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52 results about "Low-Serum Media" patented technology

Culture medium additive for use in serum-free culturing of animal cell, kit and use thereof

ActiveUS20100279412A1Facilitate animal cell proliferationCulture processCell culture mediaSerum freePhospholipid
Disclosed are: a culture medium containing a specific growth factor and at least one phospholipid; a composition for preparation of the culture medium; a kit; and a method. A technique can be provided which uses a serum-free or low-serum culture medium and has a promoting effect on the proliferation of an animal cell comparable to the promoting effect obtained by the culture in a serum-containing culture medium.
Owner:TWO CELLS

Specific culture medium for lung tumor organ and stentless 3D culturing method

ActiveCN110592022AStrong cell stemnessRetain heterogeneityCulture processCell culture active agentsY-27632HEPES
The invention discloses a specific culture medium for a lung tumor organ and a stentless 3D culturing method. The specific culture medium is prepared from the following components: FBS, double antibody, N-2, Noggin, B-27, EGF, FGF-10, Y-27632, A 83-01, SB202190, N-acetylcysteine, HEPES, Glutamax, IGF-1, hydrocortisone and Advanced DMEM / F12. The culturing method comprises the following steps: adding a tumor cell into a low serum culture medium, re-suspending the tumor cell, inoculating the tumor cell into a culture vessel, adding the specific culture medium into the culture vessel, changing thespecific culture medium once a day, and performing culturing until an organoid is formed. According to the culture medium and culturing method, a tumor organoid can quickly generate, can be stably cultured for a long time, is regular in spheroid form and has uniform and controllable size, and the heterogeneity of a tumor tissue of a patient can be well maintained in vitro.
Owner:浙江弘瑞医疗科技有限公司

ST cell adapting to full-suspension culture, and application thereof, and vaccine virus culturing method

ActiveCN105112352ASolve the requirements of cultivating large-scale industrializationHigh degree of automationMicroorganism based processesVertebrate cellsVaccine virusEngineering
The invention relates to an ST cell adapting to full-suspension culture, and an application in vaccine virus culturing, and belongs to biotechnical field. The ST cell adapting to full-suspension culture is named as a swine testicle cell suspension adaptation strain ST-2014S, and is preserved in China Center for Type Culture Collection on May 13, 2015 with the preservation number of CCTCC C201567. The invention also discloses a method for culturing a vaccine virus through using the full-suspension adaptation ST cell. Compared with vaccine viruses in the prior art, the full-suspension adaptation ST cell cultured vaccine virus has the advantages of high automation degree, no need of vector intervention, realization of suspension culture in a serum-free or low-serum medium, meeting of large-scale industrial requirements of virus culture, development of a large-scale production method meeting GMP production technology requirements, and very good industrial application prospect.
Owner:郑州爱科生物科技有限公司

Low-serum culture medium suitable for growth of Vero cells

The invention provides a low-serum culture medium suitable for the growth of Vero cells. The dosage of calf serum for conventional culture is reduced to 2 percent from 10 percent (which is the contentof a component V), and conventionally added animal derived components are replaced with plant derived components and recombinant protein. According to the low-serum culture medium provided by the invention, the dosage of the serum is reduced, so that the cost is reduced, and the possibility that the serum in the culture medium carries exogenous pathogenic bacterium pollution is reduced; meanwhile, a lot of hybrid proteins in the serum are reduced and separation and purification of down-stream products are facilitated; plant hydrolyzed protein and recombinant endothelial growth factors are used for replacing the animal derived components so that the side effect of the animal derived components is reduced and the safety of biological products is improved. According to the culture medium provided by the invention, the Vero cells grow well and the cost is reduced; the exogenous pathogenic bacterium pollution is reduced, a post-period purification technology is reduced and the stability ofproducing cell products is improved; one good-quality culture medium is provided for producing the biological products which take the Vero cells as virus hosts or expression vectors.
Owner:宁波高新区绿元汇生物科技有限公司

