Methods of enhancing the effectiveness of an antibody-based therapeutic agent are provided herein. The methods include administering an antibody-based therapeutic and a composition capable of preferentially activating monocytes or macrophages or preferentially depleting B10 cells to a subject in need of such treatment. The subject may have cancer, an autoimmune disease, an infectious disease or an immunodeficiency. The composition capable of preferentially activating monocytes or macrophages may be a TLR3 agonist. The composition capable of preferentially depleting B10 cells may be a CD19 antibody. Pharmaceutical compositions comprising an antibody-based therapeutic agent and a composition capable of preferentially activating monocytes or macrophages or preferentially depleting B10 cells are also provided.
