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MST1 interactomes profiling across cell death in esophageal squamous cell carcinoma
Li Zhang1, Mingwei Gao2, Yueguang Wu1
1Cancer Institute, Shenzhen-Peking University-the Hong Kong University of Science and Technology Medical Center, Shenzhen, Guangdong, China.
Medical Review (2021)
|December 12, 2024
Summary
Mammalian Ste 20-like kinase 1 (MST1) interacts with different proteins during cell death in esophageal squamous cell carcinoma (ESCC). Understanding these interactions offers new therapeutic targets for drug-resistant ESCC.
Area of Science:
- Oncology
- Molecular Biology
- Cell Death Research
Background:
- Resistance to apoptosis is a major challenge in treating esophageal squamous cell carcinoma (ESCC).
- Investigating alternative cell death pathways is crucial for overcoming drug resistance in ESCC.
Purpose of the Study:
- To explore the role of Mammalian Ste 20-like kinase 1 (MST1) in various cell death pathways (apoptosis, autophagy, pyroptosis) in ESCC.
- To identify MST1-interacting proteins during normal proliferation and different cell death processes.
Main Methods:
- Utilized enhanced ascorbate peroxidase 2 (APEX2) proximity labeling.
- Employed immunoprecipitation-mass spectrometry (IP-MS) to identify MST1 interactomes.
- Performed proteomic profiling to analyze protein functions and localization.
Main Results:
- MST1 exhibits an expanded interactome during cell death compared to normal proliferation.
- Specific protein interactions with MST1 were identified during apoptosis (e.g., INCENP, ANLN), autophagy (e.g., CBX8, YTHDC1), and pyroptosis (e.g., LRRFIP2, FLII).
- Observed changes in interacting protein expression, such as decreased STK3 during apoptosis.
Conclusions:
- MST1 and its interactomes play significant roles in regulating diverse cell death pathways in ESCC.
- These findings provide potential mechanisms for MST1 in regulating cell death.
- Further research is needed to validate and consolidate these observations for therapeutic development.
