Document Detail

Allergenicity assessment of Allium sativum leaf agglutinin, a potential candidate protein for developing sap sucking insect resistant food crops.
MedLine Citation:
PMID:  22110739     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Mannose-binding Allium sativum leaf agglutinin (ASAL) is highly antinutritional and toxic to various phloem-feeding hemipteran insects. ASAL has been expressed in a number of agriculturally important crops to develop resistance against those insects. Awareness of the safety aspect of ASAL is absolutely essential for developing ASAL transgenic plants.
METHODOLOGY/PRINCIPAL FINDINGS: Following the guidelines framed by the Food and Agriculture Organization/World Health Organization, the source of the gene, its sequence homology with potent allergens, clinical tests on mammalian systems, and the pepsin resistance and thermostability of the protein were considered to address the issue. No significant homology to the ASAL sequence was detected when compared to known allergenic proteins. The ELISA of blood sera collected from known allergy patients also failed to show significant evidence of cross-reactivity. In vitro and in vivo assays both indicated the digestibility of ASAL in the presence of pepsin in a minimum time period.
CONCLUSIONS/SIGNIFICANCE: With these experiments, we concluded that ASAL does not possess any apparent features of an allergen. This is the first report regarding the monitoring of the allergenicity of any mannose-binding monocot lectin having insecticidal efficacy against hemipteran insects.
Hossain Ali Mondal; Dipankar Chakraborti; Pralay Majumder; Pampa Roy; Amit Roy; Swati Gupta Bhattacharya; Sampa Das
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2011-11-16
Journal Detail:
Title:  PloS one     Volume:  6     ISSN:  1932-6203     ISO Abbreviation:  PLoS ONE     Publication Date:  2011  
Date Detail:
Created Date:  2011-11-23     Completed Date:  2012-03-26     Revised Date:  2013-06-27    
Medline Journal Info:
Nlm Unique ID:  101285081     Medline TA:  PLoS One     Country:  United States    
Other Details:
Languages:  eng     Pagination:  e27716     Citation Subset:  IM    
Division of Plant Biology, Bose Institute, Kolkata, West Bengal, India.
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MeSH Terms
Allergens / chemistry,  genetics,  immunology*,  metabolism
Amino Acid Sequence
Antibody Specificity
Biotechnology / methods*
Computational Biology
Crops, Agricultural / genetics*
Cross Reactions
Garlic / chemistry*
Hemiptera / physiology*
Hypersensitivity / blood
Immunoglobulin E / blood,  immunology
Intestines / metabolism
Molecular Sequence Data
Pepsin A / metabolism
Plant Leaves / chemistry*
Plant Lectins / chemistry,  genetics,  immunology*,  metabolism
Plants, Genetically Modified
Protein Stability
Protein Transport
Sequence Homology, Amino Acid
Reg. No./Substance:
0/Allergens; 0/Plant Lectins; 37341-29-0/Immunoglobulin E; EC A

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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