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81 results about "Single-cell analysis" patented technology

In the field of cellular biology, single-cell analysis is the study of genomics, transcriptomics, proteomics and metabolomics at the single cell level. Due to the heterogeneity seen in both eukaryotic and prokaryotic cell populations, analyzing a single cell makes it possible to discover mechanisms not seen when studying a bulk population of cells. Technologies such as fluorescence-activated cell sorting (FACS) or digital dielectrophoretic sorting (DEPArray), allow the precise isolation of selected single cells from complex samples, while high throughput single cell partitioning technologies, enable the simultaneous molecular analysis of hundreds or thousands single unsorted cells; this is particularly useful for the analysis of transcriptome variation in genotypically identical cells, allowing the definition of otherwise undetectable cell subtypes. The development of new technologies is increasing our ability to analyze the genome, and transcriptome, of single cells, as well as to quantify their proteome and metabolome. New developments in mass spectrometry techniques have become important analytical tools for proteomic and metabolomic analysis of single cells. In situ sequencing and fluorescence in situ hybridization (FISH) do not require that cells be isolated and are increasingly being used for analysis of tissues.

Glass nanopore probe based on aptamer and application of glass nanopore probe in dopamine detection

PendingCN121613146AMicrobiological testing/measurementScanning probe microscopyAptamerComplementary deoxyribonucleic acid
The invention provides a glass nanopore probe based on an aptamer and application of the glass nanopore probe in dopamine detection, and belongs to the technical field of electrochemical sensing and scanning probe microscopy. The sensor comprises: a glass nanopore probe, the inner wall of which is modified with a gold layer; a cDNA (complementary deoxyribonucleic acid) single chain is fixed on the gold layer through a gold-sulfur bond; a part of the sequence of the dopamine aptamer is hybridized and combined with the cDNA single chain; wherein the combination of the dopamine and the dopamine aptamer causes the change of an ion current rectification signal of the glass nanopore probe, so that the detection of the dopamine is realized based on the change of the ion current rectification signal of the glass nanopore probe. The invention provides a valuable scheme for developing an aptamer nanopore scanning electrochemical sensor for single cell analysis and researching neurotransmitter-related diseases.
Owner:TIANJIN UNIV

Micro-fluidic chip for chemiluminescence imaging detection of single-cell secretions and use method of micro-fluidic chip

The invention relates to a micro-fluidic chip for chemiluminescence imaging detection of single-cell secretions and a use method of the micro-fluidic chip. The micro-fluidic chip is composed of a single cell analysis layer and a glass substrate layer. The single cell analysis layer is prepared from polydimethylsiloxane and is provided with a capture channel, a sample introduction channel and a lantern-shaped microstructure array, the lantern-shaped microstructure comprises a small-size cell capture trap and a large-size chemiluminescence detection chamber, the small-size cell capture trap is connected with the capture channel, and the large-size chemiluminescence detection chamber is connected with the sample introduction channel. After a mixed solution of cells and a detection reagent is introduced into the capture channel, single cell capture is realized on the capture trap due to flow resistance difference; then, introducing air into the capture channel and the sample introduction channel to form a gas-in-liquid microcavity, and carrying out single cell isolation and incubation reaction; finally, the signal switch molecules and the substrate liquid are sequentially injected into the chemiluminescence detection chamber through the sample injection channel, and quantitative detection is conducted on the single-cell secretions according to chemiluminescence imaging signals.
Owner:NANJING UNIV

Gene testing method for t-cell receptor (TCR) or b-cell receptor (BCR) and gene testing kit

To provide a gene testing method and a gene testing kit for analyzing a variable region of a TCR or a BCR in single-cell analysis.SOLUTION: A method including a step of capturing mRNA eluted from a single cell using an RT probe immobilized on a solid-phase surface and including a common sequence, a cell identification barcode, a first molecular identification barcode, and an oligo(dT) sequence, a step of performing a reverse transcription reaction in a reverse transcription reaction solution containing a TSO using the mRNA as a template to generate cDNA having a sequence added to a 3' end, a step of degrading the mRNA, a step in which a primer for inserting a second molecular identification barcode binds to a constant region adjacent to a variable region of a TCR or a BCR and includes the second molecular identification barcode, a step of ligating cDNA extended from the primer with a ligase, a step of amplifying a fragment including the second molecular identification barcode and the variable region of the TCR or the BCR using a primer, a step of performing sequence analysis, and a step of associating sequences.SELECTED DRAWING: Figure 2
Owner:HITACHI LTD

