6533b82efe1ef96bd12927df

RESEARCH PRODUCT

MPLA-coated hepatitis B virus surface antigen (HBsAg) nanocapsules induce vigorous T cell responses in cord blood derived human T cells.

Frederik R. WurmKeti PiradashviliMichael FichterAnette Pietrzak-nguyenLeah PretschStephan GehringKatharina LandfesterFred Zepp

subject

0301 basic medicineHBsAgHepatitis B virusT cellT-LymphocytesBiomedical EngineeringPharmaceutical ScienceMedicine (miscellaneous)Bioengineeringmedicine.disease_causeVirus03 medical and health sciences0302 clinical medicineImmune systemNanocapsulesmedicineHumansGeneral Materials ScienceHepatitis B VaccinesHepatitis B virusLiver infectionHepatitis B Surface Antigensbusiness.industryDendritic CellsHepatitis Bmedicine.diseaseFetal BloodHepatitis BVirology030104 developmental biologymedicine.anatomical_structureImmunologyAntigens SurfaceMolecular MedicinebusinessCD80030215 immunology

description

Chronic hepatitis B virus (HBV) infection is the most prevalent serious liver infection in the world. A frequent route of infection represents mother-to-child transmission. Efficient control of HBV replication depends on antigen-specific cellular immune response mediated by dendritic cells (DCs). Aim of the present study was to evaluate optimized adjuvant combinations, efficiently maturing monocyte-derived neonatal and adult dendritic cells (moDCs). In addition, the potential of polymeric HBsAg-nanocapsules (HBsAg-NCs) was investigated regarding up-take by moDCs and the subsequent induction of specific T cell responses in a human co-culture model. Simultaneous stimulation of moDCs with MPLA and IFNγ induced up-regulation of CD80 and HLA-DR along with vigorous secretion of IL-12p70. MPLA-coating of HBsAg-NCs promoted NCs-uptake by moDCs. Finally, MPLA-HBsAg-NCs-pulsed moDCs with IFNγ increased T cell proliferation and induced antigen-specific IFNγ release by T cells. The herein presented vaccine approach provides a rational for neonatal and therapeutic immunization strategies against HBV.

10.1016/j.nano.2016.07.010https://pubmed.ncbi.nlm.nih.gov/27516081