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335 results about "Ferritin" patented technology

Ferritin is a universal intracellular protein that stores iron and releases it in a controlled fashion. The protein is produced by almost all living organisms, including algae, bacteria, higher plants, and animals. In humans, it acts as a buffer against iron deficiency and iron overload. Ferritin is found in most tissues as a cytosolic protein, but small amounts are secreted into the serum where it functions as an iron carrier. Plasma ferritin is also an indirect marker of the total amount of iron stored in the body, hence serum ferritin is used as a diagnostic test for iron-deficiency anemia.

Bovine I-type alpha interferon-ferritin fusion protein, and mutant, preparation method and application of bovine I-type alpha interferon-ferritin fusion protein

The invention discloses a bovine I-type alpha interferon-ferritin fusion protein, a mutant thereof, a preparation method and an application of the bovine I-type alpha interferon-ferritin fusion protein. The bovine I-type alpha interferon is fused with a ferritin subunit, and interferon molecules are highly repeatedly and orderly displayed on the surface of a ferritin nanocage by utilizing the self-assembly characteristic of ferritin, so that the expression level, the structural stability and the antiviral activity of the interferon are remarkably improved. The fusion protein is further subjected to single-site or multi-site rational design mutation, and a mutant with significantly improved antiviral activity and stability is obtained. According to the invention, a silkworm or insect cell eukaryotic expression system is adopted to express the fusion protein or the mutant thereof, and the expression system is safe to operate, simple and convenient in procedure, low in cost and extremely beneficial to large-scale industrial production; the prepared fusion protein or mutant nanoparticles have application prospects in preparation of drugs or reagents for preventing or treating bovine viral diseases.
Owner:THE INST OF BIOTECHNOLOGY OF THE CHINESE ACAD OF AGRI SCI

Nile tilapia ferritin, preparation method and application thereof, and bacteriostatic agent

The invention relates to the technical field of aquaculture, in particular to nile tilapia ferritin, a preparation method and application thereof and a bacteriostatic agent. The amino acid sequence of the nile tilapia ferritin is as shown in SEQ ID No.1, and the nile tilapia ferritin inhibits streptococcus agalactiae and / or aeromonas hydrophila. The invention provides Nile tilapia ferritin, and in-vitro experiments prove that the recombinant protein can effectively inhibit proliferation of pathogenic bacteria. A further in-vivo experiment research result shows that the ferritin heavy chain (Nile tilapia ferritin) has important functions of inhibiting pathogenic bacterium proliferation and improving the survival rate of an organism, and plays an important role in immune protection of the organism.
Owner:SOUTH CHINA NORMAL UNIV

Paenibacillus H31 and application thereof

The invention discloses paenibacillus sp. H31, which is preserved in the China Center for Type Culture Collection (CCTCC), the preservation number is CCTCC NO: M 20252669, and the preservation date is November 24, 2025. The invention further discloses a preparation method of the paenibacillus sp. The paenibacillus H31 disclosed by the invention not only has broad-spectrum disease-resistant activity on pathogenic fungi of various plants, but also has a remarkable growth-promoting effect on pepper, so that the paenibacillus H31 can be widely applied to prevention and treatment of agricultural diseases and insect pests, and sustainable development of green agricultural production is promoted. In addition, the paenibacillus H31 also has the effects of hydrolyzing proteinase and cellulose and decomposing ferritin, so that the paenibacillus H31 also can be applied to the scenes of industrial production and the like.
Owner:HAINAN UNIV

Multifunctional nanometer delivery system based on targeted ferritin and preparation method and application thereof

