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54 results about "Zebrafish embryo" patented technology

Composition with light damage resistance as well as application and cosmetics thereof

The invention belongs to the field of daily chemicals, and discloses a composition with light damage resistance, which comprises a ribonucleic acid solution, tetrahydromethylpyrimidine carboxylic acid and a spirulina maxima extract solution in a weight ratio of (60-80): (10-30): (1-10). The composition takes a ribonucleic acid solution, tetrahydromethylpyrimidinecarboxylic acid and a spirulina maxima extract solution as core components, can play a better anti-light damage effect, and samples are sent to a third-party detection mechanism for zebrafish embryo light damage cell apoptosis test. The test result shows that the effect of the composition is better than the cell apoptosis effect of ergothioneine with the same concentration, and evaluation of the skin moisture content increasing effect shows that the composition can well repair and supplement the skin barrier; meanwhile, the invention further discloses application of the composition and cosmetics.
Owner:SHANGHAI YOUREN BIOTECHNOLOGY CO LTD

Method for evaluating developmental toxicity of zebra fish by single or combined use of fluopyram and tebuconazole

The invention belongs to the technical field of toxicity tests, and discloses a method for evaluating zebra fish developmental toxicity by single or combined use of fluopyram and tebuconazole. The method is simple, efficient and accurate, through a combined toxicity test and a single pesticide test, reference data is conveniently increased according to the influence of different environments and different medicaments on animals, the influence of pesticides on zebra fish development is calculated according to the death rate and the median lethal concentration of zebra fish embryos, the data is reasonably analyzed and processed, and the method is suitable for popularization and application. The problems that related evaluation standards formulated by depending on a single effect are not accurate and cannot truly reflect the change of the real environment quality are avoided, the environmental risk of effectively evaluating the pollutants in the environmental water body is improved, and an environmental threshold value safer for aquatic organisms is formulated conveniently.
Owner:INST OF AGRO FOOD SCI & TECH CHINESE ACADEMY OF AGRI SCI

Method for constructing and analyzing zebra fish heart failure model

The invention belongs to the technical field of experimental animal models, and particularly relates to a construction and analysis method of a zebra fish heart failure model. The invention discloses a construction method of a zebra fish heart failure model. The construction method comprises the following steps: S1, pretreating a zebra fish embryo; and S2, putting the zebra fish embryos pretreated in the step S1 into an exposure solution for exposure, thereby completing the construction of the zebra fish heart failure model. According to the construction and analysis method of the zebra fish heart failure model, accurate induction and dynamic monitoring of heart failure phenotypes are achieved through a standardized drug treatment process and a multi-mode heart function evaluation system, and an efficient platform is provided for cardiovascular drug screening and toxicity evaluation. The construction and analysis method of the zebra fish heart failure model further extends to the field of medicine and functional food heart protection efficacy evaluation, and objective grading authentication of food and medicine efficacy is achieved.
Owner:SOUTH CHINA AGRICULTURAL UNIVERSITY +1

Application of thyroid hormone and its analogs in the preparation and treatment of α-thalassemia

The present invention provides the use of thyroid hormone and its analogs in the preparation of a drug for treating α-thalassemia. Specifically, the drug can be used to regulate ζ-globin gene expression. During K562 cell differentiation, the thyroid hormone analogs can specifically and significantly upregulate the expression of the ζ-globin gene (HBZ) by as much as 50 times. After treatment with thyroid hormone and its analogs in model animal zebrafish embryos, the expression of the ζ-globin gene (hbae5) can also be specifically upregulated by as much as 30-70 times. Therefore, the present invention uses thyroid hormone and its analogs to specifically activate the expression of the ζ-globin gene, that is, to reactivate the silenced ζ-globin gene in α-thalassemia patients to inhibit the destruction of red blood cells. This method provides a method for preparing a drug for treating α-thalassemia, provides an economical, safe and effective method for the treatment of α-thalassemia, and can be widely promoted and used.
Owner:SHANGHAI SPH RARE DISEASE PHARMA CO LTD

