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Device for detecting density-dependent growth inhibition of cells and application thereof

A technology for growth inhibition and detection devices, which is used in biochemical cleaning devices, enzymology/microbiology devices, and microbial determination/inspection. The effect of accurate detection

Inactive Publication Date: 2015-04-22
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, instructing students to understand cancer cells in cell experiments is still limited to slices and static cell morphology observations. Teachers can only instill more advanced theories to students orally or in the form of model diagrams or pictures, and cannot be displayed in a dynamic form. No device has been reported for the use of detection devices, especially the use of specific vessels for the visual display of cell density-dependent growth inhibition or the difference between normal cells and malignant tumor cells

Method used

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  • Device for detecting density-dependent growth inhibition of cells and application thereof
  • Device for detecting density-dependent growth inhibition of cells and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take one plastic Petri dish with a diameter of 80 mm and set it aside.

[0020] Take transparent plastic with the same material as the plastic petri dish, make it into a cylinder whose bottom area is 2 / 3 of the bottom surface area of ​​the petri dish, and the height is 2 / 3 of the height of the petri dish, and then divide the cylinder into 8 pieces along the center of the cylinder Fan-shaped volume wooden blocks, then 4 of them are made into inclined planes from the outer edge of the upper surface to the bottom, and the outer edge of the upper surface of the inclined plane has a distance of 0.8mm from the bottom surface of the petri dish, and the four building blocks with inclined planes are respectively Named A, B, C, D, the included angles formed by the bottom surface of the slope and the outer edge of the upper surface of the body are 15 degrees, 25 degrees, 32 degrees, 42 degrees (such as figure 2 shown). Divide the 8 fan-shaped volume blocks into two types accordi...

Embodiment 2

[0022] Take the cell density-dependent growth inhibition detection device prepared in Example 1, soak and disinfect it with 75% medical alcohol for more than 2 hours, rinse it three times with distilled water, dry it, put it in an ultra-clean workbench and irradiate it with ultraviolet rays for 30 minutes before use.

[0023] Take the experimental cells in the logarithmic growth phase (vascular endothelial cells, liver cancer cells, gastric cancer cells or embryonic lung fibroblasts) that grow on the wall, digest them and make a single cell suspension, and adjust the cell concentration to 10 7 ~10 8 pc / ml, add it to the cell culture observation area in the detection device in an amount that just covers the bottom surface, cover the above detection device, and place it in 5% CO 2 , in an incubator at 37°C and 100% relative humidity until the cells adhere to the wall, and then add culture medium to the culture dish, so that the amount of culture medium is 2 / 3 of the height of th...

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Abstract

The invention discloses a device for detecting the density-dependent growth inhibition of cells. The device comprises a culture vessel and 6-10 transparent plastic building blocks; the building blocks are shaped like fans, can be assembled together to form a cylinder and are fixed in the center area of the culture vessel; the area in the culture vessel, except the area occupied by the cylinder, serves as a cell culture observation area; 1 / 2 of the fan-like building blocks for forming the cylinder can be released from fixation, and 1 / 2 of the fan-like building blocks are provided with inclined surfaces which extend to the bottom surface of the culture vessel from the outer edges of the top surfaces of the fan-like building blocks; the outer edge of the top surface of each fan-like building block keeps a distance of 0.5-1.5mm with the bottom surface of the culture vessel, and included angles of 15-42 degrees are formed between the inclined surfaces and the bottom surface of the culture vessel. The invention further discloses application of the device to the dynamic observation of growth and contact inhibition of cells to be detected and the identification of normal cells and malignant tumour cells. The device is a tool provided for experiment teaching to detect the contact inhibition of cells intuitively, conveniently, flexibly and accurately.

Description

technical field [0001] The invention relates to a cell proliferation regulation detection device and application, in particular to a cell density-dependent growth inhibition detection device and application. Background technique [0002] Cells stop dividing when they come into contact with each other during growth. Since growth inhibition occurs when growth factors in the medium are depleted, the phenomenon that normal cells inhibit division due to mutual contact is also called density-dependent inhibition of growth. Malignant cells cultured under the same conditions lose their sensitivity to density-dependent growth inhibition, so they do not stop growing when they form a single layer, but accumulate on each other to form multi-layered growth aggregates, which also shows that The growth and division of malignant cells are out of control, and the signals that regulate the normal growth and division of cells no longer work on malignant cells. Therefore, using a specific det...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12M1/34C12Q1/04
CPCC12M41/36
Inventor 张尚立赵静马剑锋彭正华屈坤
Owner SHANDONG UNIV
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