The invention discloses a multifunctional nano delivery system based on targeted ferritin as well as a preparation method and application of the multifunctional nano delivery system. According to the system, traditional Chinese medicine active ingredients, namely neogambogic acid GNA, a photosensitizer Ce6 and ferritin targeting peptide HKN15 are integrated through a self-assembly technology, a synergistic treatment system integrating photodynamic therapy PDT and ferroptosis induction is constructed, and the treatment effect on non-small cell lung cancer NSCLC can be remarkably enhanced. According to the nano delivery system, precise targeting of a tumor site is achieved through the ferritin targeting peptide HKN15, and a double anti-tumor mechanism is formed by utilizing the photodynamic effect of the photosensitizer Ce6 and the ferroptosis induction effect of GNA. The preparation process is based on a molecular self-assembly principle, and has the advantages of high tumor accumulation efficiency, low system toxicity, remarkable tumor inhibition effect and the like, and an innovative solution is provided for precise treatment of the non-small cell lung cancer.
Owner:SHANGHAI UNIV OF MEDICINE & HEALTH SCI

Preparation method and application of recombinant dog lactoferrin and peptide thereof

PendingCN121086065AAntibacterial agentsTransferrinsLactoferricinStaphylococcus intermedius
The invention relates to a preparation method and application of recombinant canine lactoferrin and peptide thereof, aiming at codon preference of host cells, canine lactoferrin genes are optimized, the full length of canine lactoferrin and the lactoferrin peptide are successfully expressed by virtue of an escherichia coli expression system, and the recombinant canine lactoferrin and the peptide thereof are identified by virtue of a minimum inhibitory concentration experiment. It is proved that the canine lactoferrin and the peptide thereof have the inhibiting capacity on pathogenic bacteria such as staphylococcus aureus, salmonella typhimurium and staphylococcus pseudointermedius, and the antibacterial activity MIC of the canine lactoferrin on the staphylococcus aureus, the salmonella typhimurium and the staphylococcus pseudointermedius is 1.5 mg / mL; the antibacterial activity MIC of the dog lactoferrin peptide to staphylococcus aureus is equal to 0.75 mg / mL, and the dog lactoferrin peptide shows high antibacterial ability.
Owner:YALUT FOOD (ANHUI) CO LTD +1

Preparation method and application of macronuclear magnetic ferritin

The invention provides a preparation method and application of macronuclear magnetic ferritin, and the method is as follows: synthetic ferritin is subjected to multiple biomimetic mineralization, large-particle-size nanoparticles are formed in the ferritin, and finally, the macronuclear magnetic ferritin is obtained through separation and purification. The average particle size of the macronuclear magnetic ferritin prepared by the method is not less than 7nm, the magnetocaloric performance is remarkably improved, and the magnetic hyperthermia curative effect taking the magnetic ferritin as a thermal medium can be enhanced.
Owner:INSTITUTE OF GEOLOGY AND GEOPHYSICS CHINESE ACADEMY OF SCIENCES

Porcine delta coronavirus S1 protein nanoparticle vaccine CTDnps and application thereof

The invention provides a porcine deltacoronavirus S1 protein nanoparticle vaccine CTDnps and application thereof, and belongs to the technical field of vaccine preparation. The PDCoV S1 protein C-terminal structural domain nanoparticle vaccine capable of being self-assembled, provided by the invention, comprises ferritin and a PDCoV S1 protein C-terminal structural domain, the amino acid sequence of the ferritin is as shown in SEQ ID NO.1, and the amino acid sequence of the PDCoV S1 protein C-terminal structural domain is as shown in SEQ ID NO.2. The PDCoV S1 protein C-terminal structural domain nanoparticle vaccine capable of being self-assembled comprises the ferritin and the PDCoV S1 protein C-terminal structural domain. The PDCoV S1 protein C-terminal structural domain nanoparticle vaccine (S1CTD-Fer) constructed by the invention can be self-assembled to form ferritin-like cage-shaped nanoparticles, and the hydrodynamic diameter of the cage-shaped nanoparticles is obviously greater than that of natural ferritin nanoparticles. Compared with the S1CTD, the S1CTD-Fel based on the ferritin carrier can obviously enhance the immunogenicity of the S1CTD, can obviously enhance the uptake efficiency of antigen presenting cells, and is high in safety.
Owner:HEILONGJIANG BAYI AGRICULTURAL UNIVERSITY

Method for screening high-yield recombinant human lactoferrin through nucleic acid aptamer-assisted mutagenesis of trichoderma reesei strain and application

