The broad purpose of this program-project is to show that advances AAV-based gene therapy enable stable, long-term suppression of HIV-1 replication. Our immediate goal is to stably suppress an ongoing SHIV-infection in rhesus macaques, using specific combinations of antiviral proteins delivered by self-complementary AAV vectors. Any effective therapy for HIV-1 infection has to solve the problem of viral escape. This project addresses the problem of viral escape from a cocktail of antibodies iteratively, by rapidly identifying viral escape pathways and adjusting these cocktails so that these pathways are blocked. We are aided in this effort by a variant of CD4-Ig, fused to a 14-amino-acid peptide that closely mimics a high-affinity binding region of CCR5. This enhanced CD4-Ig (

Public Health Relevance

Adeno-associated virus (AAV) vectors expressing HIV-1 neutralizing antibodies have the potential to replace current anti-retroviral combination therapies. However, the problem of viral escape from these protein inhibitors must be solved before AAV expressed transgenes can be useful therapeutically. In this project we address this critical problem of viral escape, and improve several HIV-1 neutralizing antibodies.

Agency
National Institute of Health (NIH)
Institute
National Institute of Allergy and Infectious Diseases (NIAID)
Type
Research Program Projects (P01)
Project #
1P01AI100263-01
Application #
8311213
Study Section
Special Emphasis Panel (ZAI1-RB-A (J1))
Project Start
2012-04-01
Project End
2012-11-30
Budget Start
2012-04-01
Budget End
2013-03-31
Support Year
1
Fiscal Year
2012
Total Cost
$441,853
Indirect Cost
$111,853
Name
Harvard University
Department
Type
DUNS #
047006379
City
Boston
State
MA
Country
United States
Zip Code
02115
Martinez-Navio, José M; Fuchs, Sebastian P; Pedreño-López, Sònia et al. (2016) Host Anti-antibody Responses Following Adeno-associated Virus-mediated Delivery of Antibodies Against HIV and SIV in Rhesus Monkeys. Mol Ther 24:76-86
Gardner, Matthew R; Fellinger, Christoph H; Prasad, Neha R et al. (2016) CD4-Induced Antibodies Promote Association of the HIV-1 Envelope Glycoprotein with CD4-Binding Site Antibodies. J Virol 90:7822-32
Rashnonejad, Afrooz; Chermahini, Gholamhossein Amini; Li, Shaoyong et al. (2016) Large-Scale Production of Adeno-Associated Viral Vector Serotype-9 Carrying the Human Survival Motor Neuron Gene. Mol Biotechnol 58:30-6
Xie, Jun; Burt, Daniel Robert; Gao, Guangping (2015) Adeno-associated virus-mediated microRNA delivery and therapeutics. Semin Liver Dis 35:81-8
Wang, Dan; Mou, Haiwei; Li, Shaoyong et al. (2015) Adenovirus-Mediated Somatic Genome Editing of Pten by CRISPR/Cas9 in Mouse Liver in Spite of Cas9-Specific Immune Responses. Hum Gene Ther 26:432-42
Fuchs, Sebastian P; Martinez-Navio, José M; Piatak Jr, Michael et al. (2015) AAV-Delivered Antibody Mediates Significant Protective Effects against SIVmac239 Challenge in the Absence of Neutralizing Activity. PLoS Pathog 11:e1005090
Gardner, Matthew R; Kattenhorn, Lisa M; Kondur, Hema R et al. (2015) AAV-expressed eCD4-Ig provides durable protection from multiple SHIV challenges. Nature 519:87-91
Ahmed, Seemin S; Gao, Guangping (2015) Making the White Matter Matters: Progress in Understanding Canavan's Disease and Therapeutic Interventions Through Eight Decades. JIMD Rep 19:11-22
Wang, Dan; Gao, Guangping (2014) State-of-the-art human gene therapy: part I. Gene delivery technologies. Discov Med 18:67-77
Quinlan, Brian D; Joshi, Vinita R; Gardner, Matthew R et al. (2014) A double-mimetic peptide efficiently neutralizes HIV-1 by bridging the CD4- and coreceptor-binding sites of gp120. J Virol 88:3353-8

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