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https://www.readbyqxmd.com/read/28323051/anticancer-and-anti-angiogenic-activities-of-extract-from-actinidia-eriantha-benth-root
#1
Jian-Guo Wu, Li Ma, Shui-Hua Lin, Yan-Bin Wu, Jun Yi, Bin-Jun Yang, Jin-Zhong Wu, Ka-Hing Wong
ETHNOPHARMACOLOGICAL RELEVANCE: The roots of Actinidia eriantha Benth (AER) are commonly used traditional folk medicine for the treatment of gastric carcinoma, nasopharyngeal carcinoma, and breast carcinoma. Besides, the anti-proliferative and immunomodulatory effects of AER polysaccharides on tumor-bearing mice have been reported previously. AIM OF THE STUDY: This work was carried out to investigate the anticancer and anti-angiogenic activities of AER. MATERIALS AND METHODS: The growth inhibitory effects of ethanol extracts from the leaves (EEL), stems (EES) and roots (EER) of A...
March 17, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28319199/a-computational-analysis-of-in-vivo-vegfr-activation-by-multiple-co-expressed-ligands
#2
Lindsay E Clegg, Feilim Mac Gabhann
The splice isoforms of vascular endothelial growth A (VEGF) each have different affinities for the extracellular matrix (ECM) and the coreceptor NRP1, which leads to distinct vascular phenotypes in model systems expressing only a single VEGF isoform. ECM-immobilized VEGF can bind to and activate VEGF receptor 2 (VEGFR2) directly, with a different pattern of site-specific phosphorylation than diffusible VEGF. To date, the way in which ECM binding alters the distribution of isoforms of VEGF and of the related placental growth factor (PlGF) in the body and resulting angiogenic signaling is not well-understood...
March 20, 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28314255/anti-metastatic-efficacy-of-traditional-chinese-medicine-tcm-ginsenoside-conjugated-to-a-vefgr-3-antibody-on-human-gastric-cancer-in-an-orthotopic-mouse-model
#3
Xiaojun Dai, Dongmei Liu, Moxiang Liu, Xiaochun Zhang, Weiming Wang, Feng Jin, Yayun Qian, Xuanyi Wang, Jingjing Zhao, Yongjian Wu, Fangfang Xiong, N A Chang, Y U Sun, Zhijian Yang, Robert M Hoffman, Yanqing Liu
Background/Aim: The aim of the present study was to investigate the efficacy of a traditional Chinese medicine (TCM), VEGFR-3 antibody-conjugated ginsenoside Rg3nanoemulsion (VRIN), targeting lymphangiogenesis, on the inhibition of tumor growth and metastasis in an orthotopic mouse model of human gastric cancer. Materials and Methods: An orthotopic nude-mouse model of gastric cancer was established with the red fluorescent protein (RFP)-expressing human gastric cancer cell line NUGC-4-RFP. The tumor-bearing mice were treated with vehicle (0...
March 2017: Anticancer Research
https://www.readbyqxmd.com/read/28303365/immunoglobulin-like-domain-4-mediated-ligand-independent-dimerization-triggers-vegfr-2-activation-in-huvecs-and-vegfr2-positive-breast-cancer-cells
#4
Sheng Zhang, Xiaoping Gao, Wei Fu, Shengwei Li, Limin Yue
PURPOSE: The extracellular region (EC) of the vascular endothelial growth factor (VEGF) receptor-2 (VEGFR-2) contains seven immunoglobulin-like (Ig-like) domains that are required for specific ligand binding and receptor dimerization. Studies of domain 4-7 deletions and substitutions provided insights into the interaction between receptors in the absence of VEGF. In this study, we investigated the effect of domain 4 in ligand-independent VEGFR-2 dimerization and activation in human vascular endothelial cells and human breast cancer cells...
March 16, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28301910/soluble-fms-like-tyrosine-kinase-1-as-a-link-between-angiogenesis-and-endothelial-dysfunction-in-pediatric-patients-with-%C3%AE-thalassemia-intermedia
#5
Azza Abdel Gawad Tantawy, Amira Abdel Moneam Adly, Eman Abdel Rahman Ismail, Omneya Ibrahim Youssef, Mohamed ElSayed Ali
Endothelial damage has been implicated in the pathogenesis of vascular complications in β-thalassemia intermedia (β-TI). Soluble fms-like tyrosine kinase 1 (sFLT-1) is a member of the vascular endothelial growth factor receptor (VEGFR) family. Soluble fms-like tyrosine kinase 1 is an antiangiogenic protein that induces endothelial dysfunction by adhering to and inhibiting VEGF and placenta growth factor. The aim of this study was to assess the level of sFLT-1 in 35 children and adolescents with β-TI, correlating it with markers of hemolysis and iron overload as well as cardiopulmonary complications...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28292023/green-tea-and-its-anti-angiogenesis-effects
#6
REVIEW
Bahman Rashidi, Mehrnoush Malekzadeh, Mohammad Goodarzi, Aria Masoudifar, Hamed Mirzaei
The development of new blood vessels from a pre-existing vasculature (also known as angiogenesis) is required for many physiological processes including embryogenesis and post-natal growth. However, pathological angiogenesis is also a hallmark of cancer and many ischaemic and inflammatory diseases. The pro-angiogenic members of the VEGF family (vascular endothelial growth factor family), VEGF-A, VEGF-B, VEGF-C, VEGF-D and placental growth factor (PlGF), and the related receptors, VEGFR-1, VEGFR-2 and VEGFR-3 have a central and decisive role in angiogenesis...
