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Unraveling the effects of siRNA carrier systems on cell physiology: a multiparametric approach demonstrated on dextran nanogels

(2014) NANOMEDICINE. 9(1). p.61-76
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Center for nano- and biophotonics (NB-Photonics)
Abstract
Aim: The extent of cell-nanoparticle interactions between a polycationic siRNA nanocarrier system (dextran nanogels) and cultured cells was analyzed. Materials & methods: A multiparametric methodology is introduced to examine the cytotoxic effects of a model siRNA carrier (dextran nanogels) on different cell types, including primary human cells. Using this methodology, the nontoxic concentration of nanogels could be defined and the mechanisms contributing to their toxic profile were unraveled. Results: Above the toxicity threshold, nanogels were found to induce oxidative stress and destabilize the plasma membrane. Furthermore, nanogel-induced cellular stress led to DNA damage, impeded cell functionality and intracellular signaling, resulting in unspecific regulation of gene expression. Conclusion: This methodology shows that current toxicity assays such as the 3-(4,5-dimethylthiazol-2yl-)-2,5-diphenyl tetrazolium bromide assay are not adequate to assess the full spectrum of cell-nanoparticle interactions and more in-depth studies are required.
Keywords
IN-VIVO, DELIVERY, TOXICITY, QUANTUM DOTS, GOLD NANOPARTICLES, INORGANIC NANOPARTICLES, toxicity mechanism, siRNA delivery carrier, nanotoxicity, oxidative stress, genotoxicity, nanogel, cell viability, NF-KAPPA-B, MECHANISMS, GENE-EXPRESSION, NANOTOXICITY

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Citation

Please use this url to cite or link to this publication:

Chicago
Soenen, Stefaan, Lynn De Backer, Bella Manshian, Shareen Doak, Koen Raemdonck, Jo Demeester, Kevin Braeckmans, and Stefaan De Smedt. 2014. “Unraveling the Effects of siRNA Carrier Systems on Cell Physiology: a Multiparametric Approach Demonstrated on Dextran Nanogels.” Nanomedicine 9 (1): 61–76.
APA
Soenen, S., De Backer, L., Manshian, B., Doak, S., Raemdonck, K., Demeester, J., Braeckmans, K., et al. (2014). Unraveling the effects of siRNA carrier systems on cell physiology: a multiparametric approach demonstrated on dextran nanogels. NANOMEDICINE, 9(1), 61–76.
Vancouver
1.
Soenen S, De Backer L, Manshian B, Doak S, Raemdonck K, Demeester J, et al. Unraveling the effects of siRNA carrier systems on cell physiology: a multiparametric approach demonstrated on dextran nanogels. NANOMEDICINE. 2014;9(1):61–76.
MLA
Soenen, Stefaan, Lynn De Backer, Bella Manshian, et al. “Unraveling the Effects of siRNA Carrier Systems on Cell Physiology: a Multiparametric Approach Demonstrated on Dextran Nanogels.” NANOMEDICINE 9.1 (2014): 61–76. Print.
@article{4253025,
  abstract     = {Aim: The extent of cell-nanoparticle interactions between a polycationic siRNA nanocarrier system (dextran nanogels) and cultured cells was analyzed.
Materials \& methods: A multiparametric methodology is introduced to examine the cytotoxic effects of a model siRNA carrier (dextran nanogels) on different cell types, including primary human cells. Using this methodology, the nontoxic concentration of nanogels could be defined and the mechanisms contributing to their toxic profile were unraveled.
Results: Above the toxicity threshold, nanogels were found to induce oxidative stress and destabilize the plasma membrane. Furthermore, nanogel-induced cellular stress led to DNA damage, impeded cell functionality and intracellular signaling, resulting in unspecific regulation of gene expression.
Conclusion: This methodology shows that current toxicity assays such as the 3-(4,5-dimethylthiazol-2yl-)-2,5-diphenyl tetrazolium bromide assay are not adequate to assess the full spectrum of cell-nanoparticle interactions and more in-depth studies are required.},
  author       = {Soenen, Stefaan and De Backer, Lynn and Manshian, Bella and Doak, Shareen and Raemdonck, Koen and Demeester, Jo and Braeckmans, Kevin and De Smedt, Stefaan},
  issn         = {1743-5889},
  journal      = {NANOMEDICINE},
  keyword      = {IN-VIVO,DELIVERY,TOXICITY,QUANTUM DOTS,GOLD NANOPARTICLES,INORGANIC NANOPARTICLES,toxicity mechanism,siRNA delivery carrier,nanotoxicity,oxidative stress,genotoxicity,nanogel,cell viability,NF-KAPPA-B,MECHANISMS,GENE-EXPRESSION,NANOTOXICITY},
  language     = {eng},
  number       = {1},
  pages        = {61--76},
  title        = {Unraveling the effects of siRNA carrier systems on cell physiology: a multiparametric approach demonstrated on dextran nanogels},
  url          = {http://dx.doi.org/10.2217/nnm.12.208},
  volume       = {9},
  year         = {2014},
}

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