遗传性乳光牙本质又名牙本质发育不全II型(dentinogenesis imperfecta type II, DGI-II或DGII)（MIM 125490）是一种常染色体显性遗传病，表现为牙齿结构异常。我们拟就新发现的一个DGI-II家系进行牙本质涎磷蛋白(dentin sialophosphopr...
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遗传性乳光牙本质又名牙本质发育不全II型(dentinogenesis imperfecta type II, DGI-II或DGII)（MIM 125490）是一种常染色体显性遗传病，表现为牙齿结构异常。我们拟就新发现的一个DGI-II家系进行牙本质涎磷蛋白(dentin sialophosphoprotein, DSPP)致病基因的突变检测，以证实是否有新的突变位点，从而进一步阐明该病基因型和表型间的相互关系。
Objective To investigate the effect of trans-acting factor(s) on rat glutathione S-transferase P1 gene (rGSTP1) transcription regulation in tumor *** The binding of trans-acting factor(s) to two enhancers of the rG...
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Objective To investigate the effect of trans-acting factor(s) on rat glutathione S-transferase P1 gene (rGSTP1) transcription regulation in tumor *** The binding of trans-acting factor(s) to two enhancers of the rGSTP1 gene, glutathione S-transferase P enhancer Ⅰ (GPEI) and glutathione S-transferase P enhancer Ⅱ-1 (GPEⅡ-1), was identified by an electrophoretic mobility shift assay (EMSA). The molecular weight of trans-acting factor was measured in a UV cross-linking experiment. Results Trans-acting factor interacting with the core sequence of GPEI (cGPEI) were found in human cervical adenocarcinoma cell line (HeLa) and rat hepatoma cell line (CBRH7919). These proteins were not expressed in normal rat liver. Although specific binding proteins that bound to GPEⅡ-1 were detected in all three cell types, a 64 kDa binding protein that exists in HeLa and CBRH7919 cells was absent in normal rat liver. Conclusion cGPEI, GPEII specific binding proteins expressed in HeLa and CBRH7919 cells may play an important role in the high transcriptional level of the rGSTP1 gene in tumor cells.
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