Manipulating immunity to Mycobacterium tuberculosis with novel vaccines and immunotherapeutics

Funded Activity Summary

Tuberculosis (TB) is an enormous world health problem with 2 million deaths per year and an estimated one third of the world s population infected with the TB bacterium. People who become infected with the bacterium and cannot clear the infection are at great risk of developing TB later in life. Control of TB is confronted with two major problems. First, the only vaccine available for TB, known as BCG, is not very effective at preventing the disease. We do not know why BCG is not an effective vaccine and the type of immune response required to achieve optimal protection against TB is not fully understood. Second, the drugs currently used to treat TB are expensive, treatment times are long and drug resistance is increasing at an alarming rate. Therefore there is an urgent need to develop new vaccines and therapies against TB. We propose to use animal models of TB infection and sophisticated immunological techniques to compare immune responses generated by TB, BCG and new generation vaccines developed in our laboratory. This will allow us to identify the key features of a vaccine that results in effective, long-lasting protection against TB infection. Novel strategies to increase the immune response in the lung, the main site of TB infection, will also be examined. This will involve pulmonary delivery of molecules that increase the number and effectiveness of lung antigen presenting cells, which are necessary to drive the right type of immune response to eradicate the TB bacterium. Increasing lung immunity will be used to either boost the effect of the BCG vaccine, or as a therapy to kill the bacterium in those already infected. This is an internationally competitive project and our team is at the forefront of this research effort. The development of new vaccines to prevent TB or new strategies to treat established TB infection would be a major medical breakthrough and a represent a significant achievement for Australian health and medical research.

Funded Activity Details

Start Date: 01-01-2006

End Date: 01-01-2008

Funding Scheme: NHMRC Project Grants

Funding Amount: $524,770.00

Funder: National Health and Medical Research Council

Research Topics

ANZSRC Field of Research (FoR)

Medical Bacteriology

ANZSRC Socio-Economic Objective (SEO)

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Other Keywords

Dendritic cells | Immune response | Mycobacterial infection | Therapeutics | Tuberculosis | Vaccine development | disease model, animals | immunity to infection | immunotherapy | improvement of vaccine efficacy

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