PendingCN121783929AFungiTransferrinsRecombinant human lactoferrinMicrobiological Techniques
The invention discloses a method for screening high-yield recombinant human lactoferrin through nucleic acid aptamer-assisted mutagenesis of a trichoderma reesei strain and application, and belongs to the technical field of microorganisms. The nucleic acid aptamer Lac-6a-FAM-BHQ1 capable of changing the fluorescence intensity according to the content of lactoferrin is constructed on the basis of the aptamer Lac-6a, and the nucleic acid aptamer can be used for rapidly selecting a mutant strain for producing high-titer recombinant human lactoferrin. The ARTP mutagenesis technology is combined with a nucleic acid aptamer auxiliary screening system, the mutant strain with the improved recombinant human lactoferrin yield is rapidly obtained from a large number of mutant strains, and the yield reaches 274.57 mg / L and is improved by 24.8% compared with that of an original strain. After the genes 111681 and 62716 are over-expressed in T. reesei, compared with a control strain, the yields of the recombinant human lactoferrin of the recombinant strain are respectively increased by 6.9% and 22.1%.
Owner:JIANGNAN UNIV

Polypeptide fertilizer beneficial to cold resistance of crops and preparation method thereof

The invention discloses a polypeptide fertilizer beneficial to cold resistance of crops and a preparation method thereof, and belongs to the technical field of agricultural fertilizers, the fertilizer is prepared by taking livestock and poultry blood (preferably pig blood) as a raw material, preparing high iron protein peptide through a compound protease hydrolysis process, and matching with a trace element compound, humic acid and a carrier. The preparation process comprises the steps of enzymolysis preparation of the ferritin peptide, fertilizer mixing, granulation, drying and the like. The polypeptide fertilizer disclosed by the invention takes the high-iron protein peptide as a core, the contained small-molecular amino acid polypeptide can enhance the antioxidant enzyme activity of crops at low temperature and reduce malonaldehyde accumulation, the porphyrin iron can promote chlorophyll synthesis and energy metabolism, and the high-iron protein peptide and the porphyrin iron cooperate to remarkably improve the cold resistance of the crops. Meanwhile, by cooperating with trace elements and humic acid, the cold resistance is enhanced, nutrient absorption of crops is promoted, the yield and quality are improved, multiple effects of resisting cold, improving quality, increasing yield and the like are achieved, the raw materials are wide in source, the cost is low, the preparation process is simple, and large-scale production and application are facilitated.
Owner:XIANGYANG WEIEN BIOTECHNOLOGY CO LTD

Varicella-zoster virus nanoparticle protein, and preparation method therefor and use thereof

PCT designated stageWO2026001100A1FibrinogenAntibody mimetics/scaffoldsChickenpoxHerpes zoster virus
A varicella-zoster virus (VZV) nanoparticle protein, and a preparation method therefor and a use thereof. The VZV protein comprises a partial or full sequence of an amino acid sequence of an extracellular region of a VZV gE glycoprotein, with W at position 200 mutation to C and L at position 245 mutation to C in the amino acid sequence of the extracellular region of the VZV gE glycoprotein. By means of the rational optimization design of the amino acid sequence of the VZV gE protein by means of protein genetic engineering, the VZV gE recombinant protein modified with amino acid mutations has increased stability and immunogenicity compared with the VZV gE protein. Moreover, by further designing the protein structure, the VZV gE protein is repeatedly displayed on the surface of ferritin nanoparticles with the desired epitopes exposed, thereby further enhancing immunogenicity.
Owner:UNIVERSALVAX BIOTECHNOLOGIES (TAIZHOU) CO LTD

Double-milk-source fermented milk of double-peak camel milk and brown milk and preparation method of double-milk-source fermented milk

