Ultrathin Niobium Carbide MXenzyme for Remedying Hypertension by Antioxidative and Neuroprotective Actions

Angew Chem Int Ed Engl. 2023 Jun 26;62(26):e202303539. doi: 10.1002/anie.202303539. Epub 2023 May 15.

Abstract

Hypertension, as a leading risk factor for cardiovascular diseases, is associated with oxidative stress and impairment of endogenous antioxidant mechanisms, but there is still a tremendous knowledge gap between hypertension treatment and nanomedicines. Herein, we report a specific nanozyme based on ultrathin two-dimensional (2D) niobium carbide (Nb2 C) MXene, termed Nb2 C MXenzyme, to fight against hypertension by achieving highly efficient reactive oxygen species elimination and inflammatory factors inhibition. The biocompatible Nb2 C MXenzyme displays multiple enzyme-mimicking activities, involving superoxide dismutase, catalase, glutathione peroxidase, and peroxidase, inducing cytoprotective effects by resisting oxidative stress, thereby alleviating inflammatory response and reducing blood pressure, which is systematically demonstrated in a stress-induced hypertension rat model. This strategy not only opens new opportunities for nanozymes to treat hypertension but also expands the potential biomedical applications of 2D MXene nanosystems.

Keywords: MXene; Nanozyme; Neurogenic Hypertension Therapy; Reactive Oxygen Species Scavenging.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Antioxidants* / pharmacology
  • Antioxidants* / therapeutic use
  • Catalase / metabolism
  • Hypertension* / drug therapy
  • Oxidative Stress
  • Rats
  • Reactive Oxygen Species
  • Superoxide Dismutase / metabolism

Substances

  • Antioxidants
  • niobium carbide
  • MXene
  • Catalase
  • Superoxide Dismutase
  • Reactive Oxygen Species