Abstract:
BACKGROUND:Enzastaurin, an oral serine-threonine kinase inhibitor, was initially developed as an ATP-competitive selective inhibitor against protein kinase Cβ. However, the mechanism by which enzastaurin contributes to tumourigenesis remains unclear. METHODS:We analysed the anti-tumour effects of enzastaurin in 22 lung cancer cell lines to ascertain the potential for enzastaurin-based treatment of lung cancer. To identify molecules or signalling pathways associated with this sensitivity, we conducted a gene, receptor tyrosine kinases phosphorylation and microRNA expression profiling study on the same set of cell lines. RESULTS:We identified eight genes by pathway analysis of molecules having gene-drug sensitivity correlation, and used them to build a support vector machine algorithm model by which sensitive cell lines were distinguished from resistant cell lines. Pathway analysis revealed that the JAK/STAT signalling pathway was one of the main ones involved in sensitivity to enzastaurin. Overexpression of JAK1 was observed in the sensitive cells by western blotting. Simultaneous administration of enzastaurin and JAK inhibitor inhibited enzastaurin-induced cell growth-inhibitory effect. Furthermore, lentiviral-mediated JAK1-overexpressing cells were more sensitive to enzastaurin than control cells. CONCLUSION:Our results suggested that the JAK1 pathway may be used as a single predictive biomarker for enzastaurin treatment. The anti-tumour effect of enzastaurin should be evaluated in lung cancer with overexpressed JAK pathway molecules.
journal_name
Br J Cancerjournal_title
British journal of cancerauthors
Shimokawa T,Seike M,Soeno C,Uesaka H,Miyanaga A,Mizutani H,Kitamura K,Minegishi Y,Noro R,Okano T,Yoshimura A,Gemma Adoi
10.1038/bjc.2012.7subject
Has Abstractpub_date
2012-02-28 00:00:00pages
867-75issue
5eissn
0007-0920issn
1532-1827pii
bjc20127journal_volume
106pub_type
杂志文章abstract::Findings in humans and animal models suggest that in utero hormonal and dietary exposures increase later breast cancer risk. Since alcohol intake by adult women consistently increases their breast cancer risk, we wondered whether maternal alcohol consumption during pregnancy increases female offspring's mammary tumori...
journal_title:British journal of cancer
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journal_title:British journal of cancer
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pub_type: 杂志文章
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更新日期:2003-10-06 00:00:00
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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:2006-09-04 00:00:00
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