國家衛生研究院 NHRI:Item 3990099045/2276
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    題名: P53 gene and wnt signaling in benign neoplasms: beta-Catenin mutations in hepatic adenoma but not in focal nodular hyperplasia
    其他題名: p53 gene and wnt signaling in benign neoplasms: β-catenin mutations in hepatic adenoma but not in focal nodular hyperplasia
    作者: Chen, YW;Jeng, YM;Yeh, SH;Chen, PJ
    貢獻者: Division of Molecular and Genomic Medicine
    摘要: Hepatocellular adenoma (HA) and focal nodular hyperplasia (FNH) arc 2 rare, benign liver neoplasms that often are discovered incidentally. To date, few genetic changes have been found in these 2 benign lesions. However, the 2 pathways of p53 and Wnt signaling, which may be the most common molecular targets involved in liver tumorgenesis, were studied in HA and FNH. Ten HAs and 11 FNHs were analyzed for loss of heterozygosity (LOH) and sequencing analysis of mutation hot spots in exons 5 to 8 of the p53 gene. No LOH or mutant sequences were identified, indicating that p53 was not associated with these benign lesions. Genes in the Wnt signaling pathway, including beta-catenin, axin, and adenomatous polyposis coli (APC), also were studied. Polymerase chain reaction (PCR) amplification and direct sequencing of all samples of HA and FNH displayed no mutations in exon 3 of the beta-catenin gene. However, 3 HAs (30%) contained interstitial deletions from exon 3 to exon 4. Truncated forms of beta-catenin detected by Western blot and immunohistochemical analyses showed they had accumulated in the cytoplasm and nuclei. However, for the axin and APC genes, no genetic changes, including allelic loss, interstitial deletions and point mutations, were detected in any of the HAs and FNHs. In conclusion, beta-catenin, which participates in the Wnt signaling pathway, might play a more important role in the formation of HA than in that of FNH, but p53 is not associated with the development of either HA or FNH.
    關鍵詞: Gastroenterology & Hepatology
    日期: 2002-10
    關聯: Hepatology. 2002 Oct;36(4 Pt. 1):927-935.
    Link to: http://dx.doi.org/10.1053/jhep.2002.36126
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0270-9139&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000178301100017
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0036788535
    顯示於類別:[葉秀慧(2001-2005)] 期刊論文

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