A method for treating HBV infection in a subject, comprising administering to the subject an anti-pre-S1 antibody or a fragment thereof at a dose of about 0.1 mg/kg to about 80 mg/kg. Also relates to an anti-pre-S1 antibody or a fragment thereof for use in treating HBV infection.

The present disclosure relates to constructs useful in expressing biotinylated monomers and tetramers produced from these monomers. The present disclosure also relates to methods for production and use of these tetramers in identifying and isolating antigen specific B cells and cloning antibodies thereto.

The present disclosure provides detection methods employing HCV core lipid binding domain and DNA binding domain monoclonal antibodies. In certain embodiments, the lipid binding domain monoclonal antibody recognizes an epitope in amino acids 141 to 161 of HCV core protein.

Provided are NK-92 cells expressing a chimeric antigen receptor (CAR). The CAR can comprise an intracellular domain of FcεRIγ. Also described are methods for treating a patient having or suspected of having a disease that is treatable with NK-92 cells, such as cancer or a viral infection, comprising administering to the patient NK-92-CAR cells.

Various compositions are disclosed for the treatment of viral infections. The compositions of conjugates comprise antibody constructs attached to myeloid cell agonists via a linker are also provided. Additionally provided are the methods of preparation and use of the conjugates. This includes methods for treating viral infections, such as viral liver diseases.

Compositions and methods are disclosed herein for producing one or more immunoglobulins in an isolated cytotoxic B lymphocyte cell line. An isolated cell line includes an isolated B lymphocyte cell line capable of expressing at least one exogenously incorporated membrane immunoglobulin capable of binding to a first antigen and at least one endogenous secreted immunoglobulin capable of binding to a second antigen, and further capable of expressing at least one exogenously incorporated recombinant B cell receptor that signals for expression of cytotoxic effector molecules.

Provided herein is a human monoclonal antibody 8D6 against hepatitis C virus (HCV) infection. The antibody binds to the E2 subunit of HCV capsid protein, and can prevent HCV from infecting susceptible host cells. By using the antibody variable region gene or the complementary determining region (CDR) gene, different forms of genetic engineering antibodies have been transformed and produced in any expression system of the prokaryotic and eukaryotic cells as therapeutics to prevent or treat HCV infection.

Compositions and methods are disclosed herein for producing one or more immunoglobulins in an isolated cytotoxic B lymphocyte cell line. An isolated cell line includes an isolated B lymphocyte cell line capable of expressing at least one exogenously incorporated membrane immunoglobulin capable of binding to a first antigen and at least one endogenous secreted immunoglobulin capable of binding to a second antigen, and further capable of expressing at least one exogenously incorporated recombinant B cell receptor that signals for expression of cytotoxic effector molecules.

The present disclosure relates to constructs useful in expressing biotinylated monomers and tetramers produced from these monomers. Specifically, the disclosure provides a construct useful in expressing biotinylated antigen monomers, said construct comprising a viral protein of an ectodomain of Hepatitis C Virus (HCV) envelope glycoprotein E2 or Human Immunodeficiency Virus (HIV) gp140. Further disclosed are methods for production and use of these tetramers in identifying and isolating antigen specific B cells and cloning antibodies thereto.

The present disclosure provides detection methods employing HCV core lipid binding domain and DNA binding domain monoclonal antibodies. In certain embodiments, the lipid binding domain monoclonal antibody recognizes an epitope in amino acids 141 to 161 of HCV core protein.