Precision genetic engineering based on stable chromo- somal insertion of exogenous DNA in the genomes of large mammals is immensely important for the develop- ment of improved biomedical models, pharmaceutical research and an accelerated breeding progress. Precision genetic engineering requires (i) a known locus of genomic integration, (ii) a defined status of foreign DNA, (iii) that transgene expression is unaffected by neighbouring chro- mosomal sequences, (iv) endogenous genes are not mu- tated and (v) no unwanted DNA sequences are present. Recently, advanced molecular techniques exploiting exogenous enzymes have opened the possibilities for more sophisticated genetic engineering. Here, we critical- ly review current developments of enzyme-catalysed approaches for targeted transgenesis in large mammals.
Precision genetic engineering based on stable chromo- somal insertion of exogenous DNA in the genomes of large mammals is immensely important for the develop- ment of improved biomedical models, pharmaceutical research and an accelerated breeding progress. Precision genetic engineering requires (i) a known locus of genomic integration, (ii) a defined status of foreign DNA, (iii) that transgene expression is unaffected by neighbouring chro- mosomal sequences, (iv) endogenous genes are not mu- tated and (v) no unwanted DNA sequences are present. Recently, advanced molecular techniques exploiting exogenous enzymes have opened the possibilities for more sophisticated genetic engineering. Here, we critical- ly review current developments of enzyme-catalysed approaches for targeted transgenesis in large mammals.
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