Effector and memory CD8+ T cell responses to engineered influenza A escape mutants

Funding Activity

Website
http://purl.org/au-research/grants/nhmrc/454312

Funding Status
Closed

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Funded Activity Summary

T cells are a critical component of the immune system after infection with viruses. In particular, virus-specific CD8+ T cells can clear viral infections by killing virally-infected cells and the release of immunomodulators. These are called effector T cells. After the viral infection is cleared, a small proportion of T cells (around 5 to 10%) survives for many years and constitute a memory pool of virus-specific T cells. Memory T cells provide a rapid and effective protection in case of a repeated infection with the same virus, and hence result in a less severe disease. However, viruses often mutate their genes to escape such efficient T cell responses. In this study, we will investigate T cell responses after infection with mutated strains of influenza viruses. We will engineer a panel of mutant influenza viruses, which alter the nature and characteristics of T cells. We will analyse how efficient are these T cells and whether they can protect against a normal strain of influenza A. Subsequently, we will characterise quantitative and qualitative aspects of memory T cell pools after infection with mutant influenza viruses. Since a number of viruses such as influenza, HIV and HCV rapidly mutate their genes, our study will not only address the question of T cell responses to mutated influenza viruses, but also will provide an excellent model for investigating protective T cell responses to other viral infections.

Funded Activity Details

Start Date: 01-01-2007

End Date: 01-01-2009

Funding Scheme: NHMRC Project Grants

Funding Amount: $465,210.00

Funder: National Health and Medical Research Council

Research Topics

ANZSRC Field of Research (FoR)

Cellular Immunology

ANZSRC Socio-Economic Objective (SEO)

There are no SEO codes available for this funding activity

Other Keywords

CTL activation | T cell immunity | cell-mediated immunity | cytotoxic T cells | immunity to infection | immunologic memory | influenza | memory T cells | viral immunity

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