Applications of 18beta-glycyrrhetinic acid in preparation drugs for diseases related to abnormal lipid metabolism
A technology for abnormal lipid metabolism and glycyrrhetic acid, which is applied in the application field of 18β-glycyrrhetic acid in the preparation of drugs for diseases related to lipid metabolism abnormality, and can solve the problem that the pharmacological action mechanism of 18β-glycyrrhetic acid lipid metabolism disorder diseases has not been found. , to reduce the degree of liver fat, improve liver function, reduce blood lipids
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Embodiment 118
[0054] Example 1.18 β-GA interferes with the experiment of HNF4a ligand-binding domain (LBD) interacting with co-activator PGC1a:
[0055] The experimental method is as follows:
[0056] Experimental group: Hela cells were treated with 1.5×10 4 The density per well was seeded on a 96 plate, with 3 replicate wells in each group; after the cells adhered to the wall, the internal reference plasmid pRL-TK, reporter plasmid pFR-Luc, DBD-HNF4a-LBD, and PGC1a were passed through using Lipofectamine3000 transfection reagent. The expression plasmid co-transfected cells were cultured for 24 hours, given as figure 1 The indicated 10μM, 20μM, 40μM different concentrations of 18β-GA were treated for 24 hours;
[0057] Control group: treated with reference to the experimental group, without adding 18β-GA;
[0058] Blank group: Hela cells.
[0059] After the experimental group, control group and blank group have been cultured, absorb the culture medium of each group, wash the cells with ...
Embodiment 218
[0061] Example 2.18 β-GA inhibits the activity of HNF4α / PGC-1a on the promoters of APOB, MTP and PLA2G12B genes:
[0062] The experimental method is as follows:
[0063] Experimental group: Hela cells were treated with 1.5×10 4 The density per well was inoculated on a 96 plate, and each group had 3 duplicate wells; the internal reference plasmid pRL-TK, the promoter reporter plasmid pGL3-PLA2G12B, MTP and APOB were respectively co-transfected with HNF4a and PGC1a expression vectors and cultured for 24 hours. Give different concentrations of 18β-GA treatment for 24 hours;
[0064] Control group: treated with reference to the experimental group, without adding 18β-GA;
[0065] Blank group: Hela cells.
[0066] After the experimental group, control group and blank group have been cultured, absorb the culture medium of each group, wash the cells with PBS, add 50 μl of cell lysate, shake and lyse the cells for 30 minutes; suck out 25 μl of lysate for each well, add 30 μl of luci...
Embodiment 318
[0068] Example 3.18 Experiment on the influence of β-glycyrrhetinic acid on key genes of lipid metabolism in liver cancer cells HepG2:
[0069] The experimental method is as follows:
[0070] HepG2 cells were divided into 6×10 4 The density of / mL was inoculated in a 6-well plate and cultured for 24 hours, the medium was replaced with DMEM containing 0.5% FBS, and the cells were treated according to the control group (DMSO) and the administration group (18β-GA 40μM). Discard the medium, wash with PBS, add Trizol to lyse the cells, extract the total RNA in the cells, and prepare cDNA by reverse transcription. The system is shown in Table 1 below:
[0071] Table 1. Reverse transcription system
[0072]
[0073] Reverse transcription PCR conditions:
[0074] Reaction: 42°C (60min), termination reaction: 70°C (5min). After the reverse transcription product was diluted 25 times, Realtime RCR detection was performed.
[0075] The Real time PCR reaction system is shown in Tab...
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