Imperial College London
Alternate

Emeritus ProfessorRobertSinden

Faculty of Natural Sciences, Department of Life Sciences

Emeritus Professor of Parasite Cell Biology
 
 
 
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Contact

 

r.sinden Website

 
 
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Location

 

2.1Centre for Population BiologySilwood Park

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Summary

 

Publications

Citation

BibTex format

@article{Baragaña:2019:10.1073/pnas.1814685116,
author = {Baragaña, B and Forte, B and Choi, R and Nakazawa, Hewitt S and Bueren-Calabuig, JA and Pisco, JP and Peet, C and Dranow, DM and Robinson, DA and Jansen, C and Norcross, NR and Vinayak, S and Anderson, M and Brooks, CF and Cooper, CA and Damerow, S and Delves, M and Dowers, K and Duffy, J and Edwards, TE and Hallyburton, I and Horst, BG and Hulverson, MA and Ferguson, L and Jiménez-Díaz, MB and Jumani, RS and Lorimer, DD and Love, MS and Maher, S and Matthews, H and McNamara, CW and Miller, P and O'Neill, S and Ojo, KK and Osuna-Cabello, M and Pinto, E and Post, J and Riley, J and Rottmann, M and Sanz, LM and Scullion, P and Sharma, A and Shepherd, SM and Shishikura, Y and Simeons, FRC and Stebbins, EE and Stojanovski, L and Straschil, U and Tamaki, FK and Tamjar, J and Torrie, LS and Vantaux, A and Witkowski, B and Wittlin, S and Yogavel, M and Zuccotto, F and Angulo-Barturen, I and Sinden, R and Baum, J and Gamo, F-J and Mäser, P and Kyle, DE and Winzeler, EA and Myler, PJ and Wyatt,},
doi = {10.1073/pnas.1814685116},
journal = {Proc Natl Acad Sci U S A},
title = {Lysyl-tRNA synthetase as a drug target in malaria and cryptosporidiosis.},
url = {http://dx.doi.org/10.1073/pnas.1814685116},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Malaria and cryptosporidiosis, caused by apicomplexan parasites, remain major drivers of global child mortality. New drugs for the treatment of malaria and cryptosporidiosis, in particular, are of high priority; however, there are few chemically validated targets. The natural product cladosporin is active against blood- and liver-stage Plasmodium falciparum and Cryptosporidium parvum in cell-culture studies. Target deconvolution in P. falciparum has shown that cladosporin inhibits lysyl-tRNA synthetase (PfKRS1). Here, we report the identification of a series of selective inhibitors of apicomplexan KRSs. Following a biochemical screen, a small-molecule hit was identified and then optimized by using a structure-based approach, supported by structures of both PfKRS1 and C. parvum KRS (CpKRS). In vivo proof of concept was established in an SCID mouse model of malaria, after oral administration (ED90 = 1.5 mg/kg, once a day for 4 d). Furthermore, we successfully identified an opportunity for pathogen hopping based on the structural homology between PfKRS1 and CpKRS. This series of compounds inhibit CpKRS and C. parvum and Cryptosporidium hominis in culture, and our lead compound shows oral efficacy in two cryptosporidiosis mouse models. X-ray crystallography and molecular dynamics simulations have provided a model to rationalize the selectivity of our compounds for PfKRS1 and CpKRS vs. (human) HsKRS. Our work validates apicomplexan KRSs as promising targets for the development of drugs for malaria and cryptosporidiosis.
AU  - Baragaña,B
AU  - Forte,B
AU  - Choi,R
AU  - Nakazawa,Hewitt S
AU  - Bueren-Calabuig,JA
AU  - Pisco,JP
AU  - Peet,C
AU  - Dranow,DM
AU  - Robinson,DA
AU  - Jansen,C
AU  - Norcross,NR
AU  - Vinayak,S
AU  - Anderson,M
AU  - Brooks,CF
AU  - Cooper,CA
AU  - Damerow,S
AU  - Delves,M
AU  - Dowers,K
AU  - Duffy,J
AU  - Edwards,TE
AU  - Hallyburton,I
AU  - Horst,BG
AU  - Hulverson,MA
AU  - Ferguson,L
AU  - Jiménez-Díaz,MB
AU  - Jumani,RS
AU  - Lorimer,DD
AU  - Love,MS
AU  - Maher,S
AU  - Matthews,H
AU  - McNamara,CW
AU  - Miller,P
AU  - O'Neill,S
AU  - Ojo,KK
AU  - Osuna-Cabello,M
AU  - Pinto,E
AU  - Post,J
AU  - Riley,J
AU  - Rottmann,M
AU  - Sanz,LM
AU  - Scullion,P
AU  - Sharma,A
AU  - Shepherd,SM
AU  - Shishikura,Y
AU  - Simeons,FRC
AU  - Stebbins,EE
AU  - Stojanovski,L
AU  - Straschil,U
AU  - Tamaki,FK
AU  - Tamjar,J
AU  - Torrie,LS
AU  - Vantaux,A
AU  - Witkowski,B
AU  - Wittlin,S
AU  - Yogavel,M
AU  - Zuccotto,F
AU  - Angulo-Barturen,I
AU  - Sinden,R
AU  - Baum,J
AU  - Gamo,F-J
AU  - Mäser,P
AU  - Kyle,DE
AU  - Winzeler,EA
AU  - Myler,PJ
AU  - Wyatt,PG
AU  - Floyd,D
AU  - Matthews,D
AU  - Sharma,A
AU  - Striepen,B
AU  - Huston,CD
AU  - Gray,DW
AU  - Fairlamb,AH
AU  - Pisliakov,AV
AU  - Walpole,C
AU  - Read,KD
AU  - Van,Voorhis WC
AU  - Gilbert,IH
DO  - 10.1073/pnas.1814685116
PY  - 2019///
TI  - Lysyl-tRNA synthetase as a drug target in malaria and cryptosporidiosis.
T2  - Proc Natl Acad Sci U S A
UR  - http://dx.doi.org/10.1073/pnas.1814685116
UR  - https://www.ncbi.nlm.nih.gov/pubmed/30894487
ER  -
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