Featured Research

from universities, journals, and other organizations

Single-dose HIV DNA vaccine induces long-lasting immune response in monkeys

Date:
February 26, 2010
Source:
American Society for Microbiology
Summary:
For the first time researchers from the U.S. and abroad have shown a single-dose HIV DNA vaccine can induce a long-lasting HIV-specific immune response in nonhuman primates, a discovery that could prove significant in the development of HIV vaccines.

For the first time researchers from the U.S. and abroad have shown a single-dose HIV DNA vaccine can induce a long-lasting HIV-specific immune response in nonhuman primates, a discovery that could prove significant in the development of HIV vaccines.

They detail their findings in the February 2010 issue of the Journal of Virology.

HIV is persistently spreading at epidemic rates throughout the world emphasizing the need for a vaccine that can substantially reduce viral loads and minimize transmission. History shows vaccines to be the most effective strategy against pandemic infectious diseases such as smallpox, polio, measles and yellow fever, however, the control of HIV not only relies on the production of neutralizing antibodies, but also the development of high frequency, broadly targeted T-cell responses specific to the virus. To date live-attenuated simian immunodeficiency virus (SIV)/HIV vaccines have prompted the most significant immune response against AIDS in a nonhuman primate model, but risk of redeveloping pathogenic forms makes them ineligible for human use.

DNA-based vaccines have become more preferable in controlling infectious diseases due to their safety and ability to induce both humoral and T-cell immune responses. In a previous study the researchers successfully induced long-lasting and potent HIV-specific immune responses in mice following immunization with a single-dose SHIV DNA-based vaccine. In this study rhesus macaques were immunized with a single high dose of the SHIV DNA-based vaccine and monitored for vaccine-induced immune responses. Results showed that all immunized monkeys developed broad HIV-specific T-cell immune responses that persisted for months. Additionally, an unusual reemergence in the blood following an initial decline and in the absence of antibody responses was noted.

"Our comprehensive analysis demonstrated for the first time the capacity of a single high dose of HIV DNA vaccine alone to induce long-lasting and polyfunctional T-cell responses in the nonhuman primate model, bringing new insights for the design of future HIV vaccines," say the researchers.


Story Source:

The above story is based on materials provided by American Society for Microbiology. Note: Materials may be edited for content and length.


Journal Reference:

  1. G. Arrode-Brusés, D. Sheffer, R. Hedge, S. Dhillon, Z. Liu, F. Villinger, O. Narayan, Y. Chebloune. Characterization of T-Cell Responses in Macaques Immunized with a Single Dose of HIV DNA Vaccine. Journal of Virology, 2010; 84 (3): 1243 DOI: 10.1128/JVI.01846-09

Cite This Page:

American Society for Microbiology. "Single-dose HIV DNA vaccine induces long-lasting immune response in monkeys." ScienceDaily. ScienceDaily, 26 February 2010. <www.sciencedaily.com/releases/2010/02/100224171854.htm>.
American Society for Microbiology. (2010, February 26). Single-dose HIV DNA vaccine induces long-lasting immune response in monkeys. ScienceDaily. Retrieved September 16, 2014 from www.sciencedaily.com/releases/2010/02/100224171854.htm
American Society for Microbiology. "Single-dose HIV DNA vaccine induces long-lasting immune response in monkeys." ScienceDaily. www.sciencedaily.com/releases/2010/02/100224171854.htm (accessed September 16, 2014).

Share This



More Health & Medicine News

Tuesday, September 16, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

President To Send 3,000 Military Personnel To Fight Ebola

President To Send 3,000 Military Personnel To Fight Ebola

Newsy (Sep. 16, 2014) — President Obama is expected to send 3,000 troops to West Africa as part of the effort to contain Ebola's spread. Video provided by Newsy
Powered by NewsLook.com
Man Floats for 31 Hours in Gulf Waters

Man Floats for 31 Hours in Gulf Waters

AP (Sep. 16, 2014) — A Texas man is lucky to be alive after he and three others floated for more than a day in the Gulf of Mexico when their boat sank during a fishing trip. (Sept. 16) Video provided by AP
Powered by NewsLook.com
EU Ministers and Experts Meet to Discuss Ebola Reponse

EU Ministers and Experts Meet to Discuss Ebola Reponse

AFP (Sep. 15, 2014) — The European Commission met on Monday to coordinate aid that the EU can offer to African countries affected by the Ebola outbreak. Duration: 00:58 Video provided by AFP
Powered by NewsLook.com
Despite The Risks, Antibiotics Still Overprescribed For Kids

Despite The Risks, Antibiotics Still Overprescribed For Kids

Newsy (Sep. 15, 2014) — A new study finds children are prescribed antibiotics twice as often as is necessary. Video provided by Newsy
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:
from the past week

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