In Vitro Assessment of the Efficacy of Thermal Therapy in Human Renal Cell Carcinoma

Lance P. Walsh, J. Kyle Anderson, Meredith R. Baker, Bumsoo Han, Jer-Tsong Hsieh, Yair Lotan, Jeffrey A Cadeddu

Research output: Contribution to journalArticle

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Abstract

Objectives: To define the temperature-time points that result in cell death in a human renal cell carcinoma cell (RCC) line in vitro. Methods: Cellular viability and clonogenic cell survival were determined for human A498 RCC cells after thermal treatment. Various temperature (45°C to 70°C) and time (1 to 30 minutes) combinations were used. Cell viability was assessed by vital dye uptake and clonogenic cell survival. Mathematical Arrhenius modeling was performed to construct a graphic display of A498 cell thermal sensitivity. Results: Temperature-time points at which 99% or greater cell death occurred according to the vital dye assay were 55°C for 30 minutes, 60°C for 10 minutes, and 65°C for 8 minutes. Clonogenic survival studies confirmed that cells treated at these temperature-time points failed to grow even after 10 days. Conclusions: These in vitro results show that short exposure to temperatures higher than 70°C is lethal in the A498 RCC cell line. Lower temperatures in the 60°C range require more prolonged heating to cause cell death. Knowledge of these temperatures will be useful to better plan and monitor complex radiofrequency ablations.

Original languageEnglish (US)
Pages (from-to)380-384
Number of pages5
JournalUrology
Volume70
Issue number2
DOIs
StatePublished - Aug 2007

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Renal Cell Carcinoma
Hot Temperature
Temperature
Cell Survival
Cell Death
Therapeutics
Coloring Agents
Cell Line
In Vitro Techniques
Heating
Cause of Death
Survival

ASJC Scopus subject areas

  • Urology

Cite this

In Vitro Assessment of the Efficacy of Thermal Therapy in Human Renal Cell Carcinoma. / Walsh, Lance P.; Anderson, J. Kyle; Baker, Meredith R.; Han, Bumsoo; Hsieh, Jer-Tsong; Lotan, Yair; Cadeddu, Jeffrey A.

In: Urology, Vol. 70, No. 2, 08.2007, p. 380-384.

Research output: Contribution to journalArticle

Walsh, Lance P. ; Anderson, J. Kyle ; Baker, Meredith R. ; Han, Bumsoo ; Hsieh, Jer-Tsong ; Lotan, Yair ; Cadeddu, Jeffrey A. / In Vitro Assessment of the Efficacy of Thermal Therapy in Human Renal Cell Carcinoma. In: Urology. 2007 ; Vol. 70, No. 2. pp. 380-384.
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