Chimeric caspase molecules with potent cell killing activity in apoptosis-resistant cells |
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Authors: | Shearwin-Whyatt L Baliga B Doumanis J Kumar S |
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Institution: | Hanson Centre for Cancer Research, Institute of Medical and Veterinary Science, Adelaide, South Australia, 5000, Australia. |
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Abstract: | Cellular defects which prevent apoptotic cell death can result in the generation of hyperproliferative disorders and can prevent the effective treatment of such diseases. The majority of cellular defects which result in apoptosis resistance lie upstream of caspase activation. We have described chimeric caspase molecules consisting of the prodomain of caspase-2 fused to the amino terminus of caspase-3, and which are tagged at the carboxyl terminus with green fluorescent protein (GFP) to allow direct visualisation of transfected cells. Here we show that these chimeric caspase molecules possess potent, rapid cell-killing activity in cell lines which display a range of defects resulting in apoptosis resistance. |
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