AIM: To investigate the expression of RhoC gene inhepatocellular carcinoma (HCC) and to evaluate therelationship between RhoC gene expression and invasionand metastasis of HCC.METHODS: mRNA expression level of RhoC ge...AIM: To investigate the expression of RhoC gene inhepatocellular carcinoma (HCC) and to evaluate therelationship between RhoC gene expression and invasionand metastasis of HCC.METHODS: mRNA expression level of RhoC gene wasexamined by reverse transcription-polymerase chain reaction(RT-PCR) in 25 cases of HCC and para-cancerous normalliver tissues. In addition, mutation of RhoC gene wasexamined by polymerase chain reaction-single strandconformational polymorphism (PCR-SSCP).RESULTS: The mRNA expression levels of RhoC in tumortissues were significantly higher than those in para-cancerousnormal liver tissues (1.8±1.1 vs 1.0±0.7, P<0.01). Themetastatic lesions outside of liver also showed significantlyhigher RhoC mRNA levels than corresponding tumor tissuesin liver (3.3±0.5 vs2.0±0.7, P<0.01). There were significantassociations between RhoC gene expression and certainclinical and pathological findings, including celldifferentiation, vein invasion, number of tumor nodes andmetastatic lesions. Mutation of RhoC gene was not foundby PCR-SSCP.CONCLUSION: The RhoC gene may be related to malignanttransformation and development of HCC and may play animportant role in the invasion and metastasis of HCC byoverexpression but not mutation.展开更多
基金the grant from National Key Technologies R and D Program,No.2001BA703B05 the grant from Hunan Province Developing Planning Committee,No.2001-907
文摘AIM: To investigate the expression of RhoC gene inhepatocellular carcinoma (HCC) and to evaluate therelationship between RhoC gene expression and invasionand metastasis of HCC.METHODS: mRNA expression level of RhoC gene wasexamined by reverse transcription-polymerase chain reaction(RT-PCR) in 25 cases of HCC and para-cancerous normalliver tissues. In addition, mutation of RhoC gene wasexamined by polymerase chain reaction-single strandconformational polymorphism (PCR-SSCP).RESULTS: The mRNA expression levels of RhoC in tumortissues were significantly higher than those in para-cancerousnormal liver tissues (1.8±1.1 vs 1.0±0.7, P<0.01). Themetastatic lesions outside of liver also showed significantlyhigher RhoC mRNA levels than corresponding tumor tissuesin liver (3.3±0.5 vs2.0±0.7, P<0.01). There were significantassociations between RhoC gene expression and certainclinical and pathological findings, including celldifferentiation, vein invasion, number of tumor nodes andmetastatic lesions. Mutation of RhoC gene was not foundby PCR-SSCP.CONCLUSION: The RhoC gene may be related to malignanttransformation and development of HCC and may play animportant role in the invasion and metastasis of HCC byoverexpression but not mutation.