Protein palmitoylation and cancer

Area of Science:

• Biochemistry
• Molecular Biology
• Cellular Biology

Background:

• Protein S-palmitoylation is a reversible post-translational modification affecting protein localization, stability, and function.
• This modification is crucial for both oncogenes (e.g., NRAS, EGFR) and tumor suppressors (e.g., SCRIB).

Purpose of the Study:

• To investigate the role of S-palmitoylation enzymes in cancer.
• To explore targeting palmitoylation dynamics as a potential cancer therapeutic strategy.

Main Methods:

• Studied the activity of Asp-His-His-Cys (DHHC)-family palmitoyl S-acyltransferases and acyl-protein thioesterases (APTs) in mammalian cells.
• Examined the impact of these enzymes on oncogenes and tumor suppressors.

Main Results:

• DHHC enzymes catalyze palmitate addition, while APTs catalyze its removal.
• Altered expression patterns of these enzymes are observed in cancer.
• These enzymes modulate critical oncogenes and tumor suppressors.

Conclusions:

• S-palmitoylation plays a significant role in cancer-related protein function.
• Targeting S-palmitoylation or its regulating enzymes presents a promising therapeutic avenue for cancer treatment.