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Transposon Mediated Integration of Plasmid DNA into the Subventricular Zone of Neonatal Mice to Generate Novel Models of Glioblastoma
Published on: February 22, 2015
Identifying candidate genes involved in brain tumor formation
1Department of Genetics and Pathology, The Rudbeck Laboratory, Uppsala University, Sweden. fredrik.johansson@genpat.uu.se
Upsala Journal of Medical Sciences
|June 4, 2008
Summary
Retroviral tagging identified novel genes cooperating with platelet-derived growth factor (PDGF) in mouse brain tumor formation. This method aids in discovering genes crucial for glioma development and progression.
Area of Science:
- Oncology
- Genetics
- Molecular Biology
Background:
- Malignant gliomas, including Glioblastoma multiforme (GBM), are aggressive brain tumors driven by platelet-derived growth factor (PDGF) signaling.
- Current treatments for GBM are limited, with a median survival of only 12-14 months.
Purpose of the Study:
- To utilize retroviral tagging to identify novel cancer-causing genes that cooperate with PDGF in brain tumor formation.
- To analyze gene expression and common insertion sites (CISs) in experimentally induced gliomas.
Main Methods:
- Newborn mice were intracerebrally injected with a retrovirus encoding the sis/PDGF-B oncogene.
- Proviral integration analysis identified common insertion sites (CISs) or brain tumor loci.
- Microarray analysis was performed on mouse brain tumors and normal brain tissue.
Main Results:
- Retroviral tagging identified nearly 70 common insertion sites (CISs) in induced brain tumors.
- Upregulation of known tumor genes and immature cell markers was observed in tumors.
- Tumor latency correlated with aggressiveness, with short-latency tumors resembling GBM and long-latency tumors resembling oligodendrogliomas.
Conclusions:
- Retroviral tagging is an effective tool for identifying candidate glioma genes.
- Several novel candidate genes with potential roles in tumorigenesis were discovered.
- Understanding these cooperating genes can provide new therapeutic targets for malignant gliomas.
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