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92 results about "Progesterones" patented technology

A type of female sex hormone

Preparation method of pregnanolone

ActiveCN119751535ASteroidsBulk chemical productionPtru catalystPregnanolone
The invention provides a preparation method of pregnanolone, which comprises the following steps: 1) under the action of a first catalyst, progesterone and anhydride react to obtain a compound as shown in a formula (I); 2) under the action of a dehydrating agent and a second catalyst, diol reacts with the compound shown in the formula (I), and a compound shown in a formula (II) is obtained after deprotection; 3) under the action of a ligand and a third catalyst, selectively reducing the compound as shown in the formula (II) by hydrogen to obtain a compound as shown in a formula (III); and 4) reacting the compound as shown in the formula (III) with a reducing agent, and deprotecting to obtain pregnanolone. According to the present invention, progesterone is adopted as the starting material, enol esterification reaction, ketal protection, ester group hydrolysis, hydrogenation and reduction hydrolysis are performed to obtain pregnanolone, the method has characteristics of mild condition, conventional reagent, simple operation and suitableness for industrialization, the obtained product has characteristics of good quality, purity of more than 99.0%, and total yield of about 90.0%.
Owner:ZHEJIANG XIANJU PHARMA

Progesterone 5beta-reductase mutant and application thereof in synthesis of 5beta-dihydrosteroid

The invention discloses a progesterone 5beta-reductase mutant and application thereof in synthesis of 5beta-dihydrosteroid, relates to the technical field of biology, and in particular relates to application of gene mining and engineering modification of progesterone 5beta-reductase derived from bacteria in asymmetric synthesis of 5beta-dihydrosteroid. According to the progesterone 5 beta-reductase LpP5beta R disclosed by the invention, the progesterone 5 beta-reductase LpP5beta R from bacteria psoromais is obtained by a gene mining method, and the progesterone 5 beta-reductase LpP5beta R can be subjected to soluble expression in escherichia coli. The mutant obtained by mutating the wild type LpP5beta R has obviously improved catalytic ability on progesterone, and can efficiently catalyze delta 4-3-carbonyl steroids such as hydrocortisone, dinorcitol and the like to generate corresponding 5beta-dihydrosteroids. According to the invention, the technical bottlenecks of poor heterologous expression and low catalytic efficiency of plant-derived progesterone 5beta-reductase are solved, and a potential biocatalyst is provided for green manufacturing of 5beta-dihydrosteroid drugs.
Owner:SHENYANG PHARMA UNIV

Pharmaceutical composition and application thereof

The invention discloses a pharmaceutical composition and application thereof. The invention specifically discloses a pharmaceutical composition containing progesterone, grease, phospholipid and a solvent. The pharmaceutical composition has one or more of the following advantages: good safety, high drug loading capacity, convenience in administration, slow release performance, good stability and suitability for industrial production.
Owner:WUHAN HUMANWELL INNOVATIVE DRUG RES & DEV CENT LTD CO +2

Progesterone vaginal sustained-release gel and preparation method thereof

The invention relates to the technical field of pharmaceutical preparations, in particular to progesterone vaginal sustained-release gel and a preparation method thereof, and the preparation method comprises the following steps: S100, raw material pretreatment; s200, preparing a hydrogel; s300, preparing an oil phase system; and S400, gel forming is carried out. Through accurate preparation steps and strict quality control, it is ensured that a uniform porous network structure is presented in the gel and progesterone nanocrystals are uniformly distributed in the gel, so that slow and continuous release of the medicine is achieved, in addition, the adhesion performance of the gel is optimized, the gel can be retained in the vagina for a long time, and the effect that the progesterone nanocrystals are uniformly distributed in the gel is achieved. The local action effect of the medicine is further enhanced, the curative effect of the medicine is improved, the administration frequency is reduced, and greater convenience and comfort are brought to patients.
Owner:JIANGSU VANGUARD PHARM CO LTD

