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Triggering Pyroptosis in Cancer
Daniel E Johnson1,2, Zhibin Cui3
1Department of Otolaryngology-Head and Neck Surgery, University of California at San Francisco, San Francisco, CA 94143, USA.
Abstract:
Pyroptosis is an inflammatory programmed cell death recently identified as a crucial cellular process in various diseases, including cancers. Unlike other forms of cell death, canonical pyroptosis involves the specific cleavage of gasdermin by caspase-1, resulting in cell membrane damage and the release of the pro-inflammatory cytokines IL-1β and IL-18. Initially observed in innate immune cells responding to external pathogens or internal death signals, pyroptotic cell death has now been observed in numerous cell types. Recent studies have extensively explored different ways to trigger pyroptotic cell death in solid tumors, presenting a promising avenue for cancer treatment. This review outlines the mechanisms of both canonical and noncanonical pyroptosis pertinent to cancer and primarily focuses on various biomolecules that can induce pyroptosis in malignancies. This strategy aims not only to eliminate cancer cells but also to promote an improved tumor immune microenvironment. Furthermore, emerging research indicates that targeting pyroptotic pathways may improve the effectiveness of existing cancer treatments, making them more potent against resistant tumor types, offering new hope for overcoming treatment resistance in aggressive malignancies.
Insights
Pyroptosis, an inflammatory cell death, is a promising cancer therapy. Triggering pyroptosis eliminates cancer cells and enhances anti-tumor immunity, potentially overcoming treatment resistance.
Area of Science:
- Oncology
- Immunology
- Cell Biology
Background:
- Pyroptosis is an inflammatory programmed cell death pathway involving gasdermin cleavage by caspase-1.
- It causes cell membrane damage and releases pro-inflammatory cytokines like IL-1β and IL-18.
- Initially observed in immune cells, pyroptosis is now recognized in various cell types, including cancer cells.
Purpose of the Study:
- To review mechanisms of canonical and noncanonical pyroptosis in cancer.
- To highlight biomolecules that induce pyroptosis in malignancies.
- To explore pyroptosis as a cancer treatment strategy and its role in improving the tumor immune microenvironment.
Main Methods:
- Literature review of pyroptosis mechanisms in cancer.
- Analysis of studies on biomolecules inducing pyroptosis.
- Examination of pyroptosis's impact on cancer cell death and immune response.
Main Results:
- Pyroptosis offers a novel approach to cancer therapy by directly eliminating cancer cells.
- Inducing pyroptosis can remodel the tumor microenvironment, enhancing anti-tumor immunity.
- Targeting pyroptotic pathways may sensitize tumors to existing treatments, overcoming resistance.
Conclusions:
- Pyroptosis is a potent strategy for cancer treatment, inducing both direct cell death and immune stimulation.
- Biomolecules targeting pyroptosis hold promise for developing new anti-cancer therapies.
- Further research into pyroptosis pathways could lead to improved treatments for resistant cancers.
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