Solid tumor patient autologous NK cell separation, excitation, amplification and activity detection method
A technology for NK cells and solid tumors, applied in biochemical equipment and methods, animal cells, vertebrate cells, etc., to achieve the effects of multiple amplification, simple operation steps, and low cost of reagents and consumables
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[0070] Example 1
[0071] A method for isolating, activating and expanding autologous NK cells from patients with solid tumors, comprising the following steps:
[0072] (1) Collection and separation of NK cells:
[0073] 1.1. Peripheral blood collection: 40~60ml of peripheral blood from patients with solid tumors, the most suitable for 50ml. The collection device is a disposable 100ml syringe containing 10ml of normal saline and 50unit / ml of heparin sodium anticoagulant, and the amount of heparin sodium is calculated according to the volume of collected blood. 2ml of peripheral blood was drawn to detect lymphocyte subsets by flow cytometry.
[0074] 1.2. NK cell isolation:
[0075] 1.2a. Put the collected peripheral blood into a 50ml centrifuge tube, centrifugation conditions: centrifugal force 500g, centrifugation time 10min. Aspirate the plasma with a pipette and put it into another centrifuge tube, inactivate it in a 56°C water bath for 30 minutes, and then centrifuge...
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[0105] Example 2
[0106] A method for detecting the cytotoxic effect of autologous NK cells in patients with solid tumors, comprising the following steps:
[0107] 3.1. CFSE-labeled target cells:
[0108] Tumor cell culture: Suspend tumor cell lines (K562 cells) in 1640 medium containing 10% inactivated fetal bovine serum (FBS), and place at 37°C, 5% CO. 2 , subcultured under saturated humidity conditions.
[0109] CFSE-labeled target cells: collect tumor cells in good growth condition, use PBS buffer, centrifuge at a centrifugal force of 300 g, and centrifuge at room temperature for 5 min. Wash twice, count with trypan blue and resuspend cells in PBS buffer. Add the pre-warmed CFSE-PBS solution to the cell pellet (the final concentration of CFSE is 2umol / L), and gently pipette the suspended cells (the cell concentration is 1×10). 6 / mL). Cells were placed at 37°C for 5-10 min. The reaction was terminated by adding 10 mL of 1640 medium containing 10% FBS. Centrifuge th...
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