Rapid programmable generation device and method for cascade droplet array

The invention discloses a rapid programmable generation device and method for a cascade droplet array. The device comprises a hydrophobic fan-shaped substrate, a scraper blade, a radially arranged hydrophilic stack point array and a driving device. Driving the mother liquid drops to move along the surface of the hydrophobic substrate through the rotation of the scraper, and dividing the mother liquid drops into micro-droplets residing in a hydrophilic area by utilizing the surface tension difference between the hydrophilic stack point and the hydrophobic substrate; the liquid drop volume is dynamically controlled by adjusting the rotating speed of the scraper blade or the diameter gradient distribution of the stack points, and the gradient liquid drop array is generated through single operation. The device does not need an external pump valve or a precise sealing device, has the advantages of open type passive operation, low cost, high flux, high stability and the like, is suitable for scenes of drug screening, single cell analysis, instant detection and the like, and remarkably improves the flexibility of micro-droplet generation and the experiment efficiency.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Microorganism detection device based on single cell analysis

The invention discloses a microbiological detection device based on single cell analysis, which comprises an incubator, an assembly frame is arranged on the upper side of the incubator, a driving part is arranged on the lower side of the assembly frame, the driving end of the driving part penetrates through the assembly frame and is connected with a turntable, and a support frame is arranged on the upper side of the assembly frame. According to the technical scheme, the incubator and the detection probe of the detection device are combined, the incubator and the detection probe of the detection device are assembled in a vertical arrangement mode, the distance between the incubator and the detection probe of the detection device is short, and then detection operation can be directly carried out after microorganism culture is finished; the condition of pollution in the sample transfer process can be reduced, and the detection quality is improved.
Owner:CHONGQING IND POLYTECHNIC COLLEGE +2

A method for pico-coulomb level single bacterium surface charge imaging and application

PendingCN122282753AElectron Transport PathwayMicro imaging
This invention belongs to the field of microbial electrochemistry and single-cell analysis technology, and specifically relates to a femtocoulomb-level single-bacterial surface charge imaging method and its application. This technology is based on electrochemiluminescence microscopy, utilizing the spontaneous enrichment of cationic ECL luminescent molecules by the electrostatic field of the negative charge on the bacterial surface, thereby non-destructively enhancing its ECL signal. By establishing a quantitative relationship between the ECL intensity enhancement ratio and the number of adsorbed molecules, and combining this with COMSOL simulation to determine the thickness of the luminescent layer, it achieves for the first time high-throughput, high spatiotemporal resolution dynamic quantitative measurement of femtocoulomb-level charges on the surface of a single living bacterium. The invented technology has high sensitivity, high resolution, and good biocompatibility, and can be used to reveal bacterial metabolic-charge regulation mechanisms, analyze synergistic electron transport pathways, and screen highly electroactive bacterial subpopulations in situ, providing a key tool for microbial electrochemical research.
Owner:NANJING UNIV

Liquid biopsy for diagnosis of early osteoarthritis

Compositions and methods are provided for determining the presence of early-stage osteoarthritis (OA) in an individual by single cell profiling of a blood sample. Through use of machine learning, it is shown that immune cell features associated with OA are present and detectable in the early stages of OA and can be utilized for early detection of the disease.
Owner:THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIV

A single-cell online extension lysis mass spectrometry flow analysis method

The application discloses a single-cell online prolonging lysis mass spectrometry flow analysis method. A cell suspension sample is injected into a separation capillary, a front section of the capillary is spirally wound to realize single dispersion of the cells, and a part of a rear section of the capillary is located in an ultrasonic device to realize online ultrasonic lysis, localized single-cell lysis contents are obtained, the content solution gradually enters a non-contact electrospray needle to realize ionization, and finally enters a mass spectrometry detector for detection. Meanwhile, the analysis coverage of weakly polar compounds can be improved by combining a plasma generation device. The method can realize single-cell analysis with high throughput and high metabolite coverage, and by means of a prolonged single-cell detection window, the collection of metabolite primary mass-to-charge ratio information and the identification of secondary structures under high resolution can be realized, including qualitative and quantitative analysis of positional isomers, so that the method has wide application prospects in the fields of cell identification, cell typing, differential substance research, tumor diagnosis and biomarker mining.
Owner:PEKING UNIV

RNA detection and amplification method for single cell analysis on fixed cells

The disclosure includes systems, methods, compositions, and kits for determining the spatial position and / or copy number of a nucleic acid target in a fixed sample. In some embodiments, detection oligonucleotides comprising a coupling sequence, a probe sequence configured to hybridize to a nucleic acid target, and / or a predetermined spatial label are provided. Methods can include contacting each of two or more spatial positions of a sample comprising a copy of a nucleic acid target with the probe oligonucleotide. Methods can include in situ extending a probe oligonucleotide hybridized to a copy of a nucleic acid target to produce more than one extended probe oligonucleotide. In some embodiments, a method may include barcoding more than one extended probe oligonucleotide using more than one oligonucleotide barcode to generate more than one barcoded probe oligonucleotide.
Owner:BECTON DICKINSON & CO

Single cell mapping and transcriptome analysis

Methods of tagging cells with unique oligonucleotide “zipcode” constructs are provided. By these methods and associated compositions, cells in a multicellular structure such as a tissue section can be tagged with a construct, the unique composition of which is associated with the cells position in the multicellular structure. Subsequently, the multicellular structure can be dissociated into single cells and a single cell transcriptome analysis performed, as well as other types of single cell analyses. By preserving positional information in the analyzed single cells, biological processes within the tissue can be mapped. By these methods, the effects of the local environment surrounding a cell on its state and various functions can be elucidated, and intra-tissue processes can be mapped and observed. Likewise, coordinated actions by multiple cells within a tissue can be mapped and tracked over time.
Owner:RGT UNIV OF CALIFORNIA

A transposase-based 5mCpG high-throughput detection method TnM-seq, transposase TnM and single-cell multi-omics application

PendingCN122648558ACells/microLOmics technologies
The application provides a 5mCpG high-throughput detection method TnM-seq based on TnM transposase, which adopts transposase TnM including an MBD domain to detect 5mCpG in situ, and comprises the following steps: after pretreatment of cells to be detected, the cells are incubated with transposase TnM; DNA in the target sample after transposition is recovered and purified; the purified DNA is subjected to PCR library construction; and the library construction product is subjected to high-throughput sequencing. The new transposase TnM newly designed and synthesized is used, combined with high-throughput sequencing, to realize convenient, fast, low-cost and high-sensitivity detection of 5mCpG in a sample. Based on the transposase TnM, a multi-omics technology HAM-seq for simultaneously detecting histone modification H3K9me3, chromatin accessibility and DNA methylation modification 5mCpG in the same sample is further developed, and after being combined with a commercial single-cell microfluidic platform, an epigenome and gene expression four-omics technology EpiX-seq for single-cell analysis in a complex tissue is obtained.
Owner:ZHEJIANG UNIV

Single-cell profiling of phagocytosis using microscopy

PCT designated stageWO2026112146A1Material analysisPhagocytic CellSingle-cell analysis
The invention relates to methods of evaluating phagocytosis at a single-cell level by placing one or more phagocytes and one or more particles on a surface and visualizing the phagocytosis of the particles by the phagocytes. The invention also relates to systems for evaluating phagocytosis of a particle by a phagocyte at a single-cell level.
Owner:UNIV HOUSTON SYST

