94 results about "Natural antibody" patented technology

The present invention refers to synthetic antibody molecules which comprise domains from naturally occuring antibodies, e.g. domains derivable from IgG, preferably of human origin, in a novel arrangement. Single chain molecules are provided which are suitable for expression in micro-organisms in their active conformation, which single chain molecules generally comprise a VL domain, a CL domain, and a VH domain, a CH1 domain, linked by a linker arranged between VUCL and VH/CH1. Accordingly, these antibody molecules can be termed single chain Fabs (scFabs). These antibody molecules are single chain proteins, which can also be associated to dimers, including heteromeric antibodies, wherein at least two single chain antibody molecules are associated.

Described and claimed herein are combinatorial synthetic Fab libraries displayed on a phage pIX protein. The libraries were built on scaffolds representing the most frequently used genes in human antibodies, which were diversified to mirror the variability of natural antibodies. After selection using a diverse panel of proteins, numerous specific and high-affinity Fabs were isolated. By a process called in-line maturation the affinity of some antibodies was improved up to one hundred-fold yielding low pM binders suitable for in vivo use. This work thus demonstrates the feasibility of displaying complex Fab libraries as pIX-fusion proteins for antibody discovery and lays the foundations for studies on the structure-function relationship of antibodies.

A method of treating a pathological syndrome includes administration of an activated form of ultra-low doses of antibodies to an antigen, wherein said activated form is obtained by repeated consecutive dilution combined with external impact, and the antigen is a substance or a pharmaceutical agent exerting influence upon the mechanisms of formation of this particular pathological syndrome. Pharmaceutical agent for treating a pathological syndrome contains activated form of ultra-low doses of monoclonal, polyclonal or natural antibodies to an antigen, wherein said activated form is prepared by means of repeated consecutive dilution and external treatment, predominantly based on homeopathic technology, and said antigen is a substance or a drug acting as a direct cause of the pathological syndrome or involved in regulation of mechanisms of its formation. At that, activated forms of ultra-low doses of antibodies are raised against antigens of exogenous or endogenous origin, against autologous antigens, fetal antigens; anti-idiotypic antibodies are used too.

This invention relates to whole antibodies of neutral isotype having specificity for E-selectin, process for their preparation (using vectors), pharmaceutical compositions containing them, and their use in therapy and diagnosis. Said antibodies are variants of natural antibodies altered in the Fc region, especially in the CH2 domain, so that the interactions with antibodies Fc receptors and complement are very low.

The invention concerns a pharmaceutical composition comprising, as the active ingredient, human natural antibodies of the IgG isotype, that neutralize the activity of a human cytokine selected from VEGF, IFNα, IL-4, TNFα and TGFβ, the said neutralizing antibodies inhibiting at least 50% of the maximum biological activity induced by an amount ranging from 0.006 ng to 0.05 ng of the said cytokine in vitro.

A medicament based on antibodies contains an activated form of ultra-low doses of monoclonal, polyclonal, or natural antibodies to endothelial nitric oxide synthase (NO synthase), the activated form being prepared by multiple consecutive dilutions and exposure to external factors, preferably according to the homeopathic technology. A method of treating erectile dysfunctions and vegetative disturbances of male climax by regulating the level of cyclic guanosine monophosphate (cGMP) in the cavernous bodies on sexual stimulation, the method being characterized by the use of activated forms of ultra-low doses of antibodies to the entire molecule of the endothelial NO synthase or to its polypeptide fragments, activated forms being prepared by multiple consecutive dilutions and exposure to external factors.

This invention provides a composition comprising an effective amount of glucan capable of enhancing efficacy of antibodies. This invention further provides the above compositions and a pharmaceutically acceptable carrier. This invention also provides a method for treating a subject with cancer comprising administrating the above-described composition to the subject. This invention provides a composition comprising effective amount of glucan capable of enhancing efficacy of vaccines. This invention also provides a method of treating a subject comprising administrating the above pharmaceutical composition to the subject. This invention provides a composition comprising effective amount of glucan capable of enhancing efficacy of natural antibodies. This invention provides a composition comprising effective amount of glucan capable of enhancing host immunity. This invention also provides a composition comprising effective amount of glucan capable of enhancing the action of an agent in preventing tissue rejection.

