中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (32): 4738-4744.doi: 10.3969/j.issn.2095-4344.2016.32.004

• 肿瘤干细胞 cancer stem cells • 上一篇    下一篇

胃癌干细胞在肿瘤侵袭转移及对血管形成的影响

张丽贤1,张  宁2,袁双珍1,陈玉梅1,苏新爱1,孙建顺1,王丽华1,林  美3   

  1. 1衡水市哈励逊国际和平医院消化内科,河北省衡水市  053000
    2衡水市第四人民医院骨科,河北省衡水市  053000
    3河北医科大学附属第一医院消化内科,河北省石家庄市 066004
  • 修回日期:2016-06-12 出版日期:2016-08-05 发布日期:2016-08-05
  • 通讯作者: 林美,硕士,副主任医师,河北医科大学附属第一医院消化内科,河北省石家庄市 066004
  • 作者简介:张丽贤,1980年生,女,河北省石家庄市人,硕士。
  • 基金资助:

    衡水市科技局立项2012年衡水市科学技术研究与发展计划项目(12012A)

Gastric cancer stem cells in tumor invasion and metastasis and its influence on angiogenesis ability

Zhang Li-xian1, Zhang Ning2, Yuan Shuang-zhen1, Chen Yu-mei1, Su Xin-ai1, Sun Jian-shun1, Wang Li-hua1, Lin Mei3   

  1. 1Department of Gastroenterology, Harrison International Peace Hospital, Hengshui 053000, Hebei Province, China
    2Department of Orthopedics, Fourth People’s Hospital of Hengshui, Hengshui 053000, Hebei Province, China
    3Department of Gastroenterology, First Affiliated Hospital of Hebei Medical University, Shijiazhuang 066004, Hebei Province, China
  • Revised:2016-06-12 Online:2016-08-05 Published:2016-08-05
  • Contact: Lin Mei, Master, Associate chief physician, Department of Gastroenterology, First Affiliated Hospital of Hebei Medical University, Shijiazhuang 066004, Hebei Province, China
  • About author:Zhang Li-xian, Master, Department of Gastroenterology, Harrison International Peace Hospital, Hengshui 053000, Hebei Province, China
  • Supported by:

    the Scientific Research and Development Plan Project of Hengshui City, China, in 2012, No. 12012A

摘要:

文章快速阅读:

文题释义:
胃癌干细胞:
胃癌的发生与干细胞的突变有关。基因突变可使胃干细胞转变成胃癌干细胞,进而发展成胃癌。胃干细胞可能是基因突变和积累的重要细胞,可能在胃癌发生的早期阶段发挥重要作用。
胃癌干细胞在肿瘤形成及转移中的意义:炎症环境可为肿瘤干细胞和基质细胞提供持续的生长信号,不同程度上影响肿瘤的形成,并在肿瘤转移的整个过程中发挥重要作用。炎症环境促进基质细胞分泌生长因子、趋化因子和基质改变因子,参与血管形成及组织纤维化,成为肿瘤转移环境中的关键因素,可诱导肿瘤细胞向周围器官的远处转移。

 

摘要
背景:
胃癌干细胞在新辅助化疗、常规治疗中发挥重要作用,与患者治疗后复发关系密切,但是该结论尚未得到证实。
目的:观察胃癌干细胞在肿瘤侵袭转移中的作用及对血管形成能力的影响。
方法:建立胃癌模型裸鼠,分离培养胃癌干细胞。将采集的胃癌干细胞分别进行细胞划痕实验、成环实验、细胞抑制率实验、细胞转移性实验及成瘤实验。
结果与结论:①细胞形态:胃癌干细胞培养7 d后贴壁生长,贴壁细胞缺乏规律性,多为蝌蚪形;②划痕实验:划痕后0,24 h细胞划痕宽度差异有显著性意义(P < 0.05);③成环实验:倒置显微镜观察显示,胃癌干细胞能形成环状;④细胞抑制率实验:奥沙利铂干预胃癌干细胞的半抑制浓度显著低于5-氟尿嘧啶(P < 0.05);⑤胃癌肿瘤干细胞转移性实验:胃癌干细胞穿过基底膜细胞数显著高于细胞转移前(P < 0.05);⑥成瘤实验:胃癌干细胞植入后胃癌组织质量显著重于普通胃癌裸鼠(P < 0.05)。结果说明:胃癌干细胞在肿瘤侵袭、转移中发挥重要的作用,具备较强的血管形成能力。

 

 

关键词: 干细胞, 肿瘤干细胞, 胃癌干细胞, 侵袭转移, 血管形成, 划痕实验, 成环实验, 细胞抑制率实验, 细胞抑制率实验, 细胞活性, 耐药机制

Abstract:

BACKGROUND: Gastric cancer stem cells involved in the neoadjuvant chemotherapy and conventional treatment are closely associated with relapse of gastric cancer. However, this conclusion has not yet been confirmed.
OBJECTIVE: To investigate the effects of gastric cancer stem cells in tumor invasion and metastasis and its effect on angiogenesis ability.
METHODS: We prepared nude mouse models of gastric cancer to isolate and culture gastric cancer stem cells. Harvested gastric cancer stem cells were detected in cell scratch test, ring test, inhibition rate test, cell migration test and tumorigenicity test.
RESULTS AND CONCLUSION: After 7 days of culture, the cells exhibited adherent growth but a lack of regularity that most cells were in a tadpole shape. In the cell scratch test, the scratch width was significantly different at 0 and 24 hours (P < 0.05). Under an inverted microscope, the cells were found to form a ring in the ring test. The 50% inhibiting concentration of gastric cancer stem cells induced by oxaliplatin was significantly lower than that induced by 5-fluorouracil (P < 0.05). The number of cells passing through the basilar membrane was significantly increased after cell migration (P < 0.05). After implantation of gastric cancer stem cells, the gastric tissue quality was significantly higher than that in normal nude mice of gastric cancer (P < 0.05). These findings indicate that gastric cancer stem cells responsible for tumor invasion and migration have stronger angiogenesis ability.

 

 

Key words: Stem Cells, Tissue Engineering, Stomach Neoplasms

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