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A lentivirus stable cell line is a cell line that has been engineered to stably express a lentiviral vector. To create a lentiviral transduction stable cell line, cells are typically transduced with lentiviral particles containing the desired gene of interest. The lentiviral vector integrates into the host cell's genome, leading to stable expression of the gene in the cell line. This allows researchers to study the effects of the gene of interest in a controlled and reproducible manner.

The crispr cas 9 plasmid system is a gene editing technology based on the modification of adaptive immunity mechanisms in prokaryotes. It consists of two modules, one is the gRNA and its backbone that recognise specific DNA sequences, the other is Cas9, a protein that binds and edits DNA. Since its invention, the technology has developed rapidly. Nowadays, cas9 grna plasmid and its variants are widely used in various fields, such as editing, detecting, labelling, and imaging of nucleic acids in live cells. The technology has revolutionised the way basic life sciences and biomedicine are researched due to its efficiency and ease of use in different species. The inventor of the technology was also awarded the 2020 Nobel Prize in Chemistry. Today the crispr cas virus system is still thriving, with broad prospects and deep potential both in basic science research and in clinical applications such as gene therapy and cell therapy.