Filtered By:
Cancer: Astrocytoma

This page shows you your search results in order of date. This is page number 2.

Order by Relevance | Date

Total 44 results found since Jan 2013.

LY294002 and sorafenib as inhibitors of intracellular survival pathways in the elimination of human glioma cells by programmed cell death
AbstractGliomas are aggressive brain tumors with very high resistance to chemotherapy throughout the overexpression of multiple intracellular survival pathways. Therefore, the aim of the present study was to investigate for the first time the anticancer activity of LY294002, phosphatidylinositol 3-kinase (PI3K) inhibitor and sorafenib, and rapidly accelerated fibrosarcoma kinase (Raf) inhibitor in the elimination of human glioma cells by programmed cell death. MOGGCCM (anaplastic astrocytoma, III) and T98G (glioblastoma multiforme, IV) cell lines incubated with LY294002 and/or sorafenib were used in the experiments. Simult...
Source: Cell and Tissue Research - July 8, 2021 Category: Cytology Source Type: research

TRPM7 Induces Tumorigenesis and Stemness Through Notch Activation in Glioma
In this study, we determined the major contributor(s) to TRPM7 mediated glioma stemness by further deciphering each individual Notch signaling. We first determined whether TRPM7 is an oncotarget in glioblastoma multiforme (GBM) using the Oncomine database. Next, we determined whether TRPM7 silencing by siRNA TRPM7 (siTRPM7) induces cell growth arrest or apoptosis to reduce glioma cell proliferation using cell cycle analysis and annexin V staining assay. We then examined the correlations between the expression of TRPM7 and Notch signaling activity as well as the expression of GSC markers CD133 and ALDH1 in GBM by downregula...
Source: Frontiers in Pharmacology - December 14, 2020 Category: Drugs & Pharmacology Source Type: research

Molecules, Vol. 25, Pages 5192: Antiglioma Potential of Coumarins Combined with Sorafenib
ubowicz-Gil Coumarins, which occur naturally in the plant kingdom, are diverse class of secondary metabolites. With their antiproliferative, chemopreventive and antiangiogenetic properties, they can be used in the treatment of cancer. Their therapeutic potential depends on the type and location of the attachment of substituents to the ring. Therefore, the aim of our study was to investigate the effect of simple coumarins (osthole, umbelliferone, esculin, and 4-hydroxycoumarin) combined with sorafenib (specific inhibitor of Raf (Rapidly Accelerated Fibrosarcoma) kinase) in programmed death induction in human glioblastom...
Source: Molecules - November 8, 2020 Category: Chemistry Authors: Joanna Sumorek-Wiadro Adrian Zaj ąc Ewa Langner Krystyna Skalicka-Wo źniak Aleksandra Maciejczyk Wojciech Rzeski Joanna Jakubowicz-Gil Tags: Article Source Type: research

CD164 regulates proliferation, progression, and invasion of human glioblastoma cells.
Authors: Wang CC, Hueng DY, Huang AF, Chen WL, Huang SM, Yi-Hsin Chan J Abstract Grade IV astrocytoma, also known as glioblastoma multiforme (GBM), is the most common and aggressive intracranial glial tumor. GBM is associated with very poor survival and effective treatments have remained elusive so far. Mounting evidence indicates that CD164 contributes to stemness and tumorigenesis in normal cells and is overexpressed in various tumor types, including glioblastoma. Using tissue microarray immunohistochemistry, we show that there is a significant correlation between CD164 expression and glioma type and grade. Deple...
Source: Oncotarget - April 23, 2019 Category: Cancer & Oncology Tags: Oncotarget Source Type: research

High-Throughput Characterization of Viral and Cellular Protein Expression Patterns During JC Polyomavirus Infection
Discussion The study of viral infections in vitro has provided innumerable advances to the field of virology. However, the lack of rapid and efficient screening tools has hindered research progress for some viruses, like JCPyV (Houff et al., 1983; Zu Rhein, 1983; Assetta and Atwood, 2017). To overcome this challenge, the development of high-throughput analyses is needed to help aid in the production of large data sets and generation of multiple lines of inquiry. Current methodologies for analyzing JCPyV infectivity predominantly rely on manual quantitation of infection by indirect immunodetection of viral proteins by epif...
Source: Frontiers in Microbiology - April 16, 2019 Category: Microbiology Source Type: research

