The antimalarial natural product symplostatin 4 is a nanomolar inhibitor of the food vacuole falcipains.
The antimalarial natural product symplostatin 4 is a nanomolar inhibitor of the food vacuole falcipains.
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DOI:
10.1016/j.chembiol.2012.09.020
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发表时间:
2012-12-21
影响因子:
--
通讯作者:
Kaiser M
中科院分区:
文献类型:
--
作者:
Stolze SC;Deu E;Kaschani F;Li N;Florea BI;Richau KH;Colby T;van der Hoorn RA;Overkleeft HS;Bogyo M;Kaiser M
The marine natural product symplostatin 4 (Sym4) has been recognized as a potent antimalarial agent. However, its mode of action and, in particular, direct targets have to date remained elusive. We report a chemical synthesis of Sym4 and show that Sym4-treatment of P. falciparum-infected red blood cells (RBCs) results in the generation of a swollen food vacuole phenotype and a reduction of parasitemia at nanomolar concentrations. We furthermore demonstrate that Sym4 is a nanomolar inhibitor of the P. falciparum falcipains in infected RBCs, suggesting inhibition of the hemoglobin degradation pathway as Sym4’s mode of action. Finally, we reveal a critical influence of the unusual methylmethoxypyrrolinone (mmp) group of Sym4 for potent inhibition, indicating that Sym4 derivatives with such a mmp moiety might represent viable lead structures for the development of antimalarial falcipain inhibitors.
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DOI:
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发表时间:
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影响因子:
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