BMP1 Promotes Keloid by Inducing Fibroblast Inflammation and Fibrogenesis.
Yi WangYahui ChenJinfeng WuXiangguang ShiPublished in: Journal of cellular biochemistry (2024)
Keloid is a typical fibrotic and inflammatory skin disease with unclear mechanisms and few therapeutic targets. In this study, we found that BMP1 was significantly increased in a collagen high-expressing subtype of fibroblast by reanalyzing a public single-cell RNA-sequence data set of keloid. The number of BMP1-positive fibroblast cells was increased in keloid fibrotic loci. Increased levels of BMP1 were further validated in the skin tissues and fibroblasts from keloid patients. Additionally, a positive correlation between BMP1 and the Keloid Area and Severity Index was found in keloid patients. In vitro analysis revealed collagen production, the phosphorylation levels of p65, and the IL-1β secretion decreased in BMP1 interfered keloid fibroblasts. Besides, the knockdown of BMP1 inhibited the growth and migration of keloid fibroblast cells. Mechanistically, BMP1 inhibition downregulated the noncanonical TGF-β pathways, including p-p38 and p-ERK1/2 signaling. Furthermore, we found the delivery of BMP1 siRNAs could significantly alleviate keloid in human keloid-bearing nude mice. Collectively, our results indicated that BMP1 exhibited various pathogenic effects on keloids as promoting cell proliferation, migration, inflammation, and ECM deposition of fibroblast cells by regulating the noncanonical TGF-β/p38 MAPK, and TGF-β/ERK pathways. BMP1-lowing strategies may appear as a potential new therapeutic target for keloid.
Keyphrases
- mesenchymal stem cells
- bone regeneration
- cell proliferation
- induced apoptosis
- end stage renal disease
- wound healing
- oxidative stress
- single cell
- signaling pathway
- cell cycle arrest
- chronic kidney disease
- newly diagnosed
- pi k akt
- gene expression
- emergency department
- peritoneal dialysis
- adipose tissue
- type diabetes
- endoplasmic reticulum stress
- dna methylation
- machine learning
- genome wide
- risk assessment
- artificial intelligence
- extracellular matrix
- soft tissue
- electronic health record
- deep learning
- amino acid
- high fat diet induced
- wild type