Abstract: This disclosure provides isolated antibodies, for example, monoclonal antibodies, that specifically bind to the C-C Motif Chemokine Receptor 8 (CCR8) expressed on the surface of a cell and mediate depletion of the CCR8-expressing cell by anti-body-dependent cellular cytotoxicity (ADCC). The disclosure provides methods for treating a subject afflicted with a cancer comprising administering to the subject a therapeutically effective amount of an anti-CCR8 antibody as monotherapy or in combination with an anti-cancer agent such as an immune checkpoint inhibitor, for example, an anti-PD-1 or anti-PD-L1 antibody.

Abstract: Provided are assays or methods for identifying antibodies that bind to microorganisms, e.g., pathogenic microorganisms, such as bacteria other infectious agents. In some embodiments, the provided methods for identifying an antibody that binds the target microorganism involves gel encapsulation of antibody-producing cells in gel microdroplets with a target microorganism. Also provided are antibodies produced by the method. Also provided are antibodies that bind a conserved region or epitope across variants or species of Acenitobacter.