國家衛生研究院 NHRI:Item 3990099045/2888
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    Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/2888


    Title: Inhibition of DNA synthesis by downregulation of cyclin A but not Skp 2 overexpression in human hepatocellular carcinoma cells
    Authors: Chao, Y;Shih, YL;Chen, HJ;Lee, SD;Huang, TS
    Contributors: National Institute of Cancer Research
    Abstract: Cyclin A is an S and G(2)/M phase regulatory protein and associates with Skp 2 in many transformed cells. Our previous results showed that 12 (39%) and 17 (55%) out of 31 hepatocellular carcinoma (HCC) patients exhibited higher protein expression levels of cyclin A and Skp 2, respectively, in their tumorous compared to non-tumorous tissues. In the present study, we used Western blot analysis to show that 3 out of 6 HCC cell lines, HA59T, HA22T and HCC36, exhibited overexpression of cyclin A, among which the HCC36 cell line also expressed a higher Skp 2 protein level. Moreover, we used the antisense oligonucleotide phosphorothioates to down regulate the overexpression of cyclin A and Skp 2 proteins to determine whether or not these two proteins are involved in the mitogenesis of HCC36 cells. After treatment with antisense oligonucleotide phosphorothioates, the gene product of cyclin A or Skp 2 was suppressed dose-dependently as revealed by Western blot analyses. By [H-3]thymidine incorporation assay, we found that downregulation of cyclin A but not Skp 2 overexpression could inhibit the DNA synthesis ability of HCC36 cells, suggesting that abnormal Skp 2 expression is not directly correlated with the HCC proliferation. (C) 1999 Elsevier Science Ireland Ltd. All rights reserved.
    Keywords: Oncology
    Date: 1999-05-03
    Relation: Cancer Letters. 1999 May;139(1):1-6.
    Link to: http://dx.doi.org/10.1016/S0304-3835(98)00352-8
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0304-3835&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000080658000001
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0032899622
    Appears in Collections:[Tze-Sing Huang] Periodical Articles

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