作者:Martin J. McPhillie、Ying Zhou、Mark R. Hickman、James A. Gordon、Christopher R. Weber、Qigui Li、Patty J. Lee、Kangsa Amporndanai、Rachel M. Johnson、Heather Darby、Stuart Woods、Zhu-hong Li、Richard S. Priestley、Kurt D. Ristroph、Scott B. Biering、Kamal El Bissati、Seungmin Hwang、Farida Esaa Hakim、Sarah M. Dovgin、Joseph D. Lykins、Lucy Roberts、Kerrie Hargrave、Hua Cong、Anthony P. Sinai、Stephen P. Muench、Jitender P. Dubey、Robert K. Prud'homme、Hernan A. Lorenzi、Giancarlo A. Biagini、Silvia N. Moreno、Craig W. Roberts、Svetlana V. Antonyuk、Colin W. G. Fishwick、Rima McLeod
DOI:10.3389/fcimb.2020.00203
日期:——
Apicomplexan infections cause substantial morbidity and mortality, worldwide. New, improved therapies are needed. Herein, we create a next generation anti-apicomplexan lead compound, JAG21, a tetrahydroquinolone, with increased sp3-character to improve parasite selectivity. Relative to other cytochromebinhibitors, JAG21 has improved solubility and ADMET properties, without need for pro-drug. JAG21 significantly reducesToxoplasma gondiitachyzoites and encysted bradyzoitesin vitro, and in primary and established chronic murine infections. Moreover, JAG21 treatment leads to 100% survival. Further, JAG21 is efficacious against drug-resistantPlasmodium falciparum in vitro. Causal prophylaxis and radical cure are achieved afterP. bergheisporozoite infection with oral administration of a single dose (2.5 mg/kg) or 3 days treatment at reduced dose (0.625 mg/kg/day), eliminating parasitemia, and leading to 100% survival. Enzymatic, binding, and co-crystallography/pharmacophore studies demonstrate selectivity for apicomplexan relative to mammalian enzymes. JAG21 has significant promise as a pre-clinical candidate for prevention, treatment, and cure of toxoplasmosis and malaria.