Prior immunity to an unrelated pathogen can lead to beneficial effects such as enhanced viral clearance or detrimental effects such as increased viral load or remarkably increased immunopathology occurring as a consequence of T-cell cross reactivity (XR). Initially described under highly controlled conditions using animal models infecting with human respiratory pathogens such as influenza A (lAV), vaccinia (W), and lymphocytic choriomeningitis (LCMV) viruses, examples of such XR T-cell responses have now been associated with enhanced pathology in humans infected with Epstein-Barr (EBV) (by us), lAV, dengue, and hepatitis C (HCV) viruses. The overall objective of this grant is to exploit our developed mouse models to determine under controlled conditions, not possible in human studies, how T-cell XR impacts T-cell selection and function leading to detrimental effects resulting in exacerbation of disease outcome during respiratory infections. Simultaneously we will use our developed human T-cell expertise during viral infections to translate our findings in mouse models to human disease, specifically examining the association between CDS T-cell XR and the severity of lAV infection. We have identified networks of cross-reactive CDS T-cells in both mice and humans, in human studies, we found that the frequency of lAV-Mlss-specific memory CDS responses XR: with EBV-BMLFI280 in HLA-A2+ patients directly correlated with the severity of acute infectious mononucleosis. We have also observed in 5 EBV-seronegative HLA-A2+ middle-aged adults a unique XR between Mi-specific T-cells and EBV lytic epitopes, BMLF1 and BR.LF1, raising the intriguing possibility that these may be protective. We will focus this proposal first on proof of principle animal models examining the role of t-cell XR in mediating detrimental effects during respiratory infections in lAV-inimune mice subsequently infected with LCMV (lAV+LCMV), category C and A human pathogens, respectively. This model leads to severe lung pathology very similar to that observed in lAV pandemics. Our work will focus on the role of XR memory CD4 and CDS T-cells in mediating detrimental effects, either induction of lung pathology or enhancing viral load (Aim 1&2). At the same time we will determine in translational studies if there is any evidence that this unique XR CDS T-cell network between lAV and EBV is associated with the severity of disease during acute lAV infection in patients when both viruses are present (Aim 3). The overall objective of this proposal is to determine how XR T-cells impact T-cell selection and function and influence disease outcome, for better or worse, as the host is exposed to acute respiratory infections such as lAV.

Public Health Relevance

This proposal seeks to further explore the basic principles of heterologous immunity and cross-reactive T cell responses during respiratory infections, to differentiate features which lead to improved or worsened disease outcome, and to circumvent both acute and Chronic lung pathogenesis during viral infections and improve vaccination strategies.

Agency
National Institute of Health (NIH)
Institute
National Institute of Allergy and Infectious Diseases (NIAID)
Type
Research Program--Cooperative Agreements (U19)
Project #
5U19AI109858-04
Application #
9226031
Study Section
Special Emphasis Panel (ZAI1)
Project Start
2014-03-01
Project End
2019-02-28
Budget Start
2017-03-01
Budget End
2018-02-28
Support Year
4
Fiscal Year
2017
Total Cost
Indirect Cost
Name
University of Massachusetts Medical School Worcester
Department
Pathology
Type
Schools of Medicine
DUNS #
603847393
City
Worcester
State
MA
Country
United States
Zip Code
01655
Strutt, T M; Dhume, K; Finn, C M et al. (2018) IL-15 supports the generation of protective lung-resident memory CD4 T cells. Mucosal Immunol 11:668-680
Devarajan, Priyadharshini; Jones, Michael C; Kugler-Umana, Olivia et al. (2018) Pathogen Recognition by CD4 Effectors Drives Key Effector and Most Memory Cell Generation Against Respiratory Virus. Front Immunol 9:596
Hatfield, Steven D; Daniels, Keith A; O'Donnell, Carey L et al. (2018) Weak vaccinia virus-induced NK cell regulation of CD4 T cells is associated with reduced NK cell differentiation and cytolytic activity. Virology 519:131-144
Becerra-Artiles, Aniuska; Santoro, Tessa; Stern, Lawrence J (2018) Evaluation of a method to measure HHV-6B infection in vitro based on cell size. Virol J 15:4
Marshall, Nikki B; Vong, Allen M; Devarajan, Priyadharshini et al. (2017) NKG2C/E Marks the Unique Cytotoxic CD4 T Cell Subset, ThCTL, Generated by Influenza Infection. J Immunol 198:1142-1155
Blevins, Sydney; Huseby, Eric S (2017) Killer T cells with a beta-flavi(r) for dengue. Nat Immunol 18:1186-1188
Antunes, Dinler A; Rigo, Maurício M; Freitas, Martiela V et al. (2017) Interpreting T-Cell Cross-reactivity through Structure: Implications for TCR-Based Cancer Immunotherapy. Front Immunol 8:1210
Shin, Hyun Mu; Kapoor, Varun N; Kim, Gwanghun et al. (2017) Transient expression of ZBTB32 in anti-viral CD8+ T cells limits the magnitude of the effector response and the generation of memory. PLoS Pathog 13:e1006544
Song, InYoung; Gil, Anna; Mishra, Rabinarayan et al. (2017) Broad TCR repertoire and diverse structural solutions for recognition of an immunodominant CD8+ T cell epitope. Nat Struct Mol Biol 24:395-406
Watkin, Levi B; Mishra, Rabinarayan; Gil, Anna et al. (2017) Unique influenza A cross-reactive memory CD8 T-cell receptor repertoire has a potential to protect against EBV seroconversion. J Allergy Clin Immunol 140:1206-1210

Showing the most recent 10 out of 41 publications