{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,26]],"date-time":"2025-12-26T07:14:27Z","timestamp":1766733267643,"version":"build-2065373602"},"reference-count":39,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2020,2,20]],"date-time":"2020-02-20T00:00:00Z","timestamp":1582156800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002850","name":"Fondo Nacional de Desarrollo Cient\u00edfico y Tecnol\u00f3gico","doi-asserted-by":"publisher","award":["1190830","3180570","3160249"],"award-info":[{"award-number":["1190830","3180570","3160249"]}],"id":[{"id":"10.13039\/501100002850","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Viruses"],"abstract":"<jats:p>T 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 \u03b1 and \u03b2 chains (\u03b1\u03b2TCR) that upon antigen engagement induces the activation of these cells. The \u03b1\u03b2TCR molecule displays a broad sequence diversity that defines the T cell repertoire of an individual. In our laboratory, a recombinant Bacille Calmette\u2013Gu\u00e9rin (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 na\u00efve 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\u03b2 chains was found for hRSV infection (TCRV\u03b2+8.3 and TCRV\u03b2+5.1,5.2) as compared to rBCG-N-hRSV vaccination (TCRV\u03b2+11 and TCRV\u03b2+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.<\/jats:p>","DOI":"10.3390\/v12020233","type":"journal-article","created":{"date-parts":[[2020,2,21]],"date-time":"2020-02-21T08:59:47Z","timestamp":1582275587000},"page":"233","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["TCR Repertoire Characterization for T Cells Expanded in Response to hRSV Infection in Mice Immunized with a Recombinant BCG Vaccine"],"prefix":"10.3390","volume":"12","author":[{"given":"Emma","family":"Rey-Jurado","sequence":"first","affiliation":[{"name":"Millennium Institute on Immunology and Immunotherapy, Departamento de Gen\u00e9tica Molecular y Microbiolog\u00eda, Facultad de Ciencias Biol\u00f3gicas, Pontificia Universidad Cat\u00f3lica de Chile, Santiago 8331010, Chile"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Karen","family":"Bohmwald","sequence":"additional","affiliation":[{"name":"Millennium Institute on Immunology and Immunotherapy, Departamento de Gen\u00e9tica Molecular y Microbiolog\u00eda, Facultad de Ciencias Biol\u00f3gicas, Pontificia Universidad Cat\u00f3lica de Chile, Santiago 8331010, Chile"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hern\u00e1n G.","family":"Correa","sequence":"additional","affiliation":[{"name":"Millennium Institute on Immunology and Immunotherapy, Departamento de Gen\u00e9tica Molecular y Microbiolog\u00eda, Facultad de Ciencias Biol\u00f3gicas, Pontificia Universidad Cat\u00f3lica de Chile, Santiago 8331010, Chile"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alexis M.","family":"Kalergis","sequence":"additional","affiliation":[{"name":"Millennium Institute on Immunology and Immunotherapy, Departamento de Gen\u00e9tica Molecular y Microbiolog\u00eda, Facultad de Ciencias Biol\u00f3gicas, Pontificia Universidad Cat\u00f3lica de Chile, Santiago 8331010, Chile"},{"name":"Departamento de Endocrinolog\u00eda, Escuela de Medicina, Facultad de Medicina, Pontificia Universidad Cat\u00f3lica de Chile, Santiago 8331010, Chile"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2020,2,20]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1545","DOI":"10.1016\/S0140-6736(10)60206-1","article-title":"Global burden of acute lower respiratory infections due to respiratory syncytial virus in young children: A systematic review and meta-analysis","volume":"375","author":"Nair","year":"2010","journal-title":"Lancet"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"332","DOI":"10.1046\/j.1365-2249.2000.01297.x","article-title":"Predominant type-2 response in infants with respiratory syncytial virus (rsv) infection demonstrated by cytokine flow cytometry","volume":"121","author":"Bendelja","year":"2000","journal-title":"Clin. 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