QUICKLY Understand Transfection

Learn that transfection is the process of artificially introducing nucleic acids (DNA or RNA) into cells without viral infection. This technique enables researchers to study gene function and protein expression within cells.

Explore transient transfection, where nucleic acids are introduced temporarily without integrating into the genome and are lost during cell division. Supercoiled DNA, siRNA, miRNA, mRNA, or proteins can be used, with detection lasting 1-7 days depending on the method.

Discover stable transfection, where foreign DNA integrates into the cellular genome or remains as episomal plasmid for permanent retention and cross-generational inheritance. Expression levels are typically lower than transient transfection since only a few DNA copies integrate.

Use selectable markers such as antibiotic resistance genes to identify and isolate successfully transfected cells. Alternatively, employ markers causing morphological or phenotypical changes to distinguish successful transfection cases from failures.

Utilize transfection to express proteins of interest in cultured cells using plasmid vectors or mRNA, enabling proper protein folding and post-translational modifications in eukaryotic cells. Additional applications include creating induced pluripotent stem cells (iPSCs) and therapeutic molecules.

Use transfection for gene inhibition through RNA interference (RNAi) techniques. This approach silences specific genes of interest for functional studies.