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125 results about "Immunofluorescence staining" patented technology

Application of dihydroflavonoid compound naringin in promoting proliferation and differentiation of porcine muscle stem cells

The invention provides an application of dihydroflavonoid compound naringin in promoting proliferation and differentiation of porcine muscle stem cells to form myotubes, which is characterized in that the naringin is added into a DMEM / F12 culture medium containing 15% of fetal calf serum and 1% of double antibodies and a DMEM differential culture medium containing 2% of horse serum and 1% of double antibodies until the final concentration is 70 mu M, and the porcine muscle stem cells are respectively treated in proliferation and differentiation stages, hoechst 33342 staining and immunofluorescence staining methods are used for respectively judging the number of cells in the proliferation stage and the fluorescence area, fluorescence intensity and nuclear fusion rate of Myosin in myotubes formed in the differentiation stage. The relative proliferation multiple of the muscle stem cells treated by adding naringin and the fluorescence area, the fluorescence intensity and the nuclear fusion rate of Myosin in myotubes are obviously higher than those of a blank control group. By adopting the method, proliferation and differentiation of the porcine muscle stem cells can be promoted, and a new thought is provided for maintaining cell dryness and large-scale production of cultured meat.
Owner:NANJING AGRICULTURAL UNIVERSITY

Serum transporter identification method

The invention discloses a serum migration body identification method which comprises the following steps: extracting a serum migration body from serum by performing multiple centrifugal treatment on the serum; carrying out immunofluorescence staining treatment on the serum migration body to obtain an immunofluorescence stained serum migration body; and carrying out imaging treatment on the serum migration body subjected to immunofluorescence staining by utilizing a super-resolution fluorescence microscope SIM to identify the serum migration body. Whether an extracellular vesicle in serum is a migration body or not is identified from the two aspects of biochemistry and shape, so that the defect that the serum migration body is identified only from the shape in the prior art is overcome.
Owner:PEKING UNIVERSITY FIRST HOSPITAL (PEKING UNIVERSITY FIRST CLINICAL MEDICAL COLLEGE)

Virtual immunofluorescence staining of tissue samples using deep learning

Example systems and methods for generating virtual immunofluorescence stains for tissue samples are provided. A computing device receives a slide image of a target tissue sample of a particular tissue type. The computing device selects a first trained machine learning (ML) model to generate virtual immunofluorescence (IF) stains of a first type for the particular tissue type based on a user input. The first trained ML model is trained at least based on a first set of stain images of a plurality of training tissue samples with stains of the first type. The computing device generate a virtually stained image of the target tissue sample with the virtual IF stains of the first type using the first trained ML model. The computing device displays the virtually stained image of the target tissue sample with the virtual IF stains of the first type.
Owner:VERILY HEALTH INC

Circulating tumor cell enriching, separating and dyeing integrated system and application thereof

The invention relates to a circulating tumor cell enrichment, separation and dyeing integrated system and application thereof.The circulating tumor cell enrichment, separation and dyeing integrated system is composed of a bottom plate module, a platform module, a multi-pipette module, a power module and a shell module; the platform module comprises a sample tube rotating and uniformly mixing module, a magnetic adsorption module, a reagent module, a waste liquid pool module and a gun head module, and the sample tube rotating and uniformly mixing module, the magnetic adsorption module and the reagent module are fixedly mounted on a bottom plate I in sequence. The CTC separation and dyeing integrated system is developed on the basis of the immunomagnetic bead technology, enrichment separation and immunofluorescent dyeing of CTC can be automatically completed by running a program, manual operation errors are effectively avoided through a programmed process, and the CTC separation and dyeing integrated system is particularly suitable for clinical CTC detection. The system is also suitable for other enrichment and separation applications based on an immunomagnetic bead technology, including but not limited to enrichment and separation of biological macromolecules such as cells, exosomes, proteins and the like.
Owner:BEIJING NANOPEP BIOTECH CORP LTD

