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Printable Handouts
Navigable Slide Index
- Introduction
- Outline
- Early report on HIV
- The global HIV/AIDS epidemic
- HIV epidemiology in USA
- We may be on the road to an HIV vaccine
- HIV vaccine history
- Why there is still no HIV vaccine in 2015
- What is HIV
- How HIV causes AIDS
- Difficult to block HIV entry
- Simplified model of HIV envelope
- HIV rarely elicit bNAb
- Needle in a haystack
- Anti-HIV human mAb's binding sites
- Using rare human Ab's to prevent HIV infection
- Traditional immunization strategies
- Production of classic passive immunization
- Transferring the gene that encodes the Ab
- Antibody vs. antibody gene transfer
- Turning the muscle into an antibody factory
- Antibody gene transfer using AAV
- What is AAV
- In vivo human biology of AAV
- AAV vectors structure
- AAV vector mechanism
- Transduction of GFP in muscle
- Vector mediated immunoprophylaxis
- Source of anti-HIV antibodies
- Evolution of anti-HIV human mAb's - b12
- Antibody gene transfer in mice
- b12 produced for over 6 months
- From mice to monkeys
- Simian Immunodeficiency Virus (SIV)
- SIV antibody gene transfer in monkeys
- SIV ab gene delivery: experimental protocol
- "Immunized" animals were protected
- Antibody gene transfer on the long term
- Proof of concept in humans
- New HIV1 vaccine target
- Evolution of anti-HIV human mAb's - PG19
- rAAV1-PG9DP vaccine vector
- Protocol A003 (clinical trial)
- A003 study design
- A003 clinical trial progress
- A003 objectives
- Future directions
- Evolution of anti-HIV human mAb's - PGDM1400
- Other antibody gene transfer applications
- Antibody gene transfer limitations
- Summary
Topics Covered
- Epidemiology of HIV
- HIV vaccine history
- Antibody gene transfer vs. traditional passive immunization
- AAV gene transfer vectors
- Antibody gene transfer in mice
- Antibody gene transfer in monkeys
- Clinical trial for antibody gene transfer
Links
Series:
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Therapeutic Areas:
Talk Citation
Schnepp, B. (2015, May 28). Vector mediated immunoprophylaxis [Video file]. In The Biomedical & Life Sciences Collection, Henry Stewart Talks. Retrieved November 23, 2024, from https://doi.org/10.69645/QSEB4537.Export Citation (RIS)
Publication History
Financial Disclosures
- Dr. Bruce Schnepp has not informed HSTalks of any commercial/financial relationship that it is appropriate to disclose.
Other Talks in the Series: Vaccines
Transcript
Please wait while the transcript is being prepared...
0:00
My name is Bruce Schnepp,
and I'm from the Children's
Hospital of Philadelphia.
This lecture is
titled Vector Mediated
Immunoprophylaxis, which is a fairly
new concept in vaccine development.
I've been in this area of
study for over 15 years,
using this technology for the
development of an HIV vaccine.
0:18
For this lecture, I'm going
to focus on our efforts
to use vector mediated immunoprophylaxis as an HIV vaccine.
In our case, vector mediated
immunoprophylaxis simply
means that we're trying to
prevent disease by providing
antibodies to block infection.
A unique twist for us is how we
are delivering the antibodies.
So first, I'll introduce you to HIV
and sort of where we currently are
with progress towards a vaccine.
And I know that there
are other lectures
in this course that
discuss HIV in more detail,
so I'll keep this part brief.
I'll then introduce the concept of
vector mediated immunoprophylaxis
and the mechanics of how
it works, with emphasis
on how it differs from other
conventional vaccine strategies.
I'll then spend some time
discussing our path forward,
using this strategy to
develop an HIV vaccine.
This is sort of a case study that
takes you through some key animal
studies on mice and monkeys that
ultimately led us to clinical trial
on humans.
Finally, I'll discuss the future of
vector mediated immunoprophylaxis
with applications to
other difficult diseases
and end with highlighting a few of
the limitations of this strategy.
1:23
So here I'm showing you the
first report about HIV infection
that dates back to 1981.
That's 34 years ago.
So most of you probably
weren't even born at this time.
I, in fact, was in middle
school when this was published,
and a future and HIV
vaccine research was
the farthest thing from my mind.