Abstract:
:Stable isotope-mass spectrometry (MS)-based metabolomic profiling is a powerful technique for following changes in specific metabolite pool sizes and metabolic flux under various experimental conditions in a test organism or cell type. Here, we use a metabolomics approach to interrogate the mechanism of antibiotic action of d-cycloserine (DCS), a second line antibiotic used in the treatment of multidrug resistant Mycobacterium tuberculosis infections. We use doubly labeled 13C α-carbon-2H l-alanine to allow tracking of both alanine racemase and d-alanine:d-alanine ligase activity in M. tuberculosis challenged with DCS and reveal that d-alanine:d-alanine ligase is more strongly inhibited than alanine racemase at equivalent DCS concentrations. We also shed light on mechanisms surrounding d-Ala-mediated antagonism of DCS growth inhibition and provide evidence for a postantibiotic effect for this drug. Our results illustrate the potential of metabolomics in cellular drug-target engagement studies and consequently have broad implications in future drug development and target validation ventures.
journal_name
ACS Med Chem Lettjournal_title
ACS medicinal chemistry lettersauthors
Prosser GA,de Carvalho LPdoi
10.1021/ml400349nsubject
Has Abstractpub_date
2013-12-12 00:00:00pages
1233-1237issue
12issn
1948-5875journal_volume
4pub_type
杂志文章abstract::Inhibition of phosphoinositide 3-kinase (PI3K) signaling is an appealing approach to treat brain tumors, especially glioblastoma multiforme (GBM). We previously disclosed our successful approach to prospectively design potent and blood-brain barrier (BBB) penetrating PI3K inhibitors. The previously disclosed molecules...
journal_title:ACS medicinal chemistry letters
pub_type: 杂志文章
doi:10.1021/acsmedchemlett.6b00005
更新日期:2016-02-16 00:00:00
abstract::Inhibition of Itk potentially constitutes a novel, nonsteroidal treatment for asthma and other T-cell mediated diseases. In-house kinase cross-screening resulted in the identification of an aminopyrazole-based series of Itk inhibitors. Initial work on this series highlighted selectivity issues with several other kinas...
journal_title:ACS medicinal chemistry letters
pub_type: 杂志文章
doi:10.1021/ml400206q
更新日期:2013-08-12 00:00:00
abstract::A series of 3-deoxy-3-N-arylated-β-d-galactoside and -guloside derivatives have been synthesized by cesium fluoride/trimetylsilylaryl triflate-mediated benzyne generation and N-arylation of 3-deoxy-3-amino-β-d-galactosides and -gulosides, respectively. Evaluation as ligands to galectin-1, 2, 3, 4N (N-terminal domain),...
journal_title:ACS medicinal chemistry letters
pub_type: 杂志文章
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journal_title:ACS medicinal chemistry letters
pub_type: 杂志文章
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更新日期:2013-09-05 00:00:00
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journal_title:ACS medicinal chemistry letters
pub_type: 杂志文章
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journal_title:ACS medicinal chemistry letters
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journal_title:ACS medicinal chemistry letters
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journal_title:ACS medicinal chemistry letters
pub_type: 杂志文章
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abstract::We have employed novel fragment-based screening methodology to discover bivalent kinase inhibitors with improved selectivity. Starting from a low molecular weight promiscuous kinase inhibitor, we appended a thiol for subsequent reaction with a library of acrylamide electrophiles. Enzyme-templated screening was perform...
journal_title:ACS medicinal chemistry letters
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journal_title:ACS medicinal chemistry letters
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journal_title:ACS medicinal chemistry letters
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journal_title:ACS medicinal chemistry letters
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pub_type: 杂志文章
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abstract::Inhibitors of the renal outer medullary potassium channel (ROMK) show promise as novel mechanism diuretics, with potentially lower risk of diuretic-induced hypokalemia relative to current thiazide and loop diuretics. Here, we report the identification of a novel series of 3-sulfamoylbenzamide ROMK inhibitors. Starting...
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journal_title:ACS medicinal chemistry letters
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journal_title:ACS medicinal chemistry letters
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journal_title:ACS medicinal chemistry letters
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abstract::A focused multiply N-methylated library of a cyclic hexapeptidic somatostatin analogue: MK678 cyclo(-MeAYwKVF-) was generated, which resulted in the unexpected observation of an efficacious tetra-N-methylated analogue, cyclo(-MeAYMewMeKVMeF-) with a potent inhibitory action on sensory neuropeptide release in vitro and...
journal_title:ACS medicinal chemistry letters
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abstract::A novel series of quinazolinone T-type calcium channel antagonists have been prepared and evaluated using in vitro and in vivo assays. Optimization of the screening hit 3 by modifications of the 3- and 4-positions of the quinazolinone ring afforded potent and selective antagonists that displayed in vivo central nervou...
journal_title:ACS medicinal chemistry letters
pub_type: 杂志文章
doi:10.1021/ml100004r
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journal_title:ACS medicinal chemistry letters
pub_type: 杂志文章
doi:10.1021/acsmedchemlett.0c00436
更新日期:2020-09-21 00:00:00
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journal_title:ACS medicinal chemistry letters
pub_type: 杂志文章
doi:10.1021/acsmedchemlett.7b00343
更新日期:2018-01-04 00:00:00
abstract::Primary open angle glaucoma is the second most common cause of blindness worldwide. Nitric oxide has recently received particular attention as a potential antiglaucoma agent. In this work, gem-dinitroalkyl benzenes are evaluated for their capability to act as a new class of IOP lowering agents. These derivatives have ...
journal_title:ACS medicinal chemistry letters
pub_type: 杂志文章
doi:10.1021/acsmedchemlett.7b00264
更新日期:2017-09-13 00:00:00
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journal_title:ACS medicinal chemistry letters
pub_type: 杂志文章
doi:10.1021/acsmedchemlett.7b00386
更新日期:2017-11-13 00:00:00
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journal_title:ACS medicinal chemistry letters
pub_type: 杂志文章
doi:10.1021/acsmedchemlett.8b00429
更新日期:2018-11-29 00:00:00
abstract::A new series of 1,4-naphthoquinones, bearing various cyclic and aliphatic amines on C2, was designed and synthesized to identify antiproliferative agents for triple-negative breast cancer, which represents a clinical challenge without targeted therapies. Among naphthoquinones, 2a and 3a inhibited the proliferation of ...
journal_title:ACS medicinal chemistry letters
pub_type: 杂志文章
doi:10.1021/acsmedchemlett.8b00333
更新日期:2019-02-15 00:00:00