Platelet protein synthesis, regulation, and post-translational modifications: mechanics and function

Area of Science:

• Hematology
• Molecular Biology
• Cell Biology

Background:

• Historically, mammalian platelets were considered incapable of protein biosynthesis.
• This dogma was challenged in the 1960s, with initial findings often dismissed.
• Recent decades have seen a surge in research confirming and exploring platelet protein synthesis.

Purpose of the Study:

• To review the historical and current understanding of platelet protein synthesis.
• To highlight the significance of platelet protein synthesis in various physiological and pathological conditions.
• To update the scientific community on recent findings since the last comprehensive review in 2009.

Main Methods:

• Literature review of historical and contemporary research on platelet protein synthesis.
• Analysis of studies investigating protein synthesis under normal, pathological, and activating conditions.
• Examination of identified components for protein synthesis, mRNA processing, translation regulation, and post-translational modifications within platelets.

Main Results:

• Platelets possess the complete machinery for protein synthesis, including mRNA processing and translation regulators.
• Platelet proteome is dynamic, responding to external signals to maintain hemostasis and other functions.
• Evidence supports the significance of platelet protein synthesis in diverse biological contexts.

Conclusions:

• The anucleate mammalian platelet is capable of significant protein biosynthesis.
• Platelet protein synthesis plays a crucial role in hemostasis and other physiological processes.
• Ongoing research continues to uncover the full scope and importance of platelet protein synthesis.