This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrowReprints and Permissions
Right arrow Copyright Information
Right arrow Books from ASM Press
Right arrow MicrobeWorld
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Skrabal, K.
Right arrow Articles by Mammano, F.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Skrabal, K.
Right arrow Articles by Mammano, F.

 Previous Article  |  Next Article 

Journal of Virology, September 2005, p. 11848-11857, Vol. 79, No. 18
0022-538X/05/$08.00+0     doi:10.1128/JVI.79.18.11848-11857.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.

Human Immunodeficiency Virus Type 1 Variants Isolated from Single Plasma Samples Display a Wide Spectrum of Neutralization Sensitivity

Katharina Skrabal,1 Sentob Saragosti,1 Jean-Louis Labernardière,2 Francis Barin,3 François Clavel,1 and Fabrizio Mammano1*

INSERM U552 Recherche Antivirale,1 Viralliance, Paris,2 Université F. Rabelais, Tours, France3

Received 28 February 2005/ Accepted 22 June 2005

Individuals infected with human immunodeficiency virus type 1 (HIV-1) harbor a mixture of viral variants with different sequences and in some instances with different phenotypic properties. Major and rapid fluctuations in the proportion of viral variants coexisting in an infected individual can be observed under strong pharmacological and immune selective pressure. Because of the short half-life of HIV-infected cells and of HIV virions in the blood, plasma virus populations are highly relevant to HIV evolution in the face of these selective pressures. Here we analyzed the sensitivity to antibody-mediated neutralization of viral variants coexisting in the plasma virus populations of two infected patients. For each patient, several replication-competent viral clones were constructed that carry primary envelope gene sequences obtained from a single plasma sample. Viral clones differed in their tropism and replicative capacity and in the number and positions of glycosylation sites in the envelope glycoproteins. Viruses were tested against heterologous and autologous sera obtained at different time points. Interestingly, we found that viral variants coexisting in each plasma sample were highly heterogeneous in terms of sensitivity to neutralization. The order of sensitivity depended on the serum used and was not associated with virus tropism. The neutralization potency of sera increased with the duration of the infection for both autologous and heterologous neutralization.

* Corresponding author. Mailing address: INSERM U552 Recherche Antivirale, IMEA—Hôpital Bichat-Claude Bernard, 46 rue H. Huchard, 75018 Paris, France. Phone: 33-1-4025 6368. Fax: 33-1-4025 6370. E-mail: mammano{at}bichat.inserm.fr.

Journal of Virology, September 2005, p. 11848-11857, Vol. 79, No. 18
0022-538X/05/$08.00+0     doi:10.1128/JVI.79.18.11848-11857.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Bunnik, E. M., Quakkelaar, E. D., van Nuenen, A. C., Boeser-Nunnink, B., Schuitemaker, H. (2007). Increased Neutralization Sensitivity of Recently Emerged CXCR4-Using Human Immunodeficiency Virus Type 1 Strains Compared to Coexisting CCR5-Using Variants from the Same Patient. J. Virol. 81: 525-531 [Abstract] [Full Text]  
  • Bailey, J. R., Lassen, K. G., Yang, H.-C., Quinn, T. C., Ray, S. C., Blankson, J. N., Siliciano, R. F. (2006). Neutralizing antibodies do not mediate suppression of human immunodeficiency virus type 1 in elite suppressors or selection of plasma virus variants in patients on highly active antiretroviral therapy.. J. Virol. 80: 4758-4770 [Abstract] [Full Text]  
  • Wu, X., Parast, A. B., Richardson, B. A., Nduati, R., John-Stewart, G., Mbori-Ngacha, D., Rainwater, S. M. J., Overbaugh, J. (2006). Neutralization Escape Variants of Human Immunodeficiency Virus Type 1 Are Transmitted from Mother to Infant. J. Virol. 80: 835-844 [Abstract] [Full Text]  


Copyright © 2009 by the American Society for Microbiology.   For an alternate route to Journals.ASM.org, visit: http://intl-journals.asm.org | More Info»