Mycobacterium marinum Infection in Zebrafish and Microglia Imitates the Early Stage of Tuberculous Meningitis
- Chen, Z., Shao, X.Y., Wang, C., Hua, M.H., Wang, C.N., Wang, X., Wang, Q.J., Yao, J.Y., Fan, Y.H., Qin, Y.W.
- Journal of molecular neuroscience : MN 64(2): 321-330 (Journal)
- Registered Authors
- Wang, Xin
- Autophagy, Microglia, Mycobacterium marinum, Tubercular meningitis, Zebrafish
- MeSH Terms
- Cell Line
- Cells, Cultured
- Mice, Inbred C57BL
- Mycobacterium Infections/metabolism
- Mycobacterium Infections/microbiology
- Mycobacterium Infections/pathology*
- Mycobacterium marinum/pathogenicity*
- 29352446 Full text @ J. Mol. Neurosci.
Chen, Z., Shao, X.Y., Wang, C., Hua, M.H., Wang, C.N., Wang, X., Wang, Q.J., Yao, J.Y., Fan, Y.H., Qin, Y.W. (2018) Mycobacterium marinum Infection in Zebrafish and Microglia Imitates the Early Stage of Tuberculous Meningitis. Journal of molecular neuroscience : MN. 64(2):321-330.
Mycobacterium tuberculosis (M. tuberculosis) invading and activating microglia causes the most serious subtypes of tuberculosis called tubercular meningitis. However, the developmental process of tubercular meningitis, especially the early phase, is poorly understood due to lacking well-established and well-accepted visible models in vitro and in vivo. Here, consistent with one recent report, we found Mycobacterium marinum (M. marinum) invade the zebrafish brain and subsequently cause granuloma-like structures. We further showed that M. marinum, which shares similar characteristics with M. tuberculosis, can invade microglia and replicate in microglia, which subsequently promote the secretion of pro-inflammatory cytokines such as IL-1β, IL-6, and TNF-α. M. marinum infection in microglia can also promote autophagy, which conversely limits the replication of M. marinum. Thus, pharmacological activation of autophagy by rapamycin could prevent M. marinum replication. Our study provides in vivo and in vitro models to study underlying pathogenic mechanisms of tubercular meningitis by using M. marinum. Our results also showed that activation of autophagy could be a meaningful way to prevent tubercular meningitis.
Genes / Markers
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Engineered Foreign Genes