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2015 ; 5
(ä): 14118
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In vitro discovery of promising anti-cancer drug combinations using iterative
maximisation of a therapeutic index
#MMPMID26392291
Kashif M
; Andersson C
; Hassan S
; Karlsson H
; Senkowski W
; Fryknäs M
; Nygren P
; Larsson R
; Gustafsson MG
Sci Rep
2015[Sep]; 5
(ä): 14118
PMID26392291
show ga
In vitro-based search for promising anti-cancer drug combinations may provide
important leads to improved cancer therapies. Currently there are no integrated
computational-experimental methods specifically designed to search for
combinations, maximizing a predefined therapeutic index (TI) defined in terms of
appropriate model systems. Here, such a pipeline is presented allowing the search
for optimal combinations among an arbitrary number of drugs while also taking
experimental variability into account. The TI optimized is the cytotoxicity
difference (in vitro) between a target model and an adverse side effect model.
Focusing on colorectal carcinoma (CRC), the pipeline provided several
combinations that are effective in six different CRC models with limited
cytotoxicity in normal cell models. Herein we describe the identification of the
combination (Trichostatin A, Afungin, 17-AAG) and present results from subsequent
characterisations, including efficacy in primary cultures of tumour cells from
CRC patients. We hypothesize that its effect derives from potentiation of the
proteotoxic action of 17-AAG by Trichostatin A and Afungin. The discovered drug
combinations against CRC are significant findings themselves and also indicate
that the proposed strategy has great potential for suggesting drug combination
treatments suitable for other cancer types as well as for other complex diseases.