Poly (lactic-co-glycolic acid) nanoparticle-based vaccines delivery systems as a novel adjuvant for H9N2 antigen enhance immune responses

Poultry Science

Yi Zhang¹  Saifuding Abula²  Tuerhong Kudereti³  Dandan Liu³  Telieke Ayihengbieke³  Adelijiang Wusiman³  Deyun Wang³  Xike Cheng³ 

[1] College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China;College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China;Xinjiang key laboratory of new drug study and creation for herbivorous animal (XJ-KLNDSCHA), College of Veterinary Medicine, Xinjiang Agricultural University, Urumqi, 830000, PR China;

关键词: alhagi honey polysaccharide;    pickering emulsion;    poly(lactic-co-glycolic acid) nanoparticles;    vaccine adjuvants;    immune response;   

DOI  :  

来源: DOAJ

【 摘 要 】

ABSTRACT: Poly (lactic-co-glycolic acid) (PLGA) nanoparticle used as vaccine adjuvants have been widely investigated due to their safety, antigen slow-release ability, and good adjuvants activity. In this study, immunopotentiator Alhagi honey polysaccharide encapsulated PLGA nanoparticles (AHPP) and assembled pickering emulsion with AHPP as shell and squalene as core (PPAS) were prepared. Characterization of AHPP and PPAS were investigated. H9N2 absorbed nanoparticles formulations were immunized to chicken, then the magnitude and kinetics of antibody and cellular immune responses were assessed. Our results showed that PPAS had rough strawberry-like surfaces, a large number of antigens could be absorbed on their surfaces through simple mixing. Adjuvant activity of PPAS showed that, PPAS/H9N2 can induce long-lasting and high HI titers, high thymus, spleen, and bursa of fabricius organ index. Moreover, chicken immunized with PPAS/H9N2 showed a mixed high differentiation of CD4+ and CD8a+ T cell, and strong Th1 and Th2-type cytokines mRNA expression. Thus, these findings demonstrated that PPAS could induce a strong and long-term cellular and humoral immune response, and has the potential to serve as an effective vaccine delivery adjuvant system for H9N2 antigen.

【 授权许可】

Unknown