WO1998001537A1 - Compositions cellulaires - Google Patents
Compositions cellulaires Download PDFInfo
- Publication number
- WO1998001537A1 WO1998001537A1 PCT/JP1997/002254 JP9702254W WO9801537A1 WO 1998001537 A1 WO1998001537 A1 WO 1998001537A1 JP 9702254 W JP9702254 W JP 9702254W WO 9801537 A1 WO9801537 A1 WO 9801537A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cells
- fucoidan
- apoptosis
- cell
- hematopoietic stem
- Prior art date
Links
Classifications
-
- 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
- C12N5/0081—Purging biological preparations of unwanted cells
- C12N5/0093—Purging against cancer cells
-
- 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
- C12N5/0647—Haematopoietic stem cells; Uncommitted or multipotent progenitors
-
- 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
- C12N2501/00—Active agents used in cell culture processes, e.g. differentation
- C12N2501/10—Growth factors
- C12N2501/125—Stem cell factor [SCF], c-kit ligand [KL]
-
- 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
- C12N2501/00—Active agents used in cell culture processes, e.g. differentation
- C12N2501/20—Cytokines; Chemokines
- C12N2501/23—Interleukins [IL]
-
- 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
- C12N2501/00—Active agents used in cell culture processes, e.g. differentation
- C12N2501/90—Polysaccharides
Definitions
- the present invention relates to a cell composition, and more particularly, to a composition of purified hematopoietic stem cells.
- a composition containing appropriate cells or a composition containing cells with appropriate modifications is extremely important in the medical field.
- cancer cells are mixed in these target cell compositions, a sufficient therapeutic effect cannot be obtained.
- introduction of a multidrug resistance gene as described above is When performed on existing cell compositions, the cancer cells themselves also acquire multidrug resistance, which is counterproductive to the intended cancer treatment.
- An object of the present invention is to provide a target cell composition from which cancer cells have been substantially removed, which is suitable for gene therapy, and a method for obtaining the same.
- the present inventors can specifically remove only cancer cells mixed in the hematopoietic stem cell composition, The present inventors have found that by introducing a foreign gene of interest into hematopoietic stem cells after treatment with an inducing agent, it is possible to perform gene therapy with established safety, and have completed the present invention.
- the first aspect of the present invention relates to a cell composition containing hematopoietic stem cells, from which cancer cells have been substantially removed, and more particularly, to a method for producing cancer cells using a cancer cell-specific apoptosis-inducing agent.
- It is a cell composition containing hematopoietic stem cells substantially removed, and a representative example is a buffer solution containing the hematopoietic stem cells.
- the content of hematopoietic stem cells is not particularly limited, and is determined according to the intended use of the composition.
- the buffer may contain other hematopoietic cells, stromal cells, etc., and may contain a hematopoietic stem cell culture substrate, hematopoietic stem cell growth factor, stem cell differentiation factor, hematopoietic stem cell protective agent, etc. .
- a second aspect of the present invention is a method for obtaining a cell composition containing hematopoietic stem cells from which cancer cells have been substantially removed, using a cancer cell-specific apoptosis inducing agent.
- a method for selectively removing cancer cells from a cell composition is a method for selectively removing cancer cells from a cell composition.
- a third aspect of the present invention is a cell composition containing hematopoietic stem cells, from which cancer cells have been substantially removed, wherein the hematopoietic stem cells have a foreign gene introduced therein.
- a cell composition comprising a hematopoietic stem cell into which a foreign gene has been introduced, wherein the cancer cell has been substantially removed using an apoptosis-inducing agent specific to the cancer cell.
- Apoptosis is a form of cell death different from necrosis.Morphologically, it occurs through nucleus condensation, cell shrinkage, vacuolation, cell surface smoothing, cell fragmentation, etc. This is a typical style of death (Nikkei Biotech, Nikkei Bio Latest Term Dictionary, 4th edition, pp. 21-22).
- a target cell into which a foreign gene has been introduced can be safely transferred to a host without the risk of introducing the gene into cancer cells using an apoptosis-inducing agent.
- the apoptosis-inducing agent used in the present invention is not particularly limited as long as it has a cancer cell-specific apoptosis-inducing action.
- the selection can be made by using normal cells and cancer cells.
- Sex can be specified.
- the apoptosis inducing agent may be formulated in a known manner by itself or in combination with a known pharmaceutical carrier.
- the pharmaceutical carrier can be appropriately selected according to the dosage form.
- lactose, sucrose, mannite, starch, carboxymethylcellulose, and inorganic salt sugar can be used.
- the apoptosis-inducing agent can be brought into contact with the cells.
- sulfated polysaccharide used in the present invention examples include fucoidan, dextran sulfate and the like.
- Fucoidan is a polysaccharide containing fucose sulfate in the molecule, and is not particularly limited. For example, it is contained in brown algae plants, sea cucumber, etc. (edited by Tokio Soda and edited by Fujio Egami, Kyoritsu Shuppan Co., Ltd., Showa Published on Feb. 15, 2013, Polysaccharide Chemistry, p. 319, p. 321).
- the sulfated-fucose-containing polysaccharides derived from brown alga plants are commonly called fucoidan, fucoidin, and fucan, and it is known that there are several molecular species.In the present specification, fucoidan is meant to include these. I do.
- a decomposition product of fucoidan can be used in the present invention.
- a fucoidan-containing extract obtained from a fucoidan-containing substance, and a purified product from the extract can be used.
- the preparation method of the fucoidan-containing extract and the purification method from the extract may be performed by a known method, and are not particularly limited.
- Fucoidan degradation products are those obtained by decomposing fucoidan by enzymatic, chemical, or physical methods, and can be obtained by using known enzymatic, chemical, or physical methods. Can be used.
- brown alga plants containing fucoidan include the brown alga plants described in Yukio Yamada, Muneyoshi Segawa, Hoikusha, Primary Sea of Japan Seaweed Illustration Book published in 1975, pp. 22-52,
- fucoidan can be prepared using hibamata (Fucus evanescens), gagome kelp (Kjellmaniella crassifolia) ⁇ kelp (Laniinaria japonica; wakame (Undaria pinnatifida), etc.).
- Sea cucumber containing fucoidan includes, for example, sea cucumber described in Japanese Patent Application Laid-Open No. HEI 4-91027. Fucoidan can be prepared by the method described.
- the fucoidan-containing powder can be prepared by subjecting the brown alga plant, sea cucumber and the like containing fucoidan to drying and pulverizing.
- a fucoidan-containing extract can be prepared by performing hot water extraction and dilute acid extraction from the fucoidan-containing powder.
- Fucoidan As a method for decomposing fucoidan, known methods can be used as a method for decomposing fucoidan, such as a method using a fucoidan-degrading enzyme, a method for performing acid decomposition, and a method for performing ultrasonic treatment. You can do it at Fucoidan has a sulfate group in the molecule, which reacts with various bases. Forms salt. Fucoidan, a decomposition product thereof, is stable in a salted state, and is usually isolated in the form of a salt such as sodium and potassium. By treating a salt of these substances with a cation exchange resin such as Dowex 50 W, it is possible to introduce fucoidan having a free sulfate group and its decomposed product.
