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Carvacrol Promotes Cell Cycle Arrest and Apoptosis through PI3K/AKT Signaling Pathway in MCF-7 Breast Cancer Cells

Chinese Journal of Integrative Medicine 2021年第9期27卷 680-687页

作者： Ashok Mari Gopikrishnan Mani sirpu natesh nagabhishek Gopaiakrishnan Balaraman Nirmala Subramanian Fathima Bushra Mirza Jagan Sundaram Devaki Thiruvengadam Department of Biochemistry University of MadrasGuindy CampusChennai(600025)India Cancer Biology Lab Department of Nanoscience and NanotechnologySathyabama Institute of Science and TechnologyChennai(600119)India VRR Institute of Biomedical Science KattupakkamChennai(600056)India

Objective:To examine the role of carvacrol in modulating PI3 K/AKT signaling involved in human breast cancer pathogenesis using in vitro experimental model MCF-7 ***:MTT and lactate dehydrogenase assays were performed with cells treated with different doses of carvacrol(0–250μmol/L)at different time points(24 and 48 h).The nuclear morphology was assessed in MCF-7 cells with propidium iodide(PI)and acridine orange/ethidium bromide(AO/EB)staining and analyzed by fluorescence *** like cell cycle arrest and apoptosis were observed by flow cytometric analysis and expressions of p-Rb,cyclin D1,cyclin-dependent kinase 4(CDK4),CDK6,Bax,Bcl-2,PI3 K/p-AKT were analyzed by ***:Carvacrol significantly reduced cell viability with the half maximal inhibitory concentration value of 200μmol/L at 24 and 48 h(P<0.05).importantly,there was a significant increase in the accumulation of the G0/G1 phase upon treatment with carvacrol in MCF-7 cells(P<0.05 or P<0.01).A remarkable decrease in protein expressions of p-Rb,cyclin D1,CDK4 and CDK6 denoted cell cycle arrest(P<0.05 or P<0.01).In addition,carvacrol treatment significantly inhibited PI3 K/p-AKT protein expressions leading to induction of apoptosis mediated by decreased Bcl2 and increased Bax protein ***,Annexin V/PI staining by FACS analysis,dual staining by AO/EB and PI staining studies suggested induction of apoptosis by carvacrol through PI3 K/Akt signaling pathway in MCF-7 ***:Carvacrol significantly inhibited the breast cancer MCF-7 cell proliferation and induced apoptosis via suppressing PI3/AKT signaling pathway.

关键词： carvacrol breast cancer proliferation apoptosis PI3K/AKT signaling pathway

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Anticancer activity of crude acetone and water extracts of Tulbaghia violacea on human oral cancer cells

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Asian Pacific Journal of Tropical Biomedicine 2018年第9期8卷 456-462页

作者： Samkeliso Takaidza Arumugam Madan Kumar Cornelius Cano Ssemakalu Nagabishek sirpu natesh Gayathri Karanam Michael Pillay Department of Biotechnology Vaal University of Technology Cancer Biology Lab Molecular and Nanomedicine Research Unit Sathyabama Institute of Science and Technology

Objective: To evaluate the anticancer activity of crude acetone and water leaf extracts of Tulbaghia violacea on a human oral cancer cell line(KB).Methods: The antioxidant activity of the leaf extracts was evaluated by using the DPPH assay while the anti-proliferative activity was assessed by using the MTT *** morphological characteristics of apoptotic cells were examined by using the dual acridine orange/ethidium bromide *** cytometry was used to evaluate the induction of multi-caspase activity and changes in the cell ***: The acetone and water extracts exhibited antioxidant activity in a concentration dependent *** extracts inhibited the growth of the KB cell line with IC_(50) values of 0.2 mg/mL and 1 mg/mL, respectively for acetone and *** changes such as cell shrinkage, rounding and formation of membrane blebs were observed in the treated *** acridine orange/ethidium bromide staining, the number of apoptotic cells increased as the concentration of the extracts *** activation of multi-caspase activity in KB cells treated with Tulbaghia violacea extracts was concentration dependent, leading to cell death by apoptosis and cell cycle arrest at the G_2/M ***: The acetone and water extracts of Tulbaghia violacea appear to have anti-cancer activity against human oral cancer cells and need to be investigated further.

关键词： Anticancer activity Antioxidant Apoptosis Caspase Cell cycle Tulbaghia

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