Late last week, FDA worked with the United States Attorney to ask a court to seize the components of a product that involved the use
of vaccinia virus vaccine as part of a purported treatment for cancer that FDA believes created the potential for substantial risks to patients.
Over one month, 30 people with an advanced form of hepatocellular carcinoma — the most common type of liver cancer — received three doses of a genetically engineered version
of the vaccinia virus.
Not exact matches
Lederman, who says he's «obsessed» with Jenner and has been working on a biography
of the scientist for 20 years, is convinced that Jenner's original vaccine, now named
vaccinia, was derived from a
virus circulating in horses, not cows, as folklore has it.
In a conversation about one
of Evan's earlier
vaccinia papers, Lederman told Evans that he'd love to know whether horsepox still works as a vaccine, but that he had had trouble getting hold
of the
virus.
Protein chemist Michael Way, cell biologist Sally Cudmore, and their colleagues at the European Molecular Biology Laboratory in Heidelberg and at the Pasteur Institute in Paris have found that
vaccinia — a
virus used in smallpox vaccines — surfs through cells on piles
of actin, one
of the basic structural proteins in the cellular skeleton.
He wonders whether it's not
vaccinia, the
virus used to induce smallpox resistance, but some other component
of the vaccine that's prompting inflammation, perhaps bovine cells from the manufacturing process.
Geoffrey Smith and his team
of virologists at Imperial College London were curious about the
vaccinia virus, and set up a video microscope to watch how the
virus spreads through cells.
When the team tried to clone the heavy chain - only antibodies from three llamas, they could not get a set that would bind well to the several biothreats they desired to test — among them ricin, cholera toxin and
vaccinia (a surrogate
of smallpox
virus).
Using a light microscope, researchers at the Swiss Federal Institute
of Technology in Zürich watched fluorescently tagged
vaccinia virus — a more benign cousin
of smallpox
virus — migrate toward target cells.
Did you know, for example, that the
vaccinia virus is a member
of one
of the largest and most complex
of the vertebrate
viruses?
While looking carefully at the areas
of cell destruction induced by the
viruses — called plaques — he and colleagues noticed that
vaccinia spread four times faster than its replication cycle would allow.
Cell biologist Michael Way
of the London Research Institute agrees that other
viruses may also use the
vaccinia infection strategy.
When other
vaccinia viruses come knocking, long projections
of another protein, actin, shoot out from the cell membrane, causing the
virus to bounce off.
On March 3, 2007, a two - year - old boy suffering from severe eczema and an unusual, widespread rash was transferred from St. Catherine's Hospital, in East Chicago, IN, to the University
of Chicago's Comer Children's Hospital where he was diagnosed with eczema vaccinatum — a rare, severe, adverse reaction to the
vaccinia virus.
Differences and similarities in viral life cycle progression and host cell physiology after infection
of human dendritic cells with modified
vaccinia virus Ankara and
vaccinia virus.
The
vaccinia virus 13L early / intermediate promoter is cloned upstream
of the nef coding sequences.
Cytokine milieu
of atopic dermatitis skin subverts the innate immune response to
vaccinia virus.
The Pexa - Vec
virus was originally developed by Michael Mastrangelo, MD, and Edmund Lattime, PhD,
of Thomas Jefferson University in Philadelphia, who engineered the harmless
vaccinia virus to infect only cancer cells and other rapidly dividing cells, as well as to stimulate immune activity, in hopes
of boosting the immune response to tumors.
While at UConn, he researched improvements to the system for generating recombinant
vaccinia viruses in the laboratory
of Dr. Paulo Verardi.
To do this, a team led by Matthew Weitzman
of the University
of Pennsylvania crosslinked the host factors
of infected human cells with the DNA
of adenovirus, herpes simplex
virus and
vaccinia virus.
Agricola J, Munseri PJ, Nilsson C, Bakari M, Aboud S, Lyamuya EF, Tecleab T, Liakina V, Scarlatti G, Robb, ML, Earl PL, Moss B, Wahren B, Mhalu F, Ferrari G, Sandstrom E, Biberfeld G. Three - year durability
of immune responses induced by HIV - DNA and HIV - modified
vaccinia virus Ankara and effect
of a late HIV - MVA boost in Tanzanian volunteers.
Elucidating the essential role
of the A14 phosphoprotein in
vaccinia virus morphogenesis: construction and characterization
of a Tetracycline - inducible recombinant.
Temperature - sensitive mutants with lesions in the
vaccinia virus F10 kinase undergo arrest at the earliest stage
of virion morphogenesis.