- a cation exchange resin such as Dowex 50 W
- salts of fucoidan and their decomposition products for example, alkali metal salts such as potassium and sodium, alkaline earth metal salts such as calcium, magnesium, and potassium, and pyridinium. And the like, and salts with organic bases, such as ammonium salts.
- fucoidan there is a group containing fucose as a main component, and a group containing a few percent of peronic acid and a large amount of fucose-mannose in a constituent sugar.
- fucoidan-F the one that does not substantially contain peronic acid
- fucoidan-U the fucoidan containing peronic acid
- fucoidan-U a mixture of both is simply referred to as fucoidan.
- fucoidan F and fucoidan-U may be used alone or in combination.
- the apoptosis-inducing agent used in the present invention contains, for example, fucoidan-1 U having the following physicochemical properties prepared as described in Example 1.
- Constituent sugar mainly composed of fucose, mannose and galactose and contains peronic acid.
- the apoptosis-inducing agent used in the present invention is described in, for example, Example 2. It contains Fucoidan-F having the following physicochemical properties prepared as described above.
- Constituent sugar mainly composed of fucose, and contains substantially no peronic acid.
- fucoidan-degrading microorganism for example, the above-mentioned fucoidan-degrading enzyme-producing flavopacterium sp. SA-00082, a microbial degradation product of fucoidan can be prepared.
- fucoidan-U by treating the above fucoidan-U with a fucoidan-degrading enzyme, for example, a fucoidan-degrading enzyme produced by Flavobacterium sp. SA-0882, an enzyme-decomposed product of fucoidan-U can be prepared.
- a molecular weight fraction of each degradation product can be prepared from these degradation products.
- fucoidan is generally weak against acids and alkalis, when an acidic solution or an alkaline solution is used, the molecular weight can be easily reduced.
- Arbitrary decomposition products can be prepared by adjusting the heating temperature, time, pH, etc.For example, the average molecular weight and molecular weight distribution of the decomposition products by gel filtration, molecular weight fractionation membrane treatment, etc. Etc. can be adjusted.
- the molecular weight and sugar composition harvest material of Fukoidan of Fukoidan, drying method of the raw material unlike the saving method of raw material, also, the heating conditions at the time of extraction of Fukoidan varies by P H conditions.
- fucoidan is hydrolyzed by an acid, and under alkaline conditions, the molecular weight is reduced by 5-elimination of peronic acid. Therefore, even in the case of fucoidan-U and fucoidan-F described in this specification, the molecular weight and molecular weight distribution are only one example, and the molecular weight and molecular weight distribution can be easily changed depending on the processing conditions of fucoidan. Can change. For example, slightly alkaline 1 By heating at 0 ° C for 1 hour and using desalting with a molecular sieve membrane with a pore size of 300, fucoidan, fucoidan-1U, fucoidan-F, etc. with a molecular weight distribution of about 100 to 10,000 can be prepared. . Depending on the conditions used, fucoidan having any molecular weight and molecular weight distribution can be prepared, and in the present invention, an apoptosis-inducing agent containing these fucoidans can be used.
- fucoidan or its decomposed product is added to the culture of cancer cells at a concentration of 1 g / m1 or more, cancer cells undergo apoptosis within a few days after the addition, and fucoidan or its decomposed product induces strong apoptosis. It is confirmed that it has an effect. These substances do not induce apoptosis in normal cells and do not show toxicity.
- edible brown algae plants, fucoidan derived from sea cucumber, and its degradation products are naturally derived substances, are highly safe, and have no toxicity when administered orally to mice.
- fucoidan When fucoidan is used as an apoptosis-inducing agent, fucoidan and / or a degradation product thereof may be formulated in combination with a known pharmaceutical carrier and contacted with desired cells.
- Dextran sulphate is produced by microorganisms such as dextran sulphate-ester, a polymer of ⁇ -1,6-linked D-glucoviranose produced by Leuconostoc mesenteroides.
- dextran sulphate-ester a polymer of ⁇ -1,6-linked D-glucoviranose produced by Leuconostoc mesenteroides.
- commercially available dextran sulfate can be used.
- the saccharide compound containing peronic acid and / or a peronic acid derivative used in the present invention is a saccharide compound selected from polysaccharides, oligosaccharides, and monosaccharides containing peronic acid and / or a peronic acid derivative in the molecule. There is no particular limitation as long as it has apoptosis-inducing properties.
- Polysaccharides containing peronic acid and / or a peronic acid derivative in the molecule include, for example, vectin, pectic acid, alginic acid, hyaluronic acid, etc.
- Oligosaccharides containing peronic acid and Z or a peronic acid derivative in the molecule include oligosaccharides derived from the above polysaccharides, and can be produced by a known method. Oligosaccharides synthesized by synthetic methods are also included in the present invention.
- peronic acid or a peronic acid derivative examples include galacturonic acid, glucuronic acid, mannuronic acid, lactones thereof, esters thereof, for example, methyl esters, and amides thereof, and can be produced by a known method. it can.
- the sugar compound containing oxalic acid and / or a peronic acid derivative which has an apoptosis-inducing property and is used in the present invention, is produced from a sugar compound containing peronic acid and a Z or peronic acid derivative as a raw material.
- a sugar compound containing peronic acid and a Z or peronic acid derivative as a raw material.
- a polysaccharide containing peronic acid and / or a peronic acid derivative as a component for example, pectin or pectic acid can be used as a raw material.
- the method for producing the saccharide compound is not limited, and examples thereof include a method for producing the saccharide compound by chemical, enzymatic, and physical methods alone or in combination.
- a chemical treatment method in the production of the sugar compound used in the present invention for example, room temperature to 20 (several seconds to several hours at TC, preferably 50 to 130 ° C.
- the treatment can be carried out for a few seconds to 60 minutes.
- a treatment at pH 6.8 and 95 ° C for several minutes to several tens of minutes generates a ⁇ -elimination reaction, and the absorbance at around 235 nm increases.
- a saccharide compound having a large amount of unsaturated lipoic acid and / or an unsaturated lipoic acid derivative is obtained.
- the saccharide compound of the present invention is a saccharide compound containing unsaturated poric acid and a Z or peronic acid derivative at the non-reducing end formed by the yS-elimination reaction of a polysaccharide containing peronic acid and / or a peronic acid derivative. included.
- Examples of the enzymatic treatment method in the production of the saccharide compound used in the present invention include known degradation of peronic acid and / or a peronic acid derivative-containing polysaccharide by a peronic acid and / or a peronic acid derivative-containing polysaccharide hydrolase. .
- known degradation of peronic acid and / or a peronic acid derivative-containing polysaccharide by a peronic acid and / or a peronic acid derivative-containing polysaccharide lyase may be mentioned.
- pectin and pectic acid respectively, known pectin lyase (EC 4.2.2.10), pectate lyase (EC 4.2.2.2), and exopolygalacturon Degradation by acid lyase (EC 4.2.2.9) gives the sugar compound used in the present invention having 4-deoxy-L-streuxhexa-4-enopyranosyl ⁇ peronate or its methyl ester at the non-reducing end. can get.
- hyaluronic acid hyaluronate lyase (EC 4.2.2.1) is used
- alginate lyase EC 4.2.2.3
- Examples of the physical treatment method in the production of the sugar compound used in the present invention include near-infrared rays, infrared rays, microwaves, ultrasonic treatments, and the like. Or sonication at a temperature of at least room temperature and under appropriate reduction, for example, in the presence of ascorbic acid, for at least 1 second, preferably for 5 seconds to 1 hour. Then vibrate Giving energy. Irradiation of microwaves, near-infrared rays, infrared rays, and the like is effective other than ultrasonic waves, and a combination of these may be applied. Irradiation may be performed continuously or intermittently.
- the degradation product of a sugar compound containing a peronic acid and / or a humic acid derivative, which has an apoptosis-inducing property used in the present invention contains humic acid and Z or a humic acid derivative It can be produced using a sugar compound as a raw material.
- the method for producing the decomposed product is not limited, and examples thereof include a chemical, enzymatic, and physical production method from the raw material alone or in combination.
- Examples of the decomposed product used in the present invention include a heat-treated product of a sugar compound containing peronic acid and a derivative of peronic acid.
- a sugar compound may be used at 60 to 350 ° C. for several seconds to several days, preferably at 80 to 150 ° C.
- a heat-treated product having apoptosis-inducing property can be obtained.
- the pectin used as the sugar compound is not particularly limited, and for example, a high-molecular-weight polysaccharide extracted from citrus peel and apple fruit can be used.
- the raw material for industrial pectin production is fruit, which uses juice from citrus fruits such as lemon and lime (mainly endocarp), as well as apple juice.
- Squeezed Kashiwa contains mainly insoluble protein, which is solubilized (extracted) at the manufacturing stage to prepare pectin. Solubilization can be performed by extracting with hot or hot acidic water.By controlling the temperature, pH, and time conditions during extraction according to the raw materials, it is possible to increase the pectin with a constant molecular weight and esterification degree. It can be produced in yield.
- the extract is purified by centrifugation or filtration. It can be added to precipitate and recover the pectin. After drying and pulverizing the precipitate, a predetermined dried vectin can be prepared.
- pectin is a partially methylated polymer of galacturonic acid. Carboxyl groups are methylesterified, free of acid, or ammonium chloride, potassium chloride, or sodium chloride. Pectin is classified into HM pectin with high DM degree and LM pectin with low DM degree according to the degree of methyl esterification (DM degree: ratio of methoxyl group to total carboxyl groups) [Satoshi Yoshizumi et al. Published by Korin Co., Ltd., Material Handbook for New Food Development, pp.
- degradation products of pectin and pectic acid can also be used.
- a chemical decomposition method such as acid treatment or an alkaline treatment
- a physical decomposition method such as ultrasonic treatment, heat treatment, pressure treatment, pressure heat treatment, or enzymatic
- a decomposition method may be used.
- the saccharide compound containing peronic acid and Z or a peronic acid derivative and / or a decomposition product thereof used in the present invention include a pharmaceutically acceptable salt thereof.
- a sugar compound containing peruronic acid and / or a peronic acid derivative and Z or a degradation product thereof may be formulated in combination with a known pharmaceutical carrier.
- a sugar compound containing peronic acid and / or a peronic acid derivative and / or a decomposition product thereof is added to the culture solution of cancer cells, the cancer can be expressed within a few days after the addition. Cells undergo apoptosis. It is not toxic to normal cells.
- the sugar compound containing peronic acid and / or peronic acid derivative and Z or its degradation product of the present invention are naturally occurring substances, and show no toxicity even when administered orally or parenterally to mice.
- cyclopentenone represented by the formula (1) having an apoptosis-inducing activity used in the present invention (hereinafter simply referred to as cyclopentenone) is prepared by a chemical synthesis method [Carbohydrate Research]. (Carb ohy drate Res.), Vol. 247, pp. 217-222 (1993), Helvetica Chimica Acta, Vol. 55, pp. 2838-2844 (1972)], and its trans form and cis form can also be used in the present invention.
- Heat treatment of an aqueous solution of D-glucuronic acid with 121 for 4 hours generates cyclopentenone in the heat-treated product.
- the cyclopentenone in the heated product is extracted with a solvent, and the extract is concentrated.
- the concentrate is then separated by silica gel column chromatography, the eluted pentenone fraction eluted is concentrated, cyclopentenone is extracted from the concentrate with chloroform, and normal phase column chromatography of the extract concentrate is performed. By doing so, purified cyclopentenone can be obtained.
- the physical properties of cyclopentenone are shown below.
- the mass spectrometry of cyclopentenone was performed using a DX 302 mass spectrometer (manufactured by JEOL Ltd.).
- the NMR spectrum was measured using a heavy chloroform solvent using a JNM-A500 (produced by Honden Electronics Co., Ltd.).
- Specific rotation is DIP-370 type polarimeter (manufactured by JASCO Corporation)
- UV absorption spectrum is UV-2500 spectrophotometer (manufactured by Shimadzu Corporation)
- the infrared absorption spectrum (IR) was measured using an FT IR-8000 infrared spectrophotometer (manufactured by Shimadzu Corporation).
- cyclopentenone may be formulated in combination with a known pharmaceutical carrier.
- cancer cells When cyclopentenone is added to a culture of cancer cells, cancer cells undergo apoptosis within a few days after the addition. It is not toxic to normal cells.
- the cyclopentenone used in the present invention is not toxic to mice.
- Hematopoietic stem cells are cells that have the ability to produce mature blood cells such as erythrocytes, granulocytes, platelets, and lymphocytes from a single cell (multipotency) and have the ability to self-renew.
- Hematopoietic stem cells remove bone marrow from diseased hosts prior to treatment, such as (1) regenerating the hematopoietic system of the host lacking hematopoietic stem cells, or (2) administering a drug or irradiating. It has applications in the treatment of retransplanting the hematopoietic stem cells prepared as described above to the host after the treatment, (3) production of various hematopoietic cells, (4) treatment of diseases by introducing genes into autologous hematopoietic stem cells, and the like.
- bone marrow cells can be obtained from a bone marrow source, for example, the iliac crest, tibia, femur, spine, or other bone cavity.
- Other sources of hematopoietic stem cells include embryonic yolk sac, fetal liver, fetal and adult spleen, and blood including adult peripheral blood and umbilical cord blood.
- any known method can be used.
- the simplest and most efficient method for preparing a hematopoietic stem cell composition is disclosed in This is a method for preparing hematopoietic stem cells described in Japanese Patent Publication No. 3150, and a substantially homogeneous composition of human hematopoietic stem cells can be prepared by the method described in the publication.
- a fraction containing desired cells is obtained by magnetic separation using antibody-coated magnetic beads, affinity chromatography, use of a monoclonal antibody, and the like, which is further separated by a fluorescence-activated cell sorter.
- the desired cells are obtained and suspended in a buffer medium.
- composition containing the isolated hematopoietic stem cells can be used according to the purpose. If the composition contains cancer cells, various problems may occur depending on the method of use. Can occur.
- the apoptosis-inducing agent used in the present invention can be used at a concentration that induces apoptosis in cancer cells and eliminates only the cancer cells.
- the hematopoietic inducer may be added to the hematopoietic stem cell culture solution, or may be added at any step during the preparation of the hematopoietic stem cell composition. Efficient at all.
- the cell composition of the present invention is a composition containing the hematopoietic stem cells thus obtained and can be produced by a method known per se.
- the content of the hematopoietic stem cells is not particularly limited, and the purpose of use of the composition Is determined by It may also contain other hematopoietic cells, stromal cells, etc., and may contain a hematopoietic stem cell culture substrate, hematopoietic stem cell growth factor, proliferating stem cell differentiation factor, hematopoietic stem cell protective agent, and the like.
- hematopoietic stem cell composition from which cancer cells have been removed at present, but it is difficult to prepare peripheral blood of multiple myeloma patients [Blood, Vol. 86, Vol. From pages 1 to 389 (1995)], it is possible to prepare a hematopoietic stem cell composition from which cancer cells are not detected, that is, cancer cells are substantially removed.
- the prepared hematopoietic stem cells can be expanded by a known method, for example, the method described in the above-mentioned Japanese Patent Application Laid-Open No. 7-313150. For example, they can be co-cultured with Stroma cells or grown in a medium containing a maintenance factor.
- Hematopoietic stem cells can be target cells for gene transfer.
- the method for introducing a gene into a target cell can be performed according to a known method. Examples of a method for introducing a gene into a target cell such as a hematopoietic stem cell include the method disclosed in W095 / 262, published internationally in 1995. The method described in Japanese Patent Publication No. 00 is the most efficient method.
- a gene to be introduced into a target cell that is, a foreign gene
- a foreign gene can be any gene that is desired to be introduced into a cell.
- a foreign gene is adenosine deaminase that is associated with a disease.
- ADA antisense nucleic acids or ribozymes or false primers
- intracellular antibodies eg, 1994
- WO 94/02610 published on Feb. 3
- Such foreign genes can be introduced under the control of a promoter appropriate for controlling the expression of these genes, typically a foreign promoter. If necessary, an expression control factor other than the promoter, for example, a tannin-one-one-sequence sequence may be added.
- Gene transfer into hematopoietic stem cells can be performed, for example, using a retroviral vector.
- the vector can contain a marker gene such as an antibiotic resistance gene so that the cells into which the gene has been introduced can be easily selected.
- Representative vectors that can be used in the present invention include, for example, NZZZipTKNEO (TKNEO) vector (titer: 1 xl O 5 G 418 r cfu ml in NIH 3T3 cells), ZipPGK—hADA vector and ZipPGK—mAD A vector, etc., all of which are described by Moritz et al. [J. Exp. Med., Vol. 178, p. 529 (1993)]. It has been reported.
- TKNEO NZZZipTKNEO
- the TKNEO vector carries the neomycin phosphotransferase gene expressed by the simple herpesvirus thymidine kinase promoter. Cells into which a gene has been introduced using this vector can be selected using the neomycin resistance conferred by the gene.
- the human ADA (“hADA") cDNA is human. It is expressed by the human phosphoglycerate kinase (PGK) promoter. This vector contains only the gene that can be expressed and does not have a marker gene that can be used for selection.
- the ZipPGK-mADA (PGK-mADA) vector is identical to the ZipPGK-hADA vector, except that the human ADA cDNA has been replaced with the mouse ADA ("mADA") cDNA.
- mADA mouse ADA
- composition of hematopoietic stem cells into which the gene has been introduced as described above can be used for treating genetic diseases.
- Genetic diseases associated with hematopoietic cells are caused by transplantation of a self- or allogeneic hematopoietic stem cell composition into a patient, which is deficient in the gene responsible for the disease or has a gene capable of complementing the abnormality. Can be treated.
- genes responsible for diseases such as yS-thalassemia (S-thalaseraia; Mediterranean anemia), sickle cell anemia, ADA deficiency, recombinase deficiency, and recombinase-regulated gene deficiency have been identified.
- a normal wild-type gene can be introduced into a patient by homologous or random recombination and then transplanted into a patient for treatment.
- allogeneic hematopoietic stem cell transplantation normal hematopoietic stem cells with no abnormal genes are used for the treatment.
- Another indication for gene therapy is to confer drug resistance on normal hematopoietic stem cells by introducing drug resistance genes, allowing treatment with high concentrations of drugs that are usually considered dangerous.
- the hematopoietic stem cell composition obtained by the present invention from which cancer cells have been substantially removed, has a drug resistance gene against an anticancer agent, for example, By introducing a multidrug resistance gene, treatment using a high concentration of the anticancer agent is possible.
- hematopoietic stem cells if the disease is related to the deficiency of specific secreted proteins such as hormones, enzymes, cytokines and growth factors.
- specific secreted proteins such as hormones, enzymes, cytokines and growth factors.
- the expression of specific gene products in cells can be controlled by inserting genes encoding ribozymes, antisense nucleic acids, and other appropriate genes. It is also possible to reduce the susceptibility to illness or illness, especially illness of the blood system.
- hematopoietic stem cells are genetically modified to prevent the growth of the pathogen in hematopoietic stem cells or cells differentiated from hematopoietic stem cells.
- Antisense nucleic acids or ribozymes can be expressed.
- specific molecules of cell surface receptors can be removed from cells belonging to T cells. That is, the expression of a specific receptor can be suppressed by modifying the receptor gene by homologous recombination or using an antisense nucleic acid or ribozyme that prevents the expression of the receptor gene.
- the obtained transgenic hematopoietic stem cell composition can be conventionally introduced into a vertebrate as a recipient in cell transplantation, for example, by intravenous administration.
- the recipient is preferably Donna himself ⁇ Allogeneic transplant And the latter, especially when umbilical cord blood cells are used for transplantation.
- cancer cells in the target cell composition for gene transfer can be selectively removed.
- Target cells for gene transfer include, but are not limited to, for example, stem cells, hematopoietic cells, primordial germ cells, oocytes, oocyte, ova, spermatocytes, Cells selected from sperm, CD34 + cells, C-kit + cells, lymphocytes, B cells, T cells, myeloid cells, and the like. Cell compositions containing these cells can be prepared by known methods.
- a transformed vertebrate can be easily prepared. if an embryonic stem cell, a primal germ cell, an oocyte, an oocyte, an egg, a spermatocyte, a sperm, or the like is used as a target cell, a transformed vertebrate can be easily prepared. .
- % means% by weight.
- the filtrate is removed by an ultrafilter equipped with an ultrafiltration membrane with a molecular weight of 100,000. Concentrate to 2 liters, then add sodium chloride to a final concentration of 1.5 M and add 5% cetylpyridinium chloride until no more precipitate forms. . The resulting precipitate was removed by centrifugation. The obtained supernatant was concentrated to 1 liter by ultrafiltration, 4 liters of ethanol was added, and the resulting precipitate was collected by centrifugation. 100 ml of 4 M sodium chloride was added to the precipitate, and after stirring well, ethanol was added to a concentration of 80%. After stirring, a precipitate was obtained by centrifugation.
- the solution is ultrafiltered with an ultrafiltration device equipped with a hollow fiber with a molecular weight of 100,000 or less
- the insoluble substance was removed by centrifugation and filtration, followed by freeze-drying to prepare Fucoidan-1U.
- the weight of 1 U of freeze-dried fucoidan was 15.
- the molecular weight of the obtained fucoidan-1U was determined by gel filtration using Sephacryl S-500, and showed a molecular weight distribution centered at about 190,000.
- FIG. 1 shows the precipitate forming properties of the above fucoidan U and fucoidan F prepared in Example 2 in the presence of an excessive amount of cetylpyridinium chloride at each sodium chloride concentration.
- the vertical axis in Fig. 1 shows the precipitate formation rate (%), and the horizontal axis shows the sodium chloride concentration (M).
- the solid line and open circle show the precipitate formation rate of each fucoidan U of the present invention at each sodium chloride concentration, and in the figure, the dotted line and open triangle show fucoidan U.
- the precipitate formation rate at each sodium chloride concentration (M) of F is shown.
- the precipitation rate was measured at a solution temperature of 37 ° C as follows.
- Fucoidan-U and Fucoidan-F were dissolved in water and 4 M sodium chloride at a concentration of 2%, respectively, and mixed in various proportions to dissolve Fucoidan-U in sodium chloride at various concentrations. And 125 ⁇ l each of fucoidan F solution.
- cetylpyridinium chloride was dissolved at a concentration of 2.5% in water and 4% sodium chloride, and then mixed with sodium chloride at various concentrations to obtain a mixture of 1.25% cetylpyridinium chloride.
- a pum solution was prepared.
- the obtained dried preparation of fucoidan-1U was dissolved in 1N hydrochloric acid at a concentration of 0.5%, treated at 110 ° C for 2 hours, and hydrolyzed to the constituent monosaccharide.
- GlycoTag TM GlycoTAG TM
- GlycoTag Regent Kit GlycoT AG TM Reagent Kit
- PA pyridyl (2) -amination
- Fucoidan-1U the constituent sugars of Fucoidan-1U were fucose, mannose, galactose, glucose, rhamnose, xylose, and peronic acid.
- fucose mannose: galactose: peronic acid: sulfate groups were about 10: 7: 4: 5: 20 in molar ratio.
- This endo-type fucoidan-degrading enzyme is prepared by the following method.
- the strain used for producing the end-type fucoidan-degrading enzyme may be any strain as long as it has the ability to produce the end-type fucoidan-degrading enzyme. Specific examples include, for example, Flavobacteriuni (Flavobacteriuni) sp. 0082 strain (FERM BP-5402).
- This strain is a new strain obtained from seawater in Aomori Prefecture. This strain is designated as Flavobacteriuni sp. SA—0082, and was registered under the Budapest Treaty on March 29, 1995 (Hara Deposit Date). It is deposited under the accession number FERM BP-5402 at the Institute of Biotechnology, Industrial Technology Institute, 1-3-1, Tsukuba East, Ibaraki Prefecture, Japan.
- the nutrient source added to the culture medium of this strain may be any one that uses the strain used and produces end-type fucoidan-degrading enzyme.
- carbon sources include fucoidan, seaweed powder, alginic acid, fucose, glucose, mannitol , Glycerol, saccharose, maltose, lactose, starch, etc. can be used.
- Nitrogen sources include yeast extract, peptone, casamino acid, corn steep liquor, meat extract, defatted soybean, ammonium sulfate, ammonium chloride, etc. Is appropriate.
- inorganic salts such as sodium salts, phosphates, potassium salts, magnesium salts, and zinc salts, and metal salts may be added.
- the production volume varies depending on the culturing conditions.
- the culturing temperature is 15 ° C to 30 ° C
- the pH of the medium is preferably 5 to 9, and 5 to 72.
- the production of this end-type fucoidan-degrading enzyme reaches the maximum in aeration and agitation culture for a long time. It is natural that the culturing conditions are set so as to maximize the production of the end-type fucoidan-degrading enzyme according to the strain used, the composition of the medium, and the like.
- the end-type fucoidan-degrading enzyme is present both in the cells and in the culture supernatant.
- the above-mentioned Flavobacterium sp. SA-0082 strain is cultured in an appropriate medium, the cells are collected, and the cells are disrupted by a commonly used cell disruption means, for example, ultrasonic treatment, to obtain a cell-free extract. can get.
- a purified enzyme preparation can be obtained from the extract by a commonly used purification means. For example, purification by salting-out, ion-exchange column chromatography, hydrophobic binding column chromatography, gel filtration, etc. can be performed to obtain the purified endo-type fucoidan-degrading enzyme containing no other fucoidan-degrading enzymes.
- the present enzyme extracellular enzyme
- the enzyme can be purified by the same purification means as the intracellular enzyme.
- Flavobacterium sp. SA-0082 (F ERM BP-5402) is an artificial seawater containing 0.25% glucose, 1.0% peptone, and 0.05% yeast extract (manufactured by Jamarin Laboratories). A 600-ml medium consisting of 7.5 was dispensed and sterilized (120 ° C, 20 minutes) inoculated into a 2-liter Erlenmeyer flask, and cultured at 24 ° C for 24 hours to obtain a seed culture solution.
- the cells are suspended in 2 OmM acetate monophosphate buffer (pH 7.5) containing 20 OmM sodium chloride, sonicated, and centrifuged to extract the cells. A liquid was obtained.
- 2 OmM acetate monophosphate buffer pH 7.5
- 5 mU of activity was detected in 1 ml of the medium. The activity measurement will be described later.
- the column was adsorbed and the adsorbate was sufficiently washed with the same buffer, and eluted with a linear concentration gradient of 5 OmM to 600 mM sodium chloride, and the active fraction was collected.
- sodium chloride was added to the active fraction to a final concentration of 4 M, and the oil was equilibrated in advance with 2 OmM phosphate buffer (pH 8.0) containing 4 M sodium chloride.
- 2 OmM phosphate buffer pH 8.0
- the active fraction was concentrated with an ultrafilter, and then subjected to gel filtration with Cefacryl S-300 (Pharmacia) preliminarily equilibrated with 1 OmM phosphate buffer containing 5 OmM sodium chloride. Active fractions were collected. The molecular weight of this enzyme was determined to be about 460,000 based on the retention time of Cefacryl S-300.
- the active fraction was dialyzed against 1 OmM phosphate buffer (pH 7) containing 25 mM sodium chloride. This enzyme solution was adsorbed onto a Mono QHR5 / 5 (Pharmacia) column which had been equilibrated with 1 OmM phosphate buffer (pH 7) containing 25 OmM sodium chloride in advance.
- One unit of the enzyme is an amount of the enzyme that cleaves a glycosidic bond between mannose and peronic acid at a rate of 1 / mo 1 per minute in the above reaction system. Quantification of the cleaved bond is performed by calculating the molar extinction coefficient of the unsaturated peruronic acid generated during the elimination reaction as 5.5. The activity of the enzyme is calculated by the formula:
- 5.5 is the molar extinction coefficient (mmM) of the unsaturated peronic acid at 23 Onm
- the fucoidan derived from Gagome kelp as the substrate was prepared as follows.
- the dried gagome kelp is pulverized with a free-type pulverizer M-2 type, treated in 0 volume of 85% methanol at 70 ° C for 2 hours, filtered, and the residue is filtered in a 10 volume of methanol at 70 ° C. Treat for 2 hours and filter.
- a 20-fold amount of water was added to the residue, the mixture was treated at 100 ° C for 3 hours, and an extract was obtained by filtration.
- the precipitate is thoroughly washed with ethanol, and when cetylpyridinium chloride is completely removed, desalting and low-molecular substances are performed using an ultrafilter (excluded molecular weight of the filtration membrane: 100,000) (manufactured by Amicon). The precipitate formed at this time is centrifuged. Removed. The supernatant is freeze-dried to obtain a purified gagome kelp fucoidan.
- the above endo-fucoidan-degrading enzyme is an enzyme that decomposes and decomposes the 1-4 bond between D-mannose and D-gluconic acid present in the complex polysaccharide.
- fucoidan When acting on fucoidan, an oligosaccharide having a structure represented by the following formulas (2), (3) and (4) is produced.
- Fluorescence detector F-1150 manufactured by Hitachi, Ltd. with an excitation wavelength of 320 nm and a fluorescence wavelength of 400 nm
- (C) shows a structure in which D-glucuronic acid and sulfated L-fucose are bonded to D-mannose, which is the reducing terminal residue, and the D-fucose is bonded to the reducing terminal residue. It has a structure in which D-mannose is bonded to —glucuronic acid, and furthermore, the D-mannose is linked to unsaturated D-glucuonic acid and an L-fucose to which a sulfate group is bonded.
- the obtained fucoidan-U has a structure in which D-glucuronic acid and D-mannose are alternately bonded, and a structure in which L-fucose is bonded to at least one or more D-mannose.
- the freeze-dried fucoidan weighed 90 g.
- a fraction with a sodium chloride concentration of 0.05 to 0.8 M was collected, desalted by dialysis, freeze-dried, and substantially separated from fucoidan-U, which was separated from fucoidan-F. 1 g was obtained.
- the molecular weight of the above fucoidan-1F was determined by gel filtration using Cefacryl S-500, and showed a molecular weight distribution centered at about 190,000.
- Fucoidan-1F The components of Fucoidan-1F were analyzed according to the method described in Example 1. The constituent sugars of this fucoidan F were fucose and galactose, and the molar ratio was about 10: 1. Peronic acid and other neutral sugars were not substantially contained. The molar ratio of fucose to sulfate groups was about 1: 2.
- the suspension was adjusted to 1. 5 OmM containing 10 OmM sodium chloride so as to be 5, 10, 20 mg / ml for 1.8 ml of each suspension
- HEPE S buffer (. PH 7 2) was dissolved in, 120 D C, 20 min heat treatment Fukoidan one U of management of the Example 1, Fukoidan described in Example 2. - the F 0. 2m l was added, 37 ° C, in 5% C 0 2 presence and cultured for 92 hours.
- the cultured cells were observed under a microscope to examine the degree of proliferation and cell morphology.
- myeloma cells to which fucoidan-1U or fucoidan-1F had been added exhibited characteristics of apoptosis such as cell shrinkage and nuclear fragmentation.
- the control myeloma cells without the sample increased the cell number about 70-fold, but the myeloma cells to which fucoidan-1U or fucoidan-1F had been added died, and these two types of fucoidan showed a strong apoptosis-inducing effect. .
- FIGS. 2 and 3 show the relationship between the culture time and the number of viable cells.
- the horizontal axis represents the culture time
- the vertical axis represents the number of viable cells in the culture solution.
- Fig. 3 is an enlarged scale of the vertical axis in Fig. 2.
- the X mark is the control without sample (C)
- the open circle is 0.5 mg Zm l of fucoidan-U
- the open triangle is lmgZm of fucoidan U
- the open square is 2 mg / m of fucoidan U.
- solid circles indicate addition of 0.1 mg SmgZm 1 of fucoidan F
- solid triangles indicate addition of ImgZm 1 of fucoidan-F
- solid squares indicate addition of 2 mgZm 1 of fucoidan F.
- a fucoidan-U described in Example 1 and a fucoidan-F described in Example 2 were added in a 3 OmM HEPE S buffer containing 12 OmM sodium chloride so as to be 1 OmgZm 1 ( pH7), filtered, and added with 0.5 ml. C, and cultured in 5% C0 2 presence.
- the same amount of the above buffer alone was added, and the cells were cultured in the same manner. The number of viable cells at 16 hours and 40 hours after the start of the culture was counted in the same manner as described above.
- Fig. 4 shows the relationship between the culture time and the number of viable cells in the culture solution when fucoidan-1U or fucoidan-1F was added to the culture solution of HL-60 cells at lmg / m1.
- the horizontal axis indicates the culture time, and the vertical axis indicates the number of viable cells in the culture solution.
- the type of fucoidan added to the medium in Fig. 4 is that white circles are fucoidan 1U and black circles are fucoidan 1F.
- the number of viable cells in the culture of the control (no sample added) was 7 ⁇ 10 4 cells after 16 hours of culture, and 1.4 ⁇ 10 5 cells after 40 hours of culture. As a result, it was found that HL-60 cells were induced to undergo apoptosis by fucoidan-1U and fucoidan-1F and the cell growth rate was suppressed.
- Fucoidan-U and Fucoidan-F were dissolved in 3 OmM HEPES buffer (pH 7) containing 12 OmM sodium chloride to a concentration of 1 Omg / m1 and autoclaved at 121 ° C for 20 minutes. Induced action was measured according to the above method, and similar results were obtained.
- mice C3HZHe J
- 5-fluorouracil 5-FU, manufactured by Amresco
- the obtained bone marrow was subjected to density gradient centrifugation using Ficoll Hypaque (Ficoll Hypaque density: 1.0875 g1, Pharmacia) to prepare a low-density mononuclear cell fraction, which was used as mouse bone marrow cells. did.
- Ficoll Hypaque Ficoll Hypaque density: 1.0875 g1, Pharmacia
- the mouse bone marrow cells were subjected to liquid culture in the presence or absence of fucoidan-U described in Example 1 or fucoidan-F described in Example 2. 20% fetal calf serum, 100 units / m1 recombinant human interleukin-1.6 (rhl L-6, manufactured by Amdyne), 100 ngZm1 recombinant mouse stem cell factor (rmSCF, manufactured by Amdyne), The above mouse bone marrow cells were added at a cell density of 1 ⁇ 10 6 Zm1 in 1 MEM (manufactured by Gibco) containing 50 units of Zml of penicillin and 50 zgZnil of streptomycin, and further added fucoidan-U or fucoidan One F was added at a concentration of lmg / ml. This was incubated for 48 hours at 37 ° C. in 5% CO 2 .
- the non-adherent cells were decanted, and the cells adhered to the plate were washed with cell dissociation buffer (CDB, enzyme-free, (Manufactured by Buko Inc.), and the cells were counted together.
- CDB cell dissociation buffer
- HP P-CF C High Proliferative Potential-Colony Forming Cells
- HPP-CFC assay was performed according to the method of Bradley et al. [Aust. J. Exp. Biol. Med. Sci., Vol. 44, pp. 287-293 (1966)]. A 1% / 0.66% layered soft agar medium was used as a medium, and 5 ⁇ 10 4 infected cells were added per well and incubated at 37 ° C. in 10% CO 2 for 13 days. After the incubation, observe the colonies that appeared using an inverted microscope, and! ⁇ ? ? -High-density colonies (diameter 0.5 rara or more) derived from the same were counted.
