108 results about "Live cell imaging" patented technology

This disclosure provides a novel method and system for characterizing morphodynamic profiles of objects, such as biological entities. This disclosure provides a shape, appearance, and motion (SAM) phenotype Observation Tool (SPOT). SPOT establishes a standardized SAM “phenome,” image descriptors resembling single-cell transcriptomes, to comprehensively quantify a cell's instantaneous state without prior knowledge. SPOT also establishes a standardized workflow for temporal analysis. SPOT is a generalist tool, applicable to any live-cell imaging and advances biomedical discovery through its standardized, unbiased, streamlined workflow to quantify phenotypic heterogeneity and predict phenotype-genotype-function coupling.

The invention belongs to the technical field of living cell imaging, and discloses a living cell nucleic acid imaging system and method based on CRISPR (clustered regularly interspaced short palindromic repeats) and a nano antibody and application, the system comprises: a modified dCas protein expression vector containing n antigen polypeptide tags; the modified sgRNA and / or crRNA expression vector comprises a specific guide sequence; the fluorescent nano-antibody expression vector contains m fluorescent nano-antibody coding sequences which are connected in an operable manner, and fluorescent protein serving as an internal tag is inserted between nano-antibody splitting sites, can be combined with a polypeptide tag carried by dCas protein and can stably emit light; and the fluorescent nano antibody in a free state can be self-degraded, so that the fluorescent nano antibody does not emit fluorescence. According to the invention, the single-copy nucleic acid sequence, especially the imaging marker of the single-copy nucleic acid sequence in a living cell, can be visualized with single-molecule resolution and high signal-to-noise ratio.

The invention discloses a cell culture and microscopic imaging integrated device which adopts an integrated design and comprises an imaging assembly, a fluorescence excitation assembly, an objective lens assembly, an automatic shading assembly, a two-dimensional displacement platform, a cell culture assembly, a bright field light source assembly and a shell, the imaging assembly, the fluorescence excitation assembly, the objective lens assembly, the automatic shading assembly and the two-dimensional displacement platform are integrated in the shell, the cell culture assembly is arranged on the two-dimensional displacement platform, and the bright field light source assembly is arranged above the shell. The device has the advantages that the bright field light source, the fluorescence excitation module, the imaging assembly and the cell culture assembly are integrated together, the device is complete in overall function, compact in structure, free of multiple sets of systems and convenient and fast to operate, the temperature and gas environment needed by cell culture are provided through the cell culture assembly, and the requirement for long-time real-time observation of living cell imaging is met; cell culture, multichannel fluorescence imaging and analysis can be completely realized through a single device, the operation process is simplified, and the working efficiency is improved.

The invention discloses a construction method and application of a gastric cancer treatment effect evaluation model of CAR-T cells, and the constructed gastric cancer treatment effect evaluation model of the CAR-T cells comprises a CAR-T cell and gastric cancer organ co-culture killer dynamic detection system and a CAR-T cell, intestine organ and lung organ co-culture safety evaluation system. Based on a CAR-T cell and gastric cancer organoid co-culture lethality dynamic detection system, the process that CAR-T cells act on gastric cancer organoid can be dynamically observed through a living cell imaging method, then the action mechanism of the CAR-T cells for treating solid tumors is studied, and meanwhile, based on a CAR-T cell, intestine organoid and lung organoid co-culture safety evaluation system, the CAR-T cells and the gastric cancer organoid co-culture lethality dynamic detection system can be used for evaluating the CAR-T cells and the gastric cancer organoid co-culture lethality. Compared with the prior art, the preclinical model has the advantages that the effect of the CAR-T cells on gastric cancer para-tissues and other tissue-derived organs can be detected, and safety evaluation is carried out, so that the preclinical model for more comprehensively detecting the gastric cancer treatment effect of the CAR-T cells is obtained, and the research on CAR-T cell targets is facilitated.

