42 results about "Passive Immunotherapy" patented technology

Human monoclonal antibodies and fragments thereof which bind, neutralize and provide passive immunotherapy to respiratory syncytial virus (RSV) antigenic subgroups A and B are disclosed. Also disclosed are diagnostic and immunotherapeutic methods of using the monoclonal antibodies as well as cell line producing the monoclonal antibodies.

The invention relates to immunogenic polysaccharide-protein conjugates comprising a capsular polysaccharide (CP) from Streptococcus agalactiae, commonly referred to as group B streptococcus (GBS), and a carrier protein, wherein the CP is selected from the group consisting of serotypes Ia, Ib, II, III, IV, V, VI, VII, VIII, and IX, and wherein the CP has a sialic acid level of greater than about 60%. The invention also relates to methods of making the conjugates and immunogenic compositions comprising the conjugates. The invention also relates to immunogenic compositions comprising polysaccharide-protein conjugates, wherein the conjugates comprise a CP from GBS serotype IV and at least one additional serotype. The invention further relates to methods for inducing an immune response in subjects against GBS and/or for reducing or preventing invasive GBS disease in subjects using the compositions disclosed herein. The resulting antibodies can be used to treat or prevent GBS infection via passive immunotherapy.

Juvenile-onset recurrent respiratory papillomatosis is treated using active vaccination or passive immune therapy of neutralizing antibodies against HPV L2 neutralizing epitopes.

The invention discloses a completely humanized neutralizing antibody for anti-rabies viruses. The amino acid sequence of a heavy chain of the antibody is shown in sequence table SEQ ID NO1, the amino acid sequence of a light chain of the antibody is shown in sequence table SEQ ID NO5, the complementary determining region (CDR) of a variable region of the heavy chain of the antibody is shown as follows: CDR1: SEQIDNO2, CDR2:SEQIDNO3 and CDR3: SEQIDNO4, and the complementary determining region (CDR) of a variable region of the light chain of the antibody is shown as follows: CDR1:SEQIDNO6, CDR2:SEQIDNO7, and CDR3: SEQIDNO8. The beneficial effects of the completely humanized neutralizing antibody are that: the completely humanized neutralizing antibody disclosed by the invention ahs the advantages of being completely humanized, good in specificity, high in affinity, good in neutralizing effect, and low in price, can be used as a biological engineering antibody drug to quickly establish immune protection force against rabies virus, can be used for passive immunotherapy of acute infection, and also can be used for preparing detection reagents for detecting the rabies virus, finding effective neutralization antigen epitope and developing recombinant proteins and subunit vaccines for the rabies virus.

The present invention provides a cytotoxic T-cell (cytotoxic T lymphocyte, abbreviated hereinafter as CTL) epitope peptide specific to the Epstein-Barr virus (described hereinafter as EBV), a vaccinefor treating or preventing EBV infection or EBV-positive cancer using this peptide, a passive immunotherapeutic agent for EBV, and a method for assaying CTL specific to EBV. The present invention alsoprovides an HLA-A*24:02-restricted epitope peptide comprising an IYTEVRELV sequence (SEQ ID NO: 43) from a cytoskeleton-associated protein (cytoskeleton-associated protein 4: CKAP4 hereinafter, alsoknown as: CLIMP-63, ERGIC-63, P63). The peptide-specific cytotoxic T-cells (CTL hereinafter) can attack malignant tumor cells that express a high level of CKAP4.

Mutant ras oncogene peptides may induce specific anti-ras cellular immune responses in vaccinated patients. Moreover, a human CD8⁺ CTL epitope(s) reflecting a specific point mutation in the K-ras oncogene at codon 12 was identified. The mutant ras peptide has implications for both active and passive immunotherapies in selected carcinoma patients. A nested 10-mer peptide was identified [i.e., ras5-14(Asp12)], which was shown to bind to HLA-A2 and display specific functional capacity for expansion of the in vivo-primed CD8⁺ CTL precursors.

It is described a Clostridium difficile (C-difficile) toxins A and/or B as a target for therapy, including passive immunotherapy, and particularly prevention of C-difficile intoxication in human or other animals. It is also described a polypeptide comprising a portion of C-difficile toxins A and/or B sequence being an epitope for anti-toxins A and/or B antibody. It disclosed a method for generating a neutralizing antibody directed against C-difficile toxins A and/or B. It is also provided a novel formulation that combines key toxins A and/or B epitope antibodies, located in three key domains of toxins A and/or B, for neutralisation of the toxins A and/or B, at any stage of toxins A and/or B intoxication related to C-difficile infection. The novel formulation of toxins A and/or B epitope antibodies are useful in immunotherapy, for 10 therapeutic and/or prophylactic mediation of C-difficile intoxication.