Low serum medium for cultivating human mesenchymal stem cells

The invention relates to a low serum medium for cultivating human mesenchymal stem cells. The medium comprises the following components: 1-100[mu]g / ml of recombinant human insulin, 1-50ng / ml of basic fibroblast growth factor, 1-50[mu]g / ml of human transferrin, 1-80[mu]g / ml of seleninic acid, 1-300[mu]g / ml of serine, 1-200[mu]g / ml of choline chloride, 1-60[mu]g / ml of adenine, 1-100[mu]g / ml of single acetamide, 0.01-10mmol / ml of o-phosphorylethanolamine 1-50pg / ml of three iodine thyroid, 1-50[mu]l / ml of fetal calf serum. The medium has the characteristics of maintenance of good stem cell characters and high cell proliferation capability; and the medium reduces dependence of stem cells for fetal calf serum, reduces bad influences of the fetal calf serum for stem cell characteristics and differentiation, reduces fetal calf serum, and accords with clinic applications.
Owner:广州美萨生物科技有限公司

Low-serum culture medium for high-density suspension culture of BHK-21 cells and application of low-serum culture medium in proliferation of FMDVs (foot and mouth disease viruses)

The invention discloses a low-serum culture medium for high-density suspension culture of BHK-21 cells and an application of the low-serum culture medium in proliferation of FMDVs (foot and mouth disease viruses). According to researches on the metabolism level and mutual adjustment of nutritional substances such as glucose and the like in the growth process of the BHK-21 cells, the low-serum culture medium for individual BHK-21 cells is provided and comprises an amino acid part, a vitamin part, a balanced salt part and other additive parts. The culture medium is used for high-density suspension culture of the BHK-21 cells, the effective utilization rate of the nutritional substances by the cells can be greatly increased, the concentration of metabolism byproducts is reduced, and accordingly, the cell culture efficiency is improved; besides, the BHK-21 cells cultured by the culture medium have increased sensitivity for different serums of animals suffering from FMDV, the content of effective antigens 146S of the viruses is substantially increased, the purposes of high cell growth efficiency, cell growth controllability and minimization of the concentration of the metabolism byproducts are achieved, the production efficiency of biological products is higher, the production cost is lower, and the low-serum culture medium has remarkable economic benefits.
Owner:CHINA AGRI VET BIO SCI & TECH +1

Vero E6 cell strain adapting to full-suspension culture and application thereof

ActiveCN107267443AHigh degree of automationSolve the requirements of cultivating large-scale industrializationArtificial cell constructsViruses/bacteriophagesSerum freeVaccine virus
The invention discloses a vero E6 cell strain adapting to full-suspension culture, the vero E6 cell strain is named as vero E6-s, and is preserved in China Center for Type Culture Collection, the preservation number is CCTCC2017101, the vero E6 cell strain is classified and named as Vero cell suspension adaptive strain VeroE6-S, and the preservation date is June 29, 2017. Compared with the prior art, the vero E6 cell strain adapting to the full-suspension culture has high degree of automation for culture of vaccine viruses, can be suspended and cultured in a serum-free or low-serum medium without carrier intervention, and solves large-scale industrialization requirements of virus cultivation, a large-scale production method meeting GMP production technology requirements can be developed, and the large-scale production method has a good prospect of industrialization.
Owner:郑州爱科生物科技有限公司

Cat kidney cell line F-81 S adaptive to full suspension cultivation, and applications thereof

ActiveCN107299078AHigh degree of automationSolve the requirements of cultivating large-scale industrializationSsRNA viruses positive-senseMicroorganism based processesVirus CultivationSerum free
The invention discloses a cat kidney cell line F-81 S adaptive to full suspension cultivation and named as F-81 S. The cat kidney cell line is classified and named as cat kidney cell suspension adapted strain F81S and is preserved at June 29th, 2017, with the preservation number of CCTCC NO:C201799. Compared with the prior art, the cell culture vaccine of the F-81 S adaptive to full suspension cultivation is high in virus automation degree, does not require carrier intervention, can be cultured in a suspended manner in serum-free or low-serum culture medium, solves the large-scale industrial requirements of virus cultivation, develops a large-scale production method capable of meeting GMP production technical requirement, and has good industrial application prospects.
Owner:郑州爱科生物科技有限公司