Immunofluorescence detection method and system for dynamically detecting mouse uterus structure development based on multiple time points

The invention provides an immunofluorescence detection method and system for dynamically detecting mouse uterus structure development based on multiple time points, and immunofluorescence staining comprises the steps of sheet unfolding, dewaxing, repairing, cell membrane punching, sealing, primary antibody treatment and secondary antibody treatment. The system comprises a sample pretreatment control module, a multi-channel confocal microscope imaging module and a data analysis module integrating fluorescence intensity calculation, Pearson co-localization analysis and a Western blot data integration algorithm. Through a multi-time-point and multi-index immunofluorescence detection method, dynamic and systematic data support is provided for mouse uterus development mechanism research, and an application basis is provided for fundamental research of reproductive biology and construction of related disease models.
Owner:GUANGDONG MEDICAL UNIV

Biological tissue sample immunolabeling and transparentizing method based on rapid degreasing

The invention discloses a rapid degreasing method for a biological tissue sample, which comprises the following steps: sequentially carrying out fixing, tissue dehydration, azeotropic degreasing, tissue rehydration and other treatments on the sample, and the degreasing solution is composed of alcohols and hydrocarbons according to a mass ratio of 1: 1-1: 2. According to the rapid degreasing method provided by the invention, the lipid in the tissue is efficiently extracted through mixed azeotropy of the alcohol and hydrocarbon organic reagents, so that the tissue is transparent and transparent; the problem of poor degreasing in tissues is solved by utilizing the high permeability characteristic of the micromolecular organic reagent; the dissolving capacity to phospholipid and cholesterol is improved by mixing organic reagents; through azeotropy, the degreasing efficiency is improved, the degreasing time is shortened, the internal permeability effect of the tissue is improved, and internal and external uniform permeability of the tissue is realized; by adjusting the components of the organic reagent, boiling rapid degreasing at low temperature is realized, and the retention of a fluorescence signal is improved; the tissue treated by the method is transparent and small in deformation, a fluorescent protein signal can be maintained, and the immunofluorescence staining effect can be improved.
Owner:HAINAN UNIV

Application of 4-isopropyltoluene to improvement of depression-like behaviors of mice

The invention discloses application of 4-isopropyltoluene to improvement of depression-like behaviors of mice. An experiment adopts a chronic constraint stress method to construct a depression model, through behavioral detection such as a sucrose preference test, a tail suspension test and a novel inhibition ingestion test, and in combination with molecular biology means such as immunofluorescent staining and Western blot, the anti-depression effect and potential mechanism of 4-isopropyltoluene are systematically evaluated, and the anti-depression effect and potential mechanism of 4-isopropyltoluene are evaluated. Results show that 4-isopropyltoluene plays a significant anti-depression role by inhibiting neuroinflammation, enhancing glial cell support function and activating AKT signal pathway, and has the potential of being developed into a novel anti-depression candidate drug.
Owner:YANAN UNIV

Multi-immunofluorescence staining cell target detection method and device based on environmental information fusion

The invention discloses a multi-immunofluorescence staining cell target detection method and device based on environmental information fusion. The method comprises the following steps: 1) constructing an image detection framework combined with environmental information fusion; 2) detecting network anchor point adjustment and positioning; 3) accurately positioning a feature map and generating cells in a classified manner; and 4) performing feature accurate positioning target detection based on environmental information guidance. According to the method, target category image target detection based on environment information conversion is realized through a feature vector accurate positioning form based on environment information of a DAPI image.
Owner:ZHEJIANG UNIV

