Farag, Mohamed M. S. and Peschel, Georg and Mueller, Martina and Weigand, Kilian (2019) Characterization Of The Interaction Between Subviral Particles Of Hepatitis B Virus And Dendritic Cells - In Vitro Study. INFECTION AND DRUG RESISTANCE, 12. pp. 3125-3135. ISSN 1178-6973,
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Background: During an infection with hepatitis B virus (HBV), infectious particles (Dane particles) can be detected in addition to aggregates of the subviral particles (SVP) which is considered an immune escaping mechanism for the virus. Dendritic cells (DCs) are a specialized type of antigen-presenting cell (APC) that can activate native T-cells to prime an immune response controlling HBV infection. The aim of this study was to characterize the interaction between HBVsvp and DCs in vitro. Methods: HBVsvp that comprises surface and core proteins were produced in vitro by HepG2.2.15 as a culturing system; DCs derived from the bone marrow of mice were pulsed by HBVsvp. A different pattern of cytokines secreted by bone-marrow-derived dendritic cells from C56BL/6 mice pulsed with HBVsvp were analyzed. The interactions between HBVsvp and DCs were characterized using FACS analysis, protein assay, Western blot, and immunofluorescence staining. Results: Pulsation of DCs with HBVsvp resulted in strong activation and higher secretion of DC cytokines including INF-alpha, INF-gamma, TNF-alpha, IL-1 alpha, IL-10, and IL-12; but not for IL-1 beta, IL-2, IL-6, and IL-15. The production of CXCL-10/IP-10 was increased during the observation period and reached the maximal secretion after 24 hrs (p < 0.001). In total protein assay, we found significantly higher protein concentration in HBVsvp stimulated DC groups compared to not activated DCs (p < 0.001). Both 24 kDa small surface antigen (HBVs) and the 21 kDa core protein (HBVc) were detected in activated DCs. For DCs immunofluorescence staining, our data showed clear differences in the morphology of DCs between negative control and those pulsed with HBVsvp. Conclusion: Result demonstrates a significant complex interaction between HBVsvp and DCs, in vitro.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | IMPAIRED FUNCTION; IMMUNE-RESPONSE; VIRAL CLEARANCE; INFECTION; IMMUNIZATION; EXPRESSION; HBV; MECHANISMS; INDUCTION; MONOCYTES; dendritic cell-based therapy; cytokines; hepatitis B virus subviral particles |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Innere Medizin I |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 21 Apr 2020 05:57 |
| Last Modified: | 21 Apr 2020 05:57 |
| URI: | https://pred.uni-regensburg.de/id/eprint/27774 |
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