The differentiation of human leukemia K562 cells can be induced by matrine. To investigate the mechanism of the induced cell differentiation, an improved DDRT PCR technique was applied to screen the differentially exp...The differentiation of human leukemia K562 cells can be induced by matrine. To investigate the mechanism of the induced cell differentiation, an improved DDRT PCR technique was applied to screen the differentially expressed genes between K562 cells and the matrine treated cells. The sequences of the fragments of the differentially expressed genes were obtained by sequencing following the T A cloned fragments identified by restriction endonuclease, and analyzed with bioinformatics. The results indicated that the multiple gene expression known already changed in the process of induced cell differentiation and an unknown gene fragment was cloned. It suggested that the differentially expressed genes acted as cell differentiation related genes involved in the early phase of the induced cell differentiation.展开更多
[Objective] The aim was to explore the reasons of false positives in Different Display Reverse Transcription（DDRT）analysis.[Method] Soybean varieties ＂Jilin 30＂ and ＂Tongnong 13＂ were used as materials to carry ...[Objective] The aim was to explore the reasons of false positives in Different Display Reverse Transcription（DDRT）analysis.[Method] Soybean varieties ＂Jilin 30＂ and ＂Tongnong 13＂ were used as materials to carry out analysis on false positives in DDRT analysis.[Result] An important origin of false positives appeared in DDRT analysis was the non-specific amplification caused by the combination of single primer and cDNA.The parallel PCR test of single primer should be set so as to verify whether the obtained fragments were the false positives or the PCR productions combined with single primer.[Conclusion] This study had provided basis for improving the success rate of DDRT experiment.展开更多
文摘The differentiation of human leukemia K562 cells can be induced by matrine. To investigate the mechanism of the induced cell differentiation, an improved DDRT PCR technique was applied to screen the differentially expressed genes between K562 cells and the matrine treated cells. The sequences of the fragments of the differentially expressed genes were obtained by sequencing following the T A cloned fragments identified by restriction endonuclease, and analyzed with bioinformatics. The results indicated that the multiple gene expression known already changed in the process of induced cell differentiation and an unknown gene fragment was cloned. It suggested that the differentially expressed genes acted as cell differentiation related genes involved in the early phase of the induced cell differentiation.
文摘[Objective] The aim was to explore the reasons of false positives in Different Display Reverse Transcription（DDRT）analysis.[Method] Soybean varieties ＂Jilin 30＂ and ＂Tongnong 13＂ were used as materials to carry out analysis on false positives in DDRT analysis.[Result] An important origin of false positives appeared in DDRT analysis was the non-specific amplification caused by the combination of single primer and cDNA.The parallel PCR test of single primer should be set so as to verify whether the obtained fragments were the false positives or the PCR productions combined with single primer.[Conclusion] This study had provided basis for improving the success rate of DDRT experiment.
