Effect of pre ‑freezing and saccharide types in freeze‑drying of siRNA lipoplexes on gene‑silencing effects in the cells by reverse transfection.

Effect of pre‑freezing and saccharide types in freeze‑drying of siRNA lipoplexes on gene‑silencing effects in the cells by reverse transfection. Mol Med Rep. 2020 Aug 05;: Authors: Tang M, Hu S, Hattori Y Abstract Our previous study reported that reverse (Rev)‑transfection with small interfering RNA (siRNA)/cationic liposome complexes (siRNA lipoplexes) freeze‑dried in trehalose or sucrose solution resulted in high gene‑silencing activity in cells. The current study investigated whether pre‑freezing or saccharide types present during the freeze‑drying of siRNA lipoplexes affected gene‑silencing in cells after Rev‑transfection. Three types of cationic cholesterol derivatives and three types of dialkyl or trialkyl cationic lipids were used for the preparation of cationic liposomes. Additionally, six types of siRNA lipoplexes were vacuum‑dried in trehalose or sucrose solution without a pre-freezing process in multi‑well plates. A strong gene‑silencing activity after Rev‑transfection was observed regardless of the cationic lipid types in the cationic liposomes. It was also investigated whether saccharide types in the freeze‑drying of siRNA lipoplexes affected gene‑silencing after Rev‑transfection. siRNA lipoplexes freeze‑dried in monosaccharides (glucose, fructose, galactose or mannose), disaccharides (maltose, lactose, lactulose or cellobiose) and trisaccharide solution (raffinose or melezitose) demon...
Source: Molecular Medicine Reports - Category: Molecular Biology Tags: Mol Med Rep Source Type: research