Navigation Links
Researchers trace HIV evolution in North America
Date:4/25/2014

A study tracing the evolution of HIV in North America involving researchers at Simon Fraser University has 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.

"Much research has focused on how HIV adapts to antiviral drugswe wanted to investigate how HIV adapts to us, its human hosts, over time," says lead author Zabrina Brumme, an assistant professor in SFU's Faculty of Health Sciences.

The study, published today in PLOS Genetics, was led by Brumme's lab in collaboration with scientists at the BC Centre for Excellence in HIV/AIDS, UBC, and sites across the U.S. including Harvard University, the New York Blood Center and the San Francisco Department of Public Health.

"HIV adapts to the immune response in reproducible ways. In theory, this could be bad news for host immunityand vaccinesif such mutations were to spread in the population," says Brumme. "Just like transmitted drug resistance can compromise treatment success, transmitted immune escape mutations could erode our ability to naturally fight HIV."

Researchers characterized HIV sequences from patients dating from 1979, the beginning of the North American HIV epidemic, to the modern day.

The team reconstructed the epidemic's ancestral HIV sequence and from there, assessed the spread of immune escape mutations in the population.

"Overall, our results show that the virus is adapting very slowly in North America," says Brumme. "In parts of the world harder hit by HIV though, rates of adaptation could be higher."

The study ends with a message of hope, Brumme adds. "We already have the tools to curb HIV in the form of treatmentand we continue to advance towards a vaccine and a cure. Together, we can stop HIV/AIDS before the virus subverts host immunity through population-level adaptation."

Numerous SFU researchers contributed to the analysis, which required the careful recovery of viral RNA from historic specimens followed by laboratory culture. A trio of SFU graduate students, including health sciences student Laura Cotton, shared the lead author role.

"It was painstaking work," says Cotton, "but it was fascinating to study these isolates in the lab, knowing that they had played an important role in the history of HIV on our continent."
'/>"/>

Contact: Zabrina Brumme
zbrumme@sfu.ca
778-782-8872
Simon Fraser University
Source:Eurekalert

Related biology news :

1. UNC researchers link aging to cellular interactions that occur across generations
2. Researchers identify a mechanism linking bariatric surgery to health benefits
3. Dana-Farber researchers uncover link between Down syndrome and leukemia
4. Stanford researchers rethink natural habitat for wildlife
5. Researchers question published no-till soil organic carbon sequestration rates
6. Researchers: Obesity can amplify bone and muscle loss
7. Researchers track down cause of eye mobility disorder
8. Vanderbilt researchers discover how intestinal cells build nutrient-absorbing surface
9. New method isolates immune cells for researchers to study how they ward off oral diseases
10. Researchers describe 4 new species of killer sponges from the deep sea
11. Finding the switch: Researchers create roadmap for gene expression
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/11/2017)... NXT-ID, Inc. (NASDAQ:   NXTD ) ... appointment of independent Directors Mr. Robin D. Richards ... Directors, furthering the company,s corporate governance and expertise. ... Gino Pereira , Chief Executive ... their guidance and benefiting from their considerable expertise as we ...
(Date:4/5/2017)... 5, 2017 Today HYPR Corp. , ... server component of the HYPR platform is officially ... end-to-end security architecture that empowers biometric authentication across Fortune ... already secured over 15 million users across the financial ... connected home product suites and physical access represent a ...
(Date:4/3/2017)... 2017  Data captured by IsoCode, IsoPlexis ... a statistically significant association between the potency ... and objective response of cancer patients post-treatment. ... whether cancer patients will respond to CAR-T ... as to improve both pre-infusion potency testing and ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... ... October 11, 2017 , ... ... Andi Purple announced Dr. Suneel I. Sheikh, the co-founder, CEO and chief research ... Inc. has been selected for membership in ARCS Alumni Hall of Fame ...
(Date:10/11/2017)... (PRWEB) , ... October 11, 2017 , ... Personal eye wash is a basic first ... eye at a time. So which eye do you rinse first if a dangerous substance ... Plum Duo Eye Wash with its unique dual eye piece. , “Whether its ...
(Date:10/11/2017)... ... October 11, 2017 , ... ... will be hosting a Webinar titled, “Pathology is going digital. Is your lab ... digital pathology adoption best practices and how Proscia improves lab economics and realizes ...
(Date:10/11/2017)... LAGUNA HILLS, Calif. , Oct. 11, 2017 /PRNewswire/ ... London (ICR) and University of ... tool to risk-stratify patients with multiple myeloma (MM), in a ... . The University of Leeds is ... Myeloma UK, and ICR will perform the testing services to ...
Breaking Biology Technology: