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Journal of Translational Medicine
Published in: Journal of Translational Medicine 1/2009

Open Access 01-12-2009 | Review

Protective versus pathogenic anti-CD4 immunity: insights from the study of natural resistance to HIV infection

Authors: Samuele E Burastero, Mariangela Figini, Barbara Frigerio, Paolo Lusso, Luca Mollica, Lucia Lopalco

Published in: Journal of Translational Medicine | Issue 1/2009

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Abstract

HIV-1 exposure causes several dramatic unbalances in the immune system homeostasis. Here, we will focus on the paradox whereby CD4 specific autoimmune responses, which are expected to contribute to the catastrophic loss of most part of the T helper lymphocyte subset in infected patients, may display the characteristics of an unconventional protective immunity in individuals naturally resistant to HIV-1 infection. Reference to differences in fine epitope mapping of these two oppositely polarized outcomes will be presented, with particular reference to partially or totally CD4-gp120 complex-specific antibodies. The fine tuning of the anti-self immune response to the HIV-1 receptor may determine whether viral exposure will result in infection or, alternatively, protective immunity.
Along this line, an efficacious anti-HIV strategy can rely on the active (i.e., through immunization) or passive targeting of cryptic epitopes of the CD4-gp120 complex, including those harboured within the CD4 molecule. Such epitopes are expected to be safe from genetic drift and thus allow for broad spectrum of efficacy. Moreover, since these epitopes are not routinely exposed in uninfected individuals, they are expected to become targets of neutralizing antibodies or other specifically designed molecules only after viral exposure, with a predictable low impact in terms of potentially harmful anti-CD4 self-reactivity.
The experimentum naturae of naturally resistant individuals indicates a strategy to design innovative strategies to neutralize HIV-1 by acting on the sharp edge between harmful and protective self-reactivity.
Appendix
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Metadata
Title
Protective versus pathogenic anti-CD4 immunity: insights from the study of natural resistance to HIV infection
Authors
Samuele E Burastero
Mariangela Figini
Barbara Frigerio
Paolo Lusso
Luca Mollica
Lucia Lopalco
Publication date
01-12-2009
Publisher
BioMed Central
Published in
Journal of Translational Medicine / Issue 1/2009
Electronic ISSN: 1479-5876
DOI
https://doi.org/10.1186/1479-5876-7-101

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Year in Review: Heart failure and cardiomyopathies

Heart Failure Video

Watch this official video from ACC.24. Dr. Biykem Bozkurt discusses last year's major advances in heart failure and cardiomyopathies.

ACC 2024 Congress Coverage

Year in Review: Heart failure and cardiomyopathies

Heart Failure Video

Watch this official video from ACC.24. Dr. Biykem Bozkurt discusses last year's major advances in heart failure and cardiomyopathies.

Watch now

Semaglutide benefits people with type 2 diabetes and obesity-related heart failure

16-04-2024 Type 2 Diabetes News

Incentivised to exercise

11-04-2024 Lifestyle Modifications News

New intervention for STEMI-related cardiogenic shock

10-04-2024 Myocardial Infarction News

» View more highlights on the ACC 2024 congress hub page

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