The invention discloses double-milk-source fermented milk of double-peak camel milk and brown milk and a preparation method of the double-milk-source fermented milk, and the preparation method comprises the following steps: mixing raw materials: mixing the double-peak camel milk and the brown milk according to a mass ratio to obtain double-milk-source mixed milk; pretreatment: sequentially carrying out homogenization treatment and heat treatment on the double-milk-source mixed milk; strain inoculation: inoculating the pretreated double-milk-source mixed milk with a fermentation strain, wherein the fermentation strain comprises a core strain and an auxiliary strain; the core strains are lactobacillus and streptococcus thermophilus which have tolerance to antibacterial components of the camel milk, and the core strains contain strains capable of producing exopolysaccharides. Through scientific matching of lactobacillus, streptococcus thermophilus and specific auxiliary strains which have tolerance to antibacterial components of the camel milk, the inhibition effect of natural antibacterial components such as lysozyme and lactoferrin in the camel milk on conventional strains is successfully overcome.
Owner:XINJIANG YIHA DAIRY FARM CO LTD

Cage-like nanocarrier for targeted delivery of sirna, and preparation method therefor and use thereof

A cage-like nanocarrier for targeted delivery of siRNA, and a preparation method therefor and the use thereof. The preparation method comprises: (A) mutating a negatively charged or uncharged amino acid on the inner surface of a ferritin into a positively charged amino acid; and any one or more of the following steps: (B) coupling the N-terminus of the ferritin to a functional peptide having nucleic acid affinity; (C) coupling the N-terminus of the ferritin to a functional peptide promoting lysosomal escape; (D) truncating the E-helix at the C-terminus of the ferritin; (E) coupling the C-terminus of the ferritin to a functional peptide having nucleic acid affinity; and (F) coupling the C-terminus of the ferritin to a functional peptide promoting lysosomal escape. A new nucleic-acid-loaded protein nanocage carrier is constructed by means of modifying a negatively charged inner cavity of ferritin to make same positively charged. By means of electrostatic adsorption, a negatively charged siRNA can be efficiently loaded into a ferritin nanocage, thereby significantly improving the in-vivo and in-vitro delivery stability of siRNA, lysosomal escape functions, and efficacy of targeted therapy.
Owner:INSTITUTE OF BIOPHYSICS CHINESE ACADEMY OF SCIENCES

Pichia pastoris for efficiently synthesizing lactoferrin as well as construction method and application of pichia pastoris

The invention discloses pichia pastoris for efficiently synthesizing lactoferrin as well as a construction method and application of the pichia pastoris, and belongs to the technical field of biosynthesis. The pichia pastoris for efficiently synthesizing the lactoferrin expresses at least one of KAR2, PDI1 and ERO1 in molecular chaperones in a host in an enhanced manner and carries an optimized secretory signal peptide, and the secretory signal peptide is obtained by replacing a leading peptide of alpha-factor with any signal peptide in LacZ, PelB, FLO and alpha-factor. The yield of LF can be effectively increased by enhancing expression of at least one of KAR2, PDI1 and ERO1 molecular chaperones in molecular chaperones in a host; when the lactoferrin expression cassette is integrated into the recombinant pichia pastoris X-33 genome and the copy number is increased to 2-6, the LF yield can be further increased, and when the copy number is 4, the LF yield reaches a peak value.
Owner:SHAANXI UNIV OF SCI & TECH

Self-assembled ferritin nano antigen particle and application thereof in preparation of duck hepatitis A vaccine

The invention discloses a self-assembled ferritin nano antigen particle and application thereof in preparation of a duck hepatitis A vaccine. The VP1 part in the duck hepatitis A virus P1 protein is connected with the N end of a self-assembled ferritin nanoparticle subunit through a connecting sequence to obtain the fusion protein, and the amino acid sequence of the fusion protein is shown as SEQ ID NO.1; in order to improve the expression quantity or expression efficiency of the fusion protein in bombyx mori, a nucleotide sequence of a coding gene of the fusion protein is optimized and modified according to the codon preference of bombyx mori, and an optimized gene sequence with the nucleotide sequence shown as SEQ ID NO.2 is obtained; the fusion protein is subjected to single-site or multi-site mutation, the mutant with obviously improved titer is obtained through screening, and the soluble expression quantity of the mutant is obviously improved. According to the invention, a silkworm or insect cell eukaryotic expression system is used for expressing recombinant protein, and an expression product causes a neutralizing anti-duck hepatitis A virus antibody.
Owner:THE INST OF BIOTECHNOLOGY OF THE CHINESE ACAD OF AGRI SCI

