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Updated: Jan 22, 2026

Models and Methods to Evaluate Transport of Drug Delivery Systems Across Cellular Barriers
Published on: October 17, 2013
Evolution of macromolecular complexity in drug delivery systems
Ashok Kakkar1,2, Giovanni Traverso1,3, Omid C Farokhzad4
1Harvard-MIT Division of Health Sciences, Department of Chemical Engineering, Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA.
Developing targeted therapeutics faces delivery challenges. Macromolecules offer improved drug delivery, overcoming barriers to enhance therapeutic outcomes and fulfill unmet needs in nanomedicine.
Area of Science:
- Biomedical Engineering
- Materials Science
- Pharmacology
Background:
- Drug design faces significant challenges, particularly in achieving selective in vivo delivery to biological targets.
- Lack of targeted delivery often necessitates higher drug doses, leading to adverse side effects.
Purpose of the Study:
- To review the evolution of drug delivery strategies.
- To examine the role of complex macromolecular architectures in overcoming drug delivery barriers.
- To discuss the potential of advanced drug delivery in nanomedicine.
Main Methods:
- Literature review of drug delivery approaches.
- Analysis of macromolecular architectures for drug encapsulation and conjugation.
- Discussion of nanomedicine applications.
Main Results:
- Macromolecular encapsulation and conjugation have emerged as key strategies for improved drug delivery.
- Increasing complexity in macromolecular design enhances delivery efficiency and target selectivity.
- Advanced drug delivery systems show promise for addressing unmet medical needs.
Conclusions:
- The evolution of macromolecular architectures has significantly advanced drug delivery capabilities.
- Targeted drug delivery using complex macromolecules is crucial for minimizing side effects and improving therapeutic efficacy.
- Nanomedicine holds substantial potential for future therapeutic innovations through sophisticated drug delivery systems.
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