AI Article Synopsis
- * Researchers conducted a genetic screening in mice to find genes linked to osteosarcoma development and metastasis, identifying over 200 critical sites related to tumor growth and spread.
- * They discovered genes involved in important signaling pathways and oncogenes related to axon guidance, validating specific genes like Sema4d and Sema6d as significant contributors to human osteosarcoma.
Article Abstract
Osteosarcomas are sarcomas of the bone, derived from osteoblasts or their precursors, with a high propensity to metastasize. Osteosarcoma is associated with massive genomic instability, making it problematic to identify driver genes using human tumors or prototypical mouse models, many of which involve loss of Trp53 function. To identify the genes driving osteosarcoma development and metastasis, we performed a Sleeping Beauty (SB) transposon-based forward genetic screen in mice with and without somatic loss of Trp53. Common insertion site (CIS) analysis of 119 primary tumors and 134 metastatic nodules identified 232 sites associated with osteosarcoma development and 43 sites associated with metastasis, respectively. Analysis of CIS-associated genes identified numerous known and new osteosarcoma-associated genes enriched in the ErbB, PI3K-AKT-mTOR and MAPK signaling pathways. Lastly, we identified several oncogenes involved in axon guidance, including Sema4d and Sema6d, which we functionally validated as oncogenes in human osteosarcoma.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4767150 | PMC |
| http://dx.doi.org/10.1038/ng.3293 | DOI Listing |
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