Related Experiment Video
Updated: May 29, 2026
08:47
Monitoring eIF4F Assembly by Measuring eIF4E-eIF4G Interaction in Live Cells
Published on: May 1, 2020
eIF4G2-Dependent Translation Restrains Pancreatic Cancer Progression
Justin Powers1,2, Lai Wei3, Justin Chak Ting Cheung1,2
1Institute for Cancer Genetics, Department of Genetics and Development, Columbia University Irving Medical Center, New York, New York.
Cancer Research
|May 27, 2026
Summary
The non-canonical translation factor eIF4G2 restrains pancreatic ductal adenocarcinoma (PDAC) progression. Loss of eIF4G2 promotes tumor growth and metastasis, highlighting its role in controlling malignant plasticity.
Area of Science:
- Molecular Biology
- Cancer Research
- Translational Control
Background:
- Pancreatic ductal adenocarcinoma (PDAC) lethality is linked to cellular plasticity, dedifferentiation, and dissemination.
- Transcriptional programs are understood, but translational control's role in PDAC cell-state regulation requires further investigation.
- Targeting translational control may offer strategies to limit PDAC's malignant plasticity.
Purpose of the Study:
- To identify translational regulators controlling PDAC cell-state and progression in vivo.
- To elucidate the function of the non-canonical initiation factor eIF4G2 in PDAC.
- To understand the therapeutic potential of targeting eIF4G2 for PDAC treatment.
Main Methods:
- Genome-wide CRISPR/Cas9 screening in immunocompetent hosts.
- Ribosome profiling to analyze mRNA translation.
- Analysis of human PDAC datasets and patient-derived cells.
Main Results:
- Loss of eIF4G2 (DAP5/NAT1) accelerated PDAC tumor growth, promoted dedifferentiation, and increased metastasis.
- eIF4G2 selectively translates mRNAs with structured 5' UTRs, including tumor suppressors like Pten.
- Reduced eIF4G2 expression in human PDAC correlates with poor differentiation, metastasis, and reduced survival.
Conclusions:
- Non-canonical translation initiation, mediated by eIF4G2, is crucial for PDAC cell-state control.
- eIF4G2 acts as a barrier against malignant plasticity and metastatic dissemination in PDAC.
- eIF4G2 represents a potential therapeutic target for inhibiting PDAC progression.
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