The present inventors have successfully prepared an antibody Fc region dimer that has binding activity against each of an antigen and FcγR, but does not bind to the antigen and the FcγR at the same time, and a polypeptide comprising the Fc region dimer. The present invention enables the preparation of a multispecific binding polypeptide capable of avoiding an adverse reaction that may be caused by its binding to an antigen and FcγR at the same time. Thus, the present invention provides a polypeptide suitable as a drug.

Compositions and methods that utilize anti-CD11b antibodies, anti-CD18 antibodies, anti-myeloperoxidase (MPO) antibodies, anti-integrin αV antibodies, anti-integrin β1 antibodies, Abciximab, neutrophil inhibitory factor (NIF) protein, and/or combinations thereof to treat solid tumors are described.

The present invention features inter alia nucleic acid molecules which encode polypeptides comprising a single chain Fc region and the polypeptides they encode. The Fc moieties of these constructs are linked by a cleavable scFc linker which is adjacent to at least one enzymatic cleavage site, e.g., an intracellular processing site. The resulting processed molecules comprise two polypeptide chains and substantially lack the extraneous amino acid sequence found in single chain Fc linker molecule. Methods of making and using these dimeric molecules are also described.

Antibodies and antibody fragments that specifically bind to glycoprotein IIb/IIIa (GPIIb/IIIa) are disclosed. Chimeric molecules comprising such antibodies or antigen-binding fragments are also disclosed. In addition, methods of using the disclosed antibodies, antibody fragments, and chimeric molecules, e.g., to target agents to platelets and for the treatment or prevention of diseases or disorders are provided.

Molecules that bind myeloproliferative leukemia (MPL) protein and methods of using the same are disclosed.

Disclosed herein are non-naturally existing novel platelet variants or platelet like cells (PLCs), extracellular vesicles (EVs), and derivatives thereof. Composition comprising the same and methods for treatment or prevention of diseases or disorders therewith is also disclosed.

Provided is an isolated antibody that specifically binds to HPA-1a. Also provided is a nucleic acid molecule that encodes the antibody, and compositions comprising the antibody. Also provided is a method of producing the antibody and methods and uses which employ the antibody. Also provided are therapeutic uses of the antibody, for example in the treatment or prophylaxis of fetal and neonatal alloimmune thrombocytopenia (FNAIT).

Embodiments of the invention provide swallowable devices, preparations and methods for delivering drugs and other therapeutic agents within the GI tract. Many embodiments provide a swallowable device for delivering the agents. Particular embodiments provide a swallowable device such as a capsule for delivering drugs into the intestinal wall or other GI lumen. Embodiments also provide various drug preparations that are configured to be contained within the capsule, advanced from the capsule into the intestinal wall and degrade to release the drug into the bloodstream to produce a therapeutic effect. The preparation can be operably coupled to delivery means having a first configuration where the preparation is contained in the capsule and a second configuration where the preparation is advanced out of the capsule into the intestinal wall. Embodiments of the invention are particularly useful for the delivery of drugs which are poorly absorbed, tolerated and/or degraded within the GI tract.

The present invention provides antagonists and methods of use thereof in the treatment of cancer and abnormal immune suppression diseases.

A method for modulating angiogenesis in a cancer or tumor refractory to anti-VEGF, including identifying a cancer cell as being referactory to anti-VEGF, and then contacting the cancer cell refractory to anti-VEGF with an effective amount of an agent that modulates interaction between Gal1 or a Gal1 fragment and the natural binding partner of Gal1 or the Gal1 fragment to thereby modulate angiogenesis.