WO2004106501A1 - 単球株化細胞の凍結保存方法及び該方法に利用される培地 - Google Patents
単球株化細胞の凍結保存方法及び該方法に利用される培地 Download PDFInfo
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- WO2004106501A1 WO2004106501A1 PCT/JP2004/007497 JP2004007497W WO2004106501A1 WO 2004106501 A1 WO2004106501 A1 WO 2004106501A1 JP 2004007497 W JP2004007497 W JP 2004007497W WO 2004106501 A1 WO2004106501 A1 WO 2004106501A1
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- medium
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- cryopreservation
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/0018—Culture media for cell or tissue culture
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/06—Animal cells or tissues; Human cells or tissues
- C12N5/0602—Vertebrate cells
- C12N5/0634—Cells from the blood or the immune system
- C12N5/0645—Macrophages, e.g. Kuepfer cells in the liver; Monocytes
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2500/00—Specific components of cell culture medium
- C12N2500/30—Organic components
- C12N2500/34—Sugars
Definitions
- the present invention relates to a cryopreservation method of a cell line and a medium used in the method, and more particularly, to a cryopreservation method of an animal monocyte cell line and a medium used in the method.
- Cryopreservation of cells is performed to prevent cell deterioration due to passage, to prevent contamination by various bacteria, and to reduce the complexity of maintaining the passage.
- the culture media for cryopreservation of cells that have been used to date include, usually, fetal calf serum (hereinafter abbreviated as "FBS") and 5-15% dimethyl sorboxide (hereinafter “FBS”).
- FBS fetal calf serum
- FBS 5-15% dimethyl sorboxide
- DMSO fetal calf serum
- glycerin glycerin
- the preservation method is common.
- the advantage that DMSO has long been used for cryopreservation of cells as the medium is that when the ice crystals present in the cells during the cryopreservation are increased and then the cells are thawed from the preservation state, It is said that cells are not killed.
- Non-Patent Document 1 Journal of Immunological Methods 272 (2003) 35-48
- Non-Patent Document 2 New Microbiologica, 23: 441-444
- Non-Patent Document 3 New Microbiologica, 24: 243-247
- an object of the present invention is to provide a cryopreservation method suitable for animal monocyte cell lines and a medium used in the method.
- the object is a method for cryopreservation of a monocyte cell line, comprising: (1) dispersing the monocyte cell line in a medium containing a monosaccharide and serum to prepare a dispersion liquid; 2) freezing the dispersion and storing it under liquid nitrogen.
- the monosaccharide is glucose
- the concentration of the glucose is at least 5% by weight based on the total weight of the medium.
- the above method is characterized in that the serum is fetal calf serum.
- a medium for cryopreservation of a monocyte cell line comprising a monosaccharide and serum.
- the monosaccharide is glucose.
- the glucose concentration is at least 5% by weight based on the total weight of the medium.
- the serum is fetal calf serum.
- a cryopreservation method and a cryopreservation medium useful for monocyte cell lines are provided by using the medium according to the present invention containing serum and glucose which is a monosaccharide.
- Animals used in the present invention are not particularly limited, and include dogs, pigs, cats and humans. Then, cryopreservation of a monocyte cell line of a powerful animal is targeted.
- the monocyte cell line used in the present invention a cell obtained by passage of monocyte cells collected from peripheral blood of various healthy animals is used.
- a cell obtained by passage of monocyte cells collected from peripheral blood of various healthy animals is used.
- heparin was added to the blood immediately after collection, diluted with cooled phosphate buffered saline, and then diluted with prescribed saline.
- a monocyte cell line obtained by passage of monocyte cells obtained according to the protocol of the present invention can be used in the present invention.
- the cryopreservation method according to the present invention will be specifically described.
- the monocyte cell line obtained as described above is dispersed in a medium containing a monosaccharide and serum, and then frozen. Then, it is frozen and stored under liquid nitrogen for a desired period.
- serum used in the cryopreservation method according to the present invention it is preferable to use fetal serum from the viewpoint of availability.
- the monosaccharides used in the cryopreservation method according to the present invention include glucose and fructo. And galactose.
- glucose is an example of a monosaccharide suitable for the culture medium of a monocyte cell line.
- the amount of the monosaccharide added to the medium used in the cryopreservation method according to the present invention must be at least 5% by weight or more based on the total weight of the medium. If the amount of saccharide added is less than 5% by weight, the viability after thawing after cryopreservation is low, which is not preferable.
- an inorganic component examples include phosphorus, nitrogen, potassium, calcium, magnesium, zinc, iron, manganese, zinc, boron, copper, molybdenum, chlorine, sodium, iodine, and cobalt.
- these components include, for example, potassium nitrate, sodium nitrate, calcium nitrate, potassium chloride, potassium monohydrogen phosphate, potassium dihydrogen phosphate, calcium chloride, magnesium sulfate, sodium sulfate, ferrous sulfate, ferrous sulfate, and the like.
- It can be added as a compound such as diiron, manganese sulfate, zinc sulfate, boric acid, copper sulfate, sodium molybdate, molybdenum trioxide, potassium iodide, cobalt cobalt salt, and the like.