Concentration system for progesterone raw material production

The invention provides a concentration system for progesterone raw material production. The concentration system comprises a concentration tank, the upper end of the concentration tank is communicated with a feeding pipe and a primary exhaust pipe, the concentration tank is sleeved with a heating cavity, the lower end of the concentration tank is communicated with a liquid discharge pipe, and an electromagnetic valve is arranged on the liquid discharge pipe; the device further comprises a second-stage concentration shell, a horizontally-arranged concentration roller is rotationally connected into the second-stage concentration shell, a rotating motor used for driving the concentration roller to rotate is installed outside the second-stage concentration shell, a strip-shaped liquid dipping groove is formed in the position, on one side of the upper portion of the concentration roller, in the second-stage concentration shell, and the lower end of a liquid discharging pipe extends into the second-stage concentration shell. A material storage tank is arranged below the concentration roller in the second-stage concentration shell, a scraping strip matched with the concentration roller is arranged below the strip-shaped liquid dipping tank in the second-stage concentration shell, and the upper end of the second-stage concentration shell is communicated with a second-stage exhaust pipe. Through the design of the concentration roller, the surface area of a solution can be increased during concentration, so that a solvent is evaporated more quickly, and the concentration efficiency is effectively improved.
Owner:HUBEI GONGTONG BIOLOGICAL SCI & TECH

Female-breeding protoplasm composition based on seed circulation method as well as preparation method and application of female-breeding protoplasm composition

The invention discloses a female-breeding primary pulp composition based on a seed circulation method and a preparation method and application thereof, and relates to the technical field of functional foods.The female-breeding primary pulp composition is prepared from, by weight, 15%-25% of organic flaxseeds, 15%-25% of organic black beans, 10%-20% of figs, 10%-20% of soybeans, 5%-15% of the root of kudzu vine, 5%-15% of pumpkin seeds and 2%-8% of lycium ruthenicum. The invention also provides a preparation method of the female-nourishing protoplasm composition and application of the female-nourishing protoplasm composition in functional food for regulating the balance of female estrogen and progestational hormone. According to the female-nourishing puree composition based on the seed circulation method, various medicinal and edible raw materials are selected and scientifically compounded, a special processing technology is adopted for wall breaking and effect releasing, and the ready-to-drink puree which can be drunk fixedly every day so as to realize synchronous balance adjustment of estrogen and progesterone is prepared; the pain points of high cycle dependence, low absorption rate and inconvenience in use of the traditional method are fundamentally solved.
Owner:GUANGXI HONGCHUANG PLANET HEALTH MANAGEMENT CO LTD

A method for preparing a progesterone vaginal gel

The application discloses a preparation method of a progesterone vaginal gel, relates to the technical field of gynecological medicine preparation, and realizes the preparation method of the progesterone vaginal gel by using a preparation device of the progesterone vaginal gel. The preparation device of the progesterone vaginal gel comprises a mixing kettle, a top plate is fixedly arranged at the top of the mixing kettle, a driving scraping mechanism is arranged inside the mixing kettle and at the inner side of the top plate, an oil phase preparation mechanism is arranged outside the driving scraping mechanism, a water phase preparation mechanism is arranged at the bottom outside the oil phase preparation mechanism, a premix preparation mechanism is arranged at the top outside the oil phase preparation mechanism, and the top plate and the water phase preparation mechanism are jointly provided with a driving supporting mechanism. The application can effectively shorten the transfer time of the premix and the oil phase, thereby improving the preparation efficiency of the gel product, and the residual oil phase can be recycled, thereby avoiding the waste of the oil phase and guaranteeing the quality of the gel product.
Owner:JIAN CHANGJIANG PHARM CO LTD

A process for the preparation of alfaxalone

PendingCN122145539ASteroidsFermentationAlfaxaloneOrganic synthesis
The application belongs to the technical field of organic synthesis, and particularly relates to a preparation method of alpha soludex. The preparation method takes 11-ketoprogesterone as raw material, firstly acetylates the ketone group at the 3 position, then obtains 3beta-hydroxyl through a composite biological enzyme method, and finally obtains alpha soludex through hydrogenation and translocation reaction. The composite biological enzyme method is used to obtain 3beta-hydroxyl, has good specificity, mild reaction conditions, does not need special equipment, and has high conversion efficiency. The preparation method of the application is easy to purify the reaction products of each step, the total mass yield of the final alpha soludex product is greater than 85%, and the HPLC purity is greater than 99.5%. The preparation method of the application has low cost and is suitable for industrial large-scale production.
Owner:ZHEJIANG SHENZHOU PHARMA

Medical composition for treating premature delivery and preparation method thereof