A method for constructing a zebrafish aging model and application thereof

PendingCN122445727ABiotechnologyEmbryo
The application belongs to the technical field of animal model construction, and relates to a construction method and application of a zebrafish aging model. The construction method comprises the following steps: 1, sgRNA, Cas9 protein and a homologous recombination knock-in plasmid containing fluorescent protein A and a knock-in gene are transferred into zebrafish embryos, development is cultured to sexual maturity, F0-I is obtained, and a knock-in strain I is obtained through screening; 2, sgRNA, Cas9 protein and a homologous recombination knock-in plasmid containing fluorescent protein B and a knock-in gene are transferred into zebrafish embryos, development is cultured to sexual maturity, F0-II is obtained, and a knock-in strain II is obtained through screening; 3, the knock-in strain I and the knock-in strain II are mated, zebrafish with fluorescent protein A and fluorescent protein B simultaneously expressed in the heart are screened from the offspring, and a wrn gene knockout homozygote, that is, a zebrafish aging model, is obtained. The construction method is more convenient to breed, significantly reduces breeding costs and the workload of screening and breeding, and has good application value.
Owner:NANJING XINJIA MEDICAL TECH CO LTD

Construction method of ribosomal disease zebra fish model

PendingCN121406716AHydrolasesMicroinjection basedBiotechnologyDisease phenotype
The invention belongs to the technical field of gene engineering, and particularly relates to a construction method of a ribosomal disease zebrafish model. The invention provides a construction method of a ribosomal disease zebrafish model, which comprises the following steps: directionally mutating a pno1 gene in a wild zebrafish embryo to obtain F0-generation zebrafish; mating the F0-generation zebrafish with wild type zebrafish, and screening out positive heterozygote F1-generation zebrafish from birth zebrafish as the ribosomal disease zebrafish model. The zebrafish mutant is constructed through the targeted ribosomal factor gene, multi-system phenotypes of hematopoietic system defects, skeletal insufficiency and digestive system dysplasia can be reproduced at the same time, the problem that in the prior art, disease phenotypes are incomplete is solved, and the zebrafish mutant can be widely applied to pathogenesis research and drug screening of ribosomal diseases and has a wide application prospect. An important platform is provided for developing a novel treatment means.
Owner:AFFILIATED HOSPITAL OF GUANGDONG MEDICAL UNIV

Preparation method and application of astaxanthin oil with high anti-inflammatory activity

The present invention relates to the field of astaxanthin oil, specifically to a method for preparing astaxanthin oil with high anti-inflammatory activity and its application. The present invention cultivates Haematococcus pluvialis H7 and Haematococcus pluvialis ENN71 in a racetrack photobioreactor and a pipeline photobioreactor to accumulate astaxanthin and prepare astaxanthin oil. Under the same concentration and conditions, the combined culture significantly enhances the anti-inflammatory activity of astaxanthin oil compared to astaxanthin oil prepared by culturing Haematococcus pluvialis H7 or Haematococcus pluvialis ENN71 alone, increasing the zebrafish embryo neutrophil aggregation inhibition rate by 76.2% and 115.2%, respectively. The present application optimizes the ratio of the combined culture of Haematococcus pluvialis H7 and Haematococcus pluvialis ENN71. When the mass ratio of Haematococcus pluvialis H7 to Haematococcus pluvialis ENN71 is 1:2, the astaxanthin oil prepared by the combined culture has the highest anti-inflammatory activity, with a zebrafish embryo neutrophil aggregation inhibition rate of 77.1±0.36%.
Owner:YUNNAN AIERKANG BIOTECH

A method for constructing and applying a zebrafish model of arrhythmia with atrial enlargement and intercalated disc structural abnormalities.

