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Updated: Jul 30, 2025
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Modeling Osteosarcoma Using Li-Fraumeni Syndrome Patient-derived Induced Pluripotent Stem Cells
Published on: June 13, 2018
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Modeling Global Genomic Instability in Chronic Myeloid Leukemia (CML) Using Patient-Derived Induced Pluripotent Stem
Gladys Telliam1,2, Christophe Desterke1,2, Jusuf Imeri1
1INSERM UMR_S_1310, Université Paris Saclay, 94800 Villejuif, France.
Cancers
|May 13, 2023
Summary
Researchers created a novel in vitro model of genetic instability using patient-derived induced pluripotent stem cells (iPSCs) treated with N-ethyl-N-nitrosourea (ENU). This model successfully replicates genomic events observed in patients with blast crisis (BC).
Area of Science:
- Stem cell biology
- Cancer genomics
- Genomic instability research
Background:
- Patient-specific induced pluripotent stem cells (iPSCs) offer a valuable tool for disease modeling.
- Understanding genomic alterations in leukemia progression is crucial for developing targeted therapies.
Purpose of the Study:
- To establish an in vitro model of genetic instability using mutagenized iPSCs.
- To identify genomic events and cancer genes associated with leukemia progression in this model.
Main Methods:
- Treatment of a patient-specific iPSC line with N-ethyl-N-nitrosourea (ENU).
- Validation of genomic instability using γ-H2AX, micronuclei assays, and comparative genomic hybridization (CGH) array.
- Transcriptome analysis using GEO dataset GSE4170.
Main Results:
- Mutagenized iPSCs showed a 5-fold increase in progenitors with blast cell morphology.
- CGH array identified known leukemia-associated cancer genes (e.g., BLM, IKZF1, ALK) in ENU-treated cells.
- 125 detected aberrations were linked to chronic myeloid leukemia (CML) progression genes, with 11 associated with tyrosine kinase inhibitor resistance.
Conclusions:
- Successfully generated an in vitro genetic instability model.
- The model reproduces genomic events found in blast crisis (BC) patients.
- Provides a platform for studying leukemia pathogenesis and therapeutic resistance.
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