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https://www.readbyqxmd.com/read/28320095/dt-13-a-saponin-monomer-13-of-the-dwarf-lilyturf-tuber-synergized-with-vinorelbine-to-induce-mitotic-arrest-via-activation-of-erk-signaling-pathway-in-nci-h1299-cells
#1
Hongyang Li, Li Sun, Hang Li, Xiaodan Lv, Herve Semukunzi, Ruiming Li, Jun Yu, Shengtao Yuan, Sensen Lin
Vinorelbine (NVB) is a semi-synthetic vinca alkaloid that is approved for the clinical therapy of lung cancer. However, the clinical application of NVB was limited because of the acquisition of resistance and inacceptable toxicity. Therefore, it is of great interest to develop low-cytotoxic drugs that can synergize with NVB. DT-13, a saponin monomer 13 of the Dwarf lilyturf tuber, showed inhibitory effects on tumor metastasis and angiogenesis in the previous studies. Here, we found that DT-13 combined with NVB exhibited synergistic effect to inhibit the cell proliferation in human lung cancer NCI-H1299 cells rather than human embryonic lung fibroblasts WI-38...
March 16, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28319529/the-notch-signaling-system-is-involved-in-the-regulation-of-reparative-angiogenesis-in-the-zone-of-stasis
#2
Ozan Luay Abbas, Orhan Özatik, Yunus Kasm Terzi, Fikriye Yasemin Özatik, Rukiye Nar, Gamze Turna
The Notch pathway ligand Delta-like 4 (Dll4) functions as an antiangiogenic factor, inhibiting vascular endothelial growth factor (VEGF)-induced angiogenesis. This function is documented in tumor and embryonic vasculature. However, its implication in burn wounds remains unexplored. Our objective was to explore the involvement of the Notch in the healing of zone of stasis burns. We hypothesized that anti-Dll4 therapy would prevent progressive necrosis in the stasis zone by promoting angiogenesis. Burns were created in 21 rats using the comb burn model...
March 13, 2017: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/28319066/nucleus-accumbens-associated-protein-1-promotes-glycolysis-and-survival-of-hypoxic-tumor-cells-via-the-hdac4-hif-1%C3%AE-axis
#3
Y Zhang, Y-J Ren, L-C Guo, C Ji, J Hu, H-H Zhang, Q-H Xu, W-D Zhu, Z-J Ming, Y-S Yuan, X Ren, J Song, J-M Yang
Nucleus accumbens-associated protein-1 (NAC1), a nuclear factor of the BTB/POZ gene family, has emerging roles in cancer. In this study, we identified the NAC1-HDAC4-HIF-1α axis as an important pathway in regulating glycolysis and hypoxic adaptation in tumor cells. We show that nuclear NAC1 binds to histone deacetylase type 4 (HDAC4), hindering phosphorylation of HDAC4 at Ser(246) and preventing its nuclear export that leads to cytoplasmic degradation of the deacetylase. Accumulation of HDAC4 in the nuclei results in an attenuation of HIF-1α acetylation, enhancing the stabilization and transcriptional activity of HIF-1α and strengthening adaptive response of cells to hypoxia...
March 20, 2017: Oncogene
https://www.readbyqxmd.com/read/28317069/deciphering-the-role-of-ectosomes-in-cancer-development-and-progression-focus-on-the-proteome
#4
REVIEW
Magdalena Surman, Ewa Stępień, Dorota Hoja-Łukowicz, Małgorzata Przybyło
Ectosomes are small heterogeneous membrane vesicles generated by budding from the plasma membrane in a variety of cell types and, more frequently, in tumor cells. They are shed into the extracellular space and are proposed as a novel form of intracellular communication in which information is transmitted from the originating cell to recipient cells without direct cell-to-cell contact. This review focuses on a single population of extracellular vesicles-ectosomes. We summarize recent studies of tumor-derived ectosomes which examine their biogenesis and protein cargo, and their influence on different aspects of cancer progression...
March 19, 2017: Clinical & Experimental Metastasis
https://www.readbyqxmd.com/read/28316070/the-involvement-of-thrombin-in-the-pathogenesis-of-glioblastoma
#5
REVIEW
Harald Krenzlin, Viola Lorenz, Beat Alessandri
Prothrombin and its active derivative thrombin are key members of the coagulation system. The only site of extra-hepatic thrombin expression is the central nervous system (CNS), where it is involved in brain development, protection, and regeneration. Thrombin affects various degenerative and ischemic CNS diseases like Alzheimer's, multiple sclerosis, cerebral ischemia, and hemorrhage in a dose dependent manner. Additionally, the association of thrombin with various malignancies has recently become evident. Thrombin facilitates the interaction between tumor cells with platelets, endothelial cells, and the adhesion to matrix proteins in various tumor types...
