Abstract
Background
DSH-20, the active ingredient of Salvia miltiorrhiza flower extract, is used to treat cardiovascular diseases. However, its mechanism of action remains unclear. Herein, we investigated the intervention of DSH-20 in H2O2-induced oxidative damage and apoptosis in cardiomyocytes.
Methods and Results
H2O2 was used to induce oxidative damage and apoptosis in H9c2 cardiomyocytes. Based on concentration gradient studies, we found that 62.5 µg/mL DSH-20 significantly reduced reactive oxygen species and lactate dehydrogenase levels and increased superoxide dismutase levels. DSH-20 also alleviated the apoptosis rate, the changes in mRNA of apoptosis-related genes (Bcl-2, BAX, and Caspase-3) and miR-1 expression. Moreover, transfection of miR-1 mimics aggravated oxidative damage and apoptosis, whereas DSH-20 alleviated these effects.
Conclusions
DSH-20 reduced H2O2-induced oxidative damage and apoptosis in H9c2 cardiomyocytes likely by downregulating miR-1 expression.
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Funding
This study was supported by grants from the National Natural Science Foundation of China (No. 81673800).
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PC, LD, and HW were responsible for the study design. PC and HW wrote or contributed to the writing of the manuscript. PC, YX, MG, ZL, SG, XW, HG, YH, HC, and SL performed most of the experiments and data analysis. All authors read and approved the final manuscript.
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11033_2022_7207_MOESM1_ESM.tif
Fig. S1 DSH-20 treatment improved cell viability of H9c2 cardiomyocytes by inhibiting the decline induced by H2O2. A H9c2 cardiomyocytes were stimulated using a gradient concentration (0–500 µM) of H2O2 for 6 h, and CCK8 reagent was used to determine cell viability. B H9c2 cardiomyocytes were treated with a gradient concentration (0–1000 µg/mL) of DSH-20 for 48 h, and CCK8 was used to determine cell viability. C H9c2 cardiomyocytes were treated with a gradient concentration (0–1000 µg/mL) of DSH-20 for 48 h. After H2O2 stimulation for 6 h, CCK8 was used to determine cell viability. Data are expressed as the mean ± SD of three independent experiments. Compared with the blank group, *P < 0.05, **P < 0.01; compared with H2O2 group, &P < 0.05, &&P < 0.01; compared with 62.5 µg/mL DSH-20+H2O2 group, ##P < 0.01. Supplementary material 1 (TIF 129.2 kb)
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Cao, P., Xue, Y., Guo, M. et al. The active ingredient (DSH-20) of Salvia miltiorrhiza flower reduces oxidative damage and apoptosis in cardiomyocytes by regulating miR-1. Mol Biol Rep 49, 3675–3684 (2022). https://doi.org/10.1007/s11033-022-07207-5
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DOI: https://doi.org/10.1007/s11033-022-07207-5