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53 results about "Filaggrin" patented technology

Filaggrin (filament aggregating protein) is a filament-associated protein that binds to keratin fibers in epithelial cells. Ten to twelve filaggrin units are post-translationally hydrolyzed from a large profilaggrin precursor protein during terminal differentiation of epidermal cells. In humans, profilaggrin is encoded by the FLG gene, which is part of the S100 fused-type protein (SFTP) family within the epidermal differentiation complex on chromosome 1q21.

Cyclic chimeric citrullinated peptide antigen and application thereof

The invention discloses a cyclic chimeric citrullinated peptide antigen and an application thereof. The preparation of the cyclic chimeric citrullinated peptide antigen comprises the following steps: firstly connecting and jogging three small-molecular antigen peptides, namely a citrullinated peptide1, a citrullinated peptide 2 and a citrullinated peptide 3 derived from a silk polymerizing protein/an intermediate filament protein, and then synthetizing a cyclic polypeptide with a similar protein beta-corner structure by forming a disulfide bond through two cysteines inserted into the end N and the end C of a chimeric peptide. The cyclic chimeric citrullinated peptide antigen coats a solid-phase vector to prepare an indirect enzyme linked immunosorbent assay kit used for detecting the hypotype of multiple anti-citrullinated protein antibodies contained in RA (Rheumatoid Arthritis) serum. The cyclic chimeric citrullinated peptide antigen and the ELISA kit thereof which are disclosed by the invention have the advantages of simple preparation and experimental operation process, good result repeatability, qualification or quantification and wide clinical application and scientific research value and are outstandingly enhanced in detection sensibility and diagnosis value on RA compared with an international similar kit.
Owner:陈仁奋

Recombinant lentivirus-based vector for implementing RNA (Ribose Nucleic Acid) interference aiming at FLG (filaggrin) gene and preparation of recombinant lentivirus-based vector

The invention relates to a recombinant lentivirus-based vector for implementing the RNA (Ribose Nucleic Acid) interference aiming at an FLG (filaggrin) gene and preparation of the recombinant lentivirus-based vector. A lentivirus-based vector of shRNA (shorthairpin RNA) aiming at the FLG gene is constructed through experiments; a synthesized DNA fragment aiming at the ShRNA is mediated by the lentivirus-based vector; 293T cells are subjected to co-transfection together by the lentivirus-based vector and two vectors pHelper1.0 and pHelper2.0 to carry out culture; and after the recombinant lentivirus-based vector is obtained, target cells are subjected to transfection so as to implement the RNA interference aiming at the FLG gene. The adopted self-inactivated third-generation lentivirus-based vector has the advantages of safety, reliability, capability of infecting nondividing cells, long-term expression of integrating a target gene to a target cell gene, small immune response and the like and is an ideal vector. The lentivirus-based vector disclosed by the invention has the interference effect reaching 75 to 95 percent on normal skin cells HACAT of people, and thus, the recombinant lentivirus-based vector disclosed by the invention lays a good experimental foundation for further research related to the FLG gene and can be widely used for the in-vivo gene therapy and the gene functional research.
Owner:党宁宁
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