Tumor Microenvironment-Responsive Nanomaterials as Targeted Delivery Carriers for Photodynamic Anticancer Therapy

Houhe LIU, Jiwen YAO, Xiaowen CAI, Yuan JIANG, Mei LIN, Xue JIANG, Wingnang LEUNG*, Chuanshan XU*

*Corresponding author for this work

Research output: Journal PublicationsReview articleOther Review

Abstract

Photodynamic therapy (PDT), as an alternative approach to treat tumors through reactive oxygen species (ROS) produced by the activated photosensitizers (PS) upon light irradiation, has attracted wide attention in recent years due to its mini-invasive and high efficient features. However, the low hydrophilicity and poor targeting of PS limit the clinical application of PDT. Stimuli-responsive nanomaterials represent a major class of remarkable functional nanocarriers for drug delivery. In particular, tumor microenvironment-responsive nanomaterials (TMRNs) can respond to the special pathological microenvironment in tumor tissues to release the loaded drugs, that endows them to control the release of PS within tumor tissues. Recent studies have demonstrated that TMRNs can achieve the targeted release of PS at tumor site, increase the concentration of PS in tumor tissues and reduce side effects of PDT. Hence, in the present paper, we review TMRNs, mainly including pH-, redox-, enzymes- and hypoxia-responsive smart nanomaterials, and focus on the application of these smart nanomaterials as targeted delivery carriers of PS in photodynamic anticancer therapy, to further boost the development of PDT in tumor therapy.
Original languageEnglish
Article number758
JournalFrontiers in Chemistry
Volume8
Issue number758
DOIs
Publication statusPublished - 29 Sep 2020

Bibliographical note

This work was supported by Funds of Talents for High-level University in the Construction of Guangzhou Medical University (no. B195002009025).

Keywords

  • drug delivery
  • photodynamic therapy
  • photosensitizer
  • stimuli-responsive nanomaterials
  • tumor microenvironment

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