PMID: 20658370Jul 27, 2010Paper

Efficacy of cryoablation combined with CpG oligonucleotides in the treatment of murine transplanted colon carcinoma

Zhonghua wei chang wai ke za zhi = Chinese journal of gastrointestinal surgery
Ning ZouJi-ren Zhang

Abstract

To investigate the efficacy of cryoablation combined with CpG ODN in the treatment of murine transplanted colon carcinoma. Colon carcinoma model was established by subcutaneously inoculating CT26 cells into the right flank in BALB/c mice. The tumor-bearing mice were randomly divided into 4 groups:the group of PBS injected in peritumoral area, the group of cryoablation, the group of cryoablation combined with CpG ODN, the group of CpG ODN injected in peritumoral area. The tumor size changes were measured. Serum levels of interleukin (IL)-12 and interferon-gamma(IFN-gamma) were assayed by ELISA. The rates of CD3(+)CD4(+)T, CD3(+)CD8(+)T lymphocytes in serum were counted with flow cytometry. Mice in the cryoablation group and the combined group with tumor regression were re-challenged with CT26 cells. The survival time of cryoablation group and combined therapy group were (80.3 + or - 5.4) days and (83.8 + or - 5.5) days, respectively, longer than (53.7 + or - 3.7) days in PBS group and (51.5 + or - 6.8) days in CpG ODN group(all P<0.05). The suppress rates of tumor cells in cryoablation group and combined therapy group were 83.8% and 86.2% respectively. After 20 days following treatment, CD3(+)CD4(+)T/CD3(+)CD8(+)T ratio and the ...Continue Reading

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