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https://www.readbyqxmd.com/read/28817313/ccr7-mediates-tgf-%C3%AE-1-induced-human-malignant-glioma-invasion-migration-and-epithelial-mesenchymal-transition-by-activating-mmp2-9-through-the-nuclear-factor-kappab-signaling-pathway
#1
Yanyan Zheng, Yiting Miu, Xiaokai Yang, Xiaoguo Yang, Meijia Zhu
Chemokine receptor 7 (CCR7) has emerged as an inducer of invasion, migration, and epithelial-mesenchymal transition (EMT) in cancer. In this research, human malignant glioma cells were stimulated with transforming growth factor beta 1 (TGF-β1) and siCCR7. The data show that CCR7 mediates TGF-β1-induced EMT, migration, and invasion in U251 and U87 cells and that these effects of TGF-β1 were reversed by treatment with siCCR7 or a CCR7 neutralizing antibody. Importantly, the TGF-β1-mediated increase in nuclear factor kappaB (NF-κB) activity in human glioma cells was reduced by treatment with siCCR7 or a CCR7 neutralizing antibody...
August 17, 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/28816233/shikonin-induces-glioma-cell-necroptosis-in-vitro-by-ros-overproduction-and-promoting-rip1-rip3-necrosome-formation
#2
Bin Lu, Xu Gong, Zong-Qi Wang, Ye Ding, Chen Wang, Tian-Fei Luo, Mei-Hua Piao, Fan-Kai Meng, Guang-Fan Chi, Yi-Nan Luo, Peng-Fei Ge
Necroptosis is a type of programmed necrosis regulated by receptor interacting protein kinase 1 (RIP1) and RIP3. Necroptosis is found to be accompanied by an overproduction of reactive oxygen species (ROS), but the role of ROS in regulation of necroptosis remains elusive. In this study, we investigated how shikonin, a necroptosis inducer for cancer cells, regulated the signaling leading to necroptosis in glinoma cells in vitro. Treatment with shikonin (2-10 μmol/L) dose-dependently triggered necrosis and induced overproduction of intracellular ROS in rat C6 and human SHG-44, U87 and U251 glioma cell lines...
August 17, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/28802229/tgf-%C3%AE-mediated-repression-of-mst1-by-dnmt1-promotes-glioma-malignancy
#3
Zhifei Guo, Guangyuan Li, Erbao Bian, Chun-Chun Ma, Jinghai Wan, Bing Zhao
Human gliomas are related to high rates of morbidity and mortality. TGF-β promotes the growth of glioma cells, and correlate with the degree of malignancy of human gliomas. However, the molecular mechanisms involved in the malignant function of TGF-β are not fully elucidated. Here, we showed that TGF-β induced the downregulation of MST1 expression in U87 and U251 glioma cells. Treatment of glioma cells with the DNA methylation inhibitor 5-aza-2'-deoxycytidine (5-AzadC) prevented the loss of MST1 expression...
August 9, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28801587/temozolomide-arrests-glioma-growth-and-normalizes-intratumoral-extracellular-ph
#4
Jyotsna U Rao, Daniel Coman, John J Walsh, Meser M Ali, Yuegao Huang, Fahmeed Hyder
Gliomas maintain an acidic extracellular pH (pHe), which promotes tumor growth and builds resistance to therapy. Given evidence that acidic pHe beyond the tumor core indicates infiltration, we hypothesized that imaging the intratumoral pHe in relation to the peritumoral pHe can provide a novel readout of therapeutic influence on the tumor microenvironment. We used Biosensor Imaging of Redundant Deviation in Shifts (BIRDS), which utilizes chemical shifts of non-exchangeable protons from macrocyclic chelates (e...
August 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28791366/juglone-reduces-growth-and-migration-of-u251-glioblastoma-cells-and-disrupts-angiogenesis
#5
Jian Wang, Ke Liu, Xiao-Feng Wang, Dian-Jun Sun
Accumulating data show that prolylisomerase (Pin1) is overexpressed in human glioblastoma multiforme (GBM) specimens. Therefore, Pin1 inhibitors should be investigated as a new chemotherapeutic drug that may enhance the clinical management of human gliomas. Recently, juglone, a Pin1 inhibitor, was shown to exhibit potent anticancer activity in various tumor cells, but its role in human glioma cells remains unknown. In the present study, we determined if juglone exerts antitumor effects in the U251 human glioma cell line and investigated its potential underlying molecular mechanisms...
