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Preparation method of human D-CIK (dendritic cell activated and cytokine induced killer) cell with high toxicity and high value-adding capacity

A toxic and cellular technology, applied in the field of cellular immunology, can solve the problems of heterogeneous cell population proliferation ability and cytotoxic activity, etc., to achieve strong tumor cell killing activity, high cell expansion efficiency, and easy large-scale production Effect

Inactive Publication Date: 2014-03-19
SHENZHEN HORNETCORN BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art, and further improve the CIK cell and DC co-cultivation scheme on the basis of selecting an optimized CIK cell and DC culture scheme, and provide a new preparation of human D-CIK cells The method and its application solve the problems that the proliferation ability and cytotoxic activity of heterogeneous cell populations are not significantly improved after the co-cultivation of CIK cells and DCs in the prior art

Method used

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  • Preparation method of human D-CIK (dendritic cell activated and cytokine induced killer) cell with high toxicity and high value-adding capacity
  • Preparation method of human D-CIK (dendritic cell activated and cytokine induced killer) cell with high toxicity and high value-adding capacity
  • Preparation method of human D-CIK (dendritic cell activated and cytokine induced killer) cell with high toxicity and high value-adding capacity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In Example 1, the obtained PBMCs were isolated and cultured with D-CIK cells. Include the following steps:

[0039] 1. Collect 30-50 ml of peripheral venous blood from the patient, and obtain mononuclear cells by density gradient centrifugation of Ficoll-diatrizoate glucosamine. The specific steps are: 1500 rpm, centrifuge for 10 minutes, absorb the upper plasma layer, inactivate at 56°C for 30 minutes and centrifuge for later use, dilute the precipitated blood cells with normal saline, and divide human lymphocyte separation medium and diluted blood at a ratio of 1:2 Add the proportion into a centrifuge tube, centrifuge at 2000 rpm for 20 minutes, carefully absorb the buffy coat, wash twice with normal saline at 1600 rpm and 1300 rpm, and centrifuge for 7 minutes to obtain PBMCs .

[0040] 2. The above PBMCs were further separated to obtain mononuclear cells and suspension cells by the adherence method. The specific steps are: resuspend the above isolated PBMCs in PA...

Embodiment 2

[0045] Example 2 is to detect the morphology and proliferation ability of D-CIK cells. Include the following steps:

[0046] 1. DC and CD3+CD8+CIK were co-cultured for 24 hours, and the cells could be seen sinking to the bottom of the culture flask, with a large number of colonies of different sizes and irregular mononuclear cells. The cells cultured for 12 to 14 days were stained with Reggie's staining, and it was found that most of the cells were enlarged in size, oval or irregular in shape, most of the nuclei were oval or round, the nuclear staining was loose, and the nuclear membrane was irregular and protruding , a small nucleolus can be seen in each cell, which is dark blue; the cytoplasm is abundant, stained gray-blue, irregular in shape, with pseudopodia, light staining near the nucleus, and irregular in shape. Take 100 μl of cells cultured for 12-14 days, add 100 μl of 0.4% trypan blue staining solution, live cells are not stained, dead cells are stained blue, and co...

Embodiment 3

[0052] Example 3 is to detect the immunophenotype of D-CIK cells. Proceed as follows:

[0053] Take the cells on day 14, wash them twice with PBS containing 5% newborn bovine serum and 0.1% sodium azide, adjust the cell density to 1×106 / ml, add 50 μl of cell suspension to each detection tube, and add fluorescently labeled antibodies (anti-CD3-FITC, CD4-PE, CD8-PECY5.5, CD56-APC) staining, incubate at 4°C in the dark for 30 minutes, wash with the above PBS twice, add PBS solution containing 1% paraformaldehyde to fix, The flow cytometer was used for detection, and the data files were analyzed by WinMDI software. The results are shown in Figure 4 ,Table 2.

[0054] Table 2: Effects of different culture methods on the phenotype of PBMCs derived from peripheral blood (n=8)

[0055]

[0056]The results showed that on the 14th day of culture, there was no statistically significant difference among the CD3+ and CD3-CD56+ cells among the three groups of cells; the CD3+CD8+ and ...

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Abstract

The invention belongs to the technical field of cell immunity, and particularly relates to a preparation method of a human D-CIK (dendritic cell activated and cytokine induced killer) cell with high toxicity and high value-adding capacity. The preparation method comprises the following steps of 1) collecting peripheral venous blood so as to obtain a single karyocyte; 2) further separating the single karyocyte so as to obtain a mononuclear cell and a suspension cell; 3) induced differentiating the mononuclear cell to a mature DC (dendritic cell); 4) induced culturing CD3+CD8+CIK cells; 5) induced culturing the D-CIK cells so as to obtain a novel heterogeneity cell mass, i.e. D-CIK cells. Compared with the CIK cell, the value-adding activity and the cell toxic activity of the prepared D-CIK cell are stronger, and the prepared D-CIK cell also has the advantages of simple preparation process, low cost, and the like, and mass production is easy to realize. The prepared D-CIK cell is mainly used for treating cancer patients or preventing the cancer high-risk group.

Description

technical field [0001] The invention belongs to the technical field of cellular immunology, in particular to a preparation method of human D-CIK cells with high toxicity and high value-proliferating ability. Background technique [0002] Cytokine induced killer cells (CIK) are a group of heterogeneous cells induced from peripheral blood mononuclear cells (PBMCs) reported by Schmidt et al. in 1986. The main effector cells are also called NK cell-like T lymphocytes (NKT cells) because they express both CD3+ and CD56+ membrane protein molecules. Experimental studies in vitro and in vivo have shown that CIK cells have the advantages of high tumor-killing activity, fast proliferation, anti-apoptosis and tumor-killing effects that are not affected by multi-drug resistance of cancer cells. [0003] Dendritic cell (DC) is the most powerful antigen-presenting cell (APC) known so far, and its surface is rich in molecules that help antigen presentation, such as major histocompatibilit...

Claims

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Application Information

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IPC IPC(8): C12N5/0783
Inventor 马飞李龙云李正成
Owner SHENZHEN HORNETCORN BIOTECH
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