Mycoplasma ovipneumoniae low-serum medium and preparation method thereof

The invention discloses a mycoplasma ovipneumoniae low-serum medium, which consists of the following components: a PPLO broth, sodium pyruvate, phenol red, de-ionized water, lactose, tryptone, a fresh yeast extract, insulin, L-glutamine, L-cysteine, lactoalbumin hydrolysate, transferrin, penicillin and little horse serum; and the invention provides a preparation method of the mycoplasma ovipneumoniae low-serum medium. The mycoplasma ovipneumoniae medium provided by the invention has the following beneficial effects: a serum content is merely 5%, which is 1 / 4 of the serum content of a medium in the prior art, and the living bacterium titer of cultivated mycoplasma ovipneumoniae reaches 7*10<9> CCU / mL or above, which is significantly higher than that of the medium in the prior art. In comparison with the prior art, the mycoplasma ovipneumoniae low-serum medium provided by the invention has the characteristics of being low in serum content, rapid in growth and high in living bacterium titer.
Owner:LANZHOU INST OF VETERINARY SCI CHINESE ACAD OF AGRI SCI

Low serum medium for full-suspending culture of MDCK cells

The invention provides a low serum medium for full-suspending culture of MDCK cells. The medium is prepared from 5,000 mg / L to 6,500 mg / L of DMEM / F12 medium, nickel chloride NiCl2.6H2O, ammonium heptamolybdate (NH4) 6Mo7O24.4H2O, stannous chloride SnCl2.2H2O, ammonium metavanadate NH4VO3, sodium silicate Na2SiO3.9H2O, vitamin A, vitamin E, human transferrin, recombulin, glutathione, sodium selenite, vegetable protein hydrolysate, recombinant human serum albumin and PF68. New-born calf serum with the volume percent fraction of 3% to 5% is added to the medium, the medium is inoculated with the MDCK cells, cell density can be increased to 421*106 / ml, and the cell activity is still 92.3% at this moment.
Owner:令世鑫 +3

Method for producing porcine epizootic diarrhea CV777 strain virus by cultivating Vero cell in low serum

The invention discloses a method for producing a porcine epizootic diarrhea CV777 strain virus by using cultivating a Vero cell in low serum, and belongs to the technical field of veterinarian biological sciences. The method comprises the following steps: S1, preparing a culture medium for the passage and cultivation of the cell; S2, domesticating the cell to adapt to a low-serum culture medium; S3, domesticating the cell to adapt to the low-serum cultivation environment; S4, propagating cellular virus seeds; and S5, propagating the prepared virus solutions. Through the adoption of the method for producing the porcine epizootic diarrhea CV777 strain virus by using the low-serum cultivated Vero cell provided by the invention, the production cost can be obviously lowered, the downstream purification efficiency can be improved, the production scale can be fast and stably enlarged, and the balanced and stable quality can be easily realized.
Owner:成都史纪生物制药有限公司

Application of mesenchymal stem cells in preparation of products for treating rheumatoid arthritis

The invention discloses application of mesenchymal stem cells in preparation of products for treating rheumatoid arthritis. The invention provides application of the mesenchymal stem cells or cell preparations of the mesenchymal stem cells in preparation of drugs for treatment of rheumatoid arthritis. The preparation method of the cell preparations includes the following steps: adopting a tissue block in a Warton zone of the umbilical cord as a raw material, and preparing the umbilical cord mesenchymal stem cells so as to obtain the cell preparations, wherein a low-serum culture medium is adopted in the preparation process. The cell preparations are suitable for cell therapy of rheumatoid arthritis and other diseases related to rheumatoid arthritis, wherein complications and diseases withsimilar pathogenesis of the diseases related to rheumatoid arthritis include rheumatoid vasculitis, pneumonia, osteoarthritis, rheumatoid heart disease, ankylosing spondylitis, gout, eye diseases, kidney diseases, urinary system infection, Cushing's syndrome, oral ulcers and other diseases. A great application value is provided for treatment of rheumatoid arthritis and related diseases.
Owner:TSINGHUA UNIV

Method for producing ring II type DBN-SX07 strain virus for pigs by seroculturing PK-15 cells

