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1 obligately intracellular bacterium Ehrlichia chaffeensis.
2 at D. melanogaster is a suitable host for E. chaffeensis.
3 is a tick-borne disease caused by Ehrlichia chaffeensis.
4 -specific expression of the T4S system in E. chaffeensis.
5 iable-length PCR target (VLPT) protein in E. chaffeensis.
6 the protein expression and interaction in E. chaffeensis.
7 -containing vacuoles than in vacuole-free E. chaffeensis.
8 nsis-containing vacuoles and vacuole-free E. chaffeensis.
9 ular basis of the host immune response to E. chaffeensis.
10 by a tick-transmitted rickettsia, Ehrlichia chaffeensis.
11 ost cell-specific antigenic expression by E. chaffeensis.
12 e disease caused by the rickettsia Ehrlichia chaffeensis.
13 was developed for the detection of Ehrlichia chaffeensis.
14 ared with previously described assays for E. chaffeensis.
15 ritical for conferring rapid clearance of E. chaffeensis.
16 d T-cell function on murine resistance to E. chaffeensis.
17 a major antigenic protein (P28) of Ehrlichia chaffeensis.
18 zoonoses caused by infection with Ehrlichia chaffeensis.
19 f both the IL-8 promoter and NF-kappaB by E. chaffeensis.
20 olysaccharide-deficient bacterium, Ehrlichia chaffeensis.
21 _0379 mutant and challenge with wild-type E. chaffeensis 1 month following inoculation with the mutan
22 spectrometry identified the protein as an E. chaffeensis 12.3-kDa hypothetical protein, which was des
23 l tandem repeat DNA-binding domain in the E. chaffeensis 120-kDa tandem repeat protein (TRP120) that
24 olymerase chain reaction (PCR) for Ehrlichia chaffeensis, 2) acute and convalescent serum titers, and
25 genes and that antigenic variation of the E. chaffeensis 28-kDa proteins may result from differential
26 Recently, molecular interactions between E. chaffeensis 47-kDa tandem repeat (TR) protein (TRP47) an
27 . canis and the corresponding ortholog of E. chaffeensis (47 kDa) were identified and the proteins ch
28 01 were positive by PCR assays for Ehrlichia chaffeensis (50 of 217; 23%), Ehrlichia ewingii (44 of 2
30 d a very high prevalence of antibodies to E. chaffeensis (97 of 112; 87%) and a low prevalence of ant
33 totropic ehrlichiosis is caused by Ehrlichia chaffeensis, a Gram-negative bacterium lacking lipopolys
41 ning, infectious disease caused by Ehrlichia chaffeensis, an obligate intracellular bacterium that la
42 d mutations by allelic exchange in Ehrlichia chaffeensis, an obligate intracellular tick-borne bacter
51 olymerase chain reaction assay for Ehrlichia chaffeensis and by the demonstration of morulae within p
55 e bond formation (Dsb) proteins of Ehrlichia chaffeensis and Ehrlichia canis were identified which re
56 e proteins have been identified in Ehrlichia chaffeensis and Ehrlichia canis, including three molecul
57 onserved in the omp1 gene locus of Ehrlichia chaffeensis and p30 gene locus of E. canis despite marke
59 N-terminal TR region (18 amino acids) in E. chaffeensis and the complete TR (24 amino acids) in E. c
60 Western immunoblotting using purified E. chaffeensis and the HGE agent as antigens suggested that
61 ompare the genome sequences of strains of E. chaffeensis and to examine the virulence potentials of t
62 ocation of bacterially encoded protein by E. chaffeensis and to identify a specific binding motif and
64 are essential for immunity against Ehrlichia chaffeensis, and protective mechanisms involve blocking
65 tease HtrA was detected on the surface of E. chaffeensis, and TRP120 was degraded by treatment of E.
75 During the intracellular development of E. chaffeensis, both P28 and OMP-1F were expressed mostly i
76 y of the mmpA gene in E. canis and Ehrlichia chaffeensis but not in the human granulocytic ehrlichios
77 e reticulate forms of E. canis and Ehrlichia chaffeensis but was notably found on extracellular morul
78 Therefore, we tested the hypothesis that E. chaffeensis can infect adult Drosophila melanogaster.
80 The heat-sensitive component of viable E. chaffeensis cells was essential for these signaling even
84 se five proteins were similar in isolated E. chaffeensis-containing vacuoles and vacuole-free E. chaf
85 d, which was strikingly more prevalent in E. chaffeensis-containing vacuoles than in vacuole-free E.
