CD44 targeted delivery of siRNA by using HA-decorated nanotechnologies for KRAS silencing in cancer treatment.

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2019
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Abstract
KRAS is a small GTPase that regulates cell proliferation and survival. In tumors, the KRAS gene is mutated, and leading to unregulated tumor growth. Despite the recognized importance of KRAS in cancer, attempts to develop small molecule inhibitors have proved unsuccessful. An alternative strategy is gene silencing and the use of small nucleic acid sequences (e.g. siRNA, shRNA), has been reported to successfully downregulate KRAS. In this study we developed ternary nanocomplexes to deliver an anti-KRAS siRNA to colorectal cancer cells, exploiting the interaction of hyaluronic acid (HA) with CD44 as a means to achieve selective targeting of CD44-positive cancer cells. Two different polycations, poly(hexamethylene biguanide) and chitosan, were complexed with siRNA and coated with HA. Physico-chemical properties and stability of nanoparticles were characterized, including size, surface charge, and degree of siRNA protection. We demonstrate nanoparticle internalization (flow cytometry), siRNA cytosolic release (confocal microscopy) and KRAS silencing (RT-qPCR) in CD44/KRAS colorectal cancer cell line, HCT-116. Further we demonstrate that the uptake of HA-decorated nanoparticles in cancer cells is higher when co-cultured with fibroblasts.
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tirella2019cd44 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Tirella, A;Kloc-Muniak, K;Good, L;Ridden, J;Ashford, M;Puri, S;Tirelli, N;
Journal International journal of pharmaceutics
Year 2019
DOI
S0378-5173(19)30155-3
URL
Keywords Keywords not found

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