Filtered By:
Specialty: Biochemistry
Condition: Brain Tumor

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

Order by Relevance | Date

Total 34 results found since Jan 2013.

BNIP3 contributes to silibinin-induced DNA double strand breaks in glioma cells via inhibition of mTOR
In this study, we find that silibinin triggers DNA DSBs, ROS accumulation and expressional upregulation of BNIP3 in glioma cells. Mitigation of ROS with antioxidant GSH significantly inhibits silibinin-induced DNA DSBs and glioma cell death. Then, we find knockdown of BNIP3 with SiRNA obviously prevents silibinin-induced DNA DSBs and ROS accumulation. Mechanistically, BNIP3 knockdown not only reverses silibinin-triggered depletion of cysteine and GSH via maintaining xCT level, but also abrogates catalase decrease. Notably, silibinin-induced dephosphorylation of mTOR is also prevented when BNIP3 is knocked down. Given that ...
Source: Biochemical and Biophysical Research communications - December 9, 2021 Category: Biochemistry Authors: Cong Hua Xuanzhong Wang Shipeng Liang Xi Chen Chen Li Guangqiang You Chongcheng Wang Tianfei Luo Zhenchuan Wang Pengfei Ge Source Type: research

ILK silencing inhibits migration and invasion of more invasive glioblastoma cells by downregulating ROCK1 and Fascin-1.
In this study, we used two brain cell lines, the non-invasive neuroglioma H4 cells, and the highly invasive glioblastoma A172 cells, which express ILK in much higher levels than H4. We studied the effect of ILK silencing on the metastatic behavior of glioblastoma cells in vitro and elucidate the underlying molecular mechanism. We showed that siRNA-mediated silencing of ILK inhibits cell migration and invasion of the highly invasive A172 cells while it does not affect the migratory and invasive capacity of H4 cells. These data were also supported by respective changes in the expression of Rho-associated kinase 1 (ROCK1), fa...
Source: Molecular and Cellular Biochemistry - June 5, 2020 Category: Biochemistry Authors: Louca M, Zaravinos A, Stylianopoulos T, Gkretsi V Tags: Mol Cell Biochem Source Type: research

RSL3 induced autophagic death in glioma cells via causing glycolysis dysfunction.
In this study, we found RSL3 inhibited the viabilities of glioma cells and induced glioma cell death in a dose-dependent manner. In vitro studies revealed that RSL3-induced cell death was accompanied with the changes of autophagy-associated protein levels and was alleviated by pretreatment of 3-Methyladenine, bafilomycin A1 and knockdown of ATG5 with siRNA. The ATP and pyruvate content as well as the protein levels of HKII, PFKP, PKM2 were decreased in cells treated by RSL3, indicating that RSL3 induced glycolysis dysfunction in glioma cells. Moreover, supplement of exterior sodium pyruvate, which was a final product of g...
Source: Biochemical and Biophysical Research communications - August 20, 2019 Category: Biochemistry Authors: Wang X, Lu S, He C, Wang C, Wang L, Piao M, Chi G, Luo Y, Ge P Tags: Biochem Biophys Res Commun Source Type: research

CREPT promotes glioma cell proliferation and invasion by activating Wnt/ β-catenin pathway and is a novel target of microRNA-596.
CREPT promotes glioma cell proliferation and invasion by activating Wnt/β-catenin pathway and is a novel target of microRNA-596. Biochimie. 2019 Apr 14;: Authors: Wei M, Cao Y, Jia D, Zhao H, Zhang L Abstract Cell cycle-related and expression elevated protein in tumor (CREPT) is emerging as a novel cancer-related gene that is dysregulated in many kinds of malignancies. However, the expression and biological role of CREPT in glioma remains unclear. In the present study, we aimed to explore the potential function and regulation mechanism of CREPT in glioma. Results showed that CRETP expression was sign...
Source: Biochimie - April 13, 2019 Category: Biochemistry Authors: Wei M, Cao Y, Jia D, Zhao H, Zhang L Tags: Biochimie Source Type: research

