The entry of enveloped viruses into cells begins when the membrane that surrounds these virus particles fuse with a cell membrane. The process of virus-cell fusion must be tightly regulated, to make sure it happens in the right cells. The fusion activity of measles viruses isolated from the brains of AIDS patients is not properly regulated, …
On episode #324 of the science show This Week in Virology, Lee joins the TWiV team to discuss the value of post-doctoral training, and how a cellular microRNA assists in the replication of hepatitis C virus. You can find TWiV #324 at www.microbe.tv/twiv.
I have always had a problem with the use of the word transfection to mean anything other than the introduction of viral DNA into cells (illustrated for poliovirus). An examination of the origins of the word suggests that such use might be acceptable. The introduction of foreign DNA into cells is called DNA-mediated transformation to distinguish …
Jason Roberts, a virologist at the Victorian Infectious Disease Reference Laboratory in Melbourne, Australia, creates three-dimensional simulations of viruses showing how the molecules that make up the capsid and genome might move in very short periods of time. I visited Jason in his laboratory at the newly constructed Peter Doherty Institute, to learn how he develops …
On episode #323 of the science show This Week in Virology, the family TWiVidae discuss changes in the human fecal virome associated with Crohn’s disease and ulcerative colitis. You can find TWiV #323 at www.microbe.tv/twiv.
The human prion disease, Creutzfeld-Jacob, is diagnosed by a variety of criteria, including clinical features, electroencephalograms, and magnetic resonance imaging. Until recently there was no non-invasive assay to detect PrPSc, the only specific marker for the disease. This challenge has been overcome using amplification procedures to detect Creutzfeldt-Jakob prions in nasal brushings and in urine. These …
