Journal
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
Volume 10, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fcell.2022.921364
Keywords
LncRNA-long noncoding RNA; lncRNA-MALAT1; dental pulp; high glucose; mineralization
Categories
Funding
- National Natural Science Foundation of China
- [81870755]
- [81700956]
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In this study, it was found that MALAT1 is mainly expressed in the cytoplasm of dental pulp cells and is involved in the regulation of mineralization process in a high-glucose microenvironment. Specifically, MALAT1 participates in dental pulp cell mineralization by regulating multiple factors (TGF beta-1, BMP2, MSX2, SP7, ALP, and DSPP).
Metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) belongs to the long non-coding RNA (LncRNA) family. LncRNA-MALAT1 is expressed in a variety of tissues and is involved in a variety of diseases and biological processes. Although LncRNA-MALAT1 is upregulated in a high-glucose microenvironment and may participate in odontogenic differentiation, the underlying mechanism is not yet well elucidated. Here, we show that MALAT1 was mainly expressed in the cytoplasm of dental pulp cells (DPCs) in situ hybridization. In addition, high levels of mineralization-related factors, namely, tumor growth factors beta 1 and 2 (TGF beta-1 and TGF beta-2), bone morphogenetic proteins 2 and 4 (BMP2 and BMP4), bone morphogenetic protein receptor 1 (BMPR1), SMAD family member 2 (SMAD2), runt-related transcription factor 2 (RUNX2), Msh homeobox 2 (MSX2), transcription factor SP7 (SP7), alkaline phosphatase (ALP), dentin matrix acidic phosphoprotein 1 (DMP1), and dentin sialophosphoprotein (DSPP), were expressed, and MALAT1 was significantly overexpressed in DPCs 7 and 14 days after mineralization induction in a high-glucose microenvironment, but only TGF beta-1, BMP2, MSX2, SP7, ALP, and DSPP were significantly downregulated in DPCs after MALAT1 inhibition. MALAT1 may participate in the mineralization process of DPCs by regulating multiple factors (TGF beta-1, BMP2, MSX2, SP7, ALP, and DSPP).
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