The invention belongs to the field of pharmaceutical preparations, and provides a medical composition for treating premature delivery and a preparation method thereof. The progesterone nanocrystal (D50 is 250-350 nm) and poloxamer 407 / 188 thermosensitive gel-forming system composite design is adopted, hydroxypropyl methylcellulose or carbomer 974P and a functional adhesion polymer (carbomer-cysteine or carbomer-catechol) are matched, the pH is adjusted to 4.0-4.5 through a lactic acid / sodium lactate buffer system, and the progesterone nanocrystal / poloxamer composite gel-forming agent is prepared. The excellent performance that the sol-gel transition temperature is 30-34 DEG C, the elastic modulus is not smaller than 150 Pa at 37 DEG C, the modulus retention rate is not smaller than 60% after the emulsion is diluted by 5-10 times, the adhesion work is not smaller than 0.60 N.s, and the anti-flushing retention rate is not smaller than 70% after the emulsion is diluted by 5-10 times is achieved. The invention solves the problem of synergy of high-modulus gel strength, rapid self-repairing ability and anti-dilution and anti-flushing stability, realizes unification of long-acting drug release and excellent biological adhesion performance in vagina physiological fluid dilution and mechanical flushing environments, and has wide clinical application value.
Owner:NANJING COMTRUE MEDICAL TECH CO LTD

Cytochrome P450 cholesterol side chain lyase mutant, progesterone-producing recombinant saccharomyces cerevisiae and application thereof

The invention provides a cytochrome P450 cholesterol side chain lyase mutant, recombinant saccharomyces cerevisiae for producing progesterone and application of the recombinant saccharomyces cerevisiae. The cytochrome P450 cholesterol side chain lyase mutant is obtained through ESM-2 language model screening, and the catalytic efficiency can be remarkably improved. The efficient recombinant saccharomyces cerevisiae is obtained by constructing the recombinant saccharomyces cerevisiae, optimizing the copy number of key enzymes, introducing an electron transfer system and overexpressing the key enzymes, the yield of progesterone is remarkably increased, and the recombinant saccharomyces cerevisiae is suitable for industrial production of progesterone and has important application value.
Owner:TIANJIN INST OF IND BIOTECH CHINESE ACADEMY OF SCI

A method for synthesizing progesterone (2,2,4,6,6,17α,21,21,21-D9) by electrochemically promoted hydrogen-deuterium exchange

The invention relates to a method for synthesizing progesterone (2,2,4,6,6,17α,21,21,21-D9) by electrochemically promoted hydrogen-deuterium exchange. The method comprises the following steps: adding progesterone and an electrolyte (such as tetra-n-butylammonium tetrafluoroborate) into a reaction container, uniformly mixing with a reaction solvent, then adding deuterated methanol-D4 into the reaction container under protective atmosphere and stirring conditions, using a carbon material as an electrode, and reacting at a constant current for 5-20 hours; after the reaction is completed, vacuum-drying the reaction solvent, separating and purifying the progesterone (2,2,4,6,6,17α,21,21,21-D9) by silica gel column chromatography, and vacuum-drying an eluent to obtain a pure progesterone (2,2,4,6,6,17α,21,21,21-D9). The synthesis method of the present invention is mild, efficient, and simple to operate, and can achieve rapid and efficient synthesis of progesterone (2,2,4,6,6,17α,21,21,21-D9).
Owner:OIL CROPS RES INST CHINESE ACAD OF AGRI SCI

Preparation method of 17alpha-hydroxypregna-4-ene-3, 11, 20-triketone and intermediate compound prepared by preparation method of 17alpha-hydroxypregna-4-ene-3, 11, 20-triketone

The invention provides a preparation method of 17 alpha-hydroxypregna-4-ene-3, 11, 20-triketone and an intermediate compound prepared by the preparation method, and relates to the technical field of medicine synthesis. The target product disclosed by the invention is prepared by taking 11 alpha-hydroxy-4-androstenedione as a starting material and carrying out six-step reaction, namely oxidation, ethynylation, ketalation, sulfonylation, etherification and hydrolysis. The starting material 11 alpha-hydroxy-4-androstenedione of the process is prepared from 4-androstenedione through enzyme transfer, and compared with 11 alpha, 17 alpha-dihydroxyprogesterone prepared from 17 alpha-hydroxyprogesterone through enzyme transfer, the enzyme transfer technology of the former is more mature, the conversion rate and the yield are higher, and the cost is lower. Meanwhile, the preparation method disclosed by the invention is easy to operate and implement in production and high in reaction conversion rate, avoids the use of a highly toxic reagent acetone cyanohydrin, and is more beneficial to large-scale industrial production.
Owner:HUBEI GONGTONG STEROID DRUG RESEARCH INSTITUTE CO LTD

