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中华细胞与干细胞杂志(电子版) ›› 2018, Vol. 08 ›› Issue (03) : 140 -145. doi: 10.3877/cma.j.issn.2095-1221.2018.03.003

所属专题: 文献

论著

IL-12重组质粒联合骨髓间充质干细胞对MCF-7人乳腺癌细胞侵袭及裸鼠移植瘤生长的影响分析
张睿1, 崔乐2,()   
  1. 1. 438200 黄冈,浠水县人民医院甲乳外科
    2. 430000 武汉,华中科技大学同济医学院附属普爱医院甲乳外科
  • 收稿日期:2017-11-24 出版日期:2018-06-01
  • 通信作者: 崔乐

Effect of IL-12 recombinant plasmid combined with bone marrow mesenchymal stem cells on the invasion of MCF-7 human breast cancer cells and the growth of nude mice xenografts

Rui Zhang1, Le Cui2,()   

  1. 1. Department of Breast Surgery, Yishui People's Hospital, Huanggang 438200, China
    2. Department of Breast Surgery, Puai Hospital Affiliated with Tongji Medical College of Huazhong University of Science and Technology, Wuhan 430000, China
  • Received:2017-11-24 Published:2018-06-01
  • Corresponding author: Le Cui
  • About author:
    Corresponding author:Cui Le, Email:
引用本文:

张睿, 崔乐. IL-12重组质粒联合骨髓间充质干细胞对MCF-7人乳腺癌细胞侵袭及裸鼠移植瘤生长的影响分析[J]. 中华细胞与干细胞杂志(电子版), 2018, 08(03): 140-145.

Rui Zhang, Le Cui. Effect of IL-12 recombinant plasmid combined with bone marrow mesenchymal stem cells on the invasion of MCF-7 human breast cancer cells and the growth of nude mice xenografts[J]. Chinese Journal of Cell and Stem Cell(Electronic Edition), 2018, 08(03): 140-145.

目的

探讨IL-12重组质粒联合骨髓间充质干细胞(BMSC)对MCF-7人乳腺癌细胞侵袭及裸鼠移植瘤生长的影响。

方法

分离纯化培养BMSC原代细胞,制备BMSC条件培养基,分析BMSC条件培养基对MCF-7细胞株体外增殖和凋亡的影响;建立裸鼠MCF-7转移瘤模型,分为对照组、BMSC组、IL-12组以及联合组,各组每3 d进行一次瘤内注射,共注射3次,15 d后处死裸鼠,比较各组裸鼠肿瘤、脾脏重量。采用χ2检验、t检验以及方差分析进行统计学分析。

结果

BMSC条件培养基能够抑制MCF-7细胞增殖,且随着作用时间的延长其抑制作用升高[24 h(13.42±1.93)%,48 h(16.83±1.77)%,72 h(20.21±2.01),F = 6.271,P = 0.000]。BMSC条件培养基处理MCF-7细胞,可有效促进MCF-7细胞凋亡,且随着作用时间的延长细胞凋亡率升高[24 h(10.82±2.18)%,48 h(18.73±2.95)%,72 h(28.15±3.52)%,F = 9.215,P = 0.000]。与对照组裸鼠肿瘤体积[1 d(124.12±9.28)mm3,3 d(582.41±17.28) mm3,7 d(983.42±42.10) mm3,15 d(793.46±109.38) mm3]比较,BMSC组[1 d(132.61±12.41) mm3,3 d(378.46±23.08) mm3,7 d(542.61±58.49)mm3,15 d(329.48±47.51) mm3]、IL-12组[1 d(119.85±13.10) mm3,3 d(322.75±26.49) mm3,7 d(518.37±67.54)mm3,15 d(302.17±68.53) mm3]以及联合组[1 d(123.41±8.94)mm3,3 d(217.85±24.03)mm3,7 d(318.29±47.32) mm3,15 d(189.27±37.58)mm3]裸鼠肿瘤体积生长速度均减慢,差异具有统计学意义(F1d=0.827,F3d=37.583、F7d=31.472、F15d=15.372,P < 0.001);处死各组裸鼠后裸鼠肿瘤质量比较,BMSC组[(529.42±98.74) mg]、IL-12组[(544.01±117.85)mg]以及联合组[(327.55±78.56) mg]均低于对照组[(877.42±120.11)mg],且联合组裸鼠肿瘤质量最低,差异具有统计学意义(F = 10.821,P < 0.001);而裸鼠脾指数BMSC组(7.58±1.21)、IL-12组(7.63±1.09)以及联合组(10.03±1.52)均高于对照组(5.37±0.89),联合组裸鼠脾质量最高,差异具有统计学意义(F = 13.411,P < 0.001)。

