August 22, 2019
The construction protocol of bio-nanocapsule (BNC)-based nanocarriers, named GL-BNC and GL-virosome, for targeted drug delivery to macrophages is described here. First, genes encoding the Streptococcus sp. protein G-derived C2 domain (binds to IgG Fc) and Finegoldia magna protein L-derived B1 domain (binds to Igκ light chain) are prepared by PCR amplification. Subsequently, the genes encoding hepatic cell-specific binding domain of hepatitis B virus envelope L protein are replaced by these PCR products. The expression plasmid for this fused gene (encoding GL-fused L protein) can be used to transform Saccharomyces cerevisiae AH22R− cells. To obtain GL-BNC, the transformed yeast cells are disrupted with glass beads, treated with heat, and then subjected to IgG affinity column chromatography followed by size exclusion column chromatography. In addition, GL-BNCs can be fused with liposomes to form GL-virosome. The targeted delivery of GL-BNC and GL-virosome to macrophages can be confirmed by in vitro phagocytosis assays using the murine macrophage cell line RAW264.7.
Publication - Abstract
Apr 16, 2018
Acta Biomaterialia
Macrophage hyperfunction or dysfunction is tightly associated with various diseases, such as osteoporosis, inflammatory disorder, and cancers. However, nearly all conventional drug delivery system (DDS) nanocarriers utilize endocytosis for ent...
Publication - Abstract
Feb 29, 2020
Biomaterials