國家衛生研究院 NHRI:Item 3990099045/2908
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    Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/2908


    Title: PIK3CA as an oncogene in cervical cancer
    Authors: Ma, YY;Wei, SJ;Lin, YC;Lung, JC;Chang, TC;Whang-Peng, J;Liu, JM;Yang, DM;Yang, WK;Shen, CY
    Contributors: National Institute of Cancer Research
    Abstract: Amplification of chromosome arm 3q is the most consistent aberration in cervical cancer, and is implicated in the progression of dysplastic uterine cervical cells into invasive cancer. The present study employed the 'positional candidate gene' strategy to determine the contribution of PIK3CA, which is located in 3q26.3, in cervical tumorigenesis, PIK3CA is known to be involved in the PI 3-kinase/AKT signaling pathway, which plays an important role in regulating cell growth and apoptosis, The results of comparative genomic hybridization show that the 3q26.3 amplification was the most consistent chromosomal aberration in primary tissues of cervical carcinoma, and a positive correlation between an increased copy number of PIK3CA (detected by competitive PCR) and 3q26.3 amplification was found in tumor tissues and in cervical cancer cell lines. In cervical cancer cell lines harboring amplified PIK3CA, the expression of gene product (p110 alpha) of PIK3CA was increased, and was subsequently associated with high kinase activity. In addition, transformation phenotypes in these lines, including increased cell growth and decreased apoptosis, were found to be significantly affected by the treatment of specific PI 3-kinase inhibitor, suggesting that increased expression of PIK3CA in cervical cancer may result in promoting cell proliferation and reducing apoptosis, These evidences support that PIK3CA is an oncogene in cervical cancer and PIK3CA amplification may be linked to cervical tumorigenesis.
    Keywords: Biochemistry & Molecular Biology;Oncology;Cell Biology;Genetics & Heredity
    Date: 2000-05-25
    Relation: Oncogene. 2000 May;19(23):2739-2744.
    Link to: http://dx.doi.org/10.1038/sj.onc.1203597
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0950-9232&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000087318500002
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0034713390
    Appears in Collections:[Wen-Kuang Yang(1996-1999)] Periodical Articles
    [Ming Jacqueline Liu(1996-2007)] Periodical Articles
    [Jacqueline Whang-Peng(1996-2007)] Periodical Articles
    [Yen-Ying Ma(1997-1999)] Periodical Articles

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