The Essentials on microRNA-Encoded Peptides from Plants to Animals

Area of Science:

• Molecular Biology
• Genetics
• Biochemistry

Background:

• Primary transcripts of microRNAs (pri-miRNAs) were traditionally considered long non-coding RNAs.
• Recent discoveries in plants revealed that pri-miRNAs contain small open reading frames (sORFs).
• These sORFs translate into microRNA-encoded peptides (miPEPs).

Purpose of the Study:

• To review recent advances in miPEP research.
• To discuss the implications of miPEPs for gene expression regulation by microRNAs.
• To explore the potential applications of miPEPs in sustainable agriculture and human disease treatment.

Main Methods:

• Literature review of recent studies on pri-miRNAs and miPEPs.
• Analysis of the prevalence and characteristics of miPEPs across different species.
• Discussion of experimental evidence supporting miPEP function and applications.

Main Results:

• miPEPs have been identified in pri-miRNAs of various plant and animal species.
• The number of known miPEPs is likely underestimated, suggesting they are a common feature of pri-miRNAs.
• The discovery of miPEPs broadens the understanding of gene regulation by microRNAs.

Conclusions:

• miPEPs represent a newly recognized class of functional peptides encoded within pri-miRNAs.
• miPEPs have significant implications for understanding gene expression regulation.
• miPEPs hold potential as tools for sustainable agriculture and therapeutic interventions.