- vitamins for example, piotin, thiamine (vitamin B1), pyridoxine (vitamin B6), pantothenic acid, inositol, nicotinic acid and the like can be added.
- amino acids for example, glycine, phenylalanine, leucine, glutamine, cysteine and the like can be added.
- each of the above-mentioned components can be used at a concentration of about 0.1 ⁇ to 100 ⁇ of inorganic components, and vitamins and amino acids at a concentration of about 0.1 to about 100 mg / 1, respectively. .
- the culture medium used in the cryopreservation method according to the present invention is added with a cryoprotectant in advance, and after adding cells to be cryopreserved, the mixture is frozen.
- a cryoprotectant examples include dimethyl sulfoxide, ethylene glycol, glycerin, glucose and the like.
- the freezing method used in the present invention includes: 1) a method in which monocyte cells are treated with a relatively high concentration of a cryoprotectant and then rapidly cooled with liquid nitrogen; 2) the cells are treated with a cryoprotectant. After the treatment, a method of freezing to 40 ° C to 80 ° C using a program freezer or the like as necessary, followed by rapid cooling with liquid nitrogen (preliminary freezing method) may be mentioned.
- the freezing method may be appropriately selected depending on the type of the cell.
- the cells cryopreserved according to the present invention can be used for reculturing after thawing and water supply.
- liquid Monocyte cells stored in nitrogen for example, can be rapidly thawed in warm water at 35-37 ° C, and then, after removal of the cryoprotectant, preferably contain 1.0-1.2M sugar. Add medium to absorb water. Thereafter, the cells are recultured using a medium used for cell culture, which is well known in the art.
- the survival rate of the thawed monocyte cells after cryopreservation can be confirmed by a staining method.
- an example of an animal monocyte cell line will be described.
- a monocyte cell line from which blood of dogs, pigs, cats and humans was collected was used for the freeze-preservation method of the present invention.
- PBS cold Dulbecco's phosphate buffered saline
- the leukocyte fraction obtained in this manner is suspended in a basic cell culture medium (hereinafter referred to as “CGM”) described below so that the number of cells per ml becomes about one million, and 10 ml of each is suspended in a glass.
- CGM basic cell culture medium
- the mixture was distributed into flasks (culture area: 4 cm x 8 cm), and cultured statically at 36.5 ° C.
- the basic cell culture medium used was a slightly modified Dulbecco's modified Eagle medium.
- the basic cell culture medium contains, per 1000 ml, lg glucose, 2 g galactose, lg fructose, 0.3 g N-acetyl-D (+)-darcosamine, 0.2 g HEPES, and 0.22 g Sodium pyruvate was further added.
- Heat-inactivated fetal calf serum (hereinafter referred to as “FBS”) was contained in CGM at 10-20%.
- Antibiotics were added according to the usual method. After one day of culture, the primary culture is rinsed with warm CGM to remove non-adherent cells, and then, during culture, at intervals of 3 days 4 days, One part was replaced. In this way, the cells were cultured for 4 weeks.
- the leukocyte fraction mainly containing lymphocytes and monocytes was obtained by centrifugation (800 ⁇ g for 15 minutes).
- the leukocyte fraction thus obtained was suspended in the above-mentioned CGM so that the number of cells per ml became about 1 million, and the cells were cultured at 36.5 ° C for static culture. Dispersed in a flask. To maintain only adherent cells, the primary culture was rinsed with warm CGM during the 20 hour culture. After three weeks of culture, a number of adherent cells were identified.
- SWZK99 conditioned media removed from porcine monocyte cell cultures
- the CGM was replaced twice a day to initiate numerous epithelial cell growths, one of which was designated FL / K02 and subcultured in glass flasks.
- the subcultured cells of the 14th and 14th passages were subjected to the experiments described below.
- Example 4 Heparin was added to about 30 ml of blood immediately after collection of humans, and diluted with cold dilute cation-free cold dabelco's phosphate buffered saline (hereinafter referred to as “PBS”).
- PBS cold dilute cation-free cold dabelco's phosphate buffered saline
- the blood thus obtained was gently layered on the supernatant with an equal volume of a specific gravity solution (1.077 g / ml) and centrifuged (800 xg for 15 minutes). Almost at the center, a band was formed that also had lymphocytes and monocyte power. This band was suspended in CGM, and the centrifugation was repeated.
- the cells were suspended again in GM so that the number of cells per 1 ml becomes about 2 million, and distributed in a glass cell culture flask (culture area: 32 cm 2 ).
- One of the lines with particularly excellent proliferative properties was named "K63" and was subcultured up to the 26th generation. For the cryopreservation experiments described below, cells subcultured with the 12th and 24th passages were used.
- the cells obtained as described above were grown in a glass flask using a nutrient medium containing 10% FBS (hereinafter referred to as “GM”).
- GM a nutrient medium containing 10% FBS
- the cells after the culture were dispersed even in an EDTA-tyrosine mixed solution, washed twice with cold GM, and then resuspended in a cryopreservation medium described later.
- cryopreservation medium used in the experiment of the present invention is shown below.
