Skip to main content
Log in

Hepatitis B virus x gene-downregulated growth-arrest specific 5 inhibits the cell viability and invasion of hepatocellular carcinoma cell lines by activating Y-box-binding protein 1/p21 signaling

  • Research Article
  • Published:
Journal of Cell Communication and Signaling Aims and scope

Abstract

The long noncoding RNA growth-arrest specific 5 (GAS5) is a suppressor of many cancers. However, the role and mechanism of action of GAS5 in hepatitis B virus (HBV)-related hepatocellular carcinoma (HCC) remain unclear. Here, the expression of hepatitis B virus x gene (HBx) mRNA and GAS5 was assessed by qRT–PCR, and western blot analysis was performed to determine the protein expression levels. In addition, the cell viability and invasion of cells were confirmed using  MTT assay and Transwell assay, respectively. The DNA methylation level of GAS5 was measured by methylation-specific PCR. Moreover, RIP assay and RNA pull down assay were carried out to examine the combination of Y-box-binding protein 1 (YBX1) and GAS5. First, our data proved that HBx is increased, while GAS5 is decreased in HCC cell lines. Subsequently, we found that HBx facilitates HCC cell viability and invasion by inhibiting GAS5 expression. Then, we further clarified that HBx induces the DNA methylation of GAS5 by promoting methyltransferase expression, thereby suppressing GAS5 expression. Furthermore, GAS5 binds YBX1 and promotes YBX1 and p21 expression. Finally, the functional analysis revealed that the upregulation of GAS5 could attenuate cell viability and invasion by boosting p21 expression via binding YBX1. Overall, our results demonstrated that HBx promotes HCC progression by inducing GAS5 methylation to reduce its expression. The upregulation of GAS5 suppressed HBV-related HCC by activating YBX1/p21 signaling. Our data provide novel evidence supporting the potential of GAS5 as a treatment target in HBV-related HCC.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5

Similar content being viewed by others

Data availability

The datasets used and/or analysed during the current study are available from the corresponding author on reasonable request.

References

Download references

Acknowledgements

We thank Xue Hong and Dai Yiwen for their help for shared routine work (short-time changing media for cells and some cleaning work etc.), which is not essential for this paper.

Funding

This study was supported by Youth Program of National Natural Science Foundation of China (No. 81702829).

Author information

Authors and Affiliations

Authors

Contributions

XY designed the data and drafted the paper; XY, ZY, LH, XZ, ZL, RW, FH, GW, XG, HZ participated the experiments; XY, HZ analyzed the data; all author read and approved the paper.

Corresponding author

Correspondence to Hongchuan Zhao.

Ethics declarations

Ethics approval

The experiment was approved by the Ethics and Research Conduct Committee of The First Affiliated Hospital of Anhui Medical University.

Conflict of interest

The authors declare that they have no conflict of interest..

Additional information

Publisher’s Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Supplementary Information

Below is the link to the electronic supplementary material.

12079_2021_645_MOESM1_ESM.tif

Supplementary Figure 1. GAS5 has no effect on the YBX1 mRNA level. (A-B) The expression of YBX1 mRNA was determined using qRT-PCR. The experiments were performed in triplicate.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Yu, X., Ye, Z., Hou, L. et al. Hepatitis B virus x gene-downregulated growth-arrest specific 5 inhibits the cell viability and invasion of hepatocellular carcinoma cell lines by activating Y-box-binding protein 1/p21 signaling. J. Cell Commun. Signal. 16, 179–190 (2022). https://doi.org/10.1007/s12079-021-00645-z

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s12079-021-00645-z

Keywords

Navigation