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Updated: May 11, 2026

Three-Dimensional Bone Extracellular Matrix Model for Osteosarcoma
Published on: April 12, 2019
Novel pathways and molecular targets for the treatment of sarcoma
Ashley E Frith1, Angela C Hirbe, Brian A Van Tine
1Division of Medical Oncology, Department of Internal Medicine, Washington University in St. Louis School of Medicine, St. Louis, MO 63110, USA. afrith@dom.wustl.edu
Abstract:
Sarcomas collectively represent over 100 different subtypes of bone and soft tissue tumors of mesenchymal origin. The low response rate to cytotoxic chemotherapies has necessitated the need for development of either histologically driven or pathway-specific targeted therapies. As our understanding of the molecular mechanisms driving certain subtypes is rapidly advancing, the number of targeted therapies is also increasing. Recently identified novel druggable targets include the MDM2 amplifications in well-differentiated and dedifferentiated liposarcomas, the new translocation NAB2:STAT6 of solitary fibrous tumors, the angiopoeitin-TIE2 pathway in angiosarcoma, the suppression of Mcl1 in X:18/synovial sarcomas, the mTOR pathway in malignant peripheral nerve sheath tumors, CDK4 in alveolar rhabdomyosarcoma, cMET regulation in alveolar soft parts sarcoma, the metabolic abnormalities in wild-type/SHD GIST, and the lack of argininosuccinate synthetase 1 expression seen in most sarcomas. It is through a fundamental understanding of sarcoma biology that clinical trials based on molecular targets can be developed.
Insights
Targeted therapies are emerging for various sarcoma subtypes, addressing the limitations of traditional chemotherapy. Advances in understanding sarcoma biology are paving the way for new molecularly targeted treatments.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Sarcomas are a diverse group of over 100 mesenchymal tumors.
- Conventional chemotherapy shows limited efficacy for many sarcoma subtypes.
- There is a critical need for novel, targeted therapeutic strategies.
Purpose of the Study:
- To review recent advancements in identifying novel druggable molecular targets in various sarcoma subtypes.
- To highlight the importance of understanding sarcoma biology for developing targeted therapies.
- To discuss the potential of molecularly targeted treatments in clinical trials.
Main Methods:
- Review of current scientific literature on sarcoma molecular mechanisms.
- Identification of recently discovered molecular targets and associated sarcoma subtypes.
- Analysis of emerging targeted therapy approaches.
Main Results:
- Novel druggable targets identified include MDM2 amplifications (liposarcoma), NAB2:STAT6 translocation (solitary fibrous tumors), angiopoeitin-TIE2 pathway (angiosarcoma), Mcl1 suppression (synovial sarcoma), mTOR pathway (MPNST), CDK4 (alveolar rhabdomyosarcoma), cMET (ASPS), metabolic abnormalities (GIST), and argininosuccinate synthetase 1 deficiency.
- These targets represent diverse molecular pathways driving sarcoma development.
- The growing list of targets facilitates the development of pathway-specific therapies.
Conclusions:
- Understanding sarcoma biology is crucial for developing effective molecularly targeted therapies.
- Targeted therapies offer a promising alternative to conventional chemotherapy for specific sarcoma subtypes.
- Further research and clinical trials are essential to translate these molecular discoveries into patient benefit.
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