Skip to main content

Advertisement

Log in

A LAG3-interfering oligonucleotide acts as an adjuvant to enhance the antibody responses induced by recombinant protein vaccines and inactivated influenza virus vaccines

  • Biotechnological products and process engineering
  • Published:
Applied Microbiology and Biotechnology Aims and scope Submit manuscript

Abstract

Lymphocyte activation gene-3 (LAG3) is a transmembrane protein expressed on activated T cells and delivers inhibitory signals to render the T cells unable to effectively help B cells to produce antibodies to microbes and vaccines. Presumably, antagonizing LAG3 could enhance the antibody responses to vaccines, and LAG3 antagonists could facilitate vaccines to induce vigorous antibody responses. In this study, we designed a LAG3-interfering antisense oligonucleotide, designated as LIO-1. The LIO-1 is complementary to an identical region shared in human and mouse LAG3 mRNA. We demonstrated that LIO-1 induced the degradation of LAG3 mRNA in immune cells, decreased the LAG3 expression on CD4+ T cells, maintained the prolonged proliferation and promoted the activation of antigen-specific CD4+ T cells, and increased the production of IFN-γ, IL-2, and IL-6 in the antigen re-stimulated immune cells. In addition, we found that LIO-1 enhanced the antibody responses induced by ISA35-formulated recombinant antigen vaccine or ISA35-formulated inactivated influenza virus vaccines in mice. Thus, the LIO-1, a nucleic acid LAG3 antagonist, could facilitate vaccines to induce vigorous antibody responses and has the possibility to be used as a novel adjuvant.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6

Similar content being viewed by others

References

Download references

Funding

This study is financially supported by the National Nature Scientific Foundation of China (31670937).

Author information

Authors and Affiliations

Authors

Corresponding authors

Correspondence to Yongli Yu or Liying Wang.

Ethics declarations

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All animal experimental procedures were performed in accordance with guidelines of the Animal Ethical and Experimental Committee of Jilin University.

Additional information

Publisher’s note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Li, Z., Song, Y., Cui, C. et al. A LAG3-interfering oligonucleotide acts as an adjuvant to enhance the antibody responses induced by recombinant protein vaccines and inactivated influenza virus vaccines. Appl Microbiol Biotechnol 103, 6543–6557 (2019). https://doi.org/10.1007/s00253-019-09919-4

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00253-019-09919-4

Keywords

Navigation