2405 results about "Antigen binding" patented technology

This disclosure provides a method for treating a subject afflicted with a lung cancer, which method comprises administering to the subject therapeutically effective amounts of: (a) an antibody or an antigen-binding portion thereof that specifically binds to a Programmed Death-1 (PD-1) receptor and inhibits PD-1 activity; and (b) an antibody or an antigen-binding portion thereof that specifically binds to a Cytotoxic T-Lymphocyte Antigen-4 (CTLA-4) and inhibits CTLA-4 activity.

KLRB1 binding agents (in particular anti-KLRB1 antibodies and antigen binding portion thereof) and compositions thereof, as well as therapeutic methods of using the agents, e.g., for depleting cells or inhibiting cells or activating cells (in particular, Th17, Th17.1, ex-Th17, Tc17, MAIT, INKT, peTh2, ILC2, ILC3, NK cells, and / or neoplastic T or NK cells in vivo), for the treatment of autoimmune disease, allergic diseases, transplant rejection, hematologic malignancies, and cancer.

The invention relates to an anti-CD3 nano antibody, an anti-CD38 antibody and a bispecific antibody containing the anti-CD3 nano antibody and the anti-CD38 antibody. According to the invention, an anti-CD3 nano antibody and an anti-CD38 monoclonal antibody are excavated and prepared, humanized design is carried out to obtain antibodies with high affinity and specificity, and different configurations of bispecific T cell conjugation antibodies targeting CD3 and CD38 are further designed, so that the CD3 and CD38 dual-specificity T cell conjugation antibodies are obtained. The antigen binding activity, the T cell-mediated tumor cell killing effect and the T cell proliferation and activation function of the antibody are systematically evaluated in vitro, and experimental results show that the T cell conjugation antibody can effectively recruit and activate T cells and has a remarkable killing effect on CD38 positive tumor cells, and it is further verified that the antibody has remarkable in-vivo anti-tumor activity and has a good application prospect. Therefore, the polypeptide has high affinity, good pharmacological characteristics and development potential.

The invention belongs to the technical field of antibody preparation, and particularly relates to an anti-human carbohydrate antigen CA125 monoclonal antibody and application thereof. The amino acid sequences of CDR1-3 on a light chain variable region of the monoclonal antibody are respectively shown as SEQ ID NO.3-5, and the amino acid sequences of CDR1-3 on a heavy chain variable region of the monoclonal antibody are respectively shown as SEQ ID NO.8-10. The monoclonal antibody provided by the invention can specifically recognize and bind to a natural carbohydrate antigen CA125 expressed by human cells or tissues, has good affinity and relatively high sensitivity of binding of the antibody and the antigen, has strong anti-interference ability to complex non-target protein components in the cells / tissues, is beneficial to significantly improving the accuracy and reliability of immunodetection of human CA125 protein, and has good application prospects. The method is suitable for high-specificity, high-sensitivity and high-reliability detection of the human CA125 protein, and has good applicability in a plurality of detection systems such as immunoblotting, immunoprecipitation, immunohistochemistry and the like.

The invention provides a group of specific antibodies for detecting botulinum toxin A and application thereof, and belongs to the technical field of botulinum toxin detection. The invention provides a group of specific antibodies for detecting botulinum toxin A or antigen binding fragments thereof. The specific antibodies or the antigen binding fragments thereof comprise a rabbit monoclonal antibody 1F11 or an antigen binding fragment thereof and a rabbit monoclonal antibody 2A10 or an antigen binding fragment thereof. The time-resolved immunodetection kit prepared by the invention has good detection sensitivity, specificity, repeatability and sample matrix tolerance, the detection range is 0.02 ng / mL-10 ng / mL, the detection limit is 0.02 ng / mL, cross reaction with other serotype botulinum toxins (B, E and F) does not exist, and the time-resolved immunodetection kit is not influenced by sample matrixes such as ham sausages and thick broad-bean sauce. The detection system established by the invention has a good application prospect in detection of botulinum toxin type A.

