3177 results about "Antigen binding" patented technology

The present application describes engineered antibodies, with three or more functional antigen binding sites, and uses, such as therapeutic applications, for such engineered antibodies.

The present invention provides methods of re-engineering or re-shaping an antibody from a first species, wherein the re-engineered or re-shaped antibody does not elicit undesired immune response in a second species, and the re-engineered or re-shaped antibody retains substantially the same antigen binding-ability of the antibody from the first species. In accordance with the present invention, a combinatorial library comprising the CDRs of the antibody from the first species fused in frame with framework regions derived from a second species can be constructed and screened for the desired modified antibody. In particular, the present invention provides methods utilizing low homology acceptor antibody frameworks for efficiently humanizing an antibody or a fragment thereof. The present invention also provides antibodies produced by the methods of the invention.

The invention provides for a polyvalent protein complex (PPC) comprising two polypeptide chains generally arranged laterally to one another. Each polypeptide chain typically comprises 3 or 4 “v-regions”, which comprise amino acid sequences capable of forming an antigen binding site when matched with a corresponding v-region on the opposite polypeptide chain. Up to about 6 “v-regions” can be used on each polypeptide chain. The v-regions of each polypeptide chain are connected linearly to one another and may be connected by interspersed linking regions. When arranged in the form of the PPC, the v-regions on each polypeptide chain form individual antigen binding sites.

The present application relates to anti-PD-L1 antibodies or antigen binding fragments thereof, nucleic acid encoding the same, therapeutic compositions thereof, and their use to enhance T-cell function to upregulate cell-mediated immune responses and for the treatment of T cell dysfunctional disorders, such as tumor immunity, for the treatment of and cancer.

The invention provides a liquid pharmaceutical formulation which does not include NaCl and comprises more than 20 mg of a polyol and at least about 100 mg/mL of a human anti-TNF-alpha antibody, or antigen-binding portion thereof. The invention provides a high concentration antibody formulation having long-term stability and advantageous characteristics for subcutaneous administration.

This invention relates to monovalent and multivalent, monospecific binding proteins and to multivalent, multispecific binding proteins. One embodiment of these binding proteins has one or more binding sites where each binding site binds with a target antigen or an epitope on a target antigen. Another embodiment of these binding proteins has two or more binding sites where each binding site has affinity towards different epitopes on a target antigen or has affinity towards either a target antigen or a hapten. The present invention further relates to recombinant vectors useful for the expression of these functional binding proteins in a host. More specifically, the present invention relates to the tumor-associated antigen binding protein designated RS7, and other EGP-1 binding-proteins. The invention further relates to humanized, human and chimeric RS7 antigen binding proteins, and the use of such binding proteins in diagnosis and therapy.

Bispecific antibody derivatives are disclosed which are comprised of a first region which binds to a first antigen and a second region which binds to a second antigen different from the first antigen. The first and second regions of the bispecific antibody are each stabilized by an additional internal disulfide bridge, and connected by a flexible polypeptide linker. The bispecific antibody is devoid of an Fc portion and is encoded as a single chain-sequence.

The present invention relates to antibodies and antigen-binding portions thereof that specifically bind to insulin-like growth factor I receptor (IGF-IR), which is preferably human IGF-IR. The invention also relates to human anti-IGF-IR antibodies, including chimeric, bispecific, derivatized, single chain antibodies or portions of fusion proteins. The invention also relates to isolated heavy and light chain immunoglobulin molecules derived from anti-IGF-IR antibodies and nucleic acid molecules encoding such molecules. The present invention also relates to methods of making anti-IGF-IR antibodies, pharmaceutical compositions comprising these antibodies and methods of using the antibodies and compositions thereof for diagnosis and treatment. The invention also provides gene therapy methods using nucleic acid molecules encoding the heavy and/or light immunoglobulin molecules that comprise the human anti-IGF-IR antibodies. The invention also relates to gene therapy methods and transgenic animals comprising nucleic acid molecules of the present invention.

A method for preparing a protein or peptide powder is provided that includes spray drying a solution including more than, e.g., about 50 mg/mL of a protein or peptide (e.g., an antibody or antigen binding portion thereof), and at least one excipient. Also provided are stable powdered compositions including a protein and an excipient having less than, e.g., about 6% residual moisture.

The present invention relates to a novel process for the preparation of biologically active antibody dimers in a pharmaceutically acceptable composition. The dimers can be composed of two antibody molecules having the same antigen binding specificity and linked through reducible, disulfide, or a non-reducible thioether, bond (homodimer). Alternatively, the dimers can be composed of two different antibody molecules having binding specificity for two distinct antigens (heterodimer). These dimers are useful for inducing hyper-cross-linking of membrane antigens. The present invention further relates to the use of biologically active antibody dimers for the preferential killing or inhibition of selected cell populations in the treatment of diseases such as cancer and autoimmune disorders.

The invention describes methods of treating depression comprising administering a TNFα antibody, such as a human TNFα antibody. The invention also provides a method for treating depression comprising inhibiting TNFα activity in a subject suffering from depression by systemically administering to the subject a human anti-TNFα antibody, or an antigen-binding portion thereof, such that depression is treated. Also described is a method for the treatment or alleviation of depression or other affective disorders comprising administering an amount of an anti-inflammatory agent effective to treat or alleviate depression or other affective disorder to a subject in need thereof, wherein said anti-inflammatory agent down-regulates peripheral cytokine levels to thereby treat or alleviate depression or other affective disorder.

The present invention relates to mammalian antibodies, designated 12B1 and antigen-binding portions thereof that specifically bind to insulin-like growth factor I receptor (IGF-IR), preferably human IGF-IR. Also included are chimeric, bispecific, derivatized, single chain antibodies derived from the antibodies disclosed herein. Nucleic acid molecules encoding the mammalian antibodies as well as methods of use thereof are also disclosed. Also included are pharmaceutical compositions comprising these antibodies and methods of using the antibodies and compositions thereof for treatment and diagnosis of pathological hyperproliferative oncogenic disorders associated with expression of IGf-1R.

Monoclonal anti-human CD20 antigen binding antibodies containing human IgG3 constant domains are provided. These antibodies possess effector functions that render them well suited for use in therapeutic methods, especially treatments wherein inhibition of B cell function or B cell number is therapeutically desirable.