Application of kinsenoside to preparation of medicines for eliminating brain amyloid beta protein clots
A technology of amyloid and aureus glycosides is applied in the directions of drug combination, pharmaceutical formulation, medical preparation containing active ingredients, etc., which can solve the problem of difficulty in taking both Aβ plaque clearance and inhibition of neuroinflammation, strong neuroinflammation response, and effective It can achieve good clinical application prospects, inhibit neuroinflammation, and improve learning and cognitive functions.
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Embodiment 1
[0035] Example 1 Experiment of improving mitochondrial energy metabolism of microglial cells with auroside
[0036] An important hallmark of microglial aging is decreased cellular aerobic respiration, resulting in decreased ATP production and decreased phagocytic clearance.
[0037] The basal oxygen consumption capacity (OCR) of cells treated with auroside was detected by Seahorse XF Mito Stress Test Kit (Agilent Technologies). The specific steps are as follows: ① first inoculate BV2 microglial cells into XF 96-well cell culture plate (5000 cells / well), and divide them into two groups on average, with 6 wells in each group; ② add solvent control DMSO to the cells in the two groups at 12 hours and anointing solution (final concentration: 20 μM), respectively as the control group and auroglucoside group, each treated 6 replicate wells, and continued to culture for 24 hours; ③ Discard the medium, wash it twice with PBS, and then add In XF medium, XFe 96 ExtracellularFlux analyz...
Embodiment 2
[0043] Example 2 Experiment of auroside inhibiting inflammation of microglial cells
[0044] Lipopolysaccharide (LPS) was used to stimulate microglia to induce M1-type inflammatory response as a model of microglial inflammation.
[0045] BV2 microglial cells were seeded in a 12-well cell culture plate, 100,000 cells / well, and after 12 hours, they were pretreated with auroside with a final concentration of 20 μM (the molar concentration of the stock solution was 80 mM) for 1 hour. The cells pretreated with auroglutinin were used as the control group, and then treated with LPS (final concentration 1 μg / ml) for 12 hours and 24 hours, respectively, and then the cells were lysed with Trizol reagent to extract RNA. After the RNA was extracted, 1 μg of total RNA was taken from each sample and reverse-transcribed with random primers using reverse transcriptase to obtain cDNA. The expression of the internal reference gene β-actin and M1-type inflammatory factors IL-6, TNF-α and iNOS...
Embodiment 3
[0056] Example 3-Auroglutin enhances microglia phagocytosis of amyloid protein experiment
[0057] The phagocytosis of oligomerized amyloid Aβ1-42 (AD marker) by primary microglia was used as a model.
[0058] The primary microglial cells were inoculated in a 24-well plate with cell slides, and after 12 hours, they were pretreated with auroside with a final concentration of 20 μM (the molar concentration of the stock solution was 80 mM) for 1 hour, and another unused gold wire was taken The cells pretreated with lotus root were used as the control group, and then FITC-labeled amyloid Aβ1-42 oligomers were added. After reacting for 6 hours, the cells were washed with pre-cooled PBS buffer for 3 times to remove unphagocytosed amyloid, and then treated with Cells were fixed with 4% formaldehyde solution, and then microglia were labeled by immunofluorescent staining.
[0059] Immunofluorescence staining steps are: ① 500 μl 0.5% Triton X-100 incubated at room temperature for 20 ...
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