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- W2546960710 abstract "This study was designed to investigate the effect of 10-hydroxycamptothecin (10-HCPT) on osteoclast formation. RAW264.7 cells were cultured in vitro with 100 ng/ml receptor activator for nuclear factor-κ B ligand (RANKL) and 30 ng/ml recombinant macrophage colony stimulating factor (M-CSF), and 10-HCPT with different solubilities were added. After five-day cultivation, tartrate-resistant acid phosphatase (TRAP) staining was used to observe the number of osteoclasts. mRNA expression of osteoclast-specific genes, such as TRAP, cathepsin K (CTSK) and matrix metalloproteinase protease 9 (MMP-9), was detected by real-time Polymerase Chain Reaction (PCR). The effect of 10-HCPT on the proliferation activity of RAW264.7 cells was detected using Cell Counting Kit-8 (CCK-8). CCK-8 detection showed that 10-HCPT with a certain concentration (1 ng/ml to 5 ng/ml) had no effect on cell proliferation (P>0.05); 10-HCPT could inhibit the generation of osteoclasts. With the increase of the concentration of 10-HCPT, the number of osteoclasts generated from cells cultured with 10-HCPT [1 ng/ml (86±11.14), 2 ng/ml (66.67±7.51), 5ng/ml (27.67±6.51)] was much lower than that of the control group (145±8.19), and the difference was statistically significant (all P=0, P less than 0.05); mRNA expression of osteoclast-specific gene TRAP [1 ng/ml (24.38±0.68), 2 ng/ml (20.09±1.86), 5 ng/ml (6.23±0.53)], CTSK [1 ng/ml (10.08±0.81), 2 ng/ml (7.30±0.30), 5 ng/ml (3.20±0.56)] and MMP-9 [1 ng/ml (43.54±6.96), 2 ng/ml (28.28±5.83), 5 ng/ml (11.07±2.53)] was much lower than that of the groups added with RANKL and M-CSF only (all P=0, P less than 0.05), and with the increase of concentration of 10-HCPT, the expression of osteoclast-specific genes showed a decreasing tendency. All the findings suggest that 10-HCPT can inhibit the formation of osteoclasts by reducing the expression of osteoclast-specific genes such as TRAP, CTSK and MMP-9." @default.
- W2546960710 created "2016-11-11" @default.
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- W2546960710 date "2016-09-23" @default.
- W2546960710 modified "2023-09-23" @default.
- W2546960710 title "Effects of 10-hydroxycamptothecin on differentiation of RAW264.7 cells into osteoclasts." @default.
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