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https://www.readbyqxmd.com/read/28101243/mir-199a-5p-regulates-hif-1%C3%AE-and-osgin2-and-its-expression-is-correlated-to-soft-tissue-sarcoma-patients-outcome
#1
Jacqueline Keßler, Swetlana Rot, Matthias Bache, Matthias Kappler, Peter Würl, Dirk Vordermark, Helge Taubert, Thomas Greither
Soft tissue sarcomas are a heterogeneous group of malignant neoplasms of mesenchymal origin. Partly due to hypoxia, an aggressive and radioresistant phenotype frequently develops, resulting in poorer patient outcome. microRNAs (miRNAs) are tiny, non-coding regulators of gene expression and in situations of cellular stress situations may predict clinical progression and patient outcome. In the present study, hypoxia-associated miR-199a-5p expression in 96 soft tissue sarcoma samples was analysed by reverse transcription-quantitative polymerase chain reaction and associations between miR-199a-5p expression and patient clinicopathological characteristics and survival were measured...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28100332/-expression-and-significance-of-mtor-4ebp1-hif-1%C3%AE-vegf-signaling-pathway-in-lung-tissues-of-asthmatic-mice
#2
Li Wang, Yan-Li Zhang, Xiu-Fang Wang, Zhe Song, Wei Wang
OBJECTIVE: To study the expression and significance of the mammalian target of rapamycin (mTOR)/eukaryote initiating factor 4E binding protein 1(4EBP1)/hypoxia inducible factor-1α (HIF-1α)/vascular endothelial growth factor (VEGF) signaling pathway in asthmatic mice. METHODS: Forty SPF level 6-8 week-old female Balb/C mice were randomly divided into control, asthma, budesonide and mTOR inhibitor (rapamycin) intervention groups (n=10 each). The asthmatic mouse model was prepared via OVA induction and challenge test...
January 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28097093/vascular-endothelial-growth-factor-suppresses-tnfsf15-production-in-endothelial-cells-by-stimulating-mir-31-and-mir-20a-expression-via-activation-of-akt-and-erk-signals
#3
Hui-Ting Deng, Hai-Lin Liu, Bei-Bei Zhai, Kun Zhang, Guo-Ce Xu, Xue-Mei Peng, Qiang-Zhe Zhang, Lu-Yuan Li
Tumor necrosis factor superfamily-15 (TNFSF15; VEGI; TL1A) is a negative modulator of angiogenesis for blood vessel homeostasis and is produced by endothelial cells in a mature vasculature. It is known to be downregulated by vascular endothelial growth factor (VEGF), a major regulator of neovascularization but the mechanism of this interaction is unclear. Here we report that VEGF is able to stimulate the production of two microRNAs, miR-20a and miR-31, which directly target the 3'-UTR of TNFSF15. Additionally, we show that two VEGF-stimulated cell growth signals, Erk and Akt, are responsible for promoting the expression of miR-20a and miR-31...
January 2017: FEBS Open Bio
https://www.readbyqxmd.com/read/28095381/a-single-oral-dose-of-geranylgeranylacetone-upregulates-vascular-endothelial-growth-factor-and-protects-against-kainic-acid-induced-neuronal-cell-death-involvement-of-the-phosphatidylinositol-3-kinase-akt-pathway
#4
Yukari Kawasaki, Minoru Fujiki, Susumu Uchida, Masaki Morishige, Yasutomo Momii, Keisuke Ishii
BACKGROUND: Previous studies demonstrated the cytoprotective effect of geranylgeranylacetone (GGA), a heat shock protein inducer, against ischemic insult or kainic acid (KA)-induced neuronal cell death. Phosphatidylinositol-3 kinase (PI3K)/Akt is thought to be an important factor that mediates neuroprotection. However, the signaling pathways in the brain in vivo after oral GGA administration remain unclear. METHODS: We measured and compared hippocampal neuron density to investigate the effect of GGA on KA-induced cell death in rats...
January 18, 2017: Pathobiology: Journal of Immunopathology, Molecular and Cellular Biology
https://www.readbyqxmd.com/read/28092822/combination-of-everolimus-with-sorafenib-for-solid-renal-tumors-in-tsc2-mice-is-superior-to-everolimus-alone
#5
Jian Yang, Paulina A Samsel, Kalin Narov, Ashley Jones, Daniel Gallacher, John Gallacher, Julian R Sampson, Ming Hong Shen
Tuberous sclerosis (TSC) is an inherited tumor syndrome caused by mutations in TSC1 or TSC2 that lead to aberrant activation of mTOR and development of tumors in multiple organs including the kidneys. The mTOR inhibitors rapamycin and everolimus (rapalogs) have demonstrated clinical efficacy in treating TSC-associated tumors including renal angiomyolipomas. However, tumor responses are usually only partial, and regrowth occurs after drug withdrawal. TSC-associated tumors are highly vascular, and TSC patients with renal angiomyolipomas have elevated levels of circulating vascular endothelial growth factor (VEGF) A and VEGFD...
