University of California

Other

Fudan University

Planet Biotechnology Inc.

Keith E Mostov

Andrew C Hiatt

Julian K-c Ma

Thomas Lehner

Janice Richman-Eisenstat

Steven J Chapin

Liang Cai

Methods and compositions for treating kidney injury are provided.

Kidney injury treatment

The invention provides compositions and methods for specific binding to a region of the polymeric immunoglobulin receptor (pIgR) of a cell with the provisos that the ligand does not substantially bind to the most abundant form of the secretory component (SC) of pIgR present in an organ of interest of an animal of interest under physiological conditions, and does not bind to the pIgR stalk. In some embodiments, the ligand decreases cleavage of SC from the stalk by at least one-third. The ligands and methods of the invention can be used with both birds and mammals. In more preferred embodiments, the animal is a mammal. In the most preferred embodiment, the animal is a human. The ligand may be targeted into the cell or may undergo retrograde transcytosis and release at the basolateral side of the cell, and may comprise a biologically active composition.

Methods of targeting agents to cells expressing the polymeric immunoglobulin receptor

The immunoglobulins of the present invention are useful therapeutic immunoglobulins against mucosal pathogens such as. The immunoglobulins contain a protection protein that protects the immunoglobulins in the mucosal environment. The invention also includes the greatly improved method of producing immunoglobulins in plants by producing the protection protein in the same cell as the other components of the immunoglobulins. The components of the immunoglobulin are assembled at a much improved efficiency. The method of the invention allows the assembly and high efficiency production of such complex molecules. The invention also contemplates the production of immunoglobulins containing protection proteins in a variety of cells, including plant cells, that can be selected for useful additional properties. The use of immunoglobulins containing protection proteins as therapeutic antibodies against mucosal and other pathogens is also contemplated.

Method for producing immunoglobulins containing protection proteins and their use

Ligands directed to the non-secretory component, non-stalk region of plgR and methods of use thereof

The immunoglobulins of the present invention are useful therapeutic immunoglobulins against mucosal pathogens such as The immunoglobulins contain a protection protein that protects the immunoglobulins in the mucosal environment. The invention also includes the greatly improved method of producing immunoglobulins in plants by producing the protection protein in the same cell as the other components of the immunoglobulins. The components of the immunoglobulin are assembled at a much improved efficiency. The method of the invention allows the assembly and high efficiency production of such complex molecules. The invention also contemplates he production of immunoglobulins containing protection proteins in a variety of cells, including plant cells, that can be selected for useful additional properties. The use of immunoglobulins containing protection proteins a therapeutic antibodies against mucosal and other pathogens is also contemplated.

Immunoglobulins containing protection proteins and their use

Antibody ligands are provided for specific binding to the stalk of a polymeric immunoglobulin receptor (plgr) of a cell with the proviso that the ligand does not substantially bind to secretory component of plgR under physiological conditions. The ligand may be targeted to, into, or across the cell and may comprise a biologically active composition.

Antibodies to PIGR stalk

Method for producing immunoglobulins containing protection proteins in plants and their use

The immunoglobulins of the present invention are useful therapeutic immunoglobulins against mucosal pathogens such as S. mutans. The immunoglobulins contain a protection protein that protects the immunoglobulins in the mucosal environment. The invention also includes the greatly improved method of producing immunoglobulins in plants by producing the protection protein in the same cell as the other components of the immunoglobulins. The components of the immunoglobulin are assembled at a much improved efficiency. The method of the invention allows the assembly and high efficiency production of such complex molecules. The invention also contemplates the production of immunoglobulins containing protection proteins in a variety of cells, including plant cells, that can be selected for useful additional properties. The use of immunoglobulins containing protection proteins as therapeutic antibodies against mucosal and other pathogens is also contemplated.

Method for producing immunoglobulins containing protection proteins in

Compositions and methods for specific binding to the stalk of a polymeric immunoglobulin receptor (pIgR) of a cell with the proviso that the ligand does not substantially bind to secretory component of pIgR under physiological conditions. The ligand may be targeted to, into, or across the cell and may comprise a biologically active composition.

Growing community of inventors

San Francisco, CA, United States of America

Keith E Mostov