TY - JOUR
T1 - Cloning of three new allergens from the dust mite Lepidoglyphus destructor using phage surface display technology
AU - Eriksson, T L J
AU - Rasool, O
AU - Huecas, S
AU - Whitley, P
AU - Crameri, R
AU - Appenzeller, U
AU - Gafvelin, G
AU - van Hage-Hamsten, M
PY - 2001/1
Y1 - 2001/1
N2 - The dust mite Lepidoglyphus destructor is a common species in Europe and a major cause of dust mite allergy in rural surroundings, but it also contributes to dust mite allergy in urban areas. One major allergen, Lep d 2, has been expressed as a recombinant protein and evaluated both in vivo and in vitro and shown to detect 60% or more of L. destructor-sensitized subjects. Additional recombinant allergens are needed to obtain a reliable diagnostic tool for L. destructor allergy. The aim of this study was to clone and express new allergens from L. destructor and determine their recognition frequency among sensitized individuals. A phage display cDNA expression library was constructed and screened with sera from L. destructor-sensitized individuals. The cDNAs encoding the allergens were cloned into the pET17b vector and subsequently expressed in Escherichia coli as C-terminal His(6)-tagged proteins. Immunoblotting of the recombinant proteins was performed using sera from 45 subjects allergic to L. destructor. Three new allergens from L. destructor, Ld 5 (originating from a partial Lep d 5 clone), Lep d 7 and Lep d 13, were identified and recognized by 4/45 (9%), 28/45 (62%) and 6/45 (13%) sera from L. destructor-sensitized subjects, respectively.
AB - The dust mite Lepidoglyphus destructor is a common species in Europe and a major cause of dust mite allergy in rural surroundings, but it also contributes to dust mite allergy in urban areas. One major allergen, Lep d 2, has been expressed as a recombinant protein and evaluated both in vivo and in vitro and shown to detect 60% or more of L. destructor-sensitized subjects. Additional recombinant allergens are needed to obtain a reliable diagnostic tool for L. destructor allergy. The aim of this study was to clone and express new allergens from L. destructor and determine their recognition frequency among sensitized individuals. A phage display cDNA expression library was constructed and screened with sera from L. destructor-sensitized individuals. The cDNAs encoding the allergens were cloned into the pET17b vector and subsequently expressed in Escherichia coli as C-terminal His(6)-tagged proteins. Immunoblotting of the recombinant proteins was performed using sera from 45 subjects allergic to L. destructor. Three new allergens from L. destructor, Ld 5 (originating from a partial Lep d 5 clone), Lep d 7 and Lep d 13, were identified and recognized by 4/45 (9%), 28/45 (62%) and 6/45 (13%) sera from L. destructor-sensitized subjects, respectively.
UR - http://dx.doi.org/10.1046/j.1432-1327.2001.01879.x
U2 - 10.1046/j.1432-1327.2001.01879.x
DO - 10.1046/j.1432-1327.2001.01879.x
M3 - Article
SN - 0014-2956
VL - 268
SP - 287
EP - 294
JO - European Journal of Biochemistry
JF - European Journal of Biochemistry
IS - 2
ER -