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Deprecated: Implicit conversion from float 298.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Angew+Chem+Int+Ed+Engl 2021 ; 60 (17): 9467-9473 Nephropedia Template TP
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Sterilizing Immunity against SARS-CoV-2 Infection in Mice by a Single-Shot and Lipid Amphiphile Imidazoquinoline TLR7/8 Agonist-Adjuvanted Recombinant Spike Protein Vaccine* #MMPMID33464672
Jangra S; De Vrieze J; Choi A; Rathnasinghe R; Laghlali G; Uvyn A; Van Herck S; Nuhn L; Deswarte K; Zhong Z; Sanders NN; Lienenklaus S; David SA; Strohmeier S; Amanat F; Krammer F; Hammad H; Lambrecht BN; Coughlan L; Garcia-Sastre A; De Geest BG; Schotsaert M
Angew Chem Int Ed Engl 2021[Apr]; 60 (17): 9467-9473 PMID33464672show ga
The search for vaccines that protect from severe morbidity and mortality because of infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus that causes coronavirus disease 2019 (COVID-19) is a race against the clock and the virus. Here we describe an amphiphilic imidazoquinoline (IMDQ-PEG-CHOL) TLR7/8 adjuvant, consisting of an imidazoquinoline conjugated to the chain end of a cholesterol-poly(ethylene glycol) macromolecular amphiphile. It is water-soluble and exhibits massive translocation to lymph nodes upon local administration through binding to albumin, affording localized innate immune activation and reduction in systemic inflammation. The adjuvanticity of IMDQ-PEG-CHOL was validated in a licensed vaccine setting (quadrivalent influenza vaccine) and an experimental trimeric recombinant SARS-CoV-2 spike protein vaccine, showing robust IgG2a and IgG1 antibody titers in mice that could neutralize viral infection in vitro and in vivo in a mouse model.