title: Effect of interleukin-2 treatment combined with magnetic fluid hyperthermia on Lewis lung cancer-bearing mice.
abstract: The present study aimed to investigate the therapeutic effect of interleukin-2 (IL-2) treatment combined with magnetic fluid hyperthermia (MFH) on Lewis lung cancer-bearing mice. Magnetic fluids were preparedin vitroand directly injected into the tumors in the mice, which were subjected to an alternating magnetic field. The temperature in the tumor reached 43°C and was maintained by controlling the strength of magnetic field for 30 min. Twenty-four hours later, IL-2 was injected directly into the tumors. Mice were divided into four groups: Group I (control), II (MFH), III (IL-2) and IV (IL-2+MFH). The tumor grew gradually in groups II and IV (both P<0.05) compared to the control group. Histological analysis showed that the tumor cells underwent apoptosis and necrosis. Immunohistochemistry results demonstrated that heat-shock protein 70 and cluster of differentiation (CD) 8-positive and CD4-positive T cells were strongly expressed following hypothermia. Therefore, the present study provided evidence that IL-2 treatment combined with MFH improves the therapeutic effect on lung cancer-bearing mice.
authors: Department of Thoracic Surgery, Hangzhou First People's Hospital, Nanjing Medical University, Hangzhou, Zhejiang 310006, P.R. China.
authors: Runlei
authors: R
authors: Hu
authors: Department of Radiation Oncology, Hangzhou First People's Hospital, Nanjing Medical University, Hangzhou, Zhejiang 310006, P.R. China.
authors: Shenglin
authors: S
authors: Ma
authors: Laboratory Animal Center, Zhejiang Academy of Medical Sciences, Hangzhou, Zhejiang 310006, P.R. China.
authors: Xianfu
authors: X
authors: Ke
authors: Department of Thoracic Surgery, Hangzhou First People's Hospital, Nanjing Medical University, Hangzhou, Zhejiang 310006, P.R. China.
authors: Hong
authors: H
authors: Jiang
authors: Department of Thoracic Surgery, Hangzhou First People's Hospital, Nanjing Medical University, Hangzhou, Zhejiang 310006, P.R. China.
authors: Dongshan
authors: D
authors: Wei
authors: Department of Thoracic Surgery, Hangzhou First People's Hospital, Nanjing Medical University, Hangzhou, Zhejiang 310006, P.R. China.
authors: Wei
authors: W
authors: Wang
keywords: hyperthermia; interleukin-2; lung cancer; magnetic fluid