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https://www.readbyqxmd.com/read/28434806/fibronectin-adherent-peripheral-blood-derived-mononuclear-cells-as-paclitaxel-carriers-for-glioblastoma-treatment-an-in-vitro-study
#1
Marco Paolo Schiariti, Francesco Restelli, Paolo Ferroli, Anna Benetti, Angiola Berenzi, Anna Ferri, Valentina Ceserani, Emilio Ciusani, Moris Cadei, Gaetano Finocchiaro, Augusto Pessina, Eugenio Parati, Roberto Pallini, Giulio Alessandri
BACKGROUND: Glioblastoma (GBM) represents the most aggressive malignant brain tumor in adults, with a risible median life expectancy despite gold standard treatment. Novel drug-delivery methods have been explored. Here we evaluated the possibility to use mononuclear cells (MCs) belonging to the monocytic-dendritic lineage as drug-carrier. METHODS: MCs were obtained from 10 patients harboring a GBM, and from healthy volunteers, considered as controls. GBM tissue was also obtained from patients...
April 20, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28427200/idh1-r132h-mutation-regulates-glioma-chemosensitivity-through-nrf2-pathway
#2
Kaishu Li, Leping Ouyang, Mingliang He, Ming Luo, Wangqing Cai, Yalin Tu, Rongbiao Pi, Anmin Liu
PURPOSE: Numerous studies have reported that glioma patients with isocitrate dehydrogenase 1(IDH1) R132H mutation are sensitive to temozolomide treatment. However, the mechanism of IDH1 mutations on the chemosensitivity of glioma remains unclear. In this study, we investigated the role and the potential mechanism of Nrf2 in IDH1 R132H-mediated drug resistance. METHODS: Wild type IDH1 (R132H-WT) and mutant IDH1 (R132H) plasmids were constructed. Stable U87 cells and U251 cells overexpressing IDH1 were generated...
March 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28424417/mesenchymal-stem-cells-differentially-affect-the-invasion-of-distinct-glioblastoma-cell-lines
#3
Barbara Breznik, Helena Motaln, Miloš Vittori, Ana Rotter, Tamara Lah Turnšek
Glioblastoma multiforme are an aggressive form of brain tumors that are characterized by distinct invasion of single glioblastoma cells, which infiltrate the brain parenchyma. This appears to be stimulated by the communication between cancer and stromal cells. Mesenchymal stem cells (MSCs) are part of the glioblastoma microenvironment, and their 'cross-talk' with glioblastoma cells is still poorly understood. Here, we examined the effects of bone marrow-derived MSCs on two different established glioblastoma cell lines U87 and U373...
March 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423580/procollagen-lysine-2-oxoglutarate-5-dioxygenase-2-promotes-hypoxia-induced-glioma-migration-and-invasion
#4
Yangyang Xu, Lin Zhang, Yuzhen Wei, Xin Zhang, Ran Xu, Mingzhi Han, Bing Huang, Anjing Chen, Wenjie Li, Qing Zhang, Gang Li, Jian Wang, Peng Zhao, Xingang Li
Poor prognosis of glioblastoma multiforme is strongly associated with the ability of tumor cells to invade the brain parenchyma, which is believed to be the major factor responsible for glioblastoma recurrence. Therefore, identifying the molecular mechanisms driving invasion may lead to the development of improved therapies for glioblastoma patients. Here, we investigated the role of procollagen-lysine 2-oxoglutarate 5-dioxygenase 2 (PLOD2), an enzyme catalyzing collagen cross-linking, in the biology of glioblastoma invasion...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423515/preclinical-therapeutic-efficacy-of-a-novel-blood-brain-barrier-penetrant-dual-pi3k-mtor-inhibitor-with-preferential-response-in-pi3k-pten-mutant-glioma
#5
Dimpy Koul, Shuzhen Wang, Shaofang Wu, Norihiko Saito, Siyuan Zheng, Feng Gao, Isha Kaul, Masaki Setoguchi, Kiyoshi Nakayama, Kumiko Koyama, Yoshinobu Shiose, Erik P Sulman, Yasuhide Hirota, W K Alfred Yung
Glioblastoma (GBM) is an ideal candidate disease for signal transduction targeted therapy because the majority of these tumors harbor genetic alterations that result in aberrant activation of growth factor signaling pathways. Loss of heterozygosity of chromosome 10, mutations in the tumor suppressor gene PTEN, and PI3K mutations are molecular hallmarks of GBM and indicate poor prognostic outcomes in many cancers. Consequently, inhibiting the PI3K pathway may provide therapeutic benefit in these cancers. PI3K inhibitors generally block proliferation rather than induce apoptosis...