August 3, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28790798/development-and-characterisation-of-a-novel-nf-%C3%AE%C2%BAb-reporter-cell-line-for-investigation-of-neuroinflammation
#6
Marie-Theres Zeuner, Thomas Vallance, Sakthivel Vaiyapuri, Graeme S Cottrell, Darius Widera
Aberrant activation of the transcription factor NF-κB, as well as uncontrolled inflammation, has been linked to autoimmune diseases, development and progression of cancer, and neurological disorders like Alzheimer's disease. Reporter cell lines are a valuable state-of-the art tool for comparative analysis of in vitro drug screening. However, a reporter cell line for the investigation of NF-κB-driven neuroinflammation has not been available. Thus, we developed a stable neural NF-κB-reporter cell line to assess the potency of proinflammatory molecules and peptides, as well as anti-inflammatory pharmaceuticals...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28780604/mir-338-5p-promotes-glioma-cell-invasion-by-regulating-tshz3-and-mmp2
#7
Yanyan Li, Yulun Huang, Zhenyu Qi, Ting Sun, Youxin Zhou
This study was designed to examine differential expression of miR-338-5p in gliomas and the role of miR-338-5p in glioma cell invasion via its potential target gene TSHZ3 encoding Teashirt zinc finger homobox 3, predicted by bioinformatics, and matrix metallopeptidase 2 (MMP2), the key pro-invasive protease overexpressed in gliomas. Quantitative real-time reverse transcription PCR (qRT-PCR) and Spearman correlation analysis were used to determine differential expressions of miR-338-5p and TSHZ3 in astrocytic gliomas of different grades (n = 35) and glioblastoma cell lines (U87 and U251) in comparison to non-neoplastic brain (NNB) tissues (n = 6)...
August 5, 2017: Cellular and Molecular Neurobiology
https://www.readbyqxmd.com/read/28776680/genistein-exerts-potent-antitumour-effects-alongside-anaesthetic-propofol-by-suppressing-cell-proliferation-and-nuclear-factor-%C3%AE%C2%BAb-mediated-signalling-and-through-upregulating-microrna-218-expression-in-an-intracranial-rat-brain-tumour-model
#8
Yuzhen Zheng, Haigen Liu, Yu Liang
OBJECTIVE: This study was implemented to evaluate the effect of genistein and propofol on intracranial tumour model. METHODS: Male Fischer 344 rats were subjected to intracranial implantation of 9L gliosarcoma cells. Genistein (100 or 200 mg/kg b.wt) was administered orally regularly from 3rd day after implantation to 25th day. Propofol (20 mg/kg; i.p.) was administered once every 5 days till 25th day and was administered 2 h after genistein. KEY FINDINGS: Human gliosarcoma cells (U251) exposed to genistein (12...
August 4, 2017: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/28776671/%C3%AE-asarone-inhibited-cell-growth-and-promoted-autophagy-via-p53-bcl-2-bclin-1-and-p53-ampk-mtor-pathways-in-human-glioma-u251-cells
#9
Nanbu Wang, Qinxin Zhang, Laiyu Luo, Baile Ning, Yongqi Fang
Glioma is the most common type of primary brain tumor and has an undesirable prognosis. Autophagy plays an important role in cancer therapy, but it's effect is still not definite. P53 is an important tumor suppressor gene and protein that is closely to autophagy. Our aim was to study the effect of β-asarone on inhibiting cell proliferation in human glioma U251 cells and to detect the effect of the inhibition on autophagy through the P53 signal pathway. For cell growth, the cells were divided into four groups: the model, β-asarone, temozolomide (TMZ) and co-administration groups...
August 4, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28760640/sialidase-neu3-defines-invasive-potential-of-human-glioblastoma-cells-by-regulating-calpain-mediated-proteolysis-of-focal-adhesion-proteins
#10
Kohta Takahashi, Sergei Proshin, Kazunori Yamaguchi, Yoji Yamashita, Ryuichi Katakura, Koji Yamamoto, Hiroshi Shima, Masahiro Hosono, Taeko Miyagi
BACKGROUND: Glioblastoma multiforme is one of the most malignant tumors of the human central nervous system characterized by high degree of invasiveness. Focusing on this invasive nature, we investigated whether ganglioside-specific sialidase NEU3 might be involved, because gangliosides are major components of brain tissues, and cell surface sialic acids, as target residues of sialidase catalysis, are thought to be closely related to cell invasion. METHODS: NEU3 mRNA levels of human glioblastoma specimens were evaluated by quantitative RT-PCR...
