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A molecular signature of lung-resident CD8+ T cells elicited by subunit vaccination.


ABSTRACT: Natural infection as well as vaccination with live or attenuated viruses elicit tissue resident, CD8+ memory T cell (Trm) response. Trm cells so elicited act quickly upon reencounter with the priming agent to protect the host. These Trm cells express a unique molecular signature driven by the master regulators-Runx3 and Hobit. We previously reported that intranasal instillation of a subunit vaccine in a prime boost vaccination regimen installed quick-acting, CD8+ Trm cells in the lungs that protected against lethal vaccinia virus challenge. It remains unexplored whether CD8+ Trm responses so elicited are driven by a similar molecular signature as those elicited by microbes in a real infection or by live, attenuated pathogens in conventional vaccination. We found that distinct molecular signatures distinguished subunit vaccine-elicited lung interstitial CD8+ Trm cells from subunit vaccine-elicited CD8+ effector memory and splenic memory T cells. Nonetheless, the transcriptome signature of subunit vaccine elicited CD8+ Trm resembled those elicited by virus infection or vaccination. Clues to the basis of tissue residence and function of vaccine specific CD8+ Trm cells were found in transcripts that code for chemokines and chemokine receptors, purinergic receptors, and adhesins when compared to CD8+ effector and splenic memory T cells. Our findings inform the utility of protein-based subunit vaccination for installing CD8+ Trm cells in the lungs to protect against respiratory infectious diseases that plague humankind.

SUBMITTER: Suryadevara N 

PROVIDER: S-EPMC9645351 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature

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A molecular signature of lung-resident CD8<sup>+</sup> T cells elicited by subunit vaccination.

Suryadevara Naveenchandra N   Kumar Amrendra A   Ye Xiang X   Rogers Meredith M   Williams John V JV   Wilson John T JT   Karijolich John J   Joyce Sebastian S  

Scientific reports 20221109 1


Natural infection as well as vaccination with live or attenuated viruses elicit tissue resident, CD8<sup>+</sup> memory T cell (Trm) response. Trm cells so elicited act quickly upon reencounter with the priming agent to protect the host. These Trm cells express a unique molecular signature driven by the master regulators-Runx3 and Hobit. We previously reported that intranasal instillation of a subunit vaccine in a prime boost vaccination regimen installed quick-acting, CD8<sup>+</sup> Trm cells  ...[more]

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