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https://www.readbyqxmd.com/read/28432589/expression-and-function-of-abcg2-and-xiap-in-glioblastomas
#1
Ivette F Emery, Archana Gopalan, Stephanie Wood, Kin-Hoe Chow, Chiara Battelli, Joshy George, Hagen Blaszyk, Jeffrey Florman, Kyuson Yun
Despite multimodal treatment that includes surgery, radiation and chemotherapy, virtually all glioblastomas (GBM) recur, indicating that these interventions are insufficient to eradicate all malignant cells. To identify potential new therapeutic targets in GBMs, we examined the expression and function of proteins that are associated with therapy resistance and cancer cell survival. We measured the expression of eight such proteins in 50 GBM samples by immunohistochemistry and analyzed patient survival. We report that GBM patients with high expression of ABCG2 (also called BCRP) or XIAP at the protein level had worse survival than those with low expression...
April 21, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28428258/deletion-of-inositol-requiring-enzyme-1%C3%AE-in-podocytes-disrupts-glomerular-capillary-integrity-and-autophagy
#2
Daniel Robert Kaufman, Joan Papillon, Louise Larose, Takao Iwawaki, Andrey V Cybulsky
Inositol-requiring enzyme-1α (IRE1α) is an endoplasmic reticulum (ER)-transmembrane endoribonuclease-kinase, which plays an essential function in extraembryonic tissues during normal development, and is activated during ER stress. To address the functional role of IRE1α in glomerular podocytes, we produced podocyte-specific IRE1α deletion mice. In male mice, deletion of IRE1α in podocytes resulted in albuminuria beginning at 5 months of age, and worsening with time. Electron microscopy revealed focal podocyte foot process effacement in 9-month old male IRE1α deletion mice, as well as microvillous transformation of podocyte plasma membranes...
April 20, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28427209/hif1%C3%AE-regulates-single-differentiated-glioma-cell-dedifferentiation-to-stem-like-cell-phenotypes-with-high-tumorigenic-potential-under-hypoxia
#3
Pan Wang, Chuan Lan, Shuanglong Xiong, Xiuwen Zhao, You'an Shan, Rong Hu, Wenwu Wan, Shuangjiang Yu, Bin Liao, Guangzhi Li, Junwei Wang, Dewei Zou, Bing Chen, Hua Feng, Nan Wu
The standard treatment for Glioblastoma multiforme (GBM) is surgical resection and subsequent radiotherapy and chemotherapy. Surgical resection of GBM is typically restricted because of its invasive growth, which results in residual tumor cells including glioma stem cells (GSCs) and differentiated cells. Recurrence has been previously thought to occur as a result of these GSCs, and hypoxic microenvironment maintains the GSCs stemness also plays an important role. Summarizing traditional studies and we find many researchers ignored the influence of hypoxia on differentiated cells...
March 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28424411/migration-pattern-actin-cytoskeleton-organization-and-response-to-pi3k-mtor-and-hsp90-inhibition-of-glioblastoma-cells-with-different-invasive-capacities
#4
Simon Memmel, Dmitri Sisario, Caren Zöller, Vanessa Fiedler, Astrid Katzer, Robin Heiden, Nicholas Becker, Lorenz Eing, Fábio L R Ferreira, Heiko Zimmermann, Markus Sauer, Michael Flentje, Vladimir L Sukhorukov, Cholpon S Djuzenova
High invasiveness and resistance to chemo- and radiotherapy of glioblastoma multiforme (GBM) make it the most lethal brain tumor. Therefore, new treatment strategies for preventing migration and invasion of GBM cells are needed. Using two different migration assays, Western blotting, conventional and super-resolution (dSTORM) fluorescence microscopy we examine the effects of the dual PI3K/mTOR-inhibitor PI-103 alone and in combination with the Hsp90 inhibitor NVP-AUY922 and/or irradiation on the migration, expression of marker proteins, focal adhesions and F-actin cytoskeleton in two GBM cell lines (DK-MG and SNB19) markedly differing in their invasive capacity...
April 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28420545/gqsar-modeling-and-combinatorial-library-generation-of-4-phenylquinazoline-2-carboxamide-derivatives-as-antiproliferative-agents-in-human-glioblastoma-tumors
#5
Debolina Goswami, Sukriti Goyal, Salma Jamal, Ritu Jain, Divya Wahi, Abhinav Grover
BACKGROUND: TSPO translocator protein, encoded in humans by the Tspo gene plays a crucial role in mitochondria mediated apoptosis and necrotic cell death through its association with Mitochondrial Permeability Transition pore (MPTP). It has been shown that this function can be exploited as a potential treatment for human Glioblastoma Multiforme. In this study, a novel robust fragment based QSAR model has been developed for a series of 4-phenylquinazoline-2-carboxamides experimentally known to be ligands for TSPO, thus triggering apoptotic mechanism cascade...
