Transcriptomics

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AC2P20 selectively kills M. tuberculosis at acidic pH by depleting free thiols


ABSTRACT: In this study, AC2P20 was prioritized for continued study to test the hypothesis that it was targeting Mtb pathways associated with pH-driven adaptation. RNAseq transcriptional profiling studies showed AC2P20 modulates expression of genes associated with redox-homeostasis. Gene enrichment analysis revealed that the AC2P20 transcriptional profile had significant overlap with a previously characterized pH-selective inhibitor, AC2P36. Like AC2P36, we show that AC2P20 kills Mtb by selectively depleting free thiols at acidic pH. Mass spectrometry studies show the formation of a disulfide bond between AC2P20 and reduced glutathione, supporting a mechanism where AC2P20 is able to deplete intracellular thiols and dysregulate redox homeostasis.

ORGANISM(S): Mycobacterium tuberculosis CDC1551

PROVIDER: GSE151884 | GEO | 2021/07/02

REPOSITORIES: GEO

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