In order to establish K562 line with stable expressions of hermap and hermap-siRNA, amplified hermap and hermap-siRNA were cloned into pEGFP-c1 and pRNAT to acquire hermap-pEGFP-c1 and hermap-siRNA-pRNAT, respectively. These two plasmids were electrotransferred into K562 cells, then were followed by culturing with G418. The result showed that the transfer rate of hermap-pEGFP-c1-K562 and hermap-siRNA-pRNAT-K562 plasmids were 10.0% and 9.3%, respectively. After selective culture by G418, these two cell lines were still able to express GFP. It is concluded that the eukaryotic expression plasmids containing hermap and hermap-siRNA have been successfully constructed, and the cell lines of hermap-K562 and hermap-siRNA-K562 are established, definitely contributing to further functional investigation on HERMAP and its interaction with other proteins.
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[Effects of hermap gene on p-STAT5 kinases in signal transduction pathway during erythroid differentiation].
Zhonghua Xue Ye Xue Za Zhi
June 2011
Department of Hematology-Oncology, Guangzhou Women and Children's Medical Center, Guangzhou 510623, China.
Objective: To study the effects of hermap gene on kinases in erythroid signal transduction pathway and investigate the mechanism of hermap on erythroid differentiation.
Methods: The K562 cells expressing hermap and hermap-siRNA respectively were established for up- and down-regulating the expression of hermap gene. These K562 cells were then induced by Ara-C to erythroid differentiation and analyzed at 0, 24, 48, 72 and 96 h, respectively, for cell morphology and biphenylamine staining positive cells, determination of CD235a, CD36, kinases p-STAT5, p-Akt, p-MAPK and p-c-JUN by FCM; and quantification of hermap gene and γ (Aγ,Gγ) globin gene by FQ-PCR.
[Establishment of the cell line K562 with stable expression of hermap and hermap-siRNA].
Zhongguo Shi Yan Xue Ye Xue Za Zhi
October 2010
Department of Hematology and Oncology, Guangzhou Women and Children Medical Center, Guangzhou 510623, Guangdong Prvoince, China.
In order to establish K562 line with stable expressions of hermap and hermap-siRNA, amplified hermap and hermap-siRNA were cloned into pEGFP-c1 and pRNAT to acquire hermap-pEGFP-c1 and hermap-siRNA-pRNAT, respectively. These two plasmids were electrotransferred into K562 cells, then were followed by culturing with G418. The result showed that the transfer rate of hermap-pEGFP-c1-K562 and hermap-siRNA-pRNAT-K562 plasmids were 10.
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