The interaction of aluminium-based adjuvants with THP-1 macrophages in vitro: Implications for cellular survival and systemic translocation.

The interaction of aluminium-based adjuvants with THP-1 macrophages in vitro: Implications for cellular survival and systemic translocation. J Inorg Biochem. 2019 Nov 12;203:110915 Authors: Shardlow E, Mold M, Exley C Abstract Within clinical vaccinations, recombinant antigens are routinely entrapped inside or adsorbed onto the surface of aluminium salts in order to increase their immunological potency in vivo. The efficacy of these immunisations is highly dependent upon the recognition and uptake of these complexes by professional phagocytes and their subsequent delivery to the draining lymph nodes for further immunological processing. While monocytes have been shown to internalise aluminium adjuvants and their adsorbates, the role of macrophages in this respect has not been fully established. Furthermore, this study explored the interaction of THP-1 macrophages with aluminium-based adjuvants (ABAs) and how this relationship influenced the survival of such cells in vitro. THP-1 macrophages were exposed to low concentrations of ABAs (1.7 μg/mL Al) for a maximum of seven days. ABA uptake was determined using lumogallion staining and cell viability by both DAPI (4',6-diamidino-2-phenylindole) staining and LDH (lactate dehydrogenase) assay. Evidence of ABA particle loading was identified within cells at early junctures following treatment and appeared to be quite prolific (>90% cells positive for Al signal after 24 h). Total sam...
Source: Journal of Inorganic Biochemistry - Category: Biochemistry Authors: Tags: J Inorg Biochem Source Type: research