The invention discloses a method for producing ring II type DBN-SX07 strain virus for pigs by seroculturing PK-15 cells, and belongs to the technical field of biology of veterinaries. The method comprises the following steps: S1. performing passage and culture of cells; S2. domesticating the cells to enable the cells to be adapted for low seroculture bases; S3.domesticating the cells to enable the cells to be adapted for low seroculture environment; S4. propagation of cell virus seeds; S5. propagation of a prepared toxin liquid. The method for producing ring II type DBN-SX07 strain virus for pigs by seroculturing PK-15 cells, provided by the invention, can reduce the production cost obviously, besides, can improve the downstream purifying efficiency, and can rapidly and stably extend the production scale. Through the adoption of the method, balancing and stabilizing the quality is easy to realize.
Owner:成都史纪生物制药有限公司

Method for producing propagation and respiratory tract syndrome CH-1R strain viruses for pigs by seroculturing Marc-145 cells

The invention discloses a method for producing propagation and respiratory tract syndrome CH-1R strain viruses for pigs by seroculturing Marc-145 cells, and belongs to the technical field of biology of veterinaries. The method comprises the following steps: S1. performing passage and culture of cells; S2. domesticating the cells to enable the cells to be adapted for low seroculture bases; S3.domesticating the cells to enable the cells to be adapted for low seroculture environment; S4. propagation of cell virus seeds. The method for producing propagation and respiratory tract syndrome CH-1R strain viruses for pigs by seroculturing Marc-145 cells, provided by the invention, can reduce the production cost obviously, besides, can improve the downstream purifying efficiency, and can rapidly and stably extend the production scale. Through the adoption of the method, balancing and stabilizing the quality is easy to realize.
Owner:成都史纪生物制药有限公司

Low serum culture medium for BHK-21 cell culture and corresponding virus production

The invention discloses a low serum culture medium for BHK-21 cell culture and corresponding virus production. The low serum culture medium is prepared from the following components: amino acid, a vitamin, inorganic salts, a protein, microelements and auxiliary components; the amino acid comprises glycine, L-arginine monohydrochloride, L-asparaginate, L-glutamic acid, L-glutamine, L-lysine hydrochloride and L-serine; and the protein comprises 4-HEPES, sodium dihydrogen phosphate monohydrate, milk protein hydrolysate, bovine serum albumin and recombinant human insulin. According to the low serum culture medium for the BHK-21 cell culture and the corresponding virus production, serum is no longer needed to be added in the maintenance stage of a pseudorabies vaccine produced from a BHK-21 cell, dosage of the serum is further reduced, the good growth state of cells can still be maintained, virus titer is improved, reduction of poison value of a semi-finished product is small, and preservation time of the semi-finished product is prolonged.
Owner:山东巨山能源科技有限公司

Composition comprising stem cell active substance and method for preparing same

The invention provides a composition containing stem cell active substance and a preparation method thereof, wherein the composition comprises stem cells and a culture medium, wherein the culture medium is a low-serum culture medium or a serum-free culture medium. A kit comprising the composition is also disclosed. The composition comprising the stem cell active substance has high freeze-thaw reliability.
Owner:厦门神雁再生医学科技有限公司

Marc-145 cell low-serum culture medium and preparation method thereof

InactiveCN106244518AThe composition is simple and clearEasy to getCulture processArtificial cell constructsHydrolysateHEPES
The invention discloses a Marc-145 cell low-serum culture medium. The marc-145 cell low-serum culture medium is prepared from the following components in parts by weight: 157-345 parts of amino acid or salt thereof, 300-580 parts of D-glucose, 390-850 parts of inorganic salt, 1.5-4.2 parts of vitamin, 2-3 parts of vegetable protein hydrolysate, 0.003-0.004 part of microelements, 0.003-0.010 part of glutathione, 0.00002-0.00005 part of hydrocortisone, 0.01-0.03 part of hypoxanthine, 0.0008-0012 part of linoleic acid, 0.0012-0.0027 part of insulin, 0.001-0.005 part of phenol red, and 100-300 parts of HEPES. The Marc-145 cell low-serum culture medium is simple in component, relatively low in relative cost and stable in quality, and the preparation method of the culture medium is easy to operate and easy to control.
Owner:TIANXINHE SUZHOU BIOTECH CO LTD

