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Host-Pathogen Interactions in K. pneumoniae Urinary Tract Infections: Investigating Genetic Risk Factors in the
Chi-Sheng Chen1, Kuo-Sheng Hung2, Ming-Jr Jian1
1Division of Clinical Pathology, Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei 114, Taiwan.
Background:
Klebsiella pneumoniae (K. pneumoniae) urinary tract infections pose a significant challenge in Taiwan. The significance of this issue arises because of the growing concerns about the antibiotic resistance of K. pneumoniae. Therefore, this study aimed to uncover potential genomic risk factors in Taiwanese patients with K. pneumoniae urinary tract infections through genome-wide association studies (GWAS).
Methods:
Genotyping data are obtained from participants with a history of urinary tract infections enrolled at the Tri-Service General Hospital as part of the Taiwan Precision Medicine Initiative (TPMI). A case-control study employing GWAS is designed to detect potential susceptibility single-nucleotide polymorphisms (SNPs) in patients with K. pneumoniae-related urinary tract infections. The associated genes are determined using a genome browser, and their expression profiles are validated via the GTEx database. The GO, Reactome, DisGeNET, and MalaCards databases are also consulted to determine further connections between biological functions, molecular pathways, and associated diseases between these genes.
Results:
The results identified 11 genetic variants with higher odds ratios compared to controls. These variants are implicated in processes such as adhesion, protein depolymerization, Ca2+-activated potassium channels, SUMOylation, and protein ubiquitination, which could potentially influence the host immune response.
Conclusions:
This study implies that certain risk variants may be linked to K. pneumoniae infections by affecting diverse molecular functions that can potentially impact host immunity. Additional research and follow-up studies are necessary to elucidate the influence of these risk variants on infectious diseases and develop targeted interventions for mitigating the spread of K. pneumoniae urinary tract infections.
Insights
Genome-wide association studies identified 11 genetic variants linked to Klebsiella pneumoniae urinary tract infections in Taiwan. These variants may impact host immunity through various molecular functions, suggesting potential targets for intervention.
Area of Science:
- Genomics
- Infectious Diseases
- Host-Pathogen Interactions
Background:
- *Klebsiella pneumoniae* ( *K. pneumoniae* ) urinary tract infections (UTIs) are a significant health concern in Taiwan.
- Increasing antibiotic resistance in *K. pneumoniae* necessitates identifying host genomic factors contributing to susceptibility.
- Genome-wide association studies (GWAS) are crucial for uncovering genetic risk factors in UTIs.
Purpose of the Study:
- To identify potential genomic risk factors associated with *K. pneumoniae* UTIs in the Taiwanese population.
- To investigate the genetic basis of susceptibility to *K. pneumoniae* infections using GWAS.
- To uncover novel genetic variants that may predispose individuals to *K. pneumoniae* UTIs.
Main Methods:
- A case-control study design utilizing genotyping data from the Taiwan Precision Medicine Initiative (TPMI).
- Genome-wide association studies (GWAS) were employed to detect single-nucleotide polymorphisms (SNPs) associated with *K. pneumoniae* UTIs.
- Bioinformatic analyses including genome browsing, GTEx database validation, and pathway analysis using GO, Reactome, DisGeNET, and MalaCards.
Main Results:
- Eleven genetic variants were identified with significantly higher odds ratios in patients with *K. pneumoniae* UTIs compared to controls.
- These variants are associated with critical biological processes including bacterial adhesion, protein depolymerization, ion channel function, and protein modification (SUMOylation, ubiquitination).
- The identified variants potentially modulate the host immune response, influencing susceptibility to *K. pneumoniae* infection.
Conclusions:
- Specific genetic risk variants may increase susceptibility to *K. pneumoniae* infections by affecting host molecular functions and immunity.
- Further research is warranted to fully elucidate the role of these risk variants in infectious diseases.
- Understanding these genetic factors could lead to targeted interventions for managing and preventing *K. pneumoniae* UTIs.
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