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Updated: Feb 5, 2026
07:55
Establishment of a Primary Culture of Patient-derived Soft Tissue Sarcoma
Published on: April 11, 2018
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The Anti-Apoptotic Protein Lifeguard Is Expressed in Osteosarcoma, Chondrosarcoma, and Soft Tissue Sarcoma
Sebastian Senger1, Frederik Schlottmann2, Sarah Strauß2
1Department of Plastic, Aesthetic, Hand and Reconstructive Surgery, Hannover Medical School, Hannover, Germany, sebastian-senger@gmx.de.
Oncology
|February 3, 2026
Summary
Lifeguard (LFG) protein is highly expressed in osteosarcoma and soft tissue sarcoma, potentially inhibiting apoptosis. Increased LFG expression correlates with advanced tumor stages, suggesting its role in sarcoma progression and potential as a therapeutic target.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Research
Background:
- Chemotherapy effectiveness for advanced osteosarcoma and soft tissue sarcoma has plateaued.
- Understanding molecular mechanisms of deregulated apoptosis is crucial for treating advanced sarcomas.
- Lifeguard (LFG), a Bax Inhibitor-1 family protein, inhibits Fas-mediated apoptosis, but its role in sarcoma is unclear.
Purpose of the Study:
- To investigate the expression and function of LFG in various sarcoma subtypes.
- To analyze LFG expression in relation to tumor stage and pathological grade.
- To explore the potential of LFG as a therapeutic target in sarcoma.
Main Methods:
- Analyzed LFG protein expression in 50 osteosarcoma, 28 chondrosarcoma, and 55 soft tissue sarcoma samples.
- Compared LFG expression in tumor tissues versus corresponding healthy tissues.
- Determined clinical TNM-classification and pathological grading for each sarcoma subtype.
Main Results:
- Significantly higher LFG expression was observed in osteosarcoma, chondrosarcoma, and several soft tissue sarcoma subtypes compared to healthy tissues.
- A positive correlation between LFG expression and tumor stage was found in osteosarcoma and chondrosarcoma.
- LFG exhibits anti-apoptotic effects, potentially inhibiting Fas-mediated apoptosis.
Conclusions:
- LFG protein plays a significant role in inhibiting apoptosis in osteosarcoma.
- Elevated LFG expression is linked to advanced tumor stages in osteosarcoma and chondrosarcoma.
- LFG represents a potential therapeutic target for osteosarcoma treatment.
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