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Endosomal explosion induced by hypertonicity enhances chitosan transfection

Wang, S.; Jin, S.; Li, G.; Sun, R.; Shu, Q.; Wu, S.

2019-08-09 biophysics
10.1101/730648 bioRxiv
Show abstract

Transferring DNA into cells to regulate cell function is a novel research field in recent decades. Chitosan is a gene vector with the properties of low-cost and safe, but high efficient delivery has remained challenging. We developed a strategy termed EEIH for endosomal explosion induced by hypertonicity, in which short-time exposure to hypertonic solutions triggers endosomes destabilization like explosions. EEIH can force chitosan/DNA polyplexes to break through the endosomal barriers to approach the nucleus, which results in boosting the transfection efficiency of chitosan in several cell lines. We demonstrate that EEIH is a significant and practical strategy in chitosan transfection system without sophisticated modification of chitosan.

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