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42 results about "Immunomodulin" patented technology

Method for producing trametes versicolor immunomodulatory protein by virtue of pichia pastoris expression system

The invention relates to a method for producing a trametes versicolor immunomodulatory protein by virtue of a pichia pastoris expression system. Problems about the preparation of trametes versicolor immunomodulatory proteins are effectively solved. The method comprises the following steps of synthesizing a nucleotide sequence SEQ ID NO.1 of a trametes versicolor immunomodulatory protein FIP-tvc according to a codon usage bias of pichia pastoris; constructing a recombinant expression plasmid X-FIP-tvc by virtue of the trametes versicolor immunomodulatory protein FIP-tvc synthesized by restriction enzyme digestion and an expression plasmid vector X, linearizing the recombinant expression plasmid X-FIP-tvc by virtue of a restriction enzyme, then transforming a competent cell of pichia pastoris GS115, screening a constitutive positive transformant or inducible positive transformant by virtue of an antibiotic-containing plate and PCR (Polymerase Chain Reaction) method, selecting an inducible high-level rFIP-tvc secretion expression pichia pastoris recombinant strain, performing fermental cultivation or induction expression for 3 to 7 days, precipitating fermentation supernatant with ammonium sulfate, performing dialysis on precipitates for 24 to 48 hours, performing affinity exchange chromatography with a chromatographic column, and performing drying to obtain solid powder of the trametes versicolor immunomodulatory protein FIP-tvc. The method is low in cost, short in cycle, easy to implement technically, suitable for industrial production and high in purity.
Owner:HENAN ACAD OF SCI INST OF BIOLOGY LIABILITY

Immunomodulatory protein mutant and nucleotide sequence thereof, recombinant plasmid vector, engineering bacterium, construction method and application

The invention is applicable to the technical field of gene engineering. The invention provides an immunomodulatory protein mutant and a nucleotide sequence thereof, a recombinant plasmid vector, an engineering bacterium, a construction method and application. The amino acid sequence of the immunomodulatory protein mutant is obtained by mutating phenylalanine at the 8th site into tryptophan on thebasis of the amino acid sequence of immunomodulatory protein LZ-8 shown as SEQ ID NO.1, and the mutated amino acid sequence is shown as SEQ ID NO.2. According to the invention, the thermal stability of the recombinant LZ-8 and the stability of the recombinant LZ-8 patent medicine are further improved on the basis that the immunomodulatory activity and the anti-tumor activity are basically unchanged; on one hand, the heat stability of the immunomodulatory protein mutant is greatly improved, and compared with wild type LZ-8, the F8W phase transition temperature Tm is increased by 1.86 DEG C, andthe phase transition enthalpy value delta H is increased by 39.19 kJ/mol; and on the other hand, the immunomodulatory protein mutant has immunomodulatory activity and anti-tumor activity consistent with those of wild type LZ-8, and has higher application and development value compared with the prior art.
Owner:JILIN UNIV

Cancer health caring food combination determining method and non-instantaneous computer readable storage medium

The subjects of the invention are a cancer health caring food combination determining method and a non-instantaneous computer readable storage medium. The invention discloses the cancer health caringfood combination determining method and the non-instantaneous computer readable storage medium for utilization of persons with cancers as possible. The cancer health caring food combination determining method comprises the following steps of: a nucleic acid detecting step, detecting the nucleic acid in a biological sample, and determining a possibility of affecting the cancer according to the detecting result of the nucleic acid; a cancer detecting step, detecting a tumor index and at least one health index in a blood sample, and determining a fact that the cancer is not affected according toa detecting result of a tumor index; and a cancer health caring food combination determining step, determining the cancer health caring food combination according to the cancer affecting possibility in the nucleic acid detecting step and at least one health index in the cancer detecting step, wherein the cancer health caring food combination comprises multiple kinds of health caring food, and at least one kind of health caring food is an immunomodulatory protein or a compound of the immunomodulatory protein.
Owner:MULTIPLE FORTUNE HLDG LTD
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