Application of compound fresh bamboo juice in guinea pig asthma model

The invention discloses an application of a compound fresh bamboo juice in a guinea pig asthma model, and relates to the field of medicines, a Hartley albino guinea pig is adopted to construct an OVA induced asthma model, and the model is verified to be successfully constructed through evaluation indexes; evaluating the efficacy of the successfully constructed guinea pig asthma model by using different doses of compound fresh bamboo juice, and evaluating the efficacy of the guinea pig asthma model by scoring guinea pig capsaicin stimulation cough inducing times, alveolar lavage fluid leukocyte number, inflammatory factor content, lung tissue hydroxyproline content and behavioral signs. And evaluating the treatment effect of the compound fresh bamboo juice through Western blot detection, lung histopathology and immunofluorescence staining indexes. In a guinea pig asthma model, high-dose and medium-dose groups of the compound fresh bamboo juice can be used for remarkably reducing the number of cough, reducing the number of white blood cells in alveolar lavage fluid and the level of inflammatory factors and inhibiting pulmonary fibrosis, and a good treatment effect is shown. The results provide powerful support for potential application of the compound fresh bamboo juice in asthma treatment.
Owner:JIANGXI JIUHUA PHARMA +1

Immunofluorescent staining tool kit

The utility model belongs to the technical field of immunofluorescent staining, and particularly relates to an immunofluorescent staining tool kit which comprises a base, the cleaning module is detachably mounted on the base, and the cleaning module is used for cleaning the used cover glass; the dyeing module is detachably mounted on the cleaning module, and the dyeing module is used for dyeing the cover glass; and the cover plate is detachably mounted on the dyeing module. The utility model is convenient to use and can ensure the dyeing effect. The evaporation of the reagent in the long-time incubation process can be reduced, so that the dyeing effect is more stable. In addition, independent dyeing during simultaneous incubation and transfer of a plurality of cover glass can be guaranteed, and mutual confusion can be avoided. The cleaning module can simultaneously meet different requirements of rapid cleaning and long-time cleaning of the cover glass, reagent adding can be completed at a time, and the cumbersome step of replacing reagents for multiple times is omitted. Meanwhile, due to the detachable design, all the components can be cleaned and dried more easily, and the cover glass can be taken and placed conveniently, and cleaning liquid can be replaced conveniently.
Owner:SHANTOU UNIV·CHINESE UNIV OF HONG KONG JOINT SHANTOU INT OPHTHALMOLOGY CENT

Recombinant antigen and application of transfected living cell immunofluorescence method thereof in detection of anti-myelin oligodendroglia glycoprotein IgG antibody

The invention relates to the technical field of antibody detection, in particular to a recombinant antigen and application of a transfected living cell immunofluorescence method of the recombinant antigen in anti-myelin oligodendroglia glycoprotein IgG antibody detection. The method comprises the following steps: constructing a myelin sheath oligodendroglia glycoprotein expression plasmid, with an expression plasmid vector being pcdna3.1-target gene-linker-* 3Flag-P2A-EGFP, an amino acid sequence of the expression plasmid gene being as shown in SEQ ID NO: 1, a base sequence of the expression plasmid gene being as shown in SEQ ID NO: 2, carrying out cell transfection to make the expression plasmid enter a target cell, culturing for 16-28 h to obtain a cell immobilized with the expression plasmid, and purifying the cell to obtain the myelin sheath oligodendroglia glycoprotein. The kit can be used for detecting the anti-myelin oligodendroglia glycoprotein IgG antibody by an immunofluorescence staining method. The problems of antigen spatial conformation change, epitope shielding or cell shrinkage of cells are solved, and the detection sensitivity is improved.
Owner:TAIZHEN (JIANGSU) MEDICAL TESTING LABORATORY CO LTD

Dyeing module and immunofluorescence stainer

The utility model relates to a staining module and an immunofluorescence staining instrument, and the staining module comprises a mechanical arm module which is provided with a liquid suction and injection needle capable of moving along a preset direction; the glass slide module is provided with a cleaning groove and a plurality of glass slide grooves, the glass slide grooves are used for bearing glass slides, reaction holes are formed in the glass slides, and cleaning liquid is stored in the cleaning groove; when the glass slides are arranged in one or more glass slide grooves, the liquid suction and injection needle can enter the reaction hole and the cleaning groove of each glass slide in the movement process of the liquid suction and injection needle. After the liquid suction and injection needle enters the reaction hole of one glass slide and before the liquid suction and injection needle enters the reaction holes of the other glass slides, the liquid suction and injection needle enters the cleaning tank firstly, and the liquid suction and injection needle is cleaned through the cleaning liquid in the cleaning tank, so that pollution sources possibly carried by the liquid suction and injection needle are removed; the influence on washing among the glass slides is avoided, and the dyeing quality of a sample is improved.
Owner:SHENZHEN YHLO BIOTECH

