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Applications: Screen and validate antibodies against LAIR1 for drug discovery and research.Perform binding assays to screen for potential LAIR1 ligands.
Background: LAIR1, also known as leukocyte-associated immunoglobulin-like receptor 1 or CD305 (cluster of differentiation 305) is an inhibitory receptor present in NK (natural killer) cells, T and B cells. In NK cells it binds to SHP-1 (Src homology 2 domain-containing protein tyrosine phosphatase 1) and SHP-2 phosphatases, resulting in inhibition of NK-mediated cytotoxicity. LAIR1 contributes to CD8+ T- cell exhaustion in cancer, by binding to collagen and suppressing T cell activity via SHP-1. The increased expression of collagen and LAIR1 in lung cancer patients is linked to a poor prognostic. In addition, patients that develop resistance to PD-1 (programmed death 1) inhibitor treatment present LAIR1 expression. The use of inhibitors that prevent the binding of LAIR1 to its ligand has been shown to increase anti-tumor immunity. Further studies are needed to fully elucidate the role of LAIR1 in cancer and develop efficacious therapies targeting LAIR1 alone or in combination with PD-1 inhibitors.
Description: LAIR1 CHO Cell Line is a clonal CHO cell line stably expressing full-length human LAIR1 (leukocyte-associated immunoglobulin-like receptor 1) (NM_002287.6). Surface expression of LAIR1 was confirmed by flow cytometry. This stable clonal cell line was selected for high levels of LAIR1 expression compared to the parental CHO-K1 cell line.
Host Cell Line: CHO-K1 cells, Chinese Hamster Ovary, epithelial-like cells, adherent
Mycoplasma Testing: The cell line has been screened to confirm the absence of Mycoplasma species.
Storage Stability: Cells are shipped in dry ice and should immediately be thawed or stored in liquid nitrogen upon receipt. Do not use a -80°C freezer for long term storage.
Supplied As: Each vial contains >1 x 106 cells in 1 ml of Cell Freezing Medium (BPS Bioscience #79796)
Warnings: Avoid freeze/thaw cycles
Biosafety Level: BSL-1
References: Meyaard L., et al., 1997 Immunity 7(2): 283-90.Aung T., et al., 2023 Cancer Res Commun. 3(3): 471-482.
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