J Hematol Oncol:血液肿瘤治疗新方法让肿瘤细胞无处藏身

2017-06-28 常路 环球医学

研究人员已经开发了一种双管齐下的血液肿瘤治疗方法:1)直接攻击肿瘤细胞和/或2)将它们从培育的骨髓环境驱赶到外周血液中,在此肿瘤细胞比较脆弱(例如,对化疗)。该项体内临床前研究发表在美国血液学学会(ASH)杂志《Blood Advances》上。结果表明,该疗法可以潜在地治疗多种肿瘤,包括非霍奇金淋巴瘤(NHL)、多发性骨髓瘤(MM)和急性骨髓性白血病(AML)。

研究人员已经开发了一种双管齐下的血液肿瘤治疗方法:1)直接攻击肿瘤细胞和/或2)将它们从培育的骨髓环境驱赶到外周血液中,在此肿瘤细胞比较脆弱(例如,对化疗)。该项体内临床前研究发表在美国血液学学会(ASH)杂志《Blood Advances》上。结果表明,该疗法可以潜在地治疗多种肿瘤,包括非霍奇金淋巴瘤(NHL)、多发性骨髓瘤(MM)和急性骨髓性白血病(AML)。

肿瘤研究与开发的Flavia Pernasetti教授表示,我们在治疗血液肿瘤中发现的主要局限性之一是未能从骨髓中清除肿瘤细胞。因为骨髓环境允许肿瘤细胞蓬勃发展,去除这些细胞是有效治疗这些恶性肿瘤的重要一步。我们的方法不但有可能使这些肿瘤细胞脱离骨髓,使它们更容易受到标准治疗的影响,而且也被设计为直接攻击肿瘤细胞。我们的初步临床前研究结果令人鼓舞,我们非常高兴看到我们的抗体在临床检测中的价值。

骨髓作为肿瘤细胞的保护性住所,提供营养,使其能够繁殖。认识到骨髓与肿瘤恢复力之间的相关性,Pernasetti教授和她的团队将他们的方法集中在从骨髓中驱赶肿瘤的机制上。为了做到这一点,该团队首先考虑了控制细胞进入骨髓的机制——CXCR4,一种趋化因子受体及其配体CXCL12。

虽然对抑制CXCR4的药物进行了广泛的研究,但是研究团队力求进一步改进这一概念。研究人员开发了一种抗体PF-06747143,它不仅可以将细胞移入较少的保护环境,在那里可以被其他治疗方法杀死,而且临床前研究也显示出其能直接攻击并杀死肿瘤细胞。

研究人员观察到抗体单独使用或与标准化疗联合用于NHL、MM和AML小鼠模型的有效性。在所有情况下,与标准治疗相比,涉及抗体的治疗(无论是单独使用还是与化疗联合使用)似乎都能根除更多的肿瘤细胞。

在AML中观察到显着的成功。当抗体用作独立治疗时,研究人员看到肿瘤细胞减少了95.9%。当在难治AML模型中与标准化疗药物柔红霉素和阿糖胞苷联用时,99.7%的肿瘤细胞被杀死。

目前,正在评估PF-06747143的安全性和有效性的早期症状,作为AML患者I期临床试验的一部分。

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    2017-08-17 minlingfeng
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    2017-10-25 kord1982
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    2017-06-30 fengyi812
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    2017-06-29 hfuym10906

    学习了。。。。

    0

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    2017-06-28 luominglian113

    学习了,谢谢分享

    0

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