A Novel Polymer Nanoparticle Polydimethyl Diallyl Ammonium Chloride as An Adjuvant Enhances the Immune Response of SARS-CoV-2 Subunit Vaccine

© 2024 Wiley-VCH GmbH..

The Coronavirus Disease 2019 (COVID-19) pandemic caused by SARS-CoV-2 has a significant impact on global health and the economy. It has underscored the urgent need for a stable, easily produced and effective vaccine. This study presents a novel approach using SARS-CoV-2 spike (S) protein-conjugated nanoparticles (NPs) in combination with cyclic GMP-AMP (cGAMP) (S-NPs-cGAMP) as a subunit vaccine. When mice are immunized, the antiserum of S-NPs-cGAMP group exhibits a 16-fold increase in neutralizing activity against a pseudovirus, compared to S protein group. Additionally, S-NPs-cGAMP induces even higher levels of neutralizing antibodies. Remarkably, the vaccine also triggers a robust humoral immune response, as evidenced by a notable elevation in virus-specific IgG and IgM antibodies. Furthermore, after 42 days of immunization, there is an observed increase in specific immune cell populations in the spleen. CD3+ CD4+ and CD3+ CD8+ T lymphocytes, as well as B220+ CD19+ and CD3- CD49b+ NK lymphocytes, show an upward trend, indicating a positive cellular immune response. Moreover, the S-NPs-cGAMP demonstrates promising results against the Delta strain and exhibits good cross-neutralization potential against other variants. These findings suggest that pDMDAAC NPs is potential adjuvant and could serve as a versatile platform for future vaccine development.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - year:2024

Enthalten in:

Advanced healthcare materials - (2024) vom: 04. März, Seite e2304575

Sprache:

Englisch

Beteiligte Personen:

Ren, Lili [VerfasserIn]
Ouyang, Chengcheng [VerfasserIn]
Zhao, Shuqing [VerfasserIn]
Zheng, Qiqi [VerfasserIn]
Guo, Weilu [VerfasserIn]
Fan, Baochao [VerfasserIn]
Zhou, Jinzhu [VerfasserIn]
Zhang, Wei [VerfasserIn]
Hu, Mi [VerfasserIn]
Li, Jizong [VerfasserIn]
Li, Bin [VerfasserIn]

Links:

Volltext

Themen:

Adjuvant
Journal Article
Polydimethyl diallyl ammonium chloride
SARS-CoV-2
Subunit vaccine

Anmerkungen:

Date Revised 10.03.2024

published: Print-Electronic

Citation Status Publisher

doi:

10.1002/adhm.202304575

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM369265327