PNAS:乳腺癌治疗的新方法“免疫激活细胞因子”

2017-12-19 白木清水译自 medicalxpress 来宝网

根据凯斯西储大学医学院病例综合癌症中心的最新研究,最致命的乳腺癌形式可能有新的治疗选择。在“美国国家科学院院刊”上,研究人员发现,三阴性乳腺癌细胞极易受干扰素-β一种有效的抗微生物药物的影响,这种抗微生物药物也能激活免疫系统。这项新的研究显示干扰素-β损害乳腺癌细胞迁移和形成肿瘤的能力。

根据凯斯西储大学医学院病例综合癌症中心的最新研究,最致命的乳腺癌形式可能有新的治疗选择。在“美国国家科学院院刊”上,研究人员发现,三阴性乳腺癌细胞极易受干扰素-β一种有效的抗微生物药物的影响,这种抗微生物药物也能激活免疫系统。这项新的研究显示干扰素-β损害乳腺癌细胞迁移和形成肿瘤的能力。该研究还表明干扰素-β治疗可以改善某些乳腺癌患者的治疗效果。

凯斯西储大学医学院第一作者,病理学研究生Mary Doherty说:“我们证明干扰素-β可以逆转三阴性乳腺癌的一些更具侵袭性的特征,这些特征是导致转移和治疗失败的原因。此外,我们发现三阴性乳腺癌肿瘤中干扰素-β的证据与化疗后患者生存率的改善相关。”

Doherty的顾问,Mark Jackson博士,病理学副教授,培训和教育副主任,凯斯西保留地大学医学院综合癌症中心,是该研究的资深作者。该研究团队还包括克利夫兰诊所的勒纳研究所、克利夫兰医学中心、斯坦福大学医学院和癌症综合治疗中心的其他成员。

三阴性乳腺癌是一种最致命、最具侵略性的乳腺癌。它传播迅速,对许多可用的化学疗法有耐药性。即使在治疗成功的时候,肿瘤也会复发。Doherty说:“虽然化疗杀死了大多数肿瘤细胞,但它不能消除一组癌细胞,即癌症干细胞。这些癌症干细胞的存活被认为是治疗失败的原因。

新的研究显示干扰素-β直接靶向癌症干细胞。在实验室培养皿中,干扰素-β的常规治疗使得三阴性乳腺癌干细胞迁移 - 转移的第一步。停止治疗两天后,添加干扰素-β的培养皿大约有一半的迁移干细胞作为对照。暴露于干扰素-β的细胞也缺乏早期肿瘤特征性的标记物,并且不能聚集成肿瘤样的球体。

研究人员使用乳腺癌组织数据库验证了他们的实验室结果。他们发现乳房组织中干扰素-β水平升高与患者生存期延长和癌症复发率降低有关。乳腺组织中干扰素-β水平较高的患者比低水平患者复发的可能性低25%左右。作者的结论是干扰素-β在三阴乳腺癌预后中起着“积极的关键作用”。

研究人员正在研究干扰素-β如何调节免疫系统来发挥其抗癌作用。他们还计划进行临床试验评估干扰素β作为三阴性乳腺癌的新的治疗选择,无论是单独或与传统化疗组合。这样的研究可能需要新的方法来递送干扰素-β到乳腺癌肿瘤。 Doherty说:“我们未来的研究将考察改进的干扰素β递送到纳入纳米颗粒技术的肿瘤部位的方法。”这些研究一起可以扩大患耐药乳腺癌患者的治疗选择。

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    2018-07-19 kord1982
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    2017-12-22 drwjr
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    2017-12-20 沙漠浪人

    三阴性乳腺癌是一种最致命.最具侵略性的乳腺癌

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