Review Article

Nanomedicines based on nanoscale metal-organic frameworks for cancer immunotherapy

Authors: Xiao-fang Zhong1, Xun Sun1
1 Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610064, China
Correspondence to: Xun Sun: sunxun@scu.edu.cn,
DOI: 10.1038/s41401-020-0414-6
Received: 10 December 2019
Accepted: 30 March 2020
Advance online: 30 April 2020

Abstract

Cancer immunotherapy, with an aim to enhance host immune responses, has been recognized as a promising therapeutic treatment for cancer. A diversity of immunomodulatory agents, including tumor-associated antigens, adjuvants, cytokines and immunomodulators, has been explored for their ability to induce a cascading adaptive immune response. Nanoscale metal-organic frameworks (nMOFs), a class of crystalline-shaped nanomaterials formed by the self-assembly of organic ligands and metal nodes, are attractive for cancer immunotherapy because they feature tunable pore size, high surface area and loading capacity, and intrinsic biodegradability. In this review we summarize recent progress in the development of nMOFs for cancer immunotherapy, including cancer vaccine delivery and combination of in situ vaccination with immunomodulators to reverse immune suppression. Current challenges and future perspectives for rational design of nMOF-based cancer immunotherapy are also discussed.
Keywords: cancer immunotherapy; nanoscale metal-organic frameworks (nMOFs); cancer vaccine; in situ vaccination; immunomodulators; immune response

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