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Effect of muscle denervation on growth of transplanted tumor in mice
Abstract:
A temporary retardation of transplanted Round Cell Neuroblastoma growth in the gastrocnemius muscle of mice was observed in 20% of the animals after denervation of the muscle. The tumor cells in these denervated animals showed structural alterations and deterioration in function. These altered cells when mixed with associated denervated muscle tissue, to which was added fresh tumor, produced a higher percentage of retardation upon subsequent transplants in innervated muscle.
Insights
Denervation of mouse gastrocnemius muscle temporarily slowed neuroblastoma growth and altered tumor cells. These modified cells, when combined with denervated muscle tissue, further inhibited tumor growth in subsequent transplants.
Area of Science:
- Oncology
- Neuroscience
- Muscle Physiology
Background:
- Neuroblastoma is a pediatric cancer originating from nerve cells.
- Muscle denervation impacts cellular function and tissue environment.
- Tumor microenvironment interactions are crucial for cancer progression.
Purpose of the Study:
- To investigate the effect of muscle denervation on transplanted neuroblastoma growth in mice.
- To analyze structural and functional changes in neuroblastoma cells within a denervated muscle environment.
- To assess the potential of denervated muscle-altered tumor cells to influence subsequent tumor growth.
Main Methods:
- Transplantation of Round Cell Neuroblastoma cells into mouse gastrocnemius muscles.
- Surgical denervation of the gastrocnemius muscle in a subset of animals.
- Microscopic examination of tumor cell structure and function.
- Co-transplantation experiments involving altered tumor cells and denervated muscle tissue.
Main Results:
- Temporary growth retardation of neuroblastoma was observed in 20% of denervated muscle recipients.
- Neuroblastoma cells in denervated muscles exhibited structural alterations and functional deterioration.
- Mixing altered cells with denervated muscle tissue enhanced growth retardation in subsequent transplants into innervated muscle.
Conclusions:
- Muscle denervation can temporarily impede neuroblastoma growth and alter tumor cell characteristics.
- The altered tumor cells, influenced by the denervated muscle microenvironment, possess an enhanced capacity to inhibit tumor growth.
- These findings suggest a potential role for modulating the muscle microenvironment in cancer therapy.