Method for automatically detecting abnormal cells in urine exfoliated cells

The invention provides a method for automatically detecting abnormal cells in urine cast-off cells, which comprises the following steps of: training an abnormal cell frame selection recognition algorithm, and generating an abnormal cell frame selection recognition model; according to the abnormal cell frame selection recognition model, abnormal cell frame selection recognition of a to-be-tested sample is achieved. The method is suitable for early preliminary diagnosis screening and postoperative reexamination of bladder urothelium carcinoma, has the advantages of early noninvasive detection, convenience in analysis and report, simplicity and standardization in operation, suitability for automatic analysis of instruments and the like, and not only can eliminate non-cell impurities in a complex background, but also can effectively separate overlapped cells, so that the detection accuracy is improved. And a foundation is laid for subsequent single cell analysis.
Owner:FIRST AFFILIATED HOSPITAL OF DALIAN MEDICAL UNIV

A ratiometric bipolar electrode electrochemiluminescence biosensor based on quasi-homogeneous reaction and its application

The present invention discloses a ratiometric bipolar electrode electrochemiluminescence biosensor based on quasi-homogeneous reaction and its application. 2+ Using the DNA / TPrA system as a dual-anode signal source, a novel ratiometric bipolar electrode electrochemiluminescence biosensor for miRNA detection and analysis was constructed. By combining the ligase chain reaction with CRISPR / Cas technology and integrating gold nanoparticle-modified Fe3O4 magnetic nanoparticles enriched with ferrocene nucleic acid signal probes (DNA-Fc / Au@Fe3O4 NPs) as a multifunctional reaction interface, the sensor effectively modulates the signal changes of the two ECL reaction systems. Ultrasensitive detection of miRNA-222 is achieved through the ratio of the two signals. The constructed sensor exhibits exceptional performance for miRNA-222 detection and is expected to be applied as a novel detection method in early clinical diagnosis and single-cell analysis.
Owner:FUJIAN MEDICAL UNIV

Thresholding techniques for supplementary nucleotide tag assignment in single-cell analysis

PCT designated stageWO2026178041A1NucleotideAnalysis tools
The present disclosure provides systems and methods for making sequencing libraries that are useful for quantitatively analyzing nucleic acids in a sample. In certain implementations, assigning of cell-associated features within single-cell data may be practiced as part of sample processing and / or as a standalone analysis tool. Cells determined to be positive for a respective class or classes of gRNA may then be further processed using other analysis operations described herein.
Owner:ILLUMINA INC

A liver cancer prognosis marker and application thereof

The application discloses a liver cancer prognosis marker and application thereof, and the liver cancer prognosis marker comprises TXNRD1, HAO1, C1S, OPTN and SNX6. The application provides a group of liver cancer prognosis markers, and a liver cancer patient prognosis prediction model is constructed based on the liver cancer prognosis markers. The liver cancer prognosis markers are obtained through comprehensive gene expression levels, single cell analysis and spatial transcriptome analysis, and the diversity of the data set and the large sample quantity improve the reliability and universality of the liver cancer prognosis markers and the liver cancer patient prognosis prediction model.
Owner:SHENZHEN PEOPLES HOSPITAL

Use of ndufb4 as a target in the preparation of a drug for treating bladder cancer

The application discloses application of NDUFB4 as a target point in preparation of a drug for treating bladder cancer. Single cell analysis results show that NDUFB4 is highly enriched in bladder cancer epithelial cells, and can be used as a key coordinator to participate in the regulation of multiple carcinogenic signal pathways. Through shRNA-mediated gene silencing and CRISPR / Cas9-mediated gene knockout experiments, it is found that NDUFB4 deletion can significantly inhibit the proliferation, migration and invasion ability of bladder cancer cells, and cause a serious bioenergy crisis, and activate the endogenous apoptosis pathway. In a subcutaneous xenotransplant tumor model, it is further verified that NDUFB4 silencing can significantly inhibit tumor growth. The application discloses that NDUFB4 is a key coordinator between mitochondrial high-functionality and carcinogenic signal pathways, and it is suggested that NDUFB4 can become a potential target for bladder cancer treatment.
Owner:CHANGZHOU NO 2 PEOPLES HOSPITAL

Systems, compositions, and methods for single cell analysis

Provided herein are systems, compositions, and methods for single cell analysis. In particular, provided herein are systems, compositions, and methods for scalable, high-throughput isolation and sequencing of nucleic acids from rare and / or fragile single cells.
Owner:FLUID DISCOVERY

