The invention provides the use of mesenchymal stem cells for preparing drugs/medicines for the treatment of non-healing burn wounds. The inventor found that the mesenchymal stem cells of the present application are used to treat burn wounds and have significant curative effects. They can effectively promote the repair of hard-to-heal burn wounds, increase the healing rate of hard-to-heal burn wounds, and shorten wound healing time, with non-toxic side effects, easy absorption and other advantages. Therefore, the mesenchymal stem cells and the composition containing them can be used to prepare drugs/medicines for treating non-healing burn wounds.

The present disclosure encompasses engineered meganucleases that bind and cleave recognition sequences within a dystrophin gene. The present disclosure also encompasses methods of using such engineered meganucleases to make genetically modified cells. Further, the disclosure encompasses pharmaceutical compositions comprising engineered meganuclease proteins, or polynucleotides encoding engineered meganucleases of the disclosure, and the use of such compositions for the modification of a dystrophin gene in a subject, or for treatment of Duchenne Muscular Dystrophy.

The present disclosure provides compositions and methods for cell transplantation therapy based on forced expression of an exogenous HLA-F protein in donor cells to be transplanted into a subject. In some embodiments, the donor cells express an exogenous chimeric HLA-F protein comprising an extracellular region comprising an HLA-F alpha 1 domain, an HLA alpha 2 domain, an HLA-F alpha 3 domain, a linker and a β2m protein.

Provided herein are methods and compositions related to the in vivo testing of therapeutic agents comprising a human Fc in genetically modified rodents (e.g., the testing of the pharmacokinetic and/or pharmacodynamic properties of such a therapeutic agent in genetically modified rodents). In some embodiments the genetically modified rodents express antibodies comprising a human Fc (e.g., a human IgG1 Fc, a human IgG4 Fc). In some embodiments, the rodents express fully human antibodies (i.e., antibodies having human heavy chains and human light (γ or κ) chains). In certain embodiments the genetically modified rodents comprise one or more Fc receptors with a human extracellular domain (e.g., a Neonatal Fc Receptor (FcRn), a β-2-microglobulin polypeptide (β2M), a Fc ε receptor 1α (FcεR1α), a Fc γ receptor 1 alpha (FcγR1a), a Fc gamma receptor 2a (FcγR2a), a Fc gamma receptor 2b (FcγR2b), a Fc gamma receptor 3a (FcγR3a), a Fc gamma receptor 3b (FcγR3b), a Fc gamma receptor 2c (FcγR2c)). The transmembrane and cytoplasmic domain of such receptors can be human or non-human (e.g., rodent).

A rAAV vector is described herein which has an AAVhu68 capsid and at least one expression cassette in the capsid. The at least one expression cassette comprises nucleic acid sequences encoding a functional SMN protein and expression control sequences that direct expression of the SMN sequences in a host cell. Also provided are compositions containing this rAAVhu68.SMN vector and methods of using same for spinal muscular atrophy in a patient.

Genetically modified non-human animals expressing human SIRPα and human IL-15 from the non-human animal genome are provided. Also provided are methods for making non-human animals expressing human SIRPα and human IL-15 from the non-human animal genome, and methods for using non-human animals expressing human SIRPα and human IL-15 from the non-human animal genome. These animals and methods find many uses in the art, including, for example, in modeling human T cell and/or natural killer (NK) cell development and function, in modeling human pathogen infection of human T cells and/or NK cells, and in various in vivo screens.

A recombinant adeno-associated virus (rAAV) comprising an AAVhu68 capsid and a vector genome comprising a lysosomal beta-galactosidase gene (for example, galactosidase beta 1 gene, GBL1) is provided (i.e., rAAVhu68.GBL1). Also provided a composition containing an effective amount of rAAVhu68.GBL1 to ameliorate symptoms of GM1 gangliosidosis, including, e.g., increased average life span, decreased need for feeding tube, reduction in seizure incidence and frequency, reduction in progression towards neurocognitive decline and/or improvement in neurocognitive development.

The present invention relates to expression constructs and viral and other vectors for the treatment and/or prevention of chronic pain.

Genetically engineered bacteria, pharmaceutical compositions thereof, and methods of treating or preventing autoimmune disorders, inhibiting inflammatory mechanisms in the gut, and/or tightening gut mucosal barrier function are disclosed.

The present disclosure features useful compositions and methods to treat trinucleotide repeat expansion disorders, e.g., in a subject in need thereof. In some aspects, the compositions and methods described herein are useful in the treatment of disorders associated with OGG1 activity.