结论

BMSC在体内外均具有抑制MCF-7肿瘤增殖作用,联合使用pcDNA6/IL-12对裸鼠MCF-7转移瘤抑制具有着明显的协同作用。

Objective

To investigate the effect of IL-12 recombinant plasmid combined with bone marrow mesenchymal stem cells (BMSC) on the invasion of MCF-7 breast cancer cells and the growth of transplanted tumor in nude mice.

Methods

BMSC cells were isolated, purified and cultured, and BMSC conditioned medium was prepared. The effects of BMSC conditioned medium on proliferation and apoptosis of MCF-7 cell lines were analyzed; The model of MCF-7 metastatic tumor in nude mice was established and divided into a control group, BMSC group, IL-12 group and a combined group. Intratumoral was injected every 3 d, for 3 times in each group. The nude mice were killed after 15 d, and the tumor and spleen weight of nude mice were compared, χ2 test, t test and variance analysis were used for statistical analysis.

Results

BMSC conditioned medium inhibited the proliferation of MCF-7 cells, and the inhibition effect was increased [24 h (13.42±1.93)%, 48 h (16.83±1.77)%, 72 h (20.21±2.01)%, F = 6.271, P = 0.000] with the prolongation of action time. The treatment of MCF-7 cells by BMSC conditioned medium promoted apoptosis of MCF- 7 cells effectively, and with the prolongation of action time, the apoptosis rate was increased by [24 h (10.82±2.18)%, 48 h (18.73±2.95)%,72 h (28.15±3.52)%, F = 9.215, P = 0.000]. The tumor volume of the nude mice was compared in the control group [1 d (124.12±9.28) mm3, 3 d (582.41±17.28) mm3, 7 d (983.42±42.10) mm3, 15 d (793.46±109.38) mm3], BMSC group [1 d (132.61±12.41) mm3, 3 d (378.46±23.08) mm3, 7 d (542.61±58.49) mm3, 15 d (329.48±47.51) mm3], IL-12 group [1 d (119.85±13.10) mm3, 3 d (322.75±26.49) mm3, 7 d (518.37±67.54) mm3, 15 d (302.17±68.53) mm3], and the combined group [1 d (123.41±8.94) mm3, 3 d (217.85±24.03) mm3, 7 d (318.29±47.32) mm3, 15 d (189.27±37.58) mm3], the difference was statistically significant (F = 10.821, P < 0.001). The spleen index in BMSC group (7.58 ±1.21), IL-12 group (7.63 ± 1.09) and the combined group (10.03 ± 1.52) were significantly higher than those of the control group (5.37 ± 0.89), and the spleen mass of the nude mice was the highest(F = 13.411, P = 0.000).

Conclusion

BMSC has a significant inhibitory effect on MCF-7 tumor proliferation in vivo and in vitro. Combined use of pcDNA6/IL-12 has a significant synergistic effect on the inhibition of MCF-7 metastasis in nude mice.

图1 BMSC条件培养基不同时间处理MCF-7细胞凋亡率
图2 倒置相差显微镜下观察细胞划痕实验(×200)
表1 不同时间内各组裸鼠肿瘤体积变化 (mm3±s
表2 各组裸鼠肿瘤质量及脾指数比较(±s
图3 正常视野下的三组裸鼠肿瘤
图4 正常视野下的三组裸鼠脾脏
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