April 4, 2017: Computational Biology and Chemistry
https://www.readbyqxmd.com/read/28419967/olea-europaea-leaf-extract-and-bevacizumab-synergistically-exhibit-beneficial-efficacy-upon-human-glioblastoma-cancer-stem-cells-through-reducing-angiogenesis-and-invasion-in-vitro
#6
Gulcin Tezcan, Mevlut Ozgur Taskapilioglu, Berrin Tunca, Ahmet Bekar, Hilal Demirci, Hasan Kocaeli, Secil Ak Aksoy, Unal Egeli, Gulsah Cecener, Sahsine Tolunay
Patients with glioblastoma multiforme (GBM) that are cancer stem-cell-positive (GSC [+]) essentially cannot benefit from anti-angiogenic or anti-invasive therapy. In the present study, the potential anti-angiogenic and anti-invasive effects of Olea europaea (olive) leaf extract (OLE) were tested using GSC (+) tumours. OLE (2mg/mL) caused a significant reduction in tumour weight, vascularisation, invasiveness and migration (p=0.0001, p<0.001, p=0.004; respectively) that was associated with reducing the expression of VEGFA, MMP-2 and MMP-9...
April 15, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28419296/urinary-podocyte-and-tgf-%C3%AE-1-mrna-as-markers-for-disease-activity-and-progression-in-anti-glomerular-basement-membrane-nephritis
#7
Akihiro Fukuda, Akihiro Minakawa, Yuji Sato, Takashi Iwakiri, Shuji Iwatsubo, Hiroyuki Komatsu, Masao Kikuchi, Kazuo Kitamura, Roger C Wiggins, Shouichi Fujimoto
Background.: Podocyte depletion causes glomerulosclerosis, with persistent podocyte loss being a major factor driving disease progression. Urinary podocyte mRNA is potentially useful for monitoring disease progression in both animal models and in humans. To determine whether the same principles apply to crescentic glomerular injury, a rat model of anti-glomerular basement membrane (anti-GBM) nephritis was studied in parallel with a patient with anti-GBM nephritis. Methods...
April 17, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28412744/mitochondrial-vdac1-based-peptides-attacking-oncogenic-properties-in-glioblastoma
#8
Anna Shteinfer-Kuzmine, Tasleem Arif, Yakov Krelin, Shambhoo Sharan Tripathi, Avijit Paul, Varda Shoshan-Barmatz
Glioblastoma multiforme (GBM), a primary brain malignancy characterized by high morbidity, invasiveness, proliferation, relapse and mortality, is resistant to chemo- and radiotherapies and lacks effective treatment. GBM tumors undergo metabolic reprograming and develop anti-apoptotic defenses. We targeted GBM with a peptide derived from the mitochondrial protein voltage-dependent anion channel 1 (VDAC1), a key component of cell energy, metabolism and apoptosis regulation. VDAC1-based cell-penetrating peptides perturbed cell energy and metabolic homeostasis and induced apoptosis in several GBM and GBM-derived stem cell lines...
February 17, 2017: Oncotarget
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
#9
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/28410377/plasma-from-patients-with-anti-glomerular-basement-membrane-disease-could-recognize-microbial-peptides
#10
Jian-Nan Li, Xiaoyu Jia, Yongqiang Wang, Can Xie, Taijiao Jiang, Zhao Cui, Ming-Hui Zhao
Infection has long been suspected as a trigger of autoimmune diseases, and molecular mimicry mechanism was hypothesized in this study. Microbe originated peptides were searched from the Uniprot database based on a previous defined critical amino acid motif within α3129-150, isoleucine137, tryptophan140, glycine142, phenylalanine 143 and phenylalanine 145. 23826 microbial peptides were identified using our searching strategy, among which seven were related with human infections. Circulating IgG and IgM antibodies against the seven microbial peptides were detected using ELISA in 76 patients with anti-GBM disease...
