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  1. [verwijderd] 10 juni 2005 15:37
    Even in de literatuur gedoken. Er is ook een andere groep bezig met antilichamen tegen WNV. Dit is nu al gepubliceerd:

    Lab Animal 34, 6 (2005)

    Antibody neutralizes West Nile virus

    A newly developed therapeutic antibody, capable of neutralizing West Nile virus (WNV) even several days after the onset of infection, may prove an important breakthrough for preventing WNV-related deaths and for tackling other related viruses.

    Although birds are the primary carrier of WNV, scientists and doctors have been aware for some time that the mosquitoes that transmit the virus can also pass it along to mammals—including humans. The majority of the population experiences no ill effects from WNV exposure, but those who do are at risk for encephalitis and meningitis, both severe and potentially fatal afflictions of the brain. Patients older than 50 years of age are at particular risk.

    en nog belangrijker:

    Nature Medicine 11, 522 - 530 (2005)
    Published online: 24 April 2005; | doi:10.1038/nm1240

    Development of a humanized monoclonal antibody with therapeutic potential against West Nile virus

    Theodore Oliphant1, Michael Engle2, Grant E Nybakken3, Chris Doane2, Syd Johnson4, Ling Huang4, Sergey Gorlatov4, Erin Mehlhop3, Anantha Marri2, Kyung Min Chung2, Gregory D Ebel5, Laura D Kramer5, Daved H Fremont3 & Michael S Diamond1, 2, 3

    1 Department of Molecular Microbiology, Washington University School of Medicine, 660 South Euclid Avenue, Box 8051, St. Louis, Missouri 63110, USA.

    2 Department of Medicine, Washington University School of Medicine, 660 South Euclid Avenue, Box 8051, St. Louis, Missouri 63110, USA.

    3 Department of Pathology & Immunology, Washington University School of Medicine, 660 South Euclid Avenue, Box 8051, St. Louis, Missouri 63110, USA.

    4 MacroGenics, 1500 East Guide Drive, Rockville, Maryland 20850, USA.

    5 Wadsworth Center, New York State Department of Health, 5668 State Farm Road, Slingerlands, New York 12159, USA.

    Neutralization of West Nile virus (WNV) in vivo correlates with the development of an antibody response against the viral envelope (E) protein. Using random mutagenesis and yeast surface display, we defined individual contact residues of 14 newly generated monoclonal antibodies against domain III of the WNV E protein. Monoclonal antibodies that strongly neutralized WNV localized to a surface patch on the lateral face of domain III. Convalescent antibodies from individuals who had recovered from WNV infection also detected this epitope. One monoclonal antibody, E16, neutralized 10 different strains in vitro, and showed therapeutic efficacy in mice, even when administered as a single dose 5 d after infection. A humanized version of E16 was generated that retained antigen specificity, avidity and neutralizing activity. In postexposure therapeutic trials in mice, a single dose of humanized E16 protected mice against WNV-induced mortality, and may therefore be a viable treatment option against WNV infection in humans.

    At present, there is no human vaccine available for WNV, although research has shown that the body can mount a successful immune response with antibodies that neutralize viral infection. In an effort to explore the potential of monoclonal antibodies as anti-WNV therapeutics, Michael Diamond of the Washington University School of Medicine (St. Louis, MO) and his colleagues immunized mice with recombinant viral envelope protein, which is generally known to be a primary target for immune recognition. They generated nearly 50 different monoclonal lines, a dozen of which proved capable of neutralizing WNV more effectively than human polyclonal antisera (Nat. Med., May).

    One of the most effective antibodies, E16, was capable of blocking infection of several different mouse and human cell lines by several different WNV strains; at the same time, the antibody was specific enough not to neutralize closely related, non-WNV viruses. The antibody proved equally effective in mice; for mice that had been injected 2 days after infection with E16, the survival rate rose from 10% to >90%. E16 even offered protection when injected several days later, when infection had progressed to the central nervous system. Increased doses of E16 given 5 days after infection still conferred 90% survival rates, and 9 days later all virus had been cleared from the brains of 68% of the treated mice.

    Diamond's team has also developed a 'humanized' version of E16, which is equally effective in mice but may prove more effective for human patients. "Our results are the first successful demonstration of a humanized monoclonal antibody as postexposure therapy against a viral disease," the authors write, "and suggest that antibody-based therapeutics may have more broad utility than previously appreciated."

