摘要:
The present invention relates to analogues of peptides from lipopolysaccharide-binding protein (LBP) region whose primary sequence have been substituted at particular amino acid sites to obtain effective binding to, and neutralization of, lipopolysaccharide (LPS).
摘要:
The present invention relates to five synthetic peptides of pre-M/M protein of Dengue-2 virus, corresponding to amino acid sequences 3-31, 45-67, 57-92, 69-93 and 103-124. The anti-peptide immune response was evaluated in mice. Recombinant fusion proteins were also obtained, including regions of pre-M/M protein. The presence of B cell epitopes in both mice and humans was demonstrated in the pre-M/M protein peptides. Peptides 3-31 and 103-124 elicited neutralizing antibodies against the four serotypes of Dengue virus. Virus-specific proliferative responses were demonstrated in mice immunized with non-conjugated peptides 3-31 and 57-92. Mice immunized with conjugated peptides 3-31, 57-92, and 69-93 were protected when they were challenged with Dengue-2 virus. Thus, the presence of sequential epitopes in Pre-M/M protein of Dengue-2 virus was demonstrated, as well as their relevance in the immune response against this flavivirus.
摘要:
This invention describes a method for treating cancer by increasing the nuclear localization of the COMMD1 protein, which is associated with decreasing or blocking the proliferation of the cancer cell. The invention is also related to the use of agents that increase nuclear localization of the COMMD1 protein, in the manufacture of a medicament for cancer therapy. These agents can be peptides or proteins, among other compounds. The invention is also related to the optimization of a peptide, coming from the sequence HARIKPTFRRLKWKKYKGKFW, to increase the nuclear localization of the protein COMMD, and thus, to increase the antitumor effect of this peptide.
摘要:
Current invention is related to the molecular pharmacology branch particularly to a peptide belonging to the Interleukin-15 sequence (IL-15) which is able to inhibit IL-15 biological activity, analogues or mimetic of such peptides. In the current invention it is shown that the peptide inhibits both IL-15-induced T cells proliferation upon binding to the IL15 receptor a subunit (IL15Rα) and TNFα-mediated apoptosis.Besides, this invention is related to the use of this peptide in the treatment of several pathologies where aberrant IL-15 or IL-15Rα expression is associated to the disease progression.
摘要:
This invention describes a method for treating cancer by increasing the nuclear localization of the COMMD1 protein, which is associated with decreasing or blocking the proliferation of the cancer cell. The invention is also related to the use of agents that increase nuclear localization of the COMMD1 protein, in the manufacture of a medicament for cancer therapy. These agents can be peptides or proteins, among other compounds. The invention is also related to the optimization of a peptide, coming from the sequence HARIKPTFRRLKWKKYKGKFW, to increase the nuclear localization of the protein COMMD, and thus, to increase the antitumor effect of this peptide.
摘要:
This invention describes a method for treating cancer by increasing the nuclear localization of the COMMD1 protein, which is associated with decreasing or blocking the proliferation of the cancer cell. The invention is also related to the use of agents that increase nuclear localization of the COMMD1 protein, in the manufacture of a medicament for cancer therapy. These agents can be peptides or proteins, among other compounds. The invention is also related to the optimization of a peptide, coming from the sequence HARIKPTFRRLKWKKYKGKFW, to increase the nuclear localization of the protein COMMD, and thus, to increase the antitumor effect of this peptide.
摘要:
The present invention describes a method to inhibit replication of the human immunodeficiency virus (HIV) by negatively modulating or altering the cytoskeleton, more precisely the proteins forming the intermediate cytoskeletal filaments, wherein the said proteins are vimentin and/or keratin-10. The replication of the virus is inhibited in human cells by intervening in the structure of these proteins. The present invention is also related to the use of agents, which comprise peptides and/or interfering RNA and/or lipidic compounds, said agents producing a negative modulation or alteration of the cytoskeleton to prevent or to treat the HIV infection. The invention provides means and methods for altering the cytoskeleton/filament structure of cells, as a result of which the infection of human cells by HIV is disturbed and can even be completely inhibited. The cytoskeleton is altered by reducing the amount of vimentin and/or keratin (e.g. by transcriptional control using interfering RNA) or by using peptides that disrupt the cytoskeleton.
摘要:
A pharmaceutical composition using natural gonadotropin-releasing hormone (GnRH), and/or some of its mimetic peptides, indistinctly bound by its amino or carboxyl extremes to a carrier molecule; in one case by its carboxyl extreme and in the other case by the amino terminal extreme, thus eliciting a faster and more potent immunological response against the endogenous GnRH hormone. This finally leads to the ablation of the GnRH and consequently of the rest of the involved hormones in the stream GnRH/LH-FSH/Testosterone-(estrogens). An advantage of this formulation consists on facilitating the exposition to the immune system of a greater number of epitopes of the GnRH or its mimetics, minimizing thus the steric hindrance produced by the carriers. This invention has a direct application in the castration of pets and animals of economic interest, in the control of human fertility as well as in the treatment of hormone-sensitive tumors, such as that of the prostate, the breast, ovary, the endometry, testicles, hypophysis, salivary glands and other kinds of human tumors.
摘要:
A pharmaceutical composition using natural gonadotropin-releasing hormone (GnRH), and/or some of its mimetic peptides, indistinctly bound by its amino or carboxyl extremes to a carrier molecule; in one case by its carboxyl extreme and in the other case by the amino terminal extreme, thus eliciting a faster and more potent immunological response against the endogenous GnRH hormone. This finally leads to the ablation of the GnRH and consequently of the rest of the involved hormones in the stream GnRH/LH-FSH/Testosterone-(estrogens). An advantage of this formulation consists on facilitating the exposition to the immune system of a greater number of epitopes of the GnRH or its mimetics, minimizing thus the steric hindrance produced by the carriers. This invention has a direct application in the castration of pets and animals of economic interest, in the control of human fertility as well as in the treatment of hormone-sensitive tumors, such as that of the prostate, the breast, ovary, the endometry, testicles, hypophysis, salivary glands and other kinds of human tumors.
摘要:
The present invention is related to the field of molecular immunology, particularly to a peptide derived from the sequence of interleukine-15 (IL-15), wherein said peptide was optimized to inhibit the biological activity of this molecule. In the present invention, it is shown that this peptide inhibits IL-15-induced T cell proliferation, Tumor Necrosis Factor α (TNFα) induction and the expression of IL-8 and IL-6 by the IL-15 receptor α subunit (IL-15Rα), all these effects mediated by the binding of the peptide to the IL-15Rα. The invention is also related to the use of the peptide to treat pathologies where the abnormal expression of IL-15 or IL-15Rα is related to the course of the disease, such as rheumatoid arthritis (RA) and prostate cancer.