Abstract
Osteoporosis (OP) has a significant detrimental impact on the health of the elder. Long-term clinical effectiveness of current drugs used for OP treatment is limited. Therefore, it is very important to explore novel treatment targets for OP. The expression of SNHG1, HMGB1, OCN and OPN in gene level was measured using RT-qPCR, and the protein expression was determined by Western blotting assay. The concentration of IL-1β and IL-18 in supernatant of the bone marrow mesenchymal stem cells (BMSCs) was measured by ELISA. The interaction between SNHG1 and HMGB1 was confirmed by RNA pull down. Besides, alizarin red staining was performed to evaluate the differentiation of BMSCs into osteoblast. SNHG1 and HMGB1 were found to be upregulated in the serum of OP patients. During the osteogenic differentiation of BMSCs, the expression of osteoblastogenesis markers (OCN and OPN) and the activity of ALP were upregulated, while the expression levels of SNHG1 and HMGB1 were decreased in a time-dependent manner. In addition, the interaction between SNHG1 and HMGB1, expression of pyroptosis-associated factors (caspase-1 p20 and GSDMD-N), and secretion of IL-1β and IL-18 were also decreased during osteogenic differentiation. Interestingly, increasing SNHG1 promoted HMGB1 expression, activated pyroptosis, but inhibited osteogenic differentiation. Silencing HMGB1 or inhibiting caspase-1 partially rescued the inhibitory effect of SNHG1 on osteogenic differentiation. Our findings indicate that SNHG1 suppresses the osteogenic differentiation of BMSCs by activating pyroptosis through interaction with HMGB1 and promotion of HMGB1 expression. Our work provides further evidence supporting SNHG1 acts as a potential target for OP treatment, and reveals for the first time that SNHG1 regulates osteogenic differentiation by affecting pyroptosis.
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The data underlying this article will be shared on reasonable request to the corresponding author.
Abbreviations
- ALP:
-
Alkaline phosphatase
- BMNCR:
-
Bone marrow associated non-coding RNA
- BMSCs:
-
Bone marrow mesenchymal stem cells
- CASC11:
-
Cancer susceptibility 11
- CRNDE:
-
Colorectal neoplasia differentially expressed
- DANCR:
-
Differentiation antagonizing nonprotein coding RNA
- GAS5:
-
Growth arrest-specific 5
- GSDMD:
-
Gasdermin D
- HMGB1:
-
High-mobility group box chromosomal protein-1
- lncRNAs:
-
Long non-coding RNAs
- OCN:
-
Osteocalcin
- OPN:
-
Osteopontin
- OP:
-
Osteoporosis
- SNHG1:
-
Small nucleolar RNA host gene 1
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Acknowledgements
We would like to give our sincere gratitude to the reviewers for their constructive comments.
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This work was supported by Changsha Natural Science Foundation (No. kq2202006).
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Conception and design of study: XL. Acquisition of data: KP; DC; YZ. Analysis and interpretation of data: YL; JP. Drafting the manuscript: KP. Revising the manuscript critically for important intellectual content: XL.
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10528_2023_10564_MOESM1_ESM.tif
Supplementary file1 (TIF 47954 kb) Supplementary figure 1. Detection of the interference efficiency of HMGB1 siRNA and VX765. (A-C) Three different sequences of HMGB1 siRNAs were transfected into BMSCs. Then, the expression of HMGB1 mRNA was determined by RT-qPCR, and the expression of HMGB1 protein was determined by Western blotting assay. (D and E) BMSCs were treated with 0, 30, 40, and 50 μM of VX765. The expression of caspase-1 p20 was measured by Western blotting assay. *P < 0.05, **P < 0.01, and ***P < 0.001.
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Pan, K., Lu, Y., Cao, D. et al. Long Non-coding RNA SNHG1 Suppresses the Osteogenic Differentiation of Bone Marrow Mesenchymal Stem Cells by Binding with HMGB1. Biochem Genet (2023). https://doi.org/10.1007/s10528-023-10564-w
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DOI: https://doi.org/10.1007/s10528-023-10564-w