March 8, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28290152/vascular-endothelial-growth-factor-isoform-b-stimulates-neurovascular-repair-after-ischemic-stroke-by-promoting-the-function-of-pericytes-via-vascular-endothelial-growth-factor-receptor-1
#7
Noëmie Jean LeBlanc, Revathy Guruswamy, Ayman ElAli
Ischemic stroke triggers endogenous angiogenic mechanisms, which correlates with longer survival in patients. As such, promoting angiogenesis appears to be a promising approach. Experimental studies investigated mostly the potent angiogenic factor vascular endothelial growth factor isoform-A (VEGF-A). However, VEGF-A increases the risk of destabilizing the brain microvasculature, thus hindering the translation of its usage in clinics. An attractive alternative VEGF isoform-B (VEGF-B) was recently reported to act as a survival factor rather than a potent angiogenic factor...
March 14, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28287096/blockade-of-vascular-endothelial-growth-factor-receptors-by-tivozanib-has-potential-anti-tumour-effects-on-human-glioblastoma-cells
#8
Majid Momeny, Farima Moghaddaskho, Narges K Gortany, Hassan Yousefi, Zahra Sabourinejad, Ghazaleh Zarrinrad, Shahab Mirshahvaladi, Haniyeh Eyvani, Farinaz Barghi, Leila Ahmadinia, Mahmoud Ghazi-Khansari, Ahmad R Dehpour, Saeid Amanpour, Seyyed M Tavangar, Leila Dardaei, Amir H Emami, Kamran Alimoghaddam, Ardeshir Ghavamzadeh, Seyed H Ghaffari
Glioblastoma (GBM) remains one of the most fatal human malignancies due to its high angiogenic and infiltrative capacities. Even with optimal therapy including surgery, radiotherapy and temozolomide, it is essentially incurable. GBM is among the most neovascularised neoplasms and its malignant progression associates with striking neovascularisation, evidenced by vasoproliferation and endothelial cell hyperplasia. Targeting the pro-angiogenic pathways is therefore a promising anti-glioma strategy. Here we show that tivozanib, a pan-inhibitor of vascular endothelial growth factor (VEGF) receptors, inhibited proliferation of GBM cells through a G2/M cell cycle arrest via inhibition of polo-like kinase 1 (PLK1) signalling pathway and down-modulation of Aurora kinases A and B, cyclin B1 and CDC25C...
March 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28282869/inhibition-of-vegf-induced-vegfr-2-activation-and-huvec-migration-by-melatonin-and-other-bioactive-indolic-compounds
#9
Ana B Cerezo, Ruth Hornedo-Ortega, M Antonia Álvarez-Fernández, Ana M Troncoso, M Carmen García-Parrilla
Excessive concentrations of vascular endothelial growth factor (VEGF) trigger angiogenesis, which causes complications such as the destabilization of atherosclerotic plaques and increased growth of tumors. This work focuses on the determination of the inhibitory activity of melatonin and other indolic related compounds on VEGF-induced VEGF receptor-2 (VEGFR-2) activation and an approximation to the molecular mechanism underlying the inhibition. Quantification of phosphorylated VEGFR-2 was measured by ELISA...
March 8, 2017: Nutrients
https://www.readbyqxmd.com/read/28279709/vegf-signaling-promotes-vascular-endothelial-differentiation-by-modulating-etv2-expression
#10
Satish Casie Chetty, Megan S Rost, Jacob Ryan Enriquez, Jennifer A Schumacher, Kristina Baltrunaite, Andrea Rossi, Didier Y R Stainier, Saulius Sumanas
Vasculogenesis involves the differentiation of vascular endothelial progenitors de novo from undifferentiated mesoderm, their migration and coalescence to form the major embryonic vessels and the acquisition of arterial or venous identity. Vascular Endothelial Growth Factor (Vegf) signaling plays multiple roles during vascular development. However, its function during embryonic vasculogenesis has been controversial. Previous studies have implicated Vegf signaling in either regulating arteriovenous specification or overall vascular endothelial differentiation...