The present disclosure provides an antibody or antigen-binding fragment thereof that specifically binds to human cMET. The disclosure also provides polynucleotides encoding the antibodies or antigen binding fragments thereof, vectors comprising the polynucleotides, host cells comprising the vectors, methods of generating the antibodies, and compositions comprising the antibodies.

The invention discloses an anti-human inflammatory factor interleukin 6 monoclonal antibody and an application thereof. When the monoclonal antibody is prepared, an adopted immunogen is a human inflammatory factor interleukin 6 antigen, and an amino acid sequence of the human inflammatory factor interleukin 6 antigen comprises a sequence as shown in SEQ ID NO: 1. A group of monoclonal antibodies specifically combined with antigens is constructed based on the IL-6 antigens. The IL-6 monoclonal antibody has strong binding capacity with an IL-6 antigen in a clinical sample, has no cross reaction with other proteins, has good specificity and affinity compared with a commercial antigen, can be effectively applied to ELISA and a dry-type immunofluorescence method, has good detection linearity, precision, stability and accuracy, and can be widely applied to the field of immunoassay. The antibody can be combined with the antigen to serve as a detection reagent raw material combination, and has clinical detection advantages.

Myocilin-binding agents including antibodies and antigen binding fragments thereof and fusion proteins that immunospecifically bind the coiled-coil domain of myocilin but do not bind to misfolded myocilin are provided herein. The disclosed antibodies and antigen binding fragments and fusion proteins are useful for the detection and extraction of natively folded myocilin from a sample.

Provided herein is a conjugate of the Formula (XX): or a pharmaceutically acceptable salt thereof, wherein; L is a Targeting Unit, wherein the Targeting Unit is an anti-PTK7 antibody or an antigenbinding portion thereof, wherein the variables of Formula (XX) are as defined in the application. Such compounds can be useful as anti-cancer agents.

An anti-Nectin-4 single-domain antibody and the use thereof. Provided are a single-domain antibody specifically targeting Nectin-4, and amino acid sequences of a framework region FR and a complementarity-determining region CDR of a VHH chain thereof. The anti-Nectin-4 single-domain antibody can bind to a Nectin-4 antigen. An antibody-drug conjugate and a multi-specific antibody targeting the Nectin-4 target prepared by means of using the single-domain antibody have an excellent activity and high therapeutic efficacy.

KLRB1 binding agents (in particular anti-KLRB1-antibodies and antigen binding portion thereof) with increased humanness and compositions thereof, as well as therapeutic methods of using the agents, e.g., for depleting cells or inhibiting cells or activating cells, (in particular, Th17, Th17.1, ex-Th17, Tc17, MAIT, iNKT, peTh2, ILC2, ILC3, NK cells, and / or neoplastic T or NK cells in vivo), for the treatment of autoimmune disease, allergic diseases, transplant rejection, hematologic malignancies, and cancer.

Provided are nucleic acids that encode decoy-resistant interleukin 18 (DR-18) polypeptides, as well as vectors and cells comprising such nucleic acids and cells that comprise such vectors. Cells encoding DR-18 polypeptides may be referred to as DR-18 armored cells. The nucleic acids may further encode a chimeric antigen receptor (CAR) or multiple CARs, including CARs that bind to antigens described herein. Methods are also provided, including methods of making the nucleic acids, vectors, and / or cells, as well as methods of use, such as employing the nucleic acids, vectors, and / or cells, in the treatment of a subject having cancer.

The present disclosure provides amino acid sequences (e.g., antibodies) capable of binding to glypican 3 protein (GPC3). The present disclosure relates to antigen binding fragments of GPC3 antibodies; conjugates of a GPC3 antibody, including an immunoconjugate; bispecific antibodies comprising a GPC3 antibody and related compositions and formulations. The disclosure also relates to methods of treating GPC3-related diseases, disorders and conditions, including cell proliferative diseases, such as cancer, more particularly liver cancer, using these sequences, such as GPC3 antibodies and antigen-binding fragments thereof.

