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Juvaris BioTherapeutics Announces Effectiveness
of the JuvImmuneTM Immunostimulant
for AntiViral Applications
Studies Demonstrate Efficacy for Punta Toro Virus
Infection in a Prophylactic and a Therapeutic Rodent Model
Pleasanton, CA - March 1, 2006
Juvaris BioTherapeutics, Inc. announced today the publication of
the preclinical evaluation for the efficacy of the JuvImmuneTM immunostimulant
platform in a mouse model of Punta Toro virus infection in the March
issue of the journal Antiviral Research. This research was conducted
in collaboration with Dr. Brian Gowen and Dr. Robert Sidwell at
the Institute for Antiviral Research of Utah State University and
was funded by the National Institute of Allergy and Infectious Diseases
(NIAID), part of the National Institutes of Health.
Juvaris' JuvImmuneTM technology was found to be highly active against
PTV infection and exhibited rapid activation of the innate immune
response for the production of anti-viral interferons as well as
interleukins. JuvImmuneTM treatment was well-tolerated and demonstrated
complete protection in both prophylactic and therapeutic applications.
Other observations included increased survival time, reduction of
virus-induced liver damage, and decreased virus titers.
"We are pleased with these dramatic efficacy results and the external
validation they provide for the JuvImmuneTM technology.
To achieve 100% protection using JuvImmuneTM without
an antigen to prevent disease in exposed animals is outstanding.
But to see 100% survival in a therapeutic application is remarkable.
We believe our platform has significant broad-based product applicability
in both chronic and acute viral infections, including biodefense
pathogens" said Martin D. Cleary, Co-founder, Chairman and CEO of
Juvaris.
Punta Toro virus (PTV), which produces a fatal hepatic disease
in animals, is closely related to the African and Middle Eastern
Rift Valley Fever and Sandfly Fever viruses. These viral infections
have had devastating effects in many parts of the world and are
now considered significant biodefense concerns to the United States.
Innate immune activation is the first-line of defense against viral
agents and is critical for induction of subsequent specific immune
responses. Preclinical studies, using JuvImmuneTM in other viral
and bacterial infection models, have also demonstrated substantial
amplification of immune responses and protection. JuvImmuneTM testing
is now being extended for evaluation in additional viral studies
including hepatitis B virus (HBV).
About Juvaris
Juvaris BioTherapeutics was created in 2003 to develop an immunotherapeutic
product platform for the treatment of infectious diseases and cancers
using lipid-DNA complexes. Cationic lipids are formulated with non-coding
DNA (plasmid) to create JuvImmuneTM, a lipid-DNA complex, which
as a single product will have utility in multiple cancer and infectious
disease applications. The JuvImmuneTM product has been shown to
be at least 50-times more potent at triggering innate immune activation
and interferon release than current immune stimulants.
When combined with disease-specific antigens, the technology creates
JuvaVaxTM vaccines capable of activating substantial antibody- and
cell-mediated immune responses, particularly induction of cytotoxic
T lymphocytes (CTL). Immunological responses elicited by the lipid-DNA
complexes have been successfully demonstrated in both prophylactic
and therapeutic settings in a variety of mammals including rodents,
rabbits, cats, dogs and non-human primates. Moreover, substantial
immune responses have been induced following oral and intranasal
administration. This platform provides the opportunity to develop
many disease-specific immunotherapy products, for which there are
significant unmet medical needs.
On January 9, 2006, the Company announced the award of a two-year
Small Business Technology Transfer (STTR) grant from the NIAID for
the development of an influenza A virus vaccine.
The Company encourages investment and partnering inquiries, including
this project, and can be reached at its website @ www.juvaris.com. Company Contact:
Grant E. Pickering
Juvaris BioTherapeutics, Inc.
863A Mitten Road
Burlingame, California
650-259-1800 ext. 227
gpickering@juvaris.com
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