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Engineering Conferences International

Bioprocess Development in Early Stages

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Full-Text Articles in Biomedical Engineering and Bioengineering

Development Of Recombinant Protein Based Chemical Conjugate Malaria Vaccines Targeting The Pre-Erythrocytic Stage, Transmission Blocking, Or Both, David L. Narum, Nicholas Macdonald, David Jones, Ruth Ellis, Yimin Wu, Patrick E. Duffy Jun 2010

Development Of Recombinant Protein Based Chemical Conjugate Malaria Vaccines Targeting The Pre-Erythrocytic Stage, Transmission Blocking, Or Both, David L. Narum, Nicholas Macdonald, David Jones, Ruth Ellis, Yimin Wu, Patrick E. Duffy

Vaccine Technology III

The development of a Plasmodium falciparum malaria vaccine is critical for future control and elimination programs. Recombinant protein based chemical conjugate vaccines, covering different parasite stages, are being developed due to complexity of the parasite and sub-optimal immunogenicity of recombinant malaria proteins in humans, respectively. Chemical conjugation of recombinant malaria proteins to carrier proteins improves their immunogenicity in animal studies. A transmission blocking vaccine comprised of the ookinete protein Pfs25 chemically conjugated to Pseudomonas aeruginosa ExoProtein A (EPA) is currently being developed for pilot scale cGMP production. Bulk lots of Pfs25 and EPA have already been produced and released following …


Influence Of Host Cell Defence During Influenza Vaccine Production In Mdck Cells, Timo Frensing, Claudius Seitz, Bjoern Heynischotto-Von-Guericke, Udo Reichl Jun 2010

Influence Of Host Cell Defence During Influenza Vaccine Production In Mdck Cells, Timo Frensing, Claudius Seitz, Bjoern Heynischotto-Von-Guericke, Udo Reichl

Vaccine Technology III

For cell culture-based influenza vaccine production virus yield optimisation is of crucial importance. In particular, with the recent threat of the new H1N1 pandemic, not only seasonal vaccines but also pre-/pandemic vaccines have to be supplied in large quantities. In vivo influenza replication is limited by the immune system, but for production cell lines the impact of cellular defence mechanisms on virus yield is unknown. In influenza-infected adherent Madin-Darby canine kidney (MDCK) cells the interferon (IFN) response and subsequent induction of the antiviral state was monitored. Virus yield and host cell signalling intensity were strain-dependent. By over-expression of viral antagonists …


Development Of Inactivated Polio Vaccine From Attenuated Sabin Strains For Clinical Studies And Technology-Transfer Purposes, Yvonne E. Thomassen, Wilfried A.M. Bakker, Janny Westdijk, Aart G. Van ‘T Oever, Nico Van Den Heuvel, Jan Hendriks, Gideon F.A. Kersten, Leo A. Van Der Pol Jun 2010

Development Of Inactivated Polio Vaccine From Attenuated Sabin Strains For Clinical Studies And Technology-Transfer Purposes, Yvonne E. Thomassen, Wilfried A.M. Bakker, Janny Westdijk, Aart G. Van ‘T Oever, Nico Van Den Heuvel, Jan Hendriks, Gideon F.A. Kersten, Leo A. Van Der Pol

Vaccine Technology III

Recently, responding to WHO’s call for new polio vaccines, the development of Sabin-IPV (injectable, formalin-Inactivated Polio Vaccine, based on attenuated ‘Sabin’ polio virus strains) was initated at NVI. This activity plays an important role in the WHO polio eradication strategy. The use of Sabin instead of wild-type Salk polio strains will provide additional safety during vaccine production. Initially, the Sabin-IPV production process will be based on the scale-down model of the current, and well-established, Salk-IPV process. In parallel, process development, optimization and formulation research is being carried out to further modernize the process and reduce cost per dose. The lab-scale …


Clinical Development Of Formulated Therapeutic And Prophylactic Dna-Based Vaccines, Alain Rolland Jun 2010

Clinical Development Of Formulated Therapeutic And Prophylactic Dna-Based Vaccines, Alain Rolland

Vaccine Technology III

Over the recent years, plasmid DNA vaccines have reached licensure against infectious hematopoietic necrosis virus in farmed salmon (Canada), West Nile virus in horses and metastatic melanoma in dogs (United States). A number of approaches are currently evaluated in clinical trials to enhance the potency of DNA vaccines in humans, including formulation of DNA with delivery systems and adjuvants as well as administration of DNA with devices. This presentation will report on the development of TransVaxTM, a poloxamer-formulated therapeutic DNA vaccine against human cytomegalovirus (CMV) in transplant patients. A vaccine that increases CMV-specific T-cell responses could reduce CMV reactivation after …