This invention belongs to the field of animal model construction technology, specifically relating to a method and application for constructing a zebrafish model of arrhythmia with atrial enlargement and abnormal intercalated disc structure. This model is cyth3a. e6 / e6 A mutant zebrafish model was developed by designing an sgRNA targeting exon 6 of the zebrafish cyth3a gene. The cyth3a gene in wild-type zebrafish embryos was mutated using a mixture of sgRNA and Cas9 protein. The resulting F0 generation zebrafish were crossed with wild-type zebrafish, and heterozygotes in the F1 generation were selected. These heterozygotes were then inbred, and positive homozygotes in the F2 generation were selected, thus forming the zebrafish model. This is the first time that a cyth3a gene-specific knockout model has been constructed. e6 / e6 The mutant zebrafish model is simple, efficient, and has a high success rate; it can be used to evaluate or screen drugs for the treatment of arrhythmic cardiomyopathy.
Owner:QINGDAO UNIV

Rapid Method for Comprehensive Toxicity Measurement of Sewage

This provides a rapid method for comprehensively measuring the toxicity of sewage. [Solution] The invention includes the steps of: (S1) measuring zebrafish embryo toxicity indices using water samples in the full process of a sewage treatment plant, including traditional toxicity indices and behavioral toxicity indices, and performing data preprocessing; (S2) establishing a comprehensive sewage toxicity prediction model based on different target variables, with traditional toxicity indices as target variables and behavioral toxicity indices as feature variables; and (S3) inputting zebrafish embryo behavioral toxicity indices data from water samples for measurement as input data into the prediction model, selecting a corresponding prediction model according to the prediction results of the target variables, and obtaining the comprehensive toxicity of the sewage samples for measurement. The present invention is suitable for rapid measurement of comprehensive toxicity in large quantities of actual sewage samples because it can obtain standardized comprehensive toxicity indices for actual sewage samples while maintaining the advantages of speed, ease of operation, and low cost.
Owner:NANJING UNIV

Application of transgenic zebrafish in preparation of animal model capable of visually monitoring mast cells

The invention discloses application of transgenic zebrafish in preparation of an animal model capable of visually monitoring mast cells. The transgenic zebrafish is prepared by the following method: respectively carrying out XhoI and BamHI double enzyme digestion on a cpa5 gene promoter sequence (SEQ ID NO: 1) and plasmids with fluorescent protein genes and Tol2 transposon recognition sites, and then connecting to obtain recombinant plasmids; and then introducing the recombinant plasmid and Tol2 transposase mRNA into a zebra fish embryo in a microinjection mode in a 1-cell period of zebra fish embryo development, and culturing at constant temperature to obtain the transgenic zebra fish. The cpa5 promoter is constructed to drive an expression framework of the fluorescent protein, so that the mast cells naturally emit fluorescence in the zebra fish body, and an effective animal model is provided for mechanism research and drug screening of mast cell related diseases.
Owner:SOUTH CHINA UNIV OF TECH

Probe eZinCh-2 modified plasmid based on FRET (Fluorescence Resonance Energy Transfer) and application of probe eZinCh-2 modified plasmid in zinc ion detection

PendingCN121950921AReal-time in-body observationreveal spaceStable introduction of DNAFluorescence/phosphorescenceEmbryoIn vivo
The invention belongs to the technical field of bioengineering and analytical chemistry, and provides a probe eZinCh-2 modified plasmid based on FRET (Fluorescence Resonance Energy Transfer) and application of the probe eZinCh-2 modified plasmid in zinc ion detection. According to the invention, the plasmid is constructed through molecular cloning and homologous recombination technologies, and is microinjected into a zebrafish embryo, so that a transgenic strain capable of stably inheriting and expressing the probe protein is successfully obtained; as a living body biological tool, the zebrafish of the strain is combined with a confocal microscope spectrum FRET technology, and real-time and quantitative monitoring and visual imaging of dynamic changes of zinc ions at living body, cell and tissue levels are achieved. The method solves the problem that real-time dynamic visual monitoring of the zinc ions cannot be realized in a living body model in the prior art, and is suitable for real-time microscopic quantitative analysis of the content of the zinc ions in model organisms such as zebra fish and the like.
Owner:ZHEJIANG UNIV

