The T cell repertoire is composed of two distinct properties - the recognition specificity of the TCR heterodimer and the functional response of the cell after TCR stimulation. It is now clear that once a particular TCR heterodimer is expressed on the T cell surface, the antigen specificity is frozen for all the clonal progeny of that cell. The functional responses available, however, are quite extensive and range from programmed cell death to initiation of distinct modalities of active immune response. This proposal is designed to elucidate the mechanisms that determine the selection among possible functional responses and the clonal stability of such selection events in vivo. The experimental approach will be to examine the in vivo responses and long-term fate of antigen-specific alpha beta-TCR transgenic T cells transferred into normal mice using sensitive, single-cell analytical methods. A central focus will be the comparisons of naive versus antigen-experienced T cells following in vivo antigen responses initated by defined modes of antigen delivery. The broad long-term objective of this study is to determine the in vivo interactions that determine the functional activity of T cells so that these interactions can be altered to achieve more clinically useful immune responses (or lack of immune responses) in clinical medicine.

Agency
National Institute of Health (NIH)
Institute
National Institute of Allergy and Infectious Diseases (NIAID)
Type
Exploratory/Developmental Grants (R21)
Project #
2R21AI035783-04
Application #
2649905
Study Section
Immunobiology Study Section (IMB)
Project Start
1994-05-01
Project End
1998-09-29
Budget Start
1997-09-30
Budget End
1998-09-29
Support Year
4
Fiscal Year
1997
Total Cost
Indirect Cost
Name
University of Alabama Birmingham
Department
Pathology
Type
Schools of Dentistry
DUNS #
004514360
City
Birmingham
State
AL
Country
United States
Zip Code
35294
Balasubramani, Anand; Winstead, Colleen J; Turner, Henrietta et al. (2014) Deletion of a conserved cis-element in the Ifng locus highlights the role of acute histone acetylation in modulating inducible gene transcription. PLoS Genet 10:e1003969
Chewning, Joseph H; Zhang, Weiwei; Randolph, David A et al. (2013) Allogeneic Th1 cells home to host bone marrow and spleen and mediate IFN?-dependent aplasia. Biol Blood Marrow Transplant 19:876-87
Palmer, Matthew T; Lee, Yun Kyung; Maynard, Craig L et al. (2011) Lineage-specific effects of 1,25-dihydroxyvitamin D(3) on the development of effector CD4 T cells. J Biol Chem 286:997-1004
Balasubramani, Anand; Shibata, Yoichiro; Crawford, Gregory E et al. (2010) Modular utilization of distal cis-regulatory elements controls Ifng gene expression in T cells activated by distinct stimuli. Immunity 33:35-47
Balasubramani, Anand; Mukasa, Ryuta; Hatton, Robin D et al. (2010) Regulation of the Ifng locus in the context of T-lineage specification and plasticity. Immunol Rev 238:216-32
Schraml, Barbara U; Hildner, Kai; Ise, Wataru et al. (2009) The AP-1 transcription factor Batf controls T(H)17 differentiation. Nature 460:405-9
Chewning, Joseph H; Dugger, Kari J; Chaudhuri, Tandra R et al. (2009) Bioluminescence-based visualization of CD4 T cell dynamics using a T lineage-specific luciferase transgenic model. BMC Immunol 10:44
Weaver, Casey T; Hatton, Robin D (2009) Interplay between the TH17 and TReg cell lineages: a (co-)evolutionary perspective. Nat Rev Immunol 9:883-9
Maynard, Craig L; Weaver, Casey T (2009) Intestinal effector T cells in health and disease. Immunity 31:389-400
Lee, Yun Kyung; Mukasa, Ryuta; Hatton, Robin D et al. (2009) Developmental plasticity of Th17 and Treg cells. Curr Opin Immunol 21:274-80