2003
DOI: 10.1073/pnas.2436197100
|View full text |Cite
|
Sign up to set email alerts
|

Differential expression of iron-, carbon-, and oxygen-responsive mycobacterial genes in the lungs of chronically infected mice and tuberculosis patients

Abstract: Pathogenetic processes that facilitate the entry, replication, and persistence of Mycobacterium tuberculosis (MTB) in the mammalian host likely include the regulated expression of specific sets of genes at different stages of infection. Identification of genes that are differentially expressed in vivo would provide insights into host-pathogen interactions in tuberculosis (TB); this approach might be particularly valuable for the study of human TB, where experimental opportunities are limited. In this study, th… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1

Citation Types

16
220
2

Year Published

2004
2004
2023
2023

Publication Types

Select...
6
4

Relationship

1
9

Authors

Journals

citations
Cited by 251 publications
(241 citation statements)
references
References 48 publications
16
220
2
Order By: Relevance
“…Using qRT-PCR, we monitored the expression of eight genes functionally characterized or annotated for their role in, or response to, oxidative and non-oxidative stresses in Mtb 20,21 . These included five genes specifically associated with protection against ROIs and reactive nitrogen intermediates (RNIs): furA, katG, trxB1, ahpC and ahpD; and three control genes associated with other stress responses including the dormancy transcriptional regulator dosR, as well as mbtB and hspX, which are induced in response to hypoxia, iron starvation and protein damage [22][23][24] . Treatment of wild-type Erdman Mtb with isoniazid or STREP resulted in induction of genes that can report exposure to ROI or RNI, including an eightfold increase in levels of furA, and three-to fourfold increases in levels of katG, trxB1, ahpC and ahpD.…”
Section: Resultsmentioning
confidence: 99%
“…Using qRT-PCR, we monitored the expression of eight genes functionally characterized or annotated for their role in, or response to, oxidative and non-oxidative stresses in Mtb 20,21 . These included five genes specifically associated with protection against ROIs and reactive nitrogen intermediates (RNIs): furA, katG, trxB1, ahpC and ahpD; and three control genes associated with other stress responses including the dormancy transcriptional regulator dosR, as well as mbtB and hspX, which are induced in response to hypoxia, iron starvation and protein damage [22][23][24] . Treatment of wild-type Erdman Mtb with isoniazid or STREP resulted in induction of genes that can report exposure to ROI or RNI, including an eightfold increase in levels of furA, and three-to fourfold increases in levels of katG, trxB1, ahpC and ahpD.…”
Section: Resultsmentioning
confidence: 99%
“…Ten proteins (Ϸ50% of the S-nitroso proteins involved in intermediary or lipid metabolism) are involved in pathways important for the virulence and͞or persistence of Mtb: mycolic acid synthesis (mycocerosic acid synthase, polyketide synthase 13, and fatty acyl-AMP ligase), gluconeogenesis (phosphoenolpyruvate carboxykinase and malate synthase), branched chain amino acid synthesis (acetohydroxyacid synthase), nitrogen assimilation (asparagine synthase, glutamine synthetase, and glutamate synthase), and iron metabolism (mycobacterial ortholog of bacterioferritin) (35)(36)(37)(38)(39)(40)(41).…”
Section: Resultsmentioning
confidence: 99%
“…Besides hsp and htpX, which have been mentioned before, several other chaperone-encoding genes were induced by 10X-MIC vancomycin, suggesting that high concentrations of this drug promote protein misfolding or aggregation, probably due to growth arrest. hspX (a paralogue of hsp, referred to as acr1) encodes a protein belonging to the a-crystallin family of molecular chaperones, which is associated with in vivo growth and persistence (Timm et al, 2003) and with microaerophilic conditions (Desjardin et al, 2001). hspX has been proposed to play an active role in slowing the growth of M. tuberculosis in vivo immediately following infection.…”
Section: Genes Induced After Exposure To 10x-mic Vancomycinmentioning
confidence: 99%