Abstract
to study the role of structural maintenance of chromosome (SMC)1, SMC3, Separase and Securin in tumorgenesis that contact with coal tar pitch. the BEAS-2B cells was induced by coal tar pitch smoke extracts to form malignant transformation cell model in vitro. The gene expression levels of mRNA were assessed by real-time quantitative RT-PCR, and the protein expression variation were determined by cell culture overslip of immunohistochemical methods. in malignant transformation cells, the mRNA and the protein expression level of SMC1 gene was not statistically significantly different compared with the BEAS-2B group and DMSO group (P > 0.05); SMC3 and Separase was increased and Securin was decreased (P < 0.05), while the difference between other two control groups was not significant (P > 0.05). the up expression level of SMC3 and Separase and the down expression level of Securin are involved in the process that evolves into malignant transformation in bronchial epithelial cells BEAS-2B induced by coal tar pitch smoke extracts.
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