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Track A – BASIC SCIENCE

Rapporteur Session

Jacques Fellay

EPFL, Lausanne, Switzerland www.aids2012.org

Washington D.C., USA, 22-27 July 2012

Jason Brenchley

The A Team

Galit Alter

Irene Onyango

Morgane Rolland Hendrik Streeck www.aids2012.org

Washington D.C., USA, 22-27 July 2012

Hot Topics

1. Reservoirs & latency

2. Inflammation & fibrosis

3. Genomics & systems biology www.aids2012.org

Washington D.C., USA, 22-27 July 2012

Hot Topics

1. Reservoirs & latency

2. Inflammation & fibrosis

3. Genomics & systems biology www.aids2012.org

Washington D.C., USA, 22-27 July 2012

Viral Eradication: The Cure Agenda

Javier Martinez-Picado

AIDS Research Institute (IrsiCaixa)

Autonomous University of Barcelona (UAB)

Catalan Institution for Research and Advanced Studies (ICREA) www.aids2012.org

Washington D.C., USA, 22-27 July 2012

Strategies to cure HIV

Gene therapy

Treatment optimization

& intensification

(eliminate all replication)

Therapeutic vaccination

Reversal of

HIV latency

(to enhance host-control)

(increase viral production)

Immune-based therapies

(reverse pro-latency signaling) www.aids2012.org

Washington D.C., USA, 22-27 July 2012

Strategies for depleting the latent

HIV reservoir

• Nanoparticle targeting of CD4+ T cells

(Jerome Zack)

• Allogeneic bone marrow transplantation

(Timothy Henrich) www.aids2012.org

Washington D.C., USA, 22-27 July 2012

Nanoparticles and new PKC activators

(Jerome Zack)

• Targeting lipid nanoparticles to CD4 T cells

• Loading them with activators of latent virus expression + anti-HIV drug to inhibit viral spread

 Reactivates latently infected cells, minimizes bystander activation and renders new virus non-infectious www.aids2012.org

Washington D.C., USA, 22-27 July 2012

The Structure of Rat Liver Vault at 3.5 Angstrom Resolution

Tanaka et al. Science 323, 384 (2009) www.aids2012.org

Washington D.C., USA, 22-27 July 2012

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Long-Term Reduction in Peripheral Blood HIV-1

Reservoirs Following Reduced-Intensity

Allogeneic Stem Cell Transplantation in Two HIV-

Infected Individuals

Timothy J. Henrich 1,2 , Gaia Sciaranghella 3 , Jonathan Z. Li 1,2 , Sebastien Gallien 4 ,

Vincent Ho 5,2 , Ann S. LaCasce 5,2 , and Daniel R. Kuritzkes 1,2

1 Brigham and Women's Hospital, Boston, MA; 2 Harvard Medical School, Boston, MA; 3 Ragon Institute of MGH, MIT, and Harvard, Boston, MA; 4 Hopital Saint-Louis, Paris, France;

5 Dana-Farber Cancer Institute, Boston, MA.

www.aids2012.org

Washington D.C., USA, 22-27 July 2012

Patient A

No 2-LTRs detected

VL

(clinical lab)

VL

(SCA)

TN

D

104

<1

.8

<1

.8

65

<1

.8

<1

.8

TN

D

TN

D

<0

.5

300

250

200

150

100

50

0

100% donor lymphochyte chimerism

Viral outgrowth assay negative day +1266

0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300

1000

800

600

400

200

0

0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300

Days after HSCT www.aids2012.org

Washington D.C., USA, 22-27 July 2012

• Allogeneic HSCT with suppressive ART led to a sustained reduction in the HIV-1 reservoir in

PBMCs

• What is now required to fully assess the extent of HIV-1 reservoir reduction?

 Tissue sampling

 Analytic treatment interruption www.aids2012.org

Washington D.C., USA, 22-27 July 2012

Hot Topics

1. Reservoirs & latency

2. Inflammation & fibrosis

3. Genomics & systems biology www.aids2012.org

Washington D.C., USA, 22-27 July 2012

HIV production

HIV replication

HIV-associated fat

Metabolic syndrome

CMV

Excess pathogens

Inflammation

↑ Endothelium adhesion

↑ Monocyte activation

Dyslipidemia

Hypercoagulation/ thrombotic events

Endothelial dysfunction

HIV-mediated loss of regulatory cells (Tregs) Steve Deeks

Microbial translocation

Lymph Node Fibrosis (Timothy Schacker)

• Inflammation  loss of FRC network in T cell zone of lymph nodes  decrease in IL-7 production  CD4 T cell apoptosis  collagen deposition

Zeng et al., PLoS Pathog. 2012 www.aids2012.org

Washington D.C., USA, 22-27 July 2012

Lymph node fibrosis is similar in HIVindividuals in Uganda and in chronic HIV+ individuals in the US

 may account for lower baseline CD4+ T cells and less immune reconstitution with ART

 may modify the size of the reservoir

 may have implications for eradication and cure in the developing world www.aids2012.org

Washington D.C., USA, 22-27 July 2012

Hot Topics

1. Reservoirs & latency

2. Inflammation & fibrosis

3. Genomics & systems biology www.aids2012.org

Washington D.C., USA, 22-27 July 2012

The future of genomics in HIV medicine

• Francis Collins – an NIH perspective

• Philip Tarr – a clinician’s perspective

 Genomics has the potential to benefit researchers, clinicians and patients www.aids2012.org

Washington D.C., USA, 22-27 July 2012

Third generation long-read sequencing of HIV-1 transcripts discloses cell type specific and temporal regulation of

RNA splicing

Frederic Bushman

International AIDS Meeting

Washington DC, 2012 www.aids2012.org

Washington D.C., USA, 22-27 July 2012

Combination of two technological advances to explore HIV transcripts at an unprecedented scale:

– Single molecule microdroplet-based digital

PCR technology (RainDance)

– High-throughput single molecule real-time sequencing technology (Pacific Bioscience) www.aids2012.org

Washington D.C., USA, 22-27 July 2012

Complete message population of HIV-1

89.6

in CD4 + T cells

• 77 complete message structures

• Evidence for 36 additional transcripts from partial reads

• Total: 113 mRNAs

• 19 novel transcripts including a new completely spliced class (~1kb)

Scott Sherrill-Mix

A web site for exploring HIV Systems Biology data http://microb32.med.upenn.edu/

Be a systems biologist!

www.aids2012.org

Washington D.C., USA, 22-27 July 2012

Track A Committee

Danny Douek Amalio Telenti

Galit Alter

Frederic Bushman

Nicolas Chomont

Genoveffa Franchini

David Haerry

Esper Kallas www.aids2012.org

Yves Levy

Sharon Lewin

Thumbi Ndung’u

Robert Oelrichs

Javier Martinez-Picado

Washington D.C., USA, 22-27 July 2012

Science

www.aids2012.org

Washington D.C., USA, 22-27 July 2012

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