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Updated: Dec 5, 2025

Three-Dimensional Bone Extracellular Matrix Model for Osteosarcoma
Published on: April 12, 2019
Identification of Abnormal Spindle Microtubule Assembly as a Promising Therapeutic Target for Osteosarcoma
Peng Lin1, Li-Yan Liang1, Yao-Zhong Dong2
1Department of Intensive Care Unit, Yantai Yuhuangding Hospital, Yantai, China.
Objective:
To demonstrate the expression of abnormal spindle microtubule assembly (ASPM) in clinical osteosarcoma tissue specimens collected in our hospital, and to explore the function of ASPM in osteosarcoma in vitro and in vivo.
Methods:
Tissue specimens from 82 cases of osteosarcoma were collected and analyzed by immunohistochemistry assay. We also investigated the relationship between ASPM expression and clinicopathological characteristics in the patients. We transfected shASPM plasmid and the empty control plasmid, respectively, and then used quantitative polymerase chain reaction and western blot analysis to detect ASPM expression. Cell colony assay and MTT were used to observe the proliferation ability. In vivo study was undertaken to explore the ASPM function further.
Results:
In this study, ASPM showed high expression in osteosarcoma tissue samples compared with non-tumor normal tissues. ASPM was positively correlated with clinical pathological characteristics, including tumor size (P = 0.024) and clinical stage (P = 0.045). Our results further showed that ASPM depletion dramatically inhibited the proliferation of osteosarcoma cells (with fewer cells in the sh-RNA-ASPM group compared with the control group(P < 0.05, respectively), and the in vivo assays further confirmed that ASPM ablation markedly blocked tumor growth compared with control (P < 0.05).
Conclusion:
Our data provides strong evidence that the high expression of ASPM in osteosarcoma promotes proliferation in vitro and in vivo, indicating its potential role as an osteosarcoma therapeutic target.
Insights
High expression of abnormal spindle microtubule assembly (ASPM) in osteosarcoma promotes tumor growth. Inhibiting ASPM significantly reduced osteosarcoma cell proliferation in vitro and in vivo, suggesting ASPM as a potential therapeutic target.
Area of Science:
- Oncology
- Molecular Biology
- Cell Biology
Background:
- Abnormal spindle microtubule assembly (ASPM) is implicated in various cancers.
- The role of ASPM in osteosarcoma pathogenesis requires further elucidation.
Purpose of the Study:
- To investigate the expression of ASPM in clinical osteosarcoma tissues.
- To explore the functional role of ASPM in osteosarcoma cell proliferation and tumor growth in vitro and in vivo.
Main Methods:
- Immunohistochemistry was used to analyze ASPM expression in 82 osteosarcoma specimens.
- ASPM knockdown was achieved using shASPM plasmid transfection.
- Quantitative PCR, Western blot, cell colony assays, MTT assays, and in vivo studies were performed.
Main Results:
- ASPM was significantly overexpressed in osteosarcoma tissues compared to normal tissues.
- High ASPM expression correlated positively with tumor size and clinical stage.
- ASPM depletion inhibited osteosarcoma cell proliferation and tumor growth in vitro and in vivo.
Conclusions:
- Elevated ASPM expression promotes osteosarcoma proliferation and tumor growth.
- ASPM represents a potential therapeutic target for osteosarcoma treatment.
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