancer cell proliferation, migration and apoptosis. Then we verified the interaction between β-catenin and CREB binding protein (CBP) by immunofluoresence and co-immunoprecipition assays...
November 15, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29140729/gene-expression-and-gene-associations-during-the-development-of-heart-failure-with-preserved-ejection-fraction-in-the-dahl-salt-sensitive-model-of-hypertension
#17
Jeffrey Yim, Hyokeun Cho, Simon W Rabkin
Gene expression and associations were examined in a model of heart failure with preserved ejection fraction (HFpEF), a condition with minimal effective treatment. Genes with at least two studies showing significant changes in Dahl rat with heart failure were examined by meta-analysis. Significantly increased in expression were iNOS, p47phox, ADM, ANP, OPN, ACE, MCP-1, GP91PHOX, ICAM-1, TGF-β1, CTGF, ET-1, p22phox, ETB, BNP, ETA, MMP13, Col1a1, MMP2, TIMP1, Col3a1, Il-1β, β-MHC, ECE1, MMP14, AGT, and MMP9...
November 15, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/29138868/hdac-inhibitor-lmk%C3%A2-235-promotes-the-odontoblast-differentiation-of-dental-pulp-cells
#18
Zhao Liu, Ting Chen, Qianqian Han, Ming Chen, Jie You, Fuchun Fang, Ling Peng, Buling Wu
The role of dental pulp cells (DPCs) in hard dental tissue regeneration had received increasing attention because DPCs can differentiate into odontoblasts and other tissue‑specific cells. In recent years, epigenetic modifications had been identified to serve an important role in cell differentiation, and histone deacetylase (HDAC) inhibitors have been widely studied by many researchers. However, the effects of HDAC4 and HDAC5 on the differentiation of DPCs and the precise molecular mechanisms remain unclear...
November 14, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29136455/lbh589-inhibits-glioblastoma-growth-and-angiogenesis-through-suppression-of-hif-1%C3%AE-expression
#19
Zhi-Gang Yao, Wen-Huan Li, Fang Hua, Hong-Xia Cheng, Miao-Qing Zhao, Xi-Chao Sun, Ye-Jun Qin, Jia-Mei Li
Glioblastoma (GBM) is an angiogenic malignancy with a highly unfavorable prognosis. Angiogenesis in GBM represents an adaptation to a hypoxic microenvironment and is correlated with tumor growth, invasion, clinical recurrence, and lethality. LBH589 (also called panobinostat) is a histone deacetylase (HDAC) inhibitor with potent antitumor activity. In the current study, we investigated the mechanism and effects of LBH589 on GBM growth and hypoxia-induced angiogenesis in vitro and in vivo. To determine the antitumor and angiogenesis activity and mechanism of LBH589, we used cell proliferations in vitro and GBM xenografts in vivo...
December 1, 2017: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/29132131/il-6-promotes-fsh-induced-vegf-expression-through-jak-stat3-signaling-pathway-in-bovine-granulosa-cells
#20
Meng Yang, Lei Wang, Xurong Wang, Xuezhi Wang, Zhiqiang Yang, Jianxi Li
BACKGROUND/AIMS: Vascular endothelial growth factor (VEGF) has been demonstrated to play a pivotal role in the regulation of angiogenesis in ovarian follicular development, particularly during the preovulatory period. Although numerous studies have shown that interleukin-6 (IL-6) is one of the major inducing factors that regulate the expression of VEGF in non-ovarian cells, whether it involved in regulating the expression of VEGF in normal ovarian granulosa cells is still unknown. The aim of this study was to elucidate the mechanisms underlying the effect of IL-6 on FSH-induced VEGF expression in bovine granulosa cells derived from large follicles...
November 13, 2017: Cellular Physiology and Biochemistry
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