| Summary: | The major aim of this study is to study the BORIS and CTCF genes expression
in brain tumors by determines the relative quantification of expression by Real-Time
RT -PCR analyses. The result in this study is vital as one of other new approaches for
the diagnostic or prognostic brain tumour purposes. To investigate the expression of
these genes' m.RNA, the samples of total RNA was prepared for each tumour sample.
Intact total RNA with purity between 1.8 - 2.0 was used for synthesis of eDNA. In
order to confirm the expression level of BORIS and CTCF gene, gene-specific primer
were designed using sequence obtained from GenBank (Primer Express Software
version 2.0 Apllied Biosystem). Real-Time RT-PCR analysis was conducted by
measuring the given level of fluorescence as the number of cycle threshold (Cr ). These
Cr values serve as indirect indicators of gene expression so that samples with high
expression of a given gene will exhibit lower Cr value than samples showing low level
of gene expression. A gene is considered differentially expressed if its relative
expression is two-fold or greater. In this study, the results of Real-Time RT-PCR
demonstrated that the expression level of the CTCF was significantly higher in tumor
than in normal in 2.8 fold. However, there was no BORIS expression was detected
either in tumor or normal sample. Even though this is only preliminary study due to
restricted number of samples and also limited time given, however, we believe that by
further this study will guide us to appreciate better the role of BORIS and CTCF genes
in formation of brain tumor.
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