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1 L. monocytogenes 100S ribosomes were observed by sucrose
2 L. monocytogenes lacking the gene hmgR, encoding the rat
3 L. monocytogenes secA2 mutants form rough colonies, have
4 L. monocytogenes strains that lack both prsA2 and htrA e
5 L. monocytogenes survived in calyxes and stem ends of ap
6 L. monocytogenes was recovered in a dose-dependent manne
9 of the PrfA regulon and complementation of a L. monocytogenes mutant lacking all PrfA-regulated genes
11 a generalizable mechanism by finding that a L. monocytogenes strain engineered to express a flavinyl
13 n the interaction of extracellular, adherent L. monocytogenes with the unique subsets of myeloid-deri
14 h during early phagosome formation and after L. monocytogenes escaped the original containment vacuol
16 tical role for C5aR1 in host defense against L. monocytogenes through the suppression of type 1 IFN e
17 n to be important for early defenses against L. monocytogenes in the spleen, as well as a decrease in
18 otential or a decrease in protection against L. monocytogenes Instead, ecSOD activity enhances the pr
22 sion of the cell surface protein ActA allows L. monocytogenes to activate host actin regulatory facto
23 orm of intercellular trafficking that allows L. monocytogenes to move between host cells without esca
29 ype 6 had agreements of 95.7% and 85.7%, and L. monocytogenes and N. meningitidis were not observed i
30 educed the population of E. coli O157:H7 and L. monocytogenes by 1.48 and 0.47 log cfu/ml respectivel
31 oemulsion (AO75) reduced E. coli O157:H7 and L. monocytogenes count by 2.51 and 1.64 log cfu/ml, resp
32 onocytogenes DeltaactA DeltainlB (LmII), and L. monocytogenes DeltaactA DeltainlB prfA* (LmIII), we c
35 P depletion suggest that P2X5-dependent anti-L. monocytogenes immunity is independent of the ATP-P2X7
36 ow that the vast majority of cell-associated L. monocytogenes in the gut were adhered to Ly6C(hi) mon
39 study showed that avoidance of autophagy by L. monocytogenes primarily involves PlcA and ActA and th
40 iota and promotes intestinal colonization by L. monocytogenes, as well as deeper organ infection.
42 as not observed in the protrusions formed by L. monocytogenes, whose dissemination did not rely on PI
43 es to the Rab32 subnetwork in DCs induced by L. monocytogenes infection and uncovered an essential ro
44 determinants that contribute to infection by L. monocytogenes, the causative agent of the foodborne d
45 be useful in the fight against infections by L. monocytogenes and other bacteria that use similar str
46 d associate modulation of host microbiota by L. monocytogenes epidemic strains to increased virulence
48 tributes to efficient cell-to-cell spread by L. monocytogenes in macrophages in vitro and growth of t
49 ds to 1) promotion of cell-to-cell spread by L. monocytogenes, 2) defective leukocyte recruitment to
53 ified among a collection of 57,820 confirmed L. monocytogenes strains isolated from a variety of sour
54 A case was defined as laboratory-confirmed L. monocytogenes infection during the period from June 1
56 ion, we show that Ag delivery by cytoplasmic L. monocytogenes causes selective loss of 2W1S(+) offspr
57 inks E-cadherin to F-actin, did not decrease L. monocytogenes invasion of epithelial cells in tissue
58 n and IL-1beta production and that defective L. monocytogenes killing in P2X5-deficient BMMs is subst
59 ing and cytosolic survival of DHNA-deficient L. monocytogenes RNA-seq transcriptome analysis revealed
60 found that lipoate protein ligase-deficient L. monocytogenes (DeltalplA1) mutants, which display imp
61 ealing, revealing that perforation-dependent L. monocytogenes endocytosis is distinct from the reseal
63 the mechanism for IFNbeta expression during L. monocytogenes infection in human myeloid cells remain
64 and C5a modulate IFN-beta expression during L. monocytogenes infection were not examined in these in
65 arizes the requirement of neutrophils during L. monocytogenes infection by examining both neutrophil
66 ng; however, disrupting IFN signaling during L. monocytogenes-induced enterocolitis did not recapitul
69 dborne infection of mice with GFP-expressing L. monocytogenes, a small percentage of CD103(neg) and C
70 EGDe) and mouse-adapted (InlA(m)-expressing) L. monocytogenes recovered from the mesenteric lymph nod
72 ance of the innate immune system in fighting L. monocytogenes infection, little is known about the ro
78 mum conditions, limit of detection (LOD) for L. monocytogenes reached as low as 3.5x10(1)CFUmL(-1) in