March 19, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/28315948/-18f-fmiso-pet-study-of-hypoxia-in-gliomas-before-surgery-correlation-with-molecular-markers-of-hypoxia-and-angiogenesis
#6
Lien Bekaert, Samuel Valable, Emmanuèle Lechapt-Zalcman, Keven Ponte, Solène Collet, Jean-Marc Constans, Guénaëlle Levallet, Karim Bordji, Edwige Petit, Pierre Branger, Evelyne Emery, Alain Manrique, Louisa Barré, Myriam Bernaudin, Jean-Sébastien Guillamo
PURPOSE: Hypoxia in gliomas is associated with tumor resistance to radio- and chemotherapy. However, positron emission tomography (PET) imaging of hypoxia remains challenging, and the validation of biological markers is, therefore, of great importance. We investigated the relationship between uptake of the PET hypoxia tracer [18F]-FMISO and other markers of hypoxia and angiogenesis and with patient survival. PATIENTS AND METHODS: In this prospective single center clinical study, 33 glioma patients (grade IV: n = 24, III: n = 3, and II: n = 6) underwent [18F]-FMISO PET and MRI including relative cerebral blood volume (rCBV) maps before surgery...
March 18, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28315704/interleukin-6-and-prostate-cancer-current-developments-and-unsolved-questions
#7
Zoran Culig, Martin Puhr
Interleukin (IL)-6 is a pro-inflammatory cytokine that is expressed in prostate tumors and in the stromal tumor micro-enviroment. It is known to regulate proliferation, apoptosis, angiogenesis, and differentiation. The signaling pathway of Janus kinase and signal transducer and activator of transcription (STAT)3, which is activated by IL-6, is in the focus of scientific investigations for improved treatment approaches. Different effects of IL-6 and/or STAT3 on tumor cell growth have been observed in human and murine prostate cancer (PCa) models...
March 15, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28314278/elevated-preoperative-serum-cea-level-is-associated-with-poor-prognosis-in-patients-with-hepatocellular-carcinoma-through-the-epithelial-mesenchymal-transition
#8
Masato Yoshikawa, Yuji Morine, Tetsuya Ikemoto, Satoru Imura, Jun Higashijima, Shuichi Iwahashi, Y U Saito, Chie Takasu, Shinichiro Yamada, Daichi Ishikawa, Hiroki Teraoku, Atsushi Takata, Toshiaki Yoshimoto, Mitsuo Shimada
BACKGROUND: Serum carcinoembryonic antigen (CEA) is used as an indicator of tumor progression in a variety of carcinomas. A subset of patients with hepatocellular carcinoma (HCC) exhibit increased serum CEA level, but the significance of this is unclear. In this study, we investigated the prognosis of patients with HCC with increased serum CEA, and explored the correlations with expression of carcinoembryonic antigen-related cell adhesion molecule 1 (CEACAM1) and epithelial-mesenchymal transition (EMT) and tumor angiogenesis...
March 2017: Anticancer Research
https://www.readbyqxmd.com/read/28314272/immunohistochemical-study-of-vasculogenic-mimicry-and-angiogenesis-in-melanocytic-tumors-of-the-eye-and-the-periocular-area
#9
Konstantinos Spiliopoulos, Dimitrios Peschos, Anna Batistatou, Ioannis Ntountas, Alexandra Papoudou-Bai, Aikaterini Zioga, Niki Agnantis, Georgios Kitsos
BACKGROUND/AIM: The ability of a tumor to grow requires a sufficient blood supply. Microvascular density is considered the standard for assessing the neovasculature. Tumor cell vasculogenic mimicry refers to the formation of tumor cell-lined vessels that contribute to tumor neovascularization. The aim of the present work was to study angiogenesis and vasculogenic mimicry in benign and malignant melanocytic tumors of the eye and the periocular region. PATIENTS AND METHODS: Histological sections from 118 patients were studied...
March 2017: Anticancer Research
https://www.readbyqxmd.com/read/28304186/mir-205-mediates-the-inhibition-of-cervical-cancer-cell-proliferation-using-olmesartan
#10
Zhang Yue, Zhang Yun-Shan, Xue Feng-Xia
OBJECTIVE: The renin-angiotensin-aldosterone system has become known as a prerequisite for tumor angiogenesis that is now recognized as a crucial step in the development of tumors, including cervical cancer. The Ang II-AT1R pathway is known to play an important role in tumor angiogenesis. MicroRNAs (miRNAs) are a class of small, regulating RNAs that participate in tumor genesis, differentiation and proliferation. The current study focused on the anti-tumor mechanism of olmesartan, a novel angiotensin II antagonist, on cervical cancer cells...
