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Published on: July 22, 2020
Lin28 Regulates Cancer Cell Stemness for Tumour Progression
Zhuohui Lin1,2, Mariia Radaeva3, Artem Cherkasov3
1Department of Microbiology and Immunology, University of British Columbia, Vancouver, BC V6T 1Z4, Canada.
Abstract:
Tumours develop therapy resistance through complex mechanisms, one of which is that cancer stem cell (CSC) populations within the tumours present self-renewable capability and phenotypical plasticity to endure therapy-induced stress conditions and allow tumour progression to the therapy-resistant state. Developing therapeutic strategies to cope with CSCs requires a thorough understanding of the critical drivers and molecular mechanisms underlying the aforementioned processes. One such hub regulator of stemness is Lin28, an RNA-binding protein. Lin28 blocks the synthesis of let-7, a tumour-suppressor microRNA, and acts as a global regulator of cell differentiation and proliferation. Lin28also targets messenger RNAs and regulates protein translation. In this review, we explain the role of the Lin28/let-7 axis in establishing stemness, epithelial-to-mesenchymal transition, and glucose metabolism reprogramming. We also highlight the role of Lin28 in therapy-resistant prostate cancer progression and discuss the emergence of Lin28-targeted therapeutics and screening methods.
Insights
Cancer stem cells (CSCs) drive therapy resistance. The Lin28/let-7 axis regulates CSC stemness, impacting treatment outcomes and offering new therapeutic targets for resistant cancers.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Stem Cell Biology
Background:
- Tumorigenesis is frequently driven by cancer stem cells (CSCs) possessing self-renewal and plasticity.
- CSCs contribute significantly to therapy resistance and tumor progression.
- Understanding CSC regulation is crucial for developing effective cancer treatments.
Purpose of the Study:
- To elucidate the role of the Lin28/let-7 axis in CSC-mediated therapy resistance.
- To explore Lin28's function in regulating stemness, epithelial-to-mesenchymal transition, and glucose metabolism.
- To review Lin28-targeted therapeutics for prostate cancer.
Main Methods:
- Review of existing literature on the Lin28/let-7 axis and cancer stem cells.
- Analysis of molecular mechanisms regulating stemness and therapy resistance.
- Discussion of therapeutic strategies targeting Lin28.
Main Results:
- Lin28 acts as a key regulator of stemness by inhibiting the tumor-suppressor microRNA let-7.
- The Lin28/let-7 axis influences epithelial-to-mesenchymal transition and glucose metabolism reprogramming.
- Lin28 plays a critical role in the progression of therapy-resistant prostate cancer.
Conclusions:
- The Lin28/let-7 axis is a critical determinant of CSC properties and therapy resistance.
- Targeting Lin28 presents a promising therapeutic strategy for overcoming treatment resistance in prostate cancer.
- Further research into Lin28-targeted therapeutics and screening methods is warranted.
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