Low-serum culture medium for Vero cell culture and corresponding virus production

The invention discloses a low-serum culture medium for Vero cell culture and corresponding virus production. The low-serum culture medium comprises the following constitution components: amino acids,vitamins, inorganic salts, proteins and auxiliary components, wherein the amino acids comprise glycine, arginine hydrochloride, glutamine, lysine hydrochloride, serine, disodium tyrosine dehydrate andvaline; and the proteins comprise whole albumin, lactoalbumin hydrolysate (LAH), saturated-iron human transferrin, whole-chain recombulin, 4-ethoxy piperazine ethanesulfonic acid (HEPES). In production of vaccines for porcine epidemic diarrhea viruses through Vero cell amplification, the culture medium disclosed by the invention is simple in formula component, low in cost and easy to prepare, anda good growth state of cells can be kept while cell culture effects are effectively improved.
Owner:山东巨山能源科技有限公司

Low serum medium applicable to culturing of LMHs cell adhering to walls and preparation method of low serum medium

The invention provides a low serum medium applicable to culturing of LMHs cells adhering to walls and a preparation method of the low serum medium, and belongs to the field of biological products. Theculture medium includes fumaric acid, succinate, betaine, cysteamine, dextran, pyridoxine phosphate, beta-mercaptoacetic acid, chromium picolinate, carnitine hydrochloride, Glutamine-S, selenomethionine and other substances. The low serum medium applicable to culturing of the LMHs cells adhering to the walls prepared by the invention is clear in component, free of protein components, free of animal-derived components, low in blood serum dosage (2%-3%), and high in virus yield, can be used for preparing adenovirus of which the titer can reach 109TCID50 / ml, and can be used for culturing the LMHcells which grow uniformly and will not grow in clusters.
Owner:SICHUAN BAINUOJI TECH CO LTD

Application of progesterone in stimulation of fibronectin secretion of mesenchymal stem cells

The invention belongs to the field and tissue culture, and especially relates to an application of progesterone in stimulation of the fibronectin secretion of mesenchymal stem cells. Fibronectins are needed when mesenchymal stem cells are cultured under a serum-free or low-serum condition to increase the adhesion of the mesenchymal stem cells, and the fibronectins are expensive, so the culture cost is high. The invention discloses a micro-molecular substance progesterone also called luteosterone or pregnenedione. The molecular formula of progesterone is C21H30O2, the molecular weight is 314.46, and progesterone can stimulate mesenchymal stem cells to synthesize the fibronectins in order to promote adhesion of the mesenchymal stem cells. Adhesion molecules needed by the cells are synthesized by the cells through processing the cells by using progesterone via utilizing the activity of the mesenchymal stem cells, so the cost of the serum-free or low-serum culture medium of the mesenchymal stem cells is greatly reduced, the adhesion ability of the progesterone processed mesenchymal stem cells is enhanced, and the progesterone processed mesenchymal stem cells can be used for constructing engineered tissues based on the mesenchymal stem cells.
Owner:河南中科干细胞基因工程有限公司

Cell preparation capable of treating allergic rhinitis

InactiveCN110731970ARegulate immune balanceControl allergy symptomsCell dissociation methodsMammal material medical ingredientsMesenchymal stem cellPharmaceutical drug
The invention discloses a cell preparation capable of treating allergic rhinitis. The invention first protects application of mesenchyma stem cells in preparation of drugs used for treating allergic rhinitis. The invention further protects a preparation method of a cell preparation. The preparation method of the cell preparation comprises the following step of preparing umbilical cord mesenchymalstem cells by using a Wharton-area tissue block of the umbilical cord as a raw material, thereby obtaining the cell preparation; and a low-serum medium is adopted during the preparation process. The invention still further protects application of the cell preparation in preparation of drugs used for treating allergic rhinitis. The cell preparation provided by the invention is suitable for cell therapy of allergic rhinitis. The cell preparation is of great application values to treatment of allergic rhinitis.
Owner:TSINGHUA UNIV

