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~ NEWS~

January, 2008

The beginning of 2008 marks a breakthrough in the efforts of HRF to develop a vaccine capable of protecting against both hepatitis B and C viruses, the major causes of cirrhosis and liver cancer, worldwide.

Our recently completed chimpanzee trial revealed that a vaccinia virus vector containing genes from both HBV and HCV viruses induced complete protection against chronic infection with both viruses. The immunized animals also controlled infections due to all 6 genotypes of HCV.

Our collaborator in Japan has now introduced HCV genes into the completely attenuated Japanese smallpox vaccine strain (LC16m8), HBV genes are now also being inserted into this vector. This has made possible the start of clinical trials of this very promising vaccine. This vector is so attenuated, having produced no significant side effects in ~100,000 children, that further chimpanzee trials are not required. This vector replicates in man, thus high doses are not required, making the vaccine highly affordable (10-20 cents/dose).

The following clinical trials are now scheduled to begin in 2008:

1. Safety and immunogenicity: adults, children, infants, and newborns in Liberia will be immunized with 2 doses of vaccine, and will be carefully followed for side effects, and for production of humoral and cellular immune responses. Newborns are included since prevention of HBV infection in Africa and Asia requires protection against maternal-infant transmission. In addition subjects with mild and severe HIV infection will be similarly tested since HIV is so prevalent in most parts of Africa and Asia, and the vaccine vector could spread to HIV infected individuals.

2. Efficacy in prevention of HCV infection. This trial will be done in New York in IV drug users who have an incidence of 10% new infections.

3. Efficacy in prevention of HBV infections in infants and newborns of HBV infected mothers. This trial will be done in Liberia where almost 100% of infants born to infected mothers become chronically infected, and an average of 26% of infants develop HBV infection each year between the ages of 1 and 4.

4. Efficacy in immunotherapy of chronic infections. Chronically HCV infected subjects will be treated with chemotherapy to reduce viral loads, immunized with DNA encoding HCV antigens, and then exposed to the above vaccine together with immunostimulatory molecules.

The above exciting plans are a culmination of more than 20 years of research. HRF now urgently needs the financial support of its friends and supporters. Without this support these very promising trials can not be carried out.

Please help!

Alfred M. Prince MD
Chairman, Hepatitis Research Foundation

Click Here to DONATE NOW

June, 2006

About our New Look ~

Special thanks to Ken Schneidman
for his help rebuilding HRF's website!

Ken's logo


June, 2006

Introducing:

The Hepatitis & AIDS Research Institute (HARI)


June, 2006

Scientific members of HRF, HARI, and the Chimpanzee Sanctuary are now available to lecture  on Hepatitis, AIDS Research, and Chimpanzee welfare.


May, 2006

For the lastest on HCV research click HERE


October, 2004

The Hepatitis Research Foundation, together with the New York Blood Center, sponsors Vilab II, a chimpanzee research laboratory, and a chimpanzee retirement Sanctuary, at the Liberian Institute of Biomedical Research in Liberia. The laboratory is headed by Alfred M. Prince MD, Betsy Brotman, and Wolfram Pfahler DVM, PHD, Medical director. This laboratory is very active in the search for new drugs for therapy of chronic HCV infections, and in the attempt to develop approaches for therapeutic immunization, which could in principle result in a one time permanent cure. Vilab II has a unique resource for these studies: 23 chimpanzees who are chronically infected with HCV.

The laboratory has also been working on the development of a safe and effective vaccine to prevent HCV infections. During the past 10 years many potential vaccines have been evaluated in chimpanzees by Vilab II investigators, and by other groups. None were shown to be effective until this year, when a trial of a recombinant vaccinia virus, the virus used for immunization against smallpox, showed full protective efficacy. Vilab II investigators are now working together with a team led by Bertram Jacobs PHD, at Arizona State University, with support from the National Institutes for Health (NIH), to make a vaccinia virus vector that is totally safe. This will require additional chimpanzee studies before being subjected to clinical trial in man.

All contributions to the Hepatitis Research Foundation received in 2004-5 will be devoted to strengthening the exciting activities at Vilab II directed to development of safe and effective treatment and prevention strategies for HCV.


March, 2004

HRF Would Like to send a VERY SPECIAL THANK YOU TO
The Hospitality Sweeties and The Left Coast Crew,
Fans of the Allman Brothers Band, who got together,
and
MADE A DIFFERENCE.
Everyone at HRF has an appreciation for music and have always felt that
a creative, colorful side to hepatitis fundraising could be attained. The Hospitality Sweeties and the Left Coast Crew are the embodiment of this.

