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Updated: Aug 5, 2026

Methods to Enable Spatial Transcriptomics of Bone Tissues
Published on: May 3, 2024
Proteome-wide Multi-omics Profiling of Osteosarcoma Transcription Factor Networks
Nguyen Xuan Thang1, Emily Martinsen1, Mohamed Abdelhalim1
1Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Oslo, Norway; Centre for Cancer Cell Reprogramming, Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway.
This study identifies key transcription factors (TFs) driving aggressive osteosarcoma (OS) behavior. RUNX2 and MYBL2 are linked to increased invasiveness, while ETV5, TBX15, and USF1 may play roles in less aggressive forms.
Area of Science:
- Oncology
- Molecular Biology
- Genomics
Background:
- Osteosarcoma (OS) is an aggressive bone cancer in young individuals, characterized by genomic complexity and cellular plasticity.
- Dynamic transcriptional regulation is implicated in OS treatment resistance and metastasis.
- Specific OS cell lines (HOS, U2OS, MG63) exhibit varying invasiveness and migratory abilities, serving as models for OS biology.
Purpose of the Study:
- To characterize transcription factor (TF) regulatory networks associated with osteosarcoma aggressiveness using a proteomic approach.
- To identify cell line-dependent TFs and coregulators common or specific to different OS cell lines.
- To explore the potential of identified TFs as markers for OS aggressiveness and metastasis.
Main Methods:
- Employed a tandem array of consensus transcription factor response elements (catTFREs) proteomic approach.
- Mapped 7355 proteins and enriched 504 TFs and coregulators.
- Integrated proteomics data with cell line-specific gene expression, H3K27ac enhancers, and chromatin accessibility data.
Main Results:
- Classified proteins into OS cell line-dependent TFs and coregulators.
- Identified RUNX2 and MYBL2 as TFs specifically enriched in highly invasive HOS and U2OS cells, with increased expression in metastatic OS tumors.
- Found ETV5, TBX15, and USF1 as TFs specific to the less migratory MG63 cell line, with higher expression in primary OS tumors.
Conclusions:
- Provided a comprehensive understanding of transcriptional drivers in osteosarcoma.
- Highlighted RUNX2 and MYBL2 as potential markers for OS aggressiveness and metastasis.
- Suggested ETV5, TBX15, and USF1 as TFs associated with less aggressive OS, warranting further validation.
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