A high-throughput automated immunofluorescence staining apparatus and a staining method thereof

This invention discloses a high-throughput automated immunofluorescence staining device and its staining method. The device includes a liquid injection motion module, a reaction chamber module, a supply and waste collection module, and a control system. The liquid injection motion module includes an X-axis beam and a pipetting and auxiliary material robotic arm, which are driven in parallel to achieve sequential operation. The reaction chamber module includes a temperature-controlled station, a low-temperature reagent storage unit, and an auxiliary material supply unit. The supply and waste collection module includes a waste removal and cleaning unit and an auxiliary material waste collection unit. This invention achieves a 96-station array through a temperature-controlled reaction station, combined with the dual-drive parallel operation of the pipetting and auxiliary material robotic arms, eliminating action waiting time and significantly improving throughput. The use of a closed semiconductor cooling component linked with an automatic flip-top mechanism ensures uniform reagent activity over a long period. A plate-mounted small vacuum pump drives a rigid pipeline with deep-hole waste suction, combined with high-flow-rate wide-area spraying, to thoroughly remove waste liquid and reduce cross-contamination. This achieves full-process automation, significantly improving staining quality and efficiency.
Owner:HUBEI UNIV OF TECH

An antibacterial polymer f127acbr with terminal modification of acetyl bromide, a preparation method and application thereof

This application belongs to the field of biomaterials, specifically relating to an antibacterial polymeric derivative of F127 with terminal modification of acetyl bromide, its preparation method, and its application. This application obtains F127AcBr by terminal modification of polymeric F127 with acetyl bromide via an acylation reaction. Its good antibacterial effect and biocompatibility were verified in vitro using plate antibacterial assays against Staphylococcus aureus and Escherichia coli, as well as live / dead staining assays of L929 cells and HUVEC cells. This application optimized the concentration of F127AcBr and loaded it into an MS hydrogel system. Excellent biocompatibility was confirmed in a diabetic mouse wound model using HE staining of mouse organs. Immunofluorescence staining against Staphylococcus aureus further confirmed the good antibacterial activity of F127AcBr.
Owner:WENZHOU INST UNIV OF CHINESE ACAD OF SCI

Method for preparing vascular organ chip from human umbilical artery stem cells

The invention discloses a method for preparing a vascular organ chip from human umbilical artery stem cells, and belongs to the field of biomedical engineering and tissue engineering. The method comprises the following steps: separating and culturing human umbilical artery stem cells to the third generation; preparing a PDMS micro-fluidic chip containing a liquid inlet channel, a liquid outlet channel, a growth channel and a central culture chamber; a blood vessel precursor aggregate is obtained through cell digestion, aggregate construction, mesoderm induction and blood vessel pedigree induction, the blood vessel precursor aggregate is inoculated into a Coll-1-Matrigel gel modified chip through a two-step method, and dynamic perfusion culture is conducted in combination with a culture medium containing VEGF-A and FGF-2. And finally, the structure and the function of the vascular organ are verified through immunofluorescent staining and fluorescent microbead perfusion. The problems that in the prior art, cell sources are limited, culture conditions are single and the like are solved, the high angiogenesis potential of the human umbilical artery stem cells and a dynamic culture system are utilized to construct a high-bionic-degree vascular network, and the method can be applied to drug screening, vascular pathological model construction and regenerative medicine research.
Owner:安胜军

