PIM1 promotes hepatic conversion by suppressing reprogramming-induced ferroptosis and cell cycle arrest

Area of Science:

• Molecular Biology
• Systems Biology
• Biochemistry

Background:

• Protein kinase activity is vital for cellular functions.
• Identifying key regulatory kinases remains a significant challenge in biological research.

Purpose of the Study:

• To develop and validate a novel trans-omics method for predicting key regulatory kinases.
• To apply this method to identify kinases involved in hepatocyte maturation and hepatic reprogramming.

Main Methods:

• Developed a trans-omics approach called central kinase inference.
• Integrated quantitative transcriptomic and phosphoproteomic data for kinase prediction.
• Validated the method against known kinases in anti-cancer drug resistance.

Main Results:

• The central kinase inference method showed higher accuracy than Kinase-Substrate Enrichment Analysis.
• Identified 5 key kinases regulating hepatocyte maturation and hepatic reprogramming.
• Discovered that PIM1 kinase promotes hepatic conversion and protects fibroblasts from ferroptosis and cell cycle arrest.

Conclusions:

• The central kinase inference method is effective for identifying key kinases in biological processes.
• PIM1 plays a significant role in hepatic reprogramming and cellular protection.
• The developed method has potential applications in predicting kinases across various biological systems.