New application of saikosaponin C in inhibiting neuroinflammation
A technology of neuroinflammation and saikosaponin, applied in the field of medicine, can solve problems such as saikosaponin C that has not been seen yet
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Embodiment 1
[0029] Embodiment 1: Griess colorimetric method investigates the inhibitory effect of saikogenin C on LPS-induced microglia nitric oxide (NO) release;
[0030] Cell line: mouse microglial cell line BV-2;
[0031] Drugs: LPS; saikosaponin C; minocycline (MINO).
[0032] method:
[0033] (1) Culture of mouse microglial cell line BV-2:
[0034] The cell culture solution was prepared based on DMEM medium, containing 10% FBS, 100 U penicillin and 100 U streptomycin, and 50 μM 2-mercaptoethanol (all final concentrations). at 5% CO 2 , under the condition of 37 ℃, the BV-2 microglial cells were divided into about 4×10 5 The cell density of cells / ml was cultured in a cell culture incubator, and the growth of the cells was observed regularly. When the area of the cell adherence accounted for about 50-60% of the bottom area of the culture flask, the cells were digested with trypsin and passaged, and then continued to culture. Take 3-7 generations of cells for experiments.
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Embodiment 2
[0042] Example 2: The DCFH oxidation method was used to investigate the effect of saikosapogenin C on the release of reactive oxygen species (ROS) from microglial cells induced by LPS;
[0043] Cell line: mouse microglial cell line BV-2;
[0044] Drugs: LPS; saikosaponin C; MINO.
[0045] Experimental principle: DCFH-DA (2′,7′-dichlorodihydrofluororescein diacetate) can enter the cell and undergo a deacetylation reaction to generate DCFH. DCFH is a non-fluorescent substance, which can be oxidized by intracellular ROS to generate fluorescent substance DCF, and the amount of ROS release can be reflected by detecting the fluorescence intensity. The specific operation steps are as follows: DCFH-DA was dissolved in pure methanol to prepare a mother solution with a concentration of 10 mM, and the mother solution was diluted 500 times with Hank's balanced salt solution (HBSS) to a final concentration of 20 μM before use. Take the BV-2 cells after drug treatment, suck the supernatant,...
Embodiment 3
[0049] Example 3: The effect of saikosapogenin C on the release of LPS-induced microglial tumor necrosis factor α (TNF-α) and interleukin 1β (IL-1β) by ELISA;
[0050] Cell line: mouse microglial cell line BV-2;
[0051] Drugs: LPS; saikosaponin C; MINO.
[0052] Detection method: Take BV-2 cells in the logarithmic growth phase, inoculate the cells in a 6-well plate with fresh serum-free DMEM medium, and the cell density is 3×10 5 cells / ml, inoculum volume 600μl / well, placed in an incubator at 37°C, 5% CO 2 cultivated under conditions. After the cells adhered to the wall for 3 hours, the culture solution was carefully sucked out, and according to the experimental group, the cells were replaced with different drugs prepared in serum-free DMEM culture solution to incubate the cells. At the same time, a blank control group was set up, and each group was set with 3 replicate wells, and the drug addition to the cells continued. After culturing for 2-4 hours, collect the supernat...
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