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Creative Biolabs has been setting the standard in quality virology research reagents for over 10 years.
Human CD81-overexpressed 293T pseudohost is produced by transfection 293T cells with a lentiviral vector encoding human CD81 proteins. This stable cell line express human CD81 proteins on the cell surface, and it can be used for drug/vaccine/viral inhibitor screening, neutralizing antibody screening and serum neutralization assay.
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|Application Notes||The pseudohost can be usd for the following applications:|
1. Antibody neutralization assay, Serum neutralization assay.
3. Drug screening including vaccine development, viral entry inhibitor development.
4. Virus entry mechanism discovery.
|Mycoplasma Testing||The cell line has been screened using the luciferase based mycoplasma detection kit to confirm the absence of mycoplasma species.|
|Quality Control||Cultures are screened for the presence of bacteries, yeast, fungi and mycoplasma (DNA amplification). Growth media are also certified based on U.S. Public Health Service Guidelines.|
|Storage||Cells must be thawed immediately upon receipt and grown according to handling procedures to ensure cell viability and proper assay performance. DO NOT FREEZE the cells upon receipt as it may result in irreversible damage to the cell line. After recovery, the cells can be stored at -80°C or liquid nitrogen (-150°C to -190°C) for long term.|
|Note||We cannot guarantee cell viability if the cells are not thawed immediately upon receipt. Avoid multiple freeze/thaw cycles.|
|Introduction||CD81 is a member of the transmembrane 4 superfamily, also known as the tetraspanin family. The proteins mediate signal transduction events that play a role in the regulation of cell development, activation, growth and motility. This encoded protein is a cell surface glycoprotein that is known to complex with integrins. This protein appears to promote muscle cell fusion and support myotube maintenance. This protein plays a critical role in Hepatitis C attachment and/or cell entry by interacting with virus' E1/E2 glycoproteins heterodimer. The large extracellular loop of CD81 binds the hepatitis E2 glycoprotein dimer. HCV-E2 and CD81 binding Kd is 1.8 nM. HCV-E2 engaged CD81 is only 30% internalized after 12hr, suggesting CD81 may be primarily an attachment receptor for HCV.|
|Alternative Names||S5.7; CVID6; TAPA1; TSPAN28|