Short- and long-term exposure to high glucose induces unique transcriptional changes in osteoblasts in vitro.
Biol Open
; 13(5)2024 May 15.
Article
in En
| MEDLINE
| ID: mdl-38742438
ABSTRACT
Bone is increasingly recognized as a target for diabetic complications. In order to evaluate the direct effects of high glucose on bone, we investigated the global transcriptional changes induced by hyperglycemia in osteoblasts in vitro. Rat bone marrow-derived mesenchymal stromal cells were differentiated into osteoblasts for 10 days, and prior to analysis, they were exposed to hyperglycemia (25â
mM) for the short-term (1 or 3 days) or long-term (10â
days). Genes and pathways regulated by hyperglycemia were identified using mRNA sequencing and verified with qPCR. Genes upregulated by 1-day hyperglycemia were, for example, related to extracellular matrix organization, collagen synthesis and bone formation. This stimulatory effect was attenuated by 3 days. Long-term exposure impaired osteoblast viability, and downregulated, for example, extracellular matrix organization and lysosomal pathways, and increased intracellular oxidative stress. Interestingly, transcriptional changes by different exposure times were mostly unique and only 89 common genes responding to glucose were identified. In conclusion, short-term hyperglycemia had a stimulatory effect on osteoblasts and bone formation, whereas long-term hyperglycemia had a negative effect on intracellular redox balance, osteoblast viability and function.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Osteoblasts
/
Gene Expression Regulation
/
Glucose
Limits:
Animals
Language:
En
Journal:
Biol Open
Year:
2024
Document type:
Article
Affiliation country:
Finland
Country of publication:
United kingdom