TFEB Signalling-Related MicroRNAs and Autophagy

Area of Science:

• Molecular Biology
• Cell Biology
• Genetics

Background:

• Transcription Factor EB (TFEB) is a master regulator of lysosomal biogenesis, autophagy, and cellular stress responses.
• MicroRNAs (miRNAs) are small non-coding RNAs involved in post-transcriptional gene regulation across various cellular processes.
• TFEB's activity is tightly controlled through multiple regulatory mechanisms, including post-transcriptional modifications influenced by miRNAs.

Purpose of the Study:

• To review the intricate relationship between miRNAs and TFEB.
• To elucidate how this crosstalk influences TFEB activation and downstream cellular functions.
• To highlight the reciprocal regulation where TFEB also controls miRNA transcription.

Main Methods:

• Literature review of existing studies on TFEB, miRNAs, and their interactions.
• Analysis of molecular mechanisms governing TFEB regulation by miRNAs.
• Examination of the impact of miRNA-TFEB crosstalk on cellular processes like autophagy and lysosomal function.

Main Results:

• miRNAs directly or indirectly regulate TFEB activity by targeting its transcript or related molecules.
• TFEB-driven transcriptional programs can be modulated by miRNA-mediated regulation of TFEB targets.
• TFEB itself transcriptionally regulates the expression of numerous miRNAs, indicating a feedback loop.

Conclusions:

• The interplay between miRNAs and TFEB is crucial for cellular homeostasis and stress adaptation.
• Understanding this crosstalk provides insights into the pathogenesis of diseases involving TFEB and miRNA dysregulation.
• Further research into this regulatory network may reveal novel therapeutic targets.