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23 June 2019 : Animal Research  

Effect of Dexmedetomidine-Mediated Insulin-Like Growth Factor 2 (IGF2) Signal Pathway on Immune Function and Invasion and Migration of Cancer Cells in Rats with Ovarian Cancer

Hang Tian1A, Lei Hou2B*, Yumei Xiong3C, Qiuju Cheng1F, Junking Huang1C

DOI: 10.12659/MSM.915503

Med Sci Monit 2019; 25:4655-4664

Abstract

BACKGROUND: The aim of this study was to explore the effect of dexmedetomidine (DEX)-mediated insulin-like growth factor 2 (IGF2) signal pathway on immune function and cancer cell invasion and migration in rats with ovarian cancer.

MATERIAL AND METHODS: Forty rats with ovarian cancer were divided into 4 groups: model group, and low dose (0.2 μg/kg/hour DEX), medium dose (1.0 μg/kg/hour DEX), and high dose (5.0 μg/kg/hour DEX) DEX groups. In addition, 10 Fischer344 rats were selected as a normal group. Human NUTU-19 poorly differentiated epithelial ovarian cancer cell line cells were divided into 4 groups: a blank group and low dose, medium dose, and high dose DEX NUTU-19 groups.

RESULTS: Compared with the normal group, in the other groups the serum interleukin (IL)-2 and interferon gamma (INF-γ) levels, CD4⁺ and CD8⁺ percentages, CD4⁺/CD8⁺ ratio, and transformation rate of splenic lymphocytes were decreased, and the serum tumor necrosis factor alpha (TNF-α) level, IGF2, insulin-like growth factor 1 receptor (IGF1R), insulin receptor substrate 1 (IRS1) mRNA, and protein expressions in ovarian tissue were increased (all P<0.05). Results in the DEX groups compared with model group were the opposite of those in the other groups compared with normal group (all P<0.05). Compared with the blank group, in the other groups the proliferation, invasion, and migration of ovarian cancer cells were reduced significantly (all P<0.05). Compared with the low dose DEX NUTU-19 group, in the high dose DEX NUTU-19 group the invasion and migration of ovarian cancer cells weakened significantly (both P<0.05).

CONCLUSIONS: A certain dose of DEX can effectively inhibit IGF2 signal pathway activation to improve the immune function of rats with ovarian cancer, inhibiting the invasion and migration of ovarian cancer cells.

Keywords: Dexmedetomidine, Ovarian Neoplasms, Insulin-Like Growth Factor II, Interleukin-2, Rats, Inbred F344

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750