81 results about "Systems biology" patented technology

BioMEMS/NEMS appliance biologically monitors an individual, using biosensors to detect cellular components. Data is simulated or analyzed using systems-biology software, which provides diagnostic or therapeutic guidance.

Embodiments of the invention relate to omni-tomographic imaging or grand fusion imaging, i.e., large scale fusion of simultaneous data acquisition from multiple imaging modalities such as CT, MRI, PET, SPECT, US, and optical imaging. A preferred omni-tomography system of the invention comprises two or more imaging modalities operably configured for concurrent signal acquisition for performing ROI-targeted reconstruction and contained in a single gantry with a first inner ring as a permanent magnet; a second middle ring containing an x-ray tube, detector array, and a pair of SPECT detectors; and a third outer ring for containing PET crystals and electronics. Omni-tomography offers great synergy in vivo for diagnosis, intervention, and drug development, and can be made versatile and cost-effective, and as such is expected to become an unprecedented imaging platform for development of systems biology and modern medicine.

A systems biology approach is used to characterize and relate the intestinal (gut) microbiome of a host organism (e.g. a human) to physiological processes within the host. Information regarding the types and relative amounts of gut microflora is correlated with physiological processes indicative of e.g., a patient's risk of developing a disease or condition, likelihood of responding to a particular treatment, for adjusting treatment protocols, etc. The information is also used to identify novel suitable therapeutic targets and/or to develop and monitor the outcome of therapeutic treatments. An exemplary disease/condition is the development of hepatic encephalopathy (HE), particularly in patients with liver cirrhosis.

The invention described herein provides for methods of profiling cellular models of disease. Cellular systems biology is the investigation of the integrated and interacting networks of genes, proteins, and metabolites that are responsible for normal and abnormal cell functions. Methods and reagents for the profiling a disease state, the treatment of a disease state and assaying of treatments of a disease state are provided.

The invention belongs to the field of application of near-infrared laser, nuclear irradiation, electron and image rebuild in systematic biology and medicine. It is characterized in that high-specificity nuclear species and fluorescent probe are implanted in live animal to realize double mark of muscle deep layer or internal organ tumor cell. The emission signal of nuclear species is checked by sensitive electron-multiplier phototube in array copulation position of scintillation crystal; feeble fluorescent signal generated by visible light or infrared agitation is checked by high quantum yield CCD camera. The two checking systems are orthogonally arranged in the same surface, the live nuclear species and fluorescent signal can be checked simultaneously through rotary image cavity, and double module three dimensional tomography image of small animal can be rebuilt with software algorism. The invention is characterized by multi-image forming modules, abundant information and simple operation.

The invention discloses a pharmaceutical activity prediction and selection method based on genetic expressions and drug targets. The method comprises following steps: 1) obtaining target genes corresponding to drugs to be detected according to information in drug target database; obtaining genetic expression data of disease tissues of patients and corresponding compression data and obtaining important genetic lists of morbidity processes of patients by evaluating importance of genes through a systems biology method; 2) searching for whether the target genes obtained in the step 1) target the important gene lists during mobility of the patients or not through statistical analysis of in order to predict pharmaceutical activity of patients and select drugs suited to patients. The method is easily used with high efficiency and broad application scope. The prediction method can be used for selecting drugs suitable for individual patients such that a personalized treatment schme can be provided for patients.

The invention discloses a method for predicting an N6-methyladenosine modification site in RNA based on stacking integration, belonging to the field of systems biology. The method comprises the following steps: extracting RNA sequence features of three species, namely saccharomyces cerevisiae, homo sapiens and arabidopsis thaliana through six feature extraction methods, and conducting feature fusion to obtain an initial feature space of an original data set; performing dimensionality reduction on the initial feature space by using an elastic network, eliminating redundant and noise features, and reserving important features related to model classification so as to obtain an optimal feature set; inputting optimal feature subsets and corresponding category labels into stacking integration for model training, and evaluating the prediction performance of a model in combination with evaluation indexes to obtain a prediction model; and inputting a to-be-predicted RNA sequence in a test set into the prediction model, predicting the m6A site and outputting the m6A site. The prediction accuracy of the model on the test set reaches 92.30% and 87.06% respectively, and the model has good development potential in the aspect of cross-species prediction and is expected to become a useful tool for identifying the m6A site.

