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In vitro cytotoxicity of flavonoids against MK2 and C6 tumour cells
I Sánchez1, J Calderón, B Ruiz
1Departamento Biología Molecular, Instituto de Investigaciones Biomédicas, UNAM, Circuito Interior, Ciudad Universitaria, Coyoacán 04510 México, D.F.
Abstract:
The cytotoxic effect of five flavonoids isolated from the aerial parts of the Asteraceae family of plants were studied in vitro using LLC-MK2 and C6 glial cells. Agehoustin A was shown to be cytotoxic for both cells (71% or 67% cell death). Agehoustin B and artemetin, which lack a methoxy group at C-8 (RI), were not cytotoxic for the cells (19% and 16% cell death). The three flavonoids showed considerable suppressive effects on LLC-MK2 and C6 cell growth. Lucidin-dimethylether and gnaphaliin were also not cytotoxic for cells but they had no suppressive effect on cell growth. The results show a structure-cytostatic activity relationship. We suggest that the methoxy group on C-8 and on the B ring are responsible for death cell.
Insights
Five plant flavonoids were tested for their cytotoxic effects on cancer cells. Agehoustin A demonstrated significant cell death, while others showed suppressive effects on cell growth, indicating a structure-activity relationship for cytotoxic effects.
Area of Science:
- Phytochemistry
- Cell Biology
- Pharmacology
Background:
- Flavonoids from the Asteraceae family are known for diverse biological activities.
- Understanding the structure-activity relationship of these compounds is crucial for drug development.
Purpose of the Study:
- To investigate the in vitro cytotoxic and cytostatic effects of five selected flavonoids.
- To establish a structure-activity relationship for the cytotoxic effects of these flavonoids.
Main Methods:
- In vitro cytotoxic assays were performed on LLC-MK2 and C6 glial cell lines.
- Five flavonoids isolated from Asteraceae plants were evaluated.
- Cell death and cell growth suppression were quantified.
Main Results:
- Agehoustin A exhibited significant cytotoxicity, causing 71% and 67% cell death in LLC-MK2 and C6 cells, respectively.
- Agehoustin B and artemetin, lacking a C-8 methoxy group, showed minimal cytotoxicity (19% and 16% cell death) but suppressed cell growth.
- Lucidin-dimethylether and gnaphaliin were not cytotoxic and did not suppress cell growth.
Conclusions:
- A clear structure-cytostatic activity relationship was observed among the tested flavonoids.
- The presence of a methoxy group at C-8 and on the B ring appears critical for inducing cell death.