Hydroxyl-Rich PGMA-Based Cationic Glycopolymers for Intracellular siRNA Delivery: Biocompatibility and Effect of Sugar Decoration Degree.
Abstract The ErbB family of proteins, structurally related to the epidermal growth factor receptor (EGFR), is found to be over-expressed in many cancers such as gliomas, lung and cervical carcinomas. Gene therapy allows to modify the expression of genes like ErbB and has been a promising strategy to target oncogenes and tumor suppressor genes. In the current work, novel hydroxyl-rich polyglycidyl methacrylate (PGMA)-based cationic glycopolymers were designed for intracellular small interfering RNA (siRNA) delivery to silence the EGFR gene. The cationic polymers with different sugar decoration degrees (0%, 9%, and ...
Source: Biomacromolecules - April 9, 2019 Category: Biochemistry Authors: Chen Y, Diaz-Dussan D, Peng YY, Narain R Tags: Biomacromolecules Source Type: research

CircRNA hsa-circ-0014359 promotes glioma progression by regulating miR-153/PI3K signaling.
Abstract RNA back splicing produces circRNA, a new type of non-coding RNA. Studies have indicated that circRNAs play important roles in malignant tumors of the central nervous system. Here, we aimed to evaluate the expression of the circRNA, hsa-circ-0014359 (circ-0014359) in human glioma cell lines to assess its function in glioma progression and prognosis. The expression of circ-0014359 was increased in T98G and SHG44 cancer cell lines and glioma tissues from patients, when compared with control cells and tissue. SiRNA-mediated silencing of circ-0014359 potently inhibited cell viability, migration, invasion, and...
Source: Biochemical and Biophysical Research communications - February 8, 2019 Category: Biochemistry Authors: Shi F, Shi Z, Zhao Y, Tian J Tags: Biochem Biophys Res Commun Source Type: research

Silver nanoparticle-induced hormesis of astroglioma cells: A Mu-2-related death-inducing protein-orchestrated modus operandi.
In this study, we investigated whether silver nanoparticles (AgNPs) induce hormesis in astroglioma cells and the possible involvement of MuD in AgNP-induced hormesis. AgNPs exhibited cytotoxic effects on cell proliferation in a dose-dependent manner and increased MuD expression was observed during AgNP-induced astroglioma hormesis. Studies using MuD-knockout cells and MuD siRNA transfection showed that MuD might influence cell viability upon AgNP treatment. In addition, apoptotic cell population and production of reactive oxygen species in the absence of MuD were significantly increased. The phosphorylation of two mitogen-...
Source: International Journal of Biological Macromolecules - June 2, 2018 Category: Biochemistry Authors: Choi JH, Min WK, Gopal J, Lee YM, Muthu M, Chun S, Oh JW Tags: Int J Biol Macromol Source Type: research

Cell-penetrating peptides for siRNA delivery to glioblastomas
In conclusion, we have established an efficient non-covalently complexed carrier (PF14:TG1) for siRNA delivery to human glioblastoma cells (U87), showing a significant two-fold increase in gene-silencing efficiency compared to the parent peptide PF14 and also improved specificity to U87 cells compared to non-glioma targeted cells. Graphical abstract
Source: Peptides - May 1, 2018 Category: Biochemistry Source Type: research

Effects of siRNA-dependent knock-down of cardiolipin synthase and tafazzin on mitochondria and proliferation of glioma cells.
This study aimed to separate the effects of CL content and CL composition from cellular free fatty acid distribution on bioenergetics and proliferation in C6 glioma cells. To this end, cardiolipin synthase and the CL remodelling enzyme, tafazzin, were knocked-down by siRNA in C6 cells. After 72 h of cultivation, we analysed CL composition by means of LC/MS/MS, distribution of cellular fatty acids by means of gas chromatography, and determined oxygen consumption and proliferation. Knock-down of cardiolipin synthase affected the cellular CL content in the presence of linoleic acid (LA) in the culture medium. Knock-down of ta...
Source: Biochimica et Biophysica Acta - January 8, 2018 Category: Biochemistry Authors: Ohlig T, Le DV, Gardemann A, Wolke C, Gürtler S, Peter D, Schild L, Lendeckel U Tags: Biochim Biophys Acta Source Type: research

