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Updated: Jan 28, 2026

Optical Tweezers to Study RNA-Protein Interactions in Translation Regulation
Published on: February 12, 2022
Vive ut Numquam Moriturus: Tweaking Translational Control to Regulate Longevity
Raz Bar-Ziv1, Ngoc-Tram Nguyen1, Andrew Dillin1
1Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA; Howard Hughes Medical Institute, Chevy Chase, MD 20815, USA.
Abstract:
Molecular mechanisms regulating aging at the post-transcriptional level are not clear. In this issue of Molecular Cell,D'Amico et al. (2019) demonstrate that the translational inhibition of mitochondrial fission factor (MFF) regulates cellular homeostasis and aging.
Insights
Researchers found that controlling the translation of mitochondrial fission factor (MFF) impacts cellular balance and aging. This discovery sheds light on post-transcriptional regulation in the aging process.
Area of Science:
- Cellular biology
- Molecular biology
- Aging research
Background:
- The molecular mechanisms governing aging, particularly at the post-transcriptional level, remain incompletely understood.
- Cellular homeostasis is crucial for maintaining organismal health and is intricately linked to the aging process.
Purpose of the Study:
- To investigate the role of post-transcriptional regulation in cellular homeostasis and aging.
- To identify specific molecular players involved in these processes.
Main Methods:
- The study focused on translational control mechanisms.
- Investigated the impact of regulating mitochondrial fission factor (MFF) expression.
Main Results:
- Demonstrated that translational inhibition of mitochondrial fission factor (MFF) plays a key role in maintaining cellular homeostasis.
- Linked the regulation of MFF translation to the modulation of cellular aging processes.
Conclusions:
- Translational control of MFF is a significant molecular mechanism influencing cellular aging.
- Understanding these post-transcriptional mechanisms offers new avenues for research into age-related decline.
Related Concept Videos
Translational Regulation
Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of...
Epigenetic Regulation
Initiation of Translation
First, the initiator tRNA must be selected from the pool of elongator tRNAs by eukaryotic initiation factor 2 (eIF2). The initiator tRNA (Met-tRNAi) has conserved sequence elements including modified bases at...
Termination of Translation
Regulation of Expression Occurs at Multiple Steps
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...

