Ratna Asmah Susidarti
1Department Of Pharmaceutical Chemistry, Faculty Of Pharmacy, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia. 2Cancer Chemoprevention Research Center, Faculty Of Pharmacy, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia.

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Journal : Indonesian Journal of Cancer Chemoprevention

Combination of Doxorubicin and Areca Ethanolic Extract Induces Apoptosis by Increasing Caspase-3 Level on Breast Cancer (T47D) Cells Fitria Rahmi; Edy Meiyanto; Ratna Asmah Susidarti
Indonesian Journal of Cancer Chemoprevention Vol 3, No 1 (2012)
Publisher : Indonesian Society for Cancer Chemoprevention

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14499/indonesianjcanchemoprev3iss1pp339-344

Abstract

Despite causing many side effects, doxorubicin (Dox) is still one of breast cancer drug of choice. Thus, combination of chemotherapy is developed in order to decrease doxorubicin regimen dose. The aim of this research is to examine the combination effect of doxorubicin (dox) and areca extract (AE) on T47D human breast cancer cells. The cytotoxic activity was determined using MTT assay. The combination index (CI) of the combination treatment was calculated to determine the effects (synergistic, additive or antagonistic). The combination application of dox (6-22nM) and AE (8-30µg/ml) on T47D cells showed synergistic (CI<0.9) or additive effect (CI=0.9-1.1). The effective combination of dox-AE was 6 nM - 8 µg/ml on CI<0.5. Apoptosis induction of AE solely and its combination with dox was then observed using double staining method. Moreover, expression of Bax and caspase-3 protein which mediated apoptosis, were observed using immunocytochemistry. Combination of AE and Dox increased expression of Caspase-3 but did not increase expression of Bax. This result showed AE increase the effectiveness of doxorubicin against T47D cells.Keywords: Breast cancer, doxorubicin, areca extract, T47D cells
Cytotoxic Activity of 1-(2,5-dihydroxyphenyl)-3-pyridine-2-yl-propenone on Colon Cancer Cell WiDr Nur Ismiyati; Yuli Puspito Rini; Andi Eko Wibowo; Ratna Asmah Susidarti
Indonesian Journal of Cancer Chemoprevention Vol 6, No 1 (2015)
Publisher : Indonesian Society for Cancer Chemoprevention

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14499/indonesianjcanchemoprev6iss1pp12-15

Abstract

Colon cancer is one of the most common death-caused cancer. The high mortality rate indicates that chemotherapy has not overcome cancer disease. Strategies and development of colon cancer treatment should be pursued. Compound 1-(2,5-dihydroxyphenyl)-3-pyridine-2-yl-propenone is the 2ʹ,5ʹ-dihydroxychalcone derivative, of which the B ring was substituted with 2-pyridine ring. Chalcone and its derivatives have been reported to have several biological activities, such as cytotoxic, anti-inflammatory, antiHIV, and as a tyrosine kinase inhibitor. The objectives of this research was to determine the cytotoxic activity on WiDr colon cancer cells of 1-(2,5-dihydroxyphenyl)-3-pyridine-2-yl-propenone. Cytotoxic activity was measured using MTT assay. Compound 1-(2,5-dihydroxyphenyl)-3-pyridine-2-yl-propenone inhibited WiDr cell growth with the IC50 of  16 µM. Morphology of WiDr cell showed that compound 1-(2,5-dihydroxyphenyl)-3-pyridine-2-yl-propenone inhibited cell growth in dose dependent.Keywords:  compound 1-(2,5-dihydroxyphenyl)-3-pyridine-2-yl-propenone, WiDr colon cancer cell line, cytotoxic activity
Ethyl Acetate Fraction of Caesalpinia sappan L. Enhances Cisplatin’s Cytotoxicity on HeLa Cells via G1 and S Arrest through p53 Expression Ulfatul Husnaa; Ni Putu Linda Laksmiani; Ratna Asmah Susidarti; Edy Meiyanto
Indonesian Journal of Cancer Chemoprevention Vol 8, No 2 (2017)
Publisher : Indonesian Society for Cancer Chemoprevention

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14499/indonesianjcanchemoprev8iss2pp51-60

