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Cytotoxic Efficacy of Photodynamic Therapy in Osteosarcoma Cells In Vitro
Published on: March 18, 2014
Genetically Modified T-Cell Therapy for Osteosarcoma: Into the Roaring 2020s
Christopher DeRenzo1, Stephen Gottschalk2
1Department of Bone Marrow Transplantation and Cellular Therapy, St. Jude Children's Research Hospital, Memphis, TN, USA. Chris.DeRenzo@stjude.org.
Abstract:
T-cell immunotherapy may offer an approach to improve outcomes for patients with osteosarcoma who fail current therapies. In addition, it has the potential to reduce treatment-related complications for all patients. Generating tumor-specific T cells with conventional antigen-presenting cells ex vivo is time-consuming and often results in T-cell products with a low frequency of tumor-specific T cells. Furthermore, the generated T cells remain sensitive to the immunosuppressive tumor microenvironment. Genetic modification of T cells is one strategy to overcome these limitations. For example, T cells can be genetically modified to render them antigen specific, resistant to inhibitory factors, or increase their ability to home to tumor sites. Most genetic modification strategies have only been evaluated in preclinical models; however, early clinical phase trials are in progress. In this chapter, we will review the current status of gene-modified T-cell therapy with special focus on osteosarcoma, highlighting potential antigenic targets, preclinical and clinical studies, and strategies to improve current T-cell therapy approaches.
Insights
Gene-modified T-cell therapy shows promise for osteosarcoma patients resistant to conventional treatments. This approach aims to enhance T-cell effectiveness against tumors and reduce treatment side effects.
Area of Science:
- Immunology
- Oncology
- Biotechnology
Background:
- Osteosarcoma patients often have poor outcomes with current therapies.
- Existing T-cell immunotherapy methods face challenges like low tumor-specific T-cell yield and immunosuppressive tumor microenvironments.
Purpose of the Study:
- To review the current state of gene-modified T-cell therapy for osteosarcoma.
- To highlight potential targets, preclinical and clinical studies, and improvement strategies for T-cell therapy.
Main Methods:
- Review of existing literature on gene-modified T-cell therapy.
- Focus on strategies to enhance T-cell specificity, resistance to immunosuppression, and tumor homing.
- Examination of preclinical models and early clinical trials.
Main Results:
- Genetic modification offers a strategy to overcome limitations of conventional T-cell therapies.
- Engineered T cells can be made antigen-specific, resistant to inhibitory factors, and better at homing to tumors.
- Early clinical trials are underway, with most strategies still in preclinical evaluation.
Conclusions:
- Gene-modified T-cell therapy presents a promising avenue for osteosarcoma treatment.
- Further research and clinical trials are needed to optimize these approaches.
- This therapy has the potential to improve patient outcomes and reduce treatment complications.
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