Journal
VIRCHOWS ARCHIV
Volume 454, Issue 6, Pages 639-646Publisher
SPRINGER
DOI: 10.1007/s00428-009-0772-4
Keywords
Dickkopf 3; Hepatoblastoma; Hepatocellular carcinoma; Heterogeneity
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Funding
- Ministry of Education, Culture, Sports, Science, and Technology of Japan [14570178, 17590335]
- Grants-in-Aid for Scientific Research [14570178, 17590335] Funding Source: KAKEN
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Dickkopf 3 (Dkk3) is a protein expressed at a very early stage of hepatogenesis. In this study, we examined whether Dkk3 was related to a premature or dedifferentiated nature in hepatoblastomas (HBLs) and hepatocellular carcinomas (HCCs). It was demonstrated that Dkk3 was overexpressed in HBLs and HCCs and that its expression was more frequent in the former than in the latter, being consistent with the fact that most HBLs show an embryonal or fetal hepatic histology, whereas there was no distinct relationship between Dkk3 expression and clinical data or histology. All of the HBLs expressed Dkk3, alpha-fetoprotein (AFP), or both proteins, suggesting that, similar to AFP, Dkk3 is another potentially useful biomarker detecting a wide range of HBLs. Furthermore, Dkk3 and AFP were expressed reciprocally in the tumors. These results suggest that Dkk3 may be related to the premature or dedifferentiated nature of HBLs and HCCs, whereas AFP may be related to a more differentiated nature. Thus, assessment of Dkk3 and AFP may be useful in the diagnosis of hepatic tumors.
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