- Medium 1 The medium according to the present invention, which is composed of 75 volumes of FBS + 25 volumes of 20% (w / v) dalcose.
- Medium 2 As a comparative example, consists of 65 volumes of FBS + 25 to 20 weight 0/0 glucose + 10 volumes of volumes DMSO.
- Medium 3 As a comparative example, consists of glycerin glucose + 10 volumes of 65 20 weight 0/0 of FBS + 25 ml of volume.
- Medium 4 As a comparative example, it is composed of 90 volumes of a nutrient solution containing 10% FBS + 10 volumes of DMSO.
- Various monocyte cells are suspended in a cryotube (a serum tube manufactured by Sumitomo Bakelite Co., Ltd.) containing the above culture medium so that the number of cells per 1.5 ml becomes about 2 to 3.5 million cells. Let Was. Immediately after, the tubes were maintained at 4 ° C for 40 minutes, then at -80 ° C for 40 minutes, and then stored in liquid nitrogen.
- a cryotube a serum tube manufactured by Sumitomo Bakelite Co., Ltd.
- the cells were thawed in a water bath at 38 ° C for 5 minutes, and then the cells were washed once with a sufficient amount of cold GM. In order to examine the cell viability by the trypan blue dye exclusion test, the washed cells were suspended and diluted again with the above GM.
- the cell suspension was diluted with GM, and seeded on a glass petri dish (6 cm in diameter) at a rate of 10 ml per dish or 1.5 ml per slip. These cultures were incubated at a temperature of 36.5 ° C. and a humidity of 99% for 3 days while refluxing 0.1% CO gas. 5% e
- FIG. 1 shows the results of the recovery after thawing of all the monocyte cell lines after cryopreservation performed in the experiment of the present invention.
- the medium 1 according to the present invention contained 97.5% and 95% of each of the monocyte cell lines SW / K99, Cn / K99, FL / K02 and K63, respectively. It was demonstrated that recovery could be achieved with high viability rates of 5%, 98.5% and 92.5%.
- the recovery rate of each monocyte cell line by thawing after cryopreservation was considerably lower. Specifically, for SW / K99, 72.5%, 70.5% and 73.6% of the culture medium containing DMSO and glycerin, which are mediums 2, 3, and 4, respectively. The recovery rate proved to be impractical. In contrast, the medium 1 according to the present invention was found to be a practically useful cryopreservation medium for monocyte cell lines.
- FIG. 1 shows the results of the recovery rate after thawing of all monocyte cell lines after cryopreservation performed in the present invention.
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Abstract
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Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003154124A JP2004350615A (ja) | 2003-05-30 | 2003-05-30 | 単球株化細胞の凍結保存方法及び該方法に利用される培地 |
| JP2003-154124 | 2003-05-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004106501A1 true WO2004106501A1 (ja) | 2004-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2004/007497 Ceased WO2004106501A1 (ja) | 2003-05-30 | 2004-05-31 | 単球株化細胞の凍結保存方法及び該方法に利用される培地 |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2004350615A (ja) |
| WO (1) | WO2004106501A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12426594B2 (en) | 2020-09-24 | 2025-09-30 | Everest Medical Innovation GmbH | Cryoprotective compositions and methods for protection of a surgical site during cryosurgery |
| US12453805B2 (en) | 2020-09-24 | 2025-10-28 | Everest Medical Innovation GmbH | Cryoprotective compositions, surgical kits, and methods for protection of a surgical site during cryosurgery |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK3035798T3 (en) * | 2013-08-20 | 2018-11-19 | Univ Yeditepe | CELL CRYO-CONSERVATION MEDIUM ADDED TO DRILL |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001087062A2 (en) * | 2000-05-16 | 2001-11-22 | The General Hospital Corporation | Microinjection of cryoprotectants for preservation of cells |
-
2003
- 2003-05-30 JP JP2003154124A patent/JP2004350615A/ja active Pending
-
2004
- 2004-05-31 WO PCT/JP2004/007497 patent/WO2004106501A1/ja not_active Ceased
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001087062A2 (en) * | 2000-05-16 | 2001-11-22 | The General Hospital Corporation | Microinjection of cryoprotectants for preservation of cells |
Non-Patent Citations (2)
| Title |
|---|
| FEUERSTEIN B. ET AL: "A method for the production of cryopreserved aliquots of antigen-preloaded, mature dentritic cells ready for clinical use", JOURNAL OF IMMUNOLOGY METHODS, vol. 245, no. 1/2, 2000, pages 15 - 29, XP004218805 * |
| THUMANN P. ET AL: "Antigen loading of dendritic cells with whole tumor cell preparations", JOURNAL OF IMMUNOLOGY METHODS, vol. 277, no. 1/2, 2003, pages 1 - 16, XP004430542 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12426594B2 (en) | 2020-09-24 | 2025-09-30 | Everest Medical Innovation GmbH | Cryoprotective compositions and methods for protection of a surgical site during cryosurgery |
| US12453805B2 (en) | 2020-09-24 | 2025-10-28 | Everest Medical Innovation GmbH | Cryoprotective compositions, surgical kits, and methods for protection of a surgical site during cryosurgery |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004350615A (ja) | 2004-12-16 |
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