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Nanoparticles as Tools to Target Redox Homeostasis in Cancer Cells
Francesco Ciccarese1, Vittoria Raimondi1, Evgeniya Sharova1
1Immunology and Molecular Oncology Unit, Veneto Institute of Oncology IOV-IRCCS, 35128 Padova, Italy.
Abstract:
Reactive oxygen species (ROS) constitute a homeostatic rheostat that modulates signal transduction pathways controlling cell turnover. Most oncogenic pathways activated in cancer cells drive a sustained increase in ROS production, and cancer cells are strongly addicted to the increased activity of scavenging pathways to maintain ROS below levels that produce macromolecular damage and engage cell death pathways. Consistent with this notion, tumor cells are more vulnerable than their normal counterparts to pharmacological treatments that increase ROS production and inhibit ROS scavenging. In the present review, we discuss the recent advances in the development of integrated anticancer therapies based on nanoparticles engineered to kill cancer cells by raising their ROS setpoint. We also examine nanoparticles engineered to exploit the metabolic and redox alterations of cancer cells to promote site-specific drug delivery to cancer cells, thus maximizing anticancer efficacy while minimizing undesired side effects on normal tissues.
Insights
Cancer cells rely on managing reactive oxygen species (ROS) but are vulnerable to therapies that disrupt this balance. Nanoparticles offer a novel approach to target cancer cells by increasing ROS levels and delivering drugs effectively.
Area of Science:
- Biomedical Engineering
- Cancer Biology
- Nanotechnology
Background:
- Reactive oxygen species (ROS) act as crucial signaling molecules regulating cell turnover.
- Cancer cells exhibit elevated ROS production and dependency on scavenging pathways to prevent damage.
- Tumor cells are uniquely susceptible to ROS-increasing and ROS-scavenging inhibiting treatments.
Purpose of the Study:
- To review recent advancements in nanoparticle-based therapies for cancer.
- To explore how engineered nanoparticles can elevate ROS levels in cancer cells.
- To examine nanoparticle strategies for targeted drug delivery exploiting cancer cell metabolism.
Main Methods:
- Review of current literature on nanoparticle-based anticancer strategies.
- Analysis of mechanisms by which nanoparticles modulate ROS levels.
- Discussion of nanoparticle-mediated drug delivery targeting cancer-specific metabolic alterations.
Main Results:
- Nanoparticles can be engineered to increase the ROS setpoint in cancer cells, inducing cell death.
- Targeted drug delivery systems utilizing nanoparticles enhance anticancer efficacy.
- Nanoparticles can exploit cancer cell redox imbalances for selective toxicity.
Conclusions:
- Engineered nanoparticles represent a promising strategy for integrated cancer therapy.
- Modulating ROS levels via nanoparticles offers a targeted approach to cancer treatment.
- Nanoparticle-based drug delivery minimizes side effects by targeting cancer cells specifically.
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