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Author Spotlight: A Selective Luciferase-Based Assay for Monitoring ATG4B 27 Activity in Cells
Published on: June 30, 2023
Chaperone-mediated autophagy in cancer: Advances from bench to bedside
Tao Hou1, Yizeng Fan1, Weichao Dan1
1Department of Urology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.
Abstract:
Chaperone-mediated autophagy (CMA), a selective form of autophagy, where cellular proteins with KFERQ-like motif are targeted to the lysosome for degradation, is necessary to maintain cellular homeostasis. The role of CMA in neurodegenerative diseases has been extensively studied in the past decades, with defects in the pathway being strongly associated with disease. Recently, accumulating evidence has demonstrated a consistent increase in basal CMA activity in a wide array of cancer cell lines and human tumor biopsies, suggesting a potential link between CMA and cancer. On the other hand, an anti-oncogenic role for CMA under physiological conditions in non-transformed cells is also proposed despite the pro-tumorigenic function of CMA in cancer cells. The growing number of connections between CMA and cancers has generated interest in modulating CMA activity for therapeutic purposes. Here, we describe recent advances in the understanding of the molecular regulation of CMA, and discuss the evidence in support of the contribution of CMA dysfunction to cancers.
Insights
Chaperone-mediated autophagy (CMA) is crucial for cell health and homeostasis. Recent studies reveal CMA
Area of Science:
- Cellular Biology
- Molecular Biology
- Oncology
Background:
- Chaperone-mediated autophagy (CMA) is a selective degradation pathway essential for cellular homeostasis.
- Defects in CMA are linked to neurodegenerative diseases.
- CMA activity is consistently increased in various cancer types, suggesting a role in tumorigenesis.
Purpose of the Study:
- To review recent advances in understanding the molecular regulation of CMA.
- To discuss the evidence linking CMA dysfunction to cancer development and progression.
- To explore the potential of modulating CMA for cancer therapy.
Main Methods:
- Literature review of recent studies on CMA.
- Analysis of evidence connecting CMA activity to cancer cell lines and tumor biopsies.
- Discussion of molecular mechanisms underlying CMA regulation.
Main Results:
- CMA activity is elevated in numerous cancer types.
- CMA plays a dual role: potentially anti-oncogenic in normal cells but pro-tumorigenic in cancer cells.
- Evidence supports CMA dysfunction's contribution to cancer.
Conclusions:
- CMA's complex role in cancer warrants further investigation.
- Modulating CMA activity presents a potential therapeutic strategy for cancer.
- Understanding CMA regulation is key to developing targeted cancer therapies.
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