The Musashi family RNA-binding proteins in stem cells.

Area of Science:

• Molecular Biology
• Developmental Biology
• Stem Cell Biology
• Neuroscience
• Oncology

Background:

• The Musashi family comprises evolutionarily conserved RNA-binding proteins.
• Msi1 and Msi2 are identified mammalian members; Msi1 is crucial for neural stem/progenitor cell stemness and central nervous system development.
• Msi1 regulates target mRNAs involved in signal transduction and cell cycle control.

Purpose of the Study:

• To review the functions and action mechanisms of the Msi1 protein.
• To discuss potential future research directions for Msi1.

Main Methods:

• Literature review of recent findings on Msi1.
• Analysis of reported target mRNAs and regulatory pathways.
• Synthesis of information on Msi1 expression in various cell types and disease contexts.

Main Results:

• Msi1 expression is significant in adult somatic stem/progenitor cells (eye, gut, stomach, breast, hair follicle).
• Msi1 is also expressed in various cancer cells.
• Aberrant Msi1 expression is observed in neural tissues of patients with neurological disorders like epilepsy.

Conclusions:

• Msi1 plays a critical role in maintaining stemness and regulating development via translational control.
• Its involvement in diverse stem cell populations and cancer warrants further investigation.
• Understanding Msi1's complex regulatory networks is key for future therapeutic strategies.