We have just completed lecture #13 in my Columbia University virology course, which means that we are now at the halfway mark. In the first eleven lectures we covered basic aspects of viral replication in cell culture, including virus entry into cells, genome replication, and assembly. The remainder of the course is concerned with viral …
Integration of retroviral DNA into the cellular genome is essential for the production of new infectious particles. A strong argument that the novel human retrovirus XMRV is not a laboratory contaminant is the finding that viral DNA is integrated in chromosomal DNA of prostate tumors. Nucleotide sequence analyses of 14 integration sites in prostate tumor DNAs …
From the New York Times: Dr. Edwin D. Kilbourne, a medical researcher who figured out how to outwit fast-evolving flu germs, developing a new vaccine each year by intermingling genes of different disease strains, died Monday in Branford, Conn. He was 90. I’m saddened by Dr. Kilbourne’s passing – he was the Chairman of the Department …
The first detailed study of infection of nonhuman primates with the retrovirus XMRV reveals that the virus establishes a persistent infection characterized by infection of multiple tissues. Viremia (virus in the blood) is low and transient, with proviral DNA detectable in blood lymphocytes. The results show that the Rhesus macaque can be used to study …
A type of human encephalitis – an infection of the brain – has been known to affect the indigenous people living in the Sakha Republic of Russia since the mid-1800s. The available clinical and epidemiological evidence suggests that the disease is caused by a pathogen, but proving this has been difficult. The disease is called …
Excellent description by Jonah Lehrer in “The Truth Wears Off” (The New Yorker) on the importance of confirming experimental findings in different laboratories: Before the effectiveness of a drug can be confirmed, it must be tested and tested again. Different scientists in different labs need to repeat the protocols and publish their results. The test …
