The present invention provides certain donor animals, tissues and cells that are particularly useful for xenotransplantation therapies. In particular, the invention includes porcine animals, as well as tissue and cells derived from these, which lack any expression of functional alpha 1,3 galactosyltransferase (aGT) and express one or more additional transgenes which make these animals suitable donors for xenotransplantation of vascularized xenografts and derivatives thereof. Methods of treatment and using organs, tissues and cells derived from such animals are also provided.

Disclosed herein are methods and compositions for the diagnosis and treatment of Vascular Associated Maculopathy, or a symptom thereof, in a subject. Disclosed herein are methods and compositions for the diagnosis and treatment of one or more symptoms associated with Vascular Associated Maculopathy Disclosed in a subject. Disclosed herein are methods and compositions for the diagnosis and treatment of severe maculopathy or late stage maculopathy in a subject. Disclosed herein are methods and compositions for the diagnosis and treatment of resolving aberrant choriocapillaris lobules in a subject.

The present invention provides a non-human animal having human interleukin-34 (IL-34) in the body thereof; a method for producing a non-human animal having human microglia, which includes transplanting human CD34-positive hematopoietic stem cells into the non-human animal having human IL-34 in the body; and a method for producing human microglia, which includes obtaining human microglia from the non-human animal having human microglia.

The present invention relates to a polynucleotide comprising an expressible nucleic acid sequence encoding a relaxin family peptide receptor (RXFP) polypeptide for use in treatment and/or prevention of heart failure in a subject. The present invention further relates to a vector comprising the polynucleotide of the present invention for use in treatment and/or prevention of heart failure, as well as to host cells, RXFP agonists, kits and devices related thereto.

Compositions comprising nuclear-localised Akt1 (Akt-NLS) fusion proteins, and methods of use thereof in cellular and animal models, and for treating muscle pathologies.

The invention provides non-human cells and mammals having a genome encoding chimeric antibodies and methods of producing transgenic cells and mammals. Certain aspects of the invention include chimeric antibodies, humanized antibodies, pharmaceutical compositions and kits. Certain aspects of the invention also relate to diagnostic and treatment methods using the antibodies of the invention.

A method of producing a transgenic silkworm that spins bagworm silks and producing a large quantity of bagworm silks by transgenic technology is developed and provided. A gene encoding a modified bagworm Fib H and a transgenic silkworm in which the gene is introduced, wherein the gene is obtained by cloning a gene fragment encoding a bagworm Fib H-like polypeptide comprising a partial amino acid sequence of bagworm Fib H, and fusing the gene fragment to a gene fragment encoding silkworm-derived Fib H, are provided.

Non-human animals (and/or non-human cells) and methods of using the same are provided, which non-human animals (and/or non-human cells) have a genome comprising human antibody-encoding sequences (i.e., immunoglobulin genes). Non-human animals described herein express antibodies that contain immunoglobulin (Ig) light chains characterized by the presence of human Vλ domains. Non-human animals provided herein are, in some embodiments, characterized by expression of antibodies that contain human Vλ light chains that are encoded by human Igλ light chain-encoding sequences inserted into an endogenous Igκ light chain locus of said non-human animals Methods for producing antibodies from non-human animals are also provided, which antibodies contain human variable regions and mouse constant regions.

Artificial expression constructs for selectively modulating gene expression in selected central nervous system cell types are described. The artificial expression constructs can be used to selectively express synthetic genes or modify gene expression in GABAergic interneurons.

Provided herein are transgenic non-human animals whose genomes comprise two or more human genes selected from CD33, Siglec-5, Siglec-7, Siglec-9, Siglec-11, Siglec-14, and Siglec-16, to methods of screening candidate agents that bind to and/or modulate the function and/or activity of at least one of the human genes in the transgenic non-human animals, and to methods of screening candidate agents to determine their effect on one or more activities and/or functions associated with expression of at least one of the human genes in the transgenic non-human animals. Further provided herein are methods of recapitulating a human Siglec immune system in a non-human animal, and methods of generating a non-human animal disease model comprising a human Siglec repertoire.