Importance of size-to-charge ratio in construction of stable and uniform nanoscale RNA/dendrimer complexes
作者:Xin-Cheng Shen、Jiehua Zhou、Xiaoxuan Liu、Jiangyu Wu、Fanqi Qu、Zhi-Ling Zhang、Dai-Wen Pang、Gilles Quéléver、Cheng-Cai Zhang、Ling Peng
DOI:10.1039/b711242d
日期:——
Formation of RNA/dendrimer complexes between various RNA molecules and PAMAM dendrimers was studied using atomic force microscopy. Our results demonstrate that effective construction of stable nanoscale and uniform RNA/dendrimer complexes depends critically on the size of the RNA molecule, the dendrimer generation and the charge ratio between the dendrimer and the RNA. Larger RNA molecules, higher generations of dendrimers and larger dendrimer-to-RNA charge ratios lead to the formation of stable, uniform nanoscale RNA/dendrimer complexes. These findings provide new insights in developing dendrimer systems for RNA delivery.
利用原子力显微镜研究了不同RNA分子与PAMAM树枝状大分子之间形成RNA/树枝状大分子复合物的情况。我们的结果表明,构建稳定、纳米尺度且均匀的RNA/树枝状大分子复合物,关键取决于RNA分子的大小、树枝状大分子的代数以及树枝状大分子与RNA之间的电荷比。较大的RNA分子、更高代的树枝状大分子和更大的树枝状大分子与RNA的电荷比,会促成稳定、均匀的纳米尺度 RNA/树枝状大分子复合物的形成。这些发现为开发用于RNA传递的树枝状大分子系统提供了新的见解。