Cancer translocations in human cells induced by zinc finger and TALE nucleases.

Authors:
Piganeau M, Ghezraoui H, De Cian A, Guittat L, Tomishima M, Perrouault L, René O, Katibah GE, Zhang L, Holmes MC, Doyon Y, Concordet JP, Giovannangeli C, Jasin M, Brunet E.
In:
Source: Genome Res
Publication Date: (2013)
Issue: 23(7): 1182-93
Research Area:
Cancer Research/Cell Biology
Immunotherapy / Hematology
Stem Cells
Gene Expression
Cells used in publication:
Jurkat
Species: human
Tissue Origin: blood
SUP-T1
Species: human
Tissue Origin: blood
Embryonic Stem Cell (ES), human
Species: human
Tissue Origin: embryo
5838 Ewing's
Species: human
Tissue Origin:
SU-DHL-4
Species: human
Tissue Origin:
Epithelial, retinal pigment (RPE), human
Species: human
Tissue Origin: eye
Culture Media:
Platform:
Nucleofector™ I/II/2b
Experiment

7.5x10e5 cells of hES-MP : solution V, program B-016 7.5x10e5 cells of RPE-1: solution V, X-001 2x10e6 cells of Jurkat, SUDHL-1, SUPM2; solution V, program X-001 DNA: 7.5µg of each ZFN EWS and 5µg of each ZFNFLI1 or 5µg TAL-NPM and 2µg of TAL-ALK

Abstract

Chromosomal translocations are signatures of numerous cancers and lead to expression of fusion genes that act as oncogenes. The wealth of genomic aberrations found in cancer, however, makes it challenging to assign a specific phenotypic change to a specific aberration. In this study, we set out to use genome editing with zinc finger (ZFN) and transcription activator-like effector (TALEN) nucleases to engineer, de novo, translocation-associated oncogenes at cognate endogenous loci in human cells. Using ZFNs and TALENs designed to cut precisely at relevant translocation breakpoints, we induced cancer-relevant t(11;22)(q24;q12) and t(2;5)(p23;q35) translocations found in Ewing sarcoma and anaplastic large cell lymphoma (ALCL), respectively. We recovered both translocations with high efficiency, resulting in the expression of the EWSR1-FLI1 and NPM1-ALK fusions. Breakpoint junctions recovered after ZFN cleavage in human embryonic stem (ES) cell-derived mesenchymal precursor cells fully recapitulated the genomic characteristics found in tumor cells from Ewing sarcoma patients. This approach with tailored nucleases demonstrates that expression of fusion genes found in cancer cells can be induced from the native promoter, allowing interrogation of both the underlying mechanisms and oncogenic consequences of tumor-related translocations in human cells. With an analogous strategy, the ALCL translocation was reverted in a patient cell line to restore the integrity of the two participating chromosomes, further expanding the repertoire of genomic rearrangements that can be engineered by tailored nucleases.