Just 14 days before the Allman Brothers Band's Annual NYC, Beacon run, Brent Daniel of Gardenia, CA came up with the idea to hold a raffle and to donate the funds to charity. With the help of Linda Braswell and Sari Begleiter this event was a success. Thanks to the wonderful generosity of the fans and affiliates of the Allman Brothers Band, the raffle raised over $2,400, of which HRF was given half. The other half was donated to Rock and Wrap it Up, an organization that feeds the hungry. The donation was made in the name of Jody Daddio and Tony Hirsch. Both have taken great strides to increase awareness of hepatitis C on the Allman Brothers Band Website.

Special Thanks to,The Hospitality Sweeties

Linda Braswell,
Jaquie Winner,
Stacy Bergin,
Terri Belco
Sari Begleiter

&

The Left Coast Crew

Brent Daniel,
Dino Goldstein,
Scott Sachs,
Big Dave Lindhall,
Big Rich Pinetski


December 19, 2003

HRF would like to thank, Matt Turk (pictured below) and Kenny Schneidman.
It is so refreshing to cross paths with people like you both. We are very grateful to have the opportunity to build this bridge together.
T H A N K  Y O U for helping to make our benefit a success!

MT BENEFIT

HRF would also like to thank Marie Bresnahan, of the
American Liver Foundation
& Friend,

ALF MB

and David Maxwell of the
New England Organ Bank
for showing your support!


December 19, 2003

Matt Turk to perform at Slipper Room to benefit HRF


November 30, 2003

HRF to join Dark Star Orchestra
at Tuxedo Junction, in Danbury, CT


August 19, 2002

Click here for VIRAX PRESS RELEASE


August, 2002

VIRAX TO DEVELOP HEPATITIS B TREATMENT WITH ALFRED M. PRINCE OF THE NEW YORK BLOOD CENTER

Click here for more information


January, 2002

Dr. Prince has made important progress towards the development of therapeutic immunization for HBV and HCV at his laboratory of Virology at the New York Blood Center:

  • The chronically HBV infected chimpanzee successfully treated
    by therapeutic immunization remains well and with only a negligible viral load 5 years after the initiation of therapy.

  • A recombinant vaccinia virus booster has been found to be 10-100 times as immunogenic as the previously used canarypox boosters, This has important implications for therapeutic and prophylactic immunization.

  • HCV has been found to produce, after exposure to low doses of virus an immunizing infection which does not result in production of antibody or viremia, while cell mediated immunity is strong, and protects against further infection. This may explain why HCV appeared to be so rarely transmitted sexually. Low dose transmission may have been immunogenic. The laboratory is anxious to test sexual contacts of HCV carriers by tests for cell mediated immunity. Please contact Dr Fred Prince at aprince@nybc.org if interested.

  • Dr Linda Andrus is making substantial progress towards development of a mouse model for HCV using transplanted fetal liver cells. This would be boon to vaccine and therapeutic immunization research because chimpanzees are rare, endangered and expensive to work with.

December, 2001

3rd Annual Midwinter HCV Symposium

Barbados symp

Due to the growing support and interest in the last three years, the 3rd Annual Midwinter HCV Symposium on Molecular Biology held in Barbados, West Indies from November 29 through December 1, 2001, was an astounding success! The biggest challenge we experienced was in limiting the number of attendees from the overwhelming response to our invite. Maintaining a small, intimate group is essential in keeping with the purpose of this meeting: to foster an uninhibited atmosphere and level of tenacious discussion among the leading scientists in hepatitis C research. The following are some comments from attendees' on the recent symposium:

"I would like to thank you once again very cordially for your kind invitation to participate at the Midwinter Symposium in Barbados. It was a wonderful and absolutely unique experience, and I very much enjoyed the numerous stimulating and fruitful discussions in such a relaxed atmosphere."

Darius Moradpour, MD
University of Freiburg

"Thanks again for opening the window for better science. I begin to be addicted to this Winter Conference, feeling withdrawal symptoms already. Science can be fun - you have taught this to us."

Eckard Wimmer, PhD
Professor, SUNY, Stony Brook

"I am writing to let you know how much I enjoyed the Midwinter Meeting and to compliment you on the program and choice of venue. I really did enjoy it enormously and I'd like to thank you for the very kind invitation…. The size of the meeting…felt very comfortable."

Eric Gowans, PhD
Macfarlane Burnet Institute for Medical Research and Public Health

"…the organization was perfect which allowed the science and the social parts as well to proceed so freely. These Winter Symposia are simply the best meetings that I attend…"

Stephen Feinstone, MD
Chief, Laboratory of Hepatitis Viruses
CBER, FDA

"I want to thank you both again for the memorable HCV meeting in Barbados. It was also an enjoyable opportunity for me to make new acquaintances. We all had fun and learned a lot as well!!"