The invention provides a polypeptide chip, which comprises a substrate and n polypeptides distributed on the substrate in an array, each polypeptide sequence has 10-20 amino acids, a group consistingof sequences of first to nth polypeptides covers at least 95% of a viral protein sequence, the adjacent polypeptides have an overlap of 3-8 amino acids, and n is 810-1370. According to the method, proteomics and system biology strategies are adopted, all coded protein sequences of COVID-19 are extracted from NCBI data, an SARS-CoV-2 virus proteome polypeptide chip is designed and prepared, and panoramic scanning of all SARS-CoV-2 virus antibodies in blood of a novel pneumonia virus infected patient is achieved.

The invention belongs to the technical field of genetic engineering, and particularly relates to a multi-gene locus simultaneous editing method based on an endogenous CRISPR-Cas system of zymomonas mobilis and application thereof. The method mainly comprises the following steps of: constructing a plasmid containing an artificial CRISPR expression unit; selecting a plurality of target editing target loci, and designing a gRNA sequence; connecting a plurality of gRNA sequences in series, and constructing the gRNA sequences on the plasmid containing the artificial CRISPR expression unit; constructing a donor DNA sequence on a vector to obtain an edited plasmid; and transforming the edited plasmid into competent cells for editing. The method constructs a gene editing platform by utilizing theendogenous CRISPR-Cas system of zymomonas mobilis, breaks the limitation of low efficiency of exogenous CRISPR-Cas9 genome editing in the strain, realizes rapid and efficient knockout of multiple genes in the strain, and promotes the development of metabolic engineering, systemic biology and synthetic biology.

The invention discloses a metabonomics analysis method base on acute anaphylactic reaction. The invention mainly starts from the systems biology, and applies a UPLC-QTof/MS technology platform for UPLC and SPE-RRLC-Q-TOF combination, and establishes an acute anaphylactic reaction guinea pig serum metabonomics evaluation model, and provides a basis for further research of medicament acute anaphylactic reaction. During analysis, the UPLC and SPE-RRLC-Q-TOF combination technology is used for detecting serum samples of normal guinea pig and experiment guinea pig with acute anaphylactic reaction generated by induction, and a metabolome spectrogram is obtained by an acquisition method after optimization, and a mode identification method suitable for evaluating animal acute anaphylactic reaction is established for analyzing the metabolome data, which establishes a base for subsequently and furtherly screening biological tag with characteristics and developing a new animal acute anaphylactic reaction detection method.

The invention belongs to the technical field of genetic engineering, particularly relates to a genome editing method based on a zymomonas mobilis endogenous CRISPR-Cas system and application thereof and aims at taking Z.mobilis 4 as a type strain and utilizing the I-F type CRISPR-Cas system coded by its genome to establish a genome editing platform. A powerful tool is provided for basic research and application research in the strain and similar cells, and the development of metabolic engineering, system biology and synthetic biology is promoted. According to the technical scheme, the genome editing method is characterized by comprising the steps of constructing a plasmid containing an artificial CRISPR expression unit; selecting a guide RNA sequence aiming at a target site; constructing aguide RNA primer sequence on the plasmid containing the artificial CRISPR expression unit; constructing a donor DNA sequence on a vector to obtain an editing plasmid; transforming the editing plasmidinto competent cells for editing.

The present invention is directed to the identification of a biomarker specifically located in the plasma membrane of pancreatic beta cells. It was selected by a Systems Biology approach on Massively Parallel Signal Sequencing datasets obtained in human islets and Affymetrix microarray datasets on human islets, purified rat primary beta and non beta cells and insulinoma cells. Based on a set of specific features the biomarker is a unique candidate for imaging and targeting strategies to study the pancreatic beta cell mass in health and disease (T1 D, T2D, pancreatic cancers, obesity, islet transplantation, beta cell regeneration). The five specific features of the selected biomarkers are: 1) Preferentially expressed in pancreatic islets as compared to surrounding tissues; 2) Higher expression in pancreatic beta cells than in pancreatic alpha cells or than in other islet non-beta cells; 3) Expression levels in pancreatic beta cells are higher or comparable to glucokinase which is an enzyme specifically expressed in the pancreatic beta cell; 4) Located in the membrane and as such targetable with antibodies, peptides or small molecules which allows imaging, targeting and immunohistochemistry; and 5) Expression is not induced during the process of inflammation of the beta cell mass and the protein is not enriched in T-cells and dendritic cells or in other cells participating in the inflammation process.