July 29, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28754882/a-regulatory-role-for-the-co-chaperone-fkbp51s-in-pd-l1-expression-in-glioma
#11
Paolo D'Arrigo, Michele Russo, Anna Rea, Martina Tufano, Elia Guadagno, Maria Laura Del Basso De Caro, Roberto Pacelli, Felix Hausch, Stefania Staibano, Gennaro Ilardi, Silvia Parisi, Maria Fiammetta Romano, Simona Romano
BACKGROUND: FKBP51 is a co-chaperone with isomerase activity, abundantly expressed in glioma. We previously identified a spliced isoform (FKBP51s) and highlighted a role for this protein in the upregulation of Programmed Death Ligand 1 (PD-L1) expression in melanoma. Because gliomas can express PD-L1 causing a defective host anti-tumoral immunity, we investigated whether FKBP51s was expressed in glioma and played a role in PD-L1 regulation in this tumour. METHODS: We used D54 and U251 glioblastoma cell lines that constitutively expressed PD-L1...
July 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28754121/coiled-coil-domain-containing-109b-is-a-hif1%C3%AE-regulated-gene-critical-for-progression-of-human-gliomas
#12
Ran Xu, Mingzhi Han, Yangyang Xu, Xin Zhang, Chao Zhang, Di Zhang, Jianxiong Ji, Yuzhen Wei, Shuai Wang, Bin Huang, Anjing Chen, Qing Zhang, Wenjie Li, Tao Sun, Feng Wang, Xingang Li, Jian Wang
BACKGROUND: The coiled-coil domain is a structural motif found in proteins that participate in a variety of biological processes. Aberrant expression of such proteins has been shown to be associated with the malignant behavior of human cancers. In this study, we investigated the role of a specific family member, coiled-coil domain containing 109B (CCDC109B), in human gliomas. METHODS AND RESULTS: We confirmed that CCDC109B was highly expressed in high grade gliomas (HGG; WHO III-IV) using immunofluorescence, western blot analysis, immunohistochemistry (IHC) and open databases...
July 28, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28744130/long-noncoding-rna-casc2-predicts-the-prognosis-of-glioma-patients-and-functions-as-a-suppressor-for-gliomas-by-suppressing-wnt-%C3%AE-catenin-signaling-pathway
#13
Ronglin Wang, Yuqian Li, Gang Zhu, Bo Tian, Wen Zeng, Yang Yang, Zhihong Li
BACKGROUND: Previous studies have demonstrated that long noncoding RNA cancer susceptibility candidate 2 (lncRNA CASC2) is frequently downregulated in several types of tumors and functions as a tumor-suppressive factor. However, the clinical significance and function of CASC2 in human glioma remain largely unknown. The purpose of this study was to identify the clinical values of CASC2, as well as investigate the potential molecular mechanisms in glioma. METHODS: This retrospective study first analyzed the expression levels of CASC2 using quantitative real-time polymerase chain reaction...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28743999/selenocysteine-induces-apoptosis-in-human-glioma-cells-evidence-for-trxr1-targeted-inhibition-and-signaling-crosstalk
#14
Cun-Dong Fan, Xiao-Yan Fu, Zong-Yong Zhang, Ming-Zhi Cao, Jing-Yi Sun, Ming-Feng Yang, Xiao-Ting Fu, Shi-Jun Zhao, Lu-Rong Shao, Hui-Fang Zhang, Xiao-Yi Yang, Bao-Liang Sun
Thioredoxin reductase (TrxR) as a selenium (Se)-containing antioxidase plays key role in regulating intracellular redox status. Selenocystine (SeC) a natural available Se-containing amino acid showed novel anticancer potential through triggering oxidative damage-mediated apoptosis. However, whether TrxR-mediated oxidative damage was involved in SeC-induced apoptosis in human glioma cells has not been elucidated yet. Herein, SeC-induced human glioma cell apoptosis was detected in vitro, accompanied by PARP cleavage, caspases activation and DNA fragmentation...
July 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28738091/the-second-window-icg-technique-demonstrates-a-broad-plateau-period-for-near-infrared-fluorescence-tumor-contrast-in-glioblastoma
#15
Ryan Zeh, Saad Sheikh, Leilei Xia, John Pierce, Andrew Newton, Jarrod Predina, Steve Cho, MacLean Nasrallah, Sunil Singhal, Jay Dorsey, John Y K Lee
INTRODUCTION: Fluorescence-guided surgery has emerged as a powerful tool to detect, localize and resect tumors in the operative setting. Our laboratory has pioneered a novel way to administer an FDA-approved near-infrared (NIR) contrast agent to help surgeons with this task. This technique, coined Second Window ICG, exploits the natural permeability of tumor vasculature and its poor clearance to deliver high doses of indocyanine green (ICG) to tumors. This technique differs substantially from established ICG video angiography techniques that visualize ICG within minutes of injection...
