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Mycobacterium tuberculosis decreases human macrophage IFN-γ responsiveness through miR-132 and miR-26a.

Publication ,  Journal Article
Ni, B; Rajaram, MVS; Lafuse, WP; Landes, MB; Schlesinger, LS
Published in: Journal of immunology (Baltimore, Md. : 1950)
November 2014

IFN-γ-activated macrophages play an essential role in controlling intracellular pathogens; however, macrophages also serve as the cellular home for the intracellular pathogen Mycobacterium tuberculosis. Based on previous evidence that M. tuberculosis can modulate host microRNA (miRNA) expression, we examined the miRNA expression profile of M. tuberculosis-infected primary human macrophages. We identified 31 differentially expressed miRNAs in primary human macrophages during M. tuberculosis infection by NanoString and confirmed our findings by quantitative real-time RT-PCR. In addition, we determined a role for two miRNAs upregulated upon M. tuberculosis infection, miR-132 and miR-26a, as negative regulators of transcriptional coactivator p300, a component of the IFN-γ signaling cascade. Knockdown expression of miR-132 and miR-26a increased p300 protein levels and improved transcriptional, translational, and functional responses to IFN-γ in human macrophages. Collectively, these data validate p300 as a target of miR-132 and miR-26a, and demonstrate a mechanism by which M. tuberculosis can limit macrophage responses to IFN-γ by altering host miRNA expression.

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Published In

Journal of immunology (Baltimore, Md. : 1950)

DOI

EISSN

1550-6606

ISSN

0022-1767

Publication Date

November 2014

Volume

193

Issue

9

Start / End Page

4537 / 4547

Related Subject Headings

  • p300-CBP Transcription Factors
  • Tuberculosis
  • Reproducibility of Results
  • Receptors, IgG
  • RNA, Messenger
  • RNA Interference
  • Mycobacterium tuberculosis
  • MicroRNAs
  • Macrophages
  • Interferon-gamma
 

Citation

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Ni, B., Rajaram, M. V. S., Lafuse, W. P., Landes, M. B., & Schlesinger, L. S. (2014). Mycobacterium tuberculosis decreases human macrophage IFN-γ responsiveness through miR-132 and miR-26a. Journal of Immunology (Baltimore, Md. : 1950), 193(9), 4537–4547. https://doi.org/10.4049/jimmunol.1400124
Ni, Bin, Murugesan V. S. Rajaram, William P. Lafuse, Michelle B. Landes, and Larry S. Schlesinger. “Mycobacterium tuberculosis decreases human macrophage IFN-γ responsiveness through miR-132 and miR-26a.Journal of Immunology (Baltimore, Md. : 1950) 193, no. 9 (November 2014): 4537–47. https://doi.org/10.4049/jimmunol.1400124.
Ni B, Rajaram MVS, Lafuse WP, Landes MB, Schlesinger LS. Mycobacterium tuberculosis decreases human macrophage IFN-γ responsiveness through miR-132 and miR-26a. Journal of immunology (Baltimore, Md : 1950). 2014 Nov;193(9):4537–47.
Ni, Bin, et al. “Mycobacterium tuberculosis decreases human macrophage IFN-γ responsiveness through miR-132 and miR-26a.Journal of Immunology (Baltimore, Md. : 1950), vol. 193, no. 9, Nov. 2014, pp. 4537–47. Epmc, doi:10.4049/jimmunol.1400124.
Ni B, Rajaram MVS, Lafuse WP, Landes MB, Schlesinger LS. Mycobacterium tuberculosis decreases human macrophage IFN-γ responsiveness through miR-132 and miR-26a. Journal of immunology (Baltimore, Md : 1950). 2014 Nov;193(9):4537–4547.

Published In

Journal of immunology (Baltimore, Md. : 1950)

DOI

EISSN

1550-6606

ISSN

0022-1767

Publication Date

November 2014

Volume

193

Issue

9

Start / End Page

4537 / 4547

Related Subject Headings

  • p300-CBP Transcription Factors
  • Tuberculosis
  • Reproducibility of Results
  • Receptors, IgG
  • RNA, Messenger
  • RNA Interference
  • Mycobacterium tuberculosis
  • MicroRNAs
  • Macrophages
  • Interferon-gamma