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Updated: May 20, 2026

Cell-Based Drug Screening for Inhibitors of Autophagy Related 4B Cysteine Peptidase
Published on: June 30, 2023
Therapeutic targets in cancer cell metabolism and autophagy
Heesun Cheong1, Chao Lu, Tullia Lindsten
1Cancer Biology and Genetics Program, Sloan-Kettering Institute, Memorial Sloan-Kettering Cancer Center, New York, New York, USA.
Abstract:
The metabolism of cancer cells is reprogrammed both by oncogene signaling and by dysregulation of metabolic enzymes. The resulting altered metabolism supports cellular proliferation and survival but leaves cancer cells dependent on a continuous supply of nutrients. Thus, many metabolic enzymes have become targets for new cancer therapies. Recently, two processes—expression of specific isoforms of metabolic enzymes and autophagy—have been shown to be crucial for the adaptation of tumor cells to changes in nutrient availability. An increasing number of approved and experimental therapeutics target these two processes. A better understanding of the molecular basis of cancer-associated metabolic changes may lead to improved cancer therapies.
Insights
Cancer cells reprogram metabolism for survival, creating nutrient dependencies targeted by new therapies. Understanding these metabolic changes and cellular adaptation processes like autophagy is key to developing improved cancer treatments.
Area of Science:
- Oncology
- Molecular Biology
- Metabolism
Background:
- Cancer cells exhibit altered metabolism driven by oncogene signaling and metabolic enzyme dysregulation.
- This metabolic reprogramming supports tumor cell proliferation and survival, leading to nutrient dependency.
- Metabolic enzymes are recognized as crucial targets for novel cancer therapies.
Purpose of the Study:
- To explore the critical roles of specific metabolic enzyme isoforms and autophagy in tumor cell adaptation to nutrient fluctuations.
- To highlight the therapeutic potential of targeting these adaptive mechanisms in cancer treatment.
Main Methods:
- Review of current literature on cancer metabolism, oncogene signaling, and metabolic enzyme function.
- Analysis of the role of specific enzyme isoforms and autophagy in cancer cell survival and proliferation.
- Examination of existing and experimental therapeutics targeting these pathways.
Main Results:
- Expression of specific metabolic enzyme isoforms and autophagy are vital for cancer cell adaptation to nutrient availability.
- These processes render cancer cells vulnerable to targeted therapeutic interventions.
- A growing number of approved and experimental drugs target these identified pathways.
Conclusions:
- Understanding the molecular underpinnings of cancer-associated metabolic alterations is essential for advancing therapeutic strategies.
- Targeting metabolic enzyme expression and autophagy presents a promising avenue for improved cancer therapies.
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