摘要:
The present invention relates to detoxified and immunologically active proteins (“mutant LTs”) having mutated amino acid sequences of heat-labile enterotoxin of E. coli, DNA sequences encoding the mutant LTs, recombinant expression vectors comprising the DNAs, recombinant microorganisms transformed with the recombinant expression vectors, process for preparing the mutant LTs and pharmaceutical application of the said protein as immunogenic antigens for vaccination and as adjuvants for anti-body production. In contrast to wild-type LT, the mutant LTs did not induce any toxic activities. The mutant LTs elicited high and comparable levels of anti-LT antibodies when delivered either intragastrically or intranasally, inducing systemic and local responses in serum and fecal extracts. Thus, they might be useful for the development of a novel diarrheal vaccine in humans and animals. In addition, the antibody production ability using mutant LTs as an adjuvant may be effective for prevention and treatment of various diseases.
摘要:
The present invention relates to an expression vector for animal cells. Specifically, the present invention relates to an expression vector, pMS vector, pSG vector and pMSG vector, including the human β-globin 5′ MAR complementary sequence or/and the transcription termination site of the gastrin gene. An expression system using an expression vector of the present invention can successfully produce recombinant proteins in various animals cells and recombinant protein having a unique structure and function.
摘要:
The sequences of a pair of human proteins, trichohyalin and transglutaminase-3, in addition to the sequence of the mouse transglutaminase-3 protein, have been discovered. The enzyme transglutaminase-3 is used to cross-link the structural protein trichohyalin in order to form a gel.
摘要:
The present application discloses a therapeutic antimicrobial composition comprising mucocidin antimicrobial peptides or analogue or fragments thereof having antimicrobial activity.
摘要:
The present application discloses a therapeutic antimicrobial composition comprising mucocidin antimicrobial peptides or analogue or fragments thereof having antimicrobial activity.
摘要:
The present invention provides a novel angiogenesis inhibitor, LK68 whose amino acid sequence is identical with the human apolipoprotein (a) kringle domains IV36, IV37 and V38, a cDNA sequence encoding the LK68, a recombinant expression vector comprising the cDNA, a recombinant microorganism transformed with the recombinant expression vector and a novel use of the LK68 as an anticancer agent and a method for treating angiogenesis-mediated disease. LK68, LK6, LK7 and LK8 exhibit inhibitory activities on the cultured endothelial cell proliferation as well as on the endothelial cell migration. LK68 and its single kringles also inhibit the normal development of capillaries in the chick embryo chorioallantoic membrane (CAM). It was also showed that systemic administration of LK68 causes the inhibition of primary tumor growth, which is correlated with a suppression of tumor-induced angiogenesis. Accordingly, LK68 protein, its single kringles or their functional equivalents may be applied for the development of a potent anti-cancer agent, which is highly effective for angiogenesis-mediated diseases covering cancer, rheumatoid arthritis, psoriasis, ocular angiogenic disease, etc.
摘要:
The present invention relates to gene and peptide sequences of a diabetes-specific endogenous retrovirus which is derived from type 1 diabetes patients. In particular, the present invention relates to a whole genome of the diabetes-specific variant of endogenous retrovirus (ERV-9) purified from pancreatic tissues of type 1 diabetes (insulin-dependent diabetes mellitus [IDDM]) patients and its genes and peptide and their sequences, which can be used as a diagnosing reagent for type 1 diabetes and as an immunogen. The diabetes-specific retrovirus expressed exclusively in pancreatic beta cells was purified from deceased type 1 diabetes patients. Subsequently, the retroviral gene sequences were determined, and by analyzing the amino acid sequence of the peptide deduced from the gene, 21 domains of the peptide having hydrophilicity and immuno-dominancy were identified. Therefore, the variant gene of the endogenous retrovirus and the peptide deduced from the gene can be effectively used as a diagnosing reagent of autoimmune-antibody for type 1 diabetes and as a vaccine for the variant ERV-9 related diseases.
摘要:
The sequences of a pair of human proteins, trichohyalin and transglutaminase-3, in addition to the sequence of the mouse transglutaminase-3 protein, have been discovered. The enzyme transglutaminase-3 is used to cross-link the structural protein trichohyalin in order to form a gel.
摘要:
The present invention provides a novel angiogenesis inhibitor, LK68 whose amino acid sequence is identical with the human apolipoprotein (a) kringle domains IV36, IV37 and V38, a cDNA sequence encoding the LK68, a recombinant expression vector comprising the cDNA, a recombinant microorganism transformed with the recombinant expression vector and a novel use of the LK68 as an anticancer agent and a method for treating angiogenesis-mediated disease. LK68, LK6, LK7 and LK8 exhibit inhibitory activities on the cultured endothelial cell proliferation as well as on the endothelial cell migration. LK68 and its single kringles also inhibit the normal development of capillaries in the chick embryo chorioallantoic membrane (CAM). It was also showed that systemic administration of LK68 causes the inhibition of primary tumor growth, which is correlated with a suppression of tumor-induced angiogenesis. Accordingly, LK68 protein, its single kringles or their functional equivalents may be applied for the development of a potent anti-cancer agent, which is highly effective for angiogenesis-mediated diseases covering cancer, rheumatoid arthritis, psoriasis, ocular angiogenic disease, etc.
摘要:
The present invention relates to a variant of Lkn-1(shLkn-1) with enhanced biological activity, which is a truncated form of Lkn-1, a process for preparing a recombinant shLkn-1 by employing expression vector therefor and pharmaceutical application of the said protein. shLkn-1 is generated by missing 26 amino acid residues from the amino terminus of Lkn-1 to contain 66 amino acids. Recombinant shLkn-1 inhibits colony formation and cell proliferation in vivo, which suggests that it can be used as a potential drug for the antibody production, the treatment during HIV-1 infection, the protection of bone marrow stem cells during chemotherapy or radiotherapy, and the inhibition of leukemia.