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Updated: Jan 27, 2026

Intratibial Osteosarcoma Cell Injection to Generate Orthotopic Osteosarcoma and Lung Metastasis Mouse Models
Published on: October 28, 2021
APLNR promotes the progression of osteosarcoma by stimulating cell proliferation and invasion
Lei Cui1, Jing-Yuan Zhang2, Zhi-Peng Ren3
1Departments of Ophthalmology Surgery.
Abstract:
Osteosarcoma is the most common type of bone malignancies with a poor prognosis. In recent years, targeted therapy has shown great potential in the treatment of osteosarcoma, and more effective therapeutic targets for this disease need to be developed. APLNR is a seven transmembrane G-protein-coupled receptor expressed widely in multiple tissues. As has been reported, APLNR is involved in various physiological and pathological processes. Although APLNR plays a role in the development and progression of multiple tumors, the potential role of APLNR in osteosarcoma, a highly malignant tumor, remains unclear. Here, we reported that APLNR expression was correlated positively with clinical features including tumor size and stage of osteosarcoma. We found that APLNR knockdown inhibited the proliferation and invasion of osteosarcoma cells in vitro. In addition, APLNR could promote the progression and metastasis of osteosarcoma in mice. Collectively, this study showed the potential link between APLNR and osteosarcoma and suggested APLNR as a novel therapeutic target for osteosarcoma.
Insights
Apelin receptor (APLNR) promotes osteosarcoma growth and spread. Targeting APLNR may offer a new therapeutic strategy for this aggressive bone cancer.
Area of Science:
- Oncology
- Molecular Biology
- G-protein coupled receptor signaling
Background:
- Osteosarcoma is a prevalent bone malignancy with limited treatment options.
- Targeted therapies are emerging for osteosarcoma, necessitating new therapeutic targets.
- The role of the apelin receptor (APLNR) in osteosarcoma progression is currently unknown.
Purpose of the Study:
- To investigate the role of APLNR in osteosarcoma development and progression.
- To evaluate APLNR as a potential therapeutic target for osteosarcoma.
Main Methods:
- Analysis of APLNR expression in osteosarcoma patient samples.
- In vitro studies involving APLNR knockdown in osteosarcoma cell lines to assess proliferation and invasion.
- In vivo studies using mouse models to evaluate the effect of APLNR on tumor progression and metastasis.
Main Results:
- APLNR expression positively correlates with osteosarcoma tumor size and stage.
- APLNR knockdown significantly inhibits osteosarcoma cell proliferation and invasion in vitro.
- APLNR promotes osteosarcoma progression and metastasis in vivo.
Conclusions:
- APLNR is implicated in the progression of osteosarcoma.
- APLNR represents a promising novel therapeutic target for osteosarcoma treatment.
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