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High energy shock waves suppress tumor growth in vitro and in vivo
Abstract:
Exposure of the Dunning R3327AT-3 rat prostatic carcinoma and SK-Mel-28 human melanoma, in vitro, to high energy shock waves resulted in a reduction in cell viability as determined by trypan blue exclusion and a decrease in the number of colonies formed in a clonogenic assay. Flow cytometric determination of DNA content in R3327AT-3 cells treated in vitro indicated a selective diminution of cells in the G2 and M phases of the cell cycle. When R3327AT-3 cells exposed to high energy shock waves were subsequently injected into rats, or tumor bearing animals were treated by high energy shock waves targeted at the tumor, a delay in tumor growth was observed. These observations indicate that high energy shock waves are cytotoxic to tumor cells in vitro and in vivo. Additional research into the possible use of high energy shock waves in the non-invasive destruction of animal and human tumors is warranted.
Insights
High energy shock waves reduce tumor cell viability and slow tumor growth in preclinical models. Further research is warranted for using shock waves in non-invasive tumor destruction.
Area of Science:
- Oncology
- Biophysics
Background:
- Cancer remains a significant global health challenge.
- Developing novel, non-invasive therapeutic strategies is crucial.
Purpose of the Study:
- To investigate the cytotoxic effects of high energy shock waves on cancer cells.
- To evaluate the efficacy of high energy shock waves in inhibiting tumor growth in vivo.
Main Methods:
- In vitro exposure of Dunning R3327AT-3 rat prostatic carcinoma and SK-Mel-28 human melanoma cells to high energy shock waves.
- Cell viability assessed by trypan blue exclusion and clonogenic assays.
- Cell cycle analysis using flow cytometry.
- In vivo studies involving tumor cell injection and direct tumor treatment in rats.
Main Results:
- High energy shock waves significantly reduced cancer cell viability and colony formation in vitro.
- Shock wave treatment led to a decrease in G2 and M phase cells.
- Delayed tumor growth was observed in rats treated with shock waves, both systemically and locally.
Conclusions:
- High energy shock waves demonstrate significant cytotoxicity against tumor cells in vitro and in vivo.
- These findings support further investigation into high energy shock waves as a potential non-invasive cancer therapy.