Recent Advances in Nanoplatform Construction Strategy for Alleviating Tumor Hypoxia.

Hypoxia is a typical feature of most solid tumors and has important effects on tumor cells' proliferation, invasion, and metastasis. This is the key factor that leads to poor efficacy of different kinds of therapy including chemotherapy, radiotherapy, photodynamic therapy, etc. In recent years, the construction of hypoxia-relieving functional nanoplatforms through nanotechnology has become a new strategy to reverse the current situation of tumor microenvironment hypoxia and improve the effectiveness of tumor treatment. Here, we focus on the main strategies and recent progress in constructing nanoplatforms to directly carry oxygen, generate oxygen in situ, inhibit mitochondrial respiration, and enhance blood perfusion to alleviate tumor hypoxia. We compared the advantages and disadvantages of these nanoplatforms. Meanwhile, nanoplatforms based on organic and inorganic substances were also summarized and classified. Through the comprehensive overview, we hope that the summary of these nanoplatforms for alleviating hypoxia could provide new enlightenment and prospects for the construction of nanomaterials in this field. This article is protected by copyright. All rights reserved.