Immunofluorescence staining method for karyocytes in blood

The invention discloses an immunofluorescence staining method for karyocytes in blood. When immunofluorescence staining is carried out, polylysine is used for treating a cell slide, and then the cell is fixed and smeared and dried, so that the cell and the slide are attached more tightly. The problem that cells fall off in the cleaning process can be effectively avoided. Meanwhile, non-blood cells in the blood sample can be effectively reserved.
Owner:SHANDONG AIMENG BIOTECHNOLOGY CO LTD

Tissue immunofluorescence bleaching and dyeing equipment

The utility model discloses tissue immunofluorescence bleaching and dyeing equipment, which relates to the technical field of immunofluorescence and comprises a bottom plate, a cover plate is arranged on the upper side of the bottom plate, a groove is arranged on the upper side surface of the cover plate, the bottom end of the cover plate penetrates into the groove and is provided with a drain hole, and a water blocking plug is arranged on the upper side surface of the bottom plate and penetrates through the drain hole. According to the utility model, waste of tissues during slicing is avoided, a plurality of samples can be treated at the same time, the tissues can be dyed more fully and thoroughly, and non-specific dyeing can be reduced.
Owner:XIEHE HOSPITAL ATTACHED TO TONGJI MEDICAL COLLEGE HUAZHONG SCI & TECH UNIV

Detection method of urine exfoliated podocyte

The invention discloses an absolute quantitative detection method for urine exfoliated podocyte, relates to the technical field of biomedical detection, and aims to solve the problem that the urine exfoliated podocyte cannot be accurately and absolutely quantified due to uncertain cell loss in a sample treatment process in the prior art. The method comprises the following steps: before carrying out any physical treatment on a urine sample, adding a known number of internal standard reference substances with physical characteristics similar to those of cells into the urine sample, carrying out co-enrichment treatment on a mixed sample containing target podocytes and the internal standard reference substances, and preparing a cell slide by adopting a standardized slide preparation technology; and carrying out podocyte specific immunofluorescence staining on the slide. Through the design of internal standard preposition and whole-course synchronous calibration, the cell loss error in the operation process is effectively overcome, the traditional semi-quantitative detection is improved into accurate and repeatable absolute quantification, and the reliability and clinical application value of a detection result are remarkably improved.
Owner:HUNAN MAIJING BIOTECHNOLOGY CO LTD

A method for constructing a cell membrane fusion model induced by a novel coronavirus-like particle

The application discloses a method for constructing a cell membrane fusion model induced by a novel coronavirus-like particle, and belongs to the technical field of biology. The method comprises the following steps: constructing a virus-like particle containing a SARS-CoV-2 spike protein gene and an RNA packaging sequence PS9, using HEK-293T cells as packaging cells, co-expressing structural proteins M, E, N and S protein, and realizing assembly of VLPs without replication ability. Subsequently, the VLPs are used to infect immortalized type II alveolar epithelial cells, S protein expression is induced and cell-cell membrane fusion is mediated without the need of BSL-3 laboratory conditions. The formation of fused giant cells can be directly observed through ZO-1 protein immunofluorescence staining, the model is stable, has high biological safety, and is repeatable in vitro. The application overcomes the safety risk of live virus infection and the authenticity problem of a transient transfection model, can be used for research on a SARS-CoV-2 virus membrane fusion mechanism, and has a good application prospect.
Owner:NANJING UNIV OF TRADITIONAL CHINESE MEDICINE

Cashmere goat hair follicle stem cell isolation culture identification and key marker detection method

According to the isolated culture identification and key marker detection method for the down producing goat hair follicle stem cells, trypsin and EDTA are used for jointly digesting skin tissue, and high-activity cells are efficiently obtained; a culture medium containing various growth factors is adopted for culture, and cell proliferation and stemness maintenance are promoted. And identifying and integrating morphological observation, growth curve determination and clone formation experiment to accurately judge the characteristics of the cells. Immunofluorescent staining and real-time fluorescent quantitative PCR are applied to key marker detection, and expression of markers such as CK15, CD34 and beta1 integrin is detected with high sensitivity. The method is high in separation efficiency, accurate in identification and sensitive in marker detection, can provide sufficient high-quality cells for the research on the hair follicle stem cells of the cashmere goat, assists in deeply understanding the biological characteristics and the regulation mechanism of the cells, and is of great significance for improving the yield and quality of cashmere and promoting the development of related biotechnologies.
Owner:XINJIANG ACAD OF ANIMAL SCI