83 We further showed that P2X5 is required for L. monocytogenes-induced inflammasome activation and IL-
84 sults indicate that the only requirement for L. monocytogenes invasion of epithelial cells is adhesio
85 teria, PrsA2 exhibits unique specificity for L. monocytogenes target proteins required for pathogenes
86 re we report crystal structures of CdaA from L. monocytogenes in the apo state, in the post-catalytic
89 e previously infected with a relatively high L. monocytogenes dose displayed highly similar Ag-specif
92 stitutively virulent state strongly impaired L. monocytogenes performance in soil, the natural habita
95 that GpsB, PBP A1 and PgdA form a complex in L. monocytogenes and identified the regions in PBP A1 an
96 enes CdaA is the sole diadenylate cyclase in L. monocytogenes, making this enzyme an attractive targe
97 fy LLS as the first bacteriocin described in L. monocytogenes and associate modulation of host microb
98 fatty acid incorporation was not detected in L. monocytogenes unless the pathway was partially inacti
101 equency, PrfA(-)/LLO(-) mutational events in L. monocytogenes lead to niche restriction and open an e
103 t whether this same mechanism is involved in L. monocytogenes, or even whether similar ion channels w
104 ontaneous virulence-attenuating mutations in L. monocytogenes Sixty nonhemolytic isolates were identi
106 ntified a novel transcriptional regulator in L. monocytogenes and determined that its metabolic regul
108 in-associated virulence and organ tropism in L. monocytogenes isolates from well-defined ruminant cas
110 for normal cell morphology and virulence in L. monocytogenes; however, the mechanism of export via t
111 clearance of pathogenic organisms, including L. monocytogenes The diverse roles of neutrophils during
112 es infection was largely caused by increased L. monocytogenes-induced apoptosis of myeloid and lympho
115 steriolysin O (LLO), is sufficient to induce L. monocytogenes internalization into human epithelial c
117 asma membrane resealing process, LLO-induced L. monocytogenes internalization requires both Ca2+ and
118 try with a high prevalence of HIV infection, L. monocytogenes caused disproportionate illness among p
119 a cell type that inefficiently internalized L. monocytogenes With bone marrow-derived in vitro cultu
120 r, but the small proportion of intracellular L. monocytogenes is essential for dissemination to the M
121 t cell lamellipodin (Lpd) with intracellular L. monocytogenes detectable 6 h postinfection of epithel
122 on protein internalin A (InlA) are involved, L. monocytogenes can cross the gut barrier in their abse
125 of storage, significantly (p < 0.05) larger L. monocytogenes populations were recovered from apples
126 sponse to different types of systemic (LCMV, L. monocytogenes) and/or localized (influenza virus) inf
127 espite the established role of NOX2 limiting L. monocytogenes infection in mice, the underlying mecha
128 visualize intracellular cdiA levels in live L. monocytogenes strains and to determine the catalytic
130 s vectors, L. monocytogenes DeltaactA (LmI), L. monocytogenes DeltaactA DeltainlB (LmII), and L. mono
131 m perforation and contributes to maintaining L. monocytogenes in a bactericidal phagosome from which
132 findings are consistent with the ability of L. monocytogenes to switch between terminal oxidases und
134 portance of considering clonal background of L. monocytogenes isolates in surveillance, epidemiologic
135 In addition, significantly lower burdens of L. monocytogenes were recovered from the colon, spleen,
136 longed to phylogenetically diverse clades of L. monocytogenes, and most were identified among nonclin
137 Finally, CCL8-mediated enhanced clearance of L. monocytogenes was dependent on gamma/delta T cells.
138 the presence of ecSOD decreases clearance of L. monocytogenes while increasing the recruitment of neu
139 that are required for ultimate clearance of L. monocytogenes, including neutrophils, macrophages, de
142 invaded organs and higher concentrations of L. monocytogenes in almost all organs than nonpregnant a
143 ion of any host cell death in the context of L. monocytogenes infection inhibited the generation of p
148 cceeded in inactivating over 5 log cycles of L. monocytogenes and maximizing inactivation of PPO and
149 tance are highly upregulated determinants of L. monocytogenes pathogenesis that are required for avoi
150 viously infected with a relative low dose of L. monocytogenes CD44(hi)CD4(+) T cells from I-A(100%) a
151 animals, however, can tolerate high doses of L. monocytogenes without developing systemic disease.
