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West Ashley Library
9 a.m. - 6 p.m.
Phone: (843) 766-6635
Wando Mount Pleasant Library
9 a.m. - 6 p.m.
Phone: (843) 805-6888
Village Library
9 a.m. - 6 p.m.
Phone: (843) 884-9741
St. Paul's/Hollywood Library
9 a.m. - 6 p.m.
Phone: (843) 889-3300
Otranto Road Library
9 a.m. - 6 p.m.
Phone: (843) 572-4094
Mt. Pleasant Library
9 a.m. - 6 p.m.
Phone: (843) 849-6161
McClellanville Library
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Keith Summey North Charleston Library
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John's Island Library
9 a.m. - 6 p.m.
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Hurd/St. Andrews Library
9 a.m. - 6 p.m.
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Folly Beach Library
9 a.m. - 1 p.m.
Phone: (843) 588-2001
Dorchester Road Library
9 a.m. - 6 p.m.
Phone: (843) 552-6466
John L. Dart Library
9 a.m. - 6 p.m.
Phone: (843) 722-7550
Bees Ferry West Ashley Library
9 a.m. - 6 p.m.
Phone: (843) 805-6892
Baxter-Patrick James Island
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Miss Jane's Building (Edisto Library Temporary Location)
Closed
Phone: (843) 869-2355
Edgar Allan Poe/Sullivan's Island Library
Closed for renovations
Phone: (843) 883-3914
Main Library
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Phone: (843) 805-6930
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Phone: (843) 805-6909
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Rickettsia Vaccine Candidate pVAX1-OmpB24 Stimulates TCD4+INF-γ+ and TCD8+INF-γ+ Lymphocytes in Autologous Co-Culture of Human Cells.
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- Author(s): Dzul-Rosado, Karla; Donis-Maturano, Luis; Arias-León, Juan; Machado-Contreras, Jesús; Valencia-Pacheco, Guillermo; Panti-Balam, Candi; Balam-Romero, Javier; Ku-González, Angela; Peniche-Lara, Gaspar; Mosqueda, Juan; Zazueta, Oscar E.; Lugo-Caballero, Cesar; Puerto-Manzano, Fernando
- Source:
Vaccines; Jan2023, Vol. 11 Issue 1, p173, 13p- Subject Terms:
- Source:
- Additional Information
- Abstract: Background: In recent years, promising vaccination strategies against rickettsiosis have been described in experimental animal models and human cells. OmpB is considered an immunodominant antigen that is recognized by T and B cells. The aim of this study was to identify TCD4+INF-γ+ and TCD8+INF-γ+ lymphocytes in an autologous system with macrophages transfected with the vaccine candidate pVAX1-OmpB24. Lymphocytes and monocytes from 14 patients with Rickettsia were isolated from whole blood. Monocytes were differentiated into macrophages and transfected with the plasmid pVAX1-OmpB24 pVax1. Isolated lymphocytes were cultured with transfected macrophages. IFN-γ-producing TCD4+ and TCD8+ lymphocyte subpopulations were identified by flow cytometry, as was the percentage of macrophages expressing CD40+, CD80+, HLA-I and HLA-II. Also, we analyzed the exhausted condition of the T lymphocyte subpopulation by PD1 expression. Macrophages transfected with pVAX1-OmpB24 stimulated TCD4+INF-γ+ cells in healthy subjects and patients infected with R. typhi. Macrophages stimulated TCD8+INF-γ+ cells in healthy subjects and patients infected with R. rickettsii and R. felis. Cells from healthy donors stimulated with OmpB-24 showed a higher percentage of TCD4+PD1+. Cells from patients infected with R. rickettsii had a higher percentage of TCD8+PD-1+, and for those infected with R. typhi the larger number of cells corresponded to TCD4+PD1+. Human macrophages transfected with pVAX1-OmpB24 activated TCD4+IFN-γ+ and CD8+IFN-γ+ in patients infected with different Rickettsia species. However, PD1 expression played an important role in the inhibition of T lymphocytes with R. felis. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of Vaccines is the property of MDPI and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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