Nanotechnological strategies to increase the oxygen content of the tumor

Front Pharmacol. 2023 Mar 9:14:1140362. doi: 10.3389/fphar.2023.1140362. eCollection 2023.

Abstract

Hypoxia is a negative prognostic indicator of solid tumors, which not only changes the survival state of tumors and increases their invasiveness but also remarkably reduces the sensitivity of tumors to treatments such as radiotherapy, chemotherapy and photodynamic therapy. Thus, developing therapeutic strategies to alleviate tumor hypoxia has recently been considered an extremely valuable target in oncology. In this review, nanotechnological strategies to elevate oxygen levels in tumor therapy in recent years are summarized, including (I) improving the hypoxic tumor microenvironment, (II) oxygen delivery to hypoxic tumors, and (III) oxygen generation in hypoxic tumors. Finally, the challenges and prospects of these nanotechnological strategies for alleviating tumor hypoxia are presented.

Keywords: cancer treatment; hypoxia; nanomaterial; nanozyme; tumor microenvironment.

Publication types

  • Review

Grants and funding

This work was supported by the Department of Education of Anhui Province (KJ2021A0732), the National College Students’ innovation and entrepreneurship training program (202210367075), the Science and Technology Innovation Guidance Project of Bengbu City (20220127), the NNSF of China (52103166) and the NSF of Jiangsu Province (BK20200710).