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Filename: controllers/Detail.php
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Function: _error_handler
File: /var/www/html/index.php
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Filename: controllers/Detail.php
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Function: _error_handler
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Function: insertAPISummary
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Genetic differences among mammalian hosts and among strains of Mycobacterium tuberculosis (Mtb) are well-established determinants of tuberculosis (TB) patient outcomes. The advent of recombinant inbred mouse panels and next-generation transposon mutagenesis and sequencing approaches has enabled dissection of complex host-pathogen interactions. To identify host and pathogen genetic determinants of Mtb pathogenesis, we infected members of the highly diverse BXD family of strains with a comprehensive library of Mtb transposon mutants (TnSeq). Members of the BXD family segregate for Mtb-resistant C57BL/6J (B6 or B) and Mtb-susceptible DBA/2J (D2 or D) haplotypes. The survival of each bacterial mutant was quantified within each BXD host, and we identified those bacterial genes that were differentially required for Mtb fitness across BXD genotypes. Mutants that varied in survival among the host family of strains were leveraged as reporters of "endophenotypes," each bacterial fitness profile directly probing specific components of the infection microenvironment. We conducted quantitative trait loci (QTL) mapping of these bacterial fitness endophenotypes and identified 140 host-pathogen QTL (hpQTL). We located a QTL hotspot on chromosome 6 (75.97-88.58 Mb) associated with the genetic requirement of multiple Mtb genes: Rv0127 (mak), Rv0359 (rip2), Rv0955 (perM), and Rv3849 (espR). Together, this screen reinforces the utility of bacterial mutant libraries as precise reporters of the host immunological microenvironment during infection and highlights specific host-pathogen genetic interactions for further investigation. To enable downstream follow-up for both bacterial and mammalian genetic research communities, all bacterial fitness profiles have been deposited into GeneNetwork.org and added into the comprehensive collection of TnSeq libraries in MtbTnDB.
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http://dx.doi.org/10.1093/g3journal/jkad147 | DOI Listing |
Eur J Orthop Surg Traumatol
December 2024
Saint Paul hospital Millenium Medical College, Addis Ababa, Ethiopia.
Background: Due to the specific anatomical features of the tibia (limited soft tissue coverage), more than a quarter of its fractures are classified as open, representing the most common open long-bone injuries. Open tibial fractures frequently cause significant bone comminution, periosteal stripping, soft tissue loss, contamination and are prone to bacterial entry with biofilm formation, which increases the risk of deep bone infection. The main objective of this study was to determine prevalence of infection and its associated factors in surgically treated open tibial fracture, at Addis Ababa Burn Emergency and Trauma (AaBET) hospital.
View Article and Find Full Text PDFFront Microbiol
December 2024
Department of Food and Animal Biotechnology, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea.
Introduction: is a notorious foodborne pathogen, frequently contaminating powdered infant formula and causing life-threatening diseases in infants. The escalating emergence of antibiotics-resistant mutants has led to increased interest in using bacteriophage as an alternative antimicrobial agent.
Methods: Two phages, CR8 and S13, were isolated from feces and soil samples and their morphology, physiology, and genomics were characterized.
Front Cell Infect Microbiol
December 2024
Gynaecology Department, Hua County People's Hospital, Anyang, China.
Introduction: The irrational use of antibiotics has facilitated the emergence of multidrug- resistant ., undermining the effectiveness of the currently available antibiotics. Consequently, there is an urgent need to explore new approaches, with phage therapy emerging as a promising alternative.
View Article and Find Full Text PDFMicrob Biotechnol
December 2024
Departamento de Química Biológica Ranwel Caputto, CIQUIBIC-CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina.
In this work, we developed a plasmid-based CRISPR-Cas9 strategy for editing Lactococcus cremoris, which allows easy generation of plasmid-free strains with the desired modification. We constructed versatile shuttle vectors based on the theta-type pAMβ1 promiscuous replicon and p15A ori, expressing both the Cas9 nuclease gene (under pH-regulated promoters derived from P170) and a single-guide RNA for specific targeting (under a strong constitutive promoter). The vectors designed for plasmid targeting were very effective for low- and high-copy-number plasmid curing in L.
View Article and Find Full Text PDFCommun Biol
December 2024
Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.
Klebsiella pneumoniae carbapenemase-producing Pseudomonas aeruginosa (KPC-PA) isolates have quickly expanded in China, especially the high-risk clone ST463. We aimed to explore the evolution of KPC-related plasmids driving ST463 clone success. Whole-genome sequencing of 1258 clinical P.
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