Bone metastasis of lung cancer in a mouse model with normal immune function
10.3969/j.issn.1673-4254.2014.05.14
- VernacularTitle:肺癌骨转移小鼠模型的建立
- Author:
Yue MENG
1
;
Chunyu LI
;
Song HAO
;
Shaoyu HU
;
Zhen LIN
;
Liang YUAN
;
Wei LI
;
Wenjuan YAN
;
Jianting CHEN
;
Dehong YANG
Author Information
1. 南方医科大学南方医院脊柱骨科
- Keywords:
lung cancer;
bone metastases;
animal model/mice
- From:
Journal of Southern Medical University
2014;(5):664-668
- CountryChina
- Language:Chinese
-
Abstract:
Objective To establish a model bearing human lung cancer xenograft with bone metastasis in mice with normal immune function. Methods Forty female C57BL/6J mice were randomly allocated into 4 equal groups, including a control group and 3 immunosuppression groups treated with low, moderate, and high doses of dexamethasone (50, 100, and 150 mg, respectively). Four days after immune suppression, the mice were subjected to percutaneous injection of1.0 × 109 L-1 A549 cells into the tibial plateau, and the bone defects were assessed radiographically 28 days after modeling. HE staining and immunohistochemical staining were used to examine the tumor tissues and bone tissue damages. Results In each of the 4 groups one mouse died during tumor cell injection. Only 1 mouse showed tumor formation in low-dose immunosuppression group, as compared to 7 and 4 in moderate- and high-dose immunosuppression groups. X-ray and microCT scan showed significant tibial bone destruction in moderate- and high-dose groups. The moderate- and high-dose groups showed similar ALP activities but both were significantly higher than those in the other two groups (P<0.05). Conclusion Immunosuppression with a moderate dose of dexamethasone results in longer survival time of the human lung cancer xenograft-bearing model mice as well as a higher tumor formation rate.
