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Open Access Generation of a liver targeting fusion interferon and its bioactivity analysis in vitro

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The objective of this study was to generate a liver targeting fusion interferon, galactosyl-human serum albumin-interferon 2b (G-HSA-IFN) and to evaluate its bioactivity in vitro on HepG2.2.15 cells which express hepatitis B surface antigen (HBsAg) and hepatitis B e antigen (HBeAg). The cell proliferation was determined by Sulpho Rhodamine B (SRB) staining method and flow cytometry (FCM) assay. Hochest33342 and Propidium Iodide (PI) double staining and Western blot analysis of Bcl-2/Bax were also performed to evaluate cell lethality and apoptosis. The concentrations of HBsAg and HBeAg secreted in culture supernatant were detected using Enzyme-Linked Immunosorbent Assay (ELISA). The results demonstrated that G-HSA-IFN could inhibit the proliferation of HepG2.2.15 cells and the cell cycle was arrested at G0/G1 phase. Western blotting results showed that the expression of Bcl-2 was inhibited in a dose-dependent manner while the expression of Bax was enhanced. The expression of HBsAg was inhibited by G-HSA-IFN in a dose-dependent manner, while no significant inhibiting effect on the expression of HBeAg was observed. Conclusively, G-HSA-IFN could not only significantly inhibit the HBsAg expression and the proliferation of HepG2.2.15 cells, but also induce the apoptosis of the target cells, rendering it a promising drug candidate for hepatitis B.

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Document Type: Research Article

Publication date: 2011-10-01

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  • Pharmazie is a leading journal in the field of pharmaceutical sciences. As a peer-reviewed scientific journal, Pharmazie is regularly indexed in the relevant databases like Web of science, Journal Citation Reports and many others. The journal is open for submissions from the whole spectrum of pharnaceutical sciences including Pharmaceutical Chemistry, Experimental and Clinical Pharmacology, Drug Analysis, Pharmaceutics, Pharmaceutical Biology, Clinical Pharmacy etc.
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