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Analysis of Combinatorial miRNA Treatments to Regulate Cell Cycle and Angiogenesis
Published on: March 30, 2019
Cell cycle regulator gene CDC5L, a potential target for 6p12-p21 amplicon in osteosarcoma
Xin-Yan Lu1, Yaojuan Lu, Yi-Jue Zhao
1Texas Children's Cancer Center, Baylor College of Medicine, 6621 Fannin Street, MC 3-3320, Houston, TX 77030, USA.
Molecular Cancer Research : MCR
|June 24, 2008
Summary
Osteosarcoma, a primary bone cancer, frequently shows amplification at 6p12-p21. Researchers identified CDC5L as a likely oncogene in this region, showing overexpression and potential oncogenic activity in osteosarcoma.
Area of Science:
- Oncology
- Genetics
- Molecular Biology
Background:
- Osteosarcoma is the most common primary malignant bone tumor, originating from bone-forming mesenchymal cells.
- Frequent genomic amplifications, particularly at 6p12-p21, are observed in osteosarcoma and linked to poor prognosis.
- The 6p12-p21 amplicon is of significant interest for identifying potential driver oncogenes.
Purpose of the Study:
- To identify and characterize aberrantly expressed genes within the 6p12-p21 amplicon in osteosarcoma.
- To investigate the oncogenic potential of candidate genes identified in the amplified region.
Main Methods:
- Comparative genomic hybridization (CGH) and region-specific array CGH were used to refine the 6p amplicon.
- Quantitative reverse transcription-PCR (qRT-PCR) was employed to analyze gene expression.
- Western blotting and immunohistochemistry were utilized to assess protein expression.
- In vivo assays were performed to evaluate oncogenic activity.
Main Results:
- The 6p amplicon was refined to a 7.9 Mb region, identifying 10 amplified clones with potential target genes.
- Amplification and overexpression of CDC5L, CCND3, and RUNX2 were identified.
- CDC5L protein was overexpressed in osteosarcoma samples and cell lines.
- In vivo assays demonstrated that CDC5L possesses oncogenic activity.
Conclusions:
- CDC5L is identified as the most probable candidate oncogene within the 6p12-p21 amplicon in osteosarcoma.
- CDC5L, a cell cycle regulator crucial for G2-M transition, plays a significant role in osteosarcoma development.
- These findings highlight CDC5L as a potential therapeutic target for osteosarcoma.
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