March 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28422726/syndecan-1-knockdown-inhibits-glioma-cell-proliferation-and-invasion-by-deregulating-a-c-src-fak-associated-signaling-pathway
#6
Shuang Shi, Dong Zhong, Yao Xiao, Bing Wang, Wentao Wang, Fu'an Zhang, Haoyang Huang
Recent studies have shown that increased syndecan-1 (SDC1) expression in human glioma is associated with higher tumor grades and poor prognoses, but its oncogenic functions and the underlying molecular mechanisms remain unknown. Here, we examined SDC1 expression in datasets from The Cancer Genome Atlas and the National Center for Biotechnology Information Gene Expression Omnibus. Elevated SDC1 expression in glioma was closely associated with increases in tumor progression and shorter survival. We also examined SDC1 expression and evaluated the effects of stable SDC1 knockdown in glioma cell lines...
March 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/28420995/quantum-dots-sirna-nanoplexes-for-gene-silencing-in-central-nervous-system-tumor-cells
#7
Guimiao Lin, Ting Chen, Jinyun Zou, Yucheng Wang, Xiaomei Wang, Jiefeng Li, Qijun Huang, Zicai Fu, Yingying Zhao, Marie Chia-Mi Lin, Gaixia Xu, Ken-Tye Yong
RNA interfering (RNAi) using short interfering RNA (siRNA) is becoming a promising approach for cancer gene therapy. However, owing to the lack of safe and efficient carriers, the application of RNAi for clinical use is still very limited. In this study, we have developed cadmium sulphoselenide/Zinc sulfide quantum dots (CdSSe/ZnS QDs)-based nanocarriers for in vitro gene delivery. These CdSSe/ZnS QDs are functionalized with polyethyleneimine (PEI) to form stable nanoplex (QD-PEI) and subsequently they are used for siRNA loading which specially targets human telomerase reverse transcriptase (TERT)...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28419419/the-isoprenoid-derivative-n6-benzyladenosine-cm223-exerts-antitumor-effect-in-glioma-patient-derived-primary-cells-through-the-mevalonate-pathway
#8
Elena Ciaglia, Manuela Grimaldi, Mario Abate, Mario Scrima, Manuela Rodriquez, Chiara Laezza, Roberta Ranieri, Simona Pisanti, Pierangela Ciuffreda, Clementina Manera, Patrizia Gazzerro, Anna Maria D'Ursi, Maurizio Bifulco
BACKGROUND AND PURPOSE: N6-Isopentenyladenosine (i6A) is a modified nucleoside exerting in vitro and in vivo antiproliferative effects. We previously demonstrated that the i6A action is correlated to farnesyl pyrophosphate synthase (FPPS) expression and activity, a key enzyme involved in the mevalonate (MVA) pathway, which is found aberrant in brain cancer. To develop new anti-glioma strategies, we looked for other valuable compounds exhibiting improved activity as compared to i6A. EXPERIMENTAL APPROACH: we designed and synthesized i6A derivatives characterized by the introduction of diverse chemical moieties in the N6 position of adenosine and tested for their efficacy in U87 and primary derived patient's glioma cell model...
April 18, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28415577/high-expression-of-b7-h6-in-human-glioma-tissues-promotes-tumor-progression
#9
Tianwei Jiang, Wei Wu, Huasheng Zhang, Xiangsheng Zhang, Dingding Zhang, Qiang Wang, Lei Huang, Ye Wang, Chunhua Hang
B7-H6, a new member of B7-family ligand, also known as NCR3LG1, plays an important role in NK cells mediated immune responses. Many studies have shown that it is highly expressed in various human cancers, and its expression levels are significantly associated with cancer patients' clinicopathological parameters and postoperative prognoses. But, still the exact role of B7-H6 expression in human glioma remains elusive. In the present study, we have characterized the B7-H6 expression in the human glioma tissues as well as glioma cell lines, U87 and U251...
March 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/28414205/molecular-tumor-targeting-of-gelonin-by-fusion-with-f3-peptide
#10
Song-Hee Ham, Kyoung Ah Min, Meong Cheol Shin
Therapeutically potent macromolecular drugs have shown great promise for overcoming the limitations of small-molecule anti-cancer drugs. But tumor cell-selective intracellular delivery of the macromolecules remains a major hurdle for their successful clinical application. To overcome this challenge, we engineered a novel genetic fusion protein (F3-Gel) that composed of F3 peptide, a tumor-homing peptide, and gelonin, a plant-derived ribosome-inactivating protein (RIP), and then evaluated its anti-cancer activity in vitro and in vivo...