Described herein are antibodies, or antigen binding fragments thereof, that bind OX40L and IL- 13 in combination and methods of use thereof. In certain aspects, described herein are methods of inhibiting OX40L and IL- 13 biological activity. In certain aspects, described herein are pharmaceutical compositions comprising the anti-OX40L and anti-IL-13 antibodies, or antigen binding fragments thereof. In certain aspects, the antibodies and methods described herein are used for treatment of an inflammatory disease or disorder (e.g., associated with elevated levels of OX40L and / or IL- 13). Also described herein are compositions and combinations comprising an antibody or an antigen binding region that binds OX40L, an antibody or antigen binding region that binds IL- 13, and a hyaluronidase or variant thereof, as well as related methods of treating an inflammatory disorder or disease in a human patient by administering such compositions and combinations.

The invention discloses an anti-CLDN6 nano antibody and related application thereof, and relates to the field of antibodies. The invention provides an anti-CLDN6 nano antibody, which comprises HCDR1, HCDR2 and HCDR3 in a heavy chain variable region of which the amino acid sequence is as shown in SEQ ID NO: 4, the nano antibody has excellent antigen binding activity, high specificity and good affinity, has relatively strong killing activity on cells with high expression of CLDN6, and can be used for preparing anti-CLDN6 drugs. The requirements of CLDN6 positive tumor immunotherapy on efficient, specific and high-penetrability antibody molecules are met, and a new strategy and means are provided for tumor therapy.

Provided herein are engineered immune cells and populations thereof for administration to patients to treat cancer (e.g., solid tumors or liquid tumors) and other conditions. The cells are engineered to functionally express a reduced level of one or more of RFX5, NLRC5, TAP2, β2m, TRAC, RFXAP, CIITA and RFXANK. The cells optionally are further engineered to express one or more than one additional protein such as an antigen binding protein (e.g., a chimeric antigen receptor (CAR) or T cell receptor) to target tumor cells or other damaged cells in the patient and / or to express other genes at a reduced level. Also provided are methods of making and using the engineered cells, compositions and kits comprising them, and methods of treating by administering the cells and the compositions.

Provided herein are methods of inserting a nucleic acid encoding a polypeptide of interest into a target genomic locus in a cell or a population of cells in a subject, methods of expressing a polypeptide of interest from a target genomic locus in a cell or a population of cells in a subject, methods of treating an enzyme deficiency in a subject in need thereof, and methods of preventing or reducing the onset of a sign or symptom of an enzyme deficiency in a subject in need thereof. The methods use CD40 inhibitors (e.g., CD40 antigen-binding molecules) to mitigate immune response and facilitate redosing of nucleic acid constructs encoding a polypeptide of interest and nuclease agents targeting a target genomic locus to achieve, for example, a step-wise increase in expression of a polypeptide of interest in a subject following insertion of the nucleic acid construct without overshooting.

Myocilin-binding agents including antibodies and antigen binding fragments thereof and fusion proteins that immunospecifically bind the coiled-coil domain of myocilin but do not bind to misfolded myocilin are provided herein. The disclosed antibodies and antigen binding fragments and fusion proteins are useful for the detection and extraction of natively folded myocilin from a sample.

Disclosed herein are antibodies or antigen-binding fragments thereof that specifically bind to human CD19. Chimeric antigen receptors and chimeric antigen receptor transgenes comprising an antigen binding domain that specifically binds to human CD19 are also disclosed. Also described herein are immune cells, viral vectors, and other compositions containing the antibodies, the antigen binding fragments, the chimeric antigen receptors, and / or the chimeric antigen receptor transgenes.