Non-enzymatic dissociation of FFPE tissue and generation of single cells with intact cell surface markers

The present disclosure is directed to a non-enzymatic dissociation method which facilitates the dissociation of one or more formalin-fixed paraffin-embedded tissue samples into dissociated single cells. The present disclosure is also directed to methods of single cell analysis, i.e., methods of analyzing and / or measuring target components (e.g., biomolecules such as, but not limited to, polypeptides, polynucleotides, small molecules, and the like) on or in cells non-enzymatically dissociated from one or more FFPE tissue samples.
Owner:VENTANA MEDICAL SYSTEMS INC

Liquid drop micro-fluidic chip based on micro-filtration array

The invention provides a liquid drop micro-fluidic chip based on a micro-filtration array. The micro-filtration array structure is highly integrated in the water phase sample introduction area of the chip, synchronous filtration of cell suspension in the inflow process is achieved, newly formed cell blocks or fragments can be effectively intercepted and prevented from entering the liquid drop generation area, and therefore the liquid drop wrapping quality is guaranteed from the source. In an actual test, the droplet micro-fluidic chip has an efficient filtering capability, supports the droplet generation frequency of about 1000 Hz, has been verified in a 293T cell suspension system, has good stability and repeatability, and can be widely applied to single cell sequencing, cell screening and other high-throughput single cell analysis scenes.
Owner:MOBIDROP (ZHEJIANG) CO LTD +1

Single-cell analysis system and method based on precise typing of lung cancer immune microenvironment and treatment prediction

This invention relates to the fields of bioinformatics and precision oncology medicine, specifically disclosing a single-cell analysis system and method based on precise typing and treatment prediction of the lung cancer immune microenvironment. The system includes a data preprocessing and quality control module, a lung cancer-specific cell annotation module, an immune microenvironment typing module, a clinical efficacy prediction module, and a visualization report generation module. These modules form a complete technical chain from raw data to clinical efficacy prediction. Furthermore, this invention provides a scheme for precise typing and treatment prediction of the lung cancer immune microenvironment matching this system. This invention can take single-cell transcriptome data (which can integrate spatial transcriptome data) from lung cancer patients as input, process it through a series of specific computational modules, and finally output immune microenvironment typing results and treatment response prediction results with clear clinical guidance significance, solving the problems of unclear typing, fragmented processes, and insufficient clinical translation capabilities in existing technologies.
Owner:WEST CHINA HOSPITAL SICHUAN UNIV

A multi-task cell analysis method and system based on residual graph neural network

The application discloses a kind of multi-task cell analysis method and system based on residual graph neural network, comprising: normalizing single-cell transcriptome data, selecting the top 2000 genes with the highest transcription level from the normalized data, obtaining new single-cell transcriptome data;According to the new single-cell transcriptome data, construct and train denoising auto-encoder, reduce the dimension of original single-cell transcriptome data, obtain the feature representation after dimension reduction;Using the feature representation after dimension reduction constructs adjacency matrix, constructs residual graph neural network model;Connecting the graph neural network model with the denoising auto-encoder, construct double self-supervised model and train;According to the double self-supervised model, output the clustering result, interpolation result and low-dimensional representation of single-cell transcriptome data.The method and system provided by the application greatly improve the feature discrimination of network extraction, improve the performance of each single-cell analysis task.
Owner:YANGZHOU UNIV

Novel microfluidic cell focusing and analysis method based on special optical fiber

The invention provides a novel microfluidic cell focusing and analysis method based on a special optical fiber. The device is characterized by comprising a microfluidic channel, a seven-core optical fiber and a peripheral device, a frustum is processed at the optical fiber end of the seven-core optical fiber, light beams can form a convergent light field after passing through the frustum, a spherical capture area can be formed at a convergent point, and particles can form single cell flow after passing through the capture area; a middle core of the seven-core optical fiber transmits exciting light to irradiate a single cell flow, scattered light and fluorescent light can be generated, back scattered light passes through the middle core and is collected by a circulator, and fluorescent light signals are collected through side cores. The method can be used for generating single cell flow and can be widely applied to the fields of single cell analysis technology and the like.
Owner:GUILIN UNIV OF ELECTRONIC TECH +1

