In order to enhance visualization of soft tissues, a dual-imaging diagnostic polymersome system featured with highly hydrated multilamellar wall structure capable of simultaneously embedding a hydrophobic near-infrared fluorophore, Cy5.5, and a paramagnetic probe, gadolinium (Gd(III)) cations was developed. The polymersomes were obtained from the self-assembly of lipid-containing copolymer, poly(acrylic acid-co-distearin acrylate), in aqueous solution. The Cy5.5 and Gd(III) species were loaded into polymersomes via hydrophobic association (loading efficiency of Cy5.5 ca 74%) and electrostatic complexation (Gd(III) 83%), respectively. The Cy5.5/Gd(III)-loaded polymersomes (CGLPs) have shown excellent payload confinement, reduced dilution effect on assembly dissociation and decreased protein/salt-induced colloidal aggregation. Owing to the highly hydrated structure of vesicular membrane, the superior contrast enhancement of CGLPs in magnetic resonance (MR) imaging was obtained as a result of prolonged rotational correlation time of Gd(III) cations and fast water exchange from Gd(III) to bulk solution. The CGLPs exhibit a 15-fold higher longitudinal relaxivity value (ca 60mM(-1)s(-1)) than that (4mM(-1)s(-1)) of the commercial contrast agent, Magnevist, in phosphate buffered saline. The in vivo characterization demonstrates that CGLPs exhibit a signal-to-noise ratio in T1-weighted MR image contrast similar to that of Magnevist, yet with a Gd dose 5-fold lower. An excellent contrast in NIR imaging at tumor site was attained following the intravenous injection of GGLPs into Tramp-C1 tumor-bearing mice (C57BL/6). Along with their non-toxicity at the dose used, these results demonstrate the great potential of the CGLPs as an advanced diagnostic nanodevice.
Pharmacology, Toxicology and Pharmaceutical Science
3
8%
Neuroscience
2
5%
Medicine and Dentistry
2
5%
Other
8
22%
Unknown
13
35%
Attention Score in Context
Attention Score in Context
This research output has an Altmetric Attention Score of 6. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 25 April 2024.
All research outputs
#7,600,801
of 34,454,098 outputs
Outputs from Colloids & Surfaces B: Biointerfaces
#589
of 4,597 outputs
Outputs of similar age
#88,284
of 419,074 outputs
Outputs of similar age from Colloids & Surfaces B: Biointerfaces
#13
of 76 outputs
Altmetric has tracked 34,454,098 research outputs across all sources so far. This one has received more attention than most of these and is in the 73rd percentile.
So far Altmetric has tracked 4,597 research outputs from this source. They receive a mean Attention Score of 3.9. This one has done well, scoring higher than 76% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 419,074 tracked outputs that were published within six weeks on either side of this one in any source. This one has done well, scoring higher than 76% of its contemporaries.
We're also able to compare this research output to 76 others from the same source and published within six weeks on either side of this one. This one has gotten more attention than average, scoring higher than 73% of its contemporaries.