Vero cell low-serum culture medium and application thereof

The invention relates to a Vero cell low-serum culture medium and an application thereof. The Vero cell low-serum culture medium comprises a basal culture medium and an additive component, wherein thebasal culture medium is prepared from the following components; DMEM / F12, the additive component is composed of the following components with the final concentration: 1 to 10mg / L of disodium ethylenediamine tetraacetate, 5 to 30 mg / L of dihydrate ethanolamine hydrochloride, 2 to 25 mg / L of ethylenediamine tetraacetic acid ferric sodium salt, 0.005 to 0.02 mg / L of recombinant epidermal growth factor (rhEGF), 50 to 80 mg / L of inositol, 0.5 to 5 mg / L of vitamin B6 and 0.01 to 0.3 mg / L of vitamin B7. The invention also comprises the application of the culture medium in Vero cell culture. The Vero cell culture medium has the advantages that Vero cells grow well in the culture medium, the production stability of biological products is improved, and the complexity degree and the production costof a later purification process are reduced.
Owner:苏州依科赛生物科技股份有限公司

A low-serum medium for high-density suspension culture of bhk-21 cells and its application in the proliferation of foot-and-mouth disease virus

The invention discloses a low-serum culture medium for high-density suspension culture of BHK-21 cells and an application of the low-serum culture medium in proliferation of FMDVs (foot and mouth disease viruses). According to researches on the metabolism level and mutual adjustment of nutritional substances such as glucose and the like in the growth process of the BHK-21 cells, the low-serum culture medium for individual BHK-21 cells is provided and comprises an amino acid part, a vitamin part, a balanced salt part and other additive parts. The culture medium is used for high-density suspension culture of the BHK-21 cells, the effective utilization rate of the nutritional substances by the cells can be greatly increased, the concentration of metabolism byproducts is reduced, and accordingly, the cell culture efficiency is improved; besides, the BHK-21 cells cultured by the culture medium have increased sensitivity for different serums of animals suffering from FMDV, the content of effective antigens 146S of the viruses is substantially increased, the purposes of high cell growth efficiency, cell growth controllability and minimization of the concentration of the metabolism byproducts are achieved, the production efficiency of biological products is higher, the production cost is lower, and the low-serum culture medium has remarkable economic benefits.
Owner:CHINA AGRI VET BIO SCI & TECH +1

Preparation method of MDCK suspension cell

The invention relates to the field of cell culture, and particularly discloses a preparation method of MDCK suspension cells, wherein the preparation method comprises the following steps: subculturingthe MDCK cells by sequentially using DMEM / F12 culture medium containing 8%, 5% and 2% of fetal calf serum; sequentially culturing the mixed culture liquid of the DMEM / F12 culture medium and low-serumculture medium according to the volume ratio of 1:1, 1:5 and 0:1; performing digestion and centrifugation; performing shaking culture on the obtained cells by using the low-serum medium at a rotate speed of 20-30r / min; gradually increasing the rotate speed of the shaking table until the cells completely losing the ability of adhering to the flask wall are obtained, and the cells are cell strainsobtained through low-serum suspension culture; collecting the cells, and gradually increasing the content of serum-free culture medium, after stable growth, the MDCK cells obtained through serum-freesuspension culture are obtained. The method, sought gradually through a large number of experiments, is simple and convenient and easy in factory production.
Owner:吉林冠界生物技术有限公司

A kind of low serum culture medium of ovine mycoplasma pneumoniae and preparation method thereof

The invention discloses a mycoplasma ovipneumoniae low-serum medium, which consists of the following components: a PPLO broth, sodium pyruvate, phenol red, de-ionized water, lactose, tryptone, a fresh yeast extract, insulin, L-glutamine, L-cysteine, lactoalbumin hydrolysate, transferrin, penicillin and little horse serum; and the invention provides a preparation method of the mycoplasma ovipneumoniae low-serum medium. The mycoplasma ovipneumoniae medium provided by the invention has the following beneficial effects: a serum content is merely 5%, which is 1 / 4 of the serum content of a medium in the prior art, and the living bacterium titer of cultivated mycoplasma ovipneumoniae reaches 7*10<9> CCU / mL or above, which is significantly higher than that of the medium in the prior art. In comparison with the prior art, the mycoplasma ovipneumoniae low-serum medium provided by the invention has the characteristics of being low in serum content, rapid in growth and high in living bacterium titer.
Owner:LANZHOU INST OF VETERINARY SCI CHINESE ACAD OF AGRI SCI

