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Culture medium composition and method of culturing cells or tissues using same

A technology for culturing cells and compositions, applied in general culture methods, animal cells, cell culture media, etc., can solve the problems of complex cell culture operations in culture vessels, reduced cell viability and reproducibility, etc.

Active Publication Date: 2018-06-22
NISSAN CHEM IND LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, those hepatocyte culture methods have various problems in that the production method of the culture vessel and the operation of cell culture are complicated, the operations of recovering cells from a support such as collagen and evaluating the function of hepatocytes are complicated, and when the support In the case of animal-derived components, since they are expensive, the supply of supports is sometimes limited and cell aggregates (spheres) associate with excessive sizes, thereby reducing cell viability and reproducibility. )Wait

Method used

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  • Culture medium composition and method of culturing cells or tissues using same
  • Culture medium composition and method of culturing cells or tissues using same
  • Culture medium composition and method of culturing cells or tissues using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0286] (Analytical Example 1: Viscosity Measurement and Cell Suspension Test of Medium Containing Deacylated Gellan Gum)

[0287] Preparation and viscosity measurement of medium containing deacylated gellan gum

[0288] Deacylated gellan gum (KELCOGEL CG-LA, manufactured by SANSHO Co., Ltd.) was suspended in purified water to 0.4% (w / v), and dissolved by heating and stirring at 90°C. The aqueous solution was allowed to cool to room temperature with stirring and sterilized in an autoclave at 121 °C for 20 min. Put 2-fold concentration of DMEM / F-12 medium (manufactured by Aldrich, 50 mL) and sterilized water (47.5 mL) into a 300 mL tall beaker while passing through a homomixer (homomixer) at room temperature (3000 rpm ) was stirred, an aqueous deacylated gellan gum solution (2.5 mL) was added, and the mixture was continuously stirred for 1 min to prepare a deacylated gellan gum medium composition with a final concentration of 0.01%. Medium compositions supplemented with aqueou...

experiment Embodiment 1

[0302] (Experimental Example 1: Cell Proliferation Test by Dispersing Single Cells)

[0303] Deacylated gellan gum (KELCOGEL CG-LA, manufactured by SANSHO Co., Ltd.) was suspended in ultrapure water (Milli-Q water) to 0.3% (w / v), and stirred by heating at 90°C to dissolve. The aqueous solution was sterilized in an autoclave at 121° C. for 20 minutes. Using this solution, deacylated gellan gum was added to IMDM containing 10% (v / v) fetal bovine serum and 10 ng / mL thrombopoietin (manufactured by WAKO) at a final concentration of 0.015% (w / v). medium (manufactured by Gibco) to prepare the medium composition. Immediately afterwards, the human leukemia cell line UT7 / TPO was placed in the medium composition supplemented with the above-mentioned deacylated gellan gum to 20000 cells / mL, and dispersed to a 6-well flat-bottomed microculture plate at 5 mL / well (from Corning Incorporated). Similarly, the human cervical cancer cell line HeLa was plated at 20000 cells / mL by adding 0.015...

experiment Embodiment 2

[0307] (Experimental Example 2: Cell proliferation test by culturing cell line-derived spheres)

[0308] The human liver cancer cell line HepG2 (manufactured by DS PHARMA BIOMEDICAL CO., LTD.) was suspended in DMEM medium containing 10% (v / v) fetal bovine serum (manufactured by WAKO) at 250000 cells / mL, and the The suspension (10 mL) was plated on EZ SPHERE (manufactured by ASAHI GLASS CO., LTD.), and 2 Incubator (5% CO 2 ) for 7 days. Similarly, the human cervical cancer cell line HeLa (manufactured by DS PHARMA BIOMEDICAL CO., LTD.) was suspended at 250000 cells / mL in EMEM medium containing 10% (v / v) fetal bovine serum (manufactured by WAKO) , and the suspension (10 mL) was plated on EZ SPHERE (manufactured by ASAHI GLASS CO., LTD.), and 2 Incubator (5% CO 2 ) for 7 days. A suspension (2.5 mL) of spheres (100 - 200 μm in diameter) obtained here for each cell line was centrifuged (200G, 5 min) to allow the spheres to settle, and the supernatant was removed. Next, the ab...

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Abstract

The present invention provides: a method of culturing cells and / or tissues characterized by culturing cells and / or tissues in a floating state using a medium composition, wherein amorphous structures are formed in a liquid medium, uniformly dispersed in a solution And substantially support cells and / or tissues without substantially increasing the viscosity of the solution, so the medium composition has the effect of preventing structural precipitation; and the like.

Description

technical field [0001] The present invention relates to a medium composition containing a structure capable of suspending cells or tissues, and a method of culturing cells or tissues by using the medium composition. The medium composition and the cell culture method using the medium composition of the present invention can be preferably used for culturing cells and / or tissues of animals or plants, especially in a suspension state. Background technique [0002] In recent years, techniques have been developed for in vitro proliferation or maintenance of various organs, tissues and cells that serve different functions in animal and plant organisms. Proliferating or maintaining organs and tissues in vitro is referred to as organ culture and tissue culture, respectively, and proliferating, differentiating or maintaining cells isolated from organs or tissues in vitro is referred to as cell culture. Cell culture is the technique of proliferating, differentiating or maintaining iso...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N1/00
CPCC12N5/0025C12N5/0062C12N5/0068C12N2500/50C12N2533/70A01H4/002A01H4/001C12N2500/30C12N5/0696C12N1/00C12N2500/10C12N5/0018C12N5/0693
Inventor 西野泰斗金木达朗大谷彩子猿桥康一郎户村美沙代岩间武久堀川雅人中辻宪夫尾辻智美
Owner NISSAN CHEM IND LTD