Abstract

To investigate the impact of different 5ʹ untranslated regions (UTRs) on mRNA vaccine translation efficiency, five dual-reporter gene expression plasmids with different 5ʹUTRs were constructed. The corresponding mRNA transcripts were transcribed and capped in vitro. By comparing the expression levels of reporter genes with different 5ʹUTRs, we identified the 5ʹUTR associated with the highest expression level. Subsequently, HIVgp145 mRNA vaccines containing various 5ʹUTRs were constructed and verified. The results demonstrated that mRNA 3 (β-globin 5ʹUTR) displayed the greatest number of green fluorescence-positive cells and the highest luciferase fluorescence intensity in the reporter gene expression system. Further, among the HIVgp145 mRNA vaccines with different 5ʹUTRs, mRNA 7 (β-globin 5ʹUTR) exhibited the highest level of expression. These findings indicate that it is feasible to use the 5ʹUTR of β-globin in an mRNA vaccine, laying the foundation for animal immunogenicity testing.

Details

Title
Optimization of the 5ʹ untranslated region of mRNA vaccines
Author
Ma, Qi 1 ; Zhang, Xiaoguang 1 ; Yang, Jing 1 ; Li, Hongxia 1 ; Hao, Yanzhe 1 ; Feng, Xia 1 

 Chinese Center for Disease Control and Prevention, National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Viral Disease Control and Prevention, Beijing, China (GRID:grid.198530.6) (ISNI:0000 0000 8803 2373) 
Pages
19845
Publication year
2024
Publication date
2024
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
3097630169
Copyright
© The Author(s) 2024. This work is published under http://creativecommons.org/licenses/by-nc-nd/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.