Chinese Journal of Tissue Engineering Research ›› 2016, Vol. 20 ›› Issue (19): 2783-2788.doi: 10.3969/j.issn.2095-4344.2016.19.007

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Mechanism of bone marrow mesenchymal stem cells in promoting lung cancer metastasis

Zheng Tian-liang1, Zhao Song1, Guo Hai-zhou1, Cui Guang-hui1, Lin Da-wei2   

  1. 1First Department of Thoracic Surgery, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan Province, China
    2Medical School of Zhengzhou University, Zhengzhou 450001, Henan Province, China
  • Received:2016-03-21 Online:2016-05-06 Published:2016-05-06
  • About author:Zheng Tian-liang, M.D., Attending physician, First Department of Thoracic Surgery, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 82541044

Abstract:

BACKGROUND: So far the positive or negative effects of mesenchymal stem cells on tumor growth and metastasis are under discussion.
OBJECTIVE: To explore the mechanism of bone marrow mesenchymal cells in promoting lung cancer metastasis.
METHODS: Primary rat bone marrow mesenchymal stem cells were obtained by direct adherence method of the whole bone marrow, and differential adherence combined with digestion control method was performed to purify cells. Lung cancer cell lines were cultured, and the effects of bone marrow mesenchymal stem cells on the migration, invasion and metastasis of lung cancer cells were observed by scratch test, cell invasion and migration assays. Orthotopic lung cancer models were established in rats and bone marrow mesenchymal stem cells were seeded onto the left lung of rats. Then, pathological changes of lung tissues were observed at 14 days after transplannation.
RESULTS AND CONCLUSION: After the scratch test, the migration rate of lung cancer cells became higher, and the scratches healed with time. And after cell transplantation, the number of migrated lung cancer cells increased, as well as the ability of lung cancer cells penetrating the Matrigel was strengthened. Besides, fibrous connective tissues could be found around the lung cancer tissues, and necrosis with distinct boundary and large tumor nuclei; the metastatic tissues showed obvious infiltration and necrosis with large tumor nuclei. These results suggest that bone marrow mesenchymal stem cells can promote the invasion, migration and metastasis of lung cancer cell lines.

 

Key words: Bone Marrow, Mesenchymal Stem Cells, Lung Neoplasms, Cell Line, Tumor, Neoplasm Metastasis, Tissue Engineering

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