Phosphorus-Containing Dendrimers in Nanomedicine

Phosphorus-containing dendrimers are a class of highly branched, nanoscale macromolecules characterised by a core–branch–periphery architecture in which phosphorus atoms occupy strategic positions within the scaffold. This structural motif affords precise control over size, charge density and surface functionality, enabling these dendrimers to serve as versatile platforms for drug delivery, gene transport, imaging and immunomodulation. The inclusion of phosphorus not only imparts unique physicochemical properties—such as rigidity, biodegradability and multivalent interaction potential—but also facilitates the conjugation of therapeutic payloads through phosphorhydrazone or phosphonate linkages. In nanomedicine, these dendrimers have demonstrated the capacity to traverse biological barriers, target specific cell populations and modulate cellular responses, thus offering promise in areas ranging from cancer therapy and neuroprotection to anti-inflammatory interventions. Their well-defined architecture minimises batch variability, while their multivalent surface enables the fine-tuning of biodistribution, cellular uptake and payload release kinetics. Collectively, research on phosphorus-containing dendrimers underscores their global significance as next-generation nanocarriers with the potential to enhance treatment efficacy, reduce off-target toxicity and address unmet clinical needs.

Research from Nature Portfolio

Foundational work has elucidated how the internal phosphorus-rich scaffold of dendrimers critically influences biological activity beyond the contribution of peripheral groups. Through a combination of molecular dynamics simulations and cellular assays, researchers demonstrated that variations in the branching architecture modulate interactions with immune cells, affecting both cellular uptake and activation thresholds. This insight has shifted the design paradigm from focusing solely on terminal functionalities towards an integrated approach that considers scaffold rigidity and branching density as key determinants of nanomedicine performance.

Phosphorus-Containing Dendrimers in Nanomedicine publication trend

The graph below shows the total number of articles in phosphorus-containing dendrimers in nanomedicine across all publications each year (not limited to Nature Index journals).

Technical terms

Dendrimer: A monodisperse, hyperbranched polymer with a tree-like architecture composed of a central core, successive branching layers and reactive surface groups.

Phosphorus-containing dendrimer: A dendrimer in which phosphorus atoms are incorporated into branching linkages or terminal groups, conferring unique chemical and biological properties.

Nanomicelle: A self-assembled nanoscale colloidal structure formed by amphiphilic molecules or dendrons, featuring a hydrophobic core for drug loading and a hydrophilic shell for aqueous stability.

siRNA: Short interfering RNA molecules that induce sequence-specific degradation of complementary messenger RNA, enabling targeted gene silencing.

Reactive oxygen species (ROS): Highly reactive, oxygen-containing molecules generated during cellular metabolism that can cause oxidative damage if not regulated.

References

1. Fourth Generation Phosphorus-Containing Dendrimers: Prospective Drug and Gene Delivery Carrier. Pharmaceutics (2011).
2. The key role of the scaffold on the efficiency of dendrimer nanodrugs. Nature Communications (2015).
3. Phosphorus dendron nanomicelles as a platform for combination anti-inflammatory and antioxidative therapy of acute lung injury. Theranostics (2022).
4. Phosphorus Dendrimers as Nanotools against Cancers†. Molecules (2020).
5. Multi-Target Inhibition of Cancer Cell Growth by SiRNA Cocktails and 5-Fluorouracil Using Effective Piperidine-Terminated Phosphorus Dendrimers. Colloids and Interfaces (2017).