Neutralization of food allergens by thioredoxin

Food or edible material: processes – compositions – and products – Products per se – or processes of preparing or treating... – Protein – amino acid – or yeast containing

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424 944, 426541, 426549, 426574, 426581, A23L 103

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057925062

ABSTRACT:
Thioredoxin, a small dithiol protein, is a specific reductant for major allergenic proteins present in widely used foods from animal and plant sources. All targeted allergenic proteins contain disulfide (S--S) bonds that are reduced to the sulfhydryl (SH) level by thioredoxin. The proteins are allergenically active in the oxidized (S--S) state. When reduced (SH state), they lose their allergenicity. Thioredoxin achieved this reduction when activated (reduced) either by NADPH via NADP-thioredoxin reductase (physiological conditions) or by dithiothreitol, a chemical reductant. Skin tests and feeding experiments carried out with sensitized dogs showed that treatment of the food with reduced thioredoxin prior to ingestion eliminated or decreased the allergenicity of the food.

REFERENCES:
patent: 5028419 (1991-07-01), Pigiet
Florencio et al., "An NADP/Thioredoxin System in Leaves: Purification and Characterization of NADP-Thioredoxin Reductase and Thioredoxin ih from Spinach," Arch. Biochem. Biophys., 266(2):496-507 (1988).
Crawford et al., "Evidence for Function of the Ferredoxin/Thioredoxin System in the Reductive Activation of Target Enzymes of Isolated Intact Chloroplasts," 271(1):223-239 (1989).
Yamada, "Inactive Debranching-Enzyme in Rice Seeds, and its Activation," Carbohydrate Research, 90:253-157 (1981).
Wada et al., "Purothionin: A Seed Protein with Thioredoxin Activity," FEBS Letters, 124(2):237-240 (1981).
Russel et al, "Sequence of Thioredoxin Reductase from Escherichia coli," J. Biol. Chem., 263(18):9015-9019 (1988).
Holmgren et al., "Thioredoxin and Glutaredoxin Systems" J. Biol. Chem., 264(24):13963-13966 (1989).
Edman et al., "Sequence of Protein Disulphide Isomerase and Implications of its Relationship to Thioredoxin," Nature, 317(19):267-270 (1985).
Johnson et al., "Reduction of Purothionin by the Wheat Seed Thioredoxin System," Plant Physiol., 85:446-451 (1987).
Birk, "Proteinase Inhibitors from Plant Sources," Method Enz., 45:695-739 (1976).
Suske, G., et al., "NADPH-Dependent Thioredoxin Reductase and a New Thioredoxin from Wheat," Z. Naturforsch. C., 34:214-221 (1979).
Bodenstein-Lang, J., et al., "Animal and Plant Mitochondria Contain Specific Thioredoxins," FEBS Lett. 258:22-26 (1989).
Birk, Y., "The Bowman-Birk Inhibitor," Int. J. Peptide Protein Res. 25:113-131 (1985).
Ryan, C.A. et al., "Proteinase Inhibitors," The Biochemistry of Plants, 6:351-370 (1981).
Watt, D. D., et al, "Effects on Lethality of Toxins in Venom from the Scorpion Centruroides Sculpturatus by Group Speciic Reagents," Toxicon 10:173-181 (1972).
de la Motte-Guery, F. et al., "Mutation of a Negatively Charged Amino Acid in Thioredoxin Modifies its Reactivity with Chloroplastic Enzymes," Eur. J. Biochem. 196:287-294 (1991).
Jacquot, J.-P., et al., "Enzyme Regulation in C.sub.4 Photosynthesis.sup.1,2 " Plant Physiol. 68:300-304 (1981).