Construction method and application of adriamycin-induced zebrafish osteoporosis-like model

The invention discloses a construction method and application of an adriamycin-induced zebrafish osteoporosis-like model, and the construction method comprises the following steps: by utilizing the characteristics of transparency and rapid bone development of zebrafish embryos and juvenile fishes, selecting the zebrafish embryos of 2dpf, and culturing the zebrafish embryos to 6dpf in an adriamycin aqueous solution of 20 mu m, so as to obtain the adriamycin-induced zebrafish osteoporosis-like model. Therefore, the visual zebrafish osteoporosis-like model is efficiently constructed, juvenile fish bodies are transparent, imaging is visual, bone development changes can be observed in vivo in real time, and visual evaluation of bone development injuries is achieved. The built zebrafish osteoporosis-like model clearly shows the systematic inhibition effect of chemotherapy drugs on bone formation and mineralization, has the advantages of being short in building period, easy and convenient to operate, high in repeatability and sensitive to drug reaction, can be used for rapid dose screening and intervention experiments, and has good application prospects. The method has great application potential in research of pathogenesis of CIOP, screening of anti-osteoporosis drugs and evaluation of curative effect of the anti-osteoporosis drugs.
Owner:XUZHOU CENT HOSPITAL

A polysaccharide extraction and purification method derived from traditional chinese medicine cat ginseng and application thereof

PendingCN122302111AFreeze-dryingEngineering
This invention discloses a method for extracting and preparing polysaccharides from the traditional Chinese medicine *Cat Ginseng* and its applications. The process involves drying and pulverizing the raw material, defatting it with 95% ethanol, and then using ultrasound-assisted extraction. The liquid-to-solid ratio, extraction time, and ultrasonic power are optimized using response surface methodology. The extract is then centrifuged, concentrated, precipitated with alcohol, deproteinized and decolorized using macroporous resin, dialyzed, and freeze-dried to obtain crude polysaccharides. These crude polysaccharides are then purified by DEAE-52 and Sephadex G-150 column chromatography to obtain three homogeneous new polysaccharide fractions: AvPs1-1, AvPs2-1, and AvPs2-2. The polysaccharide extract, dominated by AvPs2-1 and AvPs2-2, not only exhibits protective effects on zebrafish embryonic development but also demonstrates significant anti-fibrotic activity in a liver injury model. Due to its natural non-toxicity, water solubility, and multiple functions including embryonic development protection and anti-fibrosis, this polysaccharide shows broad application prospects in functional foods, health products, and therapeutic drugs.
Owner:ZUNYI MEDICAL UNIVERSITY

Method for synthesizing ascorbyl glucoside by transforming yeast lysate and use thereof

PendingCN122303062AVitamin CNucleotide
This invention relates to a method for synthesizing ascorbate glucoside via yeast lysate and its application, belonging to the field of cosmetic technology. The invention discloses a Bifida ferment lysate, which is a fermentation product lysate of *Bifidobacterium longum*, wherein the *Bifidobacterium longum* is at least one of *Bifidobacterium longum* HJ-005, *Bifidobacterium longum* subsp. *CGMCC* 1.2186, and *Bifidobacterium longum* subsp. *infant* CGMCC 1.15639; the nucleotide sequence of the 16S rRNA of *Bifidobacterium longum* HJ-005 is shown in SEQ ID NO: 1. This invention uses a specific fermentation product lysate of *Bifidobacterium longum* to catalyze the transglycosylation reaction of vitamin C, obtaining a reaction product containing AA2G, thereby increasing the yield of AA2G, significantly reducing the preparation cost of AA2G, and significantly inhibiting the production of melanin in zebrafish embryos, exhibiting a whitening effect. It can be used as a cosmetic raw material without purification.
Owner:广州华酵生物科技有限公司