88 to be surface exposed), were detected in E. chaffeensis cultured in human monocytic leukemia THP-1 c
89 tein-processing enzymes were expressed by E. chaffeensis cultured in the human promyelocytic leukemia
91 rongly with TRP120 in HeLa cells and with E. chaffeensis dense-cored morulae and areas adjacent to mo
92 se data suggest that the host response to E. chaffeensis depends on the source of the bacteria and th
94 aplasma phagocytophilum, Ehrlichia canis, E. chaffeensis, E. ewingii, Rickettsia rickettsii, R. conor
95 duce PCR products with DNA extracted from E. chaffeensis-, E. canis-, or E. phagocytophila-infected s
97 In this study, we determined that the E. chaffeensis effector TRP120 is posttranslationally modif
99 With the recent discoveries of Ehrlichia chaffeensis, Ehrlichia ewingii, and "Borrelia lonestari,
100 horetic mobility shift assays revealed an E. chaffeensis-encoded protein that specifically bound to t
101 e obligate intracellular bacterium Ehrlichia chaffeensis, even when administered well after infection
104 survive and replicate within phagocytes, E. chaffeensis exploits the host cell by modulating a numbe
108 was downregulated prior to the release of E. chaffeensis from host THP-1 cells and was upregulated at
111 of tandem repeats, were characterized for E. chaffeensis from white-tailed deer (Odocoileus virginian
112 ngly different among the three strains of E. chaffeensis: gamma interferon, CCL5, CXCL1, CXCL2, CXCL7
113 utagenesis is a valuable tool in defining E. chaffeensis genes critical for its persistent growth in
117 one-fourth of all predicted genes of the E. chaffeensis genome, validating that they are functionall
120 nses to another outer membrane protein of E. chaffeensis (GP120) showed similar temporal and quantita
122 ptide repeat units from E. canis gp36 and E. chaffeensis gp47 were substantially less immunoreactive
126 articular, despite its small genome size, E. chaffeensis has four tandem virB6 paralogs (virB6-1, -2,
127 ely related A. phagocytophilum and Ehrlichia chaffeensis have been shown to localize to the host cell
131 rditis and multiorgan failure from Ehrlichia chaffeensis in a previously healthy adolescent is descri
133 This is the first demonstration of RNA of E. chaffeensis in infected blood and acquisition-fed male,
135 irB6 proteins and VirB9 were expressed by E. chaffeensis in THP-1 cells, and amounts of these five pr
139 treatment induced lysosomal fusion of the E. chaffeensis inclusion in a human monocytic leukemia cell
142 strongly with antibodies in sera from an E. chaffeensis-infected dog and human monocytotropic ehrlic
143 ofluorescent microscopy in the nucleus of E. chaffeensis-infected host cells and was detected in nucl
148 hibitor, globomycin, was found to inhibit E. chaffeensis infection and lipoprotein processing in HL-6
149 1, which were strongly upregulated during E. chaffeensis infection and were also upregulated by direc
150 ate that huMAbs are capable of inhibiting E. chaffeensis infection by distinct effector mechanisms: e
155 ated the effects of c-di-GMP signaling on E. chaffeensis infection of the human monocytic cell line T
156 t susceptible SCID mice from fatal Ehrlichia chaffeensis infection, an observation that has been hypo
160 macrophage-tropic bacterium, we assessed E. chaffeensis infections in three mouse strains with diffe
161 tyldimethysilyl)-c-di-GMP (CDGA) inhibits E. chaffeensis internalization into host cells by facilitat
179 n this study suggest that the membrane of E. chaffeensis is very complex, having many expressed prote
180 obligatory intracellular pathogen, Ehrlichia chaffeensis, is characterized by formation of bacterial
182 l cytokines and chemokines by leukocytes, E. chaffeensis lacks lipopolysaccharide and peptidoglycan.
184 ponses to E. chaffeensis lipoproteins, 13 E. chaffeensis lipoprotein genes were cloned into a mammali
185 n expression and host immune responses to E. chaffeensis lipoproteins, 13 E. chaffeensis lipoprotein
187 Western blot analysis of E. canis and E. chaffeensis lysates with the anti-rMmpA serum resulted i
190 To investigate the surface proteins of E. chaffeensis, membrane-impermeable, cleavable Sulfo-NHS-S
191 n TRP32 and host targets localized to the E. chaffeensis morulae or in the host cell cytoplasm adjace
192 study, we assessed two clonally purified E. chaffeensis mutants with insertions within the genes Ech
194 and was located downstream of two Ehrlichia chaffeensis omp-1 homologs and a decarboxylase gene (ubi
195 ptides are conserved between E. muris and E. chaffeensis OMP-19, and they elicited IFN-gamma producti
196 if the ELISA is positive), we identified E. chaffeensis or a serologically and antigenically similar
197 ta or Wisconsin were found not to be from E. chaffeensis or E. ewingii and instead to be caused by a
199 acteria, such as Anaplasma platys, Ehrlichia chaffeensis, Orientia tsutsugamushi, and Rickettsia rick
200 l, membrane, and immunogenic proteomes of E. chaffeensis originating from macrophage and tick cell cu
201 different between mice infected with the E. chaffeensis originating from tick cells or macrophages.
203 P) with DNA sequencing revealed an Ehrlichia chaffeensis p200 interaction located within host promote
205 plasma phagocytophilum MSP2 (p44), Ehrlichia chaffeensis p28-OMP, Ehrlichia canis p30, and Ehrlichia
211 al E. chaffeensis native proteins and two E. chaffeensis recombinant I-site proteins, and this bindin
212 e sensitive than the PCR for detection of E. chaffeensis regardless of the nature of the specimens.
