41 results about "Meganuclease" patented technology

Disclosed are rationally-designed, non-naturally-occurring meganucleases in which a pair of enzyme subunits having specificity for different recognition sequence half-sites are joined into a single polypeptide to form a functional heterodimer with a non-palindromic recognition sequence. The invention also relates to methods of producing such meganucleases, and methods of producing recombinant nucleic acids and organisms using such meganucleases.

The invention relates to methods for the production of genetically modified plants using engineered meganucleases and elevated temperature and to genetically modified plants produced by such methods.

The invention provides methods for the production of transgenic animals comprising a recombinant Ig locus, as well as transgenic antibodies derived therefrom. The methods involve meganuclease cleavage-stimulated homologous recombination in mammalian embryos.

Rationally-designed LAGLIDADG meganucleases and methods of making such meganucleases are provided. In addition, methods are provided for using the meganucleases to generate recombinant cells and organisms having a desired DNA sequence inserted into a limited number of loci within the genome, as well as methods of gene therapy, for treatment of pathogenic infections, and for in vitro applications in diagnostics and research.

Disclosed are recombinant meganucleases engineered to recognize and cleave recognition sequences present in a mutant RHO P23H allele. The invention further relates to the use of such recombinant meganucleases in methods for treating retinitis pigmentosa, wherein the mutant RHO P23H allele is preferentially targeted, cleaved, and inactivated.

An Engineered Transgene Integration Platform (ETIP) is described that can be inserted randomly or at targeted locations in plant genomes to facilitate rapid selection and detection of a GOI that is perfectly targeted (both the 3' and 5' ends) at the ETIP genomic location. One element in the invention is the introduction of specific double stranded breaks within the ETIP. In some embodiments, an ETIP is described using zinc finger nuclease binding sites, but may utilize other targeting technologies such as meganucleases, TALs, CRISPRs, or leucine zippers. Also described are compositions of, and methods for producing, transgenic plants wherein the donor or payload DNA expresses one or more products of an exogenous nucleic acid sequence (e.g. protein or RNA) that has been stably-integrated into an ETIP in a plant cell. In embodiments, the ETIP facilitates testing of gene candidates and plant expression vectors from ideation through Development phases.

The present invention encompasses engineered meganucleases which recognize and cleave a recognition sequence within an open reading frame (ORF) of the genome of at least two genotypes of the Hepatitis B virus (HBV). The present invention also encompasses methods of using such engineered meganucleases in a pharmaceutical composition and in methods for treating or reducing the symptoms of a HBV infection, or treating hepatocellular carcinoma (HCC). Further, the invention encompasses pharmaceutical compositions comprising engineered meganuclease proteins, nucleic acids encoding engineered meganucleases, and the use of such compositions for treating HBV infections or HCC.

Targeted transcriptional effectors (transcription activators and transcription repressors) derived from meganucleases are described. Also described are nucleic acids encoding same, and methods of using same to regulate gene expression. The targeted transcriptional effectors can comprise (i) a meganuclease DNA-binding domain lacking endonuclease cleavage activity that binds to a target recognition site; and (ii) a transcription effector domain.