Cross-reactivity of antibody against SARS-coronavirus nucleocapsid protein with IL-11

Infection of SARS-associated coronavirus (SARS-CoV) induced a strong anti-nucleocapsid (anti-N) antibody response. However, the pathophysiological significance of the anti-N antibodies in SARS pathogenesis is largely unknown. To profile the anti-N antibodies, a phage-displayed scFv library was prepa...

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Detalles Bibliográficos
Autores principales: Cheng, Man, Chan, Ceci W.L., Cheung, Randy C.F., Bikkavilli, Rama Kamesh, Zhao, Qi, Au, Shannon W.N., Chan, Paul K.S., Lee, Susanna S.T., Cheng, Gregory, Ho, Walter K.K., Cheung, Wing-Tai
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier Inc. 2005
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7092895/
https://www.ncbi.nlm.nih.gov/pubmed/16263078
http://dx.doi.org/10.1016/j.bbrc.2005.10.088
Descripción
Sumario:Infection of SARS-associated coronavirus (SARS-CoV) induced a strong anti-nucleocapsid (anti-N) antibody response. However, the pathophysiological significance of the anti-N antibodies in SARS pathogenesis is largely unknown. To profile the anti-N antibodies, a phage-displayed scFv library was prepared from mice immunized with heat-inactivated SARS-CoV-infected Vero E6 cell lysate. Specific anti-N scFvs were isolated by panning against a recombinant nucleocapsid protein and reactivity was confirmed with phage-ELISA. Sequence analysis indicated that two of the isolated anti-N scFv clones were identical and displayed a high homology with an scFv specific for interleukin 11 (IL-11), an anti-inflammatory cytokine derived from bone marrow stroma cells. In a neutralization assay, IL-11-induced STAT 3 phosphorylation in rat intestinal epithelial IEC-18 cells was completely suppressed by the anti-N scFv clone L9N01.

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