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Updated: Jul 25, 2025

Transfer of Manipulated Tumor-associated Neutrophils into Tumor-Bearing Mice to Study their Angiogenic Potential In Vivo
Published on: July 20, 2019
Interferon signaling promotes tolerance to chromosomal instability during metastatic evolution in renal cancer
Luigi Perelli1, Federica Carbone2,3, Li Zhang2
1Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA. LPerelli@mdanderson.org.
Abstract:
Molecular routes to metastatic dissemination are critical determinants of aggressive cancers. Through in vivo CRISPR-Cas9 genome editing, we generated somatic mosaic genetically engineered models that faithfully recapitulate metastatic renal tumors. Disruption of 9p21 locus is an evolutionary driver to systemic disease through the rapid acquisition of complex karyotypes in cancer cells. Cross-species analysis revealed that recurrent patterns of copy number variations, including 21q loss and dysregulation of the interferon pathway, are major drivers of metastatic potential. In vitro and in vivo genomic engineering, leveraging loss-of-function studies, along with a model of partial trisomy of chromosome 21q, demonstrated a dosage-dependent effect of the interferon receptor genes cluster as an adaptive mechanism to deleterious chromosomal instability in metastatic progression. This work provides critical knowledge on drivers of renal cell carcinoma progression and defines the primary role of interferon signaling in constraining the propagation of aneuploid clones in cancer evolution.
Insights
Understanding cancer metastasis is key. This study reveals how genetic changes, like 9p21 disruption and interferon pathway alterations, drive kidney cancer spread and how interferon signaling limits aggressive tumor evolution.
Area of Science:
- Oncology
- Genetics
- Cancer Biology
Background:
- Metastatic dissemination is a critical determinant of aggressive cancers.
- Understanding the molecular drivers of metastatic progression is essential for developing effective therapies.
Purpose of the Study:
- To investigate the genetic alterations driving metastatic renal tumors.
- To elucidate the role of interferon signaling in constraining aneuploid clone propagation during cancer evolution.
Main Methods:
- In vivo CRISPR-Cas9 genome editing to generate somatic mosaic genetically engineered models.
- Cross-species analysis of copy number variations.
- In vitro and in vivo genomic engineering with loss-of-function studies.
- Development of a model for partial trisomy of chromosome 21q.
Main Results:
- Disruption of the 9p21 locus drives systemic disease through rapid acquisition of complex karyotypes.
- Recurrent copy number variations, including 21q loss and interferon pathway dysregulation, are major drivers of metastatic potential.
- Interferon receptor gene cluster exhibits a dosage-dependent effect in managing chromosomal instability during metastatic progression.
Conclusions:
- Interferon signaling plays a crucial role in constraining the propagation of aneuploid clones in cancer evolution.
- This work provides critical knowledge on the drivers of renal cell carcinoma progression.
- Identified key molecular routes and genetic alterations contributing to metastatic dissemination in kidney cancer.
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