摘要:
The present invention is directed to methods of suppressing the virulence of one or more virulence antigenic factors of methicillin resistant Staphylococcus aureus (MRSA). Aspects of the invention include administering of an expression vector alone or in conjunction with a fusion protein. The expression vector has a transcription unit encoding a fusion protein composed of a virulence antigenic factor of MRSA attached through a linker to the aminoterminal end of the ecd CD40 ligand. The fusion protein is composed of a virulence antigenic factor of MRSA and CD40 ligand and has the ability to generate antibodies which prevents host cell infection by suppressing virulence functions of MRSA.
摘要:
Provided are expression vectors for generating an immune response to a mucin. The vectors comprise a transcription unit encoding a secretable polypeptide, the polypeptide comprising a secretory signal, a mucin antigen and CD40 ligand. Also provided are methods of generating an immune response against cells expressing a mucin by administering an effective amount of the vector. Further provided are methods of generating an immune response against cancer cells expressing a mucin in an individual by administering an effective amount of the vector. Still further provided are methods of overcoming anergy to a mucin self antigen by administering an effective amount of the vector.
摘要:
Provided are methods of selecting at least three domains of the malarial CSP protein for generating non-cross reacting neutralizing antibody immune responses to the malarial parasite which prevents an infection of a human being when bitten by a malaria infected mosquito. The method comprises priming an individual by administering a mixture of adenoviral expression vectors encoding fusion proteins or the fusion proteins themselves which comprises the malarial CSP antigen fragments linked to the extracellular domain of the CD40 ligand. The adenoviral expression vector comprises a transcription unit encoding a secretable fusion protein, the fusion protein containing selected malarial sporozoite CSP antigen fragments linked to the CD40 ligand in order to block the attachment to or infection of the human liver cell(s) by the malarial sporozoite.
摘要:
Provided are expression vectors for generating an immune response to a mucin. The vectors comprise a transcription unit encoding a secretable polypeptide, the polypeptide comprising a secretory signal, a mucin antigen and CD40 ligand. Also provided are methods of generating an immune response against cells expressing a mucin by administering an effective amount of the vector. Further provided are methods of generating an immune response against cancer cells expressing a mucin in an individual by administering an effective amount of the vector. Still further provided are methods of overcoming anergy to a mucin self antigen by administering an effective amount of the vector.
摘要:
A Tularemia vaccine proposes to induce antibodies which through their binding to the target proteins of the vaccine strategy will inactivate the proteins essential to mediating the secretory function of the pilus proteins of the “type IV pilus proteins” or Tfp proteins, thereby impairing the formation of the pilus proteins on the surface of the FT which are needed for binding and entry of the FT into macrophages, and will inhibit the secretion of several factors of FT which are necessary for the virulence of the FT, and which are missing in attenuated strains of FT used in current attenuate strain vaccination strategies. The vaccine may be a mixture of DNA plasmids encoding TAA/ecdCD4OL protein vaccines in which the TAA is comprised of fragments of the following Tularemia proteins: Tfp, pilA, pilC, pilT, and pilQ,
摘要:
Provided are methods of generating an immune response to any of various antigens including foreign antigens such as infectious agent antigens. In general, the method comprises administering an expression vector encoding a transcription unit encoding a secretable fusion protein, the fusion protein containing the foreign antigen and CD40 ligand and also administering the encoded fusion protein. In another approach, an immune response to the foreign antigen is elicited using the encoded fusion protein without administering the vector. The invention methods may be used to immunize an individual against an infectious agent such as influenza virus. Methods of obtaining an immune response in older individuals also is described.
摘要:
Provided are methods of selecting domains of the dengue hemorrhagic fever virus E protein for generating a neutralizing antibody immune response to the dengue hemorrhagic fever virus. The method comprises priming an individual by administering a mixture of expression vectors encoding fusion proteins or the fusion proteins themselves which comprises the DHFV E antigen fragment linked to the extracellular domain of the CD40 ligand. The expression vector comprises a transcription unit encoding a secretable fusion protein, the fusion protein containing the DHFV E antigen fragment linked to the CD40 ligand. The methods may be used to immunize an individual against all four strains of dengue hemorrhagic fever virus.
摘要:
The present invention is directed to novel compositions and methods against HSV (herpes simplex virus) 1 and 2. In brief, an epitope from a binding region of glycoprotein gD, important for binding or attachment of the HSV to the host cell, which is used to mediate the first essential function of infection, and three epitopes from binding regions of glycoprotein gB are used to mediate the second essential function of infection or the fusion of the HSV envelope with the cellular plasma membrane. Each of these epitopes is fused or linked with the extracellular domain of protein CD40L, to form a fusion protein, which fusion proteins are then combined in a mixture to form the inventive composition for acting against HSV 1 and 2.
摘要:
A combination of components to promote an innate and adaptive immune response comprising of a TAA/ecdCD40L vaccine and a complex between the CD1d receptor and an alpha galactosyl ceramide like glycolipid (AGCLGL), to activate NKT cells and activate the CD40 receptor on the DCs and increase the level of the adaptive immune response induced by the TAA/ecdCD40L vaccine to the TAA. The result and advantage of using both the TAA/ecdCD40L vaccine and the α-galactosylceramide-CD1d complex (or a related bacterial or other antigen related to α-galactosylceramide) to stimulate the immune response through the CD40L/CD40 axis on dendritic cells, is that the magnitude of the stimulation is robust and increased significantly more than additive—i.e. synergistically due to the interaction, cross-talk and/or cross-stimulation of the glycolipid-CD1d pathway and TAA/ecdCD40L pathway. As a result, a potent immune response is induced against lipid target antigens as well as protein target antigens.
摘要:
The present invention is directed to methods of suppressing the virulence of one or more virulence antigenic factors of methicillin resistant Staphylococcus aureus (MRSA). Aspects of the invention include administering of an expression vector alone or in conjunction with a fusion protein. The expression vector has a transcription unit encoding a fusion protein composed of a virulence antigenic factor of MRSA attached through a linker to the aminoterminal end of the ecd CD40 ligand. The fusion protein is composed of a virulence antigenic factor of MRSA and CD40 ligand and has the ability to generate antibodies which prevents host cell infection by suppressing virulence functions of MRSA.