Joanne E. Tomassini, PhD
Department of Biological Chemistry
Merck Research Laboratories

"…a wonderful gathering…and a memorable time…"

Arash Grakoui, PhD
The Rockefeller University

        Following the success of the recent meeting, the New York Blood Center and the Hepatitis Research Foundation are sponsoring the 4th Annual Midwinter Symposium on the Molecular Biology and Immunology of Hepatitis C Virus in Costa Rica in late November 2002.


December, 2001

The Hepatitis Research Foundation would like to thank Abbott Laboratories for their generous grant in support of research for the prevention and cure of HCV and HBV viruses.


April, 2001

In April of this year, the International Consortium on Hepatitis Immunization is submitting a request for $50 million in support of its efforts in prophylactic and therapeutic immunization for hepatitis B and C to the Gates Foundation. If this is granted, it would go a long way towards bringing its research to application in man. If not, HepRF will have an even greater challenge.

Meanwhile, scientists of the Consortium have developed new vaccine candidates, means for enhancing the immune response to these, and a better understanding of how some patienst can rid themselves of HBV and HCV infections. The findings will have a major impact on future research in hepatitis immunization. The Consortium is optimistic for rapid progress, and expects clinical trials in therapeutic immunization to begin in the coming year.


November 14, 2000


CLICK HERE!


September, 2000

The Hepatitis Research Foundation would like to thank the Don and Rita Lee Foundation for their continued support for research to find the means by which to cure HCV


August, 2000

We would like to thank the band, Phish, for the donation of a signed poster which was auctioned off to benefit hepatitis research.


JULY 13-15, 2000

2000 symp

MIDSUMMER SYMPOSIUM ON THE MOLECULAR BIOLOGY AND IMMUNOLOGY OF HCV
Click Here


March 22, 2000

The following is a follow-up on the 1999 Midwinter Symposium on Molecular Biology and Immunology of HCV:

As intended, the meeting was small, but included truly outstanding scientists, who were able to interact and communicate in a way seldom possible in larger meetings.

The attendees were: Vince Agnello, Lahey Clinic, USA; Sven-Erik Behrens, Institut fur Virologie, Germany; Jens Bukh, NIH, USA; Marc Collett, ViroPharma Inc., USA; Nili Daudi, Hadassah University Hospital, Israel; Raffaele De Francesco, IRBM, Italy; Min Gao, Bristol-Myers Squibb, USA; Yoshiharu Matsuura, National Institute of Infectious Diseases, Japan; Charlie Rice, Washington University, USA; Christoph Seeger, Fox Chase Cancer Center, USA; Julian Symons, Roche Discovery Welwyn, UK; Eckard Wimmer, SUNY, Stony Brook, USA; Pei Zhang, New York Blood Center, USA; and Weidong Zhong, Schering-Plough, USA. Drs. Barbara Rehermann and Steve Feinstone tried to attend but were able to come only as far as Puerto Rico due to congestion resulting from a recent hurricane.

The following are comments of some of those who attended the Symposium:

"The St. Vincent meeting was a real success. The informal atmosphere and the small number of participants favored the scientific discussion and the unrestricted exchange of novel information. I enjoyed it a lot and I look forward to repeating it."

"inspired a lot through good discussion with outstanding researchers of the field."

"The small number of participants promoted scientific discussion."

a splendid meeting. In particular, it broadened and deepened my understanding of the molecular HCV work.

We all felt that the meeting was outstandingly successful and therefore plan to hold another Midwinter Symposium in 2000. This time there will be more emphasis on immunology, which was under represented this year.


The following is an article from the Winter 2000 edition of Bloodlines, a Newsletter put out by the New York Blood Center:

Harnessing Immune Defenses To Combat Hepatitis C

About 170 million people worldwide, including an estimated 4 million Americans, have been infected with hepatitis C virus (HCV). Of those who become infected, 75% to 85% continue to harbor chronic infection. In a small percentage of people, chronic HCV infection can eventually lead to life-threatening illnesses such as cirrhosis and liver cancer, and it is the single most common cause for liver transplants.

Alfred Prince, M.D., head of NYBC's Laboratory of Virology, and his colleagues are focusing on a two-pronged approach for attacking hepatitis C: a vaccine to prevent viral transmission, and immunotherapy to wipe out the infection in chronic carriers.

