[Detection of bcr-abl fusion gene mRNA level in K562/A02 cell line by real-time quantitative RT-PCR].

This study was aimed to quantitatively analyze the mRNA level of bcr-abl fusion gene in K562/A02 cell line by real-time quantitative reverse transcriptase polymerase chain reaction (RQ-RT-PCR) technique. After being cultured for a period of time, the K562/A02 cell line was collected and RNA was extracted using TRIzoL kit. The real-time quantitative reverse transcriptase polymerase chain reaction technology was used to detect the level of bcr-abl fusion gene and internal reference abl gene. The results showed that a fine reproducibility was obtained between 10(7) and 10(3) copies/ml, reproducible sensitivity of RQ-RT-PCR was 10(-5). The expression of bcr-abl fusion gene in K562/A02 cells was higher and the level of bcr-abl mRNA was more than 100% in K562/A02 cells. It is concluded that RQ-RT-PCR is a reliable, sensitive and reproducible method for detecting mRNA level of bcr-abl fusion gene, which may be useful in monitoring the chronic myeloid leukemia.