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Microfluidic chip for simulating embryo implantation angiogenesis and preparation method and use thereof

A microfluidic chip and angiogenesis technology, applied in biochemical equipment and methods, embryonic cells, vascular endothelial cells, etc., can solve the problems of lack of angiogenesis research, lack of angiogenesis model, lack of angiogenesis research, etc., to achieve Realize large-scale, high-throughput drug screening and realize the effect of automation

Active Publication Date: 2021-08-24
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] However, most of these studies have focused on cancer, and research on angiogenesis during embryo implantation is still lacking.
The current three-dimensional blood vessel model is mainly aimed at the construction of blood vessels and the influence of growth factors and cell secreted factors on angiogenesis, as well as the screening of drugs in the process of tumor angiogenesis. Angiogenesis Study During Implantation

Method used

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  • Microfluidic chip for simulating embryo implantation angiogenesis and preparation method and use thereof
  • Microfluidic chip for simulating embryo implantation angiogenesis and preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Example 1: Observation of the cause of angiogenesis in embryo implantation using a dual-pipe chip.

[0062] The specific preparation method is as follows:

[0063] Firstly, a double-pipe chip was prepared, and the positive control group, the negative control group, the embryo group, the endometrium group, and the embryo and endometrium co-culture group were carried out during the embryo implantation process. In the positive control group, 50ng / mL VEGF was added to the sample chamber, and the same amount of fertilized egg medium CZB was added to the sample chamber of the negative control group, and cultured for 24 hours to observe the effect on angiogenesis. In the embryo group, the embryos developed to the blastocyst stage were put into the sample chamber, and 10 embryos were placed in each sample chamber, and cultured for 24 hours. In order to prevent the liquid in the pipeline from evaporating to dryness, the liquid should be changed every 8-10 hours. In the endomet...

Embodiment 2

[0064] Example 2: Carrying out the screening of drugs related to inhibiting angiogenesis

[0065] All 19 inhibitors related to angiogenesis in the FDA drug library of the Selleck inhibitor platform were screened out. A dual-channel three-dimensional angiogenesis chip was constructed, drugs were added to the sample chamber, and co-cultured with three-dimensional vessels for 24 hours to observe the effect of drugs on vessel sprouting. Two parallel experiments were performed on the samples under each condition, and budding images of each experiment were acquired with a microscope (OLYMPUS IX73). The number of sprouts in each group was counted. Sprout lengths were measured using Image J software, and t-tests were used to determine whether there were significant differences between samples. A P value of less than 0.05 was considered to be significantly different. Screen out drugs that can significantly inhibit angiogenesis.

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Abstract

The invention discloses a microfluidic chip for simulating embryo implantation angiogenesis, a preparation method and application thereof, and belongs to the technical field of microfluidic chips. A microfluidic chip that simulates embryo implantation angiogenesis is formed by bonding the surface layer of the chip and the substrate. The surface layer of the chip includes two main pipes and connecting pipes connecting the main pipes. One end of each main pipe is connected to the inlet and the other end is connected to the Outlet; one main pipe is used to form a three-dimensional blood vessel lumen, which is formed by multiple curing of hydrogel; the other main pipe is used as a sample chamber, and the substance in one main pipe can diffuse to the other through the connecting pipe inside the main pipe. The invention has the following advantages: the chip realizes the co-cultivation of endometrial cells and embryos; realizes the in vitro observation of angiogenesis during the implantation process; the preparation and operation methods are simple, and it is beneficial to realize large-scale and high-throughput drug screening .

Description

technical field [0001] The invention belongs to the technical field of microfluidic chips, and relates to a dual-channel microfluidic chip for simulating angiogenesis in the process of embryo implantation and a preparation method thereof, and also relates to the application of the microfluidic chip to carry out angiogenesis in the process of embryo implantation Methods of observation, mechanism exploration and related drug screening. Background technique [0002] At present, there are 50-80 million infertile couples in the world, and on average, one out of every six couples of childbearing age suffers from reproductive problems. A critical period in reproduction is the implantation period, which is the only period in which the embryo can implant in the uterus. Before or after this period, the fertilized egg cannot implant in the mother's body, resulting in the failure of conception. During implantation, angiogenesis plays an important role. Studies have proved that suffici...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N5/071C12N5/073C12M3/00
CPCC12M21/18C12M23/16C12N5/0604C12N5/0691C12N2502/025
Inventor 刘冉司清蕊闫一默
Owner TSINGHUA UNIV