Multimodal polymer nanoparticles with combined 19F magnetic resonance and optical detection for tunable, targeted, multimodal imaging in vivo.
Understanding the complex nature of diseased tissue in vivo requires development of more advanced nanomedicines, where synthesis of multifunctional polymers combines imaging multimodality with a biocompatible, tunable, and functional nanomaterial carrier. Here we describe the development of polymeric nanoparticles for multimodal imaging of disease states in vivo. The nanoparticle design utilizes the abundant functionality and tunable physicochemical properties of synthetically robust polymeric systems to facilitate targeted imaging of tumors in mice. For the first time, high-resolution (19)F/(1)H magnetic resonance imaging is combined with sensitive and versatile fluorescence imaging in a polymeric material for in vivo detection of tumors. We highlight how control over the chemistry during synthesis allows manipulation of nanoparticle size and function and can lead to very high targeting efficiency to B16 melanoma cells, both in vitro and in vivo. Importantly, the combination of imaging modalities within a polymeric nanoparticle provides information on the tumor mass across various size scales in vivo, from millimeters down to tens of micrometers.
Australian Institute for Bioengineering and Nanotechnology and ‡Centre for Advanced Imaging, The University of Queensland , St Lucia, Queensland 4072, Australia.
Barbara E
BE
Rolfe
Idriss
I
Blakey
Oliver
O
Squires
Hui
H
Peng
Nathan R B
NR
Boase
Cameron
C
Alexander
Peter G
PG
Parsons
Glen M
GM
Boyle
Andrew K
AK
Whittaker
Kristofer J
KJ
Thurecht
D000818:Animals; D045744:Cell Line, Tumor; D002478:Cells, Cultured; D005462:Fluorine Radioisotopes; D051379:Mice; D018613:Microscopy, Confocal; D064847:Multimodal Imaging; D053758:Nanoparticles / Q000737:chemistry; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry
D005462:Fluorine Radioisotopes; D011108:Polymers