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Unexpected role of hyaluronic acid in trafficking siRNA across cellular barrier: First biomimetic, anionic, non-viral transfection method

Research output: Contribution to journalArticleScientificpeer-review


Original languageEnglish
Pages (from-to)2815-2819
JournalAngewandte Chemie (International Edition)
Issue number9
Publication statusPublished - 25 Feb 2019
Publication typeA1 Journal article-refereed


Circulating nucleic acids, such as short interfering RNA (siRNA), regulate many biological processes; however, the mechanism by which these molecules enter the cell is poorly understood. The role of extracellular‐matrix‐derived polymers in binding siRNAs and trafficking them across the plasma membrane is reported. Thermal melting, dynamic light scattering, scanning electron microscopy, and computational analysis indicate that hyaluronic acid can stabilize siRNA via hydrogen bonding and Van der Waals interactions. This stabilization facilitated HA size‐ and concentration‐dependent gene silencing in a CD44‐positive human osteosarcoma cell line (MG‐63) and in human mesenchymal stromal cells (hMSCs). This native HA‐based siRNA transfection represents the first report on an anionic, non‐viral delivery method that resulted in approximately 60 % gene knockdown in both cell types tested, which correlated with a reduction in translation levels.

Publication forum classification

Field of science, Statistics Finland