Provided are innovative compositions for tethering blocking an inactivating of airborne respiratory infectious viruses. The compositions comprise bispecific proteins with two different antigen binding regions (ABR), which are typically configured as immunoglobulin “single variable domains” (ISV). A first ISV binds to a surface protein found on an airborne infectious virus. A second ISV binds to a mucin protein, e.g. a mucin protein present on ocular, nasopharyngeal, tracheal and/or oral surfaces of a mammal. The two ISV are joined by a polypeptide linker.

The invention provides novel cytotoxic compounds and cytotoxic conjugates comprising these cytotoxic compounds and cell-binding agents. More specifically, this invention relates to novel thailanstatin A analogs, useful as cytotoxic small molecule toxins in antibody-drug conjugates (ADCs). The present invention further relates to compositions including these cytotoxic compounds and ADCs, and methods for using these toxins and ADCs to treat pathological conditions including cancer.

The present disclosure provides scaffolds and antibody-drug conjugates (ADCs) comprising a stimulator of interferon genes (STING). The present disclosure also provides uses of the ADCs in treatment, e.g., treatment of cancer.

Multispecific antibodies (e.g., bispecific antibodies) that bind to HIV gp120 and CD3 are disclosed. Also disclosed are methods of using such antibodies to treat or prevent HIV infection.

The present disclosure provides scaffolds and antibody-drug conjugates (ADCs) comprising a stimulator of interferon genes (STING). The present disclosure also provides uses of the ADCs in treatment, e.g., treatment of cancer.

In one aspect, the present disclosure provides targeted complement-activating molecules comprising a target-binding domain and a complement-activating serine protease effector domain. In some embodiments, the target-binding domain is derived from an antibody or an antigen-binding fragment thereof. Also provided are compositions and methods for treating cancer, autoimmune disease, or microbial infection, including bacterial, viral, fungal, or parasitic infection, using targeted complement-activating molecules.

Antibodies that bind SARS-CoV Spike protein, SARS-CoV-2 Spike protein, and methods of using same for treating or preventing conditions associated with SARS or COVID-19 and for detecting SARS-CoV or SARS-CoV-2.

MAb 9F4 provides heterologous protection against multiple influenza A H5N1 clade viruses, including one of the recently designated subclades, namely 2.3.4, through binding to a novel epitope. The present invention relates to isolated mouse-human chimeric (xi) IgG.sub.1-9F4 and IgA.sub.1-9F4 MAb which retain high degrees of binding and neutralizing activity against influenza H5N1. The invention also relates to methods of production, kits and uses of the chimeric antibodies in the treatment of influenza A subtype H5N1 disease.

Disclosed herein are isolated humanized monoclonal antibodies that specifically bind Japanese encephalitis virus (JEV) with a binding affinity of about 1.0 nM or less. Nucleic acids encoding these antibodies, expression vectors including these nucleic acid molecules, and isolated host cells that express the nucleic acid molecules are also disclosed. Methods of treating, preventing, and/or ameliorating JEV infection in a subject with JEV also are disclosed. Additionally, the antibodies can be used to detect JEV in a sample, and methods of diagnosing JEV infection, or confirming a diagnosis of JEV infection in a subject, are disclosed herein that utilize these antibodies.

The invention features a novel influenza antibody that specifically binds to influenza hemagglutinin and reduces or inhibits hemagglutinin binding to sialic acid. The invention also provides methods, compositions, and kits featuring the novel antibody and its use in preventing or treating influenza infection.