The microproteome of cancer: From invisibility to relevance

Area of Science:

• Genomics
• Molecular Biology
• Cancer Research

Background:

• Genomic regions once deemed non-protein coding harbor small open reading frames (sORFs).
• These sORFs are transcribed and translated into conserved microproteins, often smaller than 300 base pairs.
• While many microproteins remain uncharacterized, they are known to be crucial for DNA repair, RNA processing, and metabolism regulation.

Purpose of the Study:

• To review the emerging field of microproteins.
• To explore the relevance of microproteins in cancer biology, referencing the hallmarks of cancer.
• To identify microproteins implicated in cancer or likely to play a role.

Main Methods:

• Literature review focusing on microproteins and cancer.
• Classification of microproteins based on their known or potential roles in cancer hallmarks.
• Synthesis of current knowledge on microprotein function and cancer implications.

Main Results:

• A growing number of microproteins are implicated in fundamental cellular processes.
• Several microproteins are already known to be involved in cancer development and progression.
• Many other microproteins are predicted to play roles in cancer due to their functions.

Conclusions:

• The field of microproteins is nascent but rapidly expanding.
• Microproteins represent a new class of molecular regulators with significant clinical potential.
• Further research into microproteins promises crucial insights into cancer biology and potential therapeutic strategies.