4.6 Review

BMP Signaling Pathway in Dentin Development and Diseases

期刊

CELLS
卷 11, 期 14, 页码 -

出版社

MDPI
DOI: 10.3390/cells11142216

关键词

bone morphogenetic proteins (BMPs); BMP receptors; dentin; odontoblasts; Smads; canonical Smad signaling; non-canonical Smad signaling; downstream genes; dentin defects

资金

  1. National Institute of Health (NIH)/National Institute of Dental Craniofacial Research (NIDCR) [R01DE019802]
  2. University of Texas Health San Antonio (UTHSA) School of Dentistry, TX, USA [131774]

向作者/读者索取更多资源

BMP signaling plays a crucial role in dentin development, regulating the differentiation and gene expression of odontoblasts through canonical and non-canonical Smad signaling pathways. Dysregulation of BMP signaling leads to tooth disorders, and studies in mice with BMP signaling-associated gene mutations or knockouts have provided insights into the underlying networks. This review summarizes recent advances in understanding BMP signaling in odontoblast differentiation and dentin formation, including the expression of BMPs, receptors, and downstream genes, as well as the structures of BMPs, receptors, antagonists, and their association with dentin defects.
BMP signaling plays an important role in dentin development. BMPs and antagonists regulate odontoblast differentiation and downstream gene expression via canonical Smad and non-canonical Smad signaling pathways. The interaction of BMPs with their receptors leads to the formation of complexes and the transduction of signals to the canonical Smad signaling pathway (for example, BMP ligands, receptors, and Smads) and the non-canonical Smad signaling pathway (for example, MAPKs, p38, Erk, JNK, and PI3K/Akt) to regulate dental mesenchymal stem cell/progenitor proliferation and differentiation during dentin development and homeostasis. Both the canonical Smad and non-canonical Smad signaling pathways converge at transcription factors, such as Dlx3, Osx, Runx2, and others, to promote the differentiation of dental pulp mesenchymal cells into odontoblasts and downregulated gene expressions, such as those of DSPP and DMP1. Dysregulated BMP signaling causes a number of tooth disorders in humans. Mutation or knockout of BMP signaling-associated genes in mice results in dentin defects which enable a better understanding of the BMP signaling networks underlying odontoblast differentiation and dentin formation. This review summarizes the recent advances in our understanding of BMP signaling in odontoblast differentiation and dentin formation. It includes discussion of the expression of BMPs, their receptors, and the implicated downstream genes during dentinogenesis. In addition, the structures of BMPs, BMP receptors, antagonists, and dysregulation of BMP signaling pathways associated with dentin defects are described.

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