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Updated: Jan 11, 2026

Isolation and Quantification of Epstein-Barr Virus from the P3HR1 Cell Line
Published on: September 28, 2022
Epstein-Barr Virus Expressed Long Non-Coding RNA (lncBARTs) Regulate EBV Latent Genome Replication.
Jiayan Liu1,2, Dittman Lai-Shun Chung1,2,3, Larry Ka-Yue Chow3
1State Key Laboratory for Emerging Infectious Diseases and Department of Microbiology, The University of Hong Kong, Pokfulam, Hong Kong SAR, China.
Epstein-Barr virus (EBV) long non-coding RNAs (lncBARTs) are crucial for viral genome replication and EBV-associated cancer development. These lncRNAs anchor viral DNA to chromosomes by interacting with key proteins, influencing host gene expression and promoting tumorigenesis.
Area of Science:
- Virology
- Molecular Biology
- Cancer Research
Background:
- Epstein-Barr virus (EBV) is a widespread human herpesvirus linked to various cancers.
- EBV-associated cancers express essential viral antigens and high levels of long non-coding RNAs (lncBARTs).
- The precise functions of lncBARTs in the EBV life cycle and cancer pathogenesis remain unclear.
Purpose of the Study:
- To elucidate the role of lncBARTs in EBV genome replication.
- To investigate the molecular mechanisms by which lncBARTs influence EBV latency and cancer development.
- To identify interactions between lncBARTs and host cellular factors in EBV-infected cells.
Main Methods:
- Investigated the role of lncBARTs in tethering the EBV oriP region to chromosomes.
- Analyzed the functional interaction of lncBARTs with a protein complex including BRD4, CTCF, and EBNA1.
- Assessed the impact of lncBARTs and associated complexes on MYC and BCL2 gene expression.
Main Results:
- Demonstrated that lncBARTs are essential for maintaining EBV genome replication by influencing oriP tethering.
- Identified a functional interaction between lncBARTs and the BRD4/CTCF/EBNA1 complex at the oriP region, facilitating episome replication.
- Showed that lncBARTs-BRD4/CTCF complexes regulate MYC and BCL2 expression, contributing to host epigenome reprogramming.
Conclusions:
- lncBARTs modulate EBV latency through interactions with the oriP region.
- lncBARTs-BRD4/CTCF complexes promote host epigenome reprogramming.
- These mechanisms drive tumorigenesis in EBV-associated epithelial cancers.
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