Knockdown of Rab21 inhibits proliferation and induces apoptosis in human glioma cells.
Conclusions: We inferred that Rab21 silencing can induce apoptosis and inhibit proliferation in human glioma cells, indicating that Rab21 might act as an oncogene and serve as a novel target for glioma therapy. PMID: 29270202 [PubMed - in process]
Source: Cellular and Molecular Biology Letters - December 24, 2017 Category: Biochemistry Authors: Ge J, Chen Q, Liu B, Wang L, Zhang S, Ji B Tags: Cell Mol Biol Lett Source Type: research

Increased expression of platelet-derived growth factor associated protein-1 is associated with PDGF-B mediated glioma progression.
This study aimed to characterize the role of PDAP-1 in PDGF-mediated glioma proliferation. The expression of PDAP-1 was observed to be significantly increased (p<0.05) in grade IV glioma tissue and cell lines compared to grade III. siRNA-mediated knockdown of PDAP-1 reduced the expression of PDGF-B and its downstream genes (Akt1/Protein kinase B (PKB) and phosphoinositide-dependent kinase-1 (PDK1) by up to 50%. In PDAP-1 knockdown glioma cells, more than a twofold reduction was also observed in the level of phosphorylated Akt. Interestingly, knockdown of PDAP-1 in combination with PDGF-B antibody inhibited glioma cell p...
Source: The International Journal of Biochemistry and Cell Biology - July 18, 2016 Category: Biochemistry Authors: Sharma VK, Singh A, Srivastava SK, Kumar V, Gardi NL, Nalwa A, Dinda AK, Chattopadhyay P, Yadav S Tags: Int J Biochem Cell Biol Source Type: research

G9a inhibition induced PKM2 regulates autophagic responses.
Abstract Epigenetic regulation by histone methyltransferase G9a is known to control autophagic responses. As the link between autophagy and metabolic homeostasis is widely accepted, we investigated whether G9a affects metabolic circuitries to affect autophagic response in glioma cells. Both pharmacological inhibition and siRNA mediated knockdown of G9a increased autophagy marker LC3B in glioma cells. G9a inhibitor BIX-01294 (BIX) induced Akt-dependent increase in HIF-1α expression and activity. Inhibition of Akt-HIF-1α axis reversed BIX-mediated (i) increase in LC3B expression and (ii) decrease in Yes-associated...
Source: The International Journal of Biochemistry and Cell Biology - July 10, 2016 Category: Biochemistry Authors: Ahmad F, Dixit D, Joshi SD, Sen E Tags: Int J Biochem Cell Biol Source Type: research

Silencing of epidermal growth factor, latrophilin and seven transmembrane domain-containing protein 1 (ELTD1) via siRNA induced cell death in glioblastoma.
In this study we aim to analyse whether this receptor may be used as a target molecule in glioblastoma therapy. Our results showed that small interfering RNA silencing ELTD1 caused cytotoxicity in glioblastoma cells. We also found that PDGFR, VEGFR and their common PI3K/mTOR intracellular pathway inactivation induced cytotoxicity in glioblastoma cells. Further, we found high percent of cytotoxicity in a low passage glioblastoma cell line after BEZ235 (a dual inhibitor of PI3K/mTOR pathway) treatment at nanomolar concentrations, compared to AG1433 (a PDGFR inhibitor) and SU1498 (a VEGFR inhibitor) that were only cytotoxic a...
Source: Journal of Immunoassay and Immunochemistry - July 6, 2016 Category: Biochemistry Tags: J Immunoassay Immunochem Source Type: research

Frequent Nek1 overexpression in human gliomas.
Abstract Never in mitosis A (NIMA)-related kinase 1 (Nek1) regulates cell cycle progression to mitosis. Its expression and potential functions in human gliomas have not been studied. Here, our immunohistochemistry (IHC) assay and Western blot assay results showed that Nek1 expression was significantly upregulated in fresh and paraffin-embedded human glioma tissues. Its level in normal brain tissues was low. Nek1 overexpression in human gliomas was correlated with the proliferation marker (Ki-67), tumor grade, Karnofsky performance scale (KPS) and more importantly, patients' poor survival. Further studies showed th...
Source: Biochemical and Biophysical Research communications - May 28, 2016 Category: Biochemistry Authors: Zhu J, Cai Y, Liu P, Zhao W Tags: Biochem Biophys Res Commun Source Type: research