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Updated: Jun 23, 2025
Separation of Immune Cell Subpopulations in Peripheral Blood Samples from Children with Infectious Mononucleosis
Published on: September 7, 2022
The Impact of Acute EBV Infection on Changes in the Serum Proteome in Children-A Pilot Study
Katarzyna Mazur-Melewska1, Magdalena Luczak2, Joanna Watral2
1Department of Infectious Diseases and Child Neurology, Karol Marcinkowski University of Medical Sciences, 60-572 Poznań, Poland.
Insights
Epstein-Barr virus (EBV) infection alters protein profiles in children, impacting immune responses and inflammation. This proteomic study identifies key proteins affected during acute infectious mononucleosis (IM) and convalescence.
Area of Science:
- Pediatric Proteomics
- Virology
- Immunology
Background:
- Epstein-Barr virus (EBV) is a common human herpesvirus with significant health implications, particularly in children.
- Understanding the host's protein response to EBV infection is crucial for elucidating disease pathogenesis and long-term effects.
- Proteomics offers a powerful approach to identify molecular changes associated with viral infections.
Purpose of the Study:
- To investigate the impact of Epstein-Barr virus (EBV) infection on the proteome of children.
- To identify specific proteins that are differentially expressed during acute infectious mononucleosis (IM) and convalescence.
- To explore the role of these proteins in immune response, inflammation, and oxidative stress.
Main Methods:
- Proteomic analysis of blood samples from seventy-nine children.
- Categorization of samples into three groups: EBV-naive, acute IM, and 12-month convalescents.
- Statistical analysis to identify differentially expressed proteins between groups.
Main Results:
- Thirty-nine proteins were identified that distinguish EBV-naive children from those with acute IM.
- Key proteins identified include actin, lumican, peroxiredoxin-2, fibulin-1, gelsolin, and alpha-2-macroglobulin.
- Elevated levels of oxidative stress markers (e.g., peroxiredoxin-2), apolipoproteins, and complement system proteins were observed during acute IM.
Conclusions:
- EBV infection significantly alters the pediatric proteome, affecting immune response, cell adhesion, and inflammation.
- Proteomic analysis reveals potential biomarkers for EBV infection and provides insights into virus-induced chronic processes.
- Further research is needed to establish definitive links between identified proteins and EBV infection mechanisms.
Abstract:
This study investigates the impact of Epstein-Barr virus (EBV) infection on children's proteomes across different phases of the disease, utilising seventy-nine blood samples categorised into three groups: EBV-naive patients, acute infectious mononucleosis (IM) cases, and convalescents followed up for 12 months post-IM. The aim is to identify proteins influenced by EBV infection, shedding light on the chronic processes triggered by the virus. The results reveal thirty-nine proteins distinguishing between naive patients and those with IM, including actin, lumican, peroxiredoxin-2, fibulin-1, gelsolin, and alpha-2-macroglobulin, which are involved in immune responses, cell adhesion, and inflammation. Elevated oxidative stress markers like peroxiredoxin-2 in IM patients suggest potential links to EBV's induction of reactive oxygen species. Increased levels of apolipoproteins A-I, A-IV, C-IV, and M during IM imply associations with viral infection, while complement system proteins (C1q, C1r, and C8 gamma chain) are also elevated, reflecting their role in the immune response and viral clearance. This study's focus on children provides unique insights into EBV's impact on young populations, emphasising proteomics' role in uncovering protein associations and understanding the virus's long-term consequences. However, specific relationships between identified proteins and EBV infection require further investigation.
