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Published on: June 30, 2023
Autophagy in gastrointestinal cancers: Therapeutic and biological perspectives
1Department of Radiation Oncology, Shandong Provincial Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, Shandong 250000, China.
Abstract:
Gastrointestinal (GI) neoplasms are among the most common and lethal tumors around the world. In spite of the introduction of multiple conventional therapeutics for GI tumors, the treatment of these cancers is challenging. Moreover, they are able to mediate resistance to therapeutics. Therefore, the novel therapeutics should be developed for the treatment of GI tumors based on the underlying mechanisms. Autophagy is a programmed cell death mechanism dysregulated in human cancers and it is a potential therapeutic target. In the current review, a special focus is placed on the role of autophagy in GI neoplasms. The current studies have highlighted the fact that genomic and epigenetic factors can participate in the regulation of autophagy in GI tumors. Autophagy can exert protective function to enhance survival of cancer cells, while it decreases apoptosis, ferroptosis and other cell death mechanisms. On the other hand, the pro-death autophagy impairs the progression of GI tumors. In order to regulate autophagy in GI tumor therapy, the studies have focused on the development of drugs (synthetic drugs and natural compounds) along with nanoparticles for the autophagy modulation in GI cancer therapy. The autophagy-related factors can be considered as prognostic and diagnostic factors in GI tumors.
Insights
Autophagy, a cell death process, is dysregulated in gastrointestinal (GI) cancers. Modulating autophagy offers a promising therapeutic strategy for GI neoplasms, potentially improving treatment outcomes.
Area of Science:
- Oncology
- Cell Biology
- Molecular Medicine
Background:
- Gastrointestinal (GI) neoplasms are leading causes of cancer mortality worldwide.
- Conventional therapies for GI tumors face challenges due to treatment resistance.
- Autophagy, a cellular degradation process, is frequently dysregulated in cancer, presenting a potential therapeutic target.
Purpose of the Study:
- To review the multifaceted role of autophagy in the development and progression of GI neoplasms.
- To explore the regulatory mechanisms of autophagy in GI tumors, including genomic and epigenetic factors.
- To discuss therapeutic strategies targeting autophagy for GI cancer treatment.
Main Methods:
- Literature review focusing on studies investigating autophagy in GI neoplasms.
- Analysis of research on the dual role of autophagy (pro-survival vs. pro-death) in GI cancer.
- Examination of therapeutic approaches involving autophagy modulation.
Main Results:
- Autophagy plays a complex role in GI tumors, promoting cancer cell survival or impairing tumor progression.
- Genomic and epigenetic alterations significantly influence autophagy regulation in GI cancers.
- Autophagy modulation, using drugs and nanoparticles, is a developing therapeutic avenue for GI tumors.
Conclusions:
- Autophagy is a critical factor in GI cancer biology with implications for therapeutic intervention.
- Targeting autophagy holds promise for novel treatment strategies against GI neoplasms.
- Autophagy-related factors may serve as valuable prognostic and diagnostic biomarkers for GI tumors.
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