[Biogenesis of small non-coding RNAs in animals]

Area of Science:

• Molecular Biology
• Genetics
• RNA Biology

Background:

• Small non-coding RNAs are crucial gene expression regulators.
• MicroRNAs, piRNAs, and siRNAs are key types with essential biological functions.
• Aberrant levels of these RNAs are implicated in various pathologies.

Purpose of the Study:

• To review the biogenesis pathways of microRNAs, piRNAs, and siRNAs in animals.
• To highlight the regulatory roles of small non-coding RNAs in gene expression.
• To underscore the association between small non-coding RNA dysregulation and diseases.

Main Methods:

• Literature review of small non-coding RNA biogenesis.
• Focus on animal models and molecular mechanisms.
• Comparative analysis of miRNA, piRNA, and siRNA pathways.

Main Results:

• Detailed descriptions of the distinct biogenesis pathways for miRNAs, piRNAs, and siRNAs.
• Elucidation of the processing and maturation steps for each RNA type.
• Emphasis on the conserved and divergent aspects of their biogenesis across species.

Conclusions:

• Understanding small non-coding RNA biogenesis is vital for comprehending gene regulation.
• These pathways offer potential targets for therapeutic interventions in related diseases.
• Further research is needed to fully elucidate the complexities of small non-coding RNA biology.