The present invention relates to monoclonal antibodies which have high anti-RSV neutralizing titers. The invention further provides for isolated nucleic acids encoding the antibodies of the invention and host cells transformed therewith. The invention yet further provides for diagnostic, prophylactic and therapeutic methods employing the antibodies and nucleic acids of the invention, particularly as a passive immunotherapy agent in infants and the elderly.

The invention provides a vaccine based on an epitope simulating human vascular endothelial growth factor VEGF, as well as a preparation method thereof. A VEGF mimic epitope which is specifically affinitive with human-mouse chimeric monoclonal antibody Avastin is screened out by use of a phage random presentation technique, and the amino acid sequence of the mimic epitope is Asp-His-Thr-Leu-Tyr-Thr-Pro-Tyr-His-Thr-His-Pro; the mimic epitope has no homology with the protein sequence of VEGF. A vaccine which can induce a polypeptide epitope aiming at VEGF molecular autoantibody in vivo is constructed on the basis of the mimic epitope. The invention provides a strategy for developing and designing the tumor therapeutic vaccine, which is targeted at the VEGF. The VEGF is one of molecules which has the strongest effect of promoting vascular growth, and is an ideal target for resisting angiogenesis and treating tumors. Therefore, the vaccine replaces or replenishes monoclonal antibody passive immunotherapy with an active immunity mode, so as to lay foundations for overcoming the defects of monoclonal antibody therapy.

The invention discloses a preparation method and an application of a yolk antibody microcapsule preparation. According to the invention, a vaccine prepared by using rotavirus is injected into a healthy laying female bird; after immunization, yolk is fetched, sterilized, separate-extracted, and purified, such that an anti-rotavirus IgY preparation is obtained; or IgY antibody preparations comprising various rotaviruses are mixed according to a certain ratio; an alginate solution with the mixed IgY antibody is dropped into a mixed solution of chitosan in a droplet manner, such that gel-state AP capsules are prepared, and the anti-rotavirus yolk antibody microcapsule preparation is obtained. The preparation is used in passive immunotherapy of rotavirus-infected patients, and is used in rotavirus prevention of high-risk populations.

The invention relates to an IgY for a mannose-sensitive hemagglutination pilus strain of Pseudomonas aeruginosa (PA-MSHA) and a preparation method and application thereof, wherein the preparation method comprises the steps of: (S1) preparing an antigen of the PA-MSHA bacterial strain; (S2) immunizing egg-laying poultry by injecting said PA-MSHA antigen, and checking immunized eggs laid by the immunized poultry; and (S3) taking out yolk of the immunized eggs to extract the IgY for the PA-MSHA bacterial strain. According to the invention, PA-MSHA is used to immunize egg-laying poultry, and the IgY for the PA-MSHA bacterial strain is then extracted from the poultry eggs. The IgY for the PA-MSHA bacterial strain can be further made into health-care and biological products to prevent and cure broad-spectrum opportunistic infection floras such as escherichia coli, pseudomonas aeruginosa, pneumococcus, deformation coccus, and helicobacter pylori, and to play a role of auxiliary treatment effect in various cancers such as breast cancer, liver cancer, lymph cancer, lung cancer, bladder cancer and leukemia, especially suitable for active and passive immunotherapy for cancers.

The present invention relates, in general, to HIV-1-reactive antibodies and, in at least certain specific embodiments, to broadly neutralizing antibodies (bnAbs) (and fragments and derivatives thereof) and to compositions comprising same. The invention further relates to methods of using such bnAbs (and fragments and derivatives thereof) and compositions in immunotherapy regimens (e.g., passive immunotherapy regimens). The antibodies (and fragments and derivatives thereof) disclosed herein can also be used in methods of identifying candidate immunogens for use in inducing an immune response against HIV-1 in a mammal (e.g., a human). The invention also relates to such methods and to immunogens so identified.

The present invention is in the field of monoclonal antibodies suitable for passive immunotherapy of Herpes Simplex Virus infections and relates to human monoclonal antibodies or fragments of said antibodies, which bind and neutralize HSV-1 and HSV-2, and their use in the prophylaxis or treatment of HSV-1 or HSV-2-associated diseases.

Disclosed are monoclonal antibodies and antibody fragments which recognize antigens encoded by HERV DNA sequences, and methods for production, including recombinant antibody fragments derived from lymphoid cells of lupus patients that make antibodies which neutralize HIV.

The present invention relates to passive immunization for treating or preventing atherosclerosis using an isolated human antibody directed towards at least one oxidized fragment of apolipoprotein B in the manufacture of a pharmaceutical composition for therapeutical or prophylactical treatment of atherosclerosis by means of passive immunization, as well as method for preparing such antibodies, and a method for treating a mammal, preferably a human using such an antibody to provide for passive immunization.