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2017 ; 215
(5
): 813-817
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Infection-Induced Vascular Permeability Aids Mycobacterial Growth
#MMPMID27496976
Oehlers SH
; Cronan MR
; Beerman RW
; Johnson MG
; Huang J
; Kontos CD
; Stout JE
; Tobin DM
J Infect Dis
2017[Mar]; 215
(5
): 813-817
PMID27496976
show ga
Pathogenic mycobacteria trigger formation of organized granulomas. As granulomas
mature, they induce angiogenesis and vascular permeability. Here, in a striking
parallel to tumor pro-angiogenic signaling, we identify angiopoietin-2 (ANG-2)
induction as an important component of vascular dysfunction during mycobacterial
infection. Mycobacterial infection in humans and zebrafish results in robust
induction of ANG-2 expression from macrophages and stromal cells. Using a
small-molecule inhibitor closely related to one currently in clinical trials, we
link ANG-2/TIE2 signaling to vascular permeability during mycobacterial
infection. Targeting granuloma-induced vascular permeability via vascular
endothelial-protein tyrosine phosphatase inhibition limits mycobacterial growth,
suggesting a new strategy for host-directed therapies against tuberculosis.
|*Capillary Permeability
[MESH]
|Angiopoietin-2/genetics/*metabolism
[MESH]
|Animals
[MESH]
|Animals, Genetically Modified
[MESH]
|Disease Models, Animal
[MESH]
|Gene Expression Regulation
[MESH]
|Granuloma/microbiology
[MESH]
|Host-Pathogen Interactions
[MESH]
|Humans
[MESH]
|Larva
[MESH]
|Macrophages/drug effects/microbiology
[MESH]
|Mycobacterium Infections/*pathology
[MESH]
|Mycobacterium/drug effects/*growth & development
[MESH]