tRNA-Derived Small RNAs: Biogenesis, Modification, Function and Potential Impact on Human Disease Development

Area of Science:

• Molecular Biology
• Genetics
• Biochemistry

Background:

• Transfer RNAs (tRNAs) are essential small non-coding RNAs for protein synthesis.
• tRNAs are also precursors to tRNA-derived small RNAs (tsRNAs), found abundantly in sequencing data.
• RNA modifications are crucial for tRNA function, and their defects are linked to human diseases.

Purpose of the Study:

• To review the biogenesis of tsRNAs, including the role of RNA modifications.
• To discuss the experimental evidence for the proposed functions of tsRNAs.
• To highlight the need for improved methodologies for tsRNA quantification and manipulation.

Main Methods:

• Literature review of existing studies on tsRNA biogenesis and function.
• Analysis of high-throughput sequencing data for tsRNA occurrence and abundance.
• Discussion of the impact of tRNA modifications on tRNA stability and tsRNA generation.

Main Results:

• tsRNAs are a diverse group of small RNAs originating from tRNAs.
• RNA modifications influence tRNA stability and potentially tsRNA production and function.
• Current evidence suggests a broad functional spectrum for tsRNAs, but definitive roles are often correlative.

Conclusions:

• Elucidating whether tRNA deficiency or tsRNA activity causes human diseases requires further investigation.
• Advanced methods for precise tsRNA quantification and manipulation are crucial.
• Harnessing tsRNAs for diagnostics or therapeutics necessitates robust methodologies.