A model organism for tubulinopathy causing cortical developmental malformation

The invention relates to the modelling of a disorder called tubulinopathy, which refers to a wide range of cortical developmental malformations (CDM) resulting from defects in genes encoding tubulin proteins that regulate neuronal migration during brain development, by knocking out the tubulin gamma 1 (Tubg1) gene in zebrafish (Danio rerio) embryos using CRISPR / Cas9 technology. The transgenic animal in question allows the investigation of the phenotype and molecular pathological mechanisms of CDMs resulting from the deficiency of the Tubg1 protein during the developmental process. In the invention, the region located in the third exon of the Tubg1 gene in zebrafish is targeted and knocked out with a guide RNA having the nucleotide sequence SEQ ID NO: 1.
Owner:IZMIR BIYOTIP & GENOM MERKEZI +1

Refining wastewater biotoxicity detection method based on dual levels of zebra fish embryos

The invention discloses a method for detecting biotoxicity of refinery wastewater based on dual levels of zebra fish embryos. The method comprises the following steps: S1, analyzing a death rate; s2, oxidative stress level analysis: respectively determining the ROS content and the SOD content of the zebrafish embryos by adopting an ROS kit and an SOD kit so as to determine the oxidative stress level of the zebrafish embryos; and S3, carrying out gene transcriptomics analysis. The invention provides a detection method for comprehensively and effectively determining the biotoxicity of the refinery wastewater by taking omics analysis as a technical means and combining determination of death rate of zebra fish embryos, morphological deformity occurrence condition and oxidative stress level, and a most scientific and reasonable detection result is finally obtained layer by layer progressively. The experimental process has the characteristics of short time period, intuitive and comprehensive experimental result and the like, and can truly reflect the biotoxicity of the refinery wastewater.
Owner:CHINA NAT OFFSHORE OIL CORP +3

Method and system for analyzing melanin content based on migration control

The application discloses a kind of based on the analysis method and system of melanin content of migration control, and the present application relates to the technical field of quantitative analysis method, and along the illumination parameter is photographed to zebra embryo, and multiple images of different angles of zebra embryo are collected;According to multiple images, corresponding stereoscopic data are determined, and time series three-dimensional model is generated according to the alignment of the stereoscopic data and time point data, to ensure the accuracy of time series three-dimensional model.Therefore, melanin area is determined based on the identification of time series three-dimensional model, and melanin three-dimensional volume is determined according to the area position of melanin area and the voxel statistics of melanin area;The migration path of melanin area is collected, and the quantitative analysis of melanin content is triggered according to the migration path of melanin area, the migration speed of melanin area and melanin three-dimensional volume, to ensure the accuracy of quantitative analysis of melanin content.
Owner:GUANGZHOU ZHONGKE INSPECTION TECH TESTING CO LTD +1

Application of zineb in the preparation of ERK inhibitors

ActiveCN120860058BProve suppression accuracylow costMAPK/ERK pathwayT cell
This invention belongs to the field of biomedical technology, specifically disclosing the application of mancozeb in the preparation of ERK inhibitors. Through zebrafish embryo models and HEK293T cell experiments, this invention demonstrates that mancozeb can specifically inhibit the MAPK / ERK pathway as an ERK inhibitor, and that at concentrations of 2μM to 8μM, it can induce a three-dimensional spiral notochord malformation in zebrafish embryos similar to that caused by 100μM U0126 treatment, providing a new approach for the preparation of MAPK / ERK pathway inhibitors.
Owner:JINGGANGSHAN UNIVERSITY

Immunofluorescence method and kit for detecting zebra fish heart DNA methylation level

