Dendritic Polymer Applications in Drug Delivery Systems

Dendritic polymers, often referred to as dendrimers, are highly branched nanoscale macromolecules characterised by radial symmetry and a multi-generational architecture. Their defined interior cavities and functionalisable surface groups enable precise control over size, solubility, charge and multivalency. In drug delivery systems, these structural attributes confer several advantages: the ability to encapsulate hydrophobic or labile compounds within internal voids, the potential for covalent or supramolecular attachment of therapeutic agents to peripheral moieties, and the facilitation of targeted delivery through conjugation of ligands or antibodies. Generational tuning allows regulation of molecular weight and circulation time, while surface engineering mitigates cytotoxicity and enhances biocompatibility. Collectively, these features underpin the global significance of dendritic polymers in improving bioavailability, reducing off-target effects and enabling stimuli-responsive release mechanisms. Applications span oncology, where dendrimer–drug conjugates demonstrate enhanced solubility and tumour uptake, to gene therapy, utilising cationic dendrimers for nucleic acid complexation. Moreover, advances in imaging exploit dendrimers as contrast agents, expanding their utility beyond therapeutics to diagnostics. Interdisciplinary collaborations continue to refine synthesis methods and explore supramolecular assemblies, fostering the translation of dendritic platforms from bench to bedside.

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Dendritic Polymer Applications in Drug Delivery Systems publication trend

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Technical terms

Dendrimer: A synthetic, tree-like polymer with a central core, repeating branching units and terminal surface groups, used as a nanocarrier for therapeutic agents.

Generation: A designation of dendrimer growth stages, indicating the number of successive branching cycles and correlating with molecular size and surface group density.

Multivalency: The presence of multiple functional groups on a single dendrimer surface, enabling simultaneous interactions with several targets or ligands.

Encapsulation: The physical entrapment of drug molecules within the internal cavities of a dendrimer, enhancing solubility and protecting labile compounds.

Stimuli-responsive release: A mechanism by which drug–dendrimer conjugates or complexes release payloads in response to environmental triggers such as pH, temperature or enzymatic activity.

References

1. The application advances of dendrimers in biomedical field. View (2023).
2. Dendrimers as Nanocarriers for Nucleic Acid and Drug Delivery in Cancer Therapy. Molecules (2017).
3. Dendrimers: synthesis, applications, and properties. Discover Nano (2014).
4. Dendrimers for Drug Delivery. Molecules (2018).
5. Dendrimer-based drug delivery systems: history, challenges, and latest developments. Journal of Biological Engineering (2022).
6. Applications of Dendrimers in Drug Delivery Agents, Diagnosis, Therapy, and Detection. Journal of Nanomaterials (2014).
7. Impact of Dendrimers on Solubility of Hydrophobic Drug Molecules. Frontiers in Pharmacology (2017).
8. Poly(amidoamine) dendrimers: covalent and supramolecular synthesis. Materials Today Chemistry (2019).