2017: PloS One
https://www.readbyqxmd.com/read/28404866/combined-antiangiogenic-and-anti-pd-l1-therapy-stimulates-tumor-immunity-through-hev-formation
#11
Elizabeth Allen, Arnaud Jabouille, Lee B Rivera, Inge Lodewijckx, Rindert Missiaen, Veronica Steri, Kevin Feyen, Jaime Tawney, Douglas Hanahan, Iacovos P Michael, Gabriele Bergers
Inhibitors of VEGF (vascular endothelial growth factor)/VEGFR2 (vascular endothelial growth factor receptor 2) are commonly used in the clinic, but their beneficial effects are only observed in a subset of patients and limited by induction of diverse relapse mechanisms. We describe the up-regulation of an adaptive immunosuppressive pathway during antiangiogenic therapy, by which PD-L1 (programmed cell death ligand 1), the ligand of the negative immune checkpoint regulator PD-1 (programmed cell death protein 1), is enhanced by interferon-γ-expressing T cells in distinct intratumoral cell types in refractory pancreatic, breast, and brain tumor mouse models...
April 12, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28403904/pre-existing-chronic-interstitial-pneumonia-is-a-poor-prognostic-factor-of-goodpasture-s-syndrome-a-case-report-and-review-of-the-literature
#12
Hiroki Tashiro, Koichiro Takahashi, Yuki Ikeda, Saori Uchiumi, Makoto Fukuda, Miyazono Motoaki, Shinya Kimura, Naoko Sueoka-Aragane
BACKGROUND: Goodpasture's syndrome is a rare disease that is characterized by rapidly progressive glomerulonephritis and diffuse alveolar hemorrhage. CASE PRESENTATION: A 71-year-old Japanese man who had chronic interstitial pneumonia was diagnosed as having Goodpasture's syndrome. Both anti-glomerular basement membrane antibody and myeloperoxidase anti-neutrophil cytoplasmic antibody were increased. Despite intensive treatments, including mechanical ventilation, he died from respiratory failure...
April 13, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28401486/dual-treatment-with-shikonin-and-temozolomide-reduces-glioblastoma-tumor-growth-migration-and-glial-to-mesenchymal-transition
#13
Diana Matias, Joana Balça-Silva, Luiz Gustavo Dubois, Bruno Pontes, Valéria Pereira Ferrer, Luciane Rosário, Anália do Carmo, Juliana Echevarria-Lima, Ana Bela Sarmento-Ribeiro, Maria Celeste Lopes, Vivaldo Moura-Neto
PURPOSE: Glioblastomas (GBM) comprise 17% of all primary brain tumors. These tumors are extremely aggressive due to their infiltrative capacity and chemoresistance, with glial-to-mesenchymal transition (GMT) proteins playing a prominent role in tumor invasion. One compound that has recently been used to reduce the expression of these proteins is shikonin (SHK), a naphthoquinone with anti-tumor properties. Temozolomide (TMZ), the most commonly used chemotherapeutic agent in GBM treatment, has so far not been studied in combination with SHK...
April 11, 2017: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/28396979/nanoparticulate-tetrac-inhibits-growth-and-vascularity-of-glioblastoma-xenografts
#14
Thangirala Sudha, Dhruba J Bharali, Stewart Sell, Noureldien H E Darwish, Paul J Davis, Shaker A Mousa
Thyroid hormone as L-thyroxine (T4) stimulates proliferation of glioma cells in vitro and medical induction of hypothyroidism slows clinical growth of glioblastoma multiforme (GBM). The proliferative action of T4 on glioma cells is initiated nongenomically at a cell surface receptor for thyroid hormone on the extracellular domain of integrin αvβ3. Tetraiodothyroacetic acid (tetrac) is a thyroid hormone derivative that blocks T4 action at αvβ3 and has anticancer and anti-angiogenic activity. Tetrac has been covalently bonded via a linker to a nanoparticle (Nanotetrac, Nano-diamino-tetrac, NDAT) that increases the potency of tetrac and broadens the anticancer properties of the drug...
April 10, 2017: Hormones & Cancer
https://www.readbyqxmd.com/read/28391344/is-there-a-role-for-tnf%C3%AE-blockade-in-anca-associated-vasculitis-and-glomerulonephritis
#15
Stephen P McAdoo, Charles D Pusey
Tumour necrosis factor alpha (TNFα) is a cytokine that is pivotal in the inflammatory response. Blockade of TNFα has been shown to be effective in a number of human autoimmune diseases, including rheumatoid arthritis, raising the question of whether this approach may be effective in inflammatory kidney disease, such as ANCA-associated vasculitis (AAV). In AAV, there is considerable evidence for the role of TNFα in the pathophysiology of disease, including increased expression of TNFα mRNA in leucocytes and in renal tissue...
