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Updated: May 7, 2026
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Induction and Diverse Assessment Indicators of Experimental Autoimmune Encephalomyelitis
Published on: September 9, 2022
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The EBV-autoimmunity axis: mechanistic insights in SLE, MS and PSC
Seyhan Yazar1,2, Nicholas Schwab3, Nicholas S R Sanderson4,5
1Precision Immunology Program, Garvan Institute of Medical Research, Darlinghurst, NSW, Australia.
Immunology and Cell Biology
|May 6, 2026
Summary
Epstein-Barr virus nuclear antigen 2 (EBNA2) hijacks host cell enhancers in memory B cells. This epigenetic reprogramming transforms these cells into highly efficient antigen-presenting cells (APCs).
Area of Science:
- Immunology
- Epigenetics
- Virology
Background:
- Epstein-Barr virus (EBV) infects B cells, establishing latency.
- Memory B cells are crucial for adaptive immunity.
- The role of EBV's EBNA2 in B cell reprogramming is under investigation.
Purpose of the Study:
- To investigate how EBNA2 mediates host enhancer hijacking.
- To understand the impact of EBNA2 on B cell identity and function.
- To elucidate the mechanisms behind B cell reprogramming into antigen-presenting cells (APCs).
Main Methods:
- Analysis of EBV-infected CD27+ CD21low memory B cells.
- Epigenetic analysis of host cell enhancer regions.
- Transcriptomic and immunophenotypic profiling.
Main Results:
- Latent EBNA2 was observed in memory B cells.
- EBNA2 acts as an epigenetic remodeler, binding to host enhancers.
- This hijacking disrupts B cell identity, upregulating TBX21 (T-bet), ZEB2, and MHC class II machinery.
- Reprogrammed B cells exhibit hyper-efficient APC function.
Conclusions:
- EBNA2-mediated enhancer hijacking is a key mechanism in EBV-driven B cell reprogramming.
- This process converts memory B cells into potent APCs, potentially impacting immune responses.
- Understanding this reprogramming is vital for EBV pathogenesis and therapeutic strategies.
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