4.7 Article

Polycyclodextrin as a linker for nanomedicine fabrication and synergistic anticancer application

Journal

CARBOHYDRATE POLYMERS
Volume 273, Issue -, Pages -

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2021.118608

Keywords

Polycyclodextrin; Linker; Synergistic tumor therapy; Photodynamic therapy; Photothermal therapy

Funding

  1. Priority Academic Program Development of Jiangsu Higher Education Institutions
  2. Foundation of Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials [161090H001]

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The study utilized PCD as a linker to combine transition metal nanomaterials with functional molecules for synergistic photothermal and photodynamic tumor therapy.
Polycyclodextrin (denoted PCD) composed of cyclodextrin monomer units and 1,3-diethoxypropan-2-ol con-taining many hydroxyl groups with lone pairs of electrons, easily coordinated with transition metals with empty orbitals. The CD unit can also provide host-guest binding sites for functional molecules. This article utilizes this feature of PCD for the first time as a linker to combine transition metal nanomaterials with synergistic func-tional molecules. We synthesized PCD with 50% CD monomer by epichlorohydrin cross-linking method. Utilizing the coordination effect of the hydroxyl group in PCD and the iron ion in photothermal nanoparticles (PB-Yb), the PCD is coated on its surface; simultaneously, CD in PCD can form a host-guest complex with adamantane-modified zinc phthalocyanine (Pc) photosensitizer. Using PCD as a linker, PB-Yb and Pc (denoted PYPP) were combined to improve the solubility of PB-Yb, reduce the aggregation degree of Pc to increase their activity, and achieve photothermal and photodynamic synergistic tumor therapy.

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