Vorträge
Schachtsiek, J. CRISPR-Cas9 mediated cannabinoid profile in Cannabis sativa. Plant Science Student Conference, Leibniz-Institut für Pflanzenbiochemie, Halle (Saale), Germany, 06.06.2017
Kayser, O. Molecular insights into the biosynthesis of cannabinoids. 17th Annual Oxford ICSB, Oxford, Mississippi, USA, 03. - 06.04.2017
Kayser, O. To be or not to be - the role of endophytes for plant fitness. King Saud University, Riyad, Saudi Arabia, 05.10.2016
Kayser, O. Natural product biotechnology - rethinking secondary natural product pathways from biosynthesis to heterologous production. SABINA Conference, Kruger National Park, South Africa, 28.08. - 01.09.2016
Kayser, O. Biosynthesis of Tetrahydrocannabinolic acid - from biotransformation studies to biotechnological production. Deutsche Biotechnologietage, Leipzig, Germany, 26. - 27.04.2016
Kayser, O. Ion mobility spectrometry as new analytical tool for detection of cannabis consumption in exhaled breath. Cannabis & Science, Conference on Medicinal Cannabis, Brno, Czech Republic, 18.4.2016
Kayser, O., Vautz, W., Hariharan, C. (2015) Ion mobility spectrometry for detection of Cannabis sativa L. metabolites from exhaled breath. International Congress and Annual Meeting of the Society for Medicinal Plant and Natural Product Research (GA), Budapest, Hungary, 23.8. - 27.8.2015
Kusari, P., Kusari, S., Spiteller, M., Kayser, O. (2015) Endophytes harbored in Cannabis sativa L. are experts in antivirulence. Tag der Chemie, Dortmund, Germany, 13.2.2015
Kayser, O. (2014) Quenching of quorum coordination by potent endophytic bacteria harbored in Cannabis sativa L. 62nd International Congress and Annual Meeting of the Society for Medicinal Plant and Natural Product Research (GA), Guimaraes, Portugal, 31.8. - 4.9.2014
Happyana, N., Kayser, O. (2014) 1H NMR-based metabolomics and cannabinoids analysis of medicinal Cannabis trichomes during flowering period. 29th International Horticultural Congress, Brisbane, Australia, 17.8. - 22.8.2014
Kayser, O. (2014) Green Pharma - Ecoeficient production of secondary natural products in plants and microorganisms. Ringvorlesung Bioökonomie Wissenschaftscampus, Halle, Germany, 10.6.2014
Kayser, O. (2014) Ionenmobilitätsspektrometrie zur Detektion von Drogen in der Atemluft. 2. Forschungs- und Technologiesymposium der Polizei, Münster, Germany, 4. - 5.6.2014
Kayser, O. (2014) Bioengineering and biocatalyst design for the production of