Lysine acetylation and cancer: A proteomics perspective

Area of Science:

• Biochemistry
• Molecular Biology
• Cancer Research

Background:

• Lysine acetylation is a reversible protein modification regulated by lysine acetyltransferases (KATs) and lysine deacetylases (KDACs).
• Bromodomains recognize acetylated lysine residues, playing a role in cellular processes.
• Over 2000 human proteins are now known to be acetylated, highlighting the broad impact of this modification.

Purpose of the Study:

• To review strategies for characterizing protein lysine acetylation in cancer research.
• To emphasize the importance of understanding acetylation's role in cancer development.
• To highlight the unexplored potential of lysine acetylation stoichiometry in cancer.

Main Methods:

• High-resolution mass spectrometry-based proteomics.
• Enrichment of acetylated peptides via immunoprecipitation using anti-acetyl-lysine antibodies.
• Review of existing literature on acetylation characterization strategies.

Main Results:

• The number of identified acetylated proteins has significantly increased.
• Lysine acetylation is implicated in nearly all cellular processes and linked to cancer.
• Several KATs, KDACs, and bromodomain proteins are associated with cancer development.

Conclusions:

• Protein lysine acetylation is a critical modification with significant implications for cancer.
• Targeting KATs, KDACs, and bromodomain proteins with small molecules shows therapeutic promise.
• Further research into the stoichiometry of lysine acetylation in cancer is warranted.