Activation of calcium signaling by hepatitis B virus-X protein in liver cells

In Silico Prediction and Docking of Tertiary Structure of Multifunctional Protein X of Hepatitis B Virus

Hepatitis B virus (HBV) infection is a universal health problem and may result into acute, fulminant, chronic hepatitis liver cirrhosis, or hepatocellular carcinoma. Sequence for protein X of HBV was retrieved from Uniprot database. ProtParam from ExPAsy server was used to investigate the physicochemical properties of the protein. Homology modeling was carried out using Phyre2 server, and refin...

rpb۵-mediating protein suppresses hepatitis b virus (hbv) transcription and replication by counteracting the transcriptional activation of hepatitis b virus x protein in hbv replication mouse model

conclusions our study demonstrated that a low dose of rmp could inhibit hbv transcription and replication, which is dependent on the appearance of hbx in vivo. results rpb5-mediating protein could inhibit hbv transcription and replication in groups transfected with the 1.2 wt and hbx. the inhibitory effect disappeared in the 1.2x (-) groups, yet it reappeared in the groups co-transfected with 1...

Role of hepatitis B virus X protein in liver cancer.

The hepatitis B virus X protein elevates cytosolic calcium signals by modulating mitochondrial calcium uptake.

Chronic hepatitis B virus (HBV) infections are associated with the development of hepatocellular carcinoma (HCC). The HBV X protein (HBx) is thought to play an important role in the development of HBV-associated HCC. One fundamental HBx function is elevation of cytosolic calcium signals; this HBx activity has been linked to HBx stimulation of cell proliferation and transcription pathways, as we...

Hepatitis B virus X protein induces expression of alpha-fetoprotein and activates PI3K/mTOR signaling pathway in liver cells

The hepatitis B virus (HBV)-X protein (HBx) induces malignant transformation of liver cells, and elevated expression of alpha-fetoprotein (AFP) is a significant biomarker of hepatocarcinogenesis. However, the role of AFP in HBV-related hepatocarcinogenesis is unclear. In this study, we investigated the regulatory impact of AFP expression on HBx-mediated malignant transformation of human hepatoc...