March 7, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28276433/renal-cell-carcinoma
#11
REVIEW
James J Hsieh, Mark P Purdue, Sabina Signoretti, Charles Swanton, Laurence Albiges, Manuela Schmidinger, Daniel Y Heng, James Larkin, Vincenzo Ficarra
Renal cell carcinoma (RCC) denotes cancer originated from the renal epithelium and accounts for >90% of cancers in the kidney. The disease encompasses >10 histological and molecular subtypes, of which clear cell RCC (ccRCC) is most common and accounts for most cancer-related deaths. Although somatic VHL mutations have been described for some time, more-recent cancer genomic studies have identified mutations in epigenetic regulatory genes and demonstrated marked intra-tumour heterogeneity, which could have prognostic, predictive and therapeutic relevance...
March 9, 2017: Nature Reviews. Disease Primers
https://www.readbyqxmd.com/read/28271280/rcan1-4-regulates-vegfr-2-internalisation-cell-polarity-and-migration-in-human-microvascular-endothelial-cells
#12
Ahmad F Alghanem, Emma L Wilkinson, Maxine S Emmett, Mohammad A Aljasir, Katherine Holmes, Beverley A Rothermel, Victoria A Simms, Victoria L Heath, Michael J Cross
Regulator of calcineurin 1 (RCAN1) is an endogenous inhibitor of the calcineurin pathway in cells. It is expressed as two isoforms in vertebrates: RCAN1.1 is constitutively expressed in most tissues, whereas transcription of RCAN1.4 is induced by several stimuli that activate the calcineurin-NFAT pathway. RCAN1.4 is highly upregulated in response to VEGF in human endothelial cells in contrast to RCAN1.1 and is essential for efficient endothelial cell migration and tubular morphogenesis. Here, we show that RCAN1...
March 7, 2017: Angiogenesis
https://www.readbyqxmd.com/read/28267563/protective-effects-of-angiopoietin-like-4-on-the-blood-brain-barrier-in-acute-ischemic-stroke-treated-with-thrombolysis-in-mice
#13
Bin Zhang, Xiaofeng Xu, Xiuli Chu, Xiaoyang Yu, Yuwu Zhao
AIMS: Given the risk of blood-brain barrier damage (BBB) caused by ischemic and tissue plasminogen activator thrombolysis, the preservation of vascular integrity is important. Angiopoietin-like 4 (ANGPTL4), a protein secreted in hypoxia, is involved in the regulation of vascular permeability. We hypothesized that Angptl4 might exert a protective effect in thrombolysis through stabilizing blood-brain barrier and inhibit hyper-permeability. METHODS: We investigated the role of Angptl4 in stroke using a transient focal cerebral ischemia mouse model...
March 4, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28262119/marsdeniae-tenacissimae-extract-mte-suppresses-cell-proliferation-by-attenuating-vegf-vegfr2-interactions-and-promotes-apoptosis-through-regulating-pkc-pathway-in-human-umbilical-vein-endothelial-cells
#14
Bing-Yu Chen, Dong Chen, Jian-Xin Lyu, Kai-Qiang Li, Meng-Meng Jiang, Jing-Jing Zeng, Xu-Jun He, Ke Hao, Hou-Quan Tao, Xiao-Zhou Mou, You-Min Ying, Wei Zhang, Meng-Hua Zhu, Zhen Wang
Marsdeniae tenacissimae extract (MTE), commonly known as Xiao-Ai-Ping in China, is a traditional Chinese herb medicine capable of inhibiting proliferation and metastasis and boosting apoptosis in various cancer cells. However, little is known about the contribution of MTE towards tumor angiogenesis and the underlying mechanism. The present study aimed to evaluate the effects of MTE on the proliferation and apoptosis of human umbilical vein endothelial cells (HUVECs) and the molecular mechanism. 3-(4,5-dimethylthiazol-2-yl)-5(3-carboxymethoxyphenyl)-2-(4-sulfopheny)-2H-tetrazolium, inner salt (MTS) and PI-stained flow cytometry assays revealed that MTE dose-dependently reduced the proliferation of HUVECs by arresting cell cycle at S phase (P < 0...
December 2016: Chinese Journal of Natural Medicines
https://www.readbyqxmd.com/read/28253833/emerging-antibodies-for-the-treatment-of-pancreatic-cancer
#15
Kalliopi Andrikou, Chiara Peterle, Stefania Pipitone, Massimiliano Salati, Stefano Cascinu
Pancreatic ductal adenocarcinoma cancer (PDAC) is the fourth leading cause of cancer death worldwide. Recently, two chemotherapy regimens have proven to improve median overall survival in comparison with gemcitabine. Based on better understanding of tumor molecular biology and of the role of tumor microenvironment, monoclonal antibodies (mAbs) could be an interesting and new type of targeted treatment of PDAC. Areas covered: Preclinical and clinical trials have evaluated the efficacy of several mAbs in pancreatic cancer treatment...