A safe post-treatment process for 11alpha, 17alpha-dihydroxyprogesterone fermentation broth

This invention belongs to the technical field of steroid compound preparation, specifically relating to a safe post-processing technology for 11α,17α-dihydroxyprogesterone fermentation broth, comprising four processing steps: 1) extraction; 2) saponification; 3) secondary dissolution for impurity removal; and 4) decolorization. This invention employs a four-step post-processing procedure of extraction-saponification-secondary dissolution for impurity removal-decolorization, which not only improves the yield and purity of 11α,17α-dihydroxyprogesterone, achieving a purity of over 99%, but also solves the problem of high-yield extraction of 11α,17α-dihydroxyprogesterone from fermentation broth. Furthermore, it makes the reaction conditions milder, the operation simpler, safer, and more reliable, making it more suitable for large-scale production.
Owner:佳尔科生物科技南通有限公司

Progesterone enteric-coated tablet processing technology

The invention discloses a progesterone enteric-coated tablet processing technology. The technology comprises the following steps: 1, preparing a tablet core; 2, coating an isolating layer; 3, coating an enteric-coated layer; and 4, coloring layer coating. According to the processing technology of the progesterone enteric-coated tablet, the overall technological steps, technological parameters in all the technological steps and the raw material formula are optimized, the steps are simple, operation is easy, the quality of all layers of coatings can be effectively controlled, the stability and consistency of the final product are ensured, the prepared progesterone enteric-coated tablet can stably release medicine in the intestinal tract, and the bioavailability of the product is improved. The absorption speed is high, and the medication comfort and compliance of a patient are improved, so that the requirements of clinical treatment are better met.
Owner:ZHEJIANG SHENGBOKANG PHARMA CO LTD

Chemical synthesis method of 20 alpha-hydroxyprogesterone

The invention provides a chemical synthesis method of 20 alpha-hydroxyprogesterone, and belongs to the technical field of organic synthesis. The invention provides a simple and efficient synthesis path, and high-purity 20 alpha-hydroxyprogesterone can be obtained with good yield and extremely high stereoselectivity and specificity. The method is easy and convenient to operate and good in reproducibility, and effectively overcomes the defects that a product is an isomer mixture, separation and purification are difficult, and the target product yield is low in a traditional method. The successful implementation of the invention provides a stable and reliable material source for obtaining sufficient high-purity 20 alpha-hydroxyprogesterone, powerfully supports the subsequent activity research, dosage form development and new drug creation of the compound, and has important significance in the field of health drugs for women, health protection and health protection. The compound shows important application value and potential in the field of research and development of novel progesterone drugs.
Owner:XINJIANG MEDICAL UNIV

Preparation method of didrogesterone

The invention relates to a synthetic method of didrogesterone. According to the method, progesterone is subjected to ketalation, halogenation, elimination, illumination isomerization, deprotection and final isomerization, and the didrogesterone is obtained. The method has the advantages of high yield, cheap and easily available raw materials, green and safe whole process route, high bulk drug quality and purity of 99.8% or more, and is suitable for industrial production.
Owner:HANGZHOU XINXI TECH CO LTD

Temperature-sensitive hydroxybutyl polyvinyl alcohol, slow-release hydrogel, preparation method and application

The invention discloses temperature-sensitive hydroxybutyl polyvinyl alcohol, sustained-release hydrogel and a preparation method and application thereof, and belongs to the field of pharmaceutical preparations. Temperature-sensitive hydroxybutyl polyvinyl alcohol is synthesized by grafting modified polyvinyl alcohol in an alkaline aqueous solution through epoxybutane, no organic solvent is used in the preparation process, and the preparation method is simple, economical and convenient. When the grafting substitution degree of the hydroxybutyl polyvinyl alcohol is 20%-60%, the hydroxybutyl polyvinyl alcohol is dissolved in deionized water or normal saline at a low temperature, progesterone microcrystals are added and uniformly stirred to obtain a drug-loaded gel precursor dispersion liquid, gel transformation is performed in a use environment at a gel transformation temperature or above, and the progesterone vaginal sustained-release hydrogel is formed. The gel is soluble in water at a low temperature, has good fluidity, can be conveniently filled into tissues, and forms gel at a body temperature, and has good tissue mucosa retention. As a progesterone vaginal sustained-release carrier material, the hydrogel disclosed by the invention is expected to be applied to development of products for preventing or treating gynecological diseases or assisting fertility.
Owner:WUHAN UNIV

