tetano
Editor, Senior Moderator
ACS Synth Biol
. 2023 May 17.
doi: 10.1021/acssynbio.3c00020. Online ahead of print. Generation of a Live Attenuated Influenza A Vaccine Using Chemical-Triggered Intein
Ji Chen[SUP] 1 2 [/SUP], Jinyu Wang[SUP] 3 [/SUP], Hongyu Zhu[SUP] 1 4 [/SUP], Yang Zhang[SUP] 3 [/SUP], Jin Sun[SUP] 1 2 [/SUP], Wei Wang[SUP] 3 [/SUP], Congwen Wei[SUP] 2 [/SUP], Hui Zhong[SUP] 2 [/SUP], Mingxin Dong[SUP] 1 [/SUP]
Affiliations
Noticeable morbidity and mortality can be caused by influenza A virus in humans. Conventional live attenuated influenza vaccine (LAIV) is one of the main strategies to control the spread of influenza, but its protective efficacy is often limited by its suboptimal immunogenicity and safety. Therefore, a new type of LAIV that can overcome the shortage of existing vaccines is urgently needed. Here, we report a novel method to construct the recombinant influenza A virus (IAV) regulated by small molecules. By inserting 4-hydroxytamoxifen (4-HT)-dependent intein into the polymerase acidic (PA) protein of IAV, a series of 4-HT-dependent recombinant viruses were generated and screened. Among them, the S218 recombinant virus strain showed excellent 4-HT dependent replication characteristics both in vitro and in vivo. Further immunological evaluation indicated that the 4-HT-dependent viruses were highly attenuated in the host and could elicit robust humoral, mucosal, and cellular immunity against the challenge of homologous viruses. The attenuated strategies presented here could also be broadly applied to the development of vaccines against other pathogens.
Keywords: 4-hydroxytamoxifen; influenza A virus; intein self-splicing; live attenuated vaccine.
. 2023 May 17.
doi: 10.1021/acssynbio.3c00020. Online ahead of print. Generation of a Live Attenuated Influenza A Vaccine Using Chemical-Triggered Intein
Ji Chen[SUP] 1 2 [/SUP], Jinyu Wang[SUP] 3 [/SUP], Hongyu Zhu[SUP] 1 4 [/SUP], Yang Zhang[SUP] 3 [/SUP], Jin Sun[SUP] 1 2 [/SUP], Wei Wang[SUP] 3 [/SUP], Congwen Wei[SUP] 2 [/SUP], Hui Zhong[SUP] 2 [/SUP], Mingxin Dong[SUP] 1 [/SUP]
Affiliations
- PMID: 37196336
- DOI: 10.1021/acssynbio.3c00020
Noticeable morbidity and mortality can be caused by influenza A virus in humans. Conventional live attenuated influenza vaccine (LAIV) is one of the main strategies to control the spread of influenza, but its protective efficacy is often limited by its suboptimal immunogenicity and safety. Therefore, a new type of LAIV that can overcome the shortage of existing vaccines is urgently needed. Here, we report a novel method to construct the recombinant influenza A virus (IAV) regulated by small molecules. By inserting 4-hydroxytamoxifen (4-HT)-dependent intein into the polymerase acidic (PA) protein of IAV, a series of 4-HT-dependent recombinant viruses were generated and screened. Among them, the S218 recombinant virus strain showed excellent 4-HT dependent replication characteristics both in vitro and in vivo. Further immunological evaluation indicated that the 4-HT-dependent viruses were highly attenuated in the host and could elicit robust humoral, mucosal, and cellular immunity against the challenge of homologous viruses. The attenuated strategies presented here could also be broadly applied to the development of vaccines against other pathogens.
Keywords: 4-hydroxytamoxifen; influenza A virus; intein self-splicing; live attenuated vaccine.