Mycobacterium tuberculosis Rv0577, a novel TLR2 agonist, induces maturation of dendritic cells and drives Th1 immune response

Eui Hong Byun, Woo Sik Kim, Jong Seok Kim, In Duk Jung, Yeong Min Park, Hwa Jung Kim, Sangnae Cho, SungJae Shin

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

Tuberculosis (TB) caused by Mycobacterium tuberculosis constitutes an ongoing threat to global health. An antigen that can induce dendritic cell (DC) maturation and lead to enhanced cellular immunity is crucial to the development of an effective TB vaccine. Here, we investigated the functional roles and the related signaling mechanism of the Rv0577 protein, a M. tuberculosis complex-restricted secreted protein involved in the methylglyoxal detoxification pathway. Rv0577 recognizes Toll-like receptor 2 (TLR2) and functionally induces DC maturation by augmenting the expression of cell surface molecules (CD80, CD86, and MHC class I and II) and proinflammatory cytokine production (TNF-α, IL-1β, IL-6, and IL-12p70) in DCs on MyD88-dependent signaling, mitogen-activated protein kinases, and nuclear factor κB signaling pathways. In addition, Rv0577-treated DCs activated naive T cells, effectively polarized CD4+ and CD8+ T cells to secrete IFN-γ and IL-2, and induced T-cell proliferation, indicating that this protein possibly contributes to Th1-polarization of the immune response. More important, unlike LPS, Rv0577-treated DCs specifically induced the proliferation of memory CD4+/CD8+CD44highCD62Llow T cells in the spleen of M. tuberculosis-infected mice in a TLR2-dependent manner. Taken together, these findings suggest that Rv0577 may regulate innate and adaptive immunity by interacting with TLR2, a finding that could be helpful in the design of new TB vaccines.

Original languageEnglish
Pages (from-to)2695-2711
Number of pages17
JournalFASEB Journal
Volume26
Issue number6
DOIs
Publication statusPublished - 2012 Jun 1

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Toll-Like Receptor 2
T-cells
Mycobacterium tuberculosis
Dendritic Cells
Tuberculosis Vaccines
T-Lymphocytes
Pyruvaldehyde
Detoxification
Proteins
Cell proliferation
Adaptive Immunity
Mitogen-Activated Protein Kinases
Interleukin-1
Innate Immunity
Cellular Immunity
Interleukin-2
Interleukin-6
Tuberculosis
Spleen
Cells

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Biochemistry
  • Molecular Biology
  • Genetics

Cite this

Byun, Eui Hong ; Kim, Woo Sik ; Kim, Jong Seok ; Jung, In Duk ; Park, Yeong Min ; Kim, Hwa Jung ; Cho, Sangnae ; Shin, SungJae. / Mycobacterium tuberculosis Rv0577, a novel TLR2 agonist, induces maturation of dendritic cells and drives Th1 immune response. In: FASEB Journal. 2012 ; Vol. 26, No. 6. pp. 2695-2711.
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Mycobacterium tuberculosis Rv0577, a novel TLR2 agonist, induces maturation of dendritic cells and drives Th1 immune response. / Byun, Eui Hong; Kim, Woo Sik; Kim, Jong Seok; Jung, In Duk; Park, Yeong Min; Kim, Hwa Jung; Cho, Sangnae; Shin, SungJae.

In: FASEB Journal, Vol. 26, No. 6, 01.06.2012, p. 2695-2711.

Research output: Contribution to journalArticle

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