Related Experiment Videos
Gene therapy in pediatric oncology
1Department of Hematology/Oncology, St. Jude Children's Research Hospital, Memphis, TN 38105-2794, USA.
Abstract:
An increased understanding of the molecular mechanisms of cancer and the ability to introduce exogenous genes into mammalian cells has led to the development of oncologic treatment strategies based upon gene transfer. Preclinical animal models have suggested a variety of approaches which are now being tested in pediatric trials. Studies using marker genes to trace cell origin have already generated important information regarding autologous bone marrow transplantation for pediatric cancers. A variety of therapeutic genes are also being clinically tested. Trials are underway to determine if introduction of immunostimulatory genes into cancer cells can be used to enhance host antitumor immunity. Treatment of primary brain tumors with insertion of drug sensitization genes is a promising new therapy that is also being clinically evaluated. Other strategies such as insertion of drug resistance genes into hematopoietic cells, anti-oncogene therapy, and tumor suppressor gene replacement are being tested in adults and may find use in pediatric cancer treatment. Although gene transfer offers promising new approaches for the therapy of pediatric cancer, many technical problems remain which limit efficacy and widespread use. Further basic research in the molecular biology of cancer and in vector development will be required to realize the full potential of gene therapy strategies.
Insights
Gene transfer offers new pediatric cancer treatments by modifying genes. While promising, technical challenges remain, requiring further research for effective gene therapy in children.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Advances in understanding cancer molecular mechanisms and gene transfer into mammalian cells have spurred the development of gene therapy for cancer.
- Preclinical models have informed the design of gene transfer strategies now being evaluated in pediatric clinical trials.
Purpose of the Study:
- To review current gene transfer strategies for pediatric cancer treatment.
- To highlight the potential and challenges of gene therapy in pediatric oncology.
Main Methods:
- Utilizing marker genes to track cell origins in autologous bone marrow transplantation for pediatric cancers.
- Clinical testing of therapeutic genes, including immunostimulatory genes for enhanced antitumor immunity and drug sensitization genes for brain tumors.
- Evaluating strategies like drug resistance gene insertion, anti-oncogene therapy, and tumor suppressor gene replacement.
Main Results:
- Marker gene studies have yielded crucial information on bone marrow transplantation efficacy.
- Clinical trials are actively investigating the potential of various therapeutic genes, including those aimed at boosting immune response and sensitizing tumors to drugs.
- Promising strategies for adult cancers are being explored for pediatric applications.
Conclusions:
- Gene transfer presents a promising frontier for pediatric cancer therapy, with ongoing clinical evaluations of diverse strategies.
- Significant technical hurdles must be overcome to enhance the efficacy and accessibility of gene therapy for childhood cancers.
- Continued basic research in cancer biology and vector development is essential to fully realize the potential of gene therapy.