中国组织工程研究

• 骨及关节损伤动物模型 Animal models of bone and joint injuries • 上一篇    下一篇

采用组织块移植法快速建立裸鼠原位骨肉瘤模型

周 斌   

  1. 兰州大学第二医院骨三科,甘肃省兰州市 730000
  • 收稿日期:2015-09-29 出版日期:2015-11-30 发布日期:2015-11-30
  • 作者简介:周斌,男,1972年生,甘肃省兰州市人,汉族, 2006年兰州大学毕业,硕士,副主任医师,主要从事脊柱相关疾病的防治研究。

Quick establishment of nude mouse models of orthotopic osteosarcoma using tissue mass transplantation  

Zhou Bin   

  1. Third Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou 730000, Gansu Province, China
  • Received:2015-09-29 Online:2015-11-30 Published:2015-11-30
  • About author:Zhou Bin, Master, Associate chief physician, Third Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou 730000, Gansu Province, China

摘要:

背景:骨肉瘤细胞起源于间叶组织这一特点使得骨肉瘤动物模型的构建存在较多困难,进展缓慢的问题。
目的:采用组织块移植法建立裸鼠原位骨肉瘤模型,并观察和评价其生物学特性。
方法:选用SPF 级 6 周龄裸鼠15只,将制备好的MG-63 骨肉瘤细胞悬液注射到裸鼠右前肢腋下,成瘤后连续传 3 代,待肿瘤生长稳定后将瘤块组织移植到裸鼠下肢胫骨髓腔内,评价其生物学特性,采用X射线观察裸鼠成瘤率和成瘤特点。并以正常裸鼠5只做对照。
结果与结论:15只裸鼠造模过程顺利,造模后通过观察1只成瘤失败,成瘤率为93%;造模后观察发现采用组织块移植法三四周可见裸鼠下肢局部肿瘤状组织形成,四五周后X射线观察可见裸鼠胫骨中上段出现不明显的溶骨以及瘤样骨形成;骨肉瘤模型组碱性磷酸酶的表达水平明显高于正常对照组(P < 0.01)。数据表明采用组织块移植法进行裸鼠原位骨肉瘤造模,其造模方法简单,成瘤率高,瘤体生长速度快,对骨皮质及周围软组织的破坏力较强,接近临床骨肉瘤患者的实际情况。 

 

关键词: 实验动物模型, 骨及关节损伤动物模型, 骨肉瘤, 裸鼠, 移植法, 原位模型

Abstract:

BACKGROUND: Construction of animal models of osteosarcoma is difficult, and the progress is slow because osteosarcoma cells are from mesenchymal tissue.
OBJECTIVE: To establish the nude mouse models of orthotopic osteosarcoma using tissue mass transplantation method, observe and evaluate its biological characteristics.
METHODS: Fifteen nude mice aged 6 weeks of SPF grade were selected. The right forelimb armpit of nude mice was injected with the prepared MG-63 osteosarcoma cell suspension. After tumorgenesis, osteosarcoma cells were sub-cultured for 3 generations. When the tumor grew stably, tumor tissue block was transplanted into lower tibial marrow cavity of nude mice and its biological characteristics were evaluated. Tumor-forming rate and tumor characteristics were observed by X-ray, and 5 normal nude mice were taken as controls.
RESULTS AND CONCLUSION: The modeling process in these 15 nude mice went smoothly. After modeling, only one nude mouse failed in tumor induction and the tumor-forming rate was 93%. Tumor-like tissue formation in the lower extremity of nude mice was visible at 3-4 weeks after tissue mass transplantation. After four or five weeks, X-ray observation showed that unobvious osteolytic bone tumor and tumor-like lesions were present in the upper and middle segments of the tibia of nude mice. The expression level of alkaline phosphatase in the osteosarcoma model group was significantly higher than in the control group (P < 0.01). These results show that tissue mass transplantation for modeling orthotopic osteosarcoma in nude mice is simple to operate and has a high tumor-forming rate. The induced tumors grow quickly and exhibit strong destructive power to cortical bone and surrounding soft tissue, which are close to the actual situation of patients with osteosarcoma in the clinic.
 

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