Hepatitis B virus infection and replication in human bone marrow mesenchymal stem cells

• Published in: Virology journal 2011-10, Vol.8 (1), p.486-486, Article 486
• Main Authors: Ma, Ruiping, Xing, Quantai, Shao, Lihua, Wang, Dakun, Hao, Qingzhi, Li, Xia, Sai, Lintao, Ma, Lixian
• Format: Article
• Language: English
• Subjects: Adolescent; Adult; Bone marrow; Bone Marrow - virology; Care and treatment; Cells, Cultured; Chinese medicine; Culture Media - chemistry; Deoxyribonucleic acid; Diagnosis; DNA; DNA replication; DNA, Viral - analysis; DNA, Viral - genetics; Experiments; Genetic aspects; Health aspects; Hepatitis B; Hepatitis B e Antigens - metabolism; Hepatitis B virus; Hepatitis B virus - growth & development; Hospitals; Host Cell; Human bone marrow mesenchymal stem cell; Humans; Infection; Liver cancer; Medical research; Mesenchymal Stromal Cells - virology; Physiological aspects; Public health; Replication; Science; Stem cells; Studies; Young Adult
• ISSN: 1743-422X; 1743-422X
• DOI: 10.1186/1743-422X-8-486

Hepatitis B virus (HBV) infection is a blood borne infectious disease that affects the liver. Human bone marrow mesenchymal stem cells (BMSCs) may serve as a cell source for adult stem cell transplantation in liver repair. However, the susceptibility of human BMSCs to HBV infection is poorly understood. The aim of this study was to investigate the infection and replication of HBV in cultures of human BMSCs. Human BMSCs were confirmed using flow cytometry. Intracellular HBV DNA was detected at d 2 after infection and maintained at relatively high levels from d 6 to d 12. The maximal level of intracellular HBV DNA was 9.37 × 105 copies/mL. The extracellular HBV DNA was observed from d 3 to d 15, and the levels ranged from 3.792 × 102 copies/mL to 4.067 × 105 copies/mL. HBsAg in the culture medium was detected from d 2 to d 16. HBeAg secretion was positive from d 5 to d 13. HBcAg constantly showed positive signals in approximately 7%-20% of BMSCs from 2 days after exposure. Intracellular HBV covalently closed circular DNA (cccDNA) could be detected as early as 2 days postinfection, and strong signals were obtained with increasing time. HBV can infect and replicate in human BMSCs. Human BMSCs may be a useful tool for investigating HBV life-cycle and the mechanism of initial virus-cell interactions.