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All Journal Indonesian Journal of Pharmacology and Therapy
Sitti Ayu Suhartina Yahya
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Immunology & microbiology Medicine & Pharmacology

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Cytotoxic activity of hantap (Sterculia oblongata Mast) leaves extract against breast cancer cells line (MCF7/HER2): the effect on the expression of HER2 mRNA and the apoptosis Sitti Ayu Suhartina Yahya; Mustofa; Woro Rukmi Pratiwi; Adika Suwarman
Indonesian Journal of Pharmacology and Therapy Vol 3 No 1 (2022)
Publisher : Faculty of Medicine, Public Health, and Nursing Universitas Gadjah Mada and Indonesian Pharmacologist Association or Ikatan Farmakologi Indonesia (IKAFARI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijpther.3204

Abstract

Hantap leaves (Sterculia oblongata Mast) has been used traditionally to treat breast cancer in Palu, Central Sulawesi. However, its use is just based on empirical evidences rather than scientific evidences. The study aimed to investigate the cytotoxic activity of hantap leaves extracts against breast cancer cells line. The effect of this extract on the HER2 expression and the apoptosis was also evaluated. The hantap (S. oblongata Mast) leaves extracts were prepared by consecutive maceration method using n-hexane, methanol and water, respectively. The cytotoxic activity against MCF7/HER2 breast cancer cells line was evaluated using the MTT assay with doxorubicin as a positive control. The HER2 mRNA expression was examined using RT-PCR and the apoptosis after 24 h incubation was examined using a fluorescence microscope after AO-PI (acridine orange-propidium iodide) staining. Among three extracts tested, the methanolic extract exhibited the most cytotoxic against MCF7/HER2 cells with an IC50 of 91.25 μg/mL. Therefore, the methanolic extract was subjected to further study. The methanolic extract at concentration of 1/2IC50; 1IC50 and 2IC50 μM induced 6.8; 26.3 and 25.3% apoptosis of the MFC7/HER2 cell lines, respectively. The methanolic extract at concentration of 1/2IC50; 1IC50 and 2IC50 μM inhibited HER2 mRNA expression to be 0.6; 0.25 and 0.33 compared to control cells. In conclusion, the methanolic extract of hantap leaves (S. oblongata Mast) has cytotoxic activity against MCF7/HER2 breast cancer cell lines by induce cells apoptosis and inhibit HER2 mRNA expression. Further study, will be conducted to isolate active constituents as anticancer.
Cytotoxicity of hantap (Sterculia oblongata Mast) leaves extracts against breast cancer cell line (T47D): effect on apoptosis and caspase-3 mRNA expression Adika Suwarman; Indwiani Astuti; Woro Rukmi Pratiwi; Sitti Ayu Suhartina Yahya
Indonesian Journal of Pharmacology and Therapy Vol 5 No 2 (2024)
Publisher : Faculty of Medicine, Public Health, and Nursing Universitas Gadjah Mada and Indonesian Pharmacologist Association or Ikatan Farmakologi Indonesia (IKAFARI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijpther.10147

Abstract

Hantap (Sterculia oblongata Mast) leaves has been traditionally used in Palu, Central Sulawesi to treat breast cancer. However, its scientific evidence is limited. This study aimed to investigate the cytotoxicity of hantap leaf extracts against T47D breast cancer cells. The apoptotic activity of the extracts and its effect on caspase expression were also evaluated. The extracts were prepared by multilevel maceration using n-hexane, methanol, and water. Cytotoxic activity was evaluated by MTT assay. The apoptotic activity was observed by using a fluorescence microscope after acridine orange-propidium iodide (AO/PI) staining, whereas the caspase-3 mRNA expression was examined by using RT-PCR. Among the 3 tested extracts, the methanol extract exhibited the highest cytotoxicity with an IC50 value of 85 μg/mL. The methanol extract at concentrations of 42.5 μg/mL (½IC50), 85 μg/mL (IC50), and 170 μg/mL (2IC50) induced 127.25, 85.50, 479.5% of cell apoptosis, respectively. Furthermore, the methanol extract at concentrations of ½IC50, IC50, and 2IC50 increased 1.04, 1.43 and 1.69 time higher of caspase-3 mRNA expression. In conclusion, the methanolic extract of hantap leaf exhibits cytotoxicity against T47D breast cancer cells, by inducing apoptosis and increasing caspase-3 mRNA expression.
Co-Authors Adika Suwarman Indwiani Astuti Mustofa Mustofa Woro Rukmi Pratiwi