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  • Title: Preparation and characterization of monoclonal antibody against melatonin.
    Author: Soukhtanloo M, Ansari M, Paknejad M, Parizadeh MR, Rasaee MJ.
    Journal: Hybridoma (Larchmt); 2008 Jun; 27(3):205-9. PubMed ID: 18582215.
    Abstract:
    Anti-melatonin monoclonal antibodies (MAb) were prepared following coupling melatonin to bovine serum albumin (BSA) by Mannich reaction. Balb/c mice were immunized via injection of the melatonin-BSA intraperitonally. The spleen cells producing high titer of antibody were fused with myeloma cells of SP2/0 origin. After two limiting dilutions, two stable clones (AS-H10 and AS-D26) exhibiting best properties were selected for further studies. The class and subclass of two MAbs were found to be IgG(1) and IgG(2a) with lambda and kappa light chains, respectively. Antibodies secreted by these two clones showed high affinity of about 10(9)M(1). Study of the specificity criteria showed that these clones had no cross reactivity with indolic, aromatic, and imidazole ring-containing compounds, and had high specificity towards melatonin. The calibration curve was constructed with a sensitivity range of 10 ng/mL to 10 microg/mL. In conclusion, these MAbs may be useful for immunoassay of melatonin.
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