Abstract
Interleukin-14alpha is cytokine encoded by the plus strand of il-14 gene using exons 3-10. It has been demonstrated in an IL-14-transgenic mice model that IL-14alpha could enhance an immune response to both TD and TI antigens and induce a phenotype that is very similar to SLE and Sjögren's syndrome, indicating that IL-14alpha may play an important role in autoimmune disease. To further study the role of IL-14alpha in human immune diseases, there is an urgent need to generate specific anti-human IL-14alpha monoclonal antibodies. In this study, we immunized BALB/c mice with synthesized human IL-14alpha-C polypeptide and obtained a novel monoclonal antibody, the anti-IL-14alpha-C antibody. Analysis by enzyme-linked immunosorbent assay (ELISA), spot-ELISA, Western blot, and immuoprecipitation revealed that the MAb were specifically against recombinant human IL-14alpha protein, and its subtype and affinity constant (K(aff)) were IgG2a/kappa and 1.007 x 10(8) M(-1), respectively. This antibody might facilitate studies for pathophysiology of autoimmune disease.
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