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James BW, Bacon J, Hampshire T, et al. In vitro gene expression dissected: chemostat surgery for mycobacterium tuberculosis. Comp Funct Genomics. 2002;3(4):345-7doi: 10.1002/cfg.184.
James, B. W., Bacon, J., Hampshire, T., Morley, K., & Marsh, P. D. (2002). In vitro gene expression dissected: chemostat surgery for mycobacterium tuberculosis. Comparative and functional genomics, 3(4), 345-7. https://doi.org/10.1002/cfg.184
James, Brian W, et al. "In vitro gene expression dissected: chemostat surgery for mycobacterium tuberculosis." Comparative and functional genomics vol. 3,4 (2002): 345-7. doi: https://doi.org/10.1002/cfg.184
James BW, Bacon J, Hampshire T, Morley K, Marsh PD. In vitro gene expression dissected: chemostat surgery for mycobacterium tuberculosis. Comp Funct Genomics. 2002;3(4):345-7. doi: 10.1002/cfg.184. PMID: 18629267; PMCID: PMC2448431.
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Comp Funct Genomics. 2002;3(4):345-7. doi: 10.1002/cfg.184.

In vitro gene expression dissected: chemostat surgery for mycobacterium tuberculosis.

Comparative and functional genomics

Brian W James, Joanna Bacon, Tobias Hampshire, Kim Morley, Philip D Marsh

Affiliations

  1. Centre for Applied Microbiology and Research, Salisbury, Wiltshire SP4 0JG, UK.

PMID: 18629267 PMCID: PMC2448431 DOI: 10.1002/cfg.184

Abstract

A unique approach, combining defined and reproducible in vitro models with DNA microarrays, has been developed to study environmental modulation of mycobacterial gene expression. The gene expression profiles of samples of Mycobacterium tuberculosis, from independent chemostat cultures grown under defined and reproducible conditions, were found to be highly correlated. This approach is now being used to study the effect of relevant stimuli, such as limited oxygen availability, on mycobacterial gene expression. A modification of the chemostat culture system, enabling large-volume controlled batch culture, has been developed to study starvation survival. Cultures of M. tuberculosis have been maintained under nutrient-starved conditions for extended periods, with 10(6) - 10(7) bacilli surviving in a culturable state after 100 days. The design of the culture system has made it possible to control the environment and collect multiple time-course samples to study patterns of gene expression. These studies demonstrate that it is possible to perform long-term studies and obtain reproducible expression data using controlled and defined in vitro models.

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