The invention provides a myeloma signal path mechanism confirming method based on a modular factor graph. The method comprises the steps that 1, RPPA data is obtained; 2, the RPPA data is preprocessed, and key proteins are screened in a coarse-grained mode; 3, based on the key proteins screened in the coarse-grained mode, mutual effect channels of proteins in cells in a rigid cell environment are established to form signal channels; 4, an ordinary differential equation is adopted to describe the signal channels, the signal channels are decomposed into multiple small modules, and parameter optimization is conducted on the small modules to establish a system biology model; 5, parameter analysis is conducted on the system biology model, wherein the parameter analysis includes stability analysis and sensitivity analysis. By the adoption of the method, the calculation cost of the system model in signal channel detection is effectively reduced, and the calculation efficiency is improved.

This invention provides methods for inhibiting or treating infection by viruses, in particular pox viruses by modulating a kinase, in particular by inhibiting a host cell kinase, involved in mediating viral infection. Methods to identify, validate, and classify the cellular proteins required by viruses during infection of host cells in order to select agents which can inhibit viral infection are described herein. Using a systems biology approach the virus/host cell interaction is studied from initial attachment of the incoming virus to the cell surface, to entry, transcription, replication, biosynthesis, and assembly of progeny particles. The method employs a siRNA screening platform and uses gene silencing to map the ‘viral infectome’—a compilation of cellular proteins that the virus needs to establish infection and drive the infectious cycle. Charting the infectome provides information on the viral biology by the identification of host cell proteins involved in viral infection and allows the development of novel anti-viral drugs that prevent the viruses from establishing productive infection in cells.

The invention discloses a method for establishing and analyzing a scale metabolism network model of actinoplanetes genomes, and belongs to the field of systems biology. Cell growth simulation, essential growth essential genes and reaction verification are carried on the scale metabolism network model of actinoplanetes genomes established based on the method on a system level, a strategy is provided for simulating and improving acarbose yield, and an important platform is provided for comprehensively understanding the metabolic characteristics of actinoplanetes and improving the acarbose fermentation level. The invention provides multiple methods for improving the acarbose yield, the acarbose yield can be increased by 53.5% by adding nicotinic acid, and the acarbose yield is respectively increased by 29.6%, 26.5%, 26.3%, 11.8% and 9.2% by adding glutamic acid, cysteine, lysine, glutamine and asparagines.

The inventive method employs a ''systems biology'' approach to predicting hepatotoxicity and other biological hepatocyte responses resulting from exposure to the test substance. In one embodiment, the invention provides an automated method for predicting the hepatocyte biological systems effect of a test substance. In another embodiment, the invention provides a method for constructing a knowledgebase (or database) of cellular systems biology response profiles for reference substances with known biological systems effects. In another embodiment, the invention provides a set of protocols and software tools used to carry out the profiling. Another embodiment of the invention is a panel of reagents. In another embodiment, the invention provides a set of protocols and software tools used to carry out the profiling. Another embodiment of the invention is a panel of reagents and protocols required for generating cellular systems biology response profiles, either to create a knowledgebase, or to use with an existing knowledgebase and informatics software to profile substance physiological effects. Another embodiment of the invention is a database of physiological profiles.

The present invention describes an integrated genome-scale metabolic network model construction and analysis method with Pichia stipitis as an example, belonging to the system biology field. Based on the method, a constructed and obtained Pichia stipitis genome-scale metabolic network model is subjected to cell growth simulation of a system level and identification of a minimal gene and reaction set, and an important platform is provided for comprehensive understanding of metabolic characteristics and mechanism of the Pichia stipitis is provided.

