New research that sheds light on the methods and machinery used by HIV to infect cells provides insight into the tricky virus that potentially could guide the development of a vaccine against the virus that causes AIDS, according to U.S. government and other scientists.
09 October 2014 | Reuters
Technologies that allow investigators, for the first time, to watch what they call the 'dance' of HIV proteins on the virus' surface, which may contribute to how the virus infects human immune cells, have been developed by scientists. The new technology platform opens new possibilities for devising an approach to prevent HIV infection, note researchers
09 October 2014 | Science Daily
We respond to infections in two fundamental ways. One is 'resistance,' where the body attacks the invading pathogen and reduces its numbers. Another, which is much less well understood, is 'tolerance,' where the body tries to minimize the damage done by the pathogen. A study using data from a large Swiss cohort of HIV-infected individuals gives us a glimpse into why some people cope with HIV better than others.
17 September 2014 | Science Daily
A family of proteins that helps viruses, such as HIV and Ebola, enter a cell also can block the release of those viruses. When HIV-1 or any virus infects a cell, it replicates and spreads to other cells. One type of cellular protein—T cell immunoglobulin and mucin domain, or TIM-1—has previously been shown to promote entry of some highly pathogenic viruses into host cells. Researchers have now discovered that the same protein possesses a unique ability to block the release of such viruses. The findings are published in the Proceedings of the National Academy of Sciences.
“This is a surprising finding that provides new insights into our understanding of not only HIV infection, but also that of Ebola and other viruses,” says Shan-Lu Liu, associate professor of molecular microbiology and immunology at University of Missouri.
26 August 2014 | Futurity
One of the most effective methods used by HIV to evade control is to hide from the immune system. B-cells are crucial for controlling new infections, producing specific antibodies to attack it, which coat the surface of infected cells and tag them for destruction. But according to a study from Duke Medicine, published in Cell Host & Microbe, when HIV enters and begins replicating in the gut, the reaction of B cells is ineffective because the virus is able to pose as a “good” bacterium. Its gp41 surface protein - which is displayed on the surface of infected cells - looks like surface proteins on the cells of friendly gut bacteria.
21 August 2014 | The Conversation UK
Normal microorganisms in the intestines appear to play a pivotal role in how the HIV virus foils a successful attack from the body’s immune system, according to new research. "Gut flora keeps us all healthy by helping the immune system develop, and by stimulating a group of immune cells that keep bacteria in check," said the study's senior author. "But this research shows that antibodies that react to bacteria also cross-react to the HIV envelope."
14 August 2014 | Science Daily
Our immune system contains CD8+ T cells which protect us from various diseases such as cancer and viruses. Some of them are specifically tasked with killing cells infected with the HIV virus – and researchers from Karolinska Institutet, together with international colleagues, have for the first time identified a key explanation for why these cells are unsuccessful in their task. In simple terms, the immune system's ignition keys have not been turned all the way to the start position, which would enable the CD8+ T cells to kill the cells infected with HIV.
19 July 2014 | Karolinska Institutet press release
"Popular" cells - could there really be such a thing? According to a new opinion paper published in PLoS Pathogens, the human body may contain cells that have more contact with other cells and could be "superspreaders" of the HIV virus.
11 June 2014 | HIV / AIDS News From Medical News Today
In a new study that traces the evolution of HIV in North America, researchers have found evidence that the virus is slowly adapting over time to its human hosts. However, this change is so gradual that it is unlikely to have an impact on vaccine design.
11 June 2014 | Science Daily
A kidney disease treatment successfully compensated for the effects of a leaking gut among monkeys infected with the simian version of HIV.
11 June 2014 | AIDSMeds