摘要:
This disclosure relates to methods of using recombinant replication-deficient cytomegalovirus (CMV) to generate a long-term, repeatedly stimulated T cell-based immune response in a subject, for instance against a heterologous antigen expressed by the cytomegalovirus. It further relates to methods of using a recombinant replication deficient CMV as an anti-cancer immunogenic preparation.
摘要:
A global functional analysis of HCMV genes is performed by constructing virus gene-deletion mutants and examining their growth phenotypes in different natural HCMV host cells. This systematic analysis of the HCMV genome identified 45 viral ORFs essential for viral replication and characterizes of 115 growth-dispensable viral genes. Of particular interest is the finding that HCMV encodes genes (temperance factors) that repress its own replication on a cell type-specific basis. In addition to HCMV, pathogen temperance may be a strategy employed by other infectious agents to enhance their long-term survivability within their respective host population.
摘要:
This disclosure provides modified cytomegalovirus (CMV) gL proteins and complexes comprising gL proteins. The modified gL proteins remain intact and are able to form complexes with other CMV proteins.
摘要:
A global functional analysis of HCMV genes is performed by constructing virus gene-deletion mutants and examining their growth phenotypes in different natural HCMV host cells. This systematic analysis of the HCMV genome identified 45 viral ORFs essential for viral replication and characterizes of 115 growth-dispensable viral genes. Of particular interest is the finding that HCMV encodes genes (temperance factors) that repress its own replication on a cell type-specific basis. In addition to HCMV, pathogen temperance may be a strategy employed by other infectious agents to enhance their long-term survivability within their respective host population.
摘要:
Infection of human fibroblast cells with human cytomegalovirus (HCMV) causes down regulation of cell surface expression of MHC class I. The present invention is directed to a mutant with a 9-kb deletion in the S component of the HCMV genome (including open reading frames IRS1-US9 and US11) which failed to down regulate class I heavy chains. By examining the phenotypes of mutants with smaller deletions with this portion of the HCMV genome, a 7-kb region containing at least 9 open reading frames was shown to contain the genes required for reduction in heavy chain expression. Furthermore, it was determined that two subregions (A and B) of the 7-kb region each contained genes which were sufficient to cause heavy chain down regulation. In subregion B, the US11 gene product is involved. It encodes a endoglycosidase H-sensitive glycoprotein which is intracytoplasmic, similar to the adenovirus type 2 E3-19K glycoprotein which inhibits surface expression of class I heavy chains.
摘要:
A method of preparing a vaccine for immunization against a herpes virus comprising the steps of one of deleting, substituting, or modifying a UL148 gene and interfering with or modifying an expression of the UL148 gene. Wherefore, it is an object of the present invention to overcome the above mentioned shortcomings and drawbacks associated with the prior art The inventors observed that less extensively passaged HCMV strains that retain expression of gH/gL/UL128-131 can efficiently infect epithelial and endothelial cells.
摘要:
A recombinant vector containing infectious genome of human cytomegalovirus (HCMV) and being useful for the production of reconstituted HCMV virus retaining phenotypic characteristics of a clinical virus isolate including the ability to grow on endothelial cells and to induce microfusion is characterized in that it is obtainable by inserting DNA from a clinical isolate of HCMV virus into a bacterial cloning vehicle. Such vector can be used e.g., for production of reconstituted HCMV virus retaining the phenotypic characteristics of a parental clinical isolate and for studying genes and functions of genes of HCMV virus. A further aspect are mutant viruses and inter alia their use for studying aspects of infectivity of HCMV virus.
摘要:
The invention provides compositions containing modified cytomegalovirus, and methods of using the compositions. In various embodiments, the modifications include adding a heterologous sequence encoding a non-viral chemokine element and/or immunogenic polypeptide, and/or disabling a viral dissemination gene.
摘要:
Infection of human fibroblast cells with human cytomegalovirus (HCMV) causes down regulation of cell surface expression of MHC class I. The present invention is directed to a mutant with a 9-kb deletion in the S component of the HCMV genome (including open reading frames IRS1-US9 and US11) which failed to down regulate class I heavy chains. By examining the phenotypes of mutants with smaller deletions with this portion of the HCMV genome, a 7-kb region containing at least 9 open reading frames was shown to contain the genes required for reduction in heavy chain expression. Furthermore, it was determined that two subregions (A and B) of the 7-kb region each contained genes which were sufficient to cause heavy chain down regulation. In subregion B, the US11 gene product is involved. It encodes a endoglycosidase H-sensitive glycoprotein which is intracytoplasmic, similar to the adenovirus type 2 E3-19K glycoprotein which inhibits surface expression of class I heavy chains.
摘要:
A recombinant vector containing infectious genome of human cytomegalovirus (HCMV) and being useful for the production of reconstituted HCMV virus retaining phenotypic characteristics of a clinical virus isolate including the ability to grow on endothelial cells and to induce microfusion is characterized in that it is obtainable by inserting DNA from a clinical isolate of HCMV virus into a bacterial cloning vehicle. Such vector can be used e.g., for production of reconstituted HCMV virus retaining the phenotypic characteristics of a parental clinical isolate and for studying genes and functions of genes of HCMV virus. A further aspect are mutant viruses and inter alia their use for studying aspects of infectivity of HCMV virus.