摘要:
The present invention provides a system in which a recombinant plant expressing a target peptide is orally administered to thereby achieve exertion of the function of the peptide, along with the genetically recombinant plant, and the present invention relates to a carrier system for oral administration of a target peptide by oral administration of a plant (potato) that expresses a target peptide by expressing for example a fused gene obtained by fusing the LRE1 gene coding for the immunogenic peptide LRE1 derived from the Leucocytozoon caulleryi 2nd-generation schizont with a Norwalk virus coat protein gene, along with the relevant genetically recombinant plant, and thus, in the present invention the orally administered target peptide can reach an intended destination (such as the intestinal mucosa) without being decomposed in the digestive tract, so that the function of the target peptide can be induced.
摘要:
Immunity against protozoan is conferred on an animal by a method comprising orally administering to an animal a transformed plant cell comprising a polynucleotide encoding a protective antigen against protozoiasis development, a transformed plant or its progeny or clone comprising the transformed cell, a propagation material of the plant or its progeny or clone, a processed material or extract of the above cell, plant, or its progeny or clone, or propagation material, or a protective antigen against protozoiasis development isolated from the transformed plant cell or the transformed plant or its progeny or clone.
摘要:
Leaves of potato plants transformed with a vector that expresses an R7 immunogenic protein gene derived from second-generation schizonts of Leucocytozoon caulleryiwere administered to chickens as an oral vaccine. As a result, the present inventors succeeded in increasing the antibody titer of the chickens.
摘要:
A process for the preparation of a mutant strain of B. bronchiseptica having chromosomal genetic markers carrying at least temperature-sensitive (grown at 42.degree. C.), nalidixic acid-resistant and heat-labile dermonecrotic toxin producing ability negative markers, suitable for the preparation of live attenuated AR vaccine, which comprises subjecting a strain of B. bronchiseptica to an induced mutation, isolating a mutant having the genetic markers of being at least temperature-sensitive (grown at 42.degree. C.), nalidixic acid-resistant and heat-labile dermonecrotic toxin negative, culturing the isolated strain of B. bronchiseptica on a Bordet-gengou agar plate containing nalidixic acid at 42.degree. C., thereafter picking up an organism morphologically resembling a phase-I organism, repeating the procedures of culturing and picking up, and converting the organisms to a heat-labile dermonecrotic toxin-producing ability negative phase-I organism having a complete capsular antigen.