Human CD83 HEK293 Overexpression Lysate: Product Information
This Human CD83 overexpression lysate was created in HEK293 Cells and intented for use as a Western blot (WB) positive control. Purification of CD83 protein (Cat: 11763-H08H) from the overexpression lysate was verified.
A DNA sequence encoding the human CD83 (Q01151-1) extracellular domain (Met 1-Ala 143) was expressed, with a polyhistidine tag at the C-terminus.
The recombinant human CD83 consists of 135 amino acids and predictes a molecular mass of 15.5 kDa. In SDS-PAGE under reducing conditions, the apparent molecular mass of rh CD83 is approximately 20-30 kDa due to different glycosylation.
Human CD83 HEK293 Overexpression Lysate: Usage Guide
Cell lysate was prepared by homogenization of the over-expressed cells in ice-cold modified RIPA Lysis Buffer with cocktail of protease inhibitors (Sigma). Cell debris was removed by centrifugation. Protein concentration was determined by Bradford assay (Bio-Rad protein assay, Microplate Standard assay). The cell lysate was boiled for 5 min in 1 x SDS loading buffer (50 mM Tris-HCl pH 6.8, 12.5% glycerol, 1% sodium dodecylsulfate, 0.01% bromophenol blue) containing 5% b-mercaptoethanol, and lyophilized.
1. Centrifuge the tube for a few seconds and ensure the pellet at the bottom of the tube.
2. Re-dissolve the pellet using 200μL pure water and boil for 2-5 min.
1 X Sample Buffer (1 X modified RIPA buffer+1 X SDS loading buffer).
Stability & Storage
Store at 4℃ for up to twelve months from date of receipt. After re-dissolution, aliquot and store at -80℃ for up to twelve months. Avoid repeated freeze-thaw cycles.
Western Blot (WB) Optimal dilutions/concentrations should be determined by the end user.
Human CD83 HEK293 Overexpression Lysate: Alternative Names
Human BL11 Overexpression Lysate; Human HB15 Overexpression Lysate
CD83 Background Information
The cluster of differentiation (CD) system is commonly used as cell markers in immunophynotyping. Different kinds of cells in the immune system can be identified through the surface CD molecules which associating with the immune function of the cell. There are more than 32 CD unique clusters and subclusters have been identified. Some of the CD molecules serve as receptors or ligands important to the cell through initiating a signal cascade which then alter the behavior of the cell. Some CD proteins do not take part in cell signal process but have other functions such as cell adhesion. CD83 is considered as a marker of mature dendritic cells as well as an adhesion receptor that binds to resting monocytes and a subset of activated CD8+ T cells. In certain conditions, CD83 tended to dimerize or even multimerize through its aberrant intermolecular disulfide bonds. The injection of CD83-Ig can significantly enhaunce the rate of tumor growth and inhibit the T cell growth.
Zola H, et al. (2007) CD molecules 2006-human cell differentiation molecules. J Immunol Methods. 318 (1-2): 1-5.
Ho IC, et al. (2009) GATA3 and the T-cell lineage: essential functions before and after T-helper-2-cell differentiation. Nat Rev Immunol. 9 (2): 125-35.
Matesanz-Isabel J, et al. (2011) New B-cell CD molecules. Immunology Letters.134 (2): 104-12
Scholler N, et al.(2002) Cutting Edge: CD83 Regulates the Development of Cellular Immunity. The Journal of Immunology. 168 (6): 2599-602.
Lechmann M, et al.(2002) CD83 on dendritic cells: more than just a marker for maturation. Trends in immunology. 23(6): 273-5.
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