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Shepherdin Affects the Biological Behavior of Rhabdomyosarcoma and Enhances its X-Ray Sensitivity
Li Niu1, Mei Kang1, Menghuan Yao2
1Department of Radiotherapy, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China.
Applied Biochemistry and Biotechnology
|June 9, 2026
Summary
Shepherdin, a survivin inhibitor, impacts rhabdomyosarcoma cell growth and cycle. It also sensitizes these cells to X-ray irradiation, showing therapeutic potential for rhabdomyosarcoma.
Area of Science:
- Oncology
- Cell Biology
Background:
- Shepherdin is a survivin inhibitor used for tumor suppression.
- Limited research exists on shepherdin's effects on rhabdomyosarcoma (RMS) cell behaviors beyond tumor growth.
Purpose of the Study:
- To investigate the role of shepherdin in regulating RMS cell biological behaviors.
- To explore shepherdin's impact on RMS cell growth, cytoskeleton, and cell cycle.
- To assess shepherdin's potential to enhance RMS sensitivity to X-ray irradiation.
Main Methods:
- Treatment of RMS cells with shepherdin.
- Analysis of RMS cell growth, cytoskeleton, and cell cycle progression.
- Evaluation of FAK (Focal Adhesion Kinase) expression.
- Assessment of RMS sensitivity to X-ray irradiation in vitro and in vivo.
- Survivin knockdown experiments.
Main Results:
- Shepherdin significantly affects RMS cell growth, cytoskeleton, and cell cycle progression.
- Shepherdin downregulates FAK expression, causing cytoskeleton disruption and G0/G1 and G2/M phase cell cycle arrest.
- Both shepherdin treatment and survivin knockdown increased RMS sensitivity to X-ray irradiation.
- Enhanced radiosensitivity was indicated by reduced clone formation, increased apoptosis, cell cycle arrest, and inhibited proliferation.
Conclusions:
- Shepherdin modulates RMS cell biological behavior, including growth, cytoskeleton, and cell cycle.
- Shepherdin enhances the radiosensitivity of rhabdomyosarcoma cells.
- Shepherdin presents a potential therapeutic strategy for rhabdomyosarcoma, particularly in combination with X-ray irradiation.
