Dendrimers are highly branched macromolecules with a well-defined structure. Their distinct shape and size make them ideal carriers for drugs, allowing for controlled release and targeted delivery to specific cells or tissues. In recent years, drug delivery has been revolutionized by the development of dendrimers. These unique nanostructures can capsulize and deliver drugs with precision, offering targeted therapy with reduced side effects.

The power of dendrimers for drug delivery is reflected in:

·Drug encapsulation: Dendrimers can encapsulate drug molecules within their branches, protecting them from degradation or premature release in the body.

·Targeted drug delivery: Dendrimers can be functionalized with targeting ligands that recognize specific receptors or molecules on the surface of cells, allowing for precise delivery of drugs to the intended target site.

·Controlled release: Dendrimers can be designed to release drug molecules in a controlled manner, either through stimuli-responsive mechanisms or by tuning the dendrimer structure to release the drug at a specific rate.

·Improved drug solubility: Dendrimers can increase the solubility of poorly soluble drugs, allowing for better absorption and distribution in the body.

·Protection of drugs: Dendrimers can shield drug molecules from enzymatic degradation, immune recognition, or other harmful effects in the body, increasing the drug's stability and bioavailability.

·Multifunctional drug carriers: Dendrimers can be engineered to carry multiple drugs or imaging agents simultaneously, allowing for combination therapy or simultaneous drug delivery and monitoring of treatment response.

More than that, studies found that biodegradable dendrimers show potential as candidates for creating innovative smart drug delivery systems by combining the advantages of biodegradability with the unique structural characteristics of dendrimers. Over the years, numerous biodegradable dendrimers with varying structures and characteristics have been created for various purposes. Some of them were utilized in creating drug delivery systems either by physically enclosing or chemically linking drugs, and a few were able to be used as drugs themselves. Biodegradable dendrimers offer all the benefits of traditional dendrimers but have the added advantage of breaking down into smaller fragments that can be eliminated from the body through metabolism or excretion¹.

However, creating biodegradable dendrimers is still a difficult and costly process. This could be why there are fewer studies on their use compared to the research on their design and synthesis. There is a need for new methods to make innovative biodegradable dendrimers and more effective drug carriers using them. Once these challenges are overcome, the benefits of biodegradable dendrimers will be fully realized, potentially leading to a greater impact on the advancement of drug delivery systems.

In conclusion, dendrimers represent a promising approach to drug delivery, offering targeted therapy with enhanced efficacy and reduced side effects. The precise control over drug release and targeting provided by dendrimers holds great potential for revolutionizing the way we treat diseases, allowing for more effective and tailored therapies. With further exploration and innovation, dendrimers could pave the way for safer, more efficient, and more personalized treatment options for patients worldwide. Ultimately, the future of medicine may very well be shaped by the incredible capabilities of dendrimers in drug delivery.

Reference

1 Huang D, Wu D. Biodegradable dendrimers for drug delivery. Mater Sci Eng C Mater Biol Appl. 2018, 90: 713-727.