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VIDEO: Nanomedicines consisting of one molecule of oligonucleotide and one or two
molecules of Y-shaped block copolymer(s), of which the size is approximately
18 nm and is in dynamic equilibrium with free Y-shaped...
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Credit: 2021 Innovation Center of NanoMedicine
Summary
Ultra-small nanomedicines of approximately 18 nm were fabricated by dynamic ion-pairing between Y-shaped block copolymers and nucleic acid drugs, such as siRNA and antisense drugs.
Chemically modified and double-stranded oligonucleotides dramatically enhanced the stability of the ultra-small nanomedicines in the blood circulation.
The ultra-small size allows for high permeability in cancer tissues by slipping through the cracks in tumor vasculatures and stromal tissues.