Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Medicine and Health Sciences
Regulation Of Mucosal Innate And Adaptive Immune Responses To Commensal Microbiota, Ting Feng
Regulation Of Mucosal Innate And Adaptive Immune Responses To Commensal Microbiota, Ting Feng
All ETDs from UAB
Host immune responses to the commensal microbiota are tightly controlled. Multiple levels of regulation reinforce intestinal homeostasis, including regulation by mucosal dendritic cells (DCs), regulatory T (Treg) cells, and the microbiota itself. However, the mechanisms involved are still largely unknown. Our current studies indicate that mucosal DCs originate and develop in the bone marrow, the latter of which is driven by retinoic acid (RA). Bone marrow cells express the RA-synthesizing enzyme ALDH, and provide RA to DC precursors in the bone marrow niche. RA induces DCs to express gut-homing CCR9 and ALDH1a2, and endows them with the ability to promote …
Development Of A Mucosal Vaccine Protective Against Francisella Tularensis Infection, Amit R. Ashtekar
Development Of A Mucosal Vaccine Protective Against Francisella Tularensis Infection, Amit R. Ashtekar
All ETDs from UAB
Francisella tularensis, a facultative intracellular, gram-negative coccobacillus, is the causative agent of tularemia and has been classified as a category A biological agent. Since there currently is no licensed vaccine available, in this study, we assessed the potential of a bivalent subunit vaccine comprising of DnaK and Tul4 to protect against respiratory tularemia. Intranasal immunization of C57BL/6 mice with DnaK, Tul4, and the adjuvant GPI-0100 resulted in mucosal and systemic antibody responses to DnaK and Tul4. In addition to antibody responses, this immunization regimen also induced both Th1 and Th2 cell-mediated immune responses specific for DnaK and Tul4. Finally, more …