January 1, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28391340/targeting-the-tyrosine-kinase-signalling-pathways-for-treatment-of-immune-mediated-glomerulonephritis-from-bench-to-bedside-and-beyond
#16
Terry King-Wing Ma, Stephen P McAdoo, Frederick Wai Keung Tam
Glomerulonephritis (GN) affects patients of all ages and is an important cause of morbidity and mortality. Non-selective immunosuppressive drugs have been used in immune-mediated GN but often result in systemic side effects and occasionally fatal infective complications. There is increasing evidence from both preclinical and clinical studies that abnormal activation of receptor and non-receptor tyrosine kinase signalling pathways are implicated in the pathogenesis of immune-mediated GN. Activation of spleen tyrosine kinase (SYK), Bruton's tyrosine kinase (BTK), platelet-derived growth factor receptor (PDGFR), epidermal growth factor receptor (EGFR) and discoidin domain receptor 1 (DDR1) have been demonstrated in anti-GBM disease...
January 1, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28391333/clinical-trials-in-minimal-change-disease
#17
Pietro Ravani, Enrica Bertelli, Simardeep Gill, Gian Marco Ghiggeri
Minimal change disease (MCD) is a pathological condition characterized by subtle glomerular lesions causing massive and reversible proteinuria that is usually steroid sensitive. Recurrence of symptoms of active disease following successful treatment (including proteinuria, oedema and oliguria) and steroid toxicity requires the use of other drugs to attain or maintain remission. Unresolved MCD is considered the initial step in the pathological pathway leading to focal and segmental glomerulosclerosis (FSGS)...
January 1, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28386317/alisertib-induces-g2-m-arrest-apoptosis-and-autophagy-via-pi3k-akt-mtor-and-p38-mapk-mediated-pathways-in-human-glioblastoma-cells
#18
Zheng Liu, Feng Wang, Zhi-Wei Zhou, He-Chun Xia, Xin-Yu Wang, Yin-Xue Yang, Zhi-Xu He, Tao Sun, Shu-Feng Zhou
Glioblastoma (GBM) is the most common brain tumor with poor response to current therapeutics. Alisertib (ALS), a second-generation selective Aurora kinase A (AURKA) inhibitor, has shown potent anticancer effects on solid tumors in animal studies. This study aimed to investigate the killing effect of ALS on GBM cell line DAOY and the possible underlying mechanisms using both bioinformatic and cell-based approaches. Our molecular docking showed that ALS preferentially bound AURKA over AURKB via hydrogen bond formation, charge interaction, and π-π stacking...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28382508/clinicopathological-characteristics-of-typical-and-atypical-anti-glomerular-basement-membrane-nephritis
#19
REVIEW
Vincenzo L'Imperio, Elena Ajello, Federico Pieruzzi, Manuela Nebuloni, Antonella Tosoni, Franco Ferrario, Fabio Pagni
Anti-glomerular basement membrane (GBM) antibody disease is a rare pathological condition that mainly involves renal and/or pulmonary parenchyma. It is characterized by the presence of circulating anti-GBM antibodies accompanied by a linear deposition of immunoglobulins (Ig) detected through immunofluorescence (IF) technique and typical signs and symptoms of organ dysfunction, such as rapidly progressive glomerulonephritis (RPGN) and pulmonary hemorrhage (PH). However, recently atypical forms of anti-GBM disease have been described and the presence of overlapping diseases contributed to make its diagnosis challenging...
April 5, 2017: Journal of Nephrology
https://www.readbyqxmd.com/read/28380416/actin-cytoskeleton-regulator-arp2-3-complex-is-required-for-dll1-activating-notch1-signaling-to-maintain-the-stem-cell-phenotype-of-glioma-initiating-cells
#20
Chen Zhang, Long Hai, Meng Zhu, Shengping Yu, Tao Li, Yu Lin, Bo Liu, Xingchen Zhou, Lei Chen, Pengfei Zhao, Hua Zhou, Yubao Huang, Kai Zhang, Bingcheng Ren, Xuejun Yang
Glioblastoma (GBM) is the most common and lethal primary intracranial tumor. Actin cytoskeleton regulator Arp2/3 complex stimulates glioma cell motility and migration, and thus triggers tumor invasion. However, little is known regarding the role of actin cytoskeleton in maintaining the stem cell phenotype. Here, we showed that Arp2/3 complex improved stem cell phenotype maintenance through sustaining the activated Notch signaling. ShRNA targeting Notch ligand Delta-like 1 (DLL1) decreased CD133 and Nestin expression, and impaired the self-renewal ability of CD133+ U87-MG and U251-MG glioma cells, indicating DLL1/Notch1 signaling promoted stem cell phenotype maintenance...
March 23, 2017: Oncotarget
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