Modeling memory B cell responses in a lymphoid organ-chip to evaluate mRNA vaccine boosting

Abstract excerpt

Predicting the immunogenicity of candidate vaccines in humans remains a challenge. To address this issue, we developed a lymphoid organ-chip (LO chip) model based on a microfluidic chip seeded with human PBMC at high density within a 3D collagen matrix. Perfusion of the SARS-CoV-2 spike protein mimicked a vaccine boost by inducing a massive amplification of spike-specific memory B cells, plasmablast...

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