The invention discloses a living cell imaging method and device based on holographic microscopy, and the method comprises the steps: placing a living cell sample on a three-dimensional micron-order displacement platform, and controlling the spatial position of the living cell sample; dividing the laser light source into a reference light beam and a sample light beam; the sample light beam is focused on a living cell sample through a microscope, then reaches a holographic detector through an optical element, and interferes with the reference light beam to generate a holographic image; reconstructing the holographic image to obtain a three-dimensional image of the living cell sample; according to the method, the optimal initial path of the sample light beam and the reference light velocity on the holographic detector is obtained based on the population algorithm, so that the optical path difference is minimized, the overall imaging quality is improved, the holographic image is reconstructed through phase recovery, and the final three-dimensional image has higher resolution and better dynamic tracking capability.

The present technique provides a simple, cost-effective and robust method for re-alignment of interfaces between cell conjugates parallel to the coverslip. The technique is based on placement of two cell types, to subsequently form an interaction between the cell types, to opposing coverslips and then bringing them together before or during imaging, for either fixed or live cell imaging. Spacer particles having defined parameters control the z-separation and the relative lateral position of the opposing coverslips. We show that our method allows most types of super-resolution imaging.

A sample monitoring structure includes fluorescently-labeled hydrogel that is size-responsive to changes in one or more properties of aqueous liquid medium contacted with the sample monitoring structure. An intensity of a fluorescent emission from the sample monitoring structure changes with changes in the size of the fluorescently-labeled hydrogel. The sample monitoring structure is advantageously used in automated processing and analytical evaluation of large numbers of fluid samples over extended periods of time analytical evaluation systems, including flow cytometry systems, live cell imaging and analysis systems and parallel bioreactor system. The sample monitoring structure may be in a form of sample monitoring beads for addition to liquid media of fluid samples subjected to analytical evaluation.

The invention discloses a vesicle transportation path prediction system based on artificial intelligence, and relates to the technical field of vesicle transportation, which comprises the following steps of: accurately extracting a complete time sequence movement track of a single vesicle before and after disturbance by virtue of fluorescence living cell imaging under a disturbance experiment condition in combination with a target detection model YOLOv8 and a depth correlation tracking algorithm DeepSORT; the problem that perturbation conditions are insufficiently perceived is solved, through a multi-modal data matrix, the model has the time sequence perceiving capacity for changes of a local space structure where vesicles are located, so that the sensitivity and modeling capacity of the model for track variation in a complex environment are remarkably improved, deep fusion of multi-modal features is achieved by building a double-branch fusion model, and the accuracy of the model is improved. The problem that an existing prediction model cannot actively recognize and correct prediction deviation is effectively solved, and the stability and the actual usability of the system are improved.

The invention discloses a 25-time liquid immersion objective lens for microscopic imaging, which is characterized in that silicone oil is used as a liquid immersion medium, and the focal length of each lens group and the structures of a middle lens group and a rear lens group are selected; the refractive indexes of the first lens and the last lens in the front lens group and the air interval change range of the third balsaming lens in the middle lens group and the last lens in the front lens group are selected; the third balsaming lens moves back and forth relative to the last lens in the lens group to adjust the system aberration caused by the thickness change of the cover glass, and meanwhile, the refractive index, the focal length and the ratio of the focal length to the outer diameter of the last lens in the front lens group are selected to control the spherical aberration of the marginal light; the fifth balsaming lens is selected as negative focal power to correct the field curvature of the system, and the sixteenth lens is matched with the fifth balsaming lens to reduce astigmatism of the system, so that the problem in living cell imaging is solved.

