Objective: This study intends to explore the potential of galangal extract as a co-chemotherapeutic agent through the analysis of its cytotoxic and migratory effects on metastatic breast cancer cells and as an anti-ageing agent through its senescence inhibitory effect on normal fibroblast cells. Methods: Galangal ethanolic extract (GE) was subjected to a cytotoxicity test with the 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay alone or in combination with doxorubicin (Dox) against 4T1 cells but not in NIH-3T3 cells. Evidence of senescent cells was detected using a SA-β galactosidase based assay. In addition, the level of reactive oxygen species (ROS), apoptosis, and cell cycle were measured with a flow cytometry-based assay. Meanwhile, cell migration and matrix metalloproteinase (MMP)-9 expression after GE treatment on 4T1 cells were measured using the scratch wound healing assay and gelatin zymography assay, respectively. The metabolomic profiles of GE were traced using gas chromatography-mass spectrometry (GC-MS) analysis. Results: GE effectively inhibited the growth of 4T1 cells with an IC 50 value of 135 µg/mL and increased the cytotoxic effect of Dox at concentrations of 50 and 100 µg/mL. GE increased the number of senescent cells arrested in the G2/M phase but did not cause apoptosis. This effect is compounded by increasing intracellular levels of ROS. However, GE reduced senescence to normal in fibroblast cells (NIH 3T3 cells) under oxidative stress by Dox without any changes in the ROS level. Moreover, GE also inhibited the migration of 4T1 cells and suppressed the expression of MMP-9 induced by Dox. Conclusion: Galangal has the potential for use as a co-chemotherapeutic agent by inducing senescence in correlation with increasing intracellular ROS toward metastatic breast cancer. However, the effect of GE in decreasing the senescence phenomena toward normal fibroblast cells illustrates its potential as a promising anti-ageing agent.
Abstract. Rahmawati N, Mustofa FI, Haryanti S. 2020. Diversity of medicinal plants utilized by To Manui ethnic of Central Sulawesi, Indonesia. Biodiversitas 21: 375-392. The present study reports the utilization of medicinal plants as medicines for the treatment of various diseases among the people of To Manui tribe in Central Sulawesi Province of Indonesia. Data collecting was conducted based on purposive random sampling to five selected traditional healers who fulfilled some inclusion criteria. The results showed as of 89 species of medicinal plants distributed in 50 families and 80 genera have been documented to have any pharmacological effects against 37 diseases and illnesses. Curcuma longa L. was determined as the most frequent medicinal plant used by traditional healers in To Manui for treating diabetes mellitus as well as after-birth treatment. However, conservation of some medicinal plants needs to be initiated in the study area especially Alstonia scholaris (L.) R. Br. as it is recognized in International Union for Conservation of Nature (IUCN) Red List as Least Concern (LC) of conservation status.
Secang (C. sappan L.) and awar (F. septica Burm.f) are known of Indonesian traditional medicine that highly consumed throughout centuries in order to cure various diseases. Recently, researchers also concern about its effects as anti-cancer on various cell types. This study was conducted to understand the ethanolic extract of C. sappan L. (ECS) and F. septica Burm.f (EFS) effects on 4T1 cells migration at various concentrations. Firstly, we examine cell proliferation profile with MTT assay under treatment with the extracts and obtained the IC50 value of ECS (20 μg/mL) and EFS (15 μg/mL). Subsequent assay conducted was to examine the cells migration under low concentration resulting in the migration inhibitory effect of both EFS and ECS with different intensity. EFS performed better migration inhibitory effect than ECS. Finally, we conducted gelatin zymography and western blot and revealed that the migration inhibitory effect of EFS may correlate to the lowering of protein expression of MMP9 and Rac-1 after 24 hours of treatment. We conclude that both extracts are potential to be developed as anticancer agent and EFS is more potent for anti-metastasis.
Previous research stated that galangal (Alpinia galanga) extract has a potential as cytotoxic agent with active compound of 1’-Acetoxychavicol Acetate (ACA). The objective of this study was to determine the selectivity of ethanol extract, ethyl acetate fraction, and methanol fraction of of galangal, and ACA on cancer cell lines. Cytotoxic activity was carried out using the MTT method on T47D breast cancer, WiDr colon cancer, HeLa cervical cancer, and Vero normal cell lines. The results showed that galangal ethanol extract and its fractions had selectivity index equal to or less than 2 on cancer cells. Meanwhile, ACA had selectivity index more than 3 on T47D cell and HeLa cell. ACA showed a strong cytotoxic activity against cancer cells T47D, HeLa, and WiDr with IC50 values of 3.14, 7.26, and 12.49 μg/ml, respectively. Based on data, it could be concluded that ACA was the most selective to inhibit T47D cell with a selectivity index of 6.6.Keywords: 1’-Acetoxychavicol acetate, galangal (Alpinia galanga), selective index, cytotoxic
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