Experimental rat hysteromyoma model feed as well as preparation method and application thereof

The invention relates to experimental rat hysteromyoma model feed. The experimental rat hysteromyoma model feed comprises 18-22 parts of casein, 0.25-0.4 part of L-cystine, 35-40 parts of corn starch, 8-12 parts of cane sugar, 10-14 parts of maltodextrin, 3-5 parts of cellulose, 5-10 parts of soybean oil, 1-2 parts of a mineral mixture, 1-2 parts of a vitamin mixture and 0.1-0.3 part of choline tartrate. The pharmaceutical composition further comprises the following components in parts by weight: 0.003 to 0.006 part of estradiol valerate and / or 0.05 to 0.2 part of progesterone. The composition can also comprise cyclodextrin, the cyclodextrin and estradiol valerate and / or progesterone are prepared into an inclusion compound, or the cyclodextrin is directly added into the feed, and the total mass ratio of the cyclodextrin to estradiol valerate and / or progesterone is 1: (2-4). The cyclodextrin is selected from at least one of beta-cyclodextrin, hydroxyethyl-beta-cyclodextrin, hydroxypropyl-beta-cyclodextrin and ethidene diamine-beta-cyclodextrin, and the cyclodextrin is at least one of beta-cyclodextrin, hydroxyethyl-beta-cyclodextrin, hydroxypropyl-beta-cyclodextrin and ethidene diamine-beta-cyclodextrin. After a rat is fed with the feed for a period of time, a rat hysteromyoma model can be successfully obtained, the modeling process is milder, the model is more stable, and research on diseases and drugs is facilitated.
Owner:XIETONG BIO-ENG (YANGZHOU) CO LTD

A process for the synthesis of pregnenolone

The application relates to the technical field of organic synthesis, and particularly discloses a synthesis process of high-purity pregnenolone, which comprises the following steps: S1, esterification reaction of progesterone and an acylation reagent to obtain product 1; S2, ketalization reaction of the product 1, diol and a dehydrating agent in the presence of a catalyst to obtain product 2; S3, reduction reaction of the product 2 and a reducing agent to obtain product 3; and hydrolysis reaction of the product 3 and an acidic compound to obtain pregnenolone. The synthesized pregnenolone has high purity and yield.
Owner:XIAN GAOYUAN BIOTECHNOLOGY CO LTD

A c11 alpha-hydroxylase mutant with improved catalytic activity, methods and uses thereof

ActiveCN117126820BNucleotideProgesterones
The application belongs to the technical field of genetic engineering and enzyme engineering, and discloses a C11 alpha-hydroxylase mutant D118V with improved catalytic activity, wherein the amino acid sequence is shown as SEQ ID NO. 4, and the corresponding nucleotide sequence is shown as SEQ ID NO. 5. The C11 alpha-hydroxylase from Aspergillus ochraceus is subjected to site-directed saturation mutation, and the C11 alpha-hydroxylase mutant D118V for improving the yield of 11 alpha, 17 alpha-dihydroxy progesterone is obtained by using a Saccharomyces cerevisiae expression platform. When the concentration of the substrate 17 alpha-hydroxy progesterone is 2 g / L, the concentration of 11 alpha, 17 alpha-dihydroxy progesterone after 36 h of conversion is 1.19 g / L, and the production intensity is 758.15 mg / (L·d), which is increased by 16.67% and 172.77% compared with the wild-type CYP68J5, thereby providing an application case and basic data support for the modification of steroid C11 alpha-hydroxylase.
Owner:TIANJIN UNIV OF SCI & TECH

Construction and application of c14 alpha hydroxylase cyp14 mutants

The application discloses a steroid C14 alpha hydroxylase CLCYP14 mutant, relates to the field of proteins, and applies a site-directed saturation mutation technology and a combination mutation strategy to screen and obtain CLCYP14 mutants I111L-M115K and I111L-V124W with high hydroxylation specificity. Compared with CLCYP14, the hydroxylation selectivity and conversion rate of I111L-M115K and I111L-V124W for steroid compounds progesterone, 21-hydroxyprogesterone, 5beta-hydroxyprogesterone, 1-dehydroprogesterone, 21-hydroxypregna-1,4-diene-3,20-dione and deoxycortisone are obviously improved.
Owner:SHANGHAI JIAOTONG UNIV

