CuTA-por epsilon-pl nano platform, preparation method and application thereof

By preparing the CuTA-Por@ε-PL nanoplatform, the problems of ROS oxidative stress and biofilm penetration and diffusion difficulties in the treatment of peri-implantitis by antibacterial photodynamic therapy were solved, achieving efficient removal of biofilm and regulation of inflammation, thus improving the therapeutic effect of PI.

CN119732929BActive Publication Date: 2026-06-23THE AFFILIATED HOSPITAL OF QINGDAO UNIV
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Patent Information

Application Number
CN202411952996.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-12-27
Publication Date
2026-06-23
Estimated Expiration
2044-12-27

AI Technical Summary

Technical Problem

Current antibacterial photodynamic therapy for the treatment of peri-implantitis suffers from limitations in efficacy due to issues such as ROS-induced tissue oxidative stress, lack of biomembrane-specific targeting capability, and difficulty in biomembrane penetration and diffusion.

Method used

Using the CuTA-Por@ε-PL nanoplatform, protoporphyrin was grafted and ε-polylysine was encapsulated via amidation to form CuTA-Por@ε-PL nanoparticles. The positive charge on their surface enhanced the biomembrane penetration ability, and ROS was generated through aPDT to clear biomembranes and regulate inflammation.

Benefits of technology

It enhances the penetration and distribution of nanoparticles within biomembranes, clears ROS within PI tissues, inhibits inflammatory responses, promotes tissue regeneration, and provides a more effective PI treatment method.

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Abstract

The application belongs to the technical field of biomedicine, and particularly relates to a CuTA-Por@epsilon-PL nano platform and a preparation method and application thereof. The nano platform is prepared by grafting protoporphyrin (Por) through amidation reaction of CuTA, and wrapping the CuTA by epsilon-polylysine (epsilon-PL) through electrostatic adsorption, so as to synthesize CuTA-Por@epsilon-PL NPs (CPP NPs), which can be used as a potential treatment method for treating peri-implantitis, destroying bacterial biofilm and regulating inflammation.
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