Abstract:
:Signal transduction pathways, which regulate cell growth and survival, are up-regulated in many cancers and there is considerable interest in their pharmaceutical modulation for cancer treatment. However inhibitors of single pathway components induce feedback mechanisms that overcome the growth moderating effect of the inhibitor. Combination treatments have been proposed to provide a more complete pathway inhibition. Here the effect of dual treatment of cancer cells with a pan-Akt and a pan-mTOR inhibitor was explored. Breast (SKBr3 and MDA-MB-468) and colorectal (HCT8) cancer cells were treated with the pan-Akt inhibitor MK2206 and pan-mTOR inhibitor AZD8055. Cytotoxic effect of the two drugs were determined using the MTT assay and the Combination Index and isobolomic analysis used to determine the nature of the interaction of the two drugs. Flow cytometry and western blot were employed to demonstrate drug effects on cell cycle distribution and phosph-Aktser473 expression. Radiolabelled ([methyl-3H]) Choline uptake was measured in control and drug-treated cells to determine the modulatory effects of the drugs on choline incorporation. The two drugs acted synergistically to inhibit the growth rate of each cancer cell line. Flow cytometry demonstrated G0/G1 blockade with MK2206 and AZD8055 which was greater when cells were treated with both drugs. The incorporation of [methyl-3H] choline was found be decreased to a greater extent in cells treated with both drugs compared with cells treated with either drug alone. Conclusions Pan-mTOR and pan-Akt inhibition may be highly effective in cancer treatment and measuring changes in choline uptake could be useful in detecting efficacious drug combinations.
journal_name
Invest New Drugsjournal_title
Investigational new drugsauthors
Phyu SM,Smith TADdoi
10.1007/s10637-018-0642-5subject
Has Abstractpub_date
2019-06-01 00:00:00pages
424-430issue
3eissn
0167-6997issn
1573-0646pii
10.1007/s10637-018-0642-5journal_volume
37pub_type
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journal_title:Investigational new drugs
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pub_type: 杂志文章,多中心研究
doi:10.1007/s10637-010-9532-1
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journal_title:Investigational new drugs
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journal_title:Investigational new drugs
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journal_title:Investigational new drugs
pub_type: 杂志文章
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journal_title:Investigational new drugs
pub_type: 杂志文章
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journal_title:Investigational new drugs
pub_type: 杂志文章
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journal_title:Investigational new drugs
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journal_title:Investigational new drugs
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journal_title:Investigational new drugs
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journal_title:Investigational new drugs
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journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-013-0041-x
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journal_title:Investigational new drugs
pub_type: 临床试验,杂志文章,多中心研究
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journal_title:Investigational new drugs
pub_type: 杂志文章,多中心研究,随机对照试验
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journal_title:Investigational new drugs
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journal_title:Investigational new drugs
pub_type: 临床试验,杂志文章
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journal_title:Investigational new drugs
pub_type: 杂志文章,多中心研究,随机对照试验
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journal_title:Investigational new drugs
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journal_title:Investigational new drugs
pub_type: 杂志文章
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journal_title:Investigational new drugs
pub_type: 杂志文章,多中心研究,随机对照试验
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更新日期:2013-08-01 00:00:00