Differential Gene Expression Involved in Bone Turnover of Mice Expressing Constitutively Active TGFβ Receptor Type I.
Ohnmar MyintNithidol SakunrangsitJatuphol PholtaisongParichart ToejingPinyada Pho-OnAsada LeelahavanichkulSomyoth SridurongritChatchawit AporntewanMatthew B GreenblattSutada LotinunPublished in: International journal of molecular sciences (2024)
Transforming growth factor beta (TGF-β) is ubiquitously found in bone and plays a key role in bone turnover. Mice expressing constitutively active TGF-β receptor type I ( Mx1;TβRI CA mice) are osteopenic. Here, we identified the candidate genes involved in bone turnover in Mx1;TβRI CA mice using RNA sequencing analysis. A total of 285 genes, including 87 upregulated and 198 downregulated genes, were differentially expressed. According to the KEGG analysis, some genes were involved in osteoclast differentiation ( Fcgr4 , Lilrb4a ), B cell receptor signaling ( Cd72 , Lilrb4a ), and neutrophil extracellular trap formation ( Hdac7 , Padi4 ). Lilrb4 is related to osteoclast inhibition protein, whereas Hdac7 is a Runx2 corepressor that regulates osteoblast differentiation. Silencing Lilrb4 increased the number of osteoclasts and osteoclast marker genes. The knocking down of Hdac7 increased alkaline phosphatase activity, mineralization, and osteoblast marker genes. Therefore, our present study may provide an innovative idea for potential therapeutic targets and pathways in TβRI -associated bone loss.
Keyphrases
- bone loss
- transforming growth factor
- bone mineral density
- genome wide
- high fat diet induced
- gene expression
- epithelial mesenchymal transition
- bioinformatics analysis
- genome wide identification
- bone regeneration
- postmenopausal women
- dna methylation
- wild type
- histone deacetylase
- body composition
- transcription factor
- binding protein
- skeletal muscle
- adipose tissue
- signaling pathway
- human health
- climate change
- metabolic syndrome
- risk assessment