Self-assembling insect ferritin nanoparticles

Disclosed are recombinant insect ferritin nanoparticles that can be used to display two different trimeric antigens at an equal ratio. Also disclosed are nucleic acids encoding the recombinant insect ferritin nanoparticles and methods of producing the recombinant insect ferritin nanoparticles. Methods for eliciting an immune response in a subject are also provided.
Owner:THE GOVERNMENT OF THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY DEPARTMENT OF HEALTH & HUMAN SERVICES

Compound fermentation composition for regulating immunity and intestinal microecology as well as preparation method and application of compound fermentation composition

The invention belongs to the technical field of functional food, and particularly relates to a compound fermentation composition for regulating immunity and intestinal microecology as well as a preparation method and application of the compound fermentation composition. The invention provides a compound fermentation composition for regulating immunity and intestinal microecology. Comprising the following components: blueberry freeze-dried powder, an astragalus extract, a lycium ruthenicum extract, a day lily flower extract, grifola frondosa polysaccharide, schizochytrium limacinum powder, a red yeast rice extract, polygonatum polysaccharide, cordyceps militaris, xylooligosaccharide, yeast beta-glucan, lactoferrin, stevioside, a complex microbial inoculant and a complex enzyme. According to the compound fermentation composition disclosed by the invention, high-efficiency immunoregulation, long-acting intestinal balance and maximum component utilization are realized, and an efficient, stable and applicable solution is provided for regulating immunity and intestinal microecology.
Owner:CHONGQING WANYUANJIA PHARM CO LTD

Use of nutritional composition in promoting bidirectional development of gut and brain via gut-brain axis

PCT designated stageWO2025201398A1Food scienceBiotechnologyBrain development
A use of a nutritional composition in promoting the bidirectional development of the gut and brain via the gut-brain axis. The nutritional composition comprises the following essential components: docosahexaenoic acid, eicosatetraenoic acid, galactooligosaccharide, 1,3-dioleic acid-2-palmitic acid triglyceride, lutein, nucleotide, lactoferrin, casein phosphopeptide, and probiotics. By combining and strengthening multiple functional active components, the gut health and brain cognitive development of the organism can be bidirectionally promoted by means of the microbiota-gut-brain axis. In particular, the present application can promote the regulation of flora in the gut of the organism, increase the abundance of beneficial bacteria, and decrease the abundance of harmful bacteria related to brain development diseases. The content of butyric acid in the gut can be increased, and the contents of acetic acid and propionic acid are decreased to promote brain and cognitive development.
Owner:HEILONGJIANG FEIHE DAIRY CO LTD +4

Trivalent influenza nanoparticle vaccine with broad-spectrum epitope and use thereof

PCT designated stageWO2026085715A1Virus peptidesImmunoglobulins against virusesAdjuvantViral challenge
The present invention belongs to the field of biomedicine. Provided are an influenza nanoparticle vaccine, and a preparation method therefor and the use thereof. A fusion protein containing an influenza virus strain HA protein or a fragment thereof, an antigenic epitope of the influenza virus protein, and ferritin, as an antigen, can induce an immune response effect against an influenza virus, and a vaccine composed of the fusion protein and an MF59 adjuvant can induce a protection effect against viral challenge and have a good cross-protection effect.
Owner:CHENGDU NANOMICROGEN BIOTECH CO LTD

An antimicrobial peptide spray, its preparation method, and its application in the prevention and treatment of peristomal skin infections.

