TY  - JOUR
A1  - Dandekar, Thomas
A1  - Fieselmann, Astrid
A1  - Fischer, Eva
A1  - Popp, Jasmin
A1  - Hensel, Michael
A1  - Noster, Janina
T1  - Salmonella - how a metabolic generalist adopts an intracellular lifestyle during infection
JF  - Frontiers in Cellular and Infection Microbiology
N2  - The human-pathogenic bacterium Salmonella enterica adjusts and adapts to different environments while attempting colonization. In the course of infection nutrient availabilities change drastically. New techniques, "-omics" data and subsequent integration by systems biology improve our understanding of these changes. We review changes in metabolism focusing on amino acid and carbohydrate metabolism. Furthermore, the adaptation process is associated with the activation of genes of the Salmonella pathogenicity islands (SPIs). Anti-infective strategies have to take these insights into account and include metabolic and other strategies. Salmonella infections will remain a challenge for infection biology.
KW  - enterica serovar Typhimurium
KW  - bacterial invasion
KW  - mouse model
KW  - defenses
KW  - regulation
KW  - "-omics"
KW  - virulence
KW  - Salmonella-containing vacuole (SCV)
KW  - metabolism
KW  - nitric oxide
Y1  - 2015
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-149029
VL  - 4
IS  - 191
ER  - 
TY  - JOUR
A1  - Herweg, Jo-Ana
A1  - Hansmeier, Nicole
A1  - Otto, Andreas
A1  - Geffken, Anna C.
A1  - Subbarayal, Prema
A1  - Prusty, Bhupesh K.
A1  - Becher, Dörte
A1  - Hensel, Michael
A1  - Schaible, Ulrich E.
A1  - Rudel, Thomas
A1  - Hilbi, Hubert
T1  - Purification and proteomics of pathogen-modified vacuoles and membranes
JF  - Frontiers in Cellular and Infection Microbiology
N2  - Certain pathogenic bacteria adopt an intracellular lifestyle and proliferate in eukaryotic host cells. The intracellular niche protects the bacteria from cellular and humoral components of the mammalian immune system, and at the same time, allows the bacteria to gain access to otherwise restricted nutrient sources. Yet, intracellular protection and access to nutrients comes with a price, i.e., the bacteria need to overcome cell-autonomous defense mechanisms, such as the bactericidal endocytic pathway. While a few bacteria rupture the early phagosome and escape into the host cytoplasm, most intracellular pathogens form a distinct, degradation-resistant and replication-permissive membranous compartment. Intracellular bacteria that form unique pathogen vacuoles include Legionella, Mycobacterium, Chlamydia, Simkania, and Salmonella species. In order to understand the formation of these pathogen niches on a global scale and in a comprehensive and quantitative manner, an inventory of compartment-associated host factors is required. To this end, the intact pathogen compartments need to be isolated, purified and biochemically characterized. Here, we review recent progress on the isolation and purification of pathogen-modified vacuoles and membranes, as well as their proteomic characterization by mass spectrometry and different validation approaches. These studies provide the basis for further investigations on the specific mechanisms of pathogen-driven compartment formation.
KW  - spectrometry-based proteomics
KW  - Mycobacterium tuberculosis
KW  - Chlamydia
KW  - Salmonella
KW  - bacterium Legionella pneumophila
KW  - endocytic multivesicular bodies
KW  - phagosome maturation arrest
KW  - III secretion system
KW  - endoplasmic reticulum
KW  - Chlamydia trachomatis
KW  - Simkania negevensis
KW  - intracellular bacteria
KW  - host pathogen interactions
KW  - immuno-magnetic purification
KW  - Legionella
KW  - Mycobacterium
KW  - Simkania
KW  - pathogen vacuole
Y1  - 2015
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-151823
VL  - 5
IS  - 48
ER  -