July 2016: Journal of the Renin-angiotensin-aldosterone System: JRAAS
https://www.readbyqxmd.com/read/28304082/molecular-mechanisms-of-tumor-invasion-regulation-by-calcium-signals
#11
Oksana Iamshanova, Alessandra Fiorio Pla, Natalia Prevarskaya
Intracellular calcium (Ca(2+) ) signals are key regulators of multiple cellular functions: both healthy and physiopathological. It is therefore unsurprising that several cancers present a strong Ca(2+) homeostasis deregulation. Among the various hallmarks of cancer disease, a particular role is played by metastasis, which has a critical impact on cancer patients' outcome. Importantly, Ca(2+) signalling has been reported to control multiple aspects of the adaptive metastatic cancer cell behaviour, including epithelial-mesenchymal transition, cell migration, local invasion and induction of angiogenesis (see Abstract Figure)...
March 17, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28303751/vasoactive-peptides-associate-with-treatment-outcome-ofbevacizumab-containing-therapy-in-metastatic-colorectal-cancer
#12
Helga Hagman, Pär-Ola Bendahl, Olle Melander, Jan Sundberg, Anders Johnsson, Mattias Belting
BACKGROUND: Hypertension is a common early adverse event of anti-angiogenic treatment of cancer and may associate with treatment response. However, blood pressure measurement as a surrogate response biomarker has methodological limitations, and predictive biomarkers of angiogenesis inhibitors are lacking. In disease associated with hypertension, vasoactive peptides have been linked to cardiovascular pressure load. Here, we have explored potential associations between circulating levels of vasoactive peptides and tumor response during bevacizumab-containing treatment of colorectal cancer...
March 17, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28302677/the-integrin-binding-defective-fgf2-mutants-potently-suppress-fgf2-signaling-and-angiogenesis
#13
Seiji Mori, Nobuaki Hatori, Naomasa Kawaguchi, Yoshinosuke Hamada, Tsung-Chieh Shih, Chun-Yi Wu, Kit S Lam, Nariaki Matsuura, Hirofumi Yamamoto, Yoko K Takada, Yoshikazu Takada
We recently found that integrin αvβ3 binds to FGF1, and that the integrin-binding defective FGF1 mutant (Arg-50 to Glu, R50E) is defective in signaling and antagonistic to FGF1 signaling. R50E suppressed angiogenesis and tumor growth, suggesting that R50E has potential as a therapeutic. However, FGF1 is unstable, and we had to express R50E in cancer cells for xenograft study, since injected R50E may rapidly disappear from circulation. We studied if we can develop antagonist of more stable FGF2. FGF2 is widely involved in important biological processes such as stem cell proliferation and angiogenesis...
March 16, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28302581/targeting-ets1-with-rnai-based-supramolecular-nanoassemblies-for-multidrug-resistant-breast-cancer-therapy
#14
Min Wu, Xingang Liu, Weihong Jin, Yongbing Li, Yang Li, Qinglian Hu, Paul K Chu, Guping Tang, Yuan Ping
Overexpression of erythroblastosis virus E26 oncogene homolog 1 (ETS1) gene is correlated with both tumor progression and poor response to chemotherapy in cancer treatment, and the exploitation of RNA interference (RNAi) technology to downregulate ETS1 seems to be a promising approach to reverse multidrug-resistant cancer cells to chemotherapy. Hence, the RNAi-based nanomedicine which is able to simultaneously downregulate ETS1 expression and to deliver chemotherapeutic agents may improve multidrug-resistant cancer therapy synergistically...
March 13, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28300714/biomarkers-and-immunotherapeutic-targets-in-glioblastoma
#15
REVIEW
Alice L Hung, Tomas Garzon-Muvdi, Michael Lim
Glioblastoma (GBM) is an aggressive central nervous system (CNS) cancer with poor prognosis despite maximal therapy. The recent advent of immunotherapy holds great promise for improving GBM survival and has already made great strides towards changing current management strategies. A diverse set of biomarkers has been implicated as immunotherapeutic targets and prognostic indicators in other cancers. Some of the more extensively studied examples include cytokines (IL-4, IL-13, and TGF-ß), checkpoint molecules (PD-1, CTLA-4, TIM-3, LAG-3, CD137, GITR, OX40), and growth/angiogenesis proteins (endoglin and EGFR)...
