Abstract: Orthogonal IL-21 receptors and orthogonal IL-21 cytokines are described. The IL-21 receptor-cytokine pairs may include an orthogonal interleukin-21 receptor ? chain (“ortho-IL-21R?”) that has impaired binding to native interleukin-21 cytokine (“IL-21”) and an orthogonal IL-21 cytokine (“ortho-IL-21”) that has impaired binding to native IL-21R?, wherein the ortho-IL-21R? binds to the ortho-IL-21. The IL-21 receptor-cytokine pair may activate IL-21 signaling. Cells engineered to express the orthogonal IL-21 receptors are also described, as well as methods for using such cells for treatment of various diseases and disorders.

Abstract: This application relates generally to the production of modified, non-natural ?1-?2 domains of NKG2D ligands with attached polypeptides having specific target-binding properties, for example, antibodies or variable fragments of antibodies, that are selectively delivered to Chimeric Antigen Receptors (CARs) comprised of modified, non-natural NKG2D receptors on engineered mammalian cells. The targeting of surface-expressed molecules includes those of virus-infected cells that can then be attacked and ablated by engineered cells of the immunity system expressing CARs cognate to the modified, non-natural ?1-?2 domains of NKG2D ligands with attached polypeptides.

Abstract: The present invention provides methods and compositions for generating transgenic animals, including transgenic mammals, as well as plasma cells that allow for cell surface capture of secreted immunoglobulin molecules produced endogenously in the plasma cells.

Abstract: The present invention provides methods and compositions for generating transgenic animals, including transgenic mammals, as well as plasma cells that allow for cell surface capture of secreted immunoglobulin molecules produced endogenously in the plasma cells.

Abstract: The present invention comprises non-human vertebrate cells and non-human mammals having a genome comprising an introduced partially human immunoglobulin region, said introduced region comprising human VH coding sequences and non-coding VH sequences based on the endogenous genome of the non-human mammal.

Abstract: The present invention comprises non-human vertebrate cells and non-human mammals having a genome comprising an introduced partially human immunoglobulin region, said introduced region comprising human VH coding sequences and non-coding VH sequences based on the endogenous genome of the non-human mammal.

Abstract: The invention provides compositions and methods for enhanced production of immunoglobulin diversity. Specifically, the invention provides compositions and methods for making accessible a B cell receptor repertoire that has not been culled by developmental tolerance mechanisms. The invention also provides transgenic animals, cells, and antibodies resulting from these compositions and methods.

Abstract: This application relates generally to the production of modified, non-natural ?1-?2 domains of NKG2D ligands with attached polypeptides having specific target-binding properties, for example, antibodies or variable fragments of antibodies, that are selectively delivered to Chimeric Antigen Receptors (CARs) comprised of modified, non-natural NKG2D receptors on engineered mammalian cells. The targeting of surface-expressed molecules includes those of virus-infected cells that can then be attacked and ablated by engineered cells of the immunity system expressing CARs cognate to the modified, non-natural ?1-?2 domains of NKG2D ligands with attached polypeptides.

Abstract: The invention provides compositions and methods for enhanced production of immunoglobulin diversity. Specifically, the invention provides compositions and methods for making accessible a B cell receptor repertoire that has not been culled by developmental tolerance mechanisms. The invention also provides transgenic animals, cells, and antibodies resulting from these compositions and methods.

Abstract: The present invention provides cells, transgenic animals, including transgenic mammals and particularly rodents, comprising engineered immunoglobulin alleles. Mutations in the alleles are designed to compromise allelic exclusion and have potential to be exploited for the isolation of bispecific antibodies.

Abstract: The present invention provides methods and compositions for generating transgenic animals, including transgenic mammals, as well as plasma cells that allow for cell surface capture of secreted immunoglobulin molecules produced endogenously in the plasma cells.

Abstract: This invention relates to transgenic vertebrates, and more specifically to transgenic vertebrates for the development of human therapeutics.

Abstract: The present invention comprises non-human vertebrate cells and non-human mammals having a genome comprising an introduced partially human immunoglobulin region, said introduced region comprising human VH coding sequences and non-coding VH sequences based on the endogenous genome of the non-human mammal.

Abstract: The invention provides transgenic non-human animals and transgenic non-human mammalian cells having at least one functionally disrupted lymphocyte transduction locus, particularly a CD4 locus, targeting constructs used to produce such transgenic stem cells and animals, methods and targeting constructs for inactivating or suppressing expression of endogenous lymphocyte transduction gene loci, transgenes encoding heterologous lymphocyte transduction proteins, and nonhuman animals that express a human lymphocyte transduction protein and lack expression of a cognate murine lymphocyte transduction protein.