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Antibody evolution could guide HIV vaccine development

Date:
April 4, 2013
Source:
DOE/Los Alamos National Laboratory
Summary:
Observing the evolution of a particular type of antibody in an infected HIV-1 patient, a new study has provided insights that will enable vaccination strategies that mimic the actual antibody development within the body.

Co-evolution of virus and antibody – The evolution of the viral protein (green) from 14 weeks through 100 weeks post-transmission is compared to the maturation of the human antibody.
Credit: Image courtesy Los Alamos National Laboratory.

Observing the evolution of a particular type of antibody in an infected HIV-1 patient, a study spearheaded by Duke University, including analysis from Los Alamos National Laboratory, has provided insights that will enable vaccination strategies that mimic the actual antibody development within the body.

The kind of antibody studied is called a broadly cross-reactive neutralizing antibody, and details of its generation could provide a blueprint for effective vaccination, according to the study's authors. In a paper published online in Nature this week, the team reported on the isolation, evolution and structure of a broadly neutralizing antibody from an African donor followed from the time of infection.

The observations trace the co-evolution of the virus and antibodies, ultimately leading to the development of a strain of the potent antibodies in this subject, and they could provide insights into strategies to elicit similar antibodies by vaccination.

Patients early in HIV-1 infection have primarily a single "founder" form of the virus that has been strong enough to infect the patient, even though the population in the originating patient is usually far more diverse and contains a wide variety of HIV mutations. Once the founder virus is involved in the new patient's system, the surrounding environment stimulates the HIV to mutate and form a unique, tailored population of virus that is specific to the individual.

The team, including Bette Korber, Peter Hraber, and S. Gnanakaran, of Los Alamos National Laboratory, led by Barton Haynes of Duke University School of Medicine in Durham, North Carolina, with colleagues at Boston University, the National Institutes of Health, and other institutions as part of a large collaboration, showed that broadly neutralizing antibodies developed only after the population of viruses in the individual had matured and become more diverse.

"Our hope is that a vaccine based on the series of HIV variants that evolved within this subject, that were together capable of stimulating this potent broad antibody response in his natural infection, may enable triggering similar protective antibody responses in vaccines," said Bette Korber, leader of the Los Alamos team.

This study was supported by the National Institutes of Allergy and Infectious Diseases (NIAID) and by intramural National Institutes of Health (NIH) support for the NIAID Vaccine Research Center, by grants from the NIH, NIAID, AI067854 (the Center for HIV/AIDS Vaccine Immunology) and AI100645 (the Center for Vaccine Immunology-Immunogen Discovery). Use of sector 22 (Southeast Region Collaborative Access team) at the Advanced Photon Source at Argonne National Laboratory was supported by the US Department of Energy, Basic Energy Sciences, Office of Science, under contract number W-31-109-Eng-38.


Story Source:

The above story is based on materials provided by DOE/Los Alamos National Laboratory. Note: Materials may be edited for content and length.


Journal Reference:

  1. Hua-Xin Liao, Rebecca Lynch, Tongqing Zhou, Feng Gao, S. Munir Alam, Scott D. Boyd, Andrew Z. Fire, Krishna M. Roskin, Chaim A. Schramm, Zhenhai Zhang, Jiang Zhu, Lawrence Shapiro, Jesse Becker, Betty Benjamin, Robert Blakesley, Gerry Bouffard, Shelise Brooks, Holly Coleman, Mila Dekhtyar, Michael Gregory, Xiaobin Guan, Jyoti Gupta, Joel Han, April Hargrove, Shi-ling Ho, Taccara Johnson, Richelle Legaspi, Sean Lovett, Quino Maduro, Cathy Masiello, Baishali Maskeri, Jenny McDowell, Casandra Montemayor, James Mullikin, Morgan Park, Nancy Riebow, Karen Schandler, Brian Schmidt, Christina Sison, Mal Stantripop, James Thomas, Pam Thomas, Meg Vemulapalli, Alice Young, James C. Mullikin, S. Gnanakaran, Peter Hraber, Kevin Wiehe, Garnett Kelsoe, Guang Yang, Shi-Mao Xia, David C. Montefiori, Robert Parks, Krissey E. Lloyd, Richard M. Scearce, Kelly A. Soderberg, Myron Cohen, Gift Kamanga, Mark K. Louder, Lillian M. Tran, Yue Chen, Fangping Cai, Sheri Chen, Stephanie Moquin, Xiulian Du, M. Gordon Joyce, Sanjay Srivatsan, Baoshan Zhang, Anqi Zheng, George M. Shaw, Beatrice H. Hahn, Thomas B. Kepler, Bette T. M. Korber, Peter D. Kwong, John R. Mascola, Barton F. Haynes. Co-evolution of a broadly neutralizing HIV-1 antibody and founder virus. Nature, 2013; DOI: 10.1038/nature12053

Cite This Page:

DOE/Los Alamos National Laboratory. "Antibody evolution could guide HIV vaccine development." ScienceDaily. ScienceDaily, 4 April 2013. <www.sciencedaily.com/releases/2013/04/130404184540.htm>.
DOE/Los Alamos National Laboratory. (2013, April 4). Antibody evolution could guide HIV vaccine development. ScienceDaily. Retrieved August 30, 2014 from www.sciencedaily.com/releases/2013/04/130404184540.htm
DOE/Los Alamos National Laboratory. "Antibody evolution could guide HIV vaccine development." ScienceDaily. www.sciencedaily.com/releases/2013/04/130404184540.htm (accessed August 30, 2014).

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