ST cell low serum medium and preparation method thereof

InactiveCN106011050AThe composition is simple and clearEasy to getCulture processArtificial cell constructsHydrolysatePhenol
The invention discloses an ST (swine testis) cell low serum medium, which comprises: 110-250 parts of amino acid or its salt, 210-280 parts of D-glucose, 120-240 parts of an inorganic salt, 1-2 parts of vitamin, 2-3 parts of vegetable protein hydrolysate, 0.002-0.003 part of trace element, 0.008-0.012 part of glutathione, 0.00004-0.00009 part of hydrocortisone, 0.01-0.03 part of hypoxanthine, 0.0006-0.0010 part of linoleic acid, 0.026-0.038 part of insulin, 0.005-0.01 part of phenol red, and 90-280 parts of HEPES. The medium provided by the invention has the characteristics of simple composition, relatively low cost, and stable quality, the preparation method of the medium is simple to operate and is easy to control, all the components are uniformly dispersed in the medium, and different batches of mediums have small differences.
Owner:TIANXINHE SUZHOU BIOTECH CO LTD

Method for producing porcine reproductive and respiratory syndrome JXA1-R strain virus by using low serum cultured Marc-145 cells

The invention discloses a method for producing a porcine reproductive and respiratory syndrome JXA1-R strain virus by using low serum cultured Marc-145 cells, and belongs to the technical field of veterinary biology. The method comprises the following steps: S1, carrying out passage and culture on cells for preparation; S2, domesticating the cells to adapt to a low serum culture medium; S3, domesticating the cells to adapt to a low serum culture environment; and S4, reproducing a cytotoxic strain. By adopting the method for producing the porcine reproductive and respiratory syndrome JXA1-R strain virus by using the low serum cultured Marc-145 cells, disclosed by the invention, the production cost can be significantly reduced, and the downstream purification efficiency can also be improved; and moreover, the production scale can be expanded rapidly and stably, and balanced and stable quality can be easily achieved.
Owner:成都史纪生物制药有限公司

Composition for promoting growth of stem cells comprising phytosphingosine-1-phosphate or derivatives thereof, and composition for culturing media of stem cells comprising same

The present application relates to a composition for promoting proliferation of adult stem cells further comprising phytosphingosine-1-phosphate (P1P), O-cyclic P1P (cP1P), N-acetylphytosphingosine-1-phosphate (NAPS-1-P), and a pharmaceutically acceptable salt thereof in a basal medium, a composition for culturing adult stem cells comprising the same, or a composition for a serum-free or low-serum culture medium of adult stem cells. When the stem cells are cultured using the composition of the present application, the proliferation promotion, activity and differentiation capacity of the stem cells can be improved, and the death of the stem cells against external stress can be prevented.
Owner:AXCESO BIOPHARMA CO LTD

Method of preparing mink canine distemper antigen-protein composite, the antigen-protein composite and applications thereof

ActiveCN109280649ASolve the disadvantages of poor susceptibility and slow proliferationEnding the Spinning EraSsRNA viruses negative-senseViral antigen ingredientsAntigenMink
The invention relates to a method of preparing a mink canine distemper antigen-protein composite, the antigen-protein composite and applications thereof and belongs to the field of bio-pharmacy. In the invention, mink canine distemper virus is cultured and domesticated by a low-serum culture medium with suspension of VeroE6-TY cell strain; then the domesticated virus is inoculated to a low-serum culture liquid with suspension of VeroE6-TY cell strain; then after cultivation and proliferation, a virus liquid is collected to obtain the mink canine distemper antigen-protein composite. For the mink canine distemper antigen-protein composite, conversion from spinner bottle adherent culture into large-scale cell suspension culture is achieved, so that production process is simplified and production cost is reduced; in addition, quality and yield of the product are greatly improved.
Owner:JL TEYAN BIOLOGICAL TECH LIMITED LIABILITY
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