Described herein are compositions of modified binding agents and modified carrier proteins, as well as nanoparticle complexes comprising modified binding agents and modified carrier proteins with optionally at least one therapeutic agent, and methods of making and using the same, in particular, as a cancer therapeutic.

A variety of targeting moiety peptide epitope complexes (TPECs) are described in different embodiments. In each of the embodiments, however, a targeting moiety may be used to deliver the TPEC to an area of unwanted cells, allowing for a therapeutic effect to be delivered locally. The TPEC also contains a plurality of T-cell epitopes. The TPEC further comprises cleavage sites that release the T-cell epitopes from the targeting agent, and in some embodiments from each other, when they are in the microenvironment of the unwanted cells. Although the arrangement and number of T-cell epitopes varies in different embodiments described herein, once cleaved from the targeting agent (and any neighboring T-cell epitopes), the T-cell epitopes function by stimulating an immune response against the unwanted cells.

This invention relates to multi-specific molecules, such as long acting multi-specific antibodies. Also disclosed are relates methods.

Methods are provided for making bispecific antibodies and antibody conjugates comprising site-specifically cross-linking two or more antibodies, antibody fragments or Fc-fusion proteins. Also provided are compositions and uses for the bispecific antibodies and antibody conjugates. The bispecific antibodies may be used to treat a disease or condition. Also provided are methods for site-specifically conjugating a liposome, an mRNA or an siRNA to an antibody, and uses of the antibody-conjugated liposome, mRNA or siRNA.

The provided is a T-BsAb (T-cell-engaging bispecific antibody) with dual affinities to CD3 on T cells and CD19 on B cells and use thereof in treating autoimmune diseases. In particular, the provided is a PEGylated T-BsAb with dual affinities to CD3 and CD19 and use thereof in treating multiple sclerosis (MS) as well as other autoimmune diseases.

The present invention concerns methods for identifying, producing, and engineering binding molecule conjugates, and to the conjugates produced. In particular, the invention concerns Surrobody conjugates composed of an antibody heavy chain variable domain and a surrogate light chain, wherein the surrogate light chain and/or the antibody heavy chain variable domain is conjugated to a therapeutic or diagnostic agent.

The invention provides anti-cluster of differentiation 3 (CD3) antibodies and methods of using the same.

Provided herein are compositions comprising trispecific and/or trivalent binding proteins comprising four polypeptide chains that form three antigen binding sites that specifically bind one or more HIV target proteins or one or more T-cell receptors, where in a first pair of polypeptides forming the binding protein possess dual variable domains having a cross-over orientation and wherein a second pair of polypeptides forming the binding protein possess a single variable domain. Also provided herein are methods for making trispecific and/or trivalent binding proteins and uses of such binding proteins for the treatment and/or prevention of HIV/AIDS.

Provided herein are multispecific immunomodulatory antigen-binding constructs (MIACs) and compositions comprising the constructs. Also provided are methods of using the constructs and methods of making the constructs.

The invention provides anti-cluster of differentiation 3 (CD3) antibodies and methods of using the same.