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51 results about "Perforin" patented technology

Perforin-1 is a protein that in humans is encoded by the PRF1 gene and the Prf1 gene in mice.

Efficient amplification method of TILs serving as sources of cancerous pleural effusion

The invention aims to provide an efficient amplification method of TILs serving as sources of cancerous pleural effusion. The TILs prepared with the method have the advantages of being high in multiplication speed, large in number, high in cell activity and the like. The method is mainly characterized in that by utilizing a cultivation bottle coated by laminin protein and fibronectin, the TILs are cultivated. The adsorption effect of the two kinds of protein can make cells in half-adherence state, therefore, the cells are favorable for being stimulated by various factors, and the two kinds of protein has the multiplication promoting effect on the TILs; by using a resistant OX-40 monoclone antibody, co-stimulatory signals of CD3+CD8+T cell subgroups in the TILs can be stimulated, cell activation is promoted, the expression of cell perforin and granular enzyme is improved, and the killing capacity of the TILs is enhanced. So far, the study report that the laminin protein, the fibronectin and the resistant OX-40 monoclone antibody are combined and used for preparing the TILs has not been given, and the method for increasing the cell number and improving the killing activity by adding the three factors in preparation of the TILs is put forward for the first time.
Owner:青岛麦迪赛斯医疗技术有限公司

Immune cell and application thereof

The invention relates to the technical field of biological cells, in particular to an immune cell and application thereof. A chimeric antigen receptor is expressed on the cytomembrane of the immune cell, and in addition, an immune checkpoint antibody protein fused with a cytokine receptor is also expressed on the cytomembrane. The expression CAR cell of the immune checkpoint antibody protein fused with the cytokine receptor is also expressed on the cytomembrane; through the immune checkpoint antibody protein which is fused with the cytokine receptor and is expressed on the immune cytomembrane, two negative feedback approaches PD-1 and CTLA-4 are blocked so as to weaken negative regulation and control of a tumor microenvironment for the immune cell, reduce exhaustion of the immune cell, enhance the tumor killing function of the immune cell and reduce inhibition of the immune cell by the tumor microenvironment; and in addition, through binding with the cytokine receptor, corresponding JAK and STAT signal channels are activated, and the cells are induced to secrete various active substances, including IFN-[gamma], perforin, granzyme and the like so as to inhibit growth of tumor cells, enhance an anti-tumor capacity, reduce the exhaustion and reduce the inhibition of the immune cell by the tumor microenvironment.
Owner:SHENZHEN FIRST CONDOR BIOSCIENCE CO LTD

Perforin inhibiting benzenesulfonamide compounds, preparation and uses thereof

Compounds of formula (1a) and pharmaceutically acceptable salts, solvates, and hydrates thereof and related methods of modulatin perforin activity on a cell: wherein Ring A is selected from a 6-10 membered aryl, 5-6 membered cycloalkyi, 5-6 membered heteroaryl or 5-6 membered heterocyclyl, wherein the heteroaryl and heterocyclyl rings comprise at least one heteroatom selected from N, O or S; and wherein the aryl, cycloalkyi, heteroaryl or heterocyclyl rings are optionally substituted with 1 to 3 substituents selected from halo, nitro, —C1-Cealkyl, —C1-Ceaminoalkyl, —C1-C6hydroxyalkyl, -haloC1-C6alkyl, —C1-C6alkoxyl, -haloC1—C<aIkoxyl, heteroaryl, aryl, hydroxyl, —C(0)Ci-C6alkyl, —OC(0)Ci-C6alkyl, —CH2OC(O)CrC6alkyl, —C(O)OC1, —C6alkyI, —NHC(O)C1, —C6alkyl, —NHS(O)2C1-C6alkyl, —S(O)2C1-C6alkyl, —S(O)2NH2, and —C(O)NJJ; Ring B is a 6-10 membered arylene or a 5-6 membered heteroarylene comprising at least one heteroatom selected from N, 0 or S; and wherein the aryl or heteroaryl is optionally, substituted with one or more substituents selected from —NJJ, —OJ, halo, C1-C6alkyl, -haloC1—C6alkyl, —C1-C6alkoxy, -haloC1-C6alkoxyl, and —C(0)NJJ; Ring C is selected from a 5-10 membered heteroarylene or a 5-10 membered heterocyclene, each comprising at least one heteroatom selected from N, S and O; Ring D is an optionally substituted benzofused 9-11 membered heterocyclyl or optionally substituted ben2ofused 9-11 membered heteroaryl comprising at least one heteroatom selected from N or O; L is a linker selected from branched and unbranched C1-C4 alkylene, —S(0)2-NH—, —C(0)-NH—, —NH—C(0)-NH—, —S(0)2-NH—C(0)-NH—, —S(0)2-NH—C(0)- and —CH═CH—; wherein Rings B and C, and Rings C and D, are connected to each other via a C—C bond at any of the available C atoms on each respective ring; and J in each occurrence is independently selected from H, optionally substituted C1-C6alkyl or optionally substituted haloC1-C6alkyl.
Owner:PETER MACCALLUM CANCER INST

Method for efficiently amplifying NK and transfecting NKG2D activated NK cells in vitro

The invention belongs to the field of biological medicine and the technical field of cell therapy, and particularly relates to a method for efficiently amplifying NK and transfecting NKG2D activated NK cells in vitro. The method comprises the following specific steps: optimizing an NK cell in-vitro efficient amplification technology and detecting NK immune biological characteristics; the method comprises the following steps: detecting mRNA expression of NKG2D ligands MICA and ULBP 1, 2 and 3 in tumor cells and tumor tissues by using an RT-PCR method; performing construction of an NKG2D cloning vector; performing construction of an NKG2D eukaryotic expression vector; expressing and identifying the eukaryotic expression vector in CHO cells; the eukaryotic expression vector transfects NK cells and influences the biological functions of the NK cells. The invention provides a method for constructing a pEGFP-N1/NKG2D eukaryotic fluorescent expression vector by using a genetic engineering technology, transfecting NK cells with the constructed pEGFP-N1/NKG2D plasmids, detecting the proliferation situation of the NK cells before and after NKG2D transfection and the killing effect on tumor cell lines by using an MTT method, detecting the mRNA expression level of related killing molecules IL-2, TNF-a, Perforin and TWEAK by using an RT-PCR method. The method for efficiently amplifying the NK in vitro and transfecting the NKG2D activated NK cells, which is a new thought, is provided for tumor treatment.
Owner:浙江圣希澳医学科技有限公司
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