摘要:
PCT No. PCT/SE96/00570 Sec. 371 Date Jan. 5, 1998 Sec. 102(e) Date Jan. 5, 1998 PCT Filed May 2, 1996 PCT Pub. No. WO96/34893 PCT Pub. Date Nov. 7, 1996Hybrid molecules between heat-labile enterotoxin B subunit (LTB) and cholera toxin B subunit (CTB) are disclosed. Such a hybrid molecule comprises an amino-acid sequence which is composed of the amino-acid sequence of mature CTB in which such amino-acid residues are substituted with the corresponding amino-acid residues of mature LTB which impart LTB-specific epitope characteristics to said immunogenic mature CTB, or vice versa. In addition, a structural gene coding for such a hybrid molecule, a plasmid containing such a structural gene, and an immunogenic protein comprising such a hybrid molecule and optionally an immunoreactive amino-acid sequence of a prokaryotic or eukaryotic cell or a virus, are disclosed. Disclosed is also a vaccine, e.g. against enterotoxin-induced illness, comprising such an immunogenic protein, and a method of preventing or treating enterotoxin-induced illness in an individual.
摘要:
PROBLEM TO BE SOLVED: To obtain a nasal absorption enhancer promptly releasing tight junction (tj) by a reversible and reproducible method. SOLUTION: A nasal dosage composition for nasal delivery comprises (A) a therapeutic agent and (B) an effective amount of purified Vibrio cholera zonula occludens toxin. The nasal dosage composition containing the therapeutic agent selected from the group consisting of medicinal compounds, biologically active peptides and vaccines is provided. The dosage nasal composition containing the medicinal compounds selected from the group consisting of agents acting on the cardiovascular system, agents acting on the central nervous system, antitumor agents and antibiotics is provided. COPYRIGHT: (C)2006,JPO&NCIPI
摘要:
PROBLEM TO BE SOLVED: To provide an oral composition for colon delivery. SOLUTION: The oral composition for colon delivery comprises (A) a biologically active component and (B) ZOT in an effective amount for promoting the intestinal absorption. In a preferred embodiment, the biologically active components in the oral composition is selected from the group consisting of medicinal compounds, biologically active peptides and vaccine. In a preferred embodiment, the ratio of the biologically active components to the ZOT is at 1/10-3/1 in the oral composition.
摘要:
An immunogenic detoxified protein comprising the amino acid sequence of subunit A of cholera toxin (CT-A) or subunit A of an Escherichia coli heat labile toxin (LT-A) or a fragment thereof wherein one or more amino acids at, or in positions corresponding to Val-53, Ser-63, Val-97, Tyr-104 or Pro-106 are replaced with another amino acid or deleted. Examples of specific replacements include Val-53-Asp, Val-53-Glu, Val-53-Tyr, Ser-63-Lys, Val-97-Lys, Val-97-Tyr, Tyr-104-Lys, Tyr-104-Asp, Tyr-104-Ser, Pro-106-Ser. The immunogenic detoxified protein is useful as vaccine for Vibrio cholerae or an enterotoxigenic strain of Escherichia coli and is produced by recombinant DNA means by site-directed mutagenesis.
摘要:
PROBLEM TO BE SOLVED: To obtain a substance for inducing tolerance to an autoantigen in a patient in an autoantigen disease including a neurodegenerative disease. SOLUTION: A fused polypeptide comprises at least one autoantigen peptide fused to a cholera toxin B subunit through or not through a linker polypeptide. The autoantigen peptide is a proteolipid protein fragment containing an amino acid sequence selected from the group consisting of specific sequences, a myelin oligodendrocyte glycoprotein fragment, a myelin basic protein fragment or a II type collagen fragment to give the fused polypeptide.