April 17, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/28412740/combination-epidermal-growth-factor-receptor-variant-iii-peptide-pulsed-dendritic-cell-vaccine-with-mir-326-results-in-enhanced-killing-on-egfrviii-positive-cells
#11
Jianlong Li, Feng Wang, Guangzhi Wang, Ying Sun, Jinquan Cai, Xing Liu, Junhe Zhang, Xiaoyan Lu, Yongli Li, Meng Chen, Lingchao Chen, Chuanlu Jiang
The mutant Type III variant of epidermal growth factor receptor (EGFRvIII) is present in approximately one-third of glioblastoma (GBM) patients. It is never found in normal tissues; therefore, it represents a candidate target for GBM immunotherapy. PEPvIII, a peptide sequence from EGFRvIII, was designed to represent a target of glioma and is presented by MHC I/II complexes. Dendritic cells (DCs) have great potential to sensitize CD4+ T and CD8+ T cells to precisely target and eradicate GBM. Here, we show that PEPvIII could be loaded by DCs and presented to T lymphocytes, especially PEPvIII-specific CTLs, to precisely kill U87-EGFRvIII cells...
February 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28412278/disruption-of-glutamate-neurotransmitter-transmission-is-modulated-by-snap-25-in-benzo-a-pyrene-induced-neurotoxic-effects
#12
Kai Yang, Xuejun Jiang, Qiuping Su, Jing Wang, Chunlin Li, Yinyin Xia, Shuqun Cheng, Qizhong Qin, Xianqing Cao, Chengzhi Chen, Baijie Tu
Benzo[a]pyrene (B[a]P), a ubiquitous chemical contaminant in the environment, is a well-established neurotoxicant to human. However, the molecular mechanisms for B[a]P neurotoxicity are still unclear. In the present study, after treating Sprague-Dawley rats with 0.02, 0.2 and 2.0mg/kg/day B[a]P for 7 weeks [from postnatal day (PND) 5 to PND54], our results showed that B[a]P exposure caused a significant deficits in learning and memory function. By using U87 cells as in vitro model, the significant cytotoxicity and the induction of apoptosis caused by B[a]P were further verified...
April 18, 2017: Toxicology
https://www.readbyqxmd.com/read/28409734/intratumoral-delivery-of-bortezomib-impact-on-survival-in-an-intracranial-glioma-tumor-model
#13
Weijun Wang, Hee-Yeon Cho, Rachel Rosenstein-Sisson, Nagore I Marín Ramos, Ryan Price, Kyle Hurth, Axel H Schönthal, Florence M Hofman, Thomas C Chen
OBJECTIVE Glioblastoma (GBM) is the most prevalent and the most aggressive of primary brain tumors. There is currently no effective treatment for this tumor. The proteasome inhibitor bortezomib is effective for a variety of tumors, but not for GBM. The authors' goal was to demonstrate that bortezomib can be effective in the orthotopic GBM murine model if the appropriate method of drug delivery is used. In this study the Alzet mini-osmotic pump was used to bring the drug directly to the tumor in the brain, circumventing the blood-brain barrier; thus making bortezomib an effective treatment for GBM...
April 14, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28408225/synthesis-of-isoflavene-thiosemicarbazone-hybrids-and-evaluation-of-their-anti-tumor-activity
#14
Eugene M H Yee, Miriam B Brandl, David StC Black, Orazio Vittorio, Naresh Kumar
Phenoxodiol is an isoflavene with potent anti-tumor activity. In this study, a series of novel mono- and di-substituted phenoxodiol-thiosemicarbazone hybrids were synthesized via the condensation reaction between phenoxodiol with thiosemicarbazides. The in vitro anti-proliferative activities of the hybrids were evaluated against the neuroblastoma SKN-BE(2)C, the triple negative breast cancer MDA-MB-231, and the glioblastoma U87 cancer cell lines. The mono-substituted hybrids exhibited potent anti-proliferative activity against all three cancer cell lines, while the di-substituted hybrids were less active...
April 3, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28407709/synergistic-antitumor-effect-of-ing4-pten-double-tumor-suppressors-mediated-by-adenovirus-modified-with-rgd-on-glioma
#15
Yaodong Zhao, Jiarong Wang, Jicheng Yang, Jingcheng Miao
BACKGROUND: Gene therapy is regarded as a new and promising therapeutic modality for cancers, and adenovirus is one of the most frequently used vectors. However, because of low or absent coxsackievirus and adenovirus receptor levels on the surface of many kinds of tumor cells, the efficiency of adenovirus infection of target tumor cells may be low. Meanwhile, gene therapy by a single vector carrying two or more anti-oncogenes can improve treatment effects and reduce side effects from vectors...
