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연세대학교 의과대학 Yonsei Medical Journal Yonsei Medical Journal 제59권 제7호
발행연도
2018.1
수록면
852 - 856 (5page)

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Purpose: Japanese hop (Humulus japonicus) is a major cause of weed pollinosis in East Asia. However, supplies of commercialallergen extract from this plant have not met clinical demand. The pollen of common hop (Humulus lupulus), a closely relatedspecies, may provide an alternative source if there is strong IgE cross-reactivity between these two species. We aimed to comparethe IgE cross-reactivity and allergenicity of common hop and Japanese hop pollen. Materials and Methods: Cross-reactivity was measured by inhibition ELISA. One- and two-dimensional (2D) gel analyses combinedwith IgE immunoblotting and mass spectrometry [liquid chromatography coupled to electrospray ionization tandem massspectrometry (LC-ESI-MS/MS)] were performed to detect IgE-reactive pollen components. Results: Up to 16.7% of IgE reactivity to Japanese hop was inhibited by common hop. A 12-kDa protein component of Japanese hoppollen that showed the most potent IgE reaction was absent from common hop. Six IgE-reactive components from Japanese hopwere detected by 2D gel electrophoresis and LC-ESI-MS/MS, but showed low Mascot scores, preventing positive identification. Conclusion: No significant IgE cross-reaction was observed for Japanese and common hop pollen allergens. Development of allergydiagnostic and immunotherapeutic reagents based on Japanese hop pollen are urgently needed.

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