Cell Division Cycle Associated 7 Like Predicts Unfavorable Prognosis and Promotes Invasion in Glioma
ConclusionsCDCA7L is highly expressed in human glioma tissues and a high CDCA7L expression level predicts the dismal prognosis for glioma patients. Moreover, CDCA7L can promote glioma invasion, which can serve as an independent potential prognostic biomarker for glioma patients.
Source: Pathology Research and Practice - October 24, 2018 Category: Pathology Source Type: research

Cell division cycle associated 7 like predicts unfavorable prognosis and promotes invasion in glioma.
CONCLUSIONS: CDCA7L is highly expressed in human glioma tissues and a high CDCA7L expression level predicts the dismal prognosis for glioma patients. Moreover, CDCA7L can promote glioma invasion, which can serve as an independent potential prognostic biomarker for glioma patients. PMID: 30389317 [PubMed - as supplied by publisher]
Source: Pathology, Research and Practice - October 24, 2018 Category: Pathology Authors: Shen FZ, Li XS, Ma JW, Wang XY, Zhao SP, Meng L, Liang SF, Zhao XL Tags: Pathol Res Pract Source Type: research

Eya2 overexpression promotes the invasion of human astrocytoma through the regulation of ERK/MMP9 signaling.
This study investigated the clinical significance and biological roles of Eya2 in human astrocytoma tissues and cell lines. Using immunohistochemistry, we found Eya2 overexpression in 33 out of 90 (36.7%) astrocytoma specimens. The rate of Eya2 overexpression was higher in grade III-IV (48.1%) than in grade Ⅰ+Ⅱ astrocytomas (21.1%). Transfection with an Eya2 expression plasmid was performed in A172 cells with a low endogenous expression of Eya2 and the knockdown of Eya2 was carried out in U251 cells with a high endogenous expression using siRNA. Eya2 overexpression induced A172 cell proliferation and invasion,...
Source: International Journal of Molecular Medicine - September 13, 2017 Category: Molecular Biology Authors: Wen Z, Liang C, Pan Q, Wang Y Tags: Int J Mol Med Source Type: research

Delivery of Small Interfering RNA to Inhibit Vascular Endothelial Growth Factor in Zebrafish Using Natural Brain Endothelia Cell-Secreted Exosome Nanovesicles for the Treatment of Brain Cancer
In this study, we tested whether brain endothelial cell-derived exosomes could deliver siRNA across the blood –brain barrier (BBB) in zebrafish. Natural exosomes were isolated from brain endothelial bEND.3 cell culture media and vascular endothelial growth factor (VEGF) siRNA was loaded in exosomes with the assistance of a transfection reagent. While fluorescence-activated cell flow cytometry and immunocy tochemistry staining studies indicated that wild-type exosomes significantly increased the uptake of fluorescence-labeled siRNA in the autologous brain endothelial cells, decreased fluorescence intensity was observed in...
Source: The AAPS Journal - November 22, 2016 Category: Drugs & Pharmacology Source Type: research

STMC-26. MULTIVALENT CATIONIC LIPOSOMES FOR siRNA TRANSFECTION OF PATIENT DERIVED GLIOMA INITIATING CELLS
Glioma initiating cells (GICs) have been implicated as the root cause of treatment failure and tumor recurrence in glioblastoma multiforme (GBM). Therapeutic targeting of GICs is therefore essential to ensure effective treatment without relapse. A novel approach to modulate protein expression in cancer cells is the delivery of siRNAs using liposomes. However, past attempts to transfect cells using neutral liposomes have proven challenging and inefficient owing to the highly refractory nature of these cells. We therefore sought to develop a multivalent cationic liposome (MVCL) formulation for efficient and reproducible...
Source: Neuro-Oncology - November 6, 2016 Category: Cancer & Oncology Authors: Ravi, V., Madhankumar, A. B. Tags: STEM CELLS Source Type: research

The sarin-like organophosphorus agent bis(isopropyl methyl)phosphonate induces ER stress in human astrocytoma cells.
We examined whether the sarin-like OP agent bis(isopropyl methyl)phosphonate (BIMP), which exhibits toxicity similar to that of sarin, induced ER stress in human astrocytoma CCF-STTG1 cells. Our results demonstrate that BIMP exposure reduced cell viability. Moreover, it induced changes in mitochondrial membrane potential and increased cleavage of caspase 3. Treatment with BIMP increased the mRNA levels of the ER stress marker genes binding immunoglobulin protein (BiP) and the transcription factor C/EBP homologous protein (CHOP). Furthermore, BIMP increased the protein expressions and phosphorylation of BiP, CHOP, and prote...
Source: Journal of Toxicological Sciences - September 27, 2016 Category: Toxicology Tags: J Toxicol Sci Source Type: research

P08.67 Inhibition of MutT homolog 1 (MTH1) in glioblastoma multiforme results in impaired cell migration and tumor growth
Discussion:These results show that MTH1 might play an essential role in both, malignization of glioma and disease progression in recurrent glioblastoma. Moreover, the MTH1 level in patients seems to influence tumor growth and could be targeted by crizotinib indicating a role for potential future therapies.
Source: Neuro-Oncology - September 20, 2016 Category: Cancer & Oncology Authors: Timmer, M., Kannampuzha, S. Tags: P08 Glioblastom and Anaplastic gliomas Source Type: research

Bilirubin-induced ER stress contributes to the inflammatory response and apoptosis in neuronal cells.
Abstract Unconjugated bilirubin (UCB) in newborns may lead to bilirubin neurotoxicity. Few studies investigated the activation of endoplasmic reticulum stress (ER stress) by UCB. We performed an in vitro comparative study using undifferentiated SH-SY5Y, differentiated GI-ME-N neuronal cells and human U87 astrocytoma cells. ER stress and its contribution to inflammation and apoptosis induced by UCB were analyzed. Cytotoxicity, ER stress and inflammation were observed only in neuronal cells, despite intracellular UCB accumulation in all three cell types. UCB toxicity was enhanced in undifferentiated SH-SY5Y cells an...
Source: Archives of Toxicology - August 29, 2016 Category: Toxicology Authors: Qaisiya M, Brischetto C, Jašprová J, Vitek L, Tiribelli C, Bellarosa C Tags: Arch Toxicol Source Type: research

Epithelial Cell Transforming 2 and Aurora Kinase B Modulate Formation of Stress Granule-Containing Transcripts from Diverse Cellular Pathways in Astrocytoma Cells.
Abstract Stress granules are small RNA-protein granules that modify the translational landscape during cellular stress to promote survival. The RhoGTPase RhoA is implicated in the formation of RNA stress granules. Our data demonstrate that the cytokinetic proteins epithelial cell transforming 2 and Aurora kinase B (AurkB) are localized to stress granules in human astrocytoma cells. AurkB and its downstream target histone-3 are phosphorylated during arsenite-induced stress. Chemical (AZD1152-HQPA) and siRNA inhibition of AurkB results in fewer and smaller stress granules when analyzed using high-throughput fluoresc...
Source: The American Journal of Pathology - April 19, 2016 Category: Pathology Authors: Weeks A, Agnihotri S, Lymer J, Chalil A, Diaz R, Isik S, Smith C, Rutka JT Tags: Am J Pathol Source Type: research

Epithelial Cell Transforming 2 and Aurora Kinase B Modulate Formation of Stress Granule–Containing Transcripts from Diverse Cellular Pathways in Astrocytoma Cells
Stress granules are small RNA-protein granules that modify the translational landscape during cellular stress to promote survival. The RhoGTPase RhoA is implicated in the formation of RNA stress granules. Our data demonstrate that the cytokinetic proteins epithelial cell transforming 2 and Aurora kinase B (AurkB) are localized to stress granules in human astrocytoma cells. AurkB and its downstream target histone-3 are phosphorylated during arsenite-induced stress. Chemical (AZD1152-HQPA) and siRNA inhibition of AurkB results in fewer and smaller stress granules when analyzed using high-throughput fluorescent-based cellomics assays.
Source: American Journal of Pathology - April 18, 2016 Category: Pathology Authors: Adrienne Weeks, Sameer Agnihotri, Jenny Lymer, Alan Chalil, Roberto Diaz, Semra Isik, Christian Smith, James T. Rutka Tags: Regular Article Source Type: research