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Analysis of the prevalence, secretion and function of a cell cycle-inhibiting factor in the melioidosis pathogen Burkholderia pseudomallei
Pumirat P. - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Analysis of the prevalence, secretion and function of a cell cycle-inhibiting factor in the melioidosis pathogen Burkholderia pseudomallei
ผู้แต่ง / หัวหน้าโครงการ (EN): Pumirat P.
บทคัดย่อ (EN): Enteropathogenic and enterohaemorrhagic Escherichia coli express a cell cycle-inhibiting factor (Cif), that is injected into host cells via a Type III secretion system (T3SS) leading to arrest of cell division, delayed apoptosis and cytoskeletal rearrangements. A homologue of Cif has been identified in Burkholderia pseudomallei (CHBP; Cif homologue in B. pseudomallei; BPSS1385), which shares catalytic activity, but its prevalence, secretion and function are ill-defined. Among 43 available B. pseudomallei genome sequences, 33 genomes (76.7%) harbor the gene encoding CHBP. Western blot analysis using antiserum raised to a synthetic CHBP peptide detected CHBP in 46.6% (7/15) of clinical B. pseudomallei isolates from the endemic area. Secretion of CHBP into bacterial culture supernatant could not be detected under conditions where a known effector (BopE) was secreted in a manner dependent on the Bsa T3SS. In contrast, CHBP could be detected in U937 cells infected with B. pseudomallei by immunofluorescence microscopy and Western blotting in a manner dependent on bsaQ. Unlike E. coli Cif, CHBP was localized within the cytoplasm of B. pseudomallei-infected cells. A B. pseudomallei chbP insertion mutant showed a significant reduction in cytotoxicity and plaque formation compared to the wild-type strain that could be restored by plasmid-mediated trans- complementation. However, there was no defect in actin-based motility or multinucleated giant cell formation by the chbP mutant. The data suggest that the level or timing of CHBP secretion differs from a known Bsa-secreted effector and that CHBP is required for selected virulence-associated phenotypes in vitro. © 2014 Pumirat et al.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เอกสารแนบ (EN): https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901489948&doi=10.1371%2fjournal.pone.0096298&partnerID=40&md5=b1eb9cd564091e8a472660161799280c
เผยแพร่โดย (EN): มหาวิทยาลัยมหิดล
คำสำคัญ (EN): Mutation
เจ้าของลิขสิทธิ์ (EN): มหาวิทยาลัยมหิดล
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Analysis of the prevalence, secretion and function of a cell cycle-inhibiting factor in the melioidosis pathogen Burkholderia pseudomallei
Pumirat P.
มหาวิทยาลัยมหิดล
ไม่ระบุวันที่เผยแพร่
Multitarget quantitative PCR improves detection and predicts cultivability of the pathogen Burkholderia pseudomallei Immune response to recombinant Burkholderia pseudomallei FliC Utilization of whole-cell MALDI-TOF mass spectrometry to differentiate Burkholderia pseudomallei wild-type and constructed mutants Soil nutrient depletion is associated with the presence of Burkholderia pseudomallei Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry for the identification of Burkholderia pseudomallei from Asia and Australia and differentiation between Burkholderia specie The appearance of allelopathic substances affecting the presence of Burkholderia pseudomallei Source-identifying biomarker ions between environmental and clinical Burkholderia pseudomallei using whole-cell Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry (MALDI-TOF Cadmium induces apoptotic program imbalance and cell cycle inhibitor expression in cultured human astrocytes การเฝ้าระวังเชื้อ Burkholderia pseudomallei ในสัตว์จากโรงฆ่าสัตว์ในจังหวัดนครปฐมและราชบุรี Intracellular bacteria interfere with dendritic cell functions: Role of the type I interferon pathway
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