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The advent of CRISPR-Cas9 gene editing technology has led to the possibility of creating "designer babies." This technology has the possibility of eliminating certain genetic diseases, or improving health by enhancing certain genetic traits.
CRISPR gene editing is a revolutionary technology that allows for precise, targeted modifications to the DNA of living organisms. Developed from a natural defense mechanism found in bacteria, CRISPR-Cas9 is the most commonly used system.
The approach utilises the CRISPR-Cas9 gene editing system, coupled with libraries of single guide RNAs (sgRNAs), which are designed to target every gene in the genome. Over recent years, the genome-wide CRISPR screen has emerged as a powerful tool for performing large-scale loss-of-function screens, with low noise, high knockout efficiency and ...
These breaks can lead to gene inactivation or the introduction of heterologous genes through non-homologous end joining and homologous recombination respectively in many laboratory model organisms. Research on the development of various cas9 variants has been a promising way of overcoming the limitation of the CRISPR-Cas9 genome editing.
The cas9 complex, illustrating the gRNA, PAM and the double-stranded break induced in the target DNA. CRISPR (Clustered regularly interspaced short palindromic repeats)/Cas9 is a technique used for gene editing and gene therapy. Cas is an endonuclease enzyme that cuts DNA at a specific location directed by a guide RNA.
In particular CRISPR/Cas9 engineered endonucleases allows the use of multiple guide RNAs for simultaneous Knockouts (KO) in one step by cytoplasmic direct injection (CDI) on mammalian zygotes. [48] Furthermore, gene editing can be applied to certain types of fish in aquaculture such as Atlantic salmon.
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