PendingCN122297646ABiofilmCutaneous infections
This invention provides an antimicrobial peptide spray, its preparation method, and its application in the prevention and treatment of peristomal skin infections. The spray comprises, by weight percentage, 0.05%-0.5% of a complex antimicrobial peptide, 0.1%-5% of a moisturizing and repairing film-forming matrix, 0.05%-0.2% of a buffer, 0.8%-1.2% of an isotonic regulator, 0.01%-0.5% of a stabilizer, and 0.005%-0.05% of a metal ion chelating agent, with the balance being water for injection. The complex antimicrobial peptide is composed of bovine lactoferrin antimicrobial peptide, sericin oligopeptide, and buckwheat-derived anti-inflammatory active peptide in a weight ratio of (3-5):(2-3):1. This spray possesses four core functions: broad-spectrum antibacterial activity, inhibition of bacterial biofilm, anti-inflammatory and soothing effects, and skin barrier repair. It is less likely to induce bacterial resistance, does not irritate damaged skin around the stoma, and can effectively prevent and treat peristomal skin infections.
Owner:HAIKOU THIRD PEOPLES HOSPITAL

Tailored nutritional supplements for athletic performance

A personalized supplement formulation system integrates biological data, structured qualitative feedback, and machine learning algorithms to generate individualized nutritional protocols. The system receives biological inputs such as genetic single nucleotide polymorphism (SNP) data, blood biomarkers (e.g., ferritin, vitamin D, B12), lipid profiles, and urinary metabolites. A digital user profile is created by organizing these inputs and calculating derived indices relevant to supplementation. Structured qualitative feedback, including dietary restrictions, perceived wellness, and training goals, is normalized and processed alongside the biological data. A trained machine learning engine analyzes combined inputs to output a tailored supplement formulation specifying ingredient selection, dosage, delivery format, and timing. Instructions are transmitted to a manufacturing system capable of producing the custom formulation. The system supports periodic re-evaluation and iteration based on new biological samples or user-reported feedback, enabling dynamic personalization over time and improving efficacy, compliance, and outcome tracking in athletic and wellness domains.
Owner:OPTIGENIX

Methods for determining the amount of encapsulated and free iron in a sample

PCT designated stageWO2026176335A1ReceptorIron supplement
Methods of increasing systemic iron availability in a human subject using plant-derived ferritin-bound iron are provided. In certain embodiments, ferritin-bound iron is orally administered in an amount effective to produce sustained systemic iron exposure characterized by measurable serum iron levels at least 24 hours after administration. In some embodiments, administration produces a delayed peak serum iron concentration and provides controlled systemic iron delivery relative to conventional iron supplements. In certain embodiments, administration of ferritin-bound iron results in a reduced hepcidin response relative to ferrous sulfate, thereby facilitating improved iron utilization. The ferritin-bound iron may be absorbed through receptor-mediated uptake mechanisms that provide controlled intracellular iron release and sustained systemic availability. The methods are useful for increasing systemic iron availability and for treating or preventing iron deficiency and iron deficiency anemia in human subjects.
Owner:SLOIRON INC

Magnetic-aptamer targeting tumor tissue nano-drug delivery system as well as preparation method and application of magnetic-aptamer targeting tumor tissue nano-drug delivery system

The invention discloses a magnetic-aptamer targeting tumor tissue nano-drug delivery system as well as a preparation method and application thereof, and belongs to the field of medicines. The system comprises a mesoporous ferroferric oxide magnetic core, a polyethyleneimine (PEI) layer coated outside the mesoporous ferroferric oxide magnetic core and an aptamer adsorbed outside the PEI layer, and an autophagy activator can be selectively loaded in the mesoporous core. The preparation method comprises the following steps: sequentially carrying out drug loading, PEI coating and aptamer modification on the mesoporous Fe3O4 nanoparticles. According to the invention, efficient enrichment and endocytosis of tumor tissues are realized through dual effects of magnetic targeting and active targeting of the aptamer; lysosome escape is promoted by using the proton sponge effect of PEI; finally, by virtue of the synergistic effect of iron ions released by degradation of the Fe3O4 nanoparticles and endogenous iron ions released by ferritin autophagy induced by an autophagy activator, ferroptosis of tumor cells is induced through enhanced Fenton-like reaction, so that high-efficiency and low-toxicity targeted therapy is realized.
Owner:YANSHAN UNIV

A multifunctional biomimetic ferritin nanomaterial responsive to matrix metalloproteinases and its preparation method and application

