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Genetic surgery - a right strategy to attack cancer
1Institute of Molecular Genetics, Shemyakin-Ovchinnikov, Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia. edsverd@gmail.com
Abstract:
The approaches now united under the term "gene therapy" can be divided into two broad strategies: (1) strategy using the ideology of molecular targeted therapy, but with genes in the role of agents targeted at certain molecular component(s) or pathways presumably crucial for cancer maintenance; (ii) strategy aimed at the destruction of tumors as a whole exploiting the features shared by all cancers, for example relatively fast mitotic cell division. While the first strategy is "true" gene therapy, the second one, as e.g. suicide gene therapy, is more like genetic surgery, when a surgeon just cuts off a tumor being not interested in subtle genetic mechanisms of cancer emergence and progression. This approach inherits the ideology of chemotherapy but escapes its severe toxic effects due to intracellular formation of toxic agents. Genetic surgery seems to be the most appropriate approach to combat cancer, and its simplicity is paradoxically adequate to the super-complexity of tumors. The review consists of three parts: (i) analysis of the reasons of tumor supercomplexity and fatally inevitable failure of molecular targeted therapy, (ii) general principles of the genetic surgery strategy, and (iii) examples of genetic surgery approaches with analysis of their drawbacks and the ways for their improvement.
Insights
Gene therapy offers two strategies: molecularly targeted therapy and genetic surgery. Genetic surgery, targeting shared cancer traits like rapid cell division, shows promise for effective cancer treatment with reduced toxicity.
Area of Science:
- Oncology
- Genetics
- Molecular Biology
Background:
- Gene therapy encompasses two main strategies: molecularly targeted therapy and a broader approach targeting shared cancer characteristics.
- Molecularly targeted therapy focuses on specific cancer pathways, while the second strategy, termed 'genetic surgery,' aims to destroy tumors holistically.
Purpose of the Study:
- To analyze the complexities of tumors and the limitations of molecular targeted therapy.
- To outline the general principles of the genetic surgery strategy for cancer treatment.
- To review existing genetic surgery approaches, their limitations, and potential improvements.
Main Methods:
- Comparative analysis of gene therapy strategies.
- Review of scientific literature on cancer biology and gene therapy.
- Evaluation of genetic surgery principles and examples.
Main Results:
- Tumor supercomplexity often leads to the failure of molecular targeted therapy.
- Genetic surgery, by exploiting universal cancer features like rapid cell division, offers a viable alternative.
- Suicide gene therapy exemplifies genetic surgery, inheriting chemotherapy's efficacy with reduced systemic toxicity.
Conclusions:
- Genetic surgery presents a promising and potentially simpler approach to combating complex tumors compared to molecular targeted therapy.
- This strategy leverages cancer's inherent features for targeted destruction, minimizing off-target effects.
- Further development of genetic surgery techniques is warranted to enhance efficacy and overcome current limitations.
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