    Ondanks de euforie, dus maar afwachten wie het eerder geoctrooieerd hebben. De Amerikanen of Crucell. Daar zullen we nog zo'n 17 maanden op moeten wachten. Dan iis de vraag wie het eerder op de markt krijgt.
  2. [verwijderd] 10 juni 2005 15:57
    MARKET TALK: Crucell nieuws West-Nijlvaccin positief

    vrijdag 10 juni 2005 15:30

    AMSTERDAM (Dow Jones)--Crucell stijgt 5,3% tot EUR 17,15 na aankondiging van ontdekking antistof en status ontwikkeling vaccin West-Nijlvirus. Analist SNS Securities vindt nieuws positief. Geen informatie over financiele impact, maar SNS vindt feit dat Crucell progressie boekt met West-Nijlvaccin positief. Hanteert hold-advies, koersdoel EUR 12,50. (RVD)

    Zullen we de SNS gelijk maar even mailen dat er nog meer groepen onderzoek doen naar deze antistof? Anders komen ze er over een jaar weer mee aan dat Crucell niet de eerste is.
  3. [verwijderd] 10 juni 2005 16:18
    Stinkt-Naar-Stront/ SNS handhaaft holdadvies op...12.50..! wat een waaghalzen..!
    gr
    janh

    quote:

    Roberto Ce schreef:

    [quote=babs11]
    MARKET TALK: Crucell nieuws West-Nijlvaccin positief

    vrijdag 10 juni 2005 15:30

    AMSTERDAM (Dow Jones)-- SNS vindt feit dat Crucell progressie boekt met West-Nijlvaccin positief. Hanteert hold-advies, koersdoel EUR 12,50. (RVD)

    [/quote]

    Vooral koersdoel handhaven SNS. :-/
  4. Huppeldepepup 10 juni 2005 16:22
    quote:

    babs11 schreef:

    MARKET TALK: Crucell nieuws West-Nijlvaccin positief

    vrijdag 10 juni 2005 15:30

    AMSTERDAM (Dow Jones)--Crucell stijgt 5,3% tot EUR 17,15 na aankondiging van ontdekking antistof en status ontwikkeling vaccin West-Nijlvirus. Analist SNS Securities vindt nieuws positief. Geen informatie over financiele impact, maar SNS vindt feit dat Crucell progressie boekt met West-Nijlvaccin positief. Hanteert hold-advies, koersdoel EUR 12,50. (RVD)

    Zullen we de SNS gelijk maar even mailen dat er nog meer groepen onderzoek doen naar deze antistof? Anders komen ze er over een jaar weer mee aan dat Crucell niet de eerste is.

    Wat een randdebielen. Hoe kan je nou een hold-advies geven, als je verwacht dat de koers 25% gaat dalen. Je zou in paniek al je klanten moeten bellen om ze aan te raden meteen en bestens te verkopen. Complete paniek.
  5. [verwijderd] 10 juni 2005 16:54
    quote:

    Mr Greenspan schreef:

    Misschien een stomme vraag, maar is het niet een beetje dubbel op om zowel een vaccin als een antistof te ontwikkelen? Als je een goedwerkend vaccin hebt (en iedereen daar mee ingeend wordt) wordt een antistof toch overbodig? Het bestaan van een antistof zal de vraag naar vaccin misschien doen afnemen. Een antistof ontwikkelen waar nog geen vaccin voor bestaat/in ontwikkeling is, zal toch een stuk interessanter zijn of niet?
    www.wallstreetweb.nl/nieuwsmv/581862....

    De antistof vormt een goede aanvulling op Crucells ontwikkelingsprogramma voor een vaccin tegen het West-Nijlvirus, in het kader waarvan klinisch onderzoek nog voor het eind van 2005 van start zal gaan.

    Terwijl het vaccin bedoeld is om infectie te voorkomen bij ouderen, die het grootste risico lopen om de meest ernstige vorm van de ziekte te krijgen, kan de antistof worden gebruikt bij mensen die al besmet zijn, om te voorkomen dat bij hen een mogelijk dodelijke hersenvliesontsteking optreedt.
  6. Mr Greenspan 10 juni 2005 17:15
    quote:

    Biocon schreef:

    Is geen stomme vraag. Zie ook mijn opmerking in BioStefans draadje.

    Een vaccin is actieve vaccinatie waarbij het een tijdje kan duren voordat er weerstand is opgebouwd.
    Antilichamen kunnen na toediening eventueel direct bescherming bieden en daarom zouden de doelgroepen wel eens anders kunnen zijn.

    Een andere mogelijkheid is dat het WNV vaccin met name T cel immuniteit oproept, terwijl antilichamen door de B cellen worden gemaakt. Op die manier zouden ze complementair werken.
    Thanks, nu maar hopen dat het project voorspoedig verloopt.
    Een prettig weekend zit er in ieder geval wel in.
  7. Mr Greenspan 10 juni 2005 17:48
    Volgens Crucell zou deze antistof enkele keren de omzet van Rabies (100 miljoen potentiele omzet) bedragen, zo beloofden ze bij de conference call, ik ben benieuwd hoeveel dat zal gaan bedragen.
    Gezien de flinke koersstijging werd er blijkbaar met de geplande bekendmaking van een antistof met een andere antistof rekening gehouden, welk waren dat eigenlijk?

  8. bv.tanden 13 juni 2005 18:00
    www.financialnewsusa.com/release.php?...

