Abstract:
Compositions and methods are provided for integrating one or more genes of interest into cellular DNA without substantially disrupting the expression of the gene at the locus of integration, i.e., the target locus. These compositions and methods are useful in any in vitro or in vivo application in which it is desirable to express a gene of interest in the same spatially and temporally restricted pattern as that of a gene at a target locus while maintaining the expression of the gene at the target locus, for example, to treat disease, in the production of genetically modified organisms in agriculture, in the large scale production of proteins by cells for therapeutic, diagnostic, or research purposes, in the induction of iPS cells for therapeutic, diagnostic, or research purposes, in biological research, etc. Reagents, devices and kits thereof that find use in practicing the subject methods are also provided.
Abstract:
The present disclosure provides variant adeno-associated virus (AAV) capsid polypeptides that provide an AAV particle with the ability to traverse the human blood brain barrier (BBB) and transduce cells of the CNS. In some embodiment, a subject variant AAV capsid protein includes an amino acid sequence having 95% or more sequence identity (e.g., 96% or more, 97% or more, 98% or more, 99% or more, 99.5% or more, or 100% sequence identity) with the amino acid sequence set forth in any one of SEQ ID NOs: 1-27. Also provided are nucleic acids, AAV vectors, viral particles, cells, kits, and methods.
Abstract:
The present disclosure provides methods and compositions for facilitating efficient adeno-associated virus (AAV)-based homologous recombination (HR). Subject methods include a step of contacting a cell (e.g., a population of cells) with a ribonucleotide reductase inhibitor, which provides for increased HR efficiency compared to performing HR in the absence of the inhibitor. The cell is also contacted with a recombinant adeno-associated virus (rAAV) that includes a donor DNA having a sequence cassette (i.e., a nucleotide sequence of interest) flanked by homology arms that facilitate integration of the sequence cassette into a target genomic locus via HR.
Abstract:
Compositions and methods are provided for achieving persistent, high level expression of transgenes in vitro and in vivo. Aspects of the invention include vectors comprising an intronic cassette that comprises plasmid elements, and methods that rely on the use of vectors comprising an intronic cassette that comprises plasmid elements. These compositions and methods find use in many applications, including therapeutic applications such as in gene therapy; synthesis applications such as in the synthesis of peptides, proteins, and RNAs, e.g. for research or therapeutic purposes; and research applications, such as in the production of transgenic cells and animals. In addition, reagents, devices and kits thereof that find use in making the subject compositions and practicing the subject methods are provided.
Abstract:
Methods and compositions are provided for editing the genome of a cell without the use of an exogenously supplied nuclease. Aspects of the methods include contacting a cell with a targeting vector comprising nucleic acid sequence to be integrated into the target locus, where the cell is not also contacted with a nuclease. In addition, reagents, devices and kits thereof that find use in practicing the subject methods are provided.
Abstract:
A method and apparatus for synthesizing nucleic acid (NA) by sequential addition of nucleotide triphosphates to a single stranded NA molecule (growing-chain) is described. The growing-chain is annealed to an oligonucleotide, wherein the 3' end of the oligonucleotide is complementary to the 3' end of the growing-chain and wherein the protruding 5' end of the oligonucleotide has the correct sequence to serve as a template for the growing-chain to produce a NA product. The growing-chain is then brought into contact with a polymerase in the presence of one or more nucleotide triphosphates under conditions permitting the polymerase to catalyze addition of one or more nucleotide triphosphates to the 3' end of the growing-chain using the annealed oligonucleotide as a template. After polymerization has occurred, the annealed growing-chain and oligonucleotide are denatured so that the steps can be repeated until the NA product of desired length is synthesized.
Abstract:
Human somatic cells are reprogrammed to become induced pluripotent stem cells (iPS cells) by the introduction of a minicircle DNA vector. Cells of interest include adipose stem cells.