Nano-enabled Tumor Systematic Energy Exhaustion Via Zinc (II) Interference Mediated Glycolysis Inhibition and Specific GLUT1 Depletion

Overview

Journal Adv Sci (Weinh)

Specialty Biomedical Engineering

Date 2021 Dec 16

PMID 34913610

Citations 36

Authors

Sixuan Wu

Kaixiang Zhang

Yan Liang

Yongbin Wei

Jingyi An

Yifei Wang

Jiali Yang

Hongling Zhang

Zhenzhong Zhang

Junjie Liu

Jinjin Shi

Affiliations

Soon will be listed here.

Abstract

Despite the promise of tumor starvation therapies, they are often associated with nonspecific and incomplete energy blockade. Here, a novel paradigm of starvation therapy is proposed to synergize the "Zn interference"-mediated glycolysis inhibition and Zn -activating GLUT1 (Glucose transporter 1) tumor specific depletion for systematic energy exhaustion. It is discovered that ZIF-8 (zinc imidazolate metal-organic frameworks ) can induce abrupt intracellular Zn elevation preferentially in melanoma cells, and then achieve effective glycolysis blockade through "Zn interference"-triggered decrease of NAD and inactivation of GAPDH, making it a powerful tumor energy nanoinhibitor. Meanwhile, Zn -activating DNAzymes for specifically cleaving GLUT1 mRNA is designed. This DNAzyme can only be activated under intracellular Zn overloading, and then directionally cut off glucose supply, which further restrains the adaptive up-regulation of glycolytic flux after glycolysis inhibition in tumors. Afterward, DNAzymes are loaded in ZIF-8 concurrently tethered by hyaluronic acid (HA), constructing a "nanoenabled energy interrupter ". Such a rational design presents a preferential accumulation tendency to tumor sites due to the active CD44-targeting mechanisms, specifically achieves remarkable systematic energy exhaustion in melanoma cells, and affords 80.8% in tumor growth suppression without systemic toxicity in vivo. This work verifies a fascinating therapeutic platform enabling ion interference-inductive starvation strategy for effective tumor therapy.

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