Chinese Journal of Tissue Engineering Research ›› 2017, Vol. 21 ›› Issue (9): 1402-1407.doi: 10.3969/j.issn.2095-4344.2017.09.017

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Immunological impact of autologous peripheral blood stem cell infusion on lung adenocarcinoma

Wang Mei-jiang, Qi Lin   

  1. First People’s Hospital of Zunyi, Third Affiliated Hospital of Zunyi Medical University, Zunyi 563000, Guizhou Province, China
  • Online:2017-03-28 Published:2017-03-31
  • About author:Wang Mei-jiang, Attending physician, First People’s Hospital of Zunyi, Third Affiliated Hospital of Zunyi Medical University, Zunyi 563000, Guizhou Province, China
  • Supported by:

    the Scientific Development Plan of Guizhou Provincial Health Department, No. 201503321

Abstract:

BACKGROUND: Although clinical methods for autologous peripheral blood stem cell separation and identification are relatively more, there is no unified standard. Moreover, little is reported on immune effects on lung adenocarcinoma during autologous peripheral blood stem cell transplantation.
OBJECTIVE: To study the effect of autologous peripheral blood stem cell transplantation on immunological function of lung adenocarcinoma rats by exploring the separation and identification methods of autologous peripheral blood stem cells.
METHODS: The mononuclear cells were isolated from the peripheral blood of Wistar rats by density gradient centrifugation method and then identified. Eighteen Wistar rats were randomly divided into routine treatment group and cell transplantation group, with nine rats in each group. Animal models of lung adenocarcinoma were established in the rats, and underwent no treatment in the routine treatment group but injection of autologous peripheral blood stem cell suspension (0.2 mL, 2.5×106/L) via the tail vein in the cell transplantation group. Immune indicators were detected in two groups after treatment. Three rats from each group were anesthetized and scarified at 4, 10, 14 days after treatment, respectively. Afterwards, we detected the effects of autologous peripheral blood stem cell transplantation on immunological function of lung adenocarcinoma rats.
RESULTS AND CONCLUSION: Newly isolated mononuclear cells from rat peripheral blood showed a round or oval shape and were relatively small in size. After 5 days of culture, autologous peripheral blood stem cells grew rapidly, and the round cells began to spread to both ends and became spindle-shaped, thereby forming small colonies. Autologous peripheral blood stem cells induced in vitro experienced three stages successively: cell arrest, logarithmic and plateau phases. Flow cytometry showed that sorted cells were identified as autologous peripheral blood stem cells by expressing CD90, CD133 and Flk-1. After 4, 10 and 14 days culture, the expression of CD133 increased first and then descended, and Flk-1 showed an increasing trend. Compared with the routine treatment group, the expression of tumor necrosis factor-α induced protein 6 in the cell transplantation group was significantly higher (P < 0.05), while the expression of nuclear factor κB was significantly lower (P < 0.05). In conclusion, the isolation and identification methods of autologous peripheral blood stem cells are simple and can be used to secrete a large number of nutritional factors in the treatment of lung adenocarcinoma, which can enhance body immunity in the treatment.

 

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

Key words: Peripheral Blood Stem Cell Transplantation, Lung Neoplasms, Adenocarcinoma, Cell Separation, Immunity, Tissue Engineering

CLC Number: