Contributions of TolC Orthologs to Francisella tularensis Schu S4 Multidrug Resistance, Modulation of Host Cell Responses, and Virulence

EJ Kopping, CR Doyle, V Sampath… - Infection and …, 2019 - Am Soc Microbiol
… of Schu S4 to modulate host cell death during infection, we … S4 delays macrophage death
in a TolC-dependent manner. … the TolC-dependent delay in host cell death is required for F. …

Francisella tularensis disrupts TLR2-MYD88-p38 signaling early during infection to delay apoptosis of macrophages and promote virulence in the host

PT Benziger, EJ Kopping, PA McLaughlin… - Mbio, 2023 - Am Soc Microbiol
tularensis delays host cell death until late time points (~24 h pi), at a stage where the … Our
results suggest that TolC-dependent activity counteracts early TLR2-MYD88 signaling, while …

Characterization of a unique outer membrane protein required for oxidative stress resistance and virulence of Francisella tularensis

M Alqahtani, Z Ma, H Ketkar, RV Suresh… - Journal of …, 2018 - Am Soc Microbiol
tularensis SchuS4 is only partially attenuated for virulence in mice. TolC is also required
for … , and apoptotic cell death (20, 21). However, the induction of apoptosis in neutrophils is …

Pathogenicity and virulence of Francisella tularensis

M Degabriel, S Valeva, S Boisset, T Henry - Virulence, 2023 - Taylor & Francis
cell death might trap bacteria inside host cell remnants, leading to their elimination by
efferocytosis (removal of dead cells… in Francisella genomes, including the TolC-dependent efflux …

Temporal manipulation of mitochondrial function by virulent Francisella tularensis to limit inflammation and control cell death

F Jessop, B Schwarz, E Heitmann, R Buntyn… - Infection and …, 2018 - Am Soc Microbiol
… other forms of cell death observed with attenuated strains. For … in cells infected with attenuated
strains of Francisella, we … However, in contrast to the findings for SchuS4-infected cells

Bacterial lipoproteins and other factors released by Francisella tularensis modulate human neutrophil lifespan: Effects of a TLR1 SNP on apoptosis inhibition

LC Kinkead, LC Whitmore, JM McCracken… - Cellular …, 2018 - Wiley Online Library
… regulatory factors or TolC-dependent secretion. … envelope is unusual, it is also of interest
that BLPs of other bacteria enhance rather than impair host cell death. For example, a 19-kDa …

Complement C3 as a prompt for human macrophage death during infection with Francisella tularensis strain SCHU S4

SR Brock, MJ Parmely - Infection and Immunity, 2017 - Am Soc Microbiol
… Specifically, we wished to determine whether opsonization of strain SCHU S4 with
complement influenced cell death induction in infected primary human monocyte-derived …

[HTML][HTML] Necroptotic debris including damaged mitochondria elicits sepsis-like syndrome during late-phase tularemia

A Singh, S Periasamy, M Malik, CS Bakshi… - Cell Death …, 2017 - nature.com
Francisella tularensis subspecies tularensis (Ft), a … of tularemia, an acute and sometimes
fatal disease. A consequence of infection of host cells by Ft is the induction of host cell death (…

Increased resistance to intradermal Francisella tularensis LVS infection by inactivation of the Sts phosphatases

K Parashar, E Kopping, D Frank, V Sampath… - Infection and …, 2017 - Am Soc Microbiol
… The DNA-sensing inflammasome component AIM2 has been identified as a critical mediator
of inflammasome activation and cell death (16, 17). Interestingly, it has recently been shown …

Francisella Inflammasomes: Integrated Responses to a Cytosolic Stealth Bacterium

P Wallet, B Lagrange, T Henry - Inflammasome Signaling and Bacterial …, 2016 - Springer
… , Francisella novicida and Francisella tularensis live vaccine strain lyse in the host cytosol …
caspase-1 processing and cell death are fully deficient in the latter cells. The same phenotype …