摘要:
Described herein are dengue virus E-glycoprotein polypeptides containing mutations that eliminate immunodominant cross-reactive epitopes associated with immune enhancement. The disclosed dengue virus E-glycoproteins optionally further include mutations that introduce a strong CD4 T cell epitope. The disclosed E-glycoprotein polypeptides, or nucleic acid molecules encoding the polypeptides, can be used, for example, in monovalent or tetravalent vaccines against dengue virus. The dengue virus E-glycoprotein polypeptides have amino acid substitutions at residues corresponding to position 106, 107, 310 and 311, and either position 364 or position 389 of dengue serotype 1 (DENV-1) E-glycoprotein. The provided E-glycoprotein polypeptides optionally further include mutations corresponding to positions 468, 478, 482 and 487 of DENV-1 E-glycoprotein.
摘要:
The invention relates to a dengue virus tetravalent vaccine containing a common 30 nucleotide deletion (Δ30) in the 3'-untranslated region of the genome of dengue virus serotypes 1, 2, 3, and 4, or antigenic chimeric dengue viruses of serotypes 1, 2, 3, and 4.
摘要:
Methods for preparing complex multivalent immunogenic conjugates that include simultaneously reacting a plurality or immunogenic-distinct polysaccharides with at least one protein to make the complex multivalent immunogenic conjugates. The simultaneous reaction involves reaction of a hydrazide group on one reactant with an aldehyde or cyanate ester group on the other reactant.
摘要:
Amido compounds are disclosed that have a formula represented by the following:
and wherein n1, n2, R 1a , R 1b , R 2 , R 3 , R 4 , R 5 , and R 6 are as described herein. The compounds may be prepared as pharmaceutical compositions, and may be used for the prevention and treatment of a variety of conditions in mammals including humans, including by way of non-limiting example, inflammatory conditions, autoimmune disorders, cancer, and graft-versus-host disease.
摘要:
Compositions and processes are provided for the robust detection of hepatitis C virus in a sample. Compositions include amino acid sequences of HCV core region including or exclusive to residues 14-31 or 50-90 of the HCV core protein. Also provided are processes of detecting HCV in a sample whereby the provided peptides are optionally used alone or in conjunction with antibodies that do not recognize the peptides so that detection is independent of seroconversion in a subject. Using the compositions and processes, HCV can be detected in a sample prior to or following seroconversion leading to robust HCV detection and diagnosis.
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.