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Clin Cancer Res:RNAScope能识别早期乳腺癌免疫治疗新靶标PD-L1

2014-07-24 佚名 生物谷

近日,耶鲁大学癌症中心研究人员利用一种新的分子分析工具RNAScope,准确地检测出针对早期乳腺癌的免疫治疗的一个重要靶标的水平。 诊断测试使用RNAScope,测量福尔马林固定的癌组织中PD-L1(细胞程序性死亡配体PD L1)mRNA的量。(编者注:RNAscope是一种新型 RNA原位杂交技术,基于其独特的探针设计与背景抑制技术,并且融合传统RNA原位杂交技术与FISH技术的优点,使单

近日,耶鲁大学癌症中心研究人员利用一种新的分子分析工具RNAScope,准确地检测出针对早期乳腺癌的免疫治疗的一个重要靶标的水平。

诊断测试使用RNAScope,测量福尔马林固定的癌组织中PD-L1(细胞程序性死亡配体PD L1)mRNA的量。(编者注:RNAscope是一种新型 RNA原位杂交技术,基于其独特的探针设计与背景抑制技术,并且融合传统RNA原位杂交技术与FISH技术的优点,使单个RNA的转录变得可视化,是目前最精准的RNA检测技术。)

PD-L1是目前几种新型免疫刺激疗法的靶标。这项研究结果发表在Clinical Cancer Research杂志上。


PD-L1是在抑制免疫应答中起重要作用的蛋白,并且在癌症中,它可以允许肿瘤逃避免疫攻击。该研究证明,约60%的早期乳腺癌有PD-L1表达,这些癌症患者体内也有大量的肿瘤浸润淋巴细胞。

高水平肿瘤浸润性淋巴细胞和PD-L1预示患者能更好地存活,这暗示两者对免疫系统具有有益的作用。Lajos Pusztai医学博士表示:这是令人兴奋的,因为这些发现为测试针对PD-L1的免疫疗法治疗乳腺癌提供了理论基础,将有助于进一步提高早期乳腺癌治愈率。

研究人员表示:高数量肿瘤浸润性淋巴细胞(tumor infiltrating lymphocytes,TIL )和高PD-L1表达的乳腺癌病人可能是针对PD-L1的免疫疗法的理想候选患者。

原始出处:

Researchers identify targets for immunotherapy in early-stage breast cancer.medical xpress.July 18, 2014

Schalper KA1, Velcheti V2, Carvajal D2, Wimberly H2, Brown J2, Pusztai L2, Rimm DL2.In situ tumor PD-L1 mRNA expression is associated with increased TILs and better outcome in breast carcinomas.Clin Cancer Res. 2014 May 15;20(10):2773-82. doi: 10.1158/1078-0432.CCR-13-2702. Epub 2014 Mar 19.

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    2014-10-23 dzx0922889
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    2015-05-15 quxin068
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    2015-04-23 feather89
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    2014-07-26 smartjoy
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    2014-07-26 zhaojie88

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