IgE Reactivity to Common Cypress (C. Sempervirens) Pollen Extracts: Evidence for Novel Allergens

World Allergy Organization Journal

Pascal Poncet²  Hélène Sénéchal⁴  Denis Charpin¹  Gabriel Peltre³  Jean-Pierre Sutra³  Youcef Shahali³ 

[1] Hôpital Nord, Marseille, France;Pasteur Institute, Paris, France;ESPCI ParisTech, PECSA, UMR CNRS 7195, Paris, France;Inserm, Paris, France

关键词: immunoblotting patterns;    water insoluble allergens;    cypress pollen;    C. sempervirens;   

Others  :  1180774
DOI  :  10.1097/WOX.0b013e3181eb3525

【 摘 要 】

Background

Cypress pollen is becoming an increasing cause of respiratory allergy in some regions worldwide.

Objective

The aim of this study was to determine some of the main allergens implicated in the common cypress (C. sempervirens) pollen allergy.

Methods

Pollen extracts were optimized by using some detergents and chaotropes in order to solubilize both water and non-water soluble proteins. C. sempervirens pollen extracts were resolved by one and two dimensional electrophoresis and assayed with sera of allergic subjects.

Results

Five predominant allergens with apparent molecular masses ranging from 14 to 94 kDa were detected. Two principal IgE-binding patterns were clearly distinguishable: a first one represents patients with a heterogeneous IgE reactivity to several allergens (pI 3.5-8.5) with molecular masses ranging from 35 to 94 kDa (HMW). The second one corresponds to little less than 50 percent of tested patients with specific IgE binding to 2-3 spots (pI 10-11) of about 14 kDa and weak or no reactivity to HMW allergens.

Conclusion

The extraction of water insoluble proteins allows the revelation of novel allergens as well as different allergen sensitization patterns in the C. sempervirens pollen allergy. These novel IgE reactive components may subsequently be applied to expand the panel of well-defined cypress pollen molecules for a more efficient allergen-based diagnosis and therapy.

【 授权许可】

   
2010 World Allergy Organization; licensee BioMed Central Ltd.

【 图 表 】

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