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Inhibiting Cytoprotective Autophagy in Cancer Therapy: An Update on Pharmacological Small-Molecule Compounds
Lijuan Zhang1,2, Yuxuan Zhu1,2, Jiahui Zhang3,4
1Department of Pharmacy, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China.
Abstract:
Autophagy is a self-degradation process in which damaged proteins and organelles are engulfed into autophagosomes for digestion and eventually recycled for cellular metabolism to maintain intracellular homeostasis. Accumulating studies have reported that autophagy has the Janus role in cancer as a tumor suppressor or an oncogenic role to promote the growth of established tumors and developing drug resistance. Importantly, cytoprotective autophagy plays a prominent role in many types of human cancers, thus inhibiting autophagy, and has been regarded as a promising therapeutic strategy for cancer therapy. Here, we focus on summarizing small-molecule compounds inhibiting the autophagy process, as well as further discuss other dual-target small-molecule compounds, combination strategies, and other strategies to improve potential cancer therapy. Therefore, these findings will shed new light on exploiting more small-molecule compounds inhibiting cytoprotective autophagy as candidate drugs for fighting human cancers in the future.
Insights
Autophagy, a cellular recycling process, plays a dual role in cancer. Inhibiting cytoprotective autophagy with small molecules offers a promising therapeutic strategy for human cancers.
Area of Science:
- Cell Biology
- Molecular Oncology
- Drug Discovery
Background:
- Autophagy is a fundamental cellular process involving the degradation and recycling of damaged components to maintain homeostasis.
- Autophagy exhibits a complex, dual role in cancer, acting as both a tumor suppressor and a promoter of tumor growth and drug resistance.
- Cytoprotective autophagy is crucial in many human cancers, making its inhibition a potential therapeutic avenue.
Purpose of the Study:
- To review small-molecule compounds that inhibit autophagy.
- To explore dual-target compounds, combination strategies, and other approaches for enhancing cancer therapy by targeting autophagy.
- To provide insights for developing novel small-molecule inhibitors of cytoprotective autophagy for cancer treatment.
Main Methods:
- Literature review of small-molecule compounds targeting autophagy.
- Analysis of studies on dual-target compounds and combination therapies involving autophagy inhibition.
- Synthesis of information on various strategies to improve cancer therapy through autophagy modulation.
Main Results:
- Identification of various small-molecule compounds with autophagy inhibitory properties.
- Discussion of the potential of dual-target agents and combination strategies in cancer treatment.
- Highlighting the significance of targeting cytoprotective autophagy.
Conclusions:
- Inhibiting cytoprotective autophagy is a viable strategy for cancer therapy.
- Small-molecule compounds targeting autophagy hold promise as anti-cancer drug candidates.
- Further research into novel inhibitors and combination strategies can advance cancer treatment.
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