Journal
CELLS
Volume 10, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/cells10123438
Keywords
glioblastoma; GPER agonist; G-1; microtubule-targeting agent; microtubule dynamics; proliferation; temozolomide
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Glioblastoma is the most common and aggressive brain tumor in adults, affecting men more than women. Research suggests that the hormone estrogen plays a protective role in GBM female patient survival, and that the GPER agonist G-1 can inhibit cell proliferation independent of GPER, while enhancing the efficacy of standard chemotherapy.
Glioblastoma (GBM) is the most common brain tumor in adults, which is very aggressive, with a very poor prognosis that affects men twice as much as women, suggesting that female hormones (estrogen) play a protective role. With an in silico approach, we highlighted that the expression of the membrane G-protein-coupled estrogen receptor (GPER) had an impact on GBM female patient survival. In this context, we explored for the first time the role of the GPER agonist G-1 on GBM cell proliferation. Our results suggested that G-1 exposure had a cytostatic effect, leading to reversible G2/M arrest, due to tubulin polymerization blockade during mitosis. However, the observed effect was independent of GPER. Interestingly, G-1 potentiated the efficacy of temozolomide, the current standard chemotherapy treatment, since the combination of both treatments led to prolonged mitotic arrest, even in a temozolomide less-sensitive cell line. In conclusion, our results suggested that G-1, in combination with standard chemotherapy, might be a promising way to limit the progression and aggressiveness of GBM.
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