mercoledì 22 maggio 2013

VACCINO ANTINFLUENZALE

VACCINI: trOvato un piu' rapido metodo di produzione del vaccino antinfluenzale. sara' utile in caso di necessita' di fronte ad una eventuale paNDEMIA.


Synthetic Generation of Influenza Vaccine Viruses for 


Rapid Response to Pandemics

  1. J. Craig Venter2,3,4

  1. 1Novartis Vaccines and Diagnostics, Cambridge, MA 02139, USA.
  2. 2The J. Craig Venter Institute, Rockville, MD 20850, USA.
  3. 3The J. Craig Venter Institute, San Diego, CA 92121, USA.
  4. 4Synthetic Genomics Inc., La Jolla, CA 92037, USA.
  5. 5Biomedical Advanced Research and Development Authority, U.S. Department of Health and Human Services, Washington, DC 20201, USA.
  6. 6Institut für Virologie, Philipps-Universität Marburg, D-35032 Marburg, Germany.
  7. 7Novartis Vaccines and Diagnostics, 53100 Siena, Italy.
  8. 8Novartis Vaccines and Diagnostics, Holly Springs, NC 25740, USA.

  •  Present address: Division of Microbiology and Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, MD 20892, USA.
  1. *Corresponding author. E-mail: philip.dormitzer@novartis.com

Abstract

During the 2009 H1N1 influenza pandemic, vaccines for the virus became available in large quantities only after human infections peaked. To accelerate vaccine availability for future pandemics, we developed a synthetic approach that very rapidly generated vaccine viruses from sequence data. Beginning with hemagglutinin (HA) and neuraminidase (NA) gene sequences, we combined an enzymatic, cell-free gene assembly technique with enzymatic error correction to allow rapid, accurate gene synthesis. We then used these synthetic HA and NA genes to transfect Madin-Darby canine kidney (MDCK) cells that were qualified for vaccine manufacture with viral RNA expression constructs encoding HA and NA and plasmid DNAs encoding viral backbone genes. Viruses for use in vaccines were rescued from these MDCK cells. We performed this rescue with improved vaccine virus backbones, increasing the yield of the essential vaccine antigen, HA. Generation of synthetic vaccine seeds, together with more efficient vaccine release assays, would accelerate responses to influenza pandemics through a system of instantaneous electronic data exchange followed by real-time, geographically dispersed vaccine production.

Citation: P. R. Dormitzer, P. Suphaphiphat, D. G. Gibson, D. E. Wentworth, T. B. Stockwell, M. A. Algire, N. Alperovich, M. Barro, D. M. Brown, S. Craig, B. M. Dattilo, E. A. Denisova, I. D. Souza, M. Eickmann, V. G. Dugan, A. Ferrari, R. C. Gomila, L. Han, C. Judge, S. Mane, M. Matrosovich, C. Merryman, G. Palladino, G. A. Palmer, T. Spencer, T. Strecker, H. Trusheim, J. Uhlendorff, Y. Wen, A. C. Yee, J. Zaveri, B. Zhou, S. Becker, A. Donabedian, P. W. Mason, J. I. Glass, R. Rappuoli, J. C. Venter, Synthetic Generation of Influenza Vaccine Viruses for Rapid Response to Pandemics. Sci. Transl. Med. 5185ra68 (2013).