Cyclocytidine hydrochloride inhibits the synthesis of relaxed circular DNA of hepatitis B virus.
Ontology highlight
ABSTRACT: Background
Cyclocytidine hydrochloride (HCl) has been reported to inhibit DNA synthesis by affecting DNA polymerase. Here, we tested the antiviral effect of cyclocytidine on hepatitis B virus (HBV) DNA synthesis, which is reliant on DNA polymerase activity.Materials and methods
Cyclocytidine HCl was treated to HBV-producing HepAD38 cells or added to an endogenous polymerase reaction, and HBV DNA was detected by Southern blot.Results
Treatment of 20 µM cyclocytidine HCl significantly decreased the production of relaxed circular (rc) DNA in HepAD38 cells and block rcDNA synthesis in endogenous polymerase reaction (EPR), a cell free assay, possibly by inhibiting the HBV DNA polymerase activity.Conclusion
Cyclocytidine HCl could inhibit the synthesis of HBV rcDNA, the precursor of covalently closed circular DNA, and this result provides a case for the usage of "old" drugs for "new" applications.
SUBMITTER: Wang X
PROVIDER: S-EPMC9285472 | biostudies-literature | 2022
REPOSITORIES: biostudies-literature
Publications
Cyclocytidine hydrochloride inhibits the synthesis of relaxed circular DNA of hepatitis B virus.
Wang Xue X Xiao Yihan Y Cui Zhigang Z Li Zongxin Z Li Lihua L Wu Lixian L Yin Feifei F Cui Xiuji X
PeerJ 20220712
<h4>Background</h4>Cyclocytidine hydrochloride (HCl) has been reported to inhibit DNA synthesis by affecting DNA polymerase. Here, we tested the antiviral effect of cyclocytidine on hepatitis B virus (HBV) DNA synthesis, which is reliant on DNA polymerase activity.<h4>Materials and methods</h4>Cyclocytidine HCl was treated to HBV-producing HepAD38 cells or added to an endogenous polymerase reaction, and HBV DNA was detected by Southern blot.<h4>Results</h4>Treatment of 20 µM cyclocytidine HCl si ...[more]
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