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An unexpected link between coronavirus replication and protein secretion in infected cells
June 13, 2008Coronavirus replication is critically linked to two factors within the early secretory pathway, according to new findings by a team of Dutch researchers that are published June 13th in the open-access journal PLoS Pathogens.
Coronaviruses, a group including the well-known SARS virus, are the causative agents of many respiratory and enteric infections in humans and animals. As with all viruses, virtually every step of their infection cycle depends on host cellular factors. As the first, most crucial step after their penetration into cells, coronaviruses assemble huge RNA replication "factory" complexes in association with characteristic, newly induced double membrane vesicles. The cellular pathways hijacked by these plus-strand RNA viruses to create these "factories" have thus far not been elucidated.
The researchers conclude that "an intimate association exists between the early secretory pathway and MHV replication." They speculate that, while GBF1 and ARF1 are not involved in the formation of the viral replication structures, they probably play a key role in their maturation or functioning. As this work was limited to the mouse hepatitis coronavirus, an interesting next step would be to study the importance of GBF1 and ARF1 in the replication of other coronaviruses.
http://www.plospathogens.org/doi/ppat.1000088
Public Library of Science
Coronavirus Current Events and Coronavirus News RSSWill genomics help prevent the next pandemic?
This week, the Public Library of Science, an open-access publisher, presents the "Genomics of Emerging Infectious Disease," a collection of essays, perspectives, and reviews that explores how genomics-with all its associated tools and techniques-can provide insights into our understanding of emerging infectious disease.
Protein from algae shows promise for stopping SARS
A protein from algae may have what it takes to stop Severe Acute Respiratory Syndrome (SARS) infections, according to new research.
Researchers recreate SARS virus, open door for potential defenses against future strains
Researchers at the University of North Carolina at Chapel Hill and Vanderbilt University Medical Center have synthetically reconstructed the bat variant of the SARS coronavirus (CoV) that caused the SARS epidemic of 2003.
Synthetic virus supports a bat origin for SARS
SARS - severe acute respiratory syndrome - alarmed the world five years ago as the first global pandemic of the 21st century. The coronavirus (SARS-CoV) that sickened more than 8,000 people - and killed nearly 800 of them - may have originated in bats, but the actual animal source is not known.
Viruses hitch a ride in the cell
Viruses can travel around cells they infect by hitching a ride on a microscopic transport system, according to new research. Cells are exposed to foreign DNA and RNA and it is understood that some of this genetic material can be integrated into the host genome. Using modern microscopic techniques, scientists have been able to see how virus DNA is transported in the cell.
New Clorox disinfectant is EPA registered to kill both known types of MRSA
While MRSA has been an issue in healthcare settings for years, CA-MRSA outbreaks in the community have been on the rise, with the greatest risk in community settings such as fitness clubs, in sports teams, at schools and daycare centers.
Chips could speed up detection of livestock viruses
Some of the worst threats to farm workers and farm animals such as bird flu, foot-and-mouth disease and other emerging viruses could soon be quickly identified by using a simple screening chip developed by scientists from the Institute for Animal Health, scientists will hear today (Monday 31 March 2008) at the Society for General Microbiology's 162nd meeting being held this week at the Edinburgh International Conference Centre.
Scientists confirm new virus responsible for deaths of transplant recipients in Australia
In the first application of high throughput DNA sequencing technology to investigate an infectious disease outbreak, scientists from Columbia University Mailman School of Public Health, the Victorian Infectious Diseases Reference Laboratory (VIRDL) in Melbourne, Australia, the Centers for Disease Control and 454 Life Sciences link the discovery of a new arenavirus to the deaths of three transplant recipients who received organs from a single donor in Victoria, Australia in April 2007.
Scientists confirm new virus responsible for deaths of transplant recipients in Australia
In the first application of high throughput DNA sequencing technology to investigate an infectious disease outbreak, scientists from Columbia University Mailman School of Public Health, the Victorian Infectious Diseases Reference Laboratory (VIRDL) in Melbourne, Australia, the Centers for Disease Control and 454 Life Sciences link the discovery of a new arenavirus to the deaths of three transplant recipients who received organs from a single donor in Victoria, Australia in April 2007.
Discovery may help defang viruses
Researchers may be able to tinker with a single amino acid of an enzyme that helps viruses multiply to render them harmless, according to molecular biologists who say the discovery could pave the way for a fast and cheap method of making vaccines.
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