- FIG. 5 is a diagram showing the relationship between fucoidan and the number of high-density colonies, in which the horizontal axis represents the fucoidan used and the control without fucoidan added, and the vertical axis represents the number of high-density colonies. As shown in FIG. 5, there was no significant difference in the number of high-density colonies formed between the case where fucoidan-1U or fucoidan-1F was added to the medium and the control.
- Myeloma cells (P3X63Ag8U) cultured at 37 ° C in 13 ⁇ 4? 1 ⁇ I 1640 medium (Gibco) containing 10% fetal bovine serum (manufactured by JRH Biosciences) treated at 56 ° C for 30 minutes 1: A scale containing ATCC CRL-1597) and 10% fetal calf serum? ⁇ 1 1640 medium was resuspended to 2.5 ⁇ 10 5 cells / 4.5 ml.
- Each suspension (4.5 m) was dissolved in 5 Om HE PES buffer (pH 7.0) containing 12 OmM sodium chloride to a concentration of 10 mg Zml, and dextran sulfate [ONCO On c 0 r) Inc., molecular weight 500,000] 0. 5 m l was added, and 60 hours of culture at 37, 5% C0 2 presence.
- the cultured cells were observed under a microscope to examine the degree of proliferation and cell morphology.
- the myeloma cells to which dextran sulfate was added exhibited characteristics of apoptosis such as cell shrinkage and fragmentation of cell nuclei.
- control myeloma cells without sample added increased the cell number by about 20-fold, but the myeloma cells to which dextran sulfate was added died, and dextran sulfate showed a strong apoptosis-inducing effect.
- the number of viable cells was counted by trypan-blem staining over time after the start of the culture.
- FIG. 6 shows the results.
- FIG. 6 is a graph showing the relationship between the culture time and the number of viable cells.
- the horizontal axis represents the culture time, and the vertical axis represents the number of viable cells in the culture solution.
- open squares indicate no addition of the sample (control), and open circles indicate the addition of 1 mg of dextran sulfate.
- dextran sulfate [Onco-Og (ml) was dissolved in 50 mM HEPES buffer (pH 7.0) containing 12 OmM sodium chloride to a concentration of lOmgZml and heated at 120 ° C for 20 minutes. r), molecular weight 500,000] and its apoptosis-inducing effect was measured according to the above method.
- FIG. 7 shows the results.
- FIG. 7 is a diagram showing the relationship between the culture time and the number of viable cells.
- the horizontal axis represents the culture time, and the vertical axis represents the number of viable cells in the culture solution.
- open squares indicate no addition of the sample (control), and solid circles indicate the addition of 1 mg // m 1 of heat-treated dextran sulfate.
- a strong apoptosis-inducing effect was also observed with heat-treated dextran sulfate.
- FIG. 8 shows the results.
- the heat-treated Pectin exhibited remarkable apoptosis-inducing activity. That is, Fig. 8 is a diagram showing the relationship between the culture time and the number of viable cells in the culture solution when a heat-treated pectin solution was added to the culture solution of HL-60 cells to 1 mgZm1.
- the horizontal axis indicates the culture time, and the vertical axis indicates the number of viable cells in the culture solution.
- open squares indicate no sample addition (control), and open diamonds indicate addition of heat-treated pectin.
- This fraction was separated by normal-phase HPLC using a PALPAK TypeS column (manufactured by Takara Shuzo) and detected by ultraviolet absorption at 215 nm. Of course, the purity was 98%.
- HUV EC cells primary culture, Clonetics, CC-2517
- CC-2517 which are umbilical vascular endothelial cells
- the cells were suspended in RPMI 1640 medium containing 10% fetal bovine serum at a concentration of 1 ⁇ 10 5 cells / 111.
- the ratio of the absorbance at 590 nm of the section to which cyclopentenone was added to the absorbance at 590 nm of the control section to which water was added and cultured was calculated, and the apoptosis-inducing effect was measured by the cytostatic activity.
- HL-60 cells The same operation was performed for HL-60 cells. However, the cells used were subcultured in RPM11640 medium containing 10% fetal calf serum. As a result, cyclopentenone had a stronger cell growth inhibitory activity on HL-60 cells, a cancer cell line, than on HUVEC cells, which are normal cells.
- Figure 9 shows the results. That is, Fig. 9 shows the relationship between the amount of cyclopentenone added (final concentration) and the degree of cell proliferation.
- the horizontal axis represents the cyclopentenone concentration (final concentration, / M), and the vertical axis represents each Concentration of cyclopen
- the ratio (%) of the absorbance at 590 nm of the tenon-added section to the absorbance at 590 nm of the water-added section is shown.
- open circles show the results when HUVEC was used, and black circles show the results when HL-60 was used. The growth of the cells under microscopic observation and the absorbance at 590 nm were in a parallel relationship.
- NI HZ3T3 cells ATCC CRL- 16 58
- Toribushin 5 X 10 4 cells Zm 10% bovine serum-containing Dal Beck co modified so that 1
- the cells were suspended in Eagle's medium and dispensed in 90 ⁇ 1 portions into a 96-well microtiter plate. 15.6, 3 1.3, 62.5, 125, 250, 500 or 1000 Shikurobe Nteno emissions aqueous water 10 ⁇ 1 was added or as a control, for 48 hours at 5% C0 2 exist under 37 ° C did.
- FIG. 10 is a diagram showing the relationship between the culture time and the viable cell rate of the HUV EC cells.
- the horizontal axis indicates the culture time (hour), and the vertical axis indicates the viable cell rate (%).
- black circles indicate the addition of fucoidan-1U
- white circles indicate the addition of physiological saline (control).
- Fig. 11 shows the relationship between the culture time and the viable cell rate of HL-60 cells.
- the vertical axis indicates the viable cell rate (%) during the period (time).
- solid circles indicate the addition of fucoidan-1U
- open circles indicate the addition of physiological saline (control).
- the present invention provides a hematopoietic stem cell composition containing substantially no cancer cells.
- a foreign gene is introduced into the composition and transferred to the host, there is no risk of introducing the gene into the cancer cells, and the hematopoietic hepatocytes can be safely transferred to the host.
- cancer cells in the target cell composition for gene transfer can be removed, and the safety of gene transfer is not established.
- FIG. 1 is a graph showing the precipitate forming properties of Fucoidan-U and F.
- FIG. 2 is a graph showing the relationship between the culture time in the presence of fucoidan U and F and the number of viable cells.
- FIG. 3 is an enlarged graph of the scale on the vertical axis of FIG.
- Figure 4 is a graph showing the relationship between the culture time of HL-60 cells and the number of viable cells.
- FIG. 5 is a graph showing the relationship between fucoidan and the number of high-density colonies.
- FIG. 6 is a graph showing the relationship between the culture time in the presence of dextran sulfate and the number of viable cells.
- FIG. 7 is a graph showing the relationship between the culture time in the presence of heated dextran sulfate and the number of viable cells.
- FIG. 8 is a graph showing the relationship between the culture time in the presence of a heat-treated pectin and the number of viable cells.
- FIG. 9 is a graph showing the relationship between the amount of cyclopentenone added and cell proliferation.
- FIG. 10 is a graph showing the relationship between the culture time of HUV EC cells and the viable cell rate.
