title: Design and optimization of lipid-modified poly(amidoamine) dendrimer coated iron oxide nanoparticles as probes for biomedical applications.
abstract: Superparamagnetic iron oxide nanoparticles with a wide size range (2.6-14.1 nm) were synthesized and coated with the amphiphilic poly(amidoamine) PAMAM-C12 dendrimer. The resulting well dispersed and stable water suspensions were fully characterized in order to explore their possible use in biomedical applications. The structural and magnetic properties of the nanoparticles were preserved during the coating and were related to their relaxometric behaviour. The Nuclear Magnetic Resonance Dispersion (NMRD) profiles were found to be in accordance with the Roch model. The biocompatibility was assessed by means of cell viability tests and Transmission Electron Microscopy (TEM) analysis. The nanoparticles' capability of being detected via Magnetic Resonance Imaging (MRI) was investigated by means of clinical MRI scanners both in water and agar gel phantoms, and in a mouse model.
authors: Istituto Italiano di Tecnologia, Center for Nanotechnology Innovation @NEST, Piazza San Silvestro 12, 56127 Pisa, Italy. adriano.boni@iit.it.
authors: A
authors: A
authors: Boni
authors: G
authors: G
authors: Bardi
authors: A
authors: A
authors: Bertero
authors: V
authors: V
authors: Cappello
authors: M
authors: M
authors: Emdin
authors: A
authors: A
authors: Flori
authors: M
authors: M
authors: Gemmi
authors: C
authors: C
authors: Innocenti
authors: L
authors: L
authors: Menichetti
authors: C
authors: C
authors: Sangregorio
authors: S
authors: S
authors: Villa
authors: V
authors: V
authors: Piazza
mesh_terms: D000818:Animals; D045744:Cell Line, Tumor; D002470:Cell Survival / Q000187:drug effects; D003287:Contrast Media / Q000737:chemistry / Q000378:metabolism; D050091:Dendrimers / Q000737:chemistry*; D005290:Ferric Compounds / Q000737:chemistry*; D006207:Half-Life; D006801:Humans; D008279:Magnetic Resonance Imaging; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000633:toxicity; D051379:Mice; D018613:Microscopy, Confocal; D046529:Microscopy, Electron, Transmission; D051381:Rats; D017208:Rats, Wistar; D014018:Tissue Distribution
chemical_list: D003287:Contrast Media; D050091:Dendrimers; D005290:Ferric Compounds; C104700:PAMAM Starburst; C000499:ferric oxide