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Method for marking eukaryotic cells by taking coptisine as fluorescent probe and application of coptisine

A fluorescent probe, coptisine technology, applied in the field of biomedicine, can solve the problems of not being able to label with living cells well, poor stability, short reagent storage time, etc., and achieves easy preparation and test repeatability, short time-consuming, operation simple effect

Active Publication Date: 2021-06-29
HENAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that this dye is not well used for live cell labeling, and it is suitable for labeling fixed cell RNA, but the reagent has a short storage time and poor stability

Method used

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  • Method for marking eukaryotic cells by taking coptisine as fluorescent probe and application of coptisine
  • Method for marking eukaryotic cells by taking coptisine as fluorescent probe and application of coptisine
  • Method for marking eukaryotic cells by taking coptisine as fluorescent probe and application of coptisine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Fluorescence spectrum of coptisine

[0052] The structure of the yellow-sized alkaline is as follows:

[0053] The tubilate was dissolved with DMSO (Sigma), and the mother liquor concentration was 20 mm / L. 2 μL of mother liquor was taken to 2 ml DMSO to make the yellow alkaline final concentration of 20 μm / L. A new 96-well plate was taken, and 200 μl of diluted tinoids were added to each well; DMSO was used as a blank solvent control. Three complex holes are set up in each group, and the multi-function enzyme labeled instrument is removed. First fixing the emission light wavelength is 550 nm, and the excitation spectrum of the yellow alkali is scanned; then the fixed excitation wavelength is 460 nm, and the scan is obtained to obtain the emission spectrum of the tubilator, such as Figure 1-2 . by Figure 1-2 It can be seen that there are two peaks in the hunal alkali excitation spectrum, and the maximum excitation wavelength of green fluorescence is 460 nm, and the maxim...

Embodiment 2

[0055] The hela cells were placed into the vessel (35mm), and three complex holes were set each set. The cells were removed from the incubator, discard the medium, and wash it once with PBS. Then, a medium obtained by the tuberi (DMEM (GIBCO) (containing 10% FBS)) was diluted to 20 μm / L, and 1.5 ml of medium diluted tantaline (reversed dosing, such as). First incubate 8 h group, incubated 6 h in 2 h, push it in this type), place a cell incubator (37 ° C, 5% CO) 2 The corresponding time was incubated, and the control was incubated with a volume of DMSO with a volume of the xylullette of the experimental group. The cells were taken out from the incubator, discard the medium, and washed 2 times with PBS. 500 μL of 0.25% truncazone (containing EDTA) was added to 2-5 min. Then, 500 μl of DMEM (containing 10% FBS) was added to the dish, and the cells were collected into the centrifugal tube to centrifuge at 500 rpm. Pour the supernatant, the cells were resuspended with PBS and centrif...

Embodiment 3

[0057] Different concentrations of tabtisine labeled cell fluorescence intensity

[0058] Wrap HELA cells to 6-well plates, each set of three complexes. The cells were removed from the incubator, discard the medium, and wash it once with PBS. After the tuberi is diluted with medium (DMEM (containing 10% FBS)) to 20 μm / L, 10 μm / L, 5 μm / L, 1 μm / L, and 1.5 ml of medium diluted noodles per well. Base, place cell incubator (37 ° C, 5% CO 2 Incubate 6 h, the control was incubated with a volume of DMSO with a volume of DMSO with a volume of the experimental group. The cells were taken out from the incubator, discard the medium, and washed 2 times with PBS. To give a 500 μl of 0.25% trunca (containing EDTA) digestion 2-5 min. A 500 μl of DMEM (containing 10% FBS) was then added to each well, and the cells were collected into the centrifugal tube to centrifugally 500 rpm. Pour the supernatant, the cells were resuspended with PBS and centrifuged at 500 rpm for 5 min. After centrifug...

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Abstract

The invention provides application of coptisine and analogues thereof as fluorescent probes in marking nuclei and nucleolus of eukaryotic cells and DNA, and changes of nuclei shapes, sizes and distribution under different stress states are marked in fixed cell nuclei and / or living cell nuclei of the eukaryotic cells. The coptisine and the analogues thereof can enter cells, are positioned in a living cell nucleolus region, are used for carrying out specific fluorescence labeling on cell nucleuses and cell nucleolus, can be used for directly carrying out fluorescence labeling on living or mammalian primary cells fixed by stationary liquid, tumor cells, yeast and cultured plant cell nucleuses and nucleolus, do not generate nucleolus stress reaction, and do not inhibit the synthesis of rRNA. The method is simple to operate, short in time consumption, economical, easy to prepare and good in test repeatability.

Description

Technical field [0001] The present invention relates to a biomedical technology, and in particular, a method and application of a tanamine as a fluorescent probe labeling eukaryotide. Background technique [0002] Coptisine is a natural small molecule compound extracted from Coptis Chinensis (CC), has a wide variety of pharmacological effects. In the current study, the coptisine can reduce the PI3K and AKT 25, down-regulate the PI3K and AKT 25, down-regulate the apoptosis-related protein, etc., and reduce the G1 / S related genes. Expression, etc., prevent tumor adhesion and migration, reduce the conversion of epithelials, promote apoptosis of tumor cells, thereby achieving anti-tumor effect. Coptisine can suppress LPS-induced inflammatory response by blocking the transduction of NF-κB, MAPK, and PI3K / AKT signaling pathway. Coptisine also blocks the ROCK pathway, reducing NADPH oxidase and ROS level to protect the cardiovascular. Coptisine can reduce the glutinous Staphylococcu...

Claims

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Application Information

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IPC IPC(8): G01N21/64C09K11/06
CPCG01N21/6428C09K11/06C09K2211/1033G01N2021/6439
Inventor 胡延忠李慧安双双李静崔秀坤马远方
Owner HENAN UNIVERSITY