The invention discloses a magnetic molecularly imprinted polymer-fluorescence analysis method, relates to a rapid detection of pesticides, and aims to solve the problem of difficulty in preparation of small molecular natural antibody in the conventional quick detection method. The method comprises the following steps: 1, preparing polyethylene glycol and oleic acid-coated magnetic nanoparticles; 2, preparing a magnetic molecularly imprinted polymer of triazine pesticides; 3, determining a fluorescence signal by using a fluorescence spectrophotometer. The common natural antibody which is difficult to prepare in the normal quick detection method is substituted by using a magnetic molecularly imprinted biomimetric material; quick detection of a non-immune method of the triazinemicromoleuclar pesticides is technically realized through competitive combination of the pesticide molecules and the fluorescence probe on the magnetic imprinting. The method is used for quickly detecting the residue of the triazine pesticides.

The principle of the present invention is the use of an activated form of ultra-low doses of monoclonal, polyclonal, or natural antibodies to cytokines implicated in the course of inflammation, including autoimmune inflammation, the activated form being prepared by multiple consecutive dilutions and exposure to external factors, preferably according to the homeopathic technology. It is possible to use a mixture of activated forms of antibodies to various cytokines involved in the course of the inflammatory process. In addition, employed as a medicament for correcting pathologic immune reactions based on antibodies to the tumor necrosis factor alpha (TNF-α) can be an activated form of antibodies to TNF-α obtained by multiple consecutive dilutions and exposure to external factors; activation preferably being performed in accordance with the homeopathic technology, and the forms preferably being applied in a mixture of various, predominantly centesimal, homeopathic dilutions.

The invention discloses the application of an IL-11 monoclonal antibody in inhabiting a PI3K/Akt signal channel. The concentration of the IL-11 monoclonal antibody is 8 mug/mL, and the dosage of the IL-11 monoclonal antibody is 10 mug. The safe and efficient PI3K/Akt signal channel inhibitor, namely the IL-11 monoclonal antibody is found, and can be specifically combined with IL-11 secreted by cells to induct PTEN transcription, up-regulate PTEN expression and inhibit the expression of AKT on the downstream portion of the PI3K/Akt signal channel, and then the whole signal channel is inhibited. The inhibitor is a natural antibody, so that toxic and side effects are reduced and safety and efficiency are high.

A process is provided for the production of an antibody or a fragment or functionalized fragment thereof using a transformed lower eukaryotic host containing an example DNA sequence encoding the antibody or (functionalized) fragment thereof, wherein the antibody or (functionalized) fragment thereof is derived from a heavy chain immunoglobulin of Camelidae and is devoid of light chains, and wherein the lower eukaryotic host is a mould, preferably belonging to the genera Aspergillus or Trichoderma, or a yeast, preferably belonging to the yeast genera Saccharomyces, Kluyveromyces, Hansenula, or Pichia. The heavy chain fragment can contain at least the whole variable domain. A complementary determining region (CDR) different from the CDR belonging to the natural antibody ex Camelidae can be grafted on the framework of the variable domain of the heavy chain immunoglobulin. The catalytic antibodies can be raised in Camelidae against transition state molecules. The functionalized antibody or fragment thereof can comprise a fusion protein of both a heavy chain immunoglobulin from Camelidae or a fragment thereof and another polypeptide, e.g., an enzyme, preferably an oxido-reductase. Also provided are new products obtainable by a process as described, and compositions containing a product produced by a process as described, which composition may contain a new product as provided.

The invention provides natural IgM antibody inhibitors that may be used to treat various inflammatory diseases or disorders.

The present invention is a C-reactive protein imprinted polymer film. The C-reactive protein antibody imprinted polymer film comprises a plurality of imprinted nanocavities with unified orientation and distribution formed by removing a plurality of C-reactive proteins from a polymer film. Its ability to capture the target proteins can achieve 99% compared with the natural antibodies. The present invention further provides a C-reactive protein microchip system formed by the dynamic capacitance sensing method with the above imprinted polymer film. The C-reactive protein microchip system comprises a body having a first chamber and a second chamber, and a detector.

The invention discloses a staphylococcal enterotoxin micromolecule antibody and its preparation method and use. The staphylococcal enterotoxin micromolecule antibody has an amino acid sequence shown in the formula of SEQ ID No.1 in the sequence table. The preparation method comprises the following steps of designing and constructing eukaryotic mono-promoter co-expression vectors of staphylococcal enterotoxin monoclonal antibody light chain and heavy chain variable region genes, introducing cysteine residues to C- ends of the light chain and the heavy chain to form interchain disulfide bonds by an intracellular peptide fragment self-assembling principle, and simulating antigen binding domain spatial conformation of natural antibodies to obtain high-efficiency expression stable-secretion mammal cell line and the high-singularity strong-affinity micromolecule antibody. The staphylococcal enterotoxin micromolecule antibody can be used for staphylococcal enterotoxin detection, cell indirect immunofluorescence detection and flow cytometry detection.