Progesterone sustained-release nanoparticles and preparation method thereof

The invention relates to the technical field of progesterone sustained-release nanoparticle production, in particular to a progesterone sustained-release nanoparticle which comprises progesterone and further comprises solid lipid and liquid lipid according to the formula ratio of 1: 1.4: 1.2: 0.8. A preparation method of the progesterone sustained-release nanoparticle comprises raw material preparation of progesterone, solid lipid and liquid lipid and melt emulsification. The prepared progesterone lipid nanoparticles have high drug entrapment efficiency which can reach 77.48% at most, and have obvious drug sustained and controlled release performance, although the particle size of the nanoparticles is increased along with the increase of the content of liquid lipid-oleic acid in the lipid nanoparticles, the drug entrapment efficiency is improved, the in-vitro release of the drug is accelerated, and the progesterone lipid nanoparticles have good application prospects. According to the progesterone nanostructure lipid carrier, the drug content in the preparation process of the nanoparticles is improved, the drug encapsulation efficiency of the prepared progesterone nanostructure lipid carrier is reduced, but the drug loading capacity of the nanoparticles can be improved, and when the dosage reaches 20%, the drug loading capacity of the nanoparticles can reach 11.57%.
Owner:JIANGSU ZHONGTIAN PHARMACEUTICAL CO LTD

Protein combination and application thereof in production of steroids

PendingCN119639694AOxidoreductasesIsomerasesProtein compositionPregnenolone
The invention discloses a protein composition and application thereof in production of steroids. The protein combination is composed of a DWF protein, a CYP protein and an HSD protein, the DWF protein is an MtDWF5 protein or an StDWF5 protein, the CYP protein is an MtCYP108 protein, an MtCYP150 protein, a CaCYP108-1 protein, a CaCYP108-2 protein, a CaCYP150 protein or a DpCYP108 protein, and the HSD protein is an MtHSD6 protein, a synMtHSD5 protein, a CaHSD5 protein, a PsHSD5 protein or an SlHSD5 protein. Experiments prove that the protein combination can be used for producing at least one of campesterol, cholesterol, pregnenolone and progesterone by taking 7-dehydrosterol as a substrate. The method has important application value.
Owner:TIANJIN INST OF IND BIOTECH CHINESE ACADEMY OF SCI

Progesterone liposome and preparation method thereof

The invention relates to the technical field of biological pharmacy, and particularly discloses progesterone liposome and a preparation method thereof. The progesterone liposome is prepared from the following raw materials: an oil phase, a water phase A and a water phase B, the oil phase is prepared from the following raw materials in parts by weight: 330 to 340 parts of progesterone, 795 to 800 parts of cholesterol, 3480 to 3500 parts of phospholipid, 950 to 1050 parts of a solubilizer and 37200 to 37400 parts of an organic solvent; the water phase A is prepared from the following raw material components in parts by weight: 2370 to 2380 parts of cane sugar and 25000 parts of ultrapure water; the water phase B is prepared from the following raw material components in parts by weight: 18 to 20 parts of cane sugar, 2330 to 2350 parts of L-lysine and 200000 parts of ultrapure water. According to the progesterone liposome, the stability of the progesterone liposome is improved by matching the cholesterol, the phospholipid and the solubilizer and taking the cane sugar and the L-lysine as auxiliary materials.
Owner:CHANGZHOU WUHE BIOMEDICAL CO LTD

Plant-derived dehydrogenase and use thereof

This invention belongs to the field of biotechnology and discloses the application of plant-derived dehydrogenases or their encoding genes in the conversion of progesterone to 6-dehydroprogesterone. The plant-derived dehydrogenase is selected from the steroid 6-position dehydrogenase MtCYP79 derived from *Clematis chinensis* or the steroid 6-position dehydrogenase PsCYP79 derived from *Ligusticum striatum*. It also discloses a genetically engineered *Saccharomyces cerevisiae* strain that produces 6-dehydroprogesterone, which is based on a progesterone-producing *Saccharomyces cerevisiae* starting strain, into which the steroid 6-position dehydrogenase MtCYP79 or the steroid 6-position dehydrogenase PsCYP79 derived from *Ligusticum striatum* is introduced. The resulting genetically engineered *Saccharomyces cerevisiae* strain can produce both progesterone and 6-dehydroprogesterone.
Owner:TIANJIN INST OF IND BIOTECH CHINESE ACADEMY OF SCI