The invention relates to an immunofluorescence method and kit for detecting zebra fish heart DNA methylation level, and belongs to the technical field of biological detection. The immunofluorescence method provided by the invention comprises the following steps: exposing a zebrafish embryo to a substance to be detected, dissecting a heart sample of the zebrafish embryo and carrying out fixation, membrane permeation, protease K digestion, hydrochloric acid DNA denaturation and neutralization treatment, and then carrying out sealing, incubation of a 5-methylcytosine primary antibody and a fluorescently labeled secondary antibody, cell nucleus staining and fluorescence detection. And finally, analyzing and evaluating the DNA methylation level through fluorescence imaging. According to the method disclosed by the invention, through a combined step of protease K and hydrochloric acid denaturation treatment, the binding efficiency to the antibody is remarkably improved, so that high-sensitivity and low-background detection on the methylation level of the whole DNA in a zebra fish micro heart sample is realized; the detection kit provided by the invention can be widely applied to epigenetics evaluation of toxicity of environmental pollutants.
Owner:SUZHOU UNIV

Application of 2-methyl-4 (3H)-quinazolinone in preparation of anti-angiogenesis drugs

The invention relates to an application of 2-methyl-4 (3H)-quinazolinone in preparation of an anti-angiogenesis medicine. The invention discloses the application of the 2-methyl-4 (3H)-quinazolinone compound as an angiogenesis inhibitor in anti-angiogenesis drugs for the first time, and the 2-methyl-4 (3H)-quinazolinone compound has a remarkable inhibition effect on internode blood vessels and dorsal longitudinal anastomosis angiogenesis of a Tg (flk: mCherry) fluorescent transgenic zebrafish strain. Meanwhile, the growth of the zebrafish embryos of the strain is not obviously influenced, and the toxicity is extremely low. The compound not only can be extracted from streptomyces, but also can be obtained through an artificial synthesis process, has a reliable and stable source, and has a good application prospect in the field of anti-angiogenesis drugs.
Owner:SHANTOU UNIV

Tissue protein and nucleic acid extraction sleeve for zebrafish embryos and juvenile fishes

The utility model discloses a zebrafish embryo and juvenile tissue protein and nucleic acid extraction sleeve which comprises an outer sleeve and an inner sleeve, the inner sleeve is installed on the top of the outer sleeve through a neck tube, and the neck tube comprises a short neck tube and a long neck tube. The inner sleeve is sequentially matched with the short neck pipe and the long neck pipe to be installed in the outer sleeve, the whole of the inner sleeve, the short neck pipe and the outer sleeve is used in cooperation with a centrifugal machine, fish culture water / fry culture liquid is removed, and zebrafish embryos / juvenile fishes without water are obtained at the bottom of the inner sleeve; then the whole body of the inner sleeve, the long-neck tube and the outer sleeve is matched with an automatic grinding instrument for use, so that the zebrafish embryos / juvenile fishes in the inner sleeve extend into the nucleic acid / protein extraction solution and are fully ground and extracted; the whole of the inner sleeve, the short-neck tube and the outer sleeve is used in cooperation with a centrifugal machine, the broken zebrafish embryo / juvenile fish tissue in the inner sleeve is converged to the inner bottom of the outer sleeve, a nucleic acid / protein mixed solution is obtained, the outer sleeve is centrifuged, and supernatant is taken, so that the nucleic acid / protein solution can be obtained.
Owner:襄阳市第一人民医院

Construction method and application of zebra fish ADHD model

The invention discloses an application of polystyrene micro-plastic in construction of a zebra fish ADHD model. The invention further discloses a construction method of the zebra fish ADHD model. The invention also discloses an application of the construction method of the zebrafish ADHD model in screening ADHD drugs. According to the method, the polystyrene microplastic is directly associated with the ADHD phenotype for the first time, and the phenotype can be quantified, specifically, the integration behavior is directly associated with neurons and gene three-level indexes (such as TH + cell number). High-throughput screening can be achieved through zebra fish embryo microwell plate culture, and the zebra fish ADHD model is obtained by achieving collaborative simulation of multi-action and impulse phenotypes through a specific particle size-concentration combination for the first time. According to the method, model construction can be completed within 5 days; the cost is low, and the cost of the kit is low; each time is 50 yuan; according to the invention, RNA-seq is adopted to identify that a GPCR channel is a key target spot (logFCgt, 2, plt, 0.001).
Owner:NANTONG UNIV