January 13, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28086962/inhibitory-effects-of-serum-from-sepsis-patients-on-epithelial-cell-migration-in-vitro-a-case-control-study
#6
Henna Jaurila, Vesa Koivukangas, Marjo Koskela, Fiia Gäddnäs, Sirpa Salo, Johanna Korvala, Maija Risteli, Toni Karhu, Karl-Heinz Herzig, Tuula Salo, Tero I Ala-Kokko
BACKGROUND: Sepsis delays wound re-epithelialization. In this study we explored the effect of human sepsis sera as well as the effects of cytokines, growth factors and exosomes of sepsis sera treated normal fibroblasts (NF) on keratinocyte migration and proliferation in vitro. METHODS: Serum samples were taken on days 1, 4, and 9 from 44 patients diagnosed with severe sepsis, and from 14 matching healthy controls. We evaluated the effects of sepsis serum with or without TNF-α, EGF, EGF receptor inhibitor or exosomes of sepsis sera treated NF on human keratinocyte (HaCaT) proliferation (BrdU assay), viability (MTT assay), and migration (horizontal wound healing model)...
January 13, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28078663/inhibition-of-hsp90-exerts-anti-tumor-effect-on-angiosarcoma-involvement-of-vegf-signaling-pathway
#7
S Yamada-Kanazawa, I Kajihara, S Fukushima, M Jinnin, M Masuzawa, M Masuzawa, Y Amoh, D Hoshina, R Abe, H Ihn
BACKGROUND: Angiosarcoma is a rare malignant neoplasm derived from endothelial cells and its prognosis is poor because advanced angiosarcoma is resistant to standard chemotherapy, and new therapies are urgently needed. Heat shock protein 90 (HSP90) has been identified as a molecular chaperone that regulates various cancer-related proteins. Numerous clinical trials are testing the effectiveness of HSP90 inhibitors in various types of malignancies. OBJECTIVES: To investigate the role of HSP90 in the pathogenesis of angiosarcoma and whether inhibition of HSP90 may have anti-tumor activity...
January 12, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28073426/the-prevention-and-treatment-of-retinal-complications-in-diabetes
#8
Susanne Gabriele Schorr, Hans-Peter Hammes, Ulrich Alfons Müller, Heinz-Harald Abholz, Rüdiger Landgraf, Bernd Bertram
BACKGROUND: Microvascular complications of diabetes mellitus can cause retino pathy and maculopathy, which can irreversibly damage vision and lead to blindness. The prevalence of retinopathy is 9-16% in patients with type 2 diabetes and 24-27% in patients with type 1 diabetes. 0.2-0.5% of diabetics are blind. METHODS: The National Disease Management Guideline on the prevention and treatment of retinal complications in diabetes was updated according to recommendations developed by seven scientific medical societies and organizations and by patient representatives and then approved in a formal consensus process...
December 2, 2016: Deutsches Ärzteblatt International
https://www.readbyqxmd.com/read/28071720/polychlorinated-biphenyls-target-notch-dll-and-vegf-r2-in-the-mouse-placenta-and-human-trophoblast-cell-lines-for-their-anti-angiogenic-effects
#9
Satyan Kalkunte, Zheping Huang, Eliana Lippe, Sunil Kumar, Larry W Robertson, Surendra Sharma
The intrauterine environment is particularly vulnerable to environmental exposures. We previously established a mouse model that provided evidence for pregnancy complications and placental anti-angiogenesis in response to Aroclor 1254 (A-1254), a mixture of polychlorinated biphenyls (PCBs). Importantly, these effects were observed in IL-10(-/-), but not wild type, mice, suggesting that IL-10 deficiency predisposes to pregnancy disruptive effects of environmental toxicants. However, the mechanisms by which PCBs cause anti-angiogenic effects are unclear...
January 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28062977/angiopoietin-pathway-gene-expression-associated-with-poor-breast-cancer-survival
#10
Rajesh Ramanathan, Amy L Olex, Mikhail Dozmorov, Harry D Bear, Leopoldo Jose Fernandez, Kazuaki Takabe
PURPOSE: Angiogenesis is one of the hallmarks of cancer and is essential for cancer progression and metastasis. However, clinical trials with vascular endothelial growth factor (VEGF) pathway inhibitors have failed to show overall survival benefit in breast cancer. Targeted therapy against the angiopoietin pathway, a downstream angiogenesis cascade, could be effective in breast cancer. This study investigates the association of angiopoietin pathway gene expression with breast cancer survival using a "big data" approach employing RNA sequencing data from The Cancer Genome Atlas (TCGA)...
