The present invention relates to organoids derived from a single cell, such as a prostate cancer cell, and methods and compositions relating to the production and use thereof, including cell culture medium for producing organoids and methods of personalized treatment for prostate cancer. The invention further provides a humanized mouse comprising a prostate organoid derived from a patient's prostate cell.

A composition and method for regulating the migration of immune cells. The method for regulating the migration of immune cells comprises the step of strengthening or weakening the interaction between Hsp90 and α4 integrin in immune cells. Also provided is an immune cell capable of strengthening or weakening the interaction between Hsp90 and α4 integrin and a pharmaceutical composition thereof. The present method and pharmaceutical composition may be used to treat pathogen infections and autoimmune diseases or to kill tumor cells.

The present disclosure relates to genetically modified non-human animals that express a human or chimeric (e.g., humanized) IL6R and/or IL6, and methods of use thereof.

The invention provides genetically modified non-human animals that express chimeric human/non-human MHC I and MHC II polypeptides and/or human or humanized β2 microglobulin polypeptide, as well as embryos, cells, and tissues comprising the same. Also provided are constructs for making said genetically modified animals and methods of making the same. Methods of using the genetically modified animals to study various aspects of human immune system are provided.

This invention relates to SARS-CoV-2 viruses adapted with nanoluciferase reporter molecules and mouse-adapted SARS-CoV-2 viruses, compositions including the same and methods of use thereof.

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.

Provided herein are methods for treating a disease or disorder associated with mitochondrial dysfunction through ex vivo introduction of a nucleic acid molecule into hematopoietic stem and progenitor cells (HSPCs) followed by transplantation of the HSPCs into a subject in need of treatment. The nucleic acid molecule may include a functional human frataxin (hFXN) or may include a gene editing system that when transfected into the cells removes a trinucleotide extension mutation of endogenous hFXN.

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.

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.

Genetically modified non-human animals and methods and compositions for making and using them are provided, wherein the genetic modification comprises a deletion of the endogenous low affinity FcγR locus, and wherein the mouse is capable of expressing a functional FcRγ-chain. Genetically modified mice are described, including mice that express low affinity human FcγR genes from the endogenous FcγR locus, and wherein the mice comprise a functional FcRγ-chain. Genetically modified mice that express up to five low affinity human FcγR genes on accessory cells of the host immune system are provided.