March 2017: Expert Opinion on Emerging Drugs
https://www.readbyqxmd.com/read/28252668/aggretin-venom-polypeptide-as-a-novel-anti-angiogenesis-agent-by-targeting-integrin-alpha2beta1
#16
Ching Hu Chung, Chien Hsin Chang, Chun Chieh Hsu, Kung Tin Lin, Hui Chin Peng, Tur Fu Huang
VEGF and VEGFR antibodies have been used as a therapeutic strategy to inhibit angiogenesis in many diseases; however, frequent and repeated administration of these antibodies to patients induces immunogenicity. In previous studies, we demonstrated that aggretin, a heterodimeric snake venom C-type lectin, exhibits pro-angiogenic activities via integrin α2β1 ligation. We hypothesised that small-mass aggretin fragments may bind integrin α2β1 and act as antagonists of angiogenesis. In this study, the anti-angiogenic efficacy of a synthesised aggretin α-chain C-terminus (AACT, residue 106-136) was evaluated in both in vitro and in vivo angiogenesis models...
March 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28251217/lymphangiogenesis-and-colorectal-cancer
#17
Ciyou Huang, Yigang Chen
Lymphatic metastasis is an important event in the progress of metastasis in colorectal cancer (CRC). The purpose of this article is to assess the role of lymphangiogenesis on CRC. In peritumoral areas of CRC, the lymphatic microvessel density (LMVD) is higher than those in normal colorectal tissues. Morever, the high LMVD is correlated with DFS and local recurrence in CRC. The VEGF-C/VEGF-D/VEGFR-3 pathway, sonic hedgehog (Shh) signaling pathway and extracellular matrix (ECM) are involved in the regulation of lymphangiogenesis in CRC...
March 2017: Saudi Medical Journal
https://www.readbyqxmd.com/read/28248081/sulfated-hyaluronan-alters-endothelial-cell-activation-in-vitro-by-controlling-the-biological-activity-of-the-angiogenic-factors-vascular-endothelial-growth-factor-a-and-tissue-inhibitor-of-metalloproteinase-3
#18
Sandra Rother, Sergey A Samsonov, Stephanie Moeller, Matthias Schnabelrauch, Jörg Rademann, Joanna Blaszkiewicz, Sebastian Köhling, Johannes Waltenberger, M Teresa Pisabarro, Dieter Scharnweber, Vera Hintze
Several pathologic conditions such as rheumatoid arthritis, ocular neovascularization, cancer, or atherosclerosis are often associated with abnormal angiogenesis, which requires innovative biomaterial-based treatment options to control the activity of angiogenic factors. Here, we studied how sulfated hyaluronan (sHA) and oversulfated chondroitin sulfate derivatives as potential components of functional biomaterials modulate vascular endothelial growth factor-A (VEGF-A) signaling and endothelial cell activity in vitro...
March 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28247252/cabozantinib-an-active-novel-multikinase-inhibitor-in-renal-cell-carcinoma
#19
REVIEW
Nizar M Tannir, Gisela Schwab, Viktor Grünwald
Clear cell renal cell carcinoma (RCC) is characterized by inactivation of the von Hippel-Lindau (VHL) tumor suppressor gene. VHL loss drives tumor angiogenesis and accounts for the clinical activity of VEGF receptor (VEGFR) tyrosine kinase inhibitors (TKIs), the first-line standard of care for advanced RCC. Within the last year, three new second-line treatments have received FDA approval for use after anti-angiogenic therapy: the immune checkpoint inhibitor nivolumab, the TKI cabozantinib, and the combination of the TKI lenvatinib and the mTOR inhibitor everolimus...
February 2017: Current Oncology Reports
https://www.readbyqxmd.com/read/28243971/erratum-to-preliminary-data-of-vegf-a-and-vegfr-2-polymorphisms-as-predictive-factors-of-radiological-response-and-clinical-outcome-in-iodine-refractory-differentiated-thyroid-cancer-treated-with-sorafenib
#20
Vincenzo Marotta, Concetta Sciammarella, Mario Capasso, Alessandro Testori, Claudia Pivonello, Maria Grazia Chiofalo, Rosario Pivonello, Luciano Pezzullo, Gerardo Botti, Annamaria Colao, Antongiulio Faggiano
No abstract text is available yet for this article.
February 27, 2017: Endocrine
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