2017: PloS One
https://www.readbyqxmd.com/read/28733519/long-noncoding-rna-ab073614-promotes-the-malignance-of-glioma-by-activating-wnt-%C3%AE-catenin-signaling-through-downregulating-sox7
#16
Yuqian Li, Gang Zhu, Wen Zeng, Jiancai Wang, Zhihong Li, Bao Wang, Bo Tian, Dan Lu, Xingye Zhang, Guodong Gao, Lihong Li
Long noncoding RNA (lncRNA) AB073614 has recently shown to be aberrantly increased and identified as a poor prognostic biomarker in human glioma. However, the potential mechanisms remain unknown. This study demonstrated that AB073614 expression was significantly upregulated in both glioma tissues and cell lines, and glioma patients with high AB073614 expression had lower overall survival rates. Importantly, silencing AB073614 expression remarkably inhibited U251 cell proliferation, migration, and invasion in vitro, as well as suppressed tumor formation in vivo...
July 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28731180/mir-216b-inhibits-glioma-cell-migration-and-invasion-through-suppression-of-foxm1
#17
Tingting Zhang, Guangtao Ma, Yan Zhang, Hongda Huo, Yuqian Zhao
MicroRNAs (miRNAs) play a vital role in tumour biological and pathologic processes. In the present study, we aimed to detect the expression and biological role of miR-216b in glioma. Our data showed that miR-216b was significantly downregulated in human glioma tissues and cells. Ectopic expression of miR-216b inhibited the proliferation and invasion of U87 and U251 cells and suppressed the growth of xenograft tumours in vivo. Bioinformatic and luciferase reporter analyses identified Forkhead box protein M1 (FoxM1) as a direct target of miR-216b...
July 17, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28730782/human-glioma-cells-conditioned-medium-promotes-proliferation-and-migration-of-human-bone-marrow-mesenchymal-stromal-cells-in-vitro
#18
Rusen Zhu, Xinggui Chen, Jinghong Li, Liubo Lan
PURPOSE: To investigate changes in cell proliferation and migration of human bone marrow-derived mesenchymal stromal cells (hMSCs) in glioma environment, in order to assess the tumorigenic risk of hMSCs in the clinical application to treat human gliomas. METHODS: hMSCs were obtained from normal adult persons and identified by their morphological characteristics and test of their stemness. The U251 glioma cell-conditioned medium (U251-CM) was obtained to simulate the human glioma environment in vitro...
May 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/28724215/melatonin-inhibits-proliferation-and-invasion-via-repression-of-mirna-155-in-glioma-cells
#19
Junyi Gu, Zhongsheng Lu, Chenghong Ji, Yuchao Chen, Yuzhao Liu, Zhe Lei, Longqiang Wang, Hong-Tao Zhang, Xiangdong Li
Melatonin, an indolamine mostly synthesized in the pineal gland, exerts the anti-cancer effect by various mechanisms in glioma cells. Our previous study showed that miR-155 promoted glioma cell proliferation and invasion. However, the question of whether melatonin may inhibit glioma by regulating miRNAs has not yet been addressed. In this study, we found that melatonin (100μM, 1μM and 1nM) significantly inhibited the expression of miR-155 in human glioma cell lines U87, U373 and U251. Especially, the lowest expression of miR-155 was detected in 1μM melatonin-treated glioma cells...
September 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28718378/microrna-613-is-downregulated-in-hcmv-positive-glioblastoma-and-inhibits-tumour-progression-by-targeting-arginase-2
#20
Yan Wang, Peng Zhao, Dongmeng Qian, Ming Hu, Li Zhang, Hailei Shi, Bin Wang
Glioblastoma is the most common and malignant tumour that occurs primarily in nervous system and has a high morbidity. Research on glioblastoma has recently focused on human cytomegalovirus, belonging to the beta subfamily of Herpesviridae that plays crucial roles in cancer development and progression. This study aimed to investigate the role of human cytomegalovirus-associated microRNA-613 in glioblastoma. In this study, we demonstrate that microRNA-613 expression was frequently reduced in human cytomegalovirus-positive glioblastoma specimens/cells compared with human cytomegalovirus-negative glioblastoma tissue/cells, and a significant correlation was observed between the reduction in microRNA-613 expression and the presence of unfavourable variables, including tumour size (p = 0...
July 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
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