RESUMO
Objective To investigate the expression of Kruppel like factor 8(KLF8)in human renal cell carcinoma(RCC)specimens and clinical significance.Methods RT-PCR and immunohistochemistry were used to detect the KLF8 mRNA and protein expression respectively in RCC cell strain 786-0,OS-RC-2 with 37 RCC specimens and adjacent normal tissues of the same patients.Results The expression of KLF8 mRNA was high in RCC cell strain 786-0,OS-RC-2,was 0.80±0.28 and 0.41±0.11 in the RCC specimens and normal tissues respectively(P＜0.01).The level of KLF8 protein expression of 37 RCC specimens(17 was expressed at++-+++)was significantly higher than that of the normal tissues(29 was expressed at--+)(P＜0.01).KLF protein was high expressed in RCC cell strain 786-0,OS-RC-2.The levels of KLF8 mRNA and protein expression were positively correlated with the tumor size,cell differentiation,clinical stage,but not correlated with the patients sex and age.Conclusions The KLF8 mRNA and protein expressions are elevated in the human RCC.KLF8 may be involved in the development and progression of RCC.