The New Application of Levocordate Derivatives
A compound and the technology of tumor neovascularization, applied in the field of application of levocordate derivatives in the field of neovascularization inhibitors, can solve the problems of no microcirculation function, disordered distribution mode, etc.
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Embodiment 1
[0028] Embodiment 1, the inhibitory experiment of levocordate derivatives on the proliferation of human umbilical vein endothelial cells (HUVEC)
[0029] 1. Materials:
[0030] Tetramethylazolazolium Blue (MTT): Dissolve MTT in 0.01M phosphate buffered saline (PBS) to a final concentration of 5 mg / ml, filter and sterilize, and store in the dark at 4°C after aliquoting.
[0031] Cell line: human umbilical vein endothelial cells (HUVEC) (purchased from Peking Union Medical College Cell Resource Center);
[0032] 2. The specific operation steps are as follows:
[0033] 1) Refer to relevant literature methods (Chinese Journal of Pharmacology and Toxicology, 2011, 25(6): 543-545; Acta Pharmaceutica Sinica, 2009, 44(12): 1359-1363; Mechanism study, Chinese Journal of Pharmaceutical Sciences of PLA, 2010,26(6):489-492), human umbilical vein endothelial cells in the logarithmic growth phase
[0034] (HUVEC) was made into cell suspension, and each well of a 96-well plate was inocula...
Embodiment 2
[0043] Example 2, MTT reduction method to detect the in vitro anticancer activity test of L-tetrahydropalmatine derivatives
[0044] The basic principle of the MTT method is: Tetrazolium [MTT, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-tetrazolium bromide] is a dye that can accept hydrogen atoms. The dehydrogenase associated with nicotinamide adenine dinucleotide phosphate (NADP, nicotinamide adenine dinucleotide phosphate) in the mitochondria of living cells can convert yellow MTT into insoluble blue-purple formazan in cells, while dead cells have no this function. After dissolving formazan with dimethyl sulfoxide (DMSO, Dimethyl sulfoxide), the optical density value is measured with a microplate reader at a certain wavelength, and the survival rate of the cells can be quantitatively measured.
[0045] 1. Materials:
[0046] Tetrazolium salt (MTT): Dissolve MTT in 0.01M phosphate buffered saline (PBS) to a final concentration of 5 mg / ml, filter and sterilize, and store in th...
Embodiment 3
[0060] Embodiment 3, the chicken embryo chorioallantoic membrane method (CAM) measures the inhibitory experiment of levocordate derivatives (III, IV or V) to neovascularization
[0061] Chicken chorioallantoic membrane (chick embryo chorioallantoic membrane, CAM) is formed in the early embryo, at this time, the immune system of the chick embryo body has not been fully established, and there is almost no rejection reaction to various foreign bodies. The drug carrier is placed on its surface, The effect of drugs on angiogenesis can be observed. The chicken embryo model is sensitive to anti-angiogenic drugs and is currently used in drug screening [Ribatti D.The chick embryo chorioallantoic membrane in the study of tumor angiogenesis[J].Rom J Morphol Embryol,2008, 49(2):131-135; Ribatti D. The chick embryo chorioallantoic membrane as an in vivo assay to study antiangiogenesis [J]. Pharmaceuti cals, 2010, 3(3): 482-513.].
[0062] The specific operation of the experiment is as foll...
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