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Gene delivery is the process of introducing foreign genetic material, such as DNA or RNA, into host cells. [1] Gene delivery must reach the genome of the host cell to induce gene expression . [ 2 ] Successful gene delivery requires the foreign gene delivery to remain stable within the host cell and can either integrate into the genome or ...
There are various methods of introducing foreign DNA into a eukaryotic cell: some rely on physical treatment (electroporation, cell squeezing, nanoparticles, magnetofection); others rely on chemical materials or biological particles (viruses) that are used as carriers. There are many different methods of gene delivery developed for various ...
The most common virus used for gene delivery come from adenoviruses as they can carry up to 7.5 kb of foreign DNA and infect a relatively broad range of host cells, although they have been known to elicit immune responses in the host and only provide short term expression.
For example, in higher vertebrates this can be accomplished by injecting the foreign DNA into the nucleus of a fertilized ovum. This technique is routinely used to introduce human disease genes or other genes of interest into strains of laboratory mice to study the function or pathology involved with that particular gene.
How vectors work to transfer genetic material. Gene therapy utilizes the delivery of DNA into cells, which can be accomplished by several methods, summarized below. The two major classes of methods are those that use recombinant viruses (sometimes called biological nanoparticles or viral vectors) and those that use naked DNA or DNA complexes (non-viral methods).
If the gene expresses close homology to a known gene in another species, then it could be isolated by searching for genes in the library that closely match the known gene. [19] For known DNA sequences, restriction enzymes that cut the DNA on either side of the gene can be used. Gel electrophoresis then sorts the fragments according to length. [20]
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