Featured Research

from universities, journals, and other organizations

Scientists unveil characteristic of HIV early in transmission

Date:
February 24, 2011
Source:
NIH/National Institute of Allergy and Infectious Diseases
Summary:
A new finding could help efforts to design vaccines and other prevention tools to block HIV in the early stages of sexual transmission, before infection takes hold. Researchers have helped explain genetic differences that can distinguish some early-transmitting HIVs -- viruses found in an infected individual within the first month after infection -- from forms of HIV isolated later in infection.

A new finding from scientists at the National Institutes of Health could help efforts to design vaccines and other prevention tools to block HIV in the early stages of sexual transmission, before infection takes hold. Researchers at the NIH National Institute of Allergy and Infectious Diseases have helped explain genetic differences that can distinguish some early-transmitting HIVs -- viruses found in an infected individual within the first month after infection -- from forms of HIV isolated later in infection.

Related Articles


These genetic features help HIV bind tightly to a molecule called integrin α4β7. According to the scientists, the capacity to bind tightly to α4β7 likely enhances the ability of certain HIV viruses to complete the many steps of sexual transmission and become the "founder" virus that establishes infection in an individual.

The study also sheds light on CD4+ T cells, the primary immune cell targeted by HIV. The authors previously reported that gp120, an HIV surface protein, can bind to integrin α4β7 via a receptor that may be present on the surface of the CD4+ T-cell. α4β7 helps direct HIV-infected CD4+ T cells into the gut, where the virus can then begin to replicate quickly. Given the new finding that certain early-transmitting isolates of HIV can have an affinity for α4β7, the scientists believe it is likely that CD4+ T cells with the α4β7 receptor play an important role in the sexual transmission of HIV.


Story Source:

The above story is based on materials provided by NIH/National Institute of Allergy and Infectious Diseases. Note: Materials may be edited for content and length.


Journal Reference:

  1. Nawaz et al. The genotype of early-transmitting HIV gp120s promotes α4β7 reactivity, revealing α4β7 /CD4 T cells as key targets in mucosal transmission. PloS Pathogens, 2011

Cite This Page:

NIH/National Institute of Allergy and Infectious Diseases. "Scientists unveil characteristic of HIV early in transmission." ScienceDaily. ScienceDaily, 24 February 2011. <www.sciencedaily.com/releases/2011/02/110224201903.htm>.
NIH/National Institute of Allergy and Infectious Diseases. (2011, February 24). Scientists unveil characteristic of HIV early in transmission. ScienceDaily. Retrieved April 18, 2015 from www.sciencedaily.com/releases/2011/02/110224201903.htm
NIH/National Institute of Allergy and Infectious Diseases. "Scientists unveil characteristic of HIV early in transmission." ScienceDaily. www.sciencedaily.com/releases/2011/02/110224201903.htm (accessed April 18, 2015).

Share This


More From ScienceDaily



More Health & Medicine News

Saturday, April 18, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Our Love Of Puppy Dog Eyes Explained By Science

Our Love Of Puppy Dog Eyes Explained By Science

Newsy (Apr. 17, 2015) Researchers found a spike in oxytocin occurs in both humans and dogs when they gaze into each other&apos;s eyes. Video provided by Newsy
Powered by NewsLook.com
Scientists Find Link Between Gestational Diabetes And Autism

Scientists Find Link Between Gestational Diabetes And Autism

Newsy (Apr. 17, 2015) Researchers who analyzed data from over 300,000 kids and their mothers say they&apos;ve found a link between gestational diabetes and autism. Video provided by Newsy
Powered by NewsLook.com
Video Messages Help Reassure Dementia Patients

Video Messages Help Reassure Dementia Patients

AP (Apr. 17, 2015) Family members are prerecording messages as part of a unique pilot program at the Hebrew Home in New York. The videos are trying to help victims of Alzheimer&apos;s disease and other forms of dementia break through the morning fog of forgetfulness. (April 17) Video provided by AP
Powered by NewsLook.com
Boy or Girl? Intersex Awareness Is on the Rise

Boy or Girl? Intersex Awareness Is on the Rise

AP (Apr. 17, 2015) At least 1 in 5,000 U.S. babies are born each year with intersex conditions _ ambiguous genitals because of genetic glitches or hormone problems. Secrecy and surgery are common. But some doctors and activists are trying to change things. (April 17) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins