Min Shi Lee, J <strong>Vaccines</strong> Vaccin <strong>2013</strong>, 4:5http://dx.doi.org/10.4172/2157-7560.S1.0163 rd International Conference on<strong>Vaccines</strong> & VaccinationJuly 29-31, <strong>2013</strong> Embassy Suites Las Vegas, NV, USADevelopment of Vero cell-based influenza H5N1 vaccinesMin Shi LeeNational Health Research Institutes (NHRI), TaiwanCurrent egg-based influenza vaccine production technology is labor-intensive and lack of flexibility. Moreover, its capacitywould not be able to meet the demand during influenza pandemics. This was illustrated in the 2009 H1N1 pandemic whereonly 22% of expected doses were supplied within the first 6 months after the pandemic was declared. Therefore, cell-basedtechnology is becoming attractive for production of pandemic influenza vaccines. Two cell lines, MDCK and Vero cells arecurrently used for manufacturing human influenza vaccines. MDCK cells can only be used for manufacturing influenza vaccines.In contrast, Vero cells have been widely used for the production of human vaccines. The current WHO-recommended influenzaH5N1 clade-1 vaccine strain (NIBRG-14), a reassortant virus between A/Vietnam/1194/2004 (H5N1) virus and egg-adaptedhigh-growth A/PR/8/1934 virus, could grow efficiently in eggs and MDCK cells but not Vero cells. Therefore, we first adaptedthe egg-derived NIBRG-14 in Vero cells to become a Vero cell-adapted high-growth H5N1 vaccine virus (Vero-15), which couldreach high virus titer (>10 8 TCID50/ml) in Vero cells in multiple culture systems including T flasks, mirocarriers and TideCellcultures. Then, we established reverse genetics platform to generate high-growth reassortant H5N1 clade-2 viruses using theVero-15 virus as a master donor virus. In conclusion, the Vero-15 H5N1 vaccine virus has the commercial potential to become aseed virus for manufacturing H5N1 vaccines. In addition, the Vero-15 H5N1 vaccine virus could become a mater donor virus togenerate seed viruses for other influenza A subtypes.BiographyMin Shi Lee obtained his Ph.D. from Oxford University. He joined National Health Research Institutes as an Associate Investigator in 2005. Before that,he was Epidemiologist and scientist at MedImmune <strong>Vaccines</strong>, California, USA. He has won numerous awards, including National Innovation Award fromInstitute for Biotechnology and Medicine Industry and Outstanding Young Investigators Research Award from National Health Research Institute. Hisresearch interests include epidemiology of infectious diseases and development of influenza and enterovirus 71 vaccines. He has co-authored over 40original research articles and technology reports. Besides, he is a reviewer for several international journals.minshi@nhri.org.twJ <strong>Vaccines</strong> Vaccin <strong>2013</strong>ISSN: 2157-7560, JVV an open access journal<strong>Vaccines</strong>-<strong>2013</strong>July 29-31, <strong>2013</strong>Volume 4 Issue 5Page 70
Gisela Gonzalez, J <strong>Vaccines</strong> Vaccin <strong>2013</strong>, 4:5http://dx.doi.org/10.4172/2157-7560.S1.0163 rd International Conference on<strong>Vaccines</strong> & VaccinationJuly 29-31, <strong>2013</strong> Embassy Suites Las Vegas, NV, USAInnovations in advanced cancer therapy: Therapeutic vaccines for chronic treatmentsGisela GonzalezCenter of Molecular Immunology, CubaThe impact of biotechnology in cancer therapy has been given by its possibilities for generation of novel biological products,characterized by:• high specificity• low toxicity (compatible with good quality of life)• possibility of being used chronically• possibility of being used in combinationsThe clinical course of a neoplastic disease goes through different clinical stages. If the disease is diagnosed in an earlystage, the patient receives attack treatment consisting in surgery, chemotherapy and / or radiotherapy. Some patients may havea complete or partial remission, but others may have an initial response followed by a disease relapse or simply progressionafter attack treatments. In this moment, patients receive first and/or second line treatments for advanced disease. Again, someresponses can be expected, but relapse can occur and then patients are considered in ¨terminal disease¨ stage, with progressivedisease after receiving all available onco-specific drugs. The term ¨terminal disease¨, doesn´t mean that the patient will dieimmediately, but that there are no other available therapies for treatment of the tumor, mainly because onco-specific drugstoxicity impairs patient conditions.The issue is to keep this advanced cancer patient´s alive, with a good quality of life, by applying non toxic treatments thatcan be given chronically. This is a change in the paradigm of cancer therapy that could mean to convert advanced cancer ina chronic disease which cannot be cured, but controlled for long periods of time with good quality of life for the patients.Therapeutic vaccines are novel tools for treating advanced cancer chronically. They are non toxic and its expected clinical effect isto increase patient´s survival with a good quality of life. Several cancer vaccines are in clinical testing. Here we are going to referto CIMAvaxEGF, an EGF based cancer vaccine, designed to provoke specific anti-EGF antibodies that ¨castrate¨ circulating EGFavoiding its further binding to the EGF receptor, and then, the unchain of proliferation mechanisms derived from this ligand/receptor binding. During its clinical development, has been demonstrated its efficacy in improving survival in advanced nonsmallcell lung cancer patients, as well as a high safety profile. The feasibility of giving long term treatments with CIMAvaxEGFhas also been demonstrated, opening the possibility of treating advanced lung cancer as a chronic disease.giselagm2007@yahoo.comJ <strong>Vaccines</strong> Vaccin <strong>2013</strong>ISSN: 2157-7560, JVV an open access journal<strong>Vaccines</strong>-<strong>2013</strong>July 29-31, <strong>2013</strong>Volume 4 Issue 5Page 71
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