EBV Rta and KSHV Reactivation in 293 Cells
Author Information
Author(s): Chen Yen-Ju, Tsai Wan-Hua, Chen Yu-Lian, Ko Ying-Chieh, Chou Sheng-Ping, Chen Jen-Yang, Lin Su-Fang
Primary Institution: National Taiwan University
Hypothesis
In 293 cells, Rta-induced G1 cell cycle arrest could provide an ideal environment for virus reactivation if EBV or KSHV coexists.
Conclusion
The study found that EBV Rta alone is sufficient to reactivate both EBV and KSHV in 293 cells.
Supporting Evidence
- Rta modulated the levels of G1 arrest proteins in 293 cells.
- Doxycycline treatment led to significant viral reactivation.
- Cell cycle arrest was observed between 6 and 48 hours after Rta induction.
- Rta-induced G1 arrest was associated with cellular senescence.
- Both EBV and KSHV reactivation occurred with similar efficacy.
Takeaway
Researchers found that a protein from the Epstein-Barr virus can wake up both EBV and another virus called KSHV in certain cells, which helps the viruses start to multiply.
Methodology
The study used a doxycycline-inducible Rta system in 293 cells to analyze the effects of Rta on cell cycle regulation and viral reactivation.
Limitations
The precise mechanism of Rta-mediated KSHV reactivation is not fully resolved.
Digital Object Identifier (DOI)
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