A potent series targeting the malarial cGMP-dependent protein kinase clears infection and blocks transmission.
A potent series targeting the malarial cGMP-dependent protein kinase clears infection and blocks transmission.
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DOI:
10.1038/s41467-017-00572-x
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发表时间:
2017-09-05
影响因子:
16.6
通讯作者:
Osborne SA
中科院分区:
文献类型:
--
作者:
Baker DA;Stewart LB;Large JM;Bowyer PW;Ansell KH;Jiménez-Díaz MB;El Bakkouri M;Birchall K;Dechering KJ;Bouloc NS;Coombs PJ;Whalley D;Harding DJ;Smiljanic-Hurley E;Wheldon MC;Walker EM;Dessens JT;Lafuente MJ;Sanz LM;Gamo FJ;Ferrer SB;Hui R;Bousema T;Angulo-Barturén I;Merritt AT;Croft SL;Gutteridge WE;Kettleborough CA;Osborne SA
To combat drug resistance, new chemical entities are urgently required for use in next generation anti-malarial combinations. We report here the results of a medicinal chemistry programme focused on an imidazopyridine series targeting the Plasmodium falciparum cyclic GMP-dependent protein kinase (PfPKG). The most potent compound (ML10) has an IC50 of 160 pM in a PfPKG kinase assay and inhibits P. falciparum blood stage proliferation in vitro with an EC50 of 2.1 nM. Oral dosing renders blood stage parasitaemia undetectable in vivo using a P. falciparum SCID mouse model. The series targets both merozoite egress and erythrocyte invasion, but crucially, also blocks transmission of mature P. falciparum gametocytes to Anopheles stephensi mosquitoes. A co-crystal structure of PvPKG bound to ML10, reveals intimate molecular contacts that explain the high levels of potency and selectivity we have measured. The properties of this series warrant consideration for further development to produce an antimalarial drug. Protein kinases are promising drug targets for treatment of malaria. Here, starting with a medicinal chemistry approach, Baker et al. generate an imidazopyridine that selectively targets Plasmodium falciparum PKG, inhibits blood stage parasite growth in vitro and in mice and blocks transmission to mosquitoes.
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DOI:
10.1016/s1473-3099(15)00487-9
发表时间:
2016-03
期刊:
The Lancet. Infectious diseases
影响因子:
--
作者:
Amaratunga C;Lim P;Suon S;Sreng S;Mao S;Sopha C;Sam B;Dek D;Try V;Amato R;Blessborn D;Song L;Tullo GS;Fay MP;Anderson JM;Tarning J;Fairhurst RM
通讯作者:
Fairhurst RM
影响因子:
6.7
作者:
Collins CR;Hackett F;Strath M;Penzo M;Withers-Martinez C;Baker DA;Blackman MJ
通讯作者:
Blackman MJ
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
影响因子:
4.9
作者:
Belen Jimenez-Diaz, Maria;Mulet, Teresa;Angulo-Barturen, Inigo
通讯作者:
Angulo-Barturen, Inigo
DOI:
10.1073/pnas.1414221111
发表时间:
2014-12-16
影响因子:
11.1
作者:
Belen Jimenez-Diaz, Maria;Ebert, Daniel;Guy, R. Kiplin
通讯作者:
Guy, R. Kiplin