Depletion of Akt2 expression by siRNA also abrogates TWEAK-stimulated glioma cell survival, whereas no effect on glioma cell survival was observed after siRNA-mediated depletion of Akt1 expression.
Herein, the association between therapeutic efficacy and putative proapoptotic activity of low-dose BVZ either alone or in combination with a specific inhibitor of AKT called perifosine (PRF), in a glioma model was investigated.
These results demonstrate that sevoflurane inhibits glioma cell migration and invasion and that these beneficial effects are mediated by the upregulation of miRNA‑637, which suppresses Akt1 expression and activity.
Taken together, our data firstly demonstrated that CREB1-induced FOXD2-AS1 contributed to glioma progression by upregulating AKT1 via competitively binding to miR-185, providing a novel strategy for targeting FOXD2-AS1 as a potential biomarker and a therapeutic target in glioma patients.
The initial characterization of SH-6 included treatment of glioma cells with increasing doses of SH-6 (0.30-30 microM) and examining the effects on AKT signaling proteins by Western blot analyses and in kinase assays with immunoprecipitated AKT1.
The RAS/RAF mitogen-activated protein kinase pathway (MAPK) is highly active in many tumor types including the majority of high-grade gliomas and expression of activated RAS or RAF in neural progenitor cells combined with either AKT activation or Ink4a/Arf loss leads to the development of high-grade gliomas in vivo.
Although signaling from phosphatidylinositol 3-kinase (PI3K) and AKT to mechanistic target of rapamycin (mTOR) is prominently dysregulated in high-grade glial brain tumors, blockade of PI3K or AKT minimally affects downstream mTOR activity in glioma.
SAE1 overexpression induces an increase of the SUMOylation and Ser473 phosphorylation of AKT, which promotes glioma cell growth in vitro and in nude mouse tumor model.
While cross talk between the Wnt/β-catenin and PI3K/AKT signaling pathways has been proposed, the impact of PI3K/AKT inhibition on β-catenin signaling in glioma remains unknown.
In the present study, we confirmed that lncRNA SNHG16 was highly expressed in glioma and may exert oncogenic function as a competing endogenous RNA (ceRNA) to regulate EGFR by sponging of miR-373-3p through activating PI3K/AKT pathway, which providing a new insight of the regulatory network of lncRNA SNHG16 in the development of glioma.
Preclinical data in a pediatric glioma model demonstrated that the combination of perifosine (AKT inhibitor) and temsirolimus (mTOR inhibitor) is more potent at inhibiting the axis than either agent alone.
In conclusion, our study suggests that SPOCK1 promotes proliferation, migration and invasion in glioma cells by activating PI3K/AKT and Wnt/β-catenin pathways, which provides a potential theoretical basis for clinical treatment of glioma.