The utility model discloses a miniature cell culture chamber suitable for ultrahigh-flux living cell imaging. The miniature cell culture chamber comprises a culture box with an opening at the front end, a culture plate is connected in the culture box in a sliding manner; a plurality of imaging grooves are formed in the culture plate; an adapter for placing a culture vessel is arranged at the top of the culture plate; the adapters and the imaging grooves are the same in number and are arranged in a one-to-one correspondence mode. A CO2 inlet and an N2 inlet are formed in the top of the incubator; an air filter, a heating module and a humidifier are arranged in the incubator; a lamp panel is arranged at the top of the incubator; lED lamps are distributed at the bottom of the lamp panel in an array mode. A transparent imaging plate is arranged at the bottom of the incubator. Through cooperation of the culture plate, the imaging groove, the imaging plate, the adapter, the LED lamp and other components, the living cell ultra-high-flux imaging device can achieve living cell ultra-high-flux imaging, is convenient to operate, high in space utilization rate and small in internal space, and can guarantee uniformity of internal gas, temperature and humidity.

The invention relates to the technical field of cytobiology and biomedicine detection, and discloses a time sequence fluorescence tracing system based on a coupling detection lipid probe. Comprising an imaging detection module which is used for adding FM lipophilic styrene fluorescent dye in a culture environment, forming a membrane probe to observe the morphological change of a membrane and detect the formation of vesicles, and completing the complete time sequence tracing of the cell endocytosis process by adopting a content dyeing method; the deep learning module is used for carrying out deep learning on the obtained time sequence image, establishing a living cell imaging screening and image analysis system, and identifying protein molecules related to the target external vesicles; carrying out image description on the generation, transportation and fusion processes of the vesicles generated by the proteins in different stages before fusion of the outer vesicles and the cell membranes and after fusion and shearing; and the knock-down operation module is used for exploring the generation mode of the vesicle contents in the early endosome in combination with knockout and knock-down operations of the specific drug compound.

The invention belongs to the technical field of RNA (Ribonucleic Acid) detection, and particularly relates to an alkenyl indole derivative as well as a preparation method and application thereof in the field of RNA fluorescent probes. The alkenyl indole derivative takes alkenyl indole as a mother nucleus, is a novel functional fluorescent probe, can be used for dyeing RNA (Ribonucleic Acid) in cells, and widens the range of fluorescent probe types. The process of detecting RNA by using the compound as a fluorescent probe is not interfered by other components, and the compound shows excellent anti-interference performance and high fluorescence intensity. Besides, the preparation process is simple, raw materials are easy to obtain, reaction conditions are mild, and the product is stable in structure and convenient to store, has important application value in the fields of RNA detection and biological function research, and particularly shows wide application prospects in the fields of living cell imaging, molecular diagnosis and the like.

The invention discloses a functionalized targeting fluorescent nanoprobe and application thereof in protein mutation analysis, and relates to the technical field of biology, the fluorescent nanoprobe comprises a targeting molecule-PEG hydrophilic bridging molecule and a matrix; the preparation method comprises the following steps: adding nano-seeds into fluorescent molecules to prepare fluorescent nano-particles, and stirring and mixing the fluorescent nano-particles with targeting molecules-PEG hydrophilic bridging molecules; the method is combined with deep learning to be applied to protein mutation analysis. The multifunctional integrated protein mutation receptor targeted fluorescent nanoprobe provided by the invention can accurately mark the position of a mutant protein at a single cell level, and can realize in-situ, real-time and dynamic living cell imaging of a tumor cell endogenous molecular mutant protein; and qualitative and quantitative analysis of tumor cell protein mutation can be realized through subcellular localization of the targeted fluorescent nanoprobe.

The invention discloses a targeted KRAS G12C environment-sensitive fluorescent probe as well as a preparation method and application thereof, the fluorescent probe is a compound shown in the following formula or pharmaceutically acceptable salt thereof, and the structural formula is shown in the specification. The invention also specifically discloses a preparation process of the targeted KRAS G12C environment-sensitive fluorescent probe and application of the targeted KRAS G12C environment-sensitive fluorescent probe in preparation of a living cell imaging detection preparation. According to the invention, a known KRAS G12C covalent inhibitor structure is reasonably modified according to a molecular docking mode of the inhibitor and KRAS G12C, and an environment-sensitive fluorescent labeling group is introduced to form the environment-sensitive fluorescent probe with a switch mechanism, so that the environment-sensitive fluorescent probe has the advantages of simplicity and convenience in operation, no need of washing, no need of paraformaldehyde fixation of cells and the like; the invention aims to realize the intuitive visualization of KRAS G12C in living cells / in vivo, and assists in the research and visual application of targeted therapy.

