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Lin28 and let-7 in cell metabolism and cancer
1Children's Research Institute, Departments of Pediatrics and Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
Abstract:
Malignant cells exhibit major metabolic alterations. The regulatory gene networks that regulate metabolism and the impact of these alterations on overall cellular fitness deserve further exploration. The let-7 microRNAs and their antagonists, the Lin28 RNA-binding proteins, are well-known for controlling the timing of embryonic development. This pathway has recently been shown to regulate glucose metabolism in adult mice and to reprogram metabolism during tissue injury and repair. In addition, many lines of evidence have established that Lin28 is an oncogene that drives tumorigenesis in part by suppressing let-7. The metabolic underpinnings of this oncogenic program are just beginning to be uncovered. Here, we will review the current understanding of how Lin28 exerts regenerative and oncogenic effects through metabolic mechanisms.
Insights
The Lin28 RNA-binding protein and let-7 microRNA pathway regulates cell metabolism. This pathway influences tissue repair and drives cancer development by altering cellular metabolism.
Area of Science:
- Cellular metabolism
- Developmental biology
- Oncogenesis
Background:
- Malignant cells display significant metabolic changes.
- The let-7 microRNA and Lin28 RNA-binding protein pathway regulates embryonic development.
- Lin28 is an oncogene that promotes tumorigenesis by suppressing let-7.
Purpose of the Study:
- To review the current understanding of how Lin28 affects cellular metabolism.
- To explore the regenerative and oncogenic effects mediated by metabolic mechanisms of Lin28.
Main Methods:
- Literature review of studies on Lin28, let-7, and cellular metabolism.
- Analysis of the role of Lin28 in regulating glucose metabolism.
- Examination of the metabolic reprogramming during tissue repair and injury.
Main Results:
- The Lin28/let-7 pathway is implicated in regulating glucose metabolism in adult mice.
- Lin28 reprograms cellular metabolism during tissue injury and repair.
- Lin28's oncogenic program is increasingly understood through its metabolic effects.
Conclusions:
- The Lin28/let-7 pathway plays a critical role in metabolic regulation.
- Lin28 utilizes metabolic mechanisms to promote both regeneration and oncogenesis.
- Further research into these metabolic underpinnings is crucial for understanding cancer and development.
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