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Clinical and Developmental Immunology
Volume 2011 (2011), Article ID 406549, 2 pages
Immunity to Mycobacterium tuberculosis
1Department of Infectious Diseases and Immunology, University of Sydney, Sydney, NSW 2000, Australia
2Infectiologie Animale et Sant####^~^~^~^~^~^####xe9; Publique, INRA Centre de Tours, Nouzilly 37380, France
3Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
4Centenary Institute of Cancer Medicine and Cell Biology, Newtown, NSW 2042, Australia
Received 12 May 2011; Accepted 12 May 2011
Copyright © 2011 James A. Triccas et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Tuberculosis (TB) remains a major cause of mortality and morbidity worldwide. Currently, a third of the world's population is infected with Mycobacterium tuberculosis, the causative agent of TB, and annually there are 10 million new cases of clinical TB and approximately 2 million deaths . TB kills more individuals each year than any other bacterial pathogen, and alarmingly, current control practices have not been able to significantly reduce the incidence of the disease over the past 15 years . The current vaccine in use, Mycobacterium bovis bacille Calmette-Gu####^~^~^~^~^~^####xe9;rin (BCG), has been unable to limit the transmission of the disease, and the problem is compounded by the HIV/AIDS pandemic and the emergence of multidrug resistant strains of M. tuberculosis including extensively drug-resistant strains in multiple countries . There is thus an urgent need to better understand the host response to M. tuberculosis and develop more effective strategies to control TB.
This special issue contains original research reports and review articles covering a number of aspects of TB immunity. The first series of articles focuses on immune response to M. tuberculosis in humans. These studies range from the expression of cytolytic mediators following BCG vaccination in children (P. L. Semple et al.), control of antigen presentation function (A. Aquino et al.), changes in cellular makeup during postprimary TB (K. J. Welsh et al.), and treatment of disseminated infection in immuno-compromised individuals (A. A. Alangari et al.). The reviews of S. Meraviglia et al. and H. Saiga et al. describe the role of immune effectors in mycobacterial infection, while articles describing M. tuberculosis strain diversity (E. Nava-Agliluera et al.), TB in myelitis (Y. Feng et al.), and humans T- and B- cell responses to immunodominant mycobacterial antigens (G. C. Macedo et al.) also form part of this special issue.
New insights on the interaction of M. tuberculosis with the host are also provided in this special issue. The reviews of M. Abebe et al., S. L. Sampson et al., and S. Ahmad describe pathogenic mechanisms and virulence factors expressed by M. tuberculosis, while the research articles of N. Sanarico et al. and E. Giacomini et al. investigate the transcriptional and cytokine response of host cells to M. tuberculosis infection. Reviews on TB transcriptomics (C. R. Z####^~^~^~^~^~^####xe1;rate-Blad####^~^~^~^~^~^####xe9;s et al.) and granuloma liquefaction (P.-J. Cardona) provide further insight into the disease process during M. tuberculosis infection.
The development of new vaccines is a major goal of TB research programs, and this special issue contains a number of articles investigating vaccine design and testing in animal models. G. G. Guerrero and C. Locht report on the use of recombinant antigens to boost BCG-induced immunity, while C. Wang et al. and M. Okada et al. similarly investigate prime-boost approaches to develop more effective TB vaccine regimens. The immune response following vaccination with M. tuberculosis lipoproteins is described in the article of C. Palma et al., and the use of cattle as a model to study TB immunity is the focus of the review article of W. R. Waters et al. The special issue closes with an overview of biosensing technologies for detection of M. tuberculosis by Z. Zhou et al.
In conclusion, the aspects of immunity to M. tuberculosis infection, host-pathogen interaction and vaccine development covered in this special issue may lead to future advances in the treatment and control of TB.
James A. Triccas
Carl G. Feng
Nicholas P. West
- World Health Organization, “Global tuberculosis control,” 2010, http://www.who.int/tb/publications/global_report/2010/en/index.html.
- A. Matteelli, G. B. Migliori, D. Cirillo, R. Centis, E. Girardi, and M. Raviglione, “Multidrug-resistant and extensively drug-resistant Mycobacterium tuberculosis: epidemiology and control,” Expert Review of Anti-Infective Therapy, vol. 5, no. 5, pp. 857–871, 2007.