The invention relates to a cell stretching device compatible with performing in vitro stretching tests using automated high-resolution live cell imaging on living cells or their tissues by applying the cells to be tested to the cell culture surface of an elastic membrane. The invention further relates to a method for performing in vitro cell stretching tests using such a cell stretching device in a multimodal manner (i.e., in the various stretching modes radial / equibiaxial, uniaxial, biaxial, and in different orientations of the principal stretching directions).

The invention belongs to the technical field of cell culture meat screening, and particularly relates to a cell culture meat food hazard factor screening system and device.The cell culture meat food hazard factor screening system comprises a sensing unit, an execution unit, an analysis unit and a control unit; the sensing unit comprises an integrated sensor and living cell imaging equipment, the integrated sensor is used for collecting the culture environment of cell culture meat in real time, and the living cell imaging equipment is used for dynamically tracking the cell growth state; the execution unit is used for executing sample data acquisition and detection according to presetting; and the analysis unit analyzes and processes the data information sent by the sensing unit and the execution unit based on an AI data analysis platform. The intelligent level of screening the harmful factors of the cell culture meat can be greatly improved, so that dynamic evaluation and early warning of the harmful factors in the production process of the cell culture meat are realized, workers can timely and effectively perform corresponding treatment, and the production quality of the cell culture meat is further ensured.

1. The name of the product of this design: Digital holographic living cell imaging analyzer. 2. Purpose of this design product: This design product is used for microscopic imaging and data analysis in the field of life sciences. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: Stereoscopic diagram 1.

The present technique provides a simple, cost-effective and robust method for re-alignment of interfaces between cell conjugates parallel to the coverslip. The technique is based on placement of two cell types, to subsequently form an interaction between the cell types, to opposing coverslips and then bringing them together before or during imaging, for either fixed or live cell imaging. Spacer particles having defined parameters control the z-separation and the relative lateral position of the opposing coverslips. We show that our method allows most types of super-resolution imaging.

The utility model relates to a cooling assembly for a living cell imager, which comprises a base and a water storage tank, the base is provided with a cooling water inlet and a cooling water return port, a water flow channel is formed between the cooling water inlet and the cooling water return port, the water storage tank is arranged below the water flow channel, and the water storage tank is arranged below the cooling water inlet and the cooling water return port. And the water storage tank is provided with a condensate water outflow channel. The water storage tank is additionally arranged in the water cooling system of the living cell imager, so that condensed water generated in the water cooling process can be stored, and then the condensed water with the temperature consistent with that in the incubator is discharged into the incubator. The cooling requirement of the living cell imager is met, and the temperature in the incubator is not changed. The problem of how to enable the living cell imager to normally work in the incubator for a long time is effectively solved.

The invention discloses an automatic focusing module and an automatic focusing method for high-flux living cell imaging. The automatic focusing module comprises a base; a Z-axis moving mechanism is arranged on the base; a converter fixing seat is arranged on the Z-axis moving mechanism; an electric converter is arranged on the converter fixing seat; the electric converter is provided with a laser automatic focusing sensor and an objective lens. The laser automatic focusing sensor and the objective lens are integrated on the electric converter, when the laser automatic focusing sensor detects the distance of a specimen, the laser automatic focusing sensor does not need to move along the X-axis and the Y-axis, the position of the objective lens only needs to be switched through the electric converter, the Z-axis moving mechanism drives the objective lens to move to a proper position along the Z-axis, and then photographing and imaging can be completed. Errors caused by repeated displacement can be effectively avoided, the imaging effect is improved, the working efficiency can be improved, and the working time can be shortened.

