Proteome Analysis for Inflammation Related to Acute and Convalescent Infection

Area of Science:

• Immunology
• Infectious Diseases
• Systems Biology

Background:

• Infectious diseases pose a major global health challenge.
• Understanding pathogen-specific versus common immune responses is crucial for developing effective treatments.
• Previous research has not fully elucidated shared immune signatures across different types of infections.

Purpose of the Study:

• To identify disease-specific and common immune signatures in response to various pathogens.
• To investigate if different pathogens elicit shared molecular responses relevant to therapeutic interventions.
• To analyze immune profiles during acute infection and convalescence across multiple infectious diseases.

Main Methods:

• Analysis of blood samples from patients with Lyme disease, tuberculosis, malaria, dengue virus, West Nile virus, cytomegalovirus, and polyomavirus infections.
• Utilized an antibody-based assay to quantify approximately 350 cell surface markers, cytokines, and chemokines.
• Compared immune profiles during acute infection and convalescent stages against healthy donor blood.

Main Results:

• Identified unique protein signatures specific to the acute phase of infection, which changed during convalescence.
• Observed increased levels of tumor necrosis factor receptor superfamily member 6 (TNR6), C-C Motif Chemokine Receptor 7 (CCR7), and C-C motif chemokine ligand-1 (CCL1) across all pathogen types compared to healthy controls.
• Found enrichment of proteins in common biological pathways, including cell surface receptor signaling and response to external stimuli, irrespective of pathogen type.

Conclusions:

• Demonstrated the existence of common immunoregulatory and proinflammatory signals across diverse infectious agents.
• Highlighted shared molecular pathways and markers that are activated irrespective of whether the pathogen is viral, bacterial, or protozoan.
• Suggests potential for broadly applicable immunomodulatory therapeutic strategies targeting these common pathways.