Purpose: To analyze the genetic changes of CDK4gene and expression of CDK4 mRNA in the breastcancer.Materials and methods: We obtained a fragment ofCDK4 gene, from many kinds of human cancer ornormal tissues by PCR .T...Purpose: To analyze the genetic changes of CDK4gene and expression of CDK4 mRNA in the breastcancer.Materials and methods: We obtained a fragment ofCDK4 gene, from many kinds of human cancer ornormal tissues by PCR .Taking it as a probe, using themethods of Southern and Dot blotting, We analyzed therole of CDK4 gene in the occurrence and developmentof human breast cancer.Results: CDK4 gene appeared amplification and itsmRNA overexpressed clearly in the breast cellline(MDA231). In human breast cancer tissues, CDK4mRNA expressed much more than normal breasttissues(p<0.05).Conclusion: in the tumorigenesis process, theregulative role of CDK4 is important. its abnormalamplification or expression will cause cell division cycleinto a disorder one, then the cell may enter an unlimitedproliferation cycle.展开更多
Objective: TO study the mechanism of cancer, theDNA for BAC was cloned from an ascites hepatoma cellline Hca-F25lCL-16A3 using PCR. Methods: The nucleotide sequences were determined using ABI PRISMTM377 DNA sequencer....Objective: TO study the mechanism of cancer, theDNA for BAC was cloned from an ascites hepatoma cellline Hca-F25lCL-16A3 using PCR. Methods: The nucleotide sequences were determined using ABI PRISMTM377 DNA sequencer. The expression of hcf-2 and CDK4gene were determined using im munohis tochemis try.Results: The sequences of BAC segment on Hca-F25lCL-16A3 have nearly identical sequences withhuman BAC. The hcl-2 and CDK4 are highly expressionon this cell line. Conclusion: The highly expression ofhcf-2 and CDK4 may the one of mechanisms for tumorgrowth.展开更多
文摘Purpose: To analyze the genetic changes of CDK4gene and expression of CDK4 mRNA in the breastcancer.Materials and methods: We obtained a fragment ofCDK4 gene, from many kinds of human cancer ornormal tissues by PCR .Taking it as a probe, using themethods of Southern and Dot blotting, We analyzed therole of CDK4 gene in the occurrence and developmentof human breast cancer.Results: CDK4 gene appeared amplification and itsmRNA overexpressed clearly in the breast cellline(MDA231). In human breast cancer tissues, CDK4mRNA expressed much more than normal breasttissues(p<0.05).Conclusion: in the tumorigenesis process, theregulative role of CDK4 is important. its abnormalamplification or expression will cause cell division cycleinto a disorder one, then the cell may enter an unlimitedproliferation cycle.
文摘Objective: TO study the mechanism of cancer, theDNA for BAC was cloned from an ascites hepatoma cellline Hca-F25lCL-16A3 using PCR. Methods: The nucleotide sequences were determined using ABI PRISMTM377 DNA sequencer. The expression of hcf-2 and CDK4gene were determined using im munohis tochemis try.Results: The sequences of BAC segment on Hca-F25lCL-16A3 have nearly identical sequences withhuman BAC. The hcl-2 and CDK4 are highly expressionon this cell line. Conclusion: The highly expression ofhcf-2 and CDK4 may the one of mechanisms for tumorgrowth.