The invention discloses an antibody targeting light activated fluorescent protein Dronpa and related application thereof.The amino acid sequences of CDR-H1, CDR-H2 and CDR-H3 in a heavy chain variable region of the antibody are shown as SEQ ID NO.4-6 respectively, and the amino acid sequences of CDR-L1, CDR-L2 and CDR-L3 in a light chain variable region of the antibody are shown as SEQ ID NO.7-9 respectively. According to the antibody and the application thereof, accurate tool support is provided for detection and analysis of Dronpa protein, and the antibody can be applied to detection of Dronpa protein. Meanwhile, a key technical guarantee is provided for life science experiments (such as living cell imaging and molecular mechanism research) and potential clinical application based on the Dronpa protein.

The present application belongs to the field of chemical synthesis and biotechnology, and particularly relates to a kind of sugar metabolism product molecular probes and preparation method thereof. Starting from fructose, a bio-orthogonal group is added to the 4-position hydroxyl group of the compound without affecting the biological activity of the sugar metabolism product. The present application provides a kind of sugar metabolism product probe and preparation method thereof, compared with the prior art, has the following beneficial effects: (1) the present application first synthesizes an endogenous sugar metabolism product molecular probe that can undergo click chemistry reaction, by adding a bio-orthogonal group to the 4-position hydroxyl group, the biological activity of the sugar metabolism product is maintained, which can be used for live cell imaging; (2) the probe of the present application has not been reported, and the synthesis method has less side reaction, mild reaction condition, good selectivity, can reflect the behavior of endogenous sugar metabolism product in cells, including direct reaction of sugar metabolism product in live cells Subcellular localization and tracing, is an important technical support for the study of live cell sugar metabolism.

The present invention belongs to the technical field of RNA detection, and particularly relates to an alkenyl indole derivative, a preparation method thereof, and an application in the field of RNA fluorescent probes. The alkenyl indole derivative uses alkenyl indole as the mother nucleus and is a novel functional fluorescent probe, which can stain RNA in cells and broadens the range of types of fluorescent probes. The process of using this compound as a fluorescent probe to detect RNA is not interfered by other components, showing excellent anti-interference performance and high fluorescence intensity. In addition, its preparation process is simple, the raw materials are easily available, the reaction conditions are mild, the product structure is stable, and it is convenient for storage. It has important application value in the fields of RNA detection and its biological function research, and particularly shows broad application prospects in the fields of live cell imaging, molecular diagnosis, etc.

The invention discloses a dicyanomethylene-4H-pyran-based fluorescent probe DCM-Pro as well as a preparation method and application thereof, the probe realizes fluorescence intensity and fluorescence lifetime response to polarity change of a microenvironment by optimizing a molecular structure, and can be covalently bound with protein through a Michael addition reaction. The polarity sensitivity of the probe is adjusted by regulating and controlling the proportion of local excited states in the intramolecular charge transfer process. The fluorescence lifetime of the DCM-Pro is linearly related to the polarity of the microenvironment, and the change of the polarity of the microenvironment in the protein aggregation process can be quantitatively detected. The probe is a fluorescence lifetime probe sensitive to polarity and can be used for visual detection of iron-mediated protein aggregation. The probe has good biocompatibility and specificity, is suitable for living cell imaging, provides a new tool for researching protein aggregation in the ferroptosis process, and also provides a new method and thought for mechanism research and drug screening of neurodegenerative diseases.

The present invention relates to novel compounds capable of localized fluorescent signal amplification by peroxidase, a method for preparing them, and their uses as fluorescent probes. The compounds according to the present invention serve as new fluorescent amplification probes utilizing peroxidase, enabling the generation of a localized labeling pattern at the target site. Through this, they provide super-resolution protein localization information and allow the visualization of interactions between various organelles. Furthermore, they can provide localized and stable fluorescent signals in CLEM and super-resolution imaging and enable selective fluorescent labeling under fixed conditions, making them highly applicable in future proteomics and live-cell imaging.

