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Published on: November 5, 2019
Functional genomics studies of the human pathogen Neisseria meningitidis
Elena Del Tordello1, Davide Serruto
1Novartis Vaccines & Diagnostics, Siena, Italy.
Abstract:
Neisseria meningitidis is a strictly human pathogen and is one of the major causes of septicemia and meningitis worldwide. Functional genomics approaches have been extensively applied to study how N. meningitidis adapts to grow and survive in different human niches encountered during the infection. DNA microarrays performed in in vitro and ex vivo conditions have revealed changes in the transcriptome profiles of N. meningitidis upon interaction with human cells and after incubation in human serum and blood. Mutagenesis studies allowed detecting mutants in genes crucial for N. meningitidis colonization and systemic infection. The analysis of N. meningitidis genomes has been also successful in the identification of vaccine candidates used to develop an effective protein-based vaccine. The application of all these approaches revealed the potential to identify new virulence factors and vaccine candidates and to assign functions to previously uncharacterized genes providing new insights in the biology and pathogenesis of N. meningitidis.
Insights
Functional genomics studies reveal how Neisseria meningitidis (meningococcus) adapts to human environments. These findings identify potential virulence factors and vaccine candidates for controlling this pathogen.
Area of Science:
- Microbiology
- Genomics
- Pathogenesis
Background:
- Neisseria meningitidis is a significant global cause of septicemia and meningitis.
- Understanding its adaptation to human niches is crucial for combating infection.
Purpose of the Study:
- To investigate the adaptive strategies of N. meningitidis using functional genomics.
- To identify novel virulence factors and vaccine candidates.
Main Methods:
- DNA microarrays to analyze transcriptome changes in vitro and ex vivo.
- Mutagenesis studies to identify genes essential for colonization and infection.
- Genomic analysis for vaccine candidate discovery.
Main Results:
- Transcriptome alterations observed upon interaction with human cells, serum, and blood.
- Identification of genes critical for N. meningitidis colonization and systemic infection.
- Discovery of potential vaccine candidates through genomic analysis.
Conclusions:
- Functional genomics provides insights into N. meningitidis biology and pathogenesis.
- These approaches facilitate the identification of new virulence factors and vaccine targets.
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