Fsk and IBMX inhibit proliferation and proapoptotic of glioma stem cells via activation of cAMP signaling pathway

Journal of Cellular Biochemistry
Peng LvJunjie Xu

Abstract

We aimed to find out the underlying mechanism of forskolin (Fsk) and 3-isobutyl-1-methylxanthine (IBMX) on glioma stem cells (GSCs). The expression of cAMP-related protein CREB and pCREB as well as apoptosis-related proteins were detected through Western blot analysis. The level of proliferation and growth rate of human GSCs was measured through thiazolyl blue tetrazolium bromide assay and stem cells forming sphere assay. The apoptosis-related gene expression was measured through reverse transcription-polymerase chain reaction. cAMP signaling pathway was activated in GSCs with Fsk-IBMX administration. Fsk-IBMX could inhibit the proliferation as well as invasion and promote the apoptosis of U87 cells. Besides, U0126 could inhibit MAPK signaling pathway to increase the sensitivity of GSCs to cAMP signaling pathway. As a result, Fsk-IBMX combined with U0126 had more negative effect on GSCs. The relationship of cAMP and MAPK signaling pathway in GSCs may provide a potential therapeutic strategy in glioma.

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Citations

Apr 30, 2021·Frontiers in Cell and Developmental Biology·Chunhai ChenLei Zhang
May 28, 2019·Life Sciences·Ankita Mehta, Bhoomika M Patel

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