Quantitative analysis method for axon-somatic synapse cell membrane protein

The invention relates to a quantitative analysis method for axon-somatic synapse cell membrane protein. The method comprises the following steps: performing layer scanning on neuronal cells subjected to immunofluorescence staining to obtain a confocal picture; selecting an image of a region of interest on a cell membrane through Fiji software, and straightening the image to obtain a linear cell membrane protein distribution image of RGB three channels; converting the obtained original image into binary images, overlapping the two binary images together to form a synthetic image, and displaying distribution and co-localization information of different membrane proteins on the synthetic image; membrane proteins on the synthesized image are counted and marked in size through Fiji software. According to the method, co-localization, counting and size information on the synaptic cell membrane protein can be quickly obtained on the original fluorescent staining picture of the neuronal cell by utilizing Fiji software. Therefore, research and analysis of related proteins can be more efficient, more convenient and more accurate.
Owner:SHAOXING RES INST OF ZHEJIANG UNIV

Cell climbing slide immunofluorescence staining device and method

The invention belongs to the field of cell biology, and particularly discloses a cell climbing slide immunofluorescence staining device and method.The cell climbing slide immunofluorescence staining device comprises a main body, a staining plate, four sets of climbing slide grooves formed in the staining plate and hydrophobic material films arranged in the climbing slide grooves; the connecting mechanism is arranged on the dyeing plate; the four sets of conical slide grooves with different volumes are formed in the dyeing plate, a person can select the corresponding slide groove according to the size of a cell slide and the concentration of a dyed antibody, the antibody waste is avoided, meanwhile, the person can conveniently take out the cell slide, and the hydrophobic material film is arranged on the inner surface of the slide groove, so that the dyeing effect is good. According to the present invention, the infiltration phenomenon caused by the hydrophilicity of the dyeing carrier material can be effectively avoided, such that the specific fluorescent antibody can be uniformly distributed on the cell slide during the dyeing process, the total amount of the added specific fluorescent antibody is reduced, and the test cost is reduced.
Owner:HUNAN ACAD OF CHINESE MEDICINE

Application of PDL1 antibody in corneal neovascularization disease

The present invention relates to the use of anti-PDL1 antibodies in the treatment of corneal neovascular diseases. The present invention constructs an animal model of corneal neovascularization induced by alkali burns, and performs slit lamp examination to evaluate corneal neovascularization and corneal vascular tissue immunofluorescence staining after topical application of anti-PDL1 antibodies. It is found that the corneal neovascularization of mice in the anti-PDL1 antibody treatment group is significantly reduced, indicating that topical application of anti-PDL1 antibodies can inhibit corneal neovascularization. It is confirmed that anti-PDL1 antibodies can significantly reduce PDL1 hi CXCR2 low The infiltration of neutrophil subsets inhibits the secretion of a series of inflammatory factors and vascular growth factors, thereby inhibiting pathological neovascularization. The present invention provides experimental basis and theoretical basis for the treatment of corneal neovascular diseases with anti-PDL1 antibodies and the expansion of clinical applications of anti-PDL1 antibodies, revealing that anti-PDL1 antibodies have clear clinical application prospects in the field of neovascular diseases.
Owner:ZHONGSHAN OPHTHALMIC CENT SUN YAT SEN UNIV

Separation method of tree shrew SMSCs, immortalized SMSCs, construction method and application

