Importance of NK Cells in Cellular and Humoral Responses Triggered by Pneumococcus Vaccination

dc.contributor.authorGazi, Umut
dc.contributor.authorTosun, Özgür
dc.contributor.authorDerici, Mehmet Kürşat
dc.contributor.authorKarasartova, Djursun
dc.contributor.authorGüreser, Ayşe Semra
dc.contributor.authorTaylan Özkan, Hikmet Ayşegül
dc.date.accessioned2024-01-26T06:26:35Z
dc.date.available2024-01-26T06:26:35Z
dc.date.issued2023en_US
dc.departmentHitit Üniversitesi, Tıp Fakültesi, Temel Tıp Bilimleri Bölümü
dc.description.abstractIntroduction: Despite the success of vaccination in reducing overall rate of pneumococcal pneumonia, Streptococcus pneumoniae is still held responsible for high mortality and modality rates worldwide. Our study aimed to investigate the potential role played by NK cells in immune response generated by pneumococcal vaccination, which could contribute to the development of more effective vaccines. Methods: The study included mice with and without NK cell depletion which were immunized with pneumococcus polysaccharide-conjugated vaccine followed by pneumococcus polysaccharide vaccine (PPV). Serum samples and splenocytes were collected from mice sacrificed 4 weeks after the last PPV dose. Serum samples were used for antibody level quantification by ELISA assay, while splenocytes were treated with PPV in vitro before monitoring CD4+ T-cell subsets (TH1, TH2, and TH17) and cytokine (IFN-?, IL-4, and IL-17) secretion levels by flow cytometry and ELISA analysis, respectively. Results: Results demonstrated reduced pneumococcal IgG and TH1 cell levels due to NK cell depletion. Nevertheless, in contrast to these observations, IFN-? secretion levels after in vitro PPV-23 treatment of splenocytes did not exhibit any statistically significant difference between the two mice groups. Conclusions: The data indicate a positive contribution of NK cells to both T-cell and B-cell responses triggered against pneumococcal vaccination. Further studies are required to confirm our data and investigate the potential benefit of NK cell targeting in promoting vaccine efficacy, especially in the elderly population who continues to be affected significantly by pneumococcal pneumonia.
dc.description.provenanceSubmitted by Zeynep Umut NARİN (umutarslan@hitit.edu.tr) on 2024-01-26T06:26:11Z No. of bitstreams: 1 ayse-semra-gureser2023.pdf: 1206054 bytes, checksum: 69536174baf5081a6a5ba41ba3566a41 (MD5)en
dc.description.provenanceApproved for entry into archive by Zeynep Umut NARİN (umutarslan@hitit.edu.tr) on 2024-01-26T06:26:35Z (GMT) No. of bitstreams: 1 ayse-semra-gureser2023.pdf: 1206054 bytes, checksum: 69536174baf5081a6a5ba41ba3566a41 (MD5)en
dc.description.provenanceMade available in DSpace on 2024-01-26T06:26:35Z (GMT). No. of bitstreams: 1 ayse-semra-gureser2023.pdf: 1206054 bytes, checksum: 69536174baf5081a6a5ba41ba3566a41 (MD5) Previous issue date: 2023en
dc.identifier.citationGazi, U., Tosun, O., Derici, K., Karasartova, D., & Gureser, S. (2023). Importance of NK Cells in Cellular and Humoral Responses Triggered by Pneumococcus Vaccination. International Archives of Allergy and Immunology, 1-8.
dc.identifier.doi10.1159/000535562
dc.identifier.issn1018-2438
dc.identifier.issn1423-0097
dc.identifier.pmid38151005
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1159/000535562
dc.identifier.urihttps://hdl.handle.net/11491/8746
dc.identifier.wosWOS:001133513100001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.institutionauthorKarasartova, Djursun
dc.institutionauthorGüreser, Ayşe Semra
dc.language.isoen
dc.publisherKARGER
dc.relation.ispartofInternational Archives of Allergy and Immunology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectStreptococcus pneumoniaeen_US
dc.subjectNK cellsen_US
dc.subjectVaccinationen_US
dc.subjectTH1en_US
dc.subjectIgGen_US
dc.titleImportance of NK Cells in Cellular and Humoral Responses Triggered by Pneumococcus Vaccination
dc.typeArticle

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