摘要:
Methods for inducing a population of T cells to proliferate by activating the population of T cells and stimulating an accessory molecule on the surface of the T cells with a ligand which binds the accessory molecule are described. T cell proliferation occurs in the absence of exogenous growth factors or accessory cells. T cell activation is accomplished by stimulating the T cell receptor (TCR)/CD3 complex or the CD2 surface protein. To induce proliferation of an activated population T cells, an accessory molecule on the surface of the T cells, such as CD28, is stimulated with a ligand which binds the accessory molecule. The T cell population expanded by the method of the invention can be genetically transduced and used for immunotherapy or can be used in methods of diagnosis.
摘要:
Stabilized forms of gp120 polypeptide, nucleic acids encoding these stabilized forms, vectors comprising these nucleic acids, and methods of using these polypeptides, nucleic acids, vectors and host cells are disclosed. Crystal structures and computer systems including atomic coordinates for stabilized forms of gp120, and gp120 with an extended V3 loop, and methods of using these structures and computer systems are also disclosed.
摘要:
The invention provides a method of inducing an immune response in a mammal. The method comprises administering to the mammal a non-subgroup C adenoviral vector comprising an adenoviral fiber protein having an amino acid sequence comprising about 80% or more identity to an amino acid sequence encoding a subgroup C adenoviral fiber protein. The adenoviral vector further comprises a nucleic acid sequence encoding an antigen which is expressed in the mammal to induce an immune response. The invention further comprises a method of producing an adenoviral vector, and a composition comprising a serotype 41 or a serotype 35 adenoviral vector and a carrier. The invention also provides an adenoviral vector comprising a nucleic acid sequence encoding an adenoviral pIX protein operably linked to a heterologous expression control sequence, as well as a method of enhancing the stability and/or packaging capacity of an adenoviral vector.
摘要:
The present invention relates to genetic vaccines for stimulating cellular and humoral immune responses in humans and other hosts, and, in particular, relates to recombinant viruses that express heterologous antigens of pathogenic viruses, in single dose form.
摘要:
Ebola virus vaccines comprising nucleic acid molecules encoding Ebola viral proteins are provided. In one embodiment, the nucleic acid molecule encodes the transmembrane form of the viral glycoprotein (GP). In another embodiment, the nucleic acid molecule encodes the secreted form of the viral glycoprotein (sGP). In yet another embodiment, the nucleic acid molecule encodes the viral nucleoprotein (NP). Methods for immunizing a subject against disease caused by infection with Ebola virus are also provided.
摘要:
The present invention is directed to a pharmaceutical composition, comprising a mammalian cell growth factor and a pharmaceutically acceptable carrier. The growth factor of the present invention is selected from the group comprising;(a) a protein having a molecular weight of about 14 kilodaltons and being functional to stimulate growth of both B and T lymphocytes;(b) a protein having an apparent molecular weight of about 50 kilodaltons and being functional to stimulate growth of B lymphocytes; and(c) a growth factor having an apparent mean molecular weight of about 45 kilodaltons and being funtional to stimulate growth of mast cells.
摘要:
A family of growth factors, methods of making and using such growth factors in in vivo treatment of living mammalian cells, and products incorporating such growth factors, are disclosed.The growth factors were isolated from the supernatant fluid obtained by incubation of inducer T-cells in the presence of a suitable antigen or mitogen. The growth factors disclosed include a 14 Kd polypeptide which stimulates growth of both T-cells and B-cells, a 50 Kd polypeptide which stimulates B-cells to multiply and secrete immunoglobulins, and a 45 Kd growth factor which stimulates secretion of immunoglobulins by B-cells and stimulates rapid growth of certain mast cells, stem cells and certain other types of cells.
摘要:
Antibody VRC01 represents a human immunoglobulin that neutralizes—˜90% of diverse HIV-1 isolates. To understand how such broadly neutralizing HIV-1 antibodies develop and recognize the viral envelope, we used X-ray crystallography and 454 pyrosequencing to characterize additional antibodies from HIV-1-infected individuals. Crystal structures revealed a convergent mode of binding of different antibodies to the same CD4-binding-site epitope. Antibody recognition was achieved through the evolution of complementary contact domains that were generated in diverse ways. Phylogenetic analysis of expressed heavy and light chains determined by deep sequencing revealed a common pathway of antibody heavy chain maturation confined to IGHV1-2*02 lineage that could pair with different light chains. The maturation pathway inferred by antibodyomics reveals that diverse antibodies evolve to a highly affinity-matured state to recognize an invariant viral structure, providing insight into the development and evolution of broadly neutralizing HIV-1 immunity.
摘要:
Stabilized forms of gp120 polypeptide, nucleic acids encoding these stabilized forms, vectors comprising these nucleic acids, and methods of using these polypeptides, nucleic acids, vectors and host cells are disclosed. Crystal structures and computer systems including atomic coordinates for stabilized forms of gp120, and gp120 with an extended V3 loop, and methods of using these structures and computer systems are also disclosed.
摘要:
The present invention relates to assays for the identification of compounds that inhibit assembly of NP, VP35, and VP24, or inhibit the glycosylation of NP, required for nucleocapsid formation, for use as anti-viral agents. The invention also relates to assays for the identification of compounds that block glycosylation of proteins having a glycosylation domain that is substantially homologous to a glycosylation domain of NP required for polymerization. The invention further relates to pseudoparticles for presentation of antigens or antigenic epitopes for immunogenic or vaccination purposes.