The invention discloses a non-coded RNA and disease association prediction method based on sparse subspace learning and belongs to the field of system biology. The method comprises steps of 1, constructing an adjacency matrix associated with non-coded RNA-diseases, and then respectively calculating Gaussian spectrum kernel similarity of the non-coded RNA and Gaussian spectrum kernel similarity ofthe diseases; 2, calculating a graph theory characteristic matrix and a statistic characteristic matrix according to two similarity matrixes and an adjacent matrix, further constructing a target function and solving a mapping matrix G; and 3, solving non-coded RNA-disease association pair relationship score prediction matrixes, and performing sorting to give the final prediction result. The methodis advantaged in that a graph theory, a statistical method and a machine learning method are fused, the information of a negative sample in the non-coded RNA-disease associated data can be effectively utilized, the non-coded RNA with significant correlation to disease occurrence and development can be efficiently, accurately and quickly predicted, and problems of long time consumption and high cost of a biological experiment method are effectively solved.

The invention discloses a non-coding RNA and disease relationship prediction method based on Hessian regular non-negative matrix factorization, and belongs to the field of system biology. The method mainly comprises the following three steps: 1, respectively calculating Gaussian spectrum kernel similarity of non-coding RNA and Gaussian spectrum kernel similarity of diseases; 2, calculating a prediction score of the non-coding RNA-disease association pair by using an iterative solution algorithm; 3, sorting the scores according to the calculated non-coding RNA-disease association, and giving afinal prediction result. According to the method, the internal manifold structure of the data is described meticulously through Hessian regularization, so that the information of a negative sample iseffectively utilized; the l2, 1 norm constraint and the approximate orthogonal constraint ensure the group sparsity of the coding matrix, and the influence of noise data can be weakened. According tothe method, a relatively reliable prediction result can be obtained, and the problems of long consumed time and high cost of a biological experiment method are effectively solved.

The invention relates to application of metabonomic technology in intrauterine growth retardation, which is mainly characterized by starting from the view of system biology (Cowley AW Jr.The elusive field of systems biology. Physiol Genomics.2004;16(3):285-286), and applying a magnetic resonance spectroscopy technology based metabonomic method to seek a nuclear magnetic resonance spectrogram capable of specifically reflecting the intrauterine growth retardation in the peripheral blood of an experimental pregnant animal or a pregnant woman so as to provide proofs for further diagnosing the intrauterine growth retardation. The application comprises the following steps: during analysis, detecting a biological sample (comprising parent blood, embryo blood and amniotic fluid) of the pregnant animal or the pregnant woman in normal pregnancy and intrauterine growth retardation experiment by using nuclear magnetic resonance technology, acquiring a metabonomic spectrogram, analyzing the metabonomic spectrogram by using a pattern identification method, determining the metabonomic change of the intrauterine growth retardation through analysis and comparison, and acquiring one or more (groups of) nuclear magnetic resonance spectrograms for reflecting the intrauterine growth retardation from the metabonomic change so as to provide theoretical and experimental proofs for the subsequent further determination of a biomarker and the application of the metabonomic technology in the intrauterine growth retardation. The application has the advantages of high sensitivity, good specificity, early stage, non-invasion or micro-invasion and the like.

The invention discloses an organic mass spectrum flow cytometry technology which comprises the following steps: preparation of a protein labeled flow cytometry probe and a cell labeling method, construction of an organic mass spectrum flow cytometry device, mass spectrum flow cytometry detection of a cell suspension sample, and extraction and analysis of protein labels and metabolite information in a single cell mass spectrum. The technology is high in universality, the device is simple, and rapid, efficient, high-throughput and high-sensitivity sample analysis can be achieved. The flow mass spectrometry probe marks a large number of organic tags on target proteins, so that the detection sensitivity reaches the single cell level, qualitative and quantitative analysis of multiple target proteins and a large number of metabolites at the single cell level can be realized, and a large number of single cell level information is obtained. The technology has wide application prospects in the fields of cell identification, cell typing, research on characteristic difference substances in cells, tumor diagnosis, systematic biology research and the like.