National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)
R01AI103947
米国
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)
R01AI155784
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
GM007062
米国
Cancer Prevention and Research Institute of Texas (CPRIT)
RP220582
米国
引用
ジャーナル: Cell Chem Biol / 年: 2024 タイトル: Identification of potent and reversible piperidine carboxamides that are species-selective orally active proteasome inhibitors to treat malaria. 著者: Aloysus Lawong / Suraksha Gahalawat / Sneha Ray / Nhi Ho / Yan Han / Kurt E Ward / Xiaoyi Deng / Zhe Chen / Ashwani Kumar / Chao Xing / Varun Hosangadi / Kate J Fairhurst / Kyuto Tashiro / ...著者: Aloysus Lawong / Suraksha Gahalawat / Sneha Ray / Nhi Ho / Yan Han / Kurt E Ward / Xiaoyi Deng / Zhe Chen / Ashwani Kumar / Chao Xing / Varun Hosangadi / Kate J Fairhurst / Kyuto Tashiro / Glen Liszczak / David M Shackleford / Kasiram Katneni / Gong Chen / Jessica Saunders / Elly Crighton / Arturo Casas / Joshua J Robinson / Leah S Imlay / Xiaoyu Zhang / Andrew Lemoff / Zhiyu Zhao / Iñigo Angulo-Barturen / María Belén Jiménez-Díaz / Sergio Wittlin / Simon F Campbell / David A Fidock / Benoît Laleu / Susan A Charman / Joseph M Ready / Margaret A Phillips / 要旨: Malaria remains a global health concern as drug resistance threatens treatment programs. We identified a piperidine carboxamide (SW042) with anti-malarial activity by phenotypic screening. Selection ...Malaria remains a global health concern as drug resistance threatens treatment programs. We identified a piperidine carboxamide (SW042) with anti-malarial activity by phenotypic screening. Selection of SW042-resistant Plasmodium falciparum (Pf) parasites revealed point mutations in the Pf_proteasome β5 active-site (Pfβ5). A potent analog (SW584) showed efficacy in a mouse model of human malaria after oral dosing. SW584 had a low propensity to generate resistance (minimum inoculum for resistance [MIR] >10) and was synergistic with dihydroartemisinin. Pf_proteasome purification was facilitated by His-tag introduction onto β7. Inhibition of Pfβ5 correlated with parasite killing, without inhibiting human proteasome isoforms or showing cytotoxicity. The Pf_proteasome_SW584 cryoelectron microscopy (cryo-EM) structure showed that SW584 bound non-covalently distal from the catalytic threonine, in an unexplored pocket at the β5/β6/β3 subunit interface that has species differences between Pf and human proteasomes. Identification of a reversible, species selective, orally active series with low resistance propensity provides a path for drugging this essential target.
名称: Proteasome subunit beta / タイプ: protein_or_peptide / ID: 13 詳細: tag was introduced using the CRISPR/Cas9 system at the endogenous locus コピー数: 2 / 光学異性体: LEVO