The present invention discloses a multifunctional biomimetic ferritin nanomaterial responsive to matrix metalloproteinases and its preparation method and application. The present invention modifies melittin on the surface of ferritin nanoparticles by a genetic engineering method, connects with a linker containing a matrix metalloproteinase 9 (MMP‑2 / 9) cleavage site, and obtains recombinant ferritin (SEQ ID NO: 6) expressed in Escherichia coli and self-assembled to form enzyme-responsive functionalized biomimetic nanoparticles. The present invention utilizes this method to connect melittin in series on ferritin nanoparticles, significantly reducing the toxicity of melittin, and responding to matrix metalloproteinases in the tumor microenvironment to kill tumor cells; At the same time, intravenous administration of melittin can also be achieved, with good therapeutic effects on both in situ and metastatic tumors.
Owner:SOUTH CHINA UNIV OF TECH

SFTS virus vaccine

Provided herein are compositions, systems, kits, and methods for immunizing a subject against severe fever with thrombocytopenia syndrome virus (SFTS virus) using a composition comprising: i) a plurality of nanoparticles self-assembled from a plurality of fusion proteins comprising a) at least a portion of a ferritin protein, and b) at least a portion of an immunogenic protein comprising at least a portion of the SFTS virus Gn and / or Gc envelope glycoprotein; or ii) a polynucleotide encoding the fusion protein (e.g., an mRNA sequence present in a lipid nanoparticle).
Owner:THE CLEVELAND CLINIC FOUND

Use of a human lactoferricin peptide in anti-inflammatory soothing and skin barrier repair

PendingCN122342696ALactoferricinBiological materials
The application discloses application of a human lactoferricin peptide in anti-inflammatory soothing and skin barrier repair. The application relates to the field of biotechnology, and provides application of a polypeptide or a biological material related to the polypeptide in preparation of a product with anti-inflammatory soothing and / or skin barrier repair functions; the polypeptide is a human lactoferricin peptide derived from a filtrate of a yeast fermentation lysate product, and an amino acid sequence of the polypeptide is shown as SEQ ID NO:1. The polypeptide has intervention potential on inflammation related to dermatitis and eczema, especially on atopic dermatitis. The polypeptide can be applied to the fields of medicines and cosmetics.
Owner:BEIJING CASTAR UNION TECHNOLOGY CO LTD

Lyta-c-gem complex for enhancing anti-tumor effect of gemcitabine and application thereof

The application discloses a LYTAG-Gem compound for enhancing the anti-tumor effect of gemcitabine and application thereof, relates to the technical field of biological medicine, and particularly relates to a gemcitabine (Gem) targeted delivery system based on a lysosome targeting chimera (LYTAC) and application thereof in enhancing the anti-tumor process. 2+ The system is assembled from heavy chain ferritin, Ni 2+ , NTA-PEG5000-DBCO and a targeting ligand TPP-1-N3 in a specific mass percentage, can efficiently load Gem and form a nano compound with a particle size of about 59-79 nm, the system targets tumor cells through heavy chain ferritin, and realizes site-specific release of Gem in cells by means of an endocytosis-lysosome pathway mediated by the LYTAC structure, in-vivo pharmacodynamic experiments show that the LYTAC-Gem compound can significantly inhibit the tumor growth of a KPC pancreatic cancer mouse model, molecular mechanism research further reveals that the LYTAC-Gem compound can down-regulate the expression of PD-L1 protein in tumor tissues, and it is indicated that the LYTAC-Gem compound has the potential to activate an anti-tumor immune response, and the application provides a novel targeted delivery strategy for overcoming the toxic side effects and tumor drug resistance of gemcitabine.
Owner:THE AFFILIATED SIR RUN RUN SHAW HOSPITAL OF SCHOOL OF MEDICINE ZHEJIANG UNIV +1

