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The role of Mcl-1 in the response of human colorectal cancer cells to treatment with dichloroacetate

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dc.contributor.advisor Coomber, Brenda
dc.contributor.author Delaney, Leanne
dc.date.accessioned 2013-08-26T19:21:33Z
dc.date.available 2013-08-26T19:21:33Z
dc.date.copyright 2013-08
dc.date.created 2013-08-22
dc.date.issued 2013-08-26
dc.identifier.uri http://hdl.handle.net/10214/7418
dc.description Final thesis for Leanne Delaney in partial fulfillment of requirements for the degree of Master of Science in Biomedical Sciences en_US
dc.description.abstract Dichloroacetate (DCA) it a metabolic reprogramming agent that is used to target the unique metabolism of cancer cells, but is not always effective in colorectal cancer cells. In HCT116 cells, DCA was unable to induce apoptosis, but did decrease proliferation when compared to untreated cells. A decrease in full length Mcl-1 protein expression 7 hours following DCA treatment did not correspond with changes in mRNA production or changes in expression of inhibitory binding partners, but may be due to altered proteasomal degradation. Similar reduction in levels of a lower molecular weight Mcl-1 band occurred, which did not result from alternative splicing or from caspase-mediated cleavage. Mcl-1 showed primarily nuclear localization within the cell, and expression changes in full-length Mcl-1 were seen in nuclear lysate but not cytoplasmic lysate after 7 hours of DCA treatment. Changes in nuclear Mcl-1 expression did not correspond with cell cycle arrest or progression. These results suggest that proteasomal degradation of Mcl-1 may be altered following treatment with DCA, and this change may be associated with decreased proliferation, independent of cell cycle arrest. This may indicate a novel role of nuclear Mcl-1 in response of colorectal cancer to DCA exposure. en_US
dc.description.sponsorship NSERC en_US
dc.language.iso en en_US
dc.rights Attribution-NonCommercial-NoDerivs 2.5 Canada *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/2.5/ca/ *
dc.subject Colorectal Cancer en_US
dc.subject Cancer Metabolism en_US
dc.subject Mcl-1 en_US
dc.subject Bcl-2 Proteins en_US
dc.subject Apoptosis en_US
dc.subject Cell Cycle en_US
dc.subject Proliferation en_US
dc.subject Dichloroacetate en_US
dc.title The role of Mcl-1 in the response of human colorectal cancer cells to treatment with dichloroacetate en_US
dc.type Thesis en_US
dc.degree.programme Biomedical Sciences en_US
dc.degree.name Master of Science en_US
dc.degree.department Department of Biomedical Sciences en_US
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Attribution-NonCommercial-NoDerivs 2.5 Canada Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 2.5 Canada