March 11, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28299673/roles-of-runx-in-hypoxia-induced-responses-and-angiogenesis
#16
Sun Hee Lee, Sarala Manandhar, You Mie Lee
During the past two decades, Runt domain transcription factors (RUNX1, 2, and 3) have been investigated in regard to their function, structural elements, genetic variants, and roles in normal development and pathological conditions. The Runt family proteins are evolutionarily conserved from Drosophila to mammals, emphasizing their physiological importance. A hypoxic microenvironment caused by insufficient blood supply is frequently observed in developing organs, growing tumors, and tissues that become ischemic due to impairment or blockage of blood vessels...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28299426/immunoexpression-of-glut-1-and-angiogenic-index-in-pleomorphic-adenomas-adenoid-cystic-carcinomas-and-mucoepidermoid-carcinomas-of-the-salivary-glands
#17
Lélia Batista de Souza, Lucileide Castro de Oliveira, Cassiano Francisco Weege Nonaka, Maria Luiza Diniz de Sousa Lopes, Leão Pereira Pinto, Lélia Maria Guedes Queiroz
This study aimed to evaluate and compare the immunoexpression of glucose transporter-1 (GLUT-1) and angiogenic index between pleomorphic adenomas (PAs), adenoid cystic carcinomas (ACCs), and mucoepidermoid carcinomas (MECs) of the salivary glands, and establish associations with the respective subtype/histological grade. Twenty PAs, 20 ACCs, and 10 MECs were submitted to morphological and immunohistochemical analysis. GLUT-1 expression was semi-quantitatively evaluated and angiogenic index was assessed by microvessel counts using anti-CD34 antibody...
March 16, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28298294/vegfr3-modulates-vascular-permeability-by-controlling-vegf-vegfr2-signaling
#18
Krista Heinolainen, Sinem Karaman, Gabriela D'Amico, Tuomas Tammela, Raija Sormunen, Lauri Eklund, Kari Alitalo, Georgia Zarkada
Rationale: Vascular endothelial growth factor (VEGF) is the main driver of angiogenesis and vascular permeability via VEGF receptor 2 (VEGFR2), while lymphangiogenesis signals are transduced by VEGFC/D via VEGFR3. VEGFR3 also regulates sprouting angiogenesis and blood vessel growth, but to what extent VEGFR3 signaling controls blood vessel permeability remains unknown. Objective: To investigate the role of VEGFR3 in the regulation of VEGF-induced vascular permeability. Methods and Results: Long-term global Vegfr3 gene deletion in adult mice resulted in increased fibrinogen deposition in lungs and kidneys, indicating enhanced vascular leakage at the steady state...
March 15, 2017: Circulation Research
https://www.readbyqxmd.com/read/28298068/gum-arabic-encapsulated-gold-nanoparticles-for-a-non-invasive-photothermal-ablation-of-lung-tumor-in-mice
#19
Amira M Gamal-Eldeen, Dina Moustafa, Sherien M El-Daly, Mona A M Abo-Zeid, Samira Saleh, Menka Khoobchandani, Kavita Katti, Ravi Shukla, Kattesh V Katti
BACKGROUND: In our previous work, we have extensively evaluated the physiochemical characteristics of Gum Arabic-encapsulated gold nanoparticles (GA-AuNPs; 15-18nm) and reported their effectiveness in stopping the tumor initiation via inhibiting the pre-neoplastic lesions in liver. OBJECTIVE: The rationale of this study is to detect the efficiency of using GA-AuNPs in photothermal application as a non-invasive technique against lung tumor. We investigated the cytotoxicity of GA-AuNPs on A549 cells, and then studied their apoptotic, anti-inflammatory, lipid peroxidation and anti-neovascular effect in in vivo model using a chemically-induced lung cancer in mice...
March 11, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28296148/dimp53-1-a-novel-small-molecule-dual-inhibitor-of-p53-mdm2-x-interactions-with-multifunctional-p53-dependent-anticancer-properties
#20
Joana Soares, Margarida Espadinha, Liliana Raimundo, Helena Ramos, Ana Sara Gomes, Sara Gomes, Joana B Loureiro, Alberto Inga, Flávio Reis, Célia Gomes, Maria M M Santos, Lucília Saraiva
The transcription factor p53 plays a crucial role in cancer development and dissemination, and thus p53-targeted therapies are amongst the most encouraging anticancer strategies. In human cancers with wild-type (wt) p53, its inactivation by interaction with murine double minute (MDM)2 and MDMX is a common event. Simultaneous inhibition of the p53 interaction with both MDMs is crucial to restore the tumor suppressor activity of p53. Here we describe the synthesis of the new tryptophanol-derived oxazoloisoindolinone DIMP53-1 and identify its activity as a dual inhibitor of the p53-MDM2/X interactions using a yeast-based assay...
March 10, 2017: Molecular Oncology
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