Related Experiment Video

Updated: Jun 4, 2026

Enhanced Gene Delivery and Expression using Intraosseous Injection of Chitosan Nanoparticles Encapsulated Adenine Base Editor Plasmids
07:14

Enhanced Gene Delivery and Expression using Intraosseous Injection of Chitosan Nanoparticles Encapsulated Adenine Base Editor Plasmids

Published on: May 16, 2025

Effect of chitosan chain architecture on gene delivery: comparison of self-branched and linear chitosans

Jostein Malmo1, Kjell M Vårum, Sabina P Strand

  • 1Department of Biotechnology, Norwegian Biopolymer Laboratory (NOBIPOL), Norwegian University of Science and Technology (NTNU), N-7491 Trondheim, Norway.

Biomacromolecules
|February 8, 2011
PubMed

More Related Videos

Preparation and Characterization of SDF-1α-Chitosan-Dextran Sulfate Nanoparticles12:00

Preparation and Characterization of SDF-1α-Chitosan-Dextran Sulfate Nanoparticles

Published on: January 22, 2015

Gene-therapy Inspired Polycation Coating for Protection of DNA Origami Nanostructures08:30

Gene-therapy Inspired Polycation Coating for Protection of DNA Origami Nanostructures

Published on: January 19, 2019

Related Concept Videos

Polymer Classification: Architecture01:14

Polymer Classification: Architecture

Polymers are classified as linear or branched on the basis of their chain architecture. The polymer chains in linear polymers have a long chain-like structure with minimal to no branching at all. Even if a polymer features large substituent groups on the monomer, which appear as branches to the skeleton, it is not considered a branched polymer. A branched polymer contains secondary polymer chains that arise from the main polymer chain. The branching occurs when the polymer growth shifts from...
Radical Chain-Growth Polymerization: Chain Branching01:17

Radical Chain-Growth Polymerization: Chain Branching

The skeletal structure of polymers synthesized via radical polymerization is always branched. For example, the polymerization of ethylene by radical polymerization results in a low-density grade of polyethylene with a heavily branched skeletal structure. Here, the radical site abstracts hydrogen from the growing chain, and the radical site shifts from the end (a primary carbon center) to anywhere within the growing chain (a secondary carbon center). Consequently, the part of the chain from the...
Site-Targeted Drug Delivery Systems: Polymeric Carriers01:24

Site-Targeted Drug Delivery Systems: Polymeric Carriers

Polymeric carriers enhance targeted drug delivery by increasing efficacy while minimizing off-target effects. These carriers comprise a biodegradable polymeric backbone integrated with functional elements that enable targeting, improve physicochemical properties, and regulate drug release.Targeting MechanismsThe targeting ability of polymeric carriers is mediated by a homing device, which is a molecular recognition component designed to selectively bind to specific tissues or cells. Monoclonal...
Anionic Chain-Growth Polymerization: Mechanism01:04

Anionic Chain-Growth Polymerization: Mechanism

The mechanism for anionic chain-growth polymerization involves initiation, propagation, and termination steps. In the initiation step, a nucleophilic anion, such as butyl lithium, initiates the polymerization process by attacking the π bond of the vinylic monomer. As a result, a carbanion, stabilized by the electron‐withdrawing group, is generated. The resulting carbanion acts as a Michael donor in the propagation step and attacks the second vinylic monomer, which acts as a Michael acceptor.
Anionic Chain-Growth Polymerization: Overview01:20

Anionic Chain-Growth Polymerization: Overview

The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...