A multifunctional nanocarrier for encapsulation and delivery of short interfering RNA (siRNA) has been realized using cationic fluorescent polymer core-shell nanoparticles. The nanocarrier has good biocompatibility and high transfection efficiency over the most popular transfection reagent, Lipofectamine 2000. Fluorescence resonance energy transfer within the nanocarrier provides a non-invasive and label-free method to track the intracellular release of siRNA.
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http://dx.doi.org/10.1039/c4cc09685a | DOI Listing |
Anal Chem
January 2025
College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China.
The development of a sensory signal amplification approach is very crucial for rapid and precise detection of aflatoxin B (AFB). However, such approaches remain scarce due to the weak interactions between AFB and the sensing probes. Herein, the first example of a dual-excitation fluorescent platform for antibody-free AFB detection is reported, which is assembled by an ordered π-π stack of cationic perylene derivative (PTHA) and tris(2,2'-bipyridine)ruthenium(II) [Ru(bpy)].
View Article and Find Full Text PDFACS Appl Mater Interfaces
January 2025
Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111, United States.
Intracellular delivery of proteins can directly impact dysregulated and dysfunctional proteins and is a key step in the fast growing field of protein therapeutics. The vast majority of protein-delivery systems enter cells through endocytic pathways, but endosomal escape is a difficult and inefficient process, demanding fundamentally different methods of delivery. We report ultrasmall cationic molecularly imprinted nanoparticles that bind protein targets with high specificity through their uniquely distributed surface lysine groups.
View Article and Find Full Text PDFJ Am Soc Mass Spectrom
January 2025
Department of Physics and Astronomy, Aarhus University, Aarhus 8000, Denmark.
J Pharm Anal
December 2024
Institute of Infectious Disease and Infection Control, Jena University Hospital, Jena, 07747, Germany.
In our prior research, polymer nanoparticles (NPs) containing tobramycin displayed robust antibacterial efficacy against biofilm-embedded () and (. ) cells, critical pathogens in cystic fibrosis. In the current study, we investigated the deposition of a nanoparticulate carrier composed of poly(d,l-lactic--glycolic acid) (PLGA) and poly(ethylene glycol)--PLGA (PEG-PLGA) that was either covalently bonded with cyanine-5-amine (Cy5) or noncovalently bound with freely embedded cationic rhodamine B (RhB), which served as a drug surrogate.
View Article and Find Full Text PDFRSC Adv
January 2025
Nanoscience Program, Institute of Basic and Applied Sciences, Egypt-Japan University of Science and Technology New Borg El-Arab City Alexandria Egypt
We report herein a facile synthesis, characterization, and the electron transfer reaction of a novel light-harvesting material composed of laser-induced graphene (LIG) functionalized with the photoactive 5,10,15,20-tetrakis(4-trimethylammoniophenyl)porphyrin tetra(-toluenesulfonate) dye (TTMAPP). LIG was easily fabricated on the surface of a polyimide sheet using VersaLASER 3.6 (VLS 3.
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