January 6, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28061477/autocrine-vegf-signaling-promotes-cell-proliferation-through-a-plc-dependent-pathway-and-modulates-apatinib-treatment-efficacy-in-gastric-cancer
#11
Yi Lin, Ertao Zhai, Bing Liao, Lixia Xu, Xinhua Zhang, Sui Peng, Yulong He, Shirong Cai, Zhirong Zeng, Minhu Chen
BACKGROUND: Tumor cells produce vascular endothelial growth factor (VEGF) which interact with the membrane or cytoplasmic VEGF receptors (VEGFRs) to promote cell growth in an angiogenesis-independent fashion. Apatinib, a highly selective VEGFR2 inhibitor, is the only effective drug for patients with terminal gastric cancer (GC) who have no other chemotherapeutic options. However, its treatment efficacy is still controversy and the mechanism behind remains undetermined. In this study, we aimed to investigate the role of autocrine VEGF signaling in the growth of gastric cancer cells and the efficacy of Apatinib treatment...
January 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28060586/evidence-based-treatment-of-diabetic-macular-edema
#12
Rasha Barham, Hala El Rami, Jennifer K Sun, Paolo S Silva
Diabetes mellitus is a chronic disease that affects 415 million people worldwide. Despite treatment advances, diabetic eye disease remains a leading cause of vision loss worldwide. Diabetic macular edema (DME) is a common cause of vision loss in diabetic patients. The pathophysiology is complex and involves multiple pathways that ultimately lead to central retinal thickening and, if untreated, visual loss. First-line treatment of DME has evolved from focal/grid laser established by the Early Treatment of Diabetic Retinopathy Study (ETDRS) to intravitreous pharmacologic therapy...
2017: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/28059487/%C3%AE-tocopheryl-phosphate-induces-vegf-expression-via-cd36-pi3k%C3%AE-in-thp-1-monocytes
#13
Jean-Marc Zingg, Angelo Azzi, Mohsen Meydani
The CD36 scavenger receptor binds several ligands and mediates ligand uptake and ligand-dependent signal transduction and gene expression, events that may involve CD36 internalization. Here we show that CD36 internalization in THP-1 monocytes is triggered by α-tocopherol (αT) and more strongly by α-tocopheryl phosphate (αTP) and EPC-K1, a phosphate diester of αTP and L-ascorbic acid. αTP-triggered CD36 internalization is prevented by the specific covalent inhibitor of selective lipid transport by CD36, sulfo-N-succinimidyl oleate (SSO)...
January 6, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28057017/the-brain-penetrating-cxcr4-antagonist-prx177561-increases-the-antitumor-effects-of-bevacizumab-and-sunitinib-in-preclinical-models-of-human-glioblastoma
#14
Giovanni Luca Gravina, Andrea Mancini, Francesco Marampon, Alessandro Colapietro, Simona Delle Monache, Roberta Sferra, Flora Vitale, Peter J Richardson, Lee Patient, Stephen Burbidge, Claudio Festuccia
BACKGROUND: Glioblastoma recurrence after treatment with the anti-vascular endothelial growth factor (VEGF) antibody bevacizumab is characterized by a highly infiltrative and malignant behavior that renders surgical excision and chemotherapy ineffective. It has been demonstrated that anti-VEGF/VEGFR therapies control the invasive phenotype and that relapse occurs through the increased activity of CXCR4. We therefore hypothesized that combining bevacizumab or sunitinib with the novel CXCR4 antagonist, PRX177561, would have superior antitumor activity...
January 5, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28056899/pge2-promotes-breast-cancer-associated-lymphangiogenesis-by-activation-of-ep4-receptor-on-lymphatic-endothelial-cells
#15
Pinki Nandi, Gannareddy V Girish, Mousumi Majumder, Xiping Xin, Elena Tutunea-Fatan, Peeyush K Lala
BACKGROUND: Lymphatic metastasis, facilitated by lymphangiogenesis is a common occurrence in breast cancer, the molecular mechanisms remaining incompletely understood. We had earlier shown that cyclooxygenase (COX)-2 expression by human or murine breast cancer cells promoted lymphangiogenesis and lymphatic metastasis by upregulating VEGF-C/D production by tumor cells or tumor-associated macrophages primarily due to activation of the prostaglandin receptor EP4 by endogenous PGE2. It is not clear whether tumor or host-derived PGE2 has any direct effect on lymphangiogenesis, and if so, whether EP4 receptors on lymphatic endothelial cells (LEC) play any role...
