EXPRESSION IN HUMAN HEPATOCELLULAR-CARCINOMA OF NUCLEOSIDE DIPHOSPHATE KINASE, A HOMOLOG OF THE NM23 GENE-PRODUCT

被引:178
作者
NAKAYAMA, T
OHTSURU, A
NAKAO, K
SHIMA, M
NAKATA, K
WATANABE, K
ISHII, N
KIMURA, N
NAGATAKI, S
机构
[1] NAGASAKI UNIV,SCH MED,DEPT INTERNAL MED 1,7-1 SAKAMOTO MACHI,NAGASAKI 852,JAPAN
[2] NAGASAKI UNIV,SCH MED,INST ATOM DIS,DEPT CELL PHYSIOL,NAGASAKI 852,JAPAN
[3] KYUSHU UNIV,INST TECHNOL,DEPT BIOCHEM ENGN TECHNOL,FUKUOKA 812,JAPAN
[4] NAGASAKI UNIV,CTR HLTH,NAGASAKI 852,JAPAN
[5] TOKYO METROPOLITAN GERIATR HOSP & INST GERONTOL,DEPT MOLEC BIOL,TOKYO 173,JAPAN
关键词
D O I
10.1093/jnci/84.17.1349
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Background: Expression of nucleoside diphosphate (NDP) kinase, which is highly homologous to the nm23 gene product in a variety of species, has been found to be inversely associated with metastatic potential in human breast cancer. Purpose: The present study was conducted to clarify the association of NDP kinase expression with metastatic potential in human hepatocellular carcinoma. Methods: The immunohistochemical expression of NDP kinase was analyzed in 30 patients with histopathologically proven hepatocellular carcinoma. These patients included nine with distant metastases and 21 without distant metastases. Tissue specimens were reacted with rabbit anti-rat NDP kinase antibody and stained by the biotin-streptavidin complex method. The relative staining intensities were evaluated by comparing primary tumor sites with adjacent nontumorous liver tissue or with metastatic sites. Results: The expression of NDP kinase in primary sites in patients with distant metastases was significantly less intense than that in patients without distant metastases (P = .018). NDP kinase was expressed significantly less intensely in metastatic sites than in primary sites (P = .005). The intensity of NDP kinase expression did not statistically correlate with tumor size or number of lesions in the liver, histopathological classification of tumor, associated liver diseases, hepatitis virus markers, or tumor markers. Conclusion: These results suggest that the reduced expression of NDP kinase is closely associated with distant metastatic potential in hepatocellular carcinoma. Implications: it is possible that both NDP kinase and the nm23 gene product may be active in the progression and differentiation of tumor cells and that their reduced expression induces a high metastatic potential in tumor cells. Studies using Northern blotting or in situ hybridization should be planned to confirm our findings.
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页码:1349 / 1354
页数:6
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