JCO:三阴性乳腺癌治疗的新靶标

2014-12-04 佚名 生物谷

新加坡A * STAR基因组研究所(GIS)科学家与当地临床医生和美国同事合作,确定了一种与三阴性乳腺癌(TNBC)相关的生物标志物。新发现的生物标记物称为RASAL2基因,RASAL2基因或是治疗这种致命疾病的新靶标。 三阴乳腺癌是致命,因为其不同于其他类型的乳腺癌如雌激素受体(ER)阳性乳腺癌,靶向疗法能有效治疗ER阳性乳腺癌,但三阴乳腺癌肿瘤对靶向治疗无反应。 乳腺癌有许多亚型,每种类型

新加坡A * STAR基因组研究所(GIS)科学家与当地临床医生和美国同事合作,确定了一种与三阴性乳腺癌(TNBC)相关的生物标志物。新发现的生物标记物称为RASAL2基因,RASAL2基因或是治疗这种致命疾病的新靶标。

三阴乳腺癌是致命,因为其不同于其他类型的乳腺癌如雌激素受体(ER)阳性乳腺癌,靶向疗法能有效治疗ER阳性乳腺癌,但三阴乳腺癌肿瘤对靶向治疗无反应。

乳腺癌有许多亚型,每种类型都有自己的基因构成。因此,不同的亚型有不同的侵袭和转移能力。使用乳腺癌细胞系,以及从患者样本中获得的基因组数据,分子生物学家Min Feng和她的同事采用综合方法来搜索可能有助于解释TNBC细胞高转移潜能的基因。

Feng博士发现一种微小RNA(通常被称microRNA)在高转移性三阴乳腺癌细胞中是缺失的,但在管腔乳腺癌中是存在的。RASAL2在TNBC中是上调的,该研究显示,相比有低水平RASAL2的患者,高表达RASAL2的三阴乳腺癌患者,具有较低的存活率。此外,研究表明敲除RASAL2基因可以导致乳腺癌小鼠模型中乳腺癌转移减少。

这项研究结果发表在杂志Journal of Clinical Investigation (JCI)上。

原始出处

Couch FJ1, Hart SN2, Sharma P2, Toland AE2, Wang X2, Miron P2, Olson JE2, Godwin AK2, Pankratz VS2, Olswold C2, Slettedahl S2, Hallberg E2, Guidugli L2, Davila JI2, Beckmann MW2, Janni W2, Rack B2, Ekici AB2, Slamon DJ2, Konstantopoulou I2, Fostira F2, Vratimos A2, Fountzilas G2, Pelttari LM2, Tapper WJ2, Durcan L2, Cross SS2, Pilarski R2, Shapiro CL2, Klemp J2, Yao S2, Garber J2, Cox A2, Brauch H2, Ambrosone C2, Nevanlinna H2, Yannoukakos D2, Slager SL2, Vachon CM2, Eccles DM2, Fasching PA2.Inherited Mutations in 17 Breast Cancer Susceptibility Genes Among a Large Triple-Negative Breast Cancer Cohort Unselected for Family History of Breast Cancer.J Clin Oncol. 2014 Dec 1.

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    2015-06-26 lidong40
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    2014-12-06 zhaojie88
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    2014-12-06 xlysu

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