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Lipofectamine or Lipofectamine 2000 is a common transfection reagent, produced and sold by Invitrogen, used in molecular and cellular biology. [1] It is used to increase the transfection efficiency of RNA (including mRNA and siRNA) or plasmid DNA into in vitro cell cultures by lipofection. [1]
Thermo Fisher Scientific's previous headquarters in Waltham, Massachusetts Thermo Fisher Scientific office in Canada. Thermo Fisher Scientific Inc. is an American life, science and clinical research company.
Transfection is the process of deliberately introducing naked or purified nucleic acids into eukaryotic cells. [1] [2] It may also refer to other methods and cell types, although other terms are often preferred: "transformation" is typically used to describe non-viral DNA transfer in bacteria and non-animal eukaryotic cells, including plant cells.
The use of cationic lipids for transfection began in the 1980s [69], was termed "lipofection", and became the basis for the popular product lipofectamine launched in 1993. Other cationic transfection reagents were developed in the 1990s based on dendrimers such as PAMAM [ 70 ] in 1993 (“superfect” reagent launched in late 1990s) and ...
DMG-PEG 2000 is a synthetic lipid formed by the PEGylation of myristoyl diglyceride. It is used to manufacture lipid nanoparticles that are used in mRNA vaccines , [ 1 ] and in particular forms part of the drug delivery system for the Moderna COVID-19 vaccine .
A transformation efficiency of 1×10 8 cfu/μg for a small plasmid like pUC19 is roughly equivalent to 1 in 2000 molecules of the plasmid used being introduced into cells. In E. coli , the theoretical limit of transformation efficiency for most commonly used plasmids would be over 1×10 11 cfu/μg.
DIPEA is a sterically hindered organic base that is commonly employed as a proton scavenger. Thus, like 2,2,6,6-tetramethylpiperidine and triethylamine, DIPEA is a good base but a poor nucleophile, DIPEA has low solubility in water, which makes it very easily recovered in commercial processes, a combination of properties that makes it a useful organic reagent.
Gene transfer is more successful in-gel than on-gel probably because of proximity of lipoplexes and target cells. Less cytotoxicity is observed due to less use of transfection agents like lipofectamine and steady degradation of fibrin. Consequently, each cell type requires optimization of fibrinogen and pDNA concentrations for higher ...
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