膜杰作
Star Staining
描述（Description）
HEK293/Human CD20 Stable Cell Line
应用说明（Application）
Binding assay by FACS and cell based ELISA.
生长特性（Growth Properties）
Adherent
筛选标记（Selection Marker）
Puromycin (5 μg/mL)
培养基（Culture Medium）
DMEM medium + 10% FBS
冻存液（Freeze Medium）
10% DMSO + 90% FBS
装量（Quantity）
1 vial contains at least 5x10^6 cells in 1 ml of 10% DMSO in FBS.
存储（Storage）
Frozen in liquid nitrogen.
支原体检测（Mycoplasma Testing）
Negative
无菌检测（Sterility Testing）
Negative
使用说明（Instructions for Use）
See data sheet for detailed culturing and assay protocol.
Receptor Assay
FACS assay shows that Monoclonal Anti-Human CD20 Full Length Antibody, Human IgG1 can bind to HEK293/Human CD20 Stable Cell Line. HEK293/Human CD20 Stable Cell Line was red line, Negative control HEK293 cells was grey line (QC tested).
Protocol
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背景（Background）
B-lymphocyte antigen CD20 is also known as B-lymphocyte surface antigen B1, Leukocyte surface antigen Leu-16, Membrane-spanning 4-domains subfamily A member 1 and MS4A1, is an activated-glycosylated phosphoprotein expressed on the surface of all B-cells beginning at the pro-B phase (CD45R+, CD117+) and progressively increasing in concentration until maturity. CD20 is expressed on all stages of B cell development except the first and last; it is present from late pro-B cells through memory cells, but not on either early pro-B cells or plasma blasts and plasma cells. It is found on B-cell lymphomas, hairy cell leukemia, B-cell chronic lymphocytic leukemia, and melanoma cancer stem cells. The protein has no known natural ligand and its function is to enable optimal B-cell immune response, specifically against T-independent antigens. It is suspected that it acts as a calcium channel in the cell membrane. CD20 / MS4A1 is the target of the monoclonal antibodies (mAb) rituximab, Ibritumomab tiuxetan, and tositumomab, which are all active agents in the treatment of all B cell lymphomas and leukemias. Defects in CD20 / MS4A1 are the cause of immunodeficiency common variable type 5 (CVID5); also called antibody deficiency due to CD20 defect. CVID5 is a primary immunodeficiency characterized by antibody deficiency, hypogammaglobulinemia, recurrent bacterial infections and an inability to mount an antibody response to antigen.
Permits & Restrictions
This cell line is provided for research use only. It is not intended for any animal or human therapeutic use, any human or animal consumption, or any diagnostic use. You are not allowed to share, distribute, sell, modify, sublicense, or otherwise make this cell line available for use to other laboratories, departments, research institutions, hospitals, universities, or biotech companies. AcroBiosystems does not warrant the suitability of this cell line for any particular use, and does not accept any liability in connection with the handling or use of this cell line.
