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65 results about "Kras mutation" patented technology

Kras mutations and resistance to Anti-egfr treatment

InactiveUS20140134158A1Preventing and reducing and delaying onset of drug resistanceMicrobiological testing/measurementDisease diagnosisAcquired resistanceKras mutation
The disclosure provides compositions and methods for detecting and predicting acquired resistance to anti-EGFR treatment in colorectal cancers. Also provided are compositions and methods of preventing, reversing or delaying the acquired resistance. The present disclosure also provides kits for use in the methods described herein.
Owner:MEMORIAL SLOAN KETTERING CANCER CENT

Screening and anti-tumor application of KRAS mutation specific T cell receptor

ActiveCN112300269AEffectively identify and killGrowth inhibitionNucleic acid vectorFermentationEpitopeImmune effects
The invention provides two specific T cell receptors targeting G12V or G12C mutation epitopes of a KRAS gene and an anti-tumor application. The two T cell receptors respectively consist of an alpha peptide chain and a beta peptide chain. The invention also provides an antigen binding fragment of the T cell receptors, nucleic acid encoding the antigen binding fragment, a vector containing the nucleic acid, and a host cell containing the vector. The invention further provides a method for preparing a G12V mutation-specific T cell receptor of KRAS or an antigen-binding fragment thereof. The specific T cell receptor and the antigen binding fragment thereof can be used as immune effect activators to stimulate the immune response of the body, thereby generating the action effect of resisting tumors and other diseases.
Owner:INST OF MICROBIOLOGY - CHINESE ACAD OF SCI

Methods and compositions for treating malignant tumors associated with kras mutation

This invention provides methods and compositions for preventing, treating or ameliorating one or more symptoms of a malignant tumor associated with KRAS mutation in a mammal in need thereof, by identifying a tumor cell in the mammal, the tumor cell comprising at least one of: (i) a mutation of the KRAS gene, and (ii) an aberrant expression level of KRAS protein; and administering to the mammal a therapeutically effective amount of a composition comprising one or more RNAi molecules that are active in reducing expression of GST-π.
Owner:NITTO DENKO CORP

Chinese lung adenocarcinoma cell system and application thereof

The invention discloses a Chinese lung adenocarcinoma cell system CAFQ1 and application thereof. The preservation number of the cell system is CCTCC NO: C201774. The cell system has similar protein expression as that of primary tumor tissue, also has chromosome abnormal karyotype and has tumor properties of in-vitro tumor formation properties. By adopting the cell system, properties of lung adenocarcinoma tumor cells can be maintained after continuous in-vitro subculture, and the cell system is applicable to cell materials for researching and developing immunity treatment, diagnosis and medicines for lung adenocarcinoma. The cell system disclosed by the invention comprises ALK: Kras mutations, the two mutations can result normal pulmonary epithelial cell mutations and tumor formation and can promote tumor cell proliferation, therefore, the cell system can be used as powerful tool cells for studying target medicines with ALK; Kras as targets.
Owner:SHANGHAI CHEST HOSPITAL

Preparation method of dendritic cells and application thereof

The invention provides a preparation method of dendritic cells, which belongs to the technical field of tumor treatment. The preparation method comprises the steps of: 1) ligating a fusion gene of human leukocyte antigen (HLA) and KRAS mutation to pCDH or a mammalian expression vector to obtain a recombinant plasmid; 2) transforming the dendritic cells (DC) derived from peripheral blood by electroporation with the recombinant plasmid to obtain the recombinant cells (i-DC); and 3) inducing maturation of the recombinant cells to obtain the mature dendritic cells. In the prior art, antigen-presenting cells are generally loaded by mutating polypeptides, or mutant antigens are transferred into antigen-presenting cells, but the efficiency of both is low, The method converts the fusion gene of KRAS antigen and HLA into the antigen-presenting cells and overexpresses two genes, increases the binding rate of HLA and KRAS mutant antigen, improves the efficiency of presentation, and more easily obtains CTL with specific killing effect.
Owner:焦顺昌 +1

Primer pair and probe combined product, composition, and kit used for detecting KRAS mutation, and applications thereof

The invention belongs to the field of molecular biology, and more specifically relates to a primer pair and probe combined product, a composition, and a kit used for detecting KRAS mutation, and applications thereof. The combined product comprises a LNA fluorescence probe and primers used for detecting different KRAS gene 2th exon mutation types; wherein the forward primer sequence of the primer pair comprises at least one locked nucleic acid, and / or, the LNA fluorescence probe sequence comprises at least one locked nucleic acid. The primer pair and the probe composition is rapid and convenient in detection, is high in specificity, sensitivity, reliability, detection efficiency, and accuracy, low in detection cost, short in detection time, and low in false positive rate. The kit can be used for detecting KRAS mutation, is capable of providing guidance for clinical diagnosis and treatment of KRAS mutation cancer, and is promising in application prospect.
Owner:求臻医学科技(北京)有限公司

New method for KRAS gene mutation detection

A new method for KRAS gene mutation detection by means of loop-mediated isothermal amplification through ligation mediation includes steps of: (1) a ligation reaction for preparing a dumbbell-like template: adding ligation probe, ligase and a KRAS mutation sequence to a buffer liquid of a ligase, and placing the liquid in a PCR device for ligation, thus obtaining the dumbbell-like template througha reaction; (2) denaturing the dumbbell-like template with a loop-mediated isothermal amplification system, adding a stain and Bst enzyme, uniformly mixing the components, and performing a reaction in a real-time fluorescence PCR device, so that the primer can recognize the dumbbell-like template and trigger the loop-mediated isothermal amplification, and monitoring a fluorescent signal in real time. In the invention, the fluorescence analysis method for monitoring the KRAS mutation in practical samples is successfully constructed. The method for detecting the genome DNA extracted from the KRAS mutation samples has advantages of high sensitivity, specificity and anti-interference capability.
Owner:ZUNYI MEDICAL UNIVERSITY
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