Most clinically relevant blood samples are characterized by a limited number of cells available for analysis combined with a low frequency of the T cell populations of interest. Current methodologies for analysis of these samples often require extensive in vitro manipulation and/or assumptions about the antigen specificity and function of the cell populations of interest. The overall goal of this project is to develop new technology that will improve ex vivo analysis of T cell specificity and function, by taking advantage of advances in bioinformatics, proteomics, protein engineering, and array technology. There are five specific aims.
Aim 1 is to improve epitope discovery practice, by developing bioinformatics-based epitope prediction algorithms, by applying recent advances in mass spectrometry to identify naturally processed MHC-bound peptides, and by measuring MHC-peptide kinetic lifetimes rather than equilibrium binding affinities.
Aim 2 is to develop novel MHC oligomers to extend tetramer staining technology to characterization of heterologous immune responses and characterization of moderate-affinity and low-avidity T cells.
Aim 3 is to develop MHCpeptide arrays and ARC arrays, The arrays will be used for functional characterization of T cells after antigen-specific capture and/or activation.
Aim 4 is to optimize ex vivo expansion of T celts using nonspecific expansion and antigen-specific stimulation protocols, and to develop new methods for antigenspecific enrichment, expansion, immortalization of T cell populations.
Aim 5 is to develop methodology for high-throughput T cell cloning and analysis, including development of microscale culture methods and application of high-throughput screening methodology to T cell characterization. Once developed and validated, these technologies will be applied to T cell identification and analysis experiments in the associated Research Projects.
An important component of the immune system's response to viruses and other pathogens involves T lymphocytes, a kind of white blood cell. Much is known about T lymphocyte function from animal studies and from model systems, but in many cases of human disease current methodology is not suitable for the detailed mechanistic studies needed to develop new therapeutic strategies. The goal of this project is to develop new experimental tools for characterizing T lymphocytes and their responses to viral infection.
|Townsley, E; O'Connor, G; Cosgrove, C et al. (2016) Interaction of a dengue virus NS1-derived peptide with the inhibitory receptor KIR3DL1 on natural killer cells. Clin Exp Immunol 183:419-30|
|Woda, Marcia; Friberg, Heather; Currier, Jeffrey R et al. (2016) Dynamics of Dengue Virus (DENV)-Specific B Cells in the Response to DENV Serotype 1 Infections, Using Flow Cytometry With Labeled Virions. J Infect Dis 214:1001-9|
|Ramirez, Alejandro; Co, Mary; Mathew, Anuja (2016) CpG Improves Influenza Vaccine Efficacy in Young Adult but Not Aged Mice. PLoS One 11:e0150425|
|Becerra-Artiles, Aniuska; Dominguez-Amorocho, Omar; Stern, Lawrence J et al. (2015) A Simple Proteomics-Based Approach to Identification of Immunodominant Antigens from a Complex Pathogen: Application to the CD4 T Cell Response against Human Herpesvirus 6B. PLoS One 10:e0142871|
|Woda, Marcia; Mathew, Anuja (2015) Fluorescently labeled dengue viruses as probes to identify antigen-specific memory B cells by multiparametric flow cytometry. J Immunol Methods 416:167-77|
|Jaiswal, Smita; Smith, Kenneth; Ramirez, Alejandro et al. (2015) Dengue virus infection induces broadly cross-reactive human IgM antibodies that recognize intact virions in humanized BLT-NSG mice. Exp Biol Med (Maywood) 240:67-78|
|Tervo, Laura; MÃ¤kelÃ¤, Satu; SyrjÃ¤nen, Jaana et al. (2015) Smoking is associated with aggravated kidney injury in Puumala hantavirus-induced haemorrhagic fever with renal syndrome. Nephrol Dial Transplant 30:1693-8|
|Thompson, Mikayla R; Sharma, Shruti; Atianand, Maninjay et al. (2014) Interferon Î³-inducible protein (IFI) 16 transcriptionally regulates type i interferons and other interferon-stimulated genes and controls the interferon response to both DNA and RNA viruses. J Biol Chem 289:23568-81|
|Mathew, Anuja; Townsley, Elizabeth; Ennis, Francis A (2014) Elucidating the role of T cells in protection against and pathogenesis of dengue virus infections. Future Microbiol 9:411-25|
|Yin, Liusong; Stern, Lawrence J (2014) A novel method to measure HLA-DM-susceptibility of peptides bound to MHC class II molecules based on peptide binding competition assay and differential IC(50) determination. J Immunol Methods 406:21-33|
Showing the most recent 10 out of 105 publications