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Coupled Enzyme Activity and Thermal Shift Screening of the Maybridge Rule of 3 Fragment Library Against Trypanosoma brucei Choline Kinase; A Genetically Validated Drug Target (Book chapter)

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ISBN: 9789535109068 Year: DOI: 10.5772/52668 Language: English
Publisher: IntechOpen Grant: Wellcome Trust - 067441
Subject: Medicine (General)
Added to DOAB on : 2019-01-17 11:47:01
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Abstract

In this study we interrogate 630 compounds of the Maybridge Rule of 3 Fragment Library for compounds that interact with, and inhibit TbCK. The Maybridge Rule of 3 Fragment Library is a small collection of quantifiable diverse, pharmacophoric rich, chemical entities that comply with the following criteria; MW ≤ 300, cLogP ≤ 3, H-Bond Acceptors ≤ 3, H-Bond Donors ≤ 3, Rotatable bonds (Flexibility Index) ≤ 3, Polar Surface Area ≤ 60 Å2 and aqueous solubility ≥ 1 mM using LogS and high purity (≥ 95%). Comparisons between two different screening methods, a coupled enzyme activity assay and differential scanning fluorimetry, has allowed identification of compounds that interact and inhibit the T. brucei choline kinase, several of which possess selective trypanocidal activity. Screening of a comparatively small fragment library by two different screening methods has allowed identification of several compounds that interact with and inhibit TbCK, a genetically validated drug target against African sleeping sickness. Some of the inhibitory fragments were also selectively trypanocidal, considering these are relatively simple molecules with no optimization, finding low μΜ inhibitors is very encouraging. Moreover some of the morphological phenotypes of these trypanocidal compounds include cell-cycle arrests similar to those observed for the TbCK conditional knockout grown under permissive conditions.

Keywords

pharmacology --- toxicology

Making Medicines in Africa: The Political Economy of Industrializing for Local Health

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ISBN: 9781137571335 9781137546470 Year: Pages: 360 DOI: 10.1057/9781137546470 Language: English
Publisher: Palgrave Macmillan
Subject: Political Science --- Therapeutics
Added to DOAB on : 2015-12-16 18:20:38
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This book is open access under a CC-BY license. The importance of the pharmaceutical industry in Sub-Saharan Africa, its claim to policy priority, is rooted in the vast unmet health needs of the sub-continent. Making Medicines in Africa is a collective endeavour, by a group of contributors with a strong African and more broadly Southern presence, to find ways to link technological development, investment and industrial growth in pharmaceuticals to improve access to essential good quality medicines, as part of moving towards universal access to competent health care in Africa. The authors aim to shift the emphasis in international debate and initiatives towards sustained Africa-based and African-led initiatives to tackle this huge challenge. Without the technological, industrial, intellectual, organisational and research-related capabilities associated with competent pharmaceutical production, and without policies that pull the industrial sectors towards serving local health needs, the African sub-continent cannot generate the resources to tackle its populations' needs and demands.

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