The invention belongs to the technical field of biomolecules, and particularly relates to a living cell imaging system and method for visually detecting cell nucleus mechanics and application. The invention provides a probe composition for detecting cell nucleus mechanics. The probe composition comprises NuTS1 and NuTS2, wherein the NuTS1 and the NuTS2 are arranged in the probe composition; wherein the NuTS1 is composed of an LMNA-bd1, a TM1, a YPet fluorescent protein, a tension linker F40, an ECFP fluorescent protein and a CC-SUN1; and the NuTS2 is composed of LMNA-bd2, TM2, a YPet fluorescent protein, a tension linker F40, an ECFP fluorescent protein and a CC-SUN2. Based on the probe composition, the invention constructs a living cell imaging system of the cell nucleus mechanics, the system can perform real-time dynamic imaging of the cell nucleus mechanics in living cells, and the system has important significance for constructing a research platform of the cell nucleus mechanics and a drug screening platform related to the research platform of the cell nucleus mechanics.

The invention discloses a design synthesis and evaluation method based on a dicyanoisophorone fluorescent probe. According to the invention, based on the design principle of the fluorescent probe and a classical organic synthesis method, a series of bifunctional fluorescent probes DCX-1-20 which are based on dicyanoisophorone fluorophores and have targeting capability and related index detection capability are designed and successfully synthesized for the first time, and the bifunctional fluorescent probes DCX-1-20 can be accurately positioned to hepatocytes, lysosomes and mitochondria; the probe can be used for detecting biomarkers such as H2S, Cys, hydrogen peroxide, carboxylesterase, acetylcholin esterase, butyrylcholin esterase and the like. The synthesized representative liver-targeting fluorescent probe DCX-1 has excellent photophysical characteristics, good selectivity to Cys, no response to other analytes, excellent anti-interference capability, good stability, low cytotoxicity and excellent living cell imaging and liver-targeting capability, can be used for Cys imaging in zebra fish bodies, and can be used for detecting Cys imaging in zebra fish bodies. The visualization of the Cys in a living body, especially in hepatocytes, is realized.

The utility model discloses a manual adjustment carrier applied to a living cell imager. The manual adjustment carrier comprises a frame main body, an objective table arranged on the frame main body and a perforated plate outer frame arranged on the objective table, the frame body is provided with an X-axis adjusting assembly for driving the perforated plate outer frame to move in the X-axis direction and a Y-axis adjusting assembly for driving the perforated plate outer frame to move in the Y-axis direction. When the device is carried on a living cell imager, the perforated plate carried on the perforated plate outer frame can be accurately adjusted in the XY axial direction, and the observation efficiency can be improved; wherein the frame main body is of a U-shaped structure, the objective table is of a thin-plate-shaped structure, a highly-symmetrical and compact structure can be formed when the objective table is carried on the living cell imager, the whole set of the objective table is smaller and more attractive on the basis that the observation efficiency can be improved, and the working distance of the living cell imager in the Z-axis direction is not affected.

The utility model discloses a high-throughput living cell imaging analysis system, which comprises a bottom plate and a sample table above the bottom plate, a first platform is slidably arranged at the top of the bottom plate along the X direction, the first platform is driven to slide by a first lead screw motor, a second platform is slidably arranged on the first platform along the Y direction, and the second platform is driven to slide by a second lead screw motor. A vertical sliding block is arranged at the top of the second platform in a sliding mode in the Z direction, the vertical sliding block is driven by a precise lead screw motor to slide, and a fluorescence imaging mechanism is arranged on the vertical sliding block. The whole set of instrument can be placed in a CO2 culture box, so that long-time living cell imaging of cells can be realized in a proper culture state. Different experiment conditions can be independently set for each cell culture container, and various experiments can be simultaneously realized in the same environment.