Abstract
Abstract Tmem173 was identified as a growth inhibitor associated with major histocompatibility complex (MHC) class II and a potential stimulator for IFN-β, an innate immune inducer and a negative feedback controller for RANKL-induced osteoclast differentiation of monocytic macrophage cells. In this study, we confirmed that transmembrane protein 173 (Tmem173) overexpression inhibited the expression of osteoclast-specific genes, tartrate-resistant acid phosphatase (TRAP), cathepsin K, and matrix metalloproteinase-9 (MMP-9), as well as bone resorption pit formation in RANKL-treated RAW 264.7 cells. Activation of osteoclast-specific transcription factors, c-Fos and nuclear factor of activated T cells cytoplasmic-1 (NFATc1), and RANKL-induced activation of ERK were also down-regulated by Tmem173 overexpression. Collectively, these results suggest that Tmem173 plays a regulatory role in RANKL-RANK-mediated signaling in osteoclastogenesis.
Original language | English |
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Article number | 37040 |
Pages (from-to) | 836-841 |
Number of pages | 6 |
Journal | FEBS Letters |
Volume | 589 |
Issue number | 7 |
DOIs | |
Publication status | Published - 2015 Mar 24 |
Externally published | Yes |
Keywords
- Osteoclastogenesis
- RANK ligand
- Tartrate-resistant acid phosphatase
- Transmembrane protein 173
ASJC Scopus subject areas
- Biophysics
- Structural Biology
- Biochemistry
- Molecular Biology
- Genetics
- Cell Biology