Inhibition of BMP2-induced, TAK1 kinase-mediated neurite outgrowth by Smad6 and Smad7

Makoto Yanagisawa, Kinichi Nakashima, Kohsuke Takeda, Wataru Ochiai, Takumi Takizawa, Masaya Ueno, Makiko Takizawa, Hiroshi Shibuya, Tetsuya Taga

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

Background: BMP2 is known to play a wide variety of roles, including some in the development of the nervous system. This cytokine has been reported to induce neurite outgrowth in rat pheochromocytoma PC12 cells via the activation of a p38 MAP kinase, although its regulatory mechanism remains largely to be elucidated. Results: BMP2-induced neurite outgrowth in PC12 cells was inhibited by the introduction of a kinase-negative form of a MAP kinase kinase kinase, TAK1, an upstream regulatory kinase for p38 kinase. Following BMP2 stimulation, the expression of Smad6 and Smad7, inhibitory Smad species that are known to inhibit the BMP2-restricted Smad species, Smad1, Smad5 and Smad8, was up-regulated. Unexpectedly, over-expression of either Smad6 or Smad7 in PC12 cells repressed the BMP2-induced neurite outgrowth and severely impeded the p38 kinase pathway. Both of these inhibitory Smads were found to interact physically with TAK1-binding protein, a molecule required for TAK1 activation. Conclusions: This study demonstrates that BMP2-induced neurite outgrowth in PC12 cells involves activation of the TAK1-p38 kinase pathway which is inhibited by Smad6 and Smad7.

Original languageEnglish
Pages (from-to)1091-1099
Number of pages9
JournalGenes to Cells
Volume6
Issue number12
DOIs
Publication statusPublished - Dec 24 2001
Externally publishedYes

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PC12 Cells
Phosphotransferases
MAP Kinase Signaling System
MAP Kinase Kinase Kinases
Pheochromocytoma
p38 Mitogen-Activated Protein Kinases
Nervous System
Carrier Proteins
Cytokines
Neuronal Outgrowth

All Science Journal Classification (ASJC) codes

  • Genetics
  • Cell Biology

Cite this

Inhibition of BMP2-induced, TAK1 kinase-mediated neurite outgrowth by Smad6 and Smad7. / Yanagisawa, Makoto; Nakashima, Kinichi; Takeda, Kohsuke; Ochiai, Wataru; Takizawa, Takumi; Ueno, Masaya; Takizawa, Makiko; Shibuya, Hiroshi; Taga, Tetsuya.

In: Genes to Cells, Vol. 6, No. 12, 24.12.2001, p. 1091-1099.

Research output: Contribution to journalArticle

Yanagisawa, M, Nakashima, K, Takeda, K, Ochiai, W, Takizawa, T, Ueno, M, Takizawa, M, Shibuya, H & Taga, T 2001, 'Inhibition of BMP2-induced, TAK1 kinase-mediated neurite outgrowth by Smad6 and Smad7', Genes to Cells, vol. 6, no. 12, pp. 1091-1099. https://doi.org/10.1046/j.1365-2443.2001.00483.x
Yanagisawa, Makoto ; Nakashima, Kinichi ; Takeda, Kohsuke ; Ochiai, Wataru ; Takizawa, Takumi ; Ueno, Masaya ; Takizawa, Makiko ; Shibuya, Hiroshi ; Taga, Tetsuya. / Inhibition of BMP2-induced, TAK1 kinase-mediated neurite outgrowth by Smad6 and Smad7. In: Genes to Cells. 2001 ; Vol. 6, No. 12. pp. 1091-1099.
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