Buparlisib is a brain penetrable pan-PI3K inhibitor.

Buparlisib is a brain penetrable pan-PI3K inhibitor.
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DOI:
10.1038/s41598-018-29062-w
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发表时间:
2018-07-17
期刊:
影响因子:
4.6
通讯作者:
van Tellingen O
van Tellingen O
中科院分区:
综合性期刊3区
文献类型:
--
作者:
de Gooijer MC;Zhang P;Buil LCM;Çitirikkaya CH;Thota N;Beijnen JH;van Tellingen O

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颅内肿瘤的基因组景观的表征揭示了PI 3 K-AKT-mTOR通路在这些恶性肿瘤的肿瘤发生和肿瘤维持中的明确作用,使得磷脂酰肌醇3-激酶(PI 3 K)抑制成为这些肿瘤的有希望的治疗策略。Buparlisib是一种新型的泛PI 3 K抑制剂,目前正在临床开发用于各种癌症,包括原发性和继发性脑肿瘤。然而,重要的是,早期的研究表明,足够的脑渗透是对颅内肿瘤的抗肿瘤疗效的先决条件。因此,我们使用一组全面的体外和体内小鼠模型研究了buparlisib的脑渗透。我们证明,buparlisib具有良好的脑渗透性,不受血脑屏障外排转运蛋白的影响,在临床可达到的血浆浓度下具有完全的口服生物利用度和有效的颅内靶点抑制作用。总之,这些特征使buparlisib成为涉及PI 3 K抑制的颅内靶向治疗策略的理想候选者。
Characterization of the genomic landscapes of intracranial tumours has revealed a clear role for the PI3K-AKT-mTOR pathway in tumorigenesis and tumour maintenance of these malignancies, making phosphatidylinositol 3-kinase (PI3K) inhibition a promising therapeutic strategy for these tumours. Buparlisib is a novel pan-PI3K inhibitor that is currently in clinical development for various cancers, including primary and secondary brain tumours. Importantly however, earlier studies have revealed that sufficient brain penetration is a prerequisite for antitumor efficacy against intracranial tumours. We therefore investigated the brain penetration of buparlisib using a comprehensive set of in vitro and in vivo mouse models. We demonstrate that buparlisib has an excellent brain penetration that is unaffected by efflux transporters at the blood-brain barrier, complete oral bioavailability and efficient intracranial target inhibition at clinically achievable plasma concentrations. Together, these characteristics make buparlisib the ideal candidate for intracranially-targeted therapeutic strategies that involve PI3K inhibition.
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