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Updated: Aug 8, 2026

Xenopus laevis as a Model to Identify Translation Impairment
Published on: September 27, 2015
[When translation arises from its TORpor]
Olivier Le Bacquer1, Yvan Martineau, Yaël Mamane
1Laboratoire du Dr Nahum Sonenberg, Département de Biochimie, Université McGill, 3655, Promenade Sir-William-Osler, Montréal (Québec), H3G 1Y6 Canada.
Abstract:
Gene regulation by transcriptional and post-translational mechanisms is implicated in the regulation of cellular homeostasis. Transcriptional deregulation has been largely documented in the etiology of diseases such as cancer, obesity and diabetes. During the past decade, the control of translation initiation by the PI3K/Akt/mTOR pathway in the development of these pathologies has been documented. Rapamycin, a specific inhibitor of mTOR, demonstrates considerable anti-proliferative activity against numerous cancer types. Recent studies also demonstrated that rapamycin may be beneficial in the treatment of obesity and diabetes. Rapamycin and its analogs seem destined for a promising future and will help in the development of novel therapeutic strategies.
Insights
Gene regulation impacts cellular balance, with disruptions linked to cancer, obesity, and diabetes. The PI3K/Akt/mTOR pathway and rapamycin show promise for novel therapeutic strategies.
Area of Science:
- Molecular Biology
- Cellular Biology
- Medical Science
Background:
- Gene regulation via transcriptional and post-translational mechanisms is crucial for cellular homeostasis.
- Deregulation of gene expression is a known factor in diseases like cancer, obesity, and diabetes.
- The PI3K/Akt/mTOR pathway's role in translation initiation has been increasingly recognized in disease development.
Purpose of the Study:
- To review the role of gene regulation, particularly translation initiation via the PI3K/Akt/mTOR pathway, in cellular homeostasis and disease.
- To highlight the therapeutic potential of rapamycin, an mTOR inhibitor, in various pathologies.
Main Methods:
- Literature review focusing on gene regulation mechanisms.
- Analysis of studies investigating the PI3K/Akt/mTOR pathway.
- Examination of research on rapamycin's effects in cancer, obesity, and diabetes.
Main Results:
- Transcriptional deregulation is implicated in major diseases.
- The PI3K/Akt/mTOR pathway significantly controls translation initiation.
- Rapamycin exhibits anti-proliferative effects in cancer and potential benefits in obesity and diabetes.
Conclusions:
- Rapamycin and its analogs represent a promising therapeutic avenue.
- Targeting the PI3K/Akt/mTOR pathway offers potential for novel treatment strategies.
- Further development of rapamycin-based therapies is warranted for diverse diseases.
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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 Life
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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.
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Termination of Translation

