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Separation method and application of hepatic cells peripheral to pig portal veins or hepatic cells peripheral to hepatic veins

A technology of liver cells and portal vein, which is applied in the field of separation of liver cells around pig portal vein or liver cells around hepatic vein, to achieve the effect of improving cell viability

Active Publication Date: 2016-01-06
HUAZHONG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there are no research reports and patents on the successful isolation of hepatocytes around the portal vein and around the hepatic vein in pigs.

Method used

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  • Separation method and application of hepatic cells peripheral to pig portal veins or hepatic cells peripheral to hepatic veins
  • Separation method and application of hepatic cells peripheral to pig portal veins or hepatic cells peripheral to hepatic veins

Examples

Experimental program
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Effect test

Embodiment 1

[0038] A method for separating liver cells around the pig portal vein, comprising the following steps:

[0039] 1) The distal hepatic end of the posterior vena cava of the fresh pig liver was ligated, and a portal vein catheter was installed. Use perfusion solution A preheated at 37°C, perfuse from the portal vein at a rate of 35ml / min, and continue perfusing until the cannula near the hepatic end of the posterior vena cava is successfully installed;

[0040] Described fresh pork liver is piglet fresh pork liver;

[0041] The specific formula of described perfusion solution A comprises: 6.9g / L sodium chloride, 0.35g / L potassium chloride, 0.28g / L calcium chloride, 0.14g / L magnesium sulfate, 0.27g / L potassium dihydrogen phosphate , 2.1g / L sodium bicarbonate, 2.0g / L glucose, adjust the pH to 7.4, filter and sterilize with a 0.22μm microporous membrane, and store at 4°C after aliquoting.

[0042] 2) Separation and perfusion of hepatocytes around the portal vein: Use perfusion so...

Embodiment 2

[0054] A method for isolating hepatocytes around pig liver veins, comprising the following steps:

[0055] 1) The distal hepatic end of the posterior vena cava of the fresh pig liver was ligated, and a portal vein catheter was installed. Use perfusion solution A preheated at 37°C, perfuse from the portal vein at a rate of 35ml / min, and continue perfusing until the cannula near the hepatic end of the posterior vena cava is successfully installed;

[0056] Described fresh pork liver is piglet fresh pork liver;

[0057] 2) Separation and perfusion of hepatic cells around the hepatic vein: use preheated perfusion solution A1 at 37°C to perfuse from the portal vein at a rate of 10ml / min, and stop perfusion until a uniform white network appears on the surface of the liver; after 10s, From the posterior vena cava, perfuse with perfusion solution B1 preheated at 37°C at a rate of 50ml / min for 10-15min, until the fluid outflowing from the portal vein becomes clear;

[0058] 3) Separa...

Embodiment 3

[0064] Detection of cell viability:

[0065] The single cell suspension resuspended in the basal medium obtained in Example 1 and Example 2 was mixed with 0.4% trypan blue staining solution at a volume ratio of 1:1, and 20 μL of the mixed solution was quickly added to a hemocytometer ( purchased from Shanghai Qiujing Biochemical Reagent Instrument Co., Ltd.) and covered with a coverslip. Place it under an inverted microscope to count the number of dead cells and living cells, and calculate the cell viability (dead cells can be stained with trypan blue and appear dark blue under the microscope, live cells are not stained and appear colorless and transparent under the microscope) and Cell density. The specific preparation method of the 0.4% trypan blue staining solution is as follows: weigh 0.4 g of trypan blue solid and dissolve it in 100 ml of PBS buffer.

[0066] By the method described in Example 1 or Example 2, the number of living cells of the isolated cells was 4.5×10 ...

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Abstract

The invention discloses a separation method and application of hepatic cells peripheral to pig portal veins or hepatic cells peripheral to hepatic veins. By means of the method, a great number of hepatic cells peripheral to the portal veins or hepatic cells peripheral to the hepatic veins which are high in activity can be separated out of a pig liver, the obtained cells can maintain good morphological characteristics, hepatocellular functions and cell multiplication activity of primary hepatic cells, and a basis is provided for separation and identification of the hepatic cells peripheral to the portal veins or the hepatic cells peripheral to the hepatic veins, in vitro study on cell metabolism differences of the hepatic cells peripheral to the portal veins or the hepatic cells peripheral toward the hepatic veins and deeper exploration on liver nutrient substance metabolism.

Description

technical field [0001] The invention belongs to the field of biotechnology, and in particular relates to a method and application for separating pig portal vein hepatocytes or hepatic vein hepatocytes. technical background [0002] The liver is the largest digestive gland and metabolic organ in the body. It carries a variety of important physiological functions such as secretion, metabolism, and detoxification, and plays a pivotal role in regulating metabolism. As the center of substance metabolism in the body, the liver plays a very important role in the metabolism of the three major nutrients. Nutrients from the diet and blood enter the liver through the portal vein and hepatic artery, where they are processed and transformed into proteins, amino acids, fats, glucose, etc., and are exported from the hepatic vein into the blood circulation for use by extrahepatic tissues. The role of redistribution. [0003] However, the liver is not a simple solid organ in the traditiona...

Claims

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Application Information

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IPC IPC(8): C12N5/071
Inventor 黄飞若张萍包正喜李鲁鲁罗杰
Owner HUAZHONG AGRI UNIV
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