國家衛生研究院 NHRI:Item 3990099045/2661
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    Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/2661


    Title: Human kallikrein 8 protease confers a favorable clinical outcome in non-small cell lung cancer by suppressing tumor cell invasiveness
    Authors: Sher, YP;Chou, CC;Chou, RH;Wu, HM;Chang, WSW;Chen, CH;Yang, PC;Wu, CW;Yu, CL;Peck, K
    Contributors: National Institute of Cancer Research
    Abstract: The human kallikrein 8 (laKS) gene, a member of the human tissue kallikrein gene family, encodes a serine protease. The KLK8 protein (hK8) is known to be a favorable prognostic marker in ovarian cancer, but the biological basis of this is not understood. We found that overexpressing the KLK8 gene in highly invasive lung cancer cell lines suppresses their invasiveness. This role in invasiveness was further confirmed by the fact that inhibition of endogenous KLKS expression with a specific short hairpin RNA reduced cancer cell invasiveness. In situ degradation and cell adhesion assays showed that proteins produced from KLKS splice variants modify the extracellular microenvironment by cleaving fibronectin. DNA microarray experiments and staining of cells for actin filaments revealed that the degradation of fibronectin by hK8 suppresses integrin signaling and retards cancer cell motility by inhibiting actin polymerization. In addition, studies in a mouse model coupled with the detection of circulating tumor cells by quantitative PCR for the human Alu sequence showed that KLKS suppresses tumor growth and invasion in vivo. Finally, studies of clinical specimens from patients with non-small cell lung cancer showed that the time to postoperative recurrence was longer for early-stage patients (stages I and II) with high KLKS expression (mean, 49.9 months) than for patients with low KLK8 expression (mean, 22.9 months). Collectively, these findings show that KLK8 expression confers a favorable clinical outcome in nonsmall cell luncr cancer by suppressing tumor cell invasiveness.
    Keywords: Oncology
    Date: 2006-12-15
    Relation: Cancer Research. 2006 Dec;66(24):11763-11770.
    Link to: http://dx.doi.org/10.1158/0008-5472.CAN-06-3165
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0008-5472&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000242915600032
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=33846241278
    Appears in Collections:[Cheng-Wen Wu(1996-2008)] Periodical Articles
    [Wun-Shaing Wayne Chang] Periodical Articles

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