Gin Wah Hong1, Sok Lai Hong1, Guan Serm Lee1, Hashim Yaacob1, Sri Nurestri Abd Malek2. 1. Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia; Meritus University, 49, The Boulevard, Mid Valley City, Lingkaran Syed Putra, 59200 Kuala Lumpur, Malaysia. 2. Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia; Meritus University, 49, The Boulevard, Mid Valley City, Lingkaran Syed Putra, 59200 Kuala Lumpur, Malaysia. Electronic address: srimalek@um.edu.my.
Abstract
OBJECTIVE: To investigate the cytotoxic activity of the hexane and ethyl acetate extracts of Curcuma mangga rhizomes against human colorectal adenocarcinoma cell lines (HT29). METHODS: The cytotoxic activity of the hexane and ethyl acetate extracts of Curcuma mangga rhizomes against human colorectal adenocarcinoma cell lines (HT29) was determined by using the SRB assay. RESULTS: The ethyl acetate extract showed a higher cytotoxic effect compared to the hexane extract. Morphological changes of the HT29 cells such as cell shrinkage, membrane blebbling and formation of apoptotic bodies while changes in nuclear morphology like chromatin condensation and nuclear fragmentation were observed. Further evidence of apoptosis in HT29 cells was further supported by the externalization of phosphatidylserine which indicate early sign of apoptosis. CONCLUSIONS: The early sign of apoptosis is consistent with the cell cycle arrest at the G0/G1 checkpoint which suggests that the changes on the cell cycle lead to the induction of apoptosis in HT29.
OBJECTIVE: To investigate the cytotoxic activity of the hexane and ethyl acetate extracts of Curcuma mangga rhizomes against humancolorectal adenocarcinoma cell lines (HT29). METHODS: The cytotoxic activity of the hexane and ethyl acetate extracts of Curcuma mangga rhizomes against humancolorectal adenocarcinoma cell lines (HT29) was determined by using the SRB assay. RESULTS: The ethyl acetate extract showed a higher cytotoxic effect compared to the hexane extract. Morphological changes of the HT29 cells such as cell shrinkage, membrane blebbling and formation of apoptotic bodies while changes in nuclear morphology like chromatin condensation and nuclear fragmentation were observed. Further evidence of apoptosis in HT29 cells was further supported by the externalization of phosphatidylserine which indicate early sign of apoptosis. CONCLUSIONS: The early sign of apoptosis is consistent with the cell cycle arrest at the G0/G1 checkpoint which suggests that the changes on the cell cycle lead to the induction of apoptosis in HT29.
Authors: Sara Freitas; Rosário Martins; Margarida Costa; Pedro N Leão; Rui Vitorino; Vitor Vasconcelos; Ralph Urbatzka Journal: Mar Drugs Date: 2016-08-31 Impact factor: 5.118