Effect of hepatitis B virus infection on apoptosis of a human choriocarcinoma cell line in vitro. Issue 6 (30th May 2013)

• Record Type: Journal Article
• Authors: Bai, Guiqin; Fu, Fengping; Tang, Yao; Wang, Yueling
• Is Part Of: Journal of obstetrics and gynaecology research. Volume 39:Issue 6(2013:Jun.)
• Page Start: 1200
• Page End: 1211
• Publication Date: 2013-05-30
• Subjects: Gynecology -- Periodicals; Obstetrics -- Periodicals; 618.1005
• DOI: 10.1111/jog.12046
• Languages: English
• ISSNs: 1341-8076

Abstract

<abstract abstract-type="main"> <title>Abstract</title> <sec id="jog12046-sec-0001" sec-type="section"> <title>Aim</title> <p>To investigate the effect and mechanism of hepatitis B virus (HBV) infection on the human choriocarcinoma cell line, JEG‐3, in relation to apoptosis and intrauterine infection.</p> </sec> <sec id="jog12046-sec-0002" sec-type="section"> <title>Material and Methods</title> <p>HBV‐DNA serum was used to infect the choriocarcinoma cell line, JEG‐3, <italic>in vitro</italic>. Real‐time fluorescence quantitative PCR (RT‐PCR) was then employed to detect intracellular replication of HBV DNA. Cells were also stained with Annexin‐V and propidium iodide (PI) to identify the stages of apoptosis following infection. In addition, reverse transcription PCR was used to detect intracellular <italic>HBx</italic> mRNA levels, and Western blotting and immunohistochemistry were used to detect changes in the intracellular expression of HBxAg and phosphatidylinositol kinase 3 (PI3K). Flow cytometry was also used to detect the intracellular levels of phosphorylated AKT (pAKT).</p> </sec> <sec id="jog12046-sec-0003" sec-type="section"> <title>Results</title> <p>After JEG‐3 cells were infected with HBV <italic>in vitro</italic>, HBV DNA was detected. The percentage of cells in early and late stage apoptosis also decreased significantly. Expression of <italic>HBx</italic> mRNA and HBxAg were detected, and intracellular levels of PI3K and pAKT were observed to significantly increase.</p> </sec> <sec id="jog12046-sec-0004" sec-type="section"> <title>Conclusion</title> <p>HBV infected JEG‐3 cells <italic>in vitro</italic>, resulting in an inhibition of early and late stage apoptosis. In addition, the HBxAg/PI3K/pAKT pathway is a possible mechanism mediating this inhibition of apoptosis, and the infection of the placenta by HBV.</p> </sec> </abstract>