Objective(s): Glioblastoma multiforme (GBM) is one of the most lethal forms of human cancer and temozolomide (TMZ) is currently part of the standard treatment for this disease. Combination therapy using natural substances can enhance the anti-cancer activity of TMZ. The purpose of this study was to evaluate the effect of TMZ in combination with thymoquinone (TQ) on human GBM cell line (U87MG). ...

OBJECTIVE To study the effects and associated mechanisms of caffeine on cell viability, cycle dynamics, proliferation and apoptosis both in glioblastoma C6 and U87MG cells. MATERIALS AND METHODS Cell livability in presence or absence of caffeine was detected by the methyl thiazolyl tetrazolium (MTT) colorimetric assay. Flow cytometric analysis was conducted to investigate the cell cycle dynam...

We examined the effect of p53 inactivation on the response of U87MG glioma cells to 1,3-bis(2-chloroethyl)-1-nitrosourea (BCNU). These studies were motivated by three observations: (a) some human astrocytomas are sensitive to BCNU and some are resistant; (b) chemosensitive astrocytomas are more likely to be found in young adults whose tumors are more likely to harbor a p53 mutation; and (c) mou...

The prognosis of patients suffering from glioblastoma [also referred to as glioblastoma multiforme (GBM)] is dismal despite multimodal therapy. Chemotherapy with temozolomide may suppress tumor growth for a certain period of time (a few months); however, invariable tumor recurrence suggests that glioblastoma initiating cells (GICs) render these tumors persistant. Thus, the understanding of the ...

objective:glioblastoma is an invasive tumor of the central nervous system. epigenetic therapy of cancer is potentially very useful in reversing some of cancer defects due to reversibility of epigenetic alterations. meg3 is a tumor suppressor long non-coding rna (lncrna) that expresses in the majority of normal tissues. methylation of the meg3 promoter region elicits a decrease in its expression...

Macrophage colony stimulating factor (MCSF) regulates growth, proliferation and differentiation of haematopoietic cell lineages. Many cancers are known to secrete high level of MCSF, which recruit macrophages into the tumour micro-environment, supporting tumour growth. Herein, we report the cloning of MCSF and subsequent generation of U87MG expressing MCSF stable cell line (U87-MCSF). Cytotoxic...

In this study, we investigate whether arsenite-induced DNA damage leads to p53-dependent premature senescence using human glioblastoma cells with p53-wild type (U87MG-neo) and p53 deficient (U87MG-E6). A dose dependent relationship between arsenite and reduced cell growth is demonstrated, as well as induced γH2AX foci formation in both U87MG-neo and U87MG-E6 cells at low concentrations of arsen...

BACKGROUND Integrins are a family of transmembrane adhesion proteins that mediate cell adhesion and intracellular signaling. Integrin-αvβ3 is expressed on the surface of human glioblastoma cells, and can be further induced by chemical stress. The Arg-Gly-Asp (RGD) motif-containing peptides are specifically bound to integrin-αvβ3, and to inhibit neovasculature underlying competition to normal ex...

The effects of a new epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor, tyrphostin AG 1478, were tested on three related human glioma cell lines: U87MG, which expressed endogenous wild-type (wt) EGFR, and two retrovirally infected U87MG cell populations which over-expressed either wt (U87MG.wtEGFR) or truncated EGFR (U87MG. delta EGFR). Although AG 1478 inhibited cell growth, DN...

The effects of connective tissue growth factor (CTGF) gene silencing on the radiosensitivity of glioblastoma cells (GBM) were investigated. The lentivirus-mediated short hairpin RNA (shRNA) expression vector targeting CTGF was constructed and transinfected into U87MG human GBM cell line. The CTGF gene expression in U87MG cells was significantly down-regulated. After irradiation with 6 MV X-rays...