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Adenoviral infections are typically acute, self-limiting, and not associated with death. However, we present the genomic and bioinformatics analysis of a novel recombinant human adenovirus (HAdV-D56) isolated in France that caused a rare neonatal fatality, and keratoconjunctivitis in three health care workers who cared for the neonate. Whole genome alignments revealed the expected diversity in the...
In human adenoviruses (HAdV), 240 copies of the 14.3-kDa minor capsid protein IX stabilize the capsid. Three N-terminal domains of protein IX form triskelions between hexon capsomers. The C-terminal domains of four protein IX monomers associate near the facet periphery. The precise biological role of protein IX remains enigmatic. Here we show that deletion of the protein IX gene from a HAdV-5 vector...
Human parvovirus B19 (B19V) DNA is highly prevalent in endothelial cells lining up intramyocardial arterioles and postcapillary venules of patients with chronic myocarditis and cardiomyopathies. We addressed the question of a possible stimulation of B19V gene expression in endothelial cells by infection with adenoviruses. Adenovirus infection led to a strong augmentation of B19V structural and nonstructural...
E1-deleted adenovirus (FG Ad) transducing vectors are limited for use in vivo by their induction of strong innate and adaptive inflammatory responses. We have examined the contribution of the transgene cassette, particularly the foreign promoter driving transgene expression, in the induction of innate inflammation using a mouse ear model in which swelling is measured as a sensitive surrogate marker...
Adenovirus serotype (Ad5) is the most studied Ad. Ad1, 2, and 6 are also members of species C Ad and are presumed to have biologies similar to Ad5. In this work, we have compared the ability of Ad1, 2, 5, and 6 to infect liver and muscle after intravenous and intramuscular injection. We found that Ad6 was surprisingly the most potent at liver gene delivery and that Ad1 and Ad2 were markedly weaker...
Adenoviruses with deletion of E1b have been used in clinical trials to treat cancers that are resistant to conventional therapies. The efficacy of viral replication within cancer cells determines the results of oncolytic therapy, which remains poorly understood and requires further improvement. In this report, we show that adenoviruses induce autophagy by increasing the conversion of LC3-I to LC3-II...
The E1B transcription unit of human adenovirus encodes at least five different proteins generated by alternative splicing of a common E1B precursor mRNA. E1B-156R, -93R and -84R contain individual carboxy termini but share a common amino terminus. To acquire data on the structure of the amino terminus we performed biophysical analyses on E1B-93R. We show that E1B-93R is mostly unstructured and fulfills...
We used Cre/loxP recombination to swap targeting ligands present on the adenoviral capsid protein IX (pIX). A loxP-flanked sequence encoding poly-lysine (pK—binds heparan sulfate proteoglycans) was engineered onto the 3′-terminus of pIX, and the resulting fusion protein allowed for routine virus propagation. Growth of this virus on Cre-expressing cells removed the pK coding sequence, generating virus...
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