Abstract
Tripolinolate A as a new bioactive phenolic ester was previously isolated from a halophyte
of Tripolium pannonicum. However, the in vitro and in vivo anti-glioma effects and mechanism of tripolinolate A have not been investigated.
This study has demonstrated that (1) tripolinolate A inhibited the proliferation of
different glioma cells with IC50 values of 7.97 to 14.02 µM and had a significant inhibitory effect on the glioma
growth in U87MG xenograft nude mice, (2) tripolinolate A induced apoptosis in glioma
cells by downregulating the expressions of antiapoptotic proteins and arrested glioma
cell cycle at the G2/M phase by reducing the expression levels of cell cycle regulators, and (3) tripolinolate
A also remarkably reduced the expression levels of several glioma metabolic enzymes
and transcription factors. All data together suggested that tripolinolate A had significant
in vitro and in vivo anti-glioma effects and the regulation of multiple tumor-related regulators and transcription
factors might be responsible for the activities of tripolinolate A against glioma.
Key words
tripolinolate A -
Tripolium pannonicum
- Compositae - anti-glioma - apoptosis - cell cycle arrest - glioma metabolic enzymes