Application and use method of sheep estrus synchronization kit based on follicular wave induction and turnover

The invention relates to the field of efficient breeding of animals, in particular to a sheep estrus synchronization kit based on follicular wave induction and turnover, application and a use method. The kit contains estradiol benzoate, vitamin ADE, a GnRH analogue buserelin, a progesterone vaginal sustained-release agent, pregnant mare serum gonadotropin and a prostaglandin F2alpha analogue cloprostol sodium according to time nodes, and is matched with instructions for use. According to the method, follicle waves are induced or reset through estrogen and vitamin ADE on the 0th day, buserelin is injected on the 5th day, a progesterone sustained-release agent is placed, follicle development is synchronized, thrombus is removed on the 12th day, PMSG and cloprostenol sodium are jointly injected, follicle final maturation and ovulation are triggered, and estrus testing and mating are conducted 12-96 h after thrombus is removed. According to the scheme, high oestrus rate and highly concentrated oestrus time windows can be obtained for milk goats in different physiological states in the breeding season and the non-breeding season, regular artificial insemination can be conveniently implemented, and the breeding efficiency of a large-scale sheep farm is improved.
Owner:NORTHWEST A & F UNIV +1

Method for promoting porcine granular cell proliferation by circRNA (Ribonucleic Acid) from follicular fluid exosome and application

The invention relates to the technical field of livestock breeding biology, and discloses a method for promoting porcine ovary granular cell proliferation, which comprises the following steps: adding a porcine follicular fluid exosome into a porcine ovary granular cell culture system, and acting for a certain time at an effective concentration, so as to improve the proliferation activity of granular cells. After the exosome treatment, the apoptosis rate of granular cells can be reduced, the cell survival rate can be improved, and the granular cells can be promoted to secrete steroid hormones, including the estradiol level and the expression of progesterone synthetase. Cell experiments prove that the follicular fluid exosome can effectively improve the activity of granular cells, promote the process of a cell cycle, inhibit cell apoptosis and remarkably enhance the synthesis capacity of steroid hormones such as estradiol and progesterone, and a new intervention strategy is provided for improving follicular development and reproductive performance of sows.
Owner:ANHUI AGRICULTURAL UNIVERSITY

P450 enzyme, mutant and application of P450 enzyme in synthesis of 14 alpha-hydroxyprogesterone

The invention provides a P450 enzyme CYP5103-BM capable of catalyzing 14 alpha-hydroxylation of progesterone, and a mutant CYP5103-BM-Y291H of the P450 enzyme CYP5103-BM. Wherein the gene sequence of the P450 enzyme CYP5103-BM is as shown in SEQ ID NO: 1, and the gene sequence of the mutant CYP5103-BM-Y291H is as shown in SEQ ID NO: 3. The transformants respectively carrying the CYP5103-BM gene and the CYP5103-BM-Y291H gene can be subjected to a whole-cell biological catalytic reaction to convert a substrate progesterone into 14 alpha-hydroxyprogesterone, and the conversion rates in 36 hours respectively reach 50.04% and 88.76%. The mutant CYP5103-BM-Y291H has higher catalytic activity on progesterone, the production cost of 14 alpha-hydroxyprogesterone can be greatly reduced, the production time can be shortened, and the mutant CYP5103-BM-Y291H has extremely high application value for industrial production of progesterone and research of C14-hydroxylated steroid drugs.
Owner:TIANJIN UNIV OF SCI & TECH

Vagina sustained-release agent for sheep and preparation method thereof

The invention provides a sheep vagina sustained-release preparation and a preparation method thereof, and relates to the technical field of livestock breeding, the sheep vagina sustained-release preparation comprises a skeleton inner core and a silica gel drug-loaded epidermis wrapping the skeleton inner core; the silica gel drug-loaded skin comprises the following components: progesterone, medical silicone rubber, a vulcanizing agent, a pore-foaming agent, an expanding agent and a reinforcing filler. According to the vagina sustained-release agent for sheep provided by the invention, in the use process of the suppository, the medicine is released to a greater extent, the medicine residue is obviously reduced, and the volume of the suppository is expanded to a certain extent after the suppository is in contact with body fluid, so that the phenomenon of suppository falling in the use process can be effectively improved.
Owner:NINGBO SANSHENG BIOLOGICAL TECH CO LTD