April 12, 2017: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/28406429/release-of-doxorubicin-by-a-folate-grafted-chitosan-coated-magnetic-nanoparticle
#16
Chung-Lin Yang, Jyh-Ping Chen, Kuo-Chen Wei, Ju-Yu Chen, Chia-Wen Huang, Zi-Xian Liao
In clinical tumor therapy, chemotherapeutic routes have caused severe side effects; current delivery methods are unsatisfactory. Successful design of a remotely folate (FA)-grafted chitosan (CS)-coated magnetic nanoparticle (MNP) with low toxicity, has been achieved. A chemotherapeutic drug such as doxorubicin (DOX), is loaded in the MNP-based matrix (FA-grafted CS-DOX-TPP-MNP), which is coated by an activated target tumor molecule of FA-grafted CS biopolymer with the inclusion of tripolyphosphate (TPP) as a linker...
April 13, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28405688/regulation-of-glioma-migration-and-invasion-via-modification-of-rap2a-activity-by-the-ubiquitin-ligase-nedd4-1
#17
Lei Wang, Bingxin Zhu, Shiquan Wang, Yuxuan Wu, Wenjian Zhan, Shao Xie, Hengliang Shi, Rutong Yu
Νeuronal precursor cell expressed and developmentally downregulated protein (Nedd4-1) is an E3 ubiquitin ligase with critical roles in the pathogenesis of cancer. Herein, we demonstrated that Nedd4-1 protein was upregulated in glioma tissues vs. that in non-cancerous tissues by western blotting and immunohistochemistry. Scratch migration and Transwell chamber assays indicated that downregulation of Nedd4-1 significantly reduced the migration and invasion of the glioma cell lines U251 and U87. Conversely, overexpression of Nedd4-1 obviously enhanced the migratory and invasive capacities in both cell lines...
May 2017: Oncology Reports
https://www.readbyqxmd.com/read/28404978/effects-of-aqp5-gene-silencing-on-proliferation-migration-and-apoptosis-of-human-glioma-cells-through-regulating-egfr-erk-p38-mapk-signaling-pathway
#18
Jian Yang, Jian-Nan Zhang, Wei-Lin Chen, Gui-Song Wang, Qing Mao, Shan-Quan Li, Wen-Hao Xiong, Ying-Ying Lin, Jian-Wei Ge, Xiao-Xiong Li, Zhao Gu, Chun-Run Zhao
We investigated the effects of aquaporin 5 (AQP5) gene silencing on the proliferation, migration and apoptosis of human glioma cells through regulating the EGFR/ERK/p38MAPK signaling pathway. qRT-PCR was applied to examine the mRNA expressions of AQP5 in five human glioma cell lines. U87-MG, U251 and LN229 cells were selected and assigned into blank, vector, AQP5 siRNA and FlagAQP5 groups. MTT assay was used to measure cell proliferation. Flow cytometry (FCM) with AnnexinV-FITC/PI double staining and PI staining were employed to analyze cell apoptosis and cell cycle respectively...
March 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28402948/c-type-natriuretic-peptide-modified-lipid-vesicles-fabrication-and-use-for-the-treatment-of-brain-glioma
#19
Jia-Shuan Wu, Li-Min Mu, Ying-Zi Bu, Lei Liu, Yan Yan, Ying-Jie Hu, Jing Bai, Jing-Ying Zhang, Weiyue Lu, Wan-Liang Lu
Chemotherapy of brain glioma faces a major obstacle owing to the inability of drug transport across the blood-brain barrier (BBB). Besides, neovasculatures in brain glioma site result in a rapid infiltration, making complete surgical removal virtually impossible. Herein, we reported a novel kind of C-type natriuretic peptide (CNP) modified vinorelbine lipid vesicles for transferring drug across the BBB, and for treating brain glioma along with disrupting neovasculatures. The studies were performed on brain glioma U87-MG cells in vitro and on glioma-bearing nude mice in vivo...
March 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28402271/cyclic-rgdyc-functionalized-liposomes-for-dual-targeting-of-tumor-vasculature-and-cancer-cells-in-glioblastoma-an-in-vitro-boron-neutron-capture-therapy-study
#20
Weirong Kang, Darren Svirskis, Vijayalekshmi Sarojini, Ailsa L McGregor, Joseph Bevitt, Zimei Wu
The efficacy of boron neutron capture therapy depends on the selective delivery of 10B to the target. Integrins αvβ3 are transmembrane receptors over-expressed in both glioblastoma cells and its neovasculature. In this study, a novel approach to dual-target glioblastoma vasculature and tumor cells was investigated. Liposomes (124 nm) were conjugated with a avβ3 ligand, cyclic arginine-glycine-aspartic acid-tyrosine-cysteine peptide (c(RGDyC)-LP) (1% molar ratio) through thiol-maleimide coupling. Expression of αvβ3 in glioblastoma cells (U87) and human umbilical vein endothelial cells (HUVEC), representing tumor angiogenesis, was determined using Western Blotting with other cells as references...
March 28, 2017: Oncotarget
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