Lọc theo danh mục
  • Năm xuất bản
    Xem thêm
  • Lĩnh vực
liên kết website
Lượt truy cập
 Lượt truy cập :  22,411,148
  • Công bố khoa học và công nghệ Việt Nam

Công nghệ sinh học liên quan đến y học, y tế

Nguyễn Thị Trung(1), Trương Nam Hải

Nghiên cứu sử dụng dòng tế bào lai A6G11C9 đê sản xuất kháng thể đơn dòng gây ngưng kết hồng cầu chứa kháng nguyên A

Study on using the hybrid cell a6g11c9 to produce the anti-a monoclonal antibody that agglunating a antigen on the surface of red blood cells

Sinh học

2018

1

25-31

0866-7160

Hoàn thiện quy trình thu nhận kháng thể đơn dòng kháng A từ dịch nuôi cấy tế bào lai A6G11C9 n thiện. Kháng thể kháng A được thu lại bằng cách tủa với NH4SO4 nồng độ cuối cùng là 50% bão hòa. Kháng thể được cô đặc 5 lần so với thể tích dịch nuôi cấy ban đầu có hiệu giá kháng thể là 1/512 và cường độ phản ứng ngưng kết hồng cầu A là 4+.

Almost of the ABO blood grouping reagents is being trading derive from the monoclonal antibodies. There are two methods to produce the monoclonal antibodies from hybridoma lines, which were in vitro method (hybridoma cultured in the medium) and in vivo method (hybridoma cultured in the mice intraabdominal). In Vietnam, Nguyen Thi Trung and co-authors was succesfully screened in hybridoma cell line A6G11C9 which generating of the anti A monoclonal antibody agglutinated A antigen on the surface of red blood cells. The fusion of mouse lymohocyte B generated anti-A antibody with mouse myeloma sp2/0 is formed that hybrid cell lines. The anti-A monoclonal antibody is produced from hybridoma cell line A6G11C9 have been highly intensive confirmed. It is capability of growth and anti B monoclonal antibody producing stability through the generations. In this study, the process to produce large amounts of monoclonal antibodies from B4D10C9 hybridoma by in vitro method are published. Firstly, hybridoma cells are stored in liquid nitrogen to wake by culture in medium. Then, First, hybrid cells are stored frozen in liquid nitrogen to wake cultured cells. Then, they were first inoculated to produce enough biomass to serve a larger scale. Cell biomass continues to be second inoculated into DMEM containing 10% fetal bovin serum for 10 days. The culture medium contained anti-A monoclonal antibodies were collected by centrifugation to remove cells. The anti-A monoclonal antibody levels in culture medium was concentrated and remove phenol red indicator by the precipitation with NH4SO4 50% saturated. The anti-A monoclonal antibody solution at 5 times concentrated have been better agglutinated with erythrocytes containing A antigen than monoclonal antibody solution non-concentration. 150 ml of concentrated antibodies were produced. Antibody titer of the anti-A monoclonal antibodies in the concentrated 5 times solution was 1/512. The intensity of the reaction anti-A monclonal antibody with red blood cell containing A antigen was 4+.

TTKHCNQG, CVv 27

  • [1] (2006), International standards for minimum potency of anti-A and anti-B blood grouping reagents,http://www.who.int/bloodproducts/cs/06205 3antiaantib.pdf, mục 7, phụ lục 2: Reference method for testing the candidate minimum potency reference preparations for anti-A and anti-B, 47-49
  • [2] Velez D., Reuveny S., Miller L., MacMillan J. D., (1986), Kinetics of monoclonal antibody production in low serum growth medium,J. Immunol., 86(1): 45-52
  • [3] Tarleton R. L., Beyer A. M., (1991), Medium-scale production and purification of monoclonal antibodies in protein-free medium,Biotechniques, 11(5): 590-593
  • [4] Pollack W., Reckel R. P., (1977), A reappraisal of the forces involved in hemagglutination,Int Arch Allergy Appl Immunol., 54(1): 29-42
  • [5] Nguyễn Thị Trung, Nguyễn Thị Hằng, Vũ Thị Thu Hằng, Lê Văn Phan, Trương Nam Hải, (2016), Tạo dòng tế bào hybridoma tiết kháng thể đơn dòng gây ngưng kết hồng cầu người mang kháng nguyên A,Tạp chí Công nghệ sinh học, 14(3): 1-8
  • [6] Köhler G., Milstein C., (1975), Continuous cultures of fused cells secreting antibody of predefined specificity,Nature, 256(5517): 495v
  • [7] Federspiel G., Mccullough K. C., Kihm U., (1991), Hybridoma antibody production in vitro in type II serum-free medium using Nutridoma-SP supplements. Comparisons with in vivo methods,J. Immunol. Methods, 145(1-2): 213-221.
  • [8] Darby C. R., Hamano K., Wood K. J., (1993), Purification of monoclonal antibodies f-rom tissue culture medium depleted of IgG,J. Immunol. Methods, 159: 125
  • [9] Bruce M. P., Boyd V., Duch C., White J. R., (2002), Dialysis-based bioreactor systems for the production of monoclonal antibodies-Al-ternatives to ascites production in mice,J Immunol Methods, 264(1-2): 59-68