Dr. Prince's team is well prepared for this task, having already achieved several crucial breakthroughs in hepatitis research. Over the last three decades, they have identified a hepatitis B virus (HBV) surface antigen, leading to the first screening test for that disease; developed an inexpensive HBV vaccine now widely used in developing countries; and were the first to report the existence of a blood-borne virus that was subsequently identified as hepatitis C.

Although new cases of hepatitis C are on the decline, there are still close to 3 million chronic HCV carriers in the U.S., and the incidence of HCV-related liver disease among this population is likely to increase. Dr. Prince's team is exploring the use of DNA-based immunotherapy to help avert the long-term complications of HCV in these chronic carriers. The researchers were recently encouraged by the dramatic response to DNA-based immunization in a chimpanzee infected with hepatitis B (HBV). Within weeks, the virus was almost entirely cleared from the animal's blood, after 10 years of chronic infection. Dr. Prince anticipates starting human trials of a similar HBV vaccine at Mount Sinai Medical Center in early 2000, pending FDA approval.

DNA-BASED VACCINES: KEY TO CONTROLLING HEPATITIS C?

      From 15% to 25% of patients infected with hepatitis C mount a rapid, efficient immune response that eradicates the virus from their blood in the early stages of infection. Dr. Prince’s team hopes to elicit a similar, powerful immune response in both uninfected individuals and chronic HCV carriers by using DNA-based vaccines. When analyzing the robust immune response of the chimp treated with the DNA-based HBV vaccine, the scientists made an exciting discovery: Rather than the expected increase in killer T cells, they found a marked rise in cells secreting gamma-interferon, an immune protein with potent antiviral activity. Dr. Prince observes, "We suspect this mechanism may also play a role in immunity to hepatitis C."

For their first trial of immunotherapy in chimpanzees with chronic HCV infection, Dr. Prince and his colleagues used DNA constructs incorporating two HCV genes, but this vaccine failed to reduce the viral blood level. In the current trial, they are testing DNA constructs that include most of the HCV genes. They are also giving the animals separate DNA constructs containing genes for three different molecules (termed cytokines) known to enhance the immune response.

On another front, the researchers are exploring the use of so-called minigene constructs to induce immunity to HCV infection. These DNA constructs consist of gene fragments encoding those parts of different viral proteins that are recognized by the immune response. Existing data indicate that such minigene constructs can provoke an even stronger response than whole viral genes. Dr. Prince's group is currently evaluating an HCV minigene construct in mice.

Finally, the NYBC scientists are attempting to target the DNA directly to a specific type of immune cell (dendritic cell). According to Dr. Prince, this targeted approach would "tend to boost the immune response, and as importantly, it would reduce the amount of DNA we would have to administer, so that developing countries could afford the vaccine" once it becomes available. As ongoing research yields a clearer picture of HCV infection, the prospect of developing effective strategies to prevent and treat this devastating disease continues to rise.


Current Research:

Alfred M. Prince, MD

" Dr Alfred Prince is using a variety of DNA based immunization strategies to enhance the anti-viral immune responses in mice and in chimpanzees. The target viruses are hepatitis B (HBV) and hepatitis C virus (HCV). These studies are aimed at producing therapeutic immunization to lower the viral load, and ultimately, he hopes, to eliminate the viral infection entirely. Very promising results have been obtained with chronic HBV infection in a chimpanzee, where viral load was reduced by 2-3 orders of magnitude. This effect lasted for more than 2 years. The strategy used in this study will be evaluated in a clinical trial with humans chronicaly infected with HBV. Similar studies, using a variety of strategies to enhance the immune response, are in progress with HCV"

Jules Dienstag, MD

Currently, Dr. Dienstag is conducting clinical trials of antiviral therapy for chronic hepatitis C. They are involved in a multicenter study of combination long-acting pegylated interferon plus ribavirin. They have also been selected as a clinical center site for a new multicenter NIH-sponsored clinical trial of antiviral therapy in interferon nonresponders.

Click Here to Email Us

Hepatitis Research Foundation

553 Salt Point Turnpike
Poughkeepsie, New York 12601
845.483.7899   FAX: 845.471.2253

 

HRF is recognized by the Internal Revenue Service as a public charity
under section 501(c)(3) of the Internal Revenue Code.

EIN #14-1807382

 

Webmaster: HepRF@heprf.org


Scientific members of HRF and the Chimpanzee Sanctuary are available to lecture on Hepatitis, AIDS Research, and Chimpanzee welfare.


The Foundation thanks Adobe's Gifts in Kind program for their generous contribution.


The Hepatitis Research Foundation would like to thank the Don and Rita Lee Foundation for their continuous support for immunotherapy of chronic HCV infection.


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