    Crucell Antibody Fights West Nile Virus and Gilead to Present at Goldman Sachs Global Health Conference


    City of Industry, CA --(www.FinancialNewsUSA.com)-- 06/13/2005 - Biotechnology industry news provide by Financial News USA (OTC: FNWU). Dutch biotechnology company Crucell N.V. (Nasdaq: CRXL) recently announces the discovery of a monoclonal antibody for protection against West Nile virus. Study results have demonstrated that the fully human monoclonal antibody, derived from patients who survived West Nile infection, effectively neutralized the virus in cell culture and fully protected mice from an otherwise lethal infection. Teva Neuroscience Inc., a U.S. unit of Israeli drug maker Teva Pharmaceutical Industries Ltd., (TEVA)said Thursday that multiple sclerosis patients given Copaxone relapsed less at 24 months than patients given beta interferons.

    U.S. BioDefense, Inc. (OTCBB: UBDE) announces that its CEO, David Chin has received the prestigious ``Governor's Veterans Employer of the Year Award'' for dedication to U.S. Veterans from Arnold Schwarzenegger. The award was presented at the California Employer Advisory Council Conference Veterans Awards Luncheon. Gilead Sciences, Inc. (Nasdaq: GILD) announced today that it will be webcasting a presentation on the company from the Goldman Sachs 26th Annual Global Healthcare Conference in Dana Point, California. This webcast may be accessed via the company's corporate website at www.gilead.com.

    About Financial News USA

    Financial News USA is a Next Generation Financial Communications firm focused on the distribution of market moving news. Financial News USA has developed leading edge e-publishing tools including programming proprietary RSS feeds and enabling open source press release publishing across its network. Financial News USA has been aggressively expanding its news distribution network by targeting direct feeds to financial news and data providers such as FinancialContent, Yahoo (NASDAQ: YHOO), among others. Financial News USA offers a free news feed available online (www.financialnewsusa.com) to websites and financial services looking for content and for individual investors looking to stay informed on the financial markets. Financial News USA and its affiliates charge each client cash for news distribution and may take an equity position in the companies mentioned herein, please visit the disclaimer at www.financialnewsusa.com


    Contact Information:
    Financial News USA
    Tel: (626) 961-8041
    Email: info@financialnewsusa.com
  9. [verwijderd] 13 juni 2005 18:34
    quote:

    dont f me schreef:

    www.financialnewsusa.com/release.php?...

    Crucell Antibody Fights West Nile Virus and Gilead to Present at Goldman Sachs Global Health Conference


    City of Industry, CA --(www.FinancialNewsUSA.com)-- 06/13/2005 - Biotechnology industry news provide by Financial News USA (OTC: FNWU). Dutch biotechnology company Crucell N.V. (Nasdaq: CRXL) recently announces the discovery of a monoclonal antibody for protection against West Nile virus. Study results have demonstrated that the fully human monoclonal antibody, derived from patients who survived West Nile infection, effectively neutralized the virus in cell culture and fully protected mice from an otherwise lethal infection. Teva Neuroscience Inc., a U.S. unit of Israeli drug maker Teva Pharmaceutical Industries Ltd., (TEVA)said Thursday that multiple sclerosis patients given Copaxone relapsed less at 24 months than patients given beta interferons.

    U.S. BioDefense, Inc. (OTCBB: UBDE) announces that its CEO, David Chin has received the prestigious ``Governor's Veterans Employer of the Year Award'' for dedication to U.S. Veterans from Arnold Schwarzenegger. The award was presented at the California Employer Advisory Council Conference Veterans Awards Luncheon. Gilead Sciences, Inc. (Nasdaq: GILD) announced today that it will be webcasting a presentation on the company from the Goldman Sachs 26th Annual Global Healthcare Conference in Dana Point, California. This webcast may be accessed via the company's corporate website at www.gilead.com.

    About Financial News USA

    Financial News USA is a Next Generation Financial Communications firm focused on the distribution of market moving news. Financial News USA has developed leading edge e-publishing tools including programming proprietary RSS feeds and enabling open source press release publishing across its network. Financial News USA has been aggressively expanding its news distribution network by targeting direct feeds to financial news and data providers such as FinancialContent, Yahoo (NASDAQ: YHOO), among others. Financial News USA offers a free news feed available online (www.financialnewsusa.com) to websites and financial services looking for content and for individual investors looking to stay informed on the financial markets. Financial News USA and its affiliates charge each client cash for news distribution and may take an equity position in the companies mentioned herein, please visit the disclaimer at www.financialnewsusa.com


    Contact Information:
    Financial News USA
    Tel: (626) 961-8041
    Email: info@financialnewsusa.com

    Mis ik hier iets:

    Zoals ik dit lees mbt Crucell WNV nieuws van vrijdag.
    En Gilead to present at Goldman Sachs Global Health Conference.
    En een stukje over Teva's Copaxone.

    gr.
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