News / Africa

Research Shedding Light on Role of Anti-bodies in Fight against HIV/AIDS

Multimedia

Audio
TEXT SIZE - +
Joe DeCapua

Over the last six months, scientists have revealed they’ve learned a lot more about human anti-bodies, which could lead to a better designed AIDS vaccine candidate.

Anti-bodies are proteins that fight off infection from viruses, bacteria and other foreign objects.  However, they’ve not been able to mount enough of a response to stop HIV, the virus that causes AIDS, in its tracks.

“Vaccine development historically relies on anti-body responses.  Vaccines generally are meant to boost the immune response and to help the body fight off a coming attack,” says Mitchell Warren, head of AVAC, AIDS Vaccine Advocacy Coalition.

He describes a strong anti-body response as “the secret of success for most vaccines.  So it’s been very much the target for AIDS vaccine research and development.”

Looking for HIV weaknesses

“A lot of the research has been focusing on the actual structure,” he says, “of the virus itself.  And as we learn more about how the virus is structured, that may help us unlock how to develop a vaccine.”

Some of the scientific techniques being used to study anti-bodies and HIV didn’t exist 10 or 15 years ago.

“So what we’re seeing now are the beginnings of the fruits of technological labor applied to the AIDS vaccine effort.  And it’s really just a beginning.  We need to see a great deal more of that done to really unlock the promise of science,” he says.

While anti-bodies respond quickly to many diseases, the immune response to HIV is not quick enough.

“HIV is highly mutating.  So it’s constantly changing to evade the immune system, which makes it very hard to lock down the immune response and a vaccine to help boost that,” he says.

Taking a closer look

Early anti-body research regarding HIV concentrated on the outer layers of virus.  But over the last six months scientists have reported possible new targets in different parts of HIV.

“We don’t know exactly what to make of this and how to apply that to a vaccine yet, but the work now is to try to take advantage of these new targets,” Warren says.

If indeed antibodies responded more quickly against HIV, could they defeat it?

“It hasn’t yet,” he says.  However, there are people infected with HIV whose immune systems are able to fend off the virus without the help of anti-retroviral drugs.  Similar findings are found in monkeys infected with SIV, Simian Immunodeficiency Virus.

“We’re really at a point right now in AIDS vaccine research – more than ever before I think – where it’s a question of how do you translate these…findings…into vaccine design and vaccine development.  And that’s really the next big step forward,” he says.

He says things have changed in the last six months.

“We’re in a new world in AIDS vaccine research.  Does it mean we have a vaccine around the corner?  No.  But it does mean we have more kind of bricks in the foundation on which we need to build a vaccine than we’ve ever had,” says the AVAC head.

Last year, a study of an AIDS vaccine candidate in Thailand indicated that it is possible to control HIV with a vaccine.

You May Like

Abuja Blast Impacts Lives, Livelihoods

Officials say they are looking at ways to help bombing victims and boosting security More

Cambodia Technology Adviser Criticizes Cybercrime Draft Law

Phu Leewood says current criminal code can be used to prosecute offenders and that there is no need for a separate law More

Photogallery A Year Later, Boston Remembers Deadly Marathon Bombings

City pauses to honor victims and salute emergency workers who came to their assistance in frantic moments after blasts More

This forum has been closed.
Comments
     
There are no comments in this forum. Be first and add one

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
Google Buys Drone Companyi
|| 0:00:00
...
 
🔇
X
George Putic
April 15, 2014
In its latest purchase of high-tech companies, Google has acquired a manufacturer of solar-powered drones that can stay in the air almost indefinitely, relaying broadband Internet connection to remote areas. It is seen as yet another step in the U.S. based Web giant’s bid to bring Internet to the whole world. VOA’s George Putic reports.
Video

Video Google Buys Drone Company

In its latest purchase of high-tech companies, Google has acquired a manufacturer of solar-powered drones that can stay in the air almost indefinitely, relaying broadband Internet connection to remote areas. It is seen as yet another step in the U.S. based Web giant’s bid to bring Internet to the whole world. VOA’s George Putic reports.
Video

Video Ray Bonneville Sings the Blues and More on New CD

Singer/songwriter Ray Bonneville has released a new CD called “Easy Gone” with music that reflects his musical and personal journey from French-speaking Canada to his current home in Austin,Texas. The eclectic artist’s fan base extends from Texas to various parts of North America and Europe. VOA’s Greg Flakus reports from Austin.
Video

Video Millions Labor in Pakistan's Informal Economy

The World Bank says that in Pakistan, roughly 70 percent work in the so-called informal sector, a part of the economy that is unregulated and untaxed. VOA's Sharon Behn reports from Islamabad on how the informal sector impact's the Pakistani economy.
Video

Video Passover Celebrates Liberation from Bondage

Jewish people around the world are celebrating Passover, a commemoration of their liberation from slavery in Egypt more than 3,300 years ago. According to scripture, God helped the Jews, led by Moses, escape bondage in Egypt and cross the Red Sea into the desert. Zlatica Hoke reports that the story of the Jewish Exodus resonates with other people trying to escape slave-like conditions.
Video

Video Police Pursue Hate Crime Charges Against Kansas Shooting Suspect

Prosecutors are sifting through the evidence in the wake of Sunday’s shootings in a suburb of Kansas City, Missouri that left three people dead. A suspect in the shootings taken into custody is a white supremacist. As VOA’s Kane Farabaugh reports, he was well-known to law enforcement agencies and human rights groups alike.
Video

Video In Eastern Ukraine, Pro-unity Activists Emerge from Shadows

Amid the pro-Russian uprisings in eastern Ukraine, there is a large body of activists who support Ukrainian unity and reject Russian intervention. Their activities have remained largely underground, but they are preparing to take on their pro-Moscow opponents, as Henry Ridgwell reports from the eastern city of Donetsk.
Video

Video Basket Maker’s Skills Have World Reach

A prestigious craft show in the U.S. capital offers one-of-a-kind creations by more than 120 artists working in a variety of media. As VOA’s Julie Taboh reports from Washington, one artist lucky enough to be selected says sharing her skills with women overseas is just as significant.
Video

Video UN Report Urges Speedier Action to Avoid Climate Disaster

A new United Nations report says the world must switch from fossil fuels to cleaner energy sources to control the effects of climate change. The Intergovernmental Panel on Climate Change released the report (Sunday) following a meeting of scientists and government representatives in Berlin. The comprehensive review follows two recent IPCC reports that detail the certainty of climate change, its impacts and in this most recent report what to do about it. VOA’s Rosanne Skirble has the details.
AppleAndroid