Elexacaftor co-potentiates the activity of F508del and gating mutants of CFTR.

Elexacaftor co-potentiates the activity of F508del and gating mutants of CFTR.
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Elexacaftor共增强CFTR的F508del和门控突变体的活性。

DOI:
10.1016/j.jcf.2021.03.011
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发表时间:
2021-09
期刊:
Journal of cystic fibrosis : official journal of the European Cystic Fibrosis Society
影响因子:
--
通讯作者:
Lukacs GL
Lukacs GL
中科院分区:
其他
文献类型:
--
作者:
Veit G;Vaccarin C;Lukacs GL

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Trikafta,elexacaftor(VX-445),tezacaftor(VX-661)和ivacaftor(VX-770)的组合,被批准用于治疗至少有一个CFTR突变F508 del等位基因的囊性纤维化(CF)患者。虽然VX-445的校正功能已得到很好的确立,但在此我们研究了VX-445单独使用和与VX-770联合使用的推定增效剂活性。在人支气管和鼻上皮细胞中,VX-445的急性添加使VX-770增强的F508 del-和G551 D-CFTR电流分别增加约24%和> 70%。G551 D-和G1244 E-CFTR通道激活增效剂对的组合分析和聚类分析表明,VX-445的作用机制不同,至少是先前确定的增效剂类别(包括VX-770)的添加剂。由于VX-770仅部分使G551 D-CFTR通道功能正常化,并且成年G551 D患者仍然经历肺功能进行性丧失,因此VX-445+VX-770联合治疗可以为患有G551 D和其他双增强剂反应突变体的CF患者提供临床益处。
Trikafta, the combination of elexacaftor (VX-445), tezacaftor (VX-661) and ivacaftor (VX-770), was approved for therapy of cystic fibrosis (CF) patients with at least one allele of the CFTR mutation F508del. While the corrector function of VX-445 is well established, here we investigated the putative potentiator activity of VX-445 alone and in combination with VX-770. Acute addition of VX-445 increased the VX-770-potentiated F508del- and G551D-CFTR current by ~24% and >70%, respectively, in human bronchial and nasal epithelia. Combinatorial profiling and cluster analysis of G551D- and G1244E-CFTR channel activation to potentiator pairs indicated a distinct VX-445 mechanism of action that is, at least, additive to previously identified potentiator classes, including the VX-770. Since VX-770 only partially normalizes the G551D-CFTR channel function and adult G551D patients still experience progressive loss of lung function, VX-445+VX-770 combination therapy could provide clinical benefit to CF patients with the G551D and other dual potentiator responsive mutants.
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发表时间: 2018-11
期刊: Nature medicine
影响因子: 82.9
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影响因子: 3.3
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