January 5, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28055102/galectin-3-inhibition-by-a-small-molecule-inhibitor-reduces-both-pathological-corneal-neovascularization-and-fibrosis
#16
Wei-Sheng Chen, Zhiyi Cao, Hakon Leffler, Ulf J Nilsson, Noorjahan Panjwani
Purpose: Corneal neovascularization and scarring commonly lead to significant vision loss. This study was designed to determine whether a small-molecule inhibitor of galectin-3 can inhibit both corneal angiogenesis and fibrosis in experimental mouse models. Methods: Animal models of silver nitrate cautery and alkaline burn were used to induce mouse corneal angiogenesis and fibrosis, respectively. Corneas were treated with the galectin-3 inhibitor, 33DFTG, or vehicle alone and were processed for whole-mount immunofluorescence staining and Western blot analysis to quantify the density of blood vessels and markers of fibrosis...
January 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28054548/nanosecond-pulsed-electric-fields-enhance-the-anti-tumour-effects-of-the-mtor-inhibitor-everolimus-against-melanoma
#17
Jie Dai, Shan Wu, Yan Kong, Zhihong Chi, Lu Si, Xinan Sheng, Chuanliang Cui, Jing Fang, Jue Zhang, Jun Guo
The PI3K/mTOR/AKT pathway is activated in most melanomas, but mTOR inhibitors used singly have limited activity against advanced melanomas. The application of nanosecond pulsed electric fields (nsPEFs) is a promising cancer therapy approach. In this study, we evaluated the synergistic anti-tumour efficacy of the mTOR inhibitor everolimus in conjunction with nsPEFs against melanoma. The combined treatment of nsPEFs and everolimus gradually decreased cell growth concurrent with nsPEF intensity. nsPEFs alone or combined with everolimus could promote melanoma cell apoptosis, accompanied with a loss in cellular mitochondrial membrane potential and an increase in Ca(2+) levels...
January 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28054366/the-role-of-molecular-pain-biomarkers-in-temporomandibular-joint-internal-derangement
#18
REVIEW
Malin Ernberg
There is evidence that low-grade inflammation may be responsible for pain and development of degenerative changes in temporomandibular joint internal derangement. This article reviews the current knowledge of the molecular mechanisms behind TMJ internal derangements. A non-systematic search was carried out in PubMed, Embase, and the Cochrane library for studies regarding pathophysiological mechanisms behind internal derangements focusing on pain mediating inflammatory and cartilage degrading molecules. Recent data suggests that release of cytokines may be the key event for pain and cartilage destruction in TMJ internal derangements...
January 5, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28052321/canonical-hedgehog-signaling-regulates-hepatic-stellate-cell-mediated-angiogenesis-in-liver-fibrosis
#19
Feng Zhang, Meng Hao, Huanhuan Jin, Zhen Yao, Naqi Lian, Li Wu, Jiangjuan Shao, Anping Chen, Shizhong Zheng
BACKGROUND AND PURPOSE: Hepatic stellate cells (HSCs) are liver-specific pericytes regulating angiogenesis during liver fibrosis. We aimed to elucidate the mechanisms by which hedgehog signaling regulated HSC angiogenic properties and to validate the therapeutic implications. EXPERIMENTAL APPROACH: Rats and mice were intoxicated with carbon tetrachloride for in vivo evaluation of hepatic angiogenesis and fibrotic injury. Diversified molecular approaches including real-time PCR, Western blot, luciferase reporter assay, chromatin immunoprecipitation, electrophoretic mobility shift assay, and co-immunoprecipitation were used to investigate the underlying mechanisms in vitro...
January 4, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28049908/a-novel-clerodane-diterpene-from-vitex-cofassus
#20
Faradiba Abdul Rasyid, Shuichi Fukuyoshi, Hirokazu Ando, Katsunori Miyake, Toshiyuki Atsumi, Tetsuo Fujie, Yohei Saito, Masuo Goto, Tomohiro Shinya, Masayuki Mikage, Yohei Sasaki, Kyoko Nakagawa-Goto
New clerodane diterpene, 16-hydroxy-pentandralactone (1) and known diterpene acuminolide (2) were isolated from the methanol extract of Vitex cofassus leaves. The chemical structure and the absolute configuration of 1 were determined by MS, NMR and electron circular dichroism (ECD) experiments. The isolated compounds were evaluated for their antiproliferative activities against a panel of human tumor cell lines, including a multidrug-resistant (MDR) cell line. Both compounds showed potent antiproliferative activities against all the tested cell lines with IC50 values of 5...
2017: Chemical & Pharmaceutical Bulletin
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