Improving host-directed therapy for tuberculous meningitis by linking clinical and multi-omics data

Area of Science:

• Neuroscience
• Immunology
• Infectious Diseases

Background:

• Tuberculous meningitis (TBM) is a severe form of tuberculosis with high mortality.
• Corticosteroids offer modest benefits, but their mechanism and patient-specific effects in TBM remain unclear.
• Altered cellular metabolism, particularly tryptophan levels in cerebrospinal fluid (CSF), is a potential factor in TBM outcomes.

Purpose of the Study:

• To investigate the role of tryptophan metabolism in TBM pathogenesis and mortality.
• To explore the relationship between tryptophan metabolism, inflammation, and corticosteroid response in TBM.
• To identify genetic regulation of tryptophan metabolism and the impact of HIV co-infection.

Main Methods:

• Integration of data and specimens from large patient studies and clinical trials in Vietnam and Indonesia.
• Utilizing unbiased metabolomics to analyze CSF tryptophan concentrations.
• Correlating metabolic profiles with clinical outcomes, inflammation markers, and genetic data.

Main Results:

• High CSF tryptophan concentrations are associated with increased mortality in Indonesian TBM patients.
• CSF tryptophan levels are significantly influenced by genetic factors.
• The study aims to elucidate the complex interplay of tryptophan metabolism, immune response, and treatment efficacy in TBM.

Conclusions:

• The tryptophan metabolic pathway represents a promising area for novel therapeutic targets in TBM.
• Identifying patients who benefit from corticosteroids may be possible by understanding individual metabolic profiles.
• Further research is needed to fully characterize the role of tryptophan metabolism in TBM and develop targeted interventions.