153 tablished that the major virulence factor of L. monocytogenes, the pore-forming toxin listeriolysin O
154 are not a niche for intracellular growth of L. monocytogenes during intestinal infection of mice.
155 -CSF readily supported exponential growth of L. monocytogenes Flt3 ligand-induced cultures yielded CD
156 ages fully supported intracellular growth of L. monocytogenes In contrast, inflammatory monocytes tha
157 cient to support the intracellular growth of L. monocytogenes Our results show that FabI is the prima
158 phagy was required to restrict the growth of L. monocytogenes, an intracellular pathogen that damages
159 vation prevented the intracellular growth of L. monocytogenes, showing that neither FabK nor the inco
162 ts achieved higher levels of inactivation of L. monocytogenes and of the oxidative enzymes, succeedin
164 BMMs) exhibit defective cytosolic killing of L. monocytogenes We further showed that P2X5 is required
166 that NMHC-IIA limits intracellular levels of L. monocytogenes, and this is dependent on the phosphory
167 ing differences between the four lineages of L. monocytogenes we have detected differences in the rec
168 c-di-AMP), a secondary messenger molecule of L. monocytogenes, in J774A.1 macrophage-like cells and i
169 Lpd resulted in an increase in the number of L. monocytogenes-containing protrusions (listeriopods).
170 ified the LLO-dependent endocytic pathway of L. monocytogenes and support a novel model for pathogen
171 choline-specific phospholipase C (PC-PLC) of L. monocytogenes, is a potent inhibitor of intra- and ex
173 emic infection, the massive proliferation of L. monocytogenes in Perforin-2(-/-)mice leads to a rapid
175 malian infection; however, the proportion of L. monocytogenes that is intracellular in vivo has not b
177 mplications for innate immune recognition of L. monocytogenes in the gut and highlight the need for a
178 not the result of an enhanced recruitment of L. monocytogenes to the gestational uterus but rather is
179 ssential for control of early replication of L. monocytogenes in the intestine as well as for restric
180 stigate whether intracellular replication of L. monocytogenes was essential during the intestinal pha
182 that GpsB influences lysozyme resistance of L. monocytogenes as mutant strains lacking gpsB showed a
183 myeloid cells specifically near the sites of L. monocytogenes replication within the MLN to restrict
184 ial for dissemination and systemic spread of L. monocytogenes In this article, we show that the vast
190 ria monocytogenes Using a modified strain of L. monocytogenes that mimics human gastrointestinal list
191 ddress this question, we designed strains of L. monocytogenes that robustly activate necrosis, apopto
193 esis, is essential for cytosolic survival of L. monocytogenes independent from its role in respiratio
194 g with wax facilitates prolonged survival of L. monocytogenes on whole apples is novel and reveals ga
198 counting for the more rapid translocation of L. monocytogenes to its replicative niche in the cytosol
199 compared i.v. and foodborne transmission of L. monocytogenes in mice lacking the common type I IFN r
202 tractant leukotriene B4, decreased uptake of L. monocytogenes by PMN, and inhibited the respiratory b
203 use of opsonized bacteria enhanced uptake of L. monocytogenes in CD64(-) monocytes, but very few bact
204 r functional complementation of a variety of L. monocytogenes PrsA2-associated phenotypes central to
205 also affected the intracellular velocity of L. monocytogenes, with a reduction in Lpd corresponding
206 tial for cytosolic survival and virulence of L. monocytogenes Furthermore, we have identified a novel
207 icroscopy revealed that deposition of LC3 on L. monocytogenes-containing vacuoles via noncanonical au
208 PgdA and OatA, confer lysozyme resistance on L. monocytogenes; however, these enzymes are also conser
215 improve the chances of creating a persistent L. monocytogenes infection in an actively extruding epit
216 se, are less capable of killing phagocytosed L. monocytogenes, and have decreased oxidative burst.
