The multifunctional, stress-sensitive ribonuclease angiogenin cross-regulates different gene expression processes

Area of Science:

• Molecular Biology
• Gene Regulation
• Biochemistry

Background:

• Ribonucleases are crucial for RNA processing and degradation, influencing gene expression.
• Angiogenin (ANG) is a ribonuclease linked to various pathophysiologies.
• ANG plays context-dependent roles in cellular processes by interacting with diverse RNA substrates.

Purpose of the Study:

• To provide updated insights into the mechanisms of gene expression regulation by Angiogenin (ANG).
• To highlight the role of ANG in ribosomal DNA transcription and translation.
• To explore the function of ANG-generated tRNA fragments in gene expression control.

Main Methods:

• Literature review focusing on Angiogenin (ANG) and its functions.
• Analysis of studies detailing ANG's interaction with RNA substrates.
• Examination of research on tRNA cleavage and its regulatory impact.

Main Results:

• ANG acts as a key regulator of ribosomal DNA transcription and translation.
• Cellular stress induces ANG to cleave tRNAs into regulatory fragments.
• These tRNA fragments influence mRNA stability and translation.

Conclusions:

• Angiogenin (ANG) is a multifunctional ribonuclease with significant roles in gene expression.
• ANG-mediated tRNA cleavage represents a novel mechanism for gene expression regulation.
• Multifunctional ribonucleases may mediate crosstalk between different gene expression facets.