TCR Repertoire Characterization for T Cells Expanded in Response to hRSV Infection in Mice Immunized with a Recombinant BCG Vaccine

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dc.contributor.authorRey-Jurado, Emma
dc.contributor.authorBohmwald, Karen
dc.contributor.authorCorrea, Hernan G.
dc.contributor.authorKalergis, Alexis M.
dc.date.accessioned2025-01-23T19:52:45Z
dc.date.available2025-01-23T19:52:45Z
dc.date.issued2020
dc.description.abstractT cells play an essential role in the immune response against the human respiratory syncytial virus (hRSV). It has been described that both CD4(+) and CD8(+) T cells can contribute to the clearance of the virus during an infection. However, for some individuals, such an immune response can lead to an exacerbated and detrimental inflammatory response with high recruitment of neutrophils to the lungs. The receptor of most T cells is a heterodimer consisting of alpha and beta chains (alpha beta TCR) that upon antigen engagement induces the activation of these cells. The alpha beta TCR molecule displays a broad sequence diversity that defines the T cell repertoire of an individual. In our laboratory, a recombinant Bacille Calmette-Guerin (BCG) vaccine expressing the nucleoprotein (N) of hRSV (rBCG-N-hRSV) was developed. Such a vaccine induces T cells with a Th1 polarized phenotype that promote the clearance of hRSV infection without causing inflammatory lung damage. Importantly, as part of this work, the T cell receptor (TCR) repertoire of T cells expanded after hRSV infection in naive and rBCG-N-hRSV-immunized mice was characterized. A more diverse TCR repertoire was observed in the lungs from rBCG-N-hRSV-immunized as compared to unimmunized hRSV-infected mice, suggesting that vaccination with the recombinant rBCG-N-hRSV vaccine triggers the expansion of T cell populations that recognize more viral epitopes. Furthermore, differential expansion of certain TCRV beta chains was found for hRSV infection (TCRV beta(+)8.3 and TCRV beta(+)5.1,5.2) as compared to rBCG-N-hRSV vaccination (TCRV beta(+)11 and TCRV beta(+)12). Our findings contribute to better understanding the T cell response during hRSV infection, as well as the functioning of a vaccine that induces a protective T cell immunity against this virus.
dc.fuente.origenWOS
dc.identifier.doi10.3390/v12020233
dc.identifier.eissn1999-4915
dc.identifier.urihttps://doi.org/10.3390/v12020233
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/100643
dc.identifier.wosidWOS:000521256600084
dc.issue.numero2
dc.language.isoen
dc.revistaViruses-basel
dc.rightsacceso restringido
dc.subjecthuman respiratory syncytial virus
dc.subjectrecombinant BCG vaccine
dc.subjectTCR repertoire
dc.subject.ods03 Good Health and Well-being
dc.subject.odspa03 Salud y bienestar
dc.titleTCR Repertoire Characterization for T Cells Expanded in Response to hRSV Infection in Mice Immunized with a Recombinant BCG Vaccine
dc.typeartículo
dc.volumen12
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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