217 h a RavZ-deficient strain of L. pneumophila, L. monocytogenes was targeted by the host xenophagy syst
219 rane sculpting F-BAR protein PACSIN2 promote L. monocytogenes protrusion engulfment during spread, an
221 ve identified and characterized the putative L. monocytogenes' potassium transporters KimA, KtrCD, an
222 pecific CD8(+) T cells primed by recombinant L. monocytogenes is associated with reductions in circul
224 ribe a new vaccine platform, termed Lm-RIID (L. monocytogenes recombinase-induced intracellular death
225 t evolutionarily distinct bacterial species, L. monocytogenes and Shigella flexneri, exploit the acce
230 ized clusters with myeloid cells surrounding L. monocytogenes replication foci only after a secondary
231 ticle, we report that NOX2 controls systemic L. monocytogenes spread through modulation of the type I
235 and statistical modeling to demonstrate that L. monocytogenes cell-to-cell spread proceeds anisotropi
238 ntial for aerobic growth, demonstrating that L. monocytogenes SpxA1 likely regulates a distinct set o
241 uman primate LD50s, but the observation that L. monocytogenes-induced stillbirths can be seen in guin
252 are highly conserved in Firmicutes, and the L. monocytogenes genome contains two paralogues, spxA1 a
253 these data indicate that the majority of the L. monocytogenes burden in the gastrointestinal tract is
254 e present the first crystal structure of the L. monocytogenes CdaA diadenylate cyclase domain that is
255 idates expressing r30 linked in frame to the L. monocytogenes listeriolysin O signal sequence and dri
260 genes PrsA2-associated phenotypes central to L. monocytogenes pathogenesis and bacterial cell physiol
261 gnancy outcomes in gerbils orally exposed to L. monocytogenes, to compare the dose-response data to t
262 ncreased susceptibility of C3aR(-/-) mice to L. monocytogenes infection was largely caused by increas
265 the bone marrow of BALB/c/By/J mice prior to L. monocytogenes exposure in the gut did not support L.
268 a signaling on the innate immune response to L. monocytogenes may be an artifact of the i.v. infectio
269 been reported to impede the host response to L. monocytogenes through the promotion of splenocyte dea
270 suppress IFN-beta production in response to L. monocytogenes via cyclic di-AMP (c-di-AMP), a seconda
271 known to be critical in the host response to L. monocytogenes, including IFN-gamma and TNF-alpha.
272 e normal monocyte recruitment in response to L. monocytogenes, P2X5-deficient bone marrow-derived mac
274 nsic role of Tim-3, we analyzed responses to L. monocytogenes infection by WT and Tim-3 KO TCR-transg
276 and C3aR(-/-) mice are highly susceptible to L. monocytogenes infection as a result of increased IFN-
277 cking the Ccl8 gene were more susceptible to L. monocytogenes infection than were wild-type mice.
278 rvation of the TA inhibitory activity toward L. monocytogenes, the possibility of being magnetically
281 ional modification event and show that, upon L. monocytogenes infection, Src phosphorylates NMHC-IIA
282 fective cell-mediated immune responses using L. monocytogenes-based immunotherapeutic platforms.
283 rotection against fetal wastage and in utero L. monocytogenes invasion was maintained even when CXCR3
284 g three attenuated L. monocytogenes vectors, L. monocytogenes DeltaactA (LmI), L. monocytogenes Delta
286 Finally, in vitro BMM killing and in vivo L. monocytogenes infection experiments employing either
287 neumophila infection of macrophages, whereas L. monocytogenes short-circuits this pathway by producin
289 equencing (IDAP-Seq) to identify genome-wide L. monocytogenes chromosomal DNA regions that CodY binds
290 nalysis of wild-type (WT) mice infected with L. monocytogenes revealed that Tim-3 was transiently exp
291 responses to gastrointestinal infection with L. monocytogenes and identify STAT4 as a central modulat
292 and IL-12p70 during in vitro infection with L. monocytogenes compared with splenocytes from C5aR2(+/
293 memory CD8 T-cells following infection with L. monocytogenes either expressing or not cognate Ag.
294 urvival roles during systemic infection with L. monocytogenes In our current study, we have examined
295 12 and IFN-gamma early during infection with L. monocytogenes is protective to the host, and we belie
297 in the first few minutes of interaction with L. monocytogenes, granules can fuse with the plasma memb
299 nd that, upon access to the host cytosol, WT L. monocytogenes utilized PLCs and ActA to avoid subsequ
300 t shortly after phagocytosis, wild-type (WT) L. monocytogenes escaped from a noncanonical autophagic