Application of zineb in preparation of ERK inhibitor

ActiveCN120860058ANervous disorderInorganic active ingredientsMAPK/ERK pathwayT cell
The invention belongs to the technical field of biological medicine, and particularly discloses application of zineb in preparation of an ERK inhibitor. A zebra fish embryo model and an HEK293T cell experiment prove that zineb can be used as an ERK inhibitor for specifically inhibiting an MAPK / ERK pathway, and can cause zebra fish embryo spinal cord three-dimensional spiral deformity similar to that treated by 100 [mu] M U0126 at the concentration of 2 [mu] M to 8 [mu] M, and a new way is provided for preparing the MAPK / ERK pathway inhibitor.
Owner:JINGGANGSHAN UNIVERSITY

Construction method and application of multi-organ development injury animal model based on non-coding long-chain RNA

The invention discloses a construction method and application of a multi-organ development injury animal model based on non-coding long-chain RNA (Ribonucleic Acid). According to the present invention, it is found that the expression level of LncRNA URS0000A7E830 is significantly increased compared to the normal control group in the embryonic period amoxicillin exposed zebra fish model, and the URS0000A7E830 siRNA microinjection intervention is performed on the fertilized one-cell period zebra fish embryo based on the embryonic period amoxicillin exposed zebra fish model so as to effectively improve the multi-organ differentiation damage. The model established by the invention is novel, reliable, simple and convenient, and has important significance for illuminating the occurrence mechanism of the development injury of multiple organs and determining clinical early warning and intervention targets.
Owner:WUHAN UNIV

Construction method and application of igz gene knockout zebrafish mucosal immune antibody deletion model

The application discloses a kind of IgZ gene knockout zebrafish mucosal immunity antibody deletion model construction method and application, belong to genetic engineering technical field.The model construction method includes the following steps: S1, with the nucleotide sequence as shown in SEQ ID NO:1 as target point, using gene editing system to carry out IgZ gene knockout to zebrafish embryo, obtain IgZ gene knockout F0 generation mutant zebrafish;S2, F0 generation mutant zebrafish is self-crossed with the mutant zebrafish of target type same, sequencing obtains IgZ gene mutation F1 generation homozygote mutant zebrafish, it is IgZ gene knockout zebrafish mucosal immunity antibody deletion model.The zebrafish mucosal immunoglobulin synthesis disorder model is first constructed in the present application, and the model has good application value in the rapid screening and evaluation of drugs and natural efficacy factors with mucosal inflammation.
Owner:HUAZHONG AGRI UNIV

Zebrafish animal model for inflammatory diseases and method for screeing Anti-inflammatory agents using same

The present invention relates to zebrafish embryo and adult models constructed by inducing inflammation with carboxymethyllysine (CML), which causes glycation toxicity, and a method for screening anti-inflammatory agents using the same. The present invention provides a method for screening a novel anti-inflammatory agent using zebrafish in which embryonic death, acute cytokine storm, and neuro-paralysis has been induced, whereby inflammatory diseases can be prevented or treated in a more convenient and cost-effective manner.
Owner:RAYDEL KOREA CO LTD