- FIG. 11 is a graph showing the relationship between the culture time of HL-60 cells and the viable cell rate.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Genetics & Genomics (AREA)
- Zoology (AREA)
- Organic Chemistry (AREA)
- Biotechnology (AREA)
- Chemical & Material Sciences (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Wood Science & Technology (AREA)
- Microbiology (AREA)
- Cell Biology (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Hematology (AREA)
- Developmental Biology & Embryology (AREA)
- Immunology (AREA)
- Oncology (AREA)
- Molecular Biology (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50503598A JP3683912B2 (ja) | 1996-07-10 | 1997-06-30 | 細胞組成物 |
EP97928515A EP0930361B1 (en) | 1996-07-10 | 1997-06-30 | Cell compositions |
DE69722799T DE69722799T2 (de) | 1996-07-10 | 1997-06-30 | Zellzusammenstellungen |
AU32766/97A AU3276697A (en) | 1996-07-10 | 1997-06-30 | Cell compositions |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18050096 | 1996-07-10 | ||
JP8/180500 | 1996-07-10 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09214609 A-371-Of-International | 1999-01-08 | ||
US09/797,821 Continuation-In-Part US20010018209A1 (en) | 1996-07-10 | 2001-03-05 | Cell compositions |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998001537A1 true WO1998001537A1 (fr) | 1998-01-15 |
Family
ID=16084333
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1997/002254 WO1998001537A1 (fr) | 1996-07-10 | 1997-06-30 | Compositions cellulaires |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0930361B1 (ja) |
JP (1) | JP3683912B2 (ja) |
AU (1) | AU3276697A (ja) |
CA (1) | CA2260325A1 (ja) |
DE (1) | DE69722799T2 (ja) |
TW (1) | TW527421B (ja) |
WO (1) | WO1998001537A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002525042A (ja) * | 1998-09-11 | 2002-08-13 | ユニヴァーシティー オブ エディンバラ | 胚幹細胞の増殖および/または誘導 |
WO2006090815A1 (ja) * | 2005-02-25 | 2006-08-31 | Itoham Foods Inc. | プリオン病発症予防剤とそれを含む食品添加剤及び飼料添加剤 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU720004B2 (en) * | 1996-01-26 | 2000-05-18 | Research Institute For Glycotechnology | Apoptosis inducers |
EP1277472A4 (en) * | 2000-04-28 | 2005-06-08 | Orient Cancer Therapy Co Ltd | REMEDIES AGAINST CANCER |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995026200A1 (en) * | 1994-03-25 | 1995-10-05 | Indiana University Foundation | Enhanced virus-mediated dna transfer |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0642793A4 (en) * | 1992-05-11 | 1995-03-29 | Tsumura & Co. | Apoptosis inducer. |
JP4429386B2 (ja) * | 1994-12-01 | 2010-03-10 | 生化学工業株式会社 | ケラタン硫酸オリゴ糖画分及びそれを含む薬剤 |
-
1997
- 1997-06-30 EP EP97928515A patent/EP0930361B1/en not_active Expired - Lifetime
- 1997-06-30 CA CA002260325A patent/CA2260325A1/en not_active Abandoned
- 1997-06-30 WO PCT/JP1997/002254 patent/WO1998001537A1/ja active IP Right Grant
- 1997-06-30 DE DE69722799T patent/DE69722799T2/de not_active Expired - Fee Related
- 1997-06-30 JP JP50503598A patent/JP3683912B2/ja not_active Expired - Fee Related
- 1997-06-30 AU AU32766/97A patent/AU3276697A/en not_active Abandoned
- 1997-07-03 TW TW086109395A patent/TW527421B/zh not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995026200A1 (en) * | 1994-03-25 | 1995-10-05 | Indiana University Foundation | Enhanced virus-mediated dna transfer |
Non-Patent Citations (3)
Title |
---|
BLOOD, (1994), Vol. 84, 10, Supplement 1, GUNNAR KYALHEIM et al., "Triggering of APO-1/FAS Antigen (CD95) Selectively Kills Leukamic Cells Without Compromising Hematopoietic Stem Cells", pp. 570A. * |
EUROPEAN JOURNAL OF CANCER & CLINICAL ONCOLOGY, (1989), Vol. 25(2), BRON D., STRYCKMAN P., "Removal of Tumor Cells from Bone Marrow Overview", p. 163-166. * |
See also references of EP0930361A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002525042A (ja) * | 1998-09-11 | 2002-08-13 | ユニヴァーシティー オブ エディンバラ | 胚幹細胞の増殖および/または誘導 |
WO2006090815A1 (ja) * | 2005-02-25 | 2006-08-31 | Itoham Foods Inc. | プリオン病発症予防剤とそれを含む食品添加剤及び飼料添加剤 |
Also Published As
Publication number | Publication date |
---|---|
JP3683912B2 (ja) | 2005-08-17 |
AU3276697A (en) | 1998-02-02 |
DE69722799T2 (de) | 2004-05-06 |
TW527421B (en) | 2003-04-11 |
CA2260325A1 (en) | 1998-01-15 |
EP0930361A1 (en) | 1999-07-21 |
EP0930361B1 (en) | 2003-06-11 |
DE69722799D1 (de) | 2003-07-17 |
EP0930361A4 (en) | 2000-04-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3555766B2 (ja) | アポトーシス誘発剤 | |
US20080166325A1 (en) | Method of extensive culture of antigen-specific cytotoxic T cells | |
JP4223550B2 (ja) | ウイルスの精製および除去方法 | |
WO1996034004A1 (fr) | Composes de sucre | |
US20070166797A1 (en) | Devices and solutions for prevention of sexually transmitted diseases | |
EP1176153B1 (en) | Sulfated fucogalactan | |
JP4262601B2 (ja) | 硫酸化フカン | |
WO1998001537A1 (fr) | Compositions cellulaires | |
US20010018209A1 (en) | Cell compositions | |
US20050042733A1 (en) | Method for preparing heparin from mast cell cultures | |
KR100458602B1 (ko) | 세포조성물 | |
JP3854063B2 (ja) | 糖化合物 | |
JP3506672B2 (ja) | フコース硫酸含有多糖 | |
TWI237026B (en) | Fucose sulfuric acid-containing polysaccharide, the preparing method thereof and the anti-cancer agent and preventing agent for inducement of cancer | |
JP3916394B2 (ja) | フコース硫酸含有多糖 | |
JP3503821B2 (ja) | エンド型フコース硫酸含有多糖分解酵素 | |
JP3497817B2 (ja) | 硫酸化フコガラクタン分解酵素 | |
JP2001224394A (ja) | 低分子化物 | |
CN1224460A (zh) | 细胞组合物 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 97196137.9 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AU BG BR CA CN CZ HU JP KR MX NO NZ PL RO SK US VN AM AZ BY KG KZ MD RU TJ TM |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1019980708857 Country of ref document: KR |
|
ENP | Entry into the national phase |
Ref document number: 2260325 Country of ref document: CA Ref document number: 2260325 Country of ref document: CA Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1997928515 Country of ref document: EP Ref document number: 09214609 Country of ref document: US |
|
WWP | Wipo information: published in national office |
Ref document number: 1997928515 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1019980708857 Country of ref document: KR |
|
WWG | Wipo information: grant in national office |
Ref document number: 1997928515 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 1019980708857 Country of ref document: KR |