Skip to Content
MilliporeSigma
  • A novel vaccine adjuvant based on straight polyacrylate potentiates vaccine-induced humoral and cellular immunity in cynomolgus macaques.

A novel vaccine adjuvant based on straight polyacrylate potentiates vaccine-induced humoral and cellular immunity in cynomolgus macaques.

Human vaccines & immunotherapeutics (2021-01-12)
Vincent Pavot, Hélène Bisceglia, Florine Guillaume, Sandrine Montano, Linong Zhang, Florence Boudet, Jean Haensler
ABSTRACT

Adjuvants are central to the efficacy of subunit vaccines. Although several new adjuvants have been approved in human vaccines over the last decade, the panel of adjuvants in licensed human vaccines remains small. There is still a need for novel adjuvants that can be safely used in humans, easy to source and to formulate with a wide range of antigens and would be broadly applicable to a wide range of vaccines. In this article, using the Respiratory Syncytial Virus (RSV) nanoparticulate prefusion F model antigen developed by Sanofi, we demonstrate in the macaque model that the polyacrylate (PAA)-based adjuvant SPA09 is well tolerated and increases vaccine antigen-specific humoral immunity (sustained neutralizing antibodies, memory B cells and mucosal immunity) and elicits strong TH1-type responses (based on IFNγ and IL-2 ELISpots) in a dose-dependent manner. These data warrant further development of the SPA09 adjuvant for evaluation in clinical trials.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Sodium bicarbonate solution, solution (7.5%), sterile-filtered, BioReagent, suitable for cell culture
Sigma-Aldrich
Carbonate-Bicarbonate Buffer, capsule