Smart inflammation sensitive self-reporting theragnosis
2014 (English)In: FEBS-EMBO 2014 Congress, 2014Conference paper, Abstract (Other academic)
We have designed and develop a novel class of nanocomposites for inflammation based hallmark functions using biocompatible metallic nano-objects (SPION, nanorod) assembled with a pH sensitive amphiphilic azide terminated block polymer, polystyrene-b-poly (acrylic acid) and temperature-responsive polymer Poly (N-isopropylacrylamide) (PNIPAAm) in a single nanoscopic platform. The nano-architecture is a uniform core-shell micellar assembly of polymer around the biocompatible metallic core. Doxorubicin and methotrexate are loaded within the architecture as the model therapeutic module. The drugs are linked through pH and enzyme sensitive bonds. The complete nano-architecture and linkages are characterized by electron microscopy, NMR and Photon Correlation Spectroscopy. The drug release response has been optimized with different cell line in vitro. The model suggest that change/increase in temperature, reduction of pH and the redox enzymatic activities are increased at the localized inflammatory sites, can be addressed by the developed module and the drug will be released at the inflammation sites only due to their specific linkage to the module. Again we have explored order–disorder micellar structures dependent T1 & T2 MRI properties of the module. This results indicate that the fabricated module can also be useful not only probing the inflammation site non invasively through MRI but also will give us idea on the extent of release of drugs at the inflammation sites. The outcomes of these results elucidate the potential of this fabricated nano-architecture for smart theranostics through physicochemical and microenvironment feature based drug delivery, site-specific therapy, real-time probing and non-invasive monitoring of the drug action course for personalized therapy.
Place, publisher, year, edition, pages
IdentifiersURN: urn:nbn:se:liu:diva-108434OAI: oai:DiVA.org:liu-108434DiVA: diva2:730333
FEBS-EMBO 2014 Congress, 30 August - 4 September 2014, Paris, France