Provided are an anti-PD-L1/anti-PD-1 natural antibody structure-like heterodimeric bispecific antibody and a preparation thereof. In particular, provided are a highly stable heterodimeric anti-PD-L1/anti-PD-1 bispecific antibody with characteristics of a natural IgG and without mismatches heavy chain-light chain, and a preparation thereof. The bispecific antibody can bind to both target molecules and is more effective in treating a complex disease.

A medicament based on antibodies contains an activated form of ultra-low doses of monoclonal, polyclonal, or natural antibodies to the prostate-specific antigen, the activated form being prepared by multiple consecutive dilutions and exposure to external factors, preferably according to homeopathic technology. In order to obtain the antibodies, the prostate-specific antigen isolated from the prostatic tissues of cattle or prepared synthetically is employed; a mixture of various, mostly centesimal, homeopathic dilutions is used. The method of treating diseases of the urogenital sphere consists in using activated forms of ultra-low doses of antibodies to prostate-specific antigen prepared by multiple consecutive dilutions and exposure to external factors.

The invention relataes to novel evolutionary immunoglobulin binding molecules, as well as their preparation methods and applications. The invention discloses separated evolutionary immunoglobulin binding molecules, which are proteins with amino acid sequences as shown by SEQ ID NO : 1, or conservative variant proteins with immunoglobulin binding activity. The invention also discloses the gene encoding, genetic engineering preparation methods and applications of immunoglobulin binding molecules. The disclosed immunoglobulin molecule broad-spectrum combined with various immuneglobulin shows high immunoglobulin whole molecule binding activity, and can be used in large-scale purification of genetic engineering antibodies, purification of natural antibodies and monoclonal antibodies, enzyme-linked immunosorbent assay, and immuno-chromatography and immunohistochemical methods for immune antibody detection and diagnosis.

The invention relates to a rhesus monkey erythrocyte adsorber, belonging to the field of medicine science. According to the rhesus monkey erythrocyte adsorber, rhesus monkey erythrocytes replace human Rh positive O erythrocytes, the rhesus monkey erythrocytes are washed by 4 DEG C normal saline and 37 DEG C normal saline, so that immune antibodies or natural antibody attaching to the surfaces of the erythrocytes can be removed, after antigenicity detection, cell sediment is added into a cylindrical adsorber made of a material with high biocompatibility till 4/5 of the volume is occupied, then 3.5% of mannitol erythrocyte preserving fluid is added, so that the concentration of the erythrocyte achieves 80%, shaking is carried out gently for uniform mixing, the opening is sealed, and the product is stored at 4 DEG C for regular use, wherein a screen is arranged at the opening of a purifier, so that a line of defense for preventing cell debris from being filtered out is formed, after the plasma is filtered, Rh antibodies are combined with Rh positive rhesus monkey erythrocytes to form a fixed compound, the broken erythrocyte debris and the macromolecular compound combined with the broken erythrocyte debris are blocked by the screen of the purifier, and the plasma with morbid substance removed is filtered by the purifier and then conveyed back, so that the purpose of treating blood-group-incompatible haemolytic diseases is achieved by eliminating Rh antibodies of the plasma.

The human-derived anti-Hepatitis A virus genetically engineered antibody produced by CHO cells includes two strains of human-derived anti-Hepatitis A virus neutralizing genetically engineered antibody CHO (Chinese hamster ovary cell) production cell line and the production of human-derived anti-Hepatitis A virus neutralizing for prevention and treatment Genetically engineered antibody preparations. Its product features are fully human antibodies IgG1λ and IgG1κ derived from phage human antibody library screening and human IgG Fc gene recombination in Chinese hamster ovary (CHO) cells stably expressing cells, named ChHAIgG16 and ChHAIgG78 respectively. The molecular weight is about 150kd. The cocktail-type antibody preparation composed of ChHAIgG16 and ChHAIgG78 mixed at a ratio of 3:1 is named HAMaxTMM. Utilizing its functional characteristics of highly neutralizing hepatitis A virus infection and the molecular structure characteristics of whole antibodies similar to natural antibody molecules, it is expected to replace blood product gamma globulin in clinical practice for the prevention and treatment of hepatitis A caused by hepatitis A virus infection .