Kobrehel, K. et al., "Isolation and Partial Characterisation of Two Low Molecular Weight Durum Wheat (Triticum durum) Glutenins," J. Sci. Food Agric. 48:441-452 (1989).
Laemmli, "Cleavage of Structural Proteins During the Assembly of the Head of Bacteriophage T4" Nature 227:680-685 (1970).
Nishizawa, A.N., et al. (1982), "Chloroplast Fructose-1, 6-Bisphosphatase from Spinach Leaves," Methods in Chloroplast Molecular Biology, (M. Edelman, R.B. Hallick and N.-H. Chua, eds.) pp. 707-714, Elsevier Biomedical Press, New York.
Kassel, B., et al., "The Basic Trypsin Inhibitor of Bovine Pancreas," Biochem. Biophys. Res. Commun. 20:463-468 (1965).
Jones, B.L., et al. "Amino Acid Sequences of the Two .varies.-Purothionins of Hexaploid Wheat," Cereal Chem. 54:511-523 (1977).
Wolosiuk, R.A., et al., "Thioredoxin and Glutathione Regulate Photosynthesis in Chloroplasts," Nature 266:565-567 (1977).
Tsang, M.L.-S., "Thioredoxin/Gluyaredoxin System of Chlorella," Plant Physiol. 68:1098-1104 (1981).
Bushuk, W., et al., "Wheat Cultivar Identification by Gliadin Electrophoregrams. I. Apparatus, Method and Nomenclature," Can. J. Plant Sci. 58:505-515 (1978).
Sapirstein, H.D., et al., "Computer-Aided Analysis of Gliadin Electropheregrams. I. Improvement of Precision of Relative Mobility Determination by Using a Three Reference Band Standardization," Cereal Chem. 62:372-377 (1985).
Fickenscher, K., et al., "Purification and Properties of the Cytoplasmic Glucose-6-Phosphate Dehydrogenase from Pea Leaves," Arch. Biochem. Biophys. 247:393-402 (1986).
Scheibe, R., et al., "Chloroplast Glucose-6-Phosphate Dehydrogenase: K.sub.m Shift upon Light Modulation and Reduction," Arch. Biochem. Biophys. 274:290-297 (1990).
Johnson, T.C., et al., "Thioredoxin and NADP-Thioredoxin Reductase from Cultured Carrot Cells," Planta 171:321-331 (1987).
Muller, E.G.D., et al., "Thioredoxin is Essential for Photosynthetic Growth" J. Biol. Chem. 264:4008-4014 (1989).
Frick et al., "Immunoglobulin E Antibodies to Pollens Augmented in Dogs by Virus Vaccines," Am. J. Vet. Res., 44(3):440-445 (1983).
Wide et al., "Diagnosis of Allergy by an In-Vitro Test for Allergen Antibodies," The Lancet, pp. 1105-1107 (Nov. 25, 1976).
Kahlert et al., "Epitope Analysis of the Allergen Ovalbumin With Monoclonal Antibodies and Patients' IgE," Molecular Immunology, 29(10):1191-1201 (1992).
Matsuda et al., "Reduction of Ovomucoid Immunogenic Activity on Peptic Fragmentation and Heat Denaturation," Agric. Biol. Chem., 49(7):2237-2241 (1985).
Elsayed, S. et al. (1971) "Characterization of a major allergen (cod). Observations on effect of denaturation on allergenic activity," J. Allergy 47:283-291.
Esch et al. (1989), "Idenntification and localization of allergenic determinants on Grass Group I antigens using monoclonal antibodies," J. Immunol. 142:179-184.
Burks, A.W. et al. (1992), "Allergenicity of peanut and soybean extracts altered by chemical and thermal denaturation in patients with atopic dermatitis and positive food challenges," J. Allergy Clin. Immunol. 90:889-897.
Morton, J.I. et al. (161), "Immunochemical Studies of Modified Ovomucoids," Arch. Biochem. Biophys. 93:661-665.
Holmgren (1979), "Reduction of disulfides by thioredoxins," J. Biol. Chem 254:9113-9119.
Holmgren (1985), "Thioredoxin," Ann. Rev. Biochem. 54:237-271.

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