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      1. Author :
        Lee, S. K.; Han, M. S.; Asokan, S.; Tung, C. H.
      2. Title :
      3. Type :
        Journal Article
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      11. Keywords :
        LnCaP-luc2, Prostate Cancer, IVIS, *Gene Silencing; *Gold; Metal Nanoparticles/*chemistry/ultrastructure; Microscopy, Electron, Transmission; Polylysine/chemistry; RNA, Small Interfering/*genetics
      12. Abstract :
        Small interfering RNA (siRNA) has been widely proposed to treat various diseases by silencing genes, but its delivery remains a challenge. A well controlled assembly approach is applied to prepare a protease-assisted nanodelivery system. Protease-degradable poly-L-lysine (PLL) and siRNA are fabricated onto gold nanoparticles (AuNPs), by alternating the charged polyelectrolytes. In this study, up to 4 layers of PLL and 3 layers of siRNA (sR3P) are coated. Due to the slow degradation of PLL, the incorporated siRNA is released gradually and shows extended gene-silencing effects. Importantly, the inhibition effect in cells is found to correlate with the number of siRNA layers.
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      14. Call Number :
        PKI @ kd.modi @ 1
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