213 ule inhibitor had a significant impact on E. chaffeensis replication and recruitment of the TRP120-in
214 cleotide salvage pathway is essential for E. chaffeensis replication and that it may be important for
216 e obligate intracellular bacterium Ehrlichia chaffeensis resides in early endosome-like vacuoles and
219 chia muris, a pathogen closely related to E. chaffeensis, resulted in anemia, thrombocytopenia, and a
220 use of template DNA extracted from Ehrlichia chaffeensis, Rickettsia rickettsii, and Bartonella hense
221 ae) two-hybrid analysis demonstrated that E. chaffeensis-secreted tandem repeat protein 120 (TRP120)
223 es, identity of the primers to homologous E. chaffeensis sequences, and the availability of similarly
224 he members of the p28 multigene family of E. chaffeensis, sera from two beagle dogs experimentally in
225 n leukemia cell line THP-1 was exposed to E. chaffeensis, significant upregulation of IL-8, IL-1beta,
228 S6-Cd4(tm1Knw) mice also developed active E. chaffeensis-specific immunoglobulin G responses that wer
231 equence polymorphisms in several genes in E. chaffeensis strains have been reported, global genomic d
233 f host cytokine and chemokine profiles by E. chaffeensis strains underlies the distinct host liver di
234 Genomic DNA was extracted from purified E. chaffeensis strains Wakulla and Liberty, and comparative
237 responses and the in vivo replication of E. chaffeensis suggests that D. melanogaster is a suitable
239 proteins provides novel insights into the E. chaffeensis surface and lays the foundation for rational
245 hat documents that insertion mutations in E. chaffeensis that cause attenuated growth confer protecti
246 ve proteins of Ehrlichia canis and Ehrlichia chaffeensis that have been characterized include a famil
248 ive dogs, or when dogs were infected with E. chaffeensis, the animals developed delayed-type hypersen
252 sma (Ehrlichia) phagocytophila and Ehrlichia chaffeensis, the etiologic agents of granulocytic and mo
253 t amplify the 200-bp target amplicon from E. chaffeensis, the human granulocytic ehrlichiosis agent,
254 found in an intravacuolar pathogen Ehrlichia chaffeensis, the tick-borne causative agent of human mon
255 two surface-expressed antigens of Ehrlichia chaffeensis, the variable-length PCR target (VLPT) and t
258 ndocytosis directs A. phagocytophilum and E. chaffeensis to an intracellular compartment secluded fro
261 anonical and noncanonical Wnt pathways by E. chaffeensis TRP effectors stimulates phagocytosis and pr
262 r closely related interacting partners of E. chaffeensis TRP32, TRP47, and TRP120 demonstrate a molec
265 two-hybrid analysis demonstrated that an E. chaffeensis type 1 secretion system substrate, TRP32, in
266 afficked to autophagosomes induced by the E. chaffeensis type IV secretion system effector Etf-1, whi
267 The current study identified a novel E. chaffeensis ubiquitin ligase and revealed an important r
269 rly Ehrlichia) phagocytophilum and Ehrlichia chaffeensis, upon infection of humans, replicate in host
271 lycoprotein (gp19) ortholog of the Ehrlichia chaffeensis variable-length PCR target (VLPT) protein.
274 l-terminal amino acid homology (59%) with E. chaffeensis VLPT and the same chromosomal location; howe
275 e same chromosomal location; however, the E. chaffeensis VLPT gene (594 bp) has tandem repeats that a
277 ected, and EHRL-4-mediated degradation of E. chaffeensis was abrogated by the autophagy inhibitor 3-m
278 on of penicillin-binding protein (PBP) in E. chaffeensis was analyzed by reverse-transcription polyme
285 ria and that of macrophages infected with E. chaffeensis, we have identified few genes that are commo
286 sensitivities for A. phagocytophilum and E. chaffeensis were 93% and 84%, respectively, and specific
287 ter membrane protein gene (p28) of Ehrlichia chaffeensis were analyzed to determine the mechanism of
288 and virB6) of both A. phagocytophila and E. chaffeensis were arranged downstream from a sodB gene an
291 beagle dogs experimentally infected with E. chaffeensis were evaluated for the presence of specific
292 hromatography purified, and native PBP of E. chaffeensis were investigated for their ability to induc
293 five genes in both A. phagocytophila and E. chaffeensis were polycistronically transcribed and contr
294 ominant outer membrane proteins of Ehrlichia chaffeensis were transcribed in blood monocytes of dogs
298 d by Anaplasma phagocytophilum and Ehrlichia chaffeensis with the ompA, 17-kDa surface antigen gene,
299 ng regulates aggregation and sessility of E. chaffeensis within the inclusion through stabilization o
300 hypothesis that immune responses against E. chaffeensis would be different if the mice are challenge