The invention discloses a tree shrew SMSCs separation method, tree shrew immortalized SMSCs, a tree shrew immortalized SMSCs construction method and application, and relates to the technical field of tree shrew immortalized SMSCs construction.The tree shrew immortalized SMSCs construction method includes the steps that mixed enzyme digestion is adopted to obtain adult primary tree shrew SMSCs, repeated differential adherent purification is utilized, and the tree shrew immortalized SMSCs are obtained; the SMSCs growth curve is observed through a CCK8 proliferation test, the cell morphology is observed through HE staining, the cell cycle and apoptosis conditions are detected through flow cytometry, and related marker gene and protein expression is identified through immunofluorescence and RT-PCR. Myogenic differentiation is induced by adopting a serum evacuation method, and the myogenic differentiation condition is detected by immunofluorescent staining. The adipogenic differentiation is induced by adopting a adipogenic inducer (DMEM / F12 + 0.5 mmol / L IBMX + 10 [mu] g / mL INS + 1 [mu] mol / L DEX + 1 [mu] mol / L rosiglitazone + 10% FBS + 10% HS + 1% double antibody), and the formation condition of lipid droplets after the adipogenic differentiation is identified by adopting oil fruit O dyeing. The separated and purified P3 generation cells are transfected by SV40 overexpression lentivirus, the cell viability after transfection and immortalization is detected through CCK8, symbolic protein expression is identified through immunofluorescence, SV40 gene expression is detected through RT-PCR, and cell senescence is detected.
Owner:THE FIRST AFFILIATED HOSPITAL OF GUANGXI MEDICAL UNIVERSITY

End-to-end cell senescence state prediction method based on nuclear membrane morphology

ActiveCN117252808BImage enhancementImage analysisNuclear membraneStaining
The present application relates to the technical field of edge detection algorithm, and particularly relates to an end-to-end cell aging state prediction method based on nuclear membrane morphology, which comprises the following steps: step one, collecting a fluorescence image of human fibroblasts subjected to immunofluorescence staining through a fluorescence microscope; step two, performing data enhancement processing on nuclear membrane data, amplifying training data, and improving model generalization capability; step three, generating a prediction of nuclear membrane segmentation mask through a deep neural network, and obtaining mask information; and step four, simultaneously inputting the mask information into an ellipticity module, a smoothness module and a concave degree module for multi-angle calculation and evaluation. The present application evaluates nuclear membrane morphology changes from multiple angles to meet the growing demand for quantification of cell aging state in the field.
Owner:COMP NETWORK INFORMATION CENT CHINESE ACADEMY OF SCI +1

Bionic endometrial organ construction method and intrauterine adhesion disease model construction method

The invention relates to a construction method of a bionic endometrial organ, which comprises the following steps: mixing three primary cells to obtain a mixed cell precipitate, and adding the mixed cell precipitate into a bionic organ culture medium; precipitating and resuspending the mixed cells to obtain a cell suspension; and adding Matrigel, and transferring into a constant-temperature cell culture box for culturing, so as to obtain the bionic endometrial organ. The regeneration promoting effect of the bionic endometrial organ provided by the invention is obviously better than that of transplanted pure stromal cells and pure epithelial organ groups, and the endometrial organ of the bionic cells has a huge application value in the aspect of tissue regeneration. According to the construction method of the intrauterine adhesion disease model, a fibrosis inducing factor TGF beta 1 is added into a bionic endometrial organ, immunofluorescent staining of a fibrosis marker alpha SMA is carried out, and the intrauterine adhesion disease model is obtained. By reproducing the pathological change of the intrauterine adhesion inner membrane, the model can be used as an intrauterine adhesion pathological model for disease pathological research or drug screening research.
Owner:ZHEJIANG UNIV

Soft tissue thick slice preparation and high-resolution multicolor fluorescence three-dimensional imaging method

