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ASCO 2014:GDF15为口腔鳞癌化疗预后的一种生物标志物

2014-05-28 MedSci MedSci原创

摘要号:6037 第一作者:上海交通大学医学院附属第九人民医院口腔颌面外科 钟来平 背景: 随机试验表明,与单独标准疗法相比,诱导化学疗法联合标准疗法治疗口腔鳞状细胞癌(OSCC) 并没有显著的生存效益。诱导化学疗法很可能对具有明显生物学特征的患者亚组具有疗效,开发生物标志物或可帮助识别那些可能对某种特定疗法具有反应的肿瘤患者。 方法:在一项对诱导化学疗法(

摘要号:6037

第一作者:上海交通大学医学院附属第九人民医院口腔颌面外科 钟来平

背景: 随机试验表明,与单独标准疗法相比,诱导化学疗法联合标准疗法治疗口腔鳞状细胞癌(OSCC) 并没有显著的生存效益。诱导化学疗法很可能对具有明显生物学特征的患者亚组具有疗效,开发生物标志物或可帮助识别那些可能对某种特定疗法具有反应的肿瘤患者。

方法:在一项对诱导化学疗法(包括多西他赛、顺铂和5-氟尿嘧啶(TPF))进行的前瞻性、随机III期试验中,对 256例接受治疗的230例OSCC患者的治疗前活检标本进行GDF15免疫组化染色评估;使用体外和体内OSCC模型,对GDF15干预与细胞增殖、迁移、侵袭、集落形成和致瘤性之间的关系进行分析。

结果: GDF15低表达预示着OSCC患者的生存期较好,特别是总生存期(P = 0.049,HR=0.597)和无远处转移生存期(P = 0.031,HR=0.562)。与GDF15高表达相比,GDF15低表达还预示着患者对TPF诱导化学疗法的临床反应较好(P=0.004)。 OSCC 中GDF15表达的降低可使AKT和ERK1/2的磷酸化作用增强,从而对细胞增殖、迁移、侵袭和集落形成以及肿瘤发生起到显著的抑制作用(P <0.05)。同样,GDF15过表达可通过降低AKT和ERK1/2的磷酸化作用,显著促进细胞增殖、迁移、侵袭和集落形成(p <0.05)。

结论:GDF15表达可作为口腔鳞状细胞癌的一种预后生物标志物。GDF15的低表达水平预示着口腔鳞癌患者对TPF诱导化学疗法的临床缓解率较高。 GDF15可通过OSCC患者中的AKT和ERK1/2磷酸化作用促进肿瘤的发生和进展。

研究链接:GDF15 as a potential predictive biomarker for TPF induction chemotherapy in oral squamous cell carcinoma. (Abstract 6037)

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