Breakthrough in Nanotechnology: Researchers Develop Novel Strategy for Creating Drug-Eluting Bioadhesives

Strategic Insights -

Researchers from the University of California Los Angeles (UCLA) have made a significant breakthrough in the field of nanotechnology by developing a novel strategy for creating drug-eluting bioadhesives. The team, led by Nasim Annabi, has leveraged the multifunctional binding capacity of tannic acid (TA) to bridge drug-loaded nanoparticles and hydrogel, creating a versatile nanocomposite design for sustained, localized drug delivery. The research has resulted in the development of a ready-to-use ocular patch named "OcuTAPE," which addresses the unmet need for bioadhesives that seal injuries and provide sustained drug release.

Key Takeaways:

  • The new strategy uses tannic acid (TA) to bridge drug-loaded nanoparticles and hydrogel, creating a versatile nanocomposite design for sustained, localized drug delivery.
  • The approach enables the synthesis-free incorporation of nanoparticles into hydrogels, facilitating the creation of nanocomposite bioadhesives with improved retention, mechanical mismatch, and controlled drug release.
  • The researchers developed a ready-to-use ocular patch named "OcuTAPE" that achieves high toughness, rapid wet tissue adhesion without external aids, and TA-mediated integration of poly (ethylene glycol) (PEG)-based micelles for dexamethasone (Dex) release over five weeks.
  • The OcuTAPE patch conforms to ocular biomechanics, retains in vivo on rabbit and pig eyes, and demonstrates biocompatibility and intrinsic anti-inflammatory efficacy.
  • The research has been peer-reviewed and has been published in Advanced Functional Materials.
  • The study was funded by the National Institutes of Health (NIH) - USA, United States Department of Defense, Vision Research Program (VRP), and University of Missouri School of Medicine.
  • The research team includes scholars from UCLA, including Nasim Annabi, Yuting Zheng, Steven Vo, Monu Monu, Lal Krishan Kumar, Prince Kumar, Pawan Kumar Singh, Suneel Gupta, and Nariman Nassiri.

Statistics:

  • The OcuTAPE patch has a high toughness of approximately 4000 kJ m-3.
  • The patch demonstrates biocompatibility and intrinsic anti-inflammatory efficacy.
  • The research was funded by a total of 4 organizations: National Institutes of Health (NIH) - USA, United States Department of Defense, Vision Research Program (VRP), and University of Missouri School of Medicine.
  • The study was published in the journal Advanced Functional Materials.

Sources:

  • VerticalNews: "Researchers detail new data in Nanotechnology - Nanoparticles." (October 20, 2025)
  • Advanced Functional Materials: "Engineering Drug-eluting Ocular Bioadhesive 'ocutape' Via Tannic Acid-mediated Nanoparticle Bridging." (2025)
  • NewsRx: "Investigators at University of California Los Angeles (UCLA) Detail Findings in Nanoparticles (Engineering Drug-eluting Ocular Bioadhesive 'ocutape' Via Tannic Acid-mediated Nanoparticle Bridging)." (Journal of Engineering, October 20, 2025, p 1442)