The invention discloses a soft tissue thick slice preparation and high-resolution multicolor fluorescent three-dimensional imaging method. The method comprises the following steps: step 1, carrying out fixation and freezing protection treatment on a sample; step 2, putting the sample treated in the step 1 into an embedding medium, incubating and embedding to form an embedded block, and freezing and slicing the embedded block; the embedding medium comprises gelatin with a mass concentration of 8%, polyvinylpyrrolidone with a mass concentration of 2%, sucrose with a mass concentration of 20% and the balance of a phosphate buffer solution; step 3, unfreezing the slices in the step 2 in a room temperature environment, then carrying out pretreatment, antibody incubation and immunofluorescence staining, and carrying out pretreatment, antibody incubation and cell nucleus labeling in a dark environment; 4, performing three-dimensional imaging on the sample sliced in the step 3 by adopting a turntable confocal microscope to obtain three-dimensional data of tissue fluorescence distribution; however, the polyvinylpyrrolidone inhibits the formation and growth of ice crystals in the freezing process of the embedded block, and ensures the accuracy of the dyeing effect.
Owner:WEST CHINA STOMATOLOGICAL HOSPITAL OF SICHUAN UNIV

Multi-subtype antigen co-transfected cell immunofluorescence staining method and application

The invention belongs to the technical field of antibody detection, and particularly relates to a multi-subtype antigen co-transfected cell immunofluorescence staining method and application. The method is established for the purpose of a CBA detection method, the basic principle is similar to that of an overexpression antigen cell immunofluorescence method for existing anti-GFAP-IgG antibody detection, and the difference is that three GFAP subtypes are adopted for cotransfection design, antigen subtypes are covered, and the problem of leak detection is avoided. According to the invention, the high-quality expression of the antigen is realized by self-constructing the plasmid based on the pCDH lentiviral vector. According to the invention, by optimizing the schemes of fixation, transparent preservation and the like after cell transfection culture, the dyeing performance is enhanced, and the preservation effect is improved.
Owner:TAIZHEN (JIANGSU) MEDICAL TESTING LABORATORY CO LTD

Prediction method and system for immunotherapy effect of liver cancer

The invention relates to the technical field of deep learning, and discloses a prediction method and system for a liver cancer immunotherapy effect. The method comprises the following steps: carrying out multiple immunofluorescence staining pretreatment on a clinical sample, and collecting forward scattering data, lateral scattering data and multi-channel fluorescence data of mononuclear cells to obtain a cell expression initial data matrix; performing standardization processing to obtain a multi-dimensional feature matrix expressed by the immune factors; performing Bayesian network analysis, calculating a conditional probability relation and a mutual information value between immune cell factors, and constructing an immune factor association network; performing anomaly detection to obtain an immune factor expression anomaly detection result; and performing minimum tail boundary analysis on the immune factor expression anomaly detection result, solving an optimal risk boundary through a semi-definite programming model, and outputting immune factor anomaly quantitative evaluation data, thereby realizing quantitative risk evaluation of the prediction result and refined grading of the prediction result.
Owner:PEKING UNIVERSITY SHENZHEN HOSPITAL

A method for three-dimensional imaging of intrahepatic blood vessels based on non-diffracting airy beam

The application discloses a kind of based on non-diffracting airy beam intrahepatic blood vessel three-dimensional imaging method, belong to intrahepatic blood vessel three-dimensional imaging technical field, solve the problem of insufficient accuracy and detection sensitivity of existing detection method, method includes by liver transplantation or biopsy surgery obtains liver tissue, liver tissue is fixed using 4%PFA processing, liver tissue is bleached using H2O2Solution, antigen repair is carried out to liver tissue using FLASH solution, using goat serum blocking solution to the liver tissue after antigen repair blocking treatment;Liver tissue immunostaining treatment, liver tissue dehydration treatment, based on non-diffracting airy beam and high-throughput microscope to the liver tissue after processing imaging, obtain the three-dimensional imaging picture of liver tissue;The application is immunofluorescence staining and transparent treatment to liver tissue, so that laser can smoothly penetrate tissue and carry out three-dimensional imaging, can realize single wide-range image capture.
Owner:TIANJIN UNIV