The present application is directed to methods and compositions that are useful for reducing the number of myeloid-derived suppressor cells (MDSC), tumor associated macrophages (TAM), or both in a subject. The methods include administering an antigen binding protein that binds to an antigen expressed by MDSC and / or TAM, or administering a modified T cell or NK-92 cell that expresses an antigen binding protein that binds to an antigen expressed by MDSC and / or TAM, or a combination of both, to a subject. For example, the antigen binding protein can bind to CD33 expressed by MDSC and / or TAM. The methods and compositions are useful for treating a disease associated with MDSC and / or TAM infiltration into a tissue or tumor.

Provided are multispecific antigen binding proteins (MSAPs), such as trispecific antigen binding proteins (TSAPs or trispecific T cell engagers), that specifically bind to CD20, CD19, and CD3. Also provided are TSAPs or bispecific antigen binding proteins (BSAPs), that specifically bind to CD3 and CD20. Compositions (e.g., pharmaceutical compositions), kits, methods of use (e.g., treating cancer), and methods of making thereof are also provided.

The present disclosure provides an antibody or antigen-binding fragment thereof that specifically binds to human cMET. The disclosure also provides polynucleotides encoding the antibodies or antigen binding fragments thereof, vectors comprising the polynucleotides, host cells comprising the vectors, methods of generating the antibodies, and compositions comprising the antibodies.

As described herein are polypeptides and antibodies having an Fc region and an antigen binding region where the Fc region has an Fc-Fc-enhancing mutation and a C1q binding-enhancing mutation providing for polypeptides or antibodies with increased CDC activity and / or agonistic activity.

The present invention provides EGFR and c-MET bispecific antibodies, antigen binding portions thereof, other binding agents and EGFR and c-MET bispecific conjugates thereof, as well as methods and uses of such antibodies and conjugates for the treatment of cancer and autoimmune disease.

Provided herein are novel Glypican 3 (GPC3) antibodies or antigen binding fragments and GPC3 / CD3 bispecific antibodies. The present application also provides chimeric antigen receptors comprising the antibodies or antigen-binding fragments, related CAR-T cells, and preparation methods and uses of the same. The present application further provides pharmaceutical compositions comprising GPC3 antibodies or antigen binding fragments, related GPC3 / CD3 bispecific antibodies, related GPC3 CAR or CAR-T cells, and methods of treating cancer in a subject in need thereof by administering the Glypican 3 (GPC3) antibodies or antigen binding fragments, the bispecific antibodies, the chimeric antigen receptors, the CAR-T cells, or the pharmaceutical compositions. The cancers treated in accordance with the application include Glypican-3-positive cancers.

Antigen-binding molecules (ABMs) that bind to Porphyromonas gingivalis are described. The ABMs may be human or humanized ABMs. The ABMs find use in treating infections involving P. gingivalis, such as periodontal disease. Also provided are methods of treating or preventing a disorder or disease by administering the ABM.

An antigen-binding molecule capable of binding to multiple different antigens (e.g., CD3 on T cells, and CD137 on T cells, NK cells, DC cells, and / or the like), but does not nonspecifically crosslink two or more immune cells such as T cells is provided. Such multispecific antigen-binding molecule is capable of modulating and / or activating an immune response while circumventing the cross-linking between different cells (e.g., different T cells) resulting from the binding of a conventional multispecific antigen-binding molecule to antigens expressed on the different cells, which is considered to be responsible for adverse reactions when the multispecific antigen-binding molecule is used as a drug.

The present disclosure describes low pH formulations comprising. e.g., an antigen-binding protein that binds CD3, at least one buffer agent, at least one saccharide and at least one surfactant.

The present invention relates to combination therapies employing tumor targeted anti-CEA / CD3 bispecific antibodies and / or agents blocking PD-L1 / PD-1 interaction in combination with 4-1BB (CD137) agonists, in particular 4-1BBL trimer containing antigen binding molecules that also target FAP, the use of these combination therapies for the treatment of cancer and methods of using the combination therapies.

Antigen binding molecules that bind to C1q are disclosed herein. Also disclosed are compositions comprising such antigen binding molecules, and uses and methods using the same.