T cell response to cholera infection
Poster Apr 01, 2009
Natural Vibrio cholerae infection generates a robust B-cell response that wanes for T-cell independent antigens, suggesting that B-cell responses may be mediated in a T-cell dependent manner. Patients with cholera develop a memory-effector T-cell response to cholera antigens, and B-cell activation occurs after T-cell population expansion, suggesting that T-cells may play an important role in the development and maintenance of memory B-cell responses to T-cell dependent antigens.
We found a distinct subpopulation of Tregs within BMSCs. Tregs and BMSCs in co-culture conferred neuroprotection that varied in a dose-dependent manner. Tregs minimized stem cell production of IL-6, a pro-inflammatory cytokine, and inhibited BMSC secretion of FGF-beta, a cytokine related to BMSC proliferation and differentiation. The ratio of Tregs found natively in BMSCs is optimally adapted to provide the maximum neuroprotective benefit of stem cell treatment after ischemic stroke.READ MORE
Patients with partial deficiency of recombination-activating genes 1 or 2 (RAG1/2) can present with a wide spectrum of primary immunodeficiencies including combined immunodeficiency with granuloma and/or autoimmunity (CID-G/AI). Prior case reports have highlighted alterations in B and T cell compartments; however comprehensive characterization of these cell populations with focus on autoreactive-prone subsets has not been reported.READ MORE