Meningococcal pathogenesis: at the boundary between the pre- and post-genomic eras
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Updated: Oct 3, 2026

A Choroid Plexus Epithelial Cell-based Model of the Human Blood-Cerebrospinal Fluid Barrier to Study Bacterial Infection from the Basolateral Side
Published on: May 6, 2016
1INSERM U411, Faculté de Médecine Necker - Enfants Malades, Université René Descartes, 75730 Cedex 15, Paris, France.
Abstract:
Meningococcal disease remains an important public health burden worldwide and, indeed, cause of death, particularly in poorer countries. The rapidly progressive nature of infections means that antibiotic therapy often comes too late. Vaccines are of limited efficacy in infants, one of the most vulnerable age groups, and do not exist for bacteria of serogroup B. Hence, much remains to be achieved in terms of vaccine design and the understanding of the pathogenesis of meningococcal disease. The causative bacterium, Neisseria meningitidis, is usually a commensal of the nasopharynx. Factors that lead to the invasion of the bloodstream, often followed by the crossing of the blood-brain barrier and meningitis, may be partly host- and partly bacterium-dependent, but are ill-understood. It is hoped that, taken together with the fundamental knowledge gained from biochemical and genetic studies, the huge amount of new information made available with the recent publication of the genome sequences will help to unlock more of the secrets of the lifestyle and pathogenic potential of this still poorly understood pathogen.
Insights
Meningococcal disease poses a global health threat, especially in developing nations. Further research into Neisseria meningitidis pathogenesis and vaccine development is crucial for effective control.
Area of Science:
- Microbiology
- Infectious Diseases
- Vaccinology
Background:
- Meningococcal disease is a significant global health issue, causing mortality, particularly in low-income countries.
- Current antibiotic treatments are often delayed due to the rapid progression of infections.
- Existing vaccines have limited effectiveness in infants and are unavailable for serogroup B bacteria.
Purpose of the Study:
- To advance the understanding of meningococcal disease pathogenesis.
- To identify targets for improved vaccine design against Neisseria meningitidis.
- To explore the factors contributing to invasive meningococcal disease.
Main Methods:
- Analysis of Neisseria meningitidis genome sequences.
- Biochemical and genetic studies of the pathogen.
- Investigation of host-pathogen interactions in meningococcal disease.
Main Results:
- The study highlights gaps in current knowledge regarding meningococcal disease.
- Genome sequencing provides new data for understanding pathogen lifestyle and virulence.
- Factors influencing bacterial invasion and meningitis remain poorly understood.
Conclusions:
- Significant advancements are needed in vaccine development for meningococcal disease.
- Further research is essential to elucidate the pathogenesis of Neisseria meningitidis infections.
- Integrating genomic data with fundamental studies may unlock key insights into this pathogen.
Related Concept Videos
Evolution of Microbial Genome
Regulation of Bacterial Virulence
Bacterial Meningitis
Viral Meningitis
Bacterial Meningitis I: Introduction
Bacterial Meningitis II: Pathophysiology