Microfluidic Methods for Single-Cell Analysis

A first aspect of the present invention relates to a method for detecting a target compound in a microfluidic system. A second aspect of the present invention relates to the use of the method according to the first aspect for monitoring a biological event. Another aspect of the present invention relates to a microfluidic system and its use for implementing the method according to the first aspect.
Owner:HIFIBIO SAS

Flow type single cell scale adjustable device and adjusting method for electrospray ionization mass spectrometry

The invention relates to the technical field of single cell analysis of cell biology and analytical chemistry, in particular to a flow type single cell scale adjustable device for electrospray ionization mass spectrometry and an adjusting method. According to the present invention, the detection requirements of multi-size cells can be met, the target cells with different sizes in the range of 10-100 [mu] m can be screened through the arched channel switching of the arched shunting capture module, and the comprehensiveness of the detection sample can be ensured. According to the device, the arched channels can be rapidly switched to adapt to cells of different sizes without disassembling the device, continuous operation of sample introduction, screening, extraction, ionization and detection is realized through integrated flow design, high throughput and convenience are taken into account, and the device is adaptive to diversified environmental pollutant exposure metabolism research scenes. The cell suspension and the diluent are mixed on line to reduce non-volatile salt interference, the high-voltage electric field and the sheath gas cooperate to improve ionization efficiency, qualitative and quantitative analysis is achieved through orbitrap mass spectrometry, reliable data support is provided for accumulation, distribution and metabolic transformation characteristics of pollutants in cells, and detection accuracy is guaranteed.
Owner:GUANGDONG INST OF ANALYSIS CHINA NAT ANALYTICAL CENT GUANGZHOU

Microfluidic method for single cell analysis

The present invention concerns a method for capturing and barcoding nucleic acid from single cells, a plurality of microfluidic droplets and a method for preparing said plurality of microfluidic droplets.
Owner:HIFIBIO SAS

Working space controllable magnetic field control system, method, equipment, medium and product

The invention discloses a working space controllable magnetic field control system, method and device, a medium and a product, and relates to the technical field of automatic instrument control, and the system comprises an execution module, a visual feedback module and a control module; the control module controls the execution module to adjust the magnetic pole distance according to the size information of the controlled object, and the working space is adjusted to a first preset size; the control module acquires a controlled object image according to the visual feedback module and judges whether the working space meets a preset condition or not; if not, the execution module is controlled to adjust the working space; and if yes, controlling the execution module to drive the controlled object to move to the target position along the preset path. Through dynamic adjustment of the size of the working space and closed-loop feedback control, high-precision magnetic control operation is achieved, the problems that a traditional system is fixed in working space and poor in adaptability are effectively solved, and the system is suitable for scenes such as micro-nano robot control and single cell analysis.
Owner:SHANGHAI UNIV

Analysis device for carrying out tumor single cell analysis by utilizing artificial intelligence and use method of analysis device

The single cell analysis apparatus for tumor analysis using artificial intelligence according to various embodiments of the present invention may include a memory, a communication unit, and a processor. The processor may be configured to: acquire single cell data on a tumor of a specific patient through the communication unit; preprocessing the single cell data of the tumor through a data preprocessing module; performing type classification based on the preprocessed data through a cell type definition module; predicting, by a single cell status prediction module, a phenotype inferrable from the RNA expression of the specific patient's tumor; materializing the heterogeneity of the specific patient tumor by a tumor analysis module; and generating a report according to the analysis result of the tumor of the specific patient through an analysis result generation module, and providing the report.
Owner:WITTGEN BIOTECHNOLOGIES INC

Methods and compositions for spatially-resolved single cell sequencing

Provided herein, among other things, is a method for spatial single cell analysis. In some embodiments, the method may comprise: obtaining a cellular sample comprising nucleic acid molecules, binding spatial tags to the sample, removing any unbound or unreacted spatial tags, determining the location and identity of the spatial tag, dissociating the sample into single cells, performing single cell sequencing, determine the spatial barcode for each single cell, and assigning the single cell sequencing reads to its spatial location.
Owner:SCALE BIOSCIENCES INC