A culture kit for nk cells, a culture method thereof, and an application thereof

This invention discloses a NK cell culture kit, its culture method, and its application. The kit includes an amplification medium, a high-efficiency induction medium, an NK-A coating solution, an NK-B mixture, and an NK-C mixture. The amplification medium contains basal medium, NAD+, human serum albumin, transferrin, β-glucan, glutathione, β-mercaptoethanol, and linoleic acid. The high-efficiency induction medium, in addition to the amplification medium components, contains soybean peptides, nicotinamide, inulin, and N-acetyl-L-cysteine. The NK-A coating solution contains heparin sodium, monoclonal antibodies, and antibodies. The NK-B mixture contains Inbakicept, IL-2, and IL-15. The NK-C mixture contains linolenic acid, IL-2, and IL-18. The Inbakicept factor in the kit can activate NK cells and enhance their cytotoxicity; linolenic acid can inhibit T cell proliferation, increase NK cell purity, and enhance cell efficacy.
Owner:GUANGDONG XIANKANGDA BIOTECH CO LTD

A pet oral care spray and method of making the same

PendingCN122351130AMouth careActive protein
This invention relates to the field of pet care product technology, and discloses a pet oral care spray and its preparation method. The preparation method employs a low-temperature gradient stepwise dissolution process: glucose oxidase is pre-dissolved at low temperature to obtain pre-solution A; bovine colostrum powder and lactoferrin are dissolved at low temperature to obtain protein pre-solution B; honey, folic acid, and vitamin D3 are dissolved at room temperature to obtain excipient pre-solution C; lysozyme is added to protein pre-solution B and stirred to dissolve; then pre-solution A and excipient pre-solution C are combined sequentially, the pH is adjusted, and purified water is added to make up the volume; the mixture is filtered through a microporous membrane for sterilization, and then filled and sealed under inert gas protection. This preparation method effectively protects the biological activity of each active protein and enzyme, achieving a long shelf life without the need for additional chemical preservatives. The resulting spray does not contain irritating ingredients such as alcohol and menthol, and is suitable for improving stomatitis, inhibiting plaque and tartar, and alleviating halitosis in pets of all ages and breeds.

A nanoantibody specifically binding to FAdV-4, a fusion protein and its application

The present invention discloses a nanobody, fusion protein and application that specifically binds to FAdV-4, and belongs to the technical field of veterinary biological products. Based on the phage nanobody display library of FAdV-4, the present invention screened specific nanoantibodies against FAdV-4 fiber protein 2 (Fiber 2), and used the self-assembly technology of ferritin to genetically engineer the nanoantibodies to express and prepare the anti-FAdV-4 polymerized nanoantibody Fenobody-75. The antibody is simple to express and purify, has stable properties and low production cost. The antiviral effect was analyzed by in vitro and in vivo tests. The results show that the Fenobody-75 of the present invention is highly safe and has a good protective effect against FAdV-4 infection. Therefore, Fenobody-75 has a good market application prospect as a biological preparation for resisting FAdV-4 infection in poultry.
Owner:NORTHWEST A & F UNIV

Sheep milk probiotic formula for regulating intestinal flora and preparation method thereof

This application discloses a sheep milk probiotic formula milk powder that can regulate intestinal flora and its preparation method. By weight, it contains the following raw material components: 600-700 parts sheep milk base, 5-15 parts compound probiotic powder, 30-60 parts prebiotic composition, 10-30 parts functional additives, and 5-20 parts nutritional fortifiers. This compound formula combines multiple probiotics and optimizes the strain ratio to achieve a synergistic colonization effect. The probiotics are prepared using a freeze-drying process, effectively improving problems caused by flora imbalance. Simultaneously, multiple compound prebiotics provide nutritional support for the proliferation of beneficial bacteria, synergistically enhancing the intestinal regulatory effect. Added functional components such as lactoferrin, chitosan, β-glucan, and poria cocos polysaccharide make it suitable for long-term conditioning consumption by sub-healthy individuals and those with weak digestive systems. The raw sheep milk undergoes vacuum distillation to remove the muttony odor. A process of wet powdering followed by aseptic dry mixing of probiotics is used, resulting in a more stable overall quality of the finished product.
Owner:INNER MONGOLIA MENGYITE DAIRY CO LTD