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APOE / apolipoprotein E Antibody, Rabbit PAb, Antigen Affinity Purified

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ApoEAntibody Product Information
Antigen:Recombinant Human APOE / apolipoprotein E protein (Catalog#10817-H30E)
Clone ID:
Ig Type:Rabbit IgG
Concentration:
Formulation:0.2 μm filtered solution in PBS with 5% trehalose
Preparation:Produced in rabbits immunized with purified, recombinant Human APOE / apolipoprotein E (rh APOE / apolipoprotein E; Catalog#10817-H30E; P02649; Lys 19-His 317). APOE / apolipoprotein E specific IgG was purified by Human APOE / apolipoprotein E affinity chromatography.
ApoEAntibody Usage Guide
Specificity:Human APOE / apolipoprotein E
Application:ELISA, IHC-P

ELISA: 0.1-0.2 μg/mL

This antibody can be used at 0.1-0.2 μg/mL with the appropriate secondary reagents to detect Human ApoE. The detection limit for Human ApoE is approximately 0.00975 ng/well.

IHC-P: 0.1-2 μg/mL

Storage:This antibody can be stored at 2℃-8℃ for one month without detectable loss of activity. Antibody products are stable for twelve months from date of receipt when stored at -20℃ to -70℃. Preservative-Free.
Sodium azide is recommended to avoid contamination (final concentration 0.05%-0.1%). It is toxic to cells and should be disposed of properly. Avoid repeated freeze-thaw cycles.
Images

Immunochemical staining of human APOE in human liver with rabbit polyclonal antibody (1 µg/mL, formalin-fixed paraffin embedded sections).

Background

Apolipoprotein E (ApoE) is a 34.2 kDa glycosylated protein with 299 amino acid residues. There are three isoforms in human (apoE2, apoE3, and apoE4) due to different amino acid residues at positions 112 and 158. ApoE is synthesized predominantly in the liver, but also by cells in the spleen, brain, lung, kidney, ovary, adrenal, and muscle tissues. Hepatic parenchyma cells are the main apoE producing cells in mammalian body, probably accounting for two thirds to three fourths of the plasma apoE . In the nervous system, apoE mRNA is present in neurons, astrocytes, ependymal cells, nonmyelinating Schwann cells, but not in microglia, oligodendroglia, choroidal cells, or myelinating Schwann cells. ApoE produced by mammalian cells exists in different forms, monomers, dimers, modified, unmodified, lipid-rich, and lipid-poor, and so forth. ApoE plays a double-role in immune responses. Both apoE containing lipoproteins and multimers of synthetic apoE peptides inhibited proliferation of cultured lymphocytes by inhibiting DNA synthesis and reducing phospholipid turnover in T cells. ApoE can also affect innate and acquired immune responses in vitro by its ability to suppress stimulation of cultured neutrophils. ApoE can bind lipopolysaccharide (LPS), attenuate the inflammatory response, and thus reduce LPS induced lethality. Injection of LPS stimulated higher expression of inflammatory cytokines like interleukin (IL)-1β, IL-12, and interferon-γ (IFN-γ), as well as IL-6.

References
  • Mahley RW. (1988) Apolipoprotein E: cholesterol transport protein with expanding role in cell biology. Science. 240(4852): 622-30.
  • Aleshkov S, et al. (1989) Interaction of nascent apoe2, apoe3, and apoe4 isoforms expressed in mammalian cells with amyloid peptide. Relevance to Alzheimer's disease. Biochemistry. 36(34): 10571-80.
  • Hussain MM, et al. (1997) Synthesis, modification, and flotation properties of rat hepatocyte apolipoproteins. Biochimica et Biophysica Acta. 101(1): 90-101.
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