A multistage antimalarial targets the plasmepsins IX and X essential for invasion and egress.

A multistage antimalarial targets the plasmepsins IX and X essential for invasion and egress.
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DOI:
10.1126/science.aaf8675
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发表时间:
2017-10-27
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Soldati-Favre D
Soldati-Favre D
中科院分区:
其他
文献类型:
--
作者:
Pino P;Caldelari R;Mukherjee B;Vahokoski J;Klages N;Maco B;Collins CR;Blackman MJ;Kursula I;Heussler V;Brochet M;Soldati-Favre D

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分泌细胞器调节的胞吐作用对疟原虫的入侵和逃逸很重要。许多寄生虫效应蛋白,包括穿孔素、粘附素和蛋白酶,在胞吐前和胞吐后都被广泛地蛋白水解加工。在这里,我们报告了天冬氨酸蛋白酶抑制剂羟乙基胺为基础的支架化合物,49 c的多阶段抗疟原虫活性。该支架通过分别靶向相应的成熟酶浆蛋白酶IX(PfPMIX)和X(PfPMX)来抑制几种分泌的棒状体和微线体蛋白的胞吐前加工。PfPMIX的条件切除揭示了其在入侵中的关键作用,并且重组活性PfPMIX和PfPMX以49C敏感的方式切割出口和入侵因子。
Regulated exocytosis by secretory organelles is important for malaria parasite invasion and egress. Many parasite effector proteins, including perforins, adhesins, and proteases, are extensively proteolytically processed both pre- and post-exocytosis. Here, we report the multi-stage anti-plasmodial activity of the aspartic protease inhibitor hydroxyl-ethyl-amine-based scaffold compound, 49c. This scaffold inhibits the pre-exocytosis processing of several secreted rhoptry and microneme proteins by targeting the corresponding maturases plasmepsins IX (PfPMIX) and X (PfPMX), respectively. Conditional excision of PfPMIX revealed its crucial role in invasion, and recombinantly active PfPMIX and PfPMX cleave egress and invasion factors in a 49c sensitive manner.
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发表时间: 2003-10
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影响因子: 9.8
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