Abstract

Cisplatin (cisp) is the first line chemotherapeutic agent for several cancer diseases which can cause significant side effects and cellular resistance. Combination-chemotherapy treatment (co-chemotherapy) was reported to be able to reduce cisp effects. Therefore, this study was carried out to investigate the cytotoxic activity of ethyl acetate fraction of C. sappan (EFC) in combination with cisp by observing apoptosis induction and cell cycle profile. Cytotoxic activity was evaluated by MTT assay. Cell cycle and apoptosis analysis were performed using flow cytometry and p53 expression was analyzed using immunocytochemistry. EFC performed cytotoxic effect on HeLa cells by showing morphological changes such as cell shrinkage, rounding and decreasing of cells viability in concentration dependent manner, giving IC50 value of 65 μg/mL. Combination of EFC and cisp in low concentration decreased cell viability into 36.86%. Further assay indicated that this combination caused redistribution of cell cycle arrest in G1 and S phases through p53 stabilization in nucleus. However, that mechanism was not followed by apoptosis. These results provide evidence to support EFC development as the enhancer of cisp effect, by improving its cytotoxicity on HeLa cells. EFC increases HeLa cells sensitivity to cisp through G1 and S cells’ arrest depending on p53 expression. Key words: co-chemotherapy, EFC, cervix cancer HeLa cells, p53, G1 and S arrest.         
Antiproliferative Effect and Apoptosis Induced in Human Cell Lines by Bruguiera gymnorhiza Barks Methanol Extract Warsinah Warsinah; Sismindari Sismindari; Ratna Asmah Susidarti
Indonesian Journal of Cancer Chemoprevention Vol 2, No 3 (2011)
Publisher : Indonesian Society for Cancer Chemoprevention

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14499/indonesianjcanchemoprev2iss3pp299-303

Abstract

The Antiproliferative effects of methanol extract from Bruguiera gymnorhiza (B. gymnorhiza) barks were tested in vitro against three human cell lines: Hela, Raji and Myeloma cells. The extract was found to have antiproliferative effects against Hela, Raji and Myeloma cells with an IC50 value of 133, 504 and 384 µg/mL, respectively. The antiproliferative test was then performed on Hela, Raji, and Myeloma cells. Cytotoxicity assay of the extract was then determined using MTT method. There were some indications of apoptosis, such DNA fragmentation, as assessed by acrydine orange- ethidium bromide staining. These results indicate that extract from B. gymnorhiza barks can induce apoptosis in human cell lines.Keywords: Antiproliferative, Apoptosis, B. gymnorhiza
Brazilein Increased Cytotoxic Activity of Doxorubicin on MCF-7/DOX Cells Ni Putu Linda Laksmiani; Ratna Asmah Susidarti; Edy Meiyanto
Indonesian Journal of Cancer Chemoprevention Vol 6, No 2 (2015)
Publisher : Indonesian Society for Cancer Chemoprevention

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14499/indonesianjcanchemoprev6iss2pp58-63

Abstract

Brazilein is a compound obtained in a large amount from the dried heartwood of Secang (Caesalpinia sappan L.). Brazilein has strong cytotoxic effect in several cancer cell lines. This research was designed to evaluate the cytotoxic effect of brazilein and its combination with a chemotherapy agent, doxorubicin on MCF-7/DOX breast cancer cells. In the cytotoxicity assay, MCF-7/DOX cells were cultured in the presence of brazilein solely and in combination with doxorubicin for 24 hours and cell viability was evaluated by using MTT assay. MTT assay showed a dose-dependent inhibition of cell proliferation with IC50 value of 37 µM. Brazilein increased doxorubicin’s cytotoxic activity on MCF-7/DOX cells. Both of single treatment with different concentration of brazilein 12.5 and 25 mM or doxorubicin 0.8 and 1 mM gave cell viability percentage above 80%, but combination of them led to decrease the cell viability percentage significantly. Based on this research, it can be concluded that brazilein is potential to be developed as a co-chemotherapy agent on breast cancer cell that have been resistant to doxorubicin. Futher study must be held to evaluate its molecular mechanism.Keywords : brazilein, doxorubicin, MCF-7/DOX, cytotoxic.