Anti-MicroRNA-21 Oligonucleotide Loaded Spermine-Modified Acetalated Dextran Nanoparticles for B1 Receptor-Targeted Gene Therapy and Antiangiogenesis Therapy.

Abstract

The use of nanoparticles (NPs) to deliver small inhibiting microRNAs (miRNAs) has shown great promise for treating cancer. However, constructing a miRNA delivery system that targets brain cancers, such as glioblastoma multiforme (GBM), remains technically challenging due to the existence of the blood-tumor barrier (BTB). In this work, a novel targeted antisense miRNA-21 oligonucleotide (ATMO-21) delivery system is developed for GBM treatment. Bradykinin ligand agonist-decorated spermine-modified acetalated dextran NPs (SpAcDex NPs) could temporarily open the BTB by activating G-protein-coupled receptors that are expressed in tumor blood vessels and tumor cells, which increase transportation to and accumulation in tumor sites. ATMO-21 achieves high loading in the SpAcDex NPs (over 90%) and undergoes gradual controlled release with the degradation of the NPs in acidic lysosomal compartments. This allows for cell apoptosis and inhibition of the expression of vascular endothelial growth factor by downregulating hypoxia-inducible factor (HIF-1α) protein. An in vivo orthotopic U87MG glioma model confirms that the released ATMO-21 shows significant therapeutic efficacy in inhibiting tumor growth and angiogenesis, demonstrating that agonist-modified SpAcDex NPs represent a promising strategy for GBM treatment combining targeted gene therapy and antiangiogenic therapy.

• Authors: Tao Zheng, Wentao Wang, Mohsen Mohammadniaei, Jon Ashley, Ming Zhang, Ninglin Zhou, Jian Shen, Yi Sun
• Journal: Advanced science (Weinheim, Baden-Wurttemberg, Germany) (Adv Sci (Weinh)) Vol. 9 Issue 5 Pg. e2103812 (02 2022) ISSN: 2198-3844 [Electronic] Germany
• PMID: 34936240 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: © 2021 The Authors. Advanced Science published by Wiley-VCH GmbH.

Chemical References

• Angiogenesis Inhibitors
• Antagomirs
• Bradykinin B1 Receptor Antagonists
• Dextrans
• MIRN21 microRNA, human
• MicroRNAs
• Vascular Endothelial Growth Factor A
• Spermine

Topics

• Angiogenesis Inhibitors (administration & dosage)
• Antagomirs (administration & dosage)
• Bradykinin B1 Receptor Antagonists (administration & dosage)
• Cell Line, Tumor
• Dextrans
• Genetic Therapy (methods)
• Glioma (therapy)
• Humans
• MicroRNAs (antagonists & inhibitors)
• Nanoparticles (administration & dosage)
• Spermine
• Vascular Endothelial Growth Factor A (metabolism)