Spatial resolution lipidomics method based on zebra fish

The invention discloses a zebra fish-based spatial resolution lipidomics method, and belongs to the technical field of biological medicines. The zebrafish-based spatial resolution lipidomics method provided by the invention comprises the following steps: separating a zebrafish trunk from yolk; sample pretreatment and chromatography-mass spectrometry detection. According to the method, yolk is sucked by a pipettor, trunks are cleaned in batches by a vortex instrument, after the trunks and the yolk are pretreated, a sample is subjected to lipidomics detection by an ultra-high performance liquid chromatography tandem quadrupole electrostatic field orbitrap high-resolution mass spectrometer, and further data analysis is performed. According to the method, the trunk and yolk samples which can be used for high-quality and high-coverage lipidomics analysis are obtained while high sample flux is maintained for the first time, and regionalized analysis of zebrafish embryo / larva lipid metabolism is realized. The method has the advantages of simple sample mechanism, low lipid signal interference, high sensitivity and the like, and can detect inrecognizable subtle changes and key lipid molecules in the whole sample.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)

Method for creating fluorescent zebra fish based on enhancer of muscle specific gene

The invention discloses a method for creating fluorescent zebra fish based on an enhancer of a muscle specific gene. The invention provides a method for creating fluorescent zebrafish, which comprises the following steps: by taking an upstream promoter and an enhancer of a fmyhc2.2 gene as target sequences, amplifying the upstream promoter and the enhancer and seamlessly connecting the upstream promoter and the enhancer with a fluorescent protein carrier to form a recombinant plasmid, carrying out microinjection on a zebrafish embryo, selecting F0 generation individuals capable of driving fluorescent protein expression, and culturing until sexual maturity, thereby obtaining the fluorescent zebrafish. Selecting male and female individuals for selfing to obtain F1 generation, observing and selecting individuals with strong fluorescence from F1 generation embryos through a fluorescence microscope, and culturing the individuals with strong fluorescence to sexual maturity to obtain the transgenic zebrafish with remarkably discolored skin. The fluorescent zebra fish is created by utilizing the enhancer of the muscle specific gene, an innovative method is provided for creating a zebra fish ornamental strain, a support is provided for researching a regulation mechanism of zebra fish muscle related genes, and the fluorescent zebra fish has important scientific value and industrial application value.
Owner:SOUTH CHINA AGRICULTURAL UNIVERSITY +1

Robot cell microinjection operation method based on dynamic equilibrium game mechanism reinforcement learning

The application discloses a robot cell microinjection operation method based on dynamic balance game mechanism reinforcement learning. The method comprises the following steps: training an injection operation decision model using a total loss function; the total loss function comprises a loss of a PPO reinforcement learning network, an entropy regularization term and a state prediction loss of a state prediction network; during the robot cell microinjection operation process, injection environment images are collected in real time, input into an instance segmentation network model, and environment mask images are obtained; the injection needle tip real-time coordinates and cell mask images are obtained according to the environment mask images; a feature extraction network receives the cell mask images, a PPO reinforcement learning network receives the feature extraction results and the injection needle tip real-time coordinates, and the expected position of the injection needle tip is obtained as feedback information to control the robot. The application can perform safe and high-precision zebrafish embryo cell microinjection operation in a real scene, and provides technical support for the fields of gene editing and cell breeding.
Owner:ZHEJIANG UNIV

Method for rapidly and accurately detecting environmental pollutant-induced ferroptosis and application thereof

PendingCN122357678AEnvironmental toxicologyOxidative stress
This invention belongs to the field of environmental toxicology and molecular detection technology, and provides a rapid and accurate method for detecting ferroptosis induced by environmental pollutants and its applications. This method utilizes early zebrafish embryos as a model organism and combines morphological, biochemical, and molecular biological indicators to establish a standardized ferroptosis detection system for identifying and quantitatively evaluating pesticide exposure-induced ferroptosis. This method features a short detection cycle (completed within 96 hours), high sensitivity, and strong specificity, effectively distinguishing between general oxidative stress and iron-dependent cell death, providing a novel detection tool for pesticide environmental toxicology research and ecological risk assessment.
Owner:HAINAN UNIV