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2017 ; 108
(4
): 570-573
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Molecular-targeting therapies against quantitative abnormalities in gene
expression with malignant tumors
#MMPMID28178388
Sakai T
; Sowa Y
Cancer Sci
2017[Apr]; 108
(4
): 570-573
PMID28178388
show ga
Genetic mutations in exons of oncogenes and tumor-suppressor genes causing
qualitative abnormalities result in activation of the oncogenes and inactivation
of the tumor-suppressor genes, thereby causing cancer. In contrast, we have
previously demonstrated that decreases in the RB promoter activity by genetic or
epigenetic abnormalities can also cause carcinogenesis. In addition, activation
and inactivation of a variety of oncogenes and tumor-suppressor genes finally
cause quantitative abnormalities in gene expression. Interestingly, we discovered
effective molecular-targeting agents, such as a novel MEK inhibitor, trametinib,
by screening for agents upregulating the expression of cyclin-dependent kinase
inhibitors. In the present review, we focused on the quantitative abnormalities
in gene expression with carcinogenesis, and discuss the importance of normalizing
the quantitative abnormalities in gene expression with several
molecular-targeting agents.