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Emerging Prospects of Nanozymes for Antibacterial and Anticancer Applications

期刊

BIOMEDICINES
卷 10, 期 6, 页码 -

出版社

MDPI
DOI: 10.3390/biomedicines10061378

关键词

enzyme mimics; nanozyme; reactive oxygen species; antibacterial therapy; anticancer therapy

资金

  1. Council of Science and Industrial Research (CSIR), India
  2. McKenzie Fellowship
  3. University of Melbourne, Australia
  4. Institute of Eminence (IoE), University of Delhi, India

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The ability of nanoparticles to mimic enzyme activity opens up new possibilities in biomedical applications. These artificial nanozymes are safer, less expensive, and more stable than natural enzymes. Their catalytic activity can be controlled by adjusting their properties, and they can also have additional features.
The ability of some nanoparticles to mimic the activity of certain enzymes paves the way for several attractive biomedical applications which bolster the already impressive arsenal of nanomaterials to combat deadly diseases. A key feature of such 'nanozymes' is the duplication of activities of enzymes or classes of enzymes, such as catalase, superoxide dismutase, oxidase, and peroxidase which are known to modulate the oxidative balance of treated cells for facilitating a particular biological process such as cellular apoptosis. Several nanoparticles that include those of metals, metal oxides/sulfides, metal-organic frameworks, carbon-based materials, etc., have shown the ability to behave as one or more of such enzymes. As compared to natural enzymes, these artificial nanozymes are safer, less expensive, and more stable. Moreover, their catalytic activity can be tuned by changing their size, shape, surface properties, etc. In addition, they can also be engineered to demonstrate additional features, such as photoactivated hyperthermia, or be loaded with active agents for multimodal action. Several researchers have explored the nanozyme-mediated oxidative modulation for therapeutic purposes, often in combination with other diagnostic and/or therapeutic modalities, using a single probe. It has been observed that such synergistic action can effectively by-pass the various defense mechanisms adapted by rogue cells such as hypoxia, evasion of immunorecognition, drug-rejection, etc. The emerging prospects of using several such nanoparticle platforms for the treatment of bacterial infections/diseases and cancer, along with various related challenges and opportunities, are discussed in this review.

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