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Human glomerular endothelial cell culture and drug detection toxicity evaluation method based on micro-fluidic chip

A microfluidic chip and endothelial cell technology, applied in artificial cell constructs, biochemical equipment and methods, microbial measurement/inspection, etc., can solve problems such as lack of models, poor predictive ability, and rising costs of developing new drugs. achieve precise results

Pending Publication Date: 2022-04-12
NAT INST FOR NUTRITION & HEALTH CHINESE CENT FOR DISEASE CONTROL & PREVENTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The poor predictive ability of the existing in vitro toxicology evaluation models hinders the progress of pharmaceutical research and development to a large extent. Establishing and developing reliable in vitro toxicology evaluation alternative models can effectively improve the accuracy of evaluation data, but the existing It is necessary to determine its drug efficacy and safety or its evaluation data through a series of toxicological evaluation methods including animal experiments and in vitro experiments. The existing technology has not yet established a human glomerular endothelial cell model that mimics the human environment, resulting in preclinical The lack of models and their poor predictive ability have led to the failure of a large number of drugs in clinical trials and the increase in the cost of developing new drugs. Reliable in vitro toxicological evaluation of alternative models and cultivation in a human-like environment are urgent needs in the field of pharmaceutical research and development

Method used

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  • Human glomerular endothelial cell culture and drug detection toxicity evaluation method based on micro-fluidic chip
  • Human glomerular endothelial cell culture and drug detection toxicity evaluation method based on micro-fluidic chip
  • Human glomerular endothelial cell culture and drug detection toxicity evaluation method based on micro-fluidic chip

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Experimental program
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Effect test

Embodiment 1

[0061] In this embodiment, the specific implementation steps are as follows

[0062] Step 1, chip pretreatment: suck out the moisturizing solution in the wells of the 1-6 columns of the liquid inlet holes and the 7th and 8th columns of the liquid drainage holes of the microfluidic cell chip, and pour PBS buffer into the wells 1-8, and then Aspirate and discard the PBS buffer in wells 1-8, add 325ul of PBS buffer into wells 1-6 again, seal and let stand at room temperature for 35min, and finally cover the microfluidic cell chip and the chip cover plate The microfluidic cell chip is rinsed and sterilized, and the gel pad is cleaned, sterilized, ultra-static and dried, and then placed on the microfluidic cell chip for standby;

[0063] Step 2, cell inoculation: empty the liquid in the No. 6 well of the microfluidic cell chip, and then add a concentration of 2x10 to the No. 6 well. 6 cells / ml of human glomerular endothelial cell solution 15ul, at the same time add 350ul of serum-...

Embodiment 2

[0074] In this embodiment, the difference from Embodiment 1 is that

[0075] Step 1: During chip and processing, add 300ul of PBS buffer solution into wells 1-6 again, seal and let stand at room temperature for 40min;

[0076] Step 2, during cell inoculation, add a concentration of 1x10 to the No. 6 well 6 cells / ml human glomerular endothelial cell solution 14ul;

[0077] Step A, in the test preparation, the test substance is centrifuged at 12000rpm for 8min, and the injection pressure of the No. 2 hole is set to 0.5psi;

[0078] Step B, activity assay, set pressure 3 psi, temperature 37 °C, in 5% CO 2 The conditions of gas concentration were incubated for 1 h.

Embodiment 3

[0080] In this embodiment, the difference from Embodiment 1 is that

[0081] Step 1: During chip and processing, add 350ul of PBS buffer solution into wells 1-6 again, seal and let stand at room temperature for 30min;

[0082] Step 2, during cell inoculation, add a concentration of 5x10 to the No. 6 well 6 cells / ml human glomerular endothelial cell solution 10ul;

[0083] Step A, in the test preparation, the test substance is centrifuged at 12000rpm for 10min, and the injection pressure of hole 2 is set to 1psi;

[0084] Step B, activity assay, set pressure 3 psi, temperature 37 °C, in 5% CO 2 The conditions of gas concentration were incubated for 4h.

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Abstract

The invention relates to a human glomerular endothelial cell culture and drug detection toxicity evaluation method based on a micro-fluidic chip, and the specific culture method comprises the following steps: carrying out cell culture and test by using a micro-fluidic cell chip analyzer, and specifically comprises the following steps: 1, preprocessing the chip; step 2, cell inoculation; step 3, cell culture; after cell culture is completed, successfully cultured cells are used for subsequent drug evaluation detection, and the method specifically comprises the following steps: step 1, preparation for detection; 2, detecting the concentration of LDH; step 3, activity detection; in addition, living and dead cell staining, immunofluorescence detection and inflammatory cytokine detection can also be used, the temperature and gas components of a cell growth area can be accurately regulated and controlled by implementing the steps, an external incubator is omitted, long-term continuous observation of cells under a microscope is achieved, and the detection accuracy is improved. The microfluidic cell model can better simulate the human body microenvironment, and the drug evaluation effect is more accurate.

Description

Technical field: [0001] The invention relates to the fields of cell culture and drug toxicity detection and evaluation, in particular to a microfluidic chip-based culture of human glomerular endothelial cells and a method for drug detection and toxicity evaluation. Background technique [0002] The poor predictive ability of the existing in vitro toxicology evaluation models hinders the progress of pharmaceutical research and development to a large extent. Establishing and developing reliable in vitro toxicology evaluation alternative models can effectively improve the accuracy of evaluation data, but the existing It is necessary to determine its drug efficacy and safety or its evaluation data through a series of toxicological evaluation methods including animal experiments and in vitro experiments. The existing technology has not yet established a human glomerular endothelial cell model that mimics the human environment, resulting in preclinical The lack of models and their...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N5/071C12Q1/26C12Q1/02G01N21/31G01N1/30G01N33/68B01L3/00
Inventor 杨倬秦文霍军生陈頔殷继永黄建朴玮王晶波王丽媛卓勤宫照龙
Owner NAT INST FOR NUTRITION & HEALTH CHINESE CENT FOR DISEASE CONTROL & PREVENTION
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