Polymerised superparamagnetic antigen presenting cell lymphocyte capture for enriching tumour reactive T-cells and neoantigen identification.

Ultrasensitive antigen recognition between T lymphocytes and cognate targets via immunological synapse (IS) formation enables live cell-based antigen-specific T cell detection. However, unpredictable antigen processing and major histocompatibility complex (MHC) turnover limit specificity. Here, intracellularly polymerized antigen-presenting cells (pAPCs) are developed for modular, persistent antigen display via kinetically driven loading.

Lymph Node Follicle-Targeting STING Agonist Nanoshells Enable Single-Shot M2e Vaccination for Broad and Durable Influenza Protection.

The highly conserved matrix protein 2 ectodomain (M2e) of influenza viruses presents a compelling vaccine antigen candidate for stemming the pandemic threat of the mutation-prone pathogen, yet the low immunogenicity of the diminutive M2e peptide renders vaccine development challenging. A highly potent M2e nanoshell vaccine that confers broad and durable influenza protectivity under a single vaccination is shown. Prepared via asymmetric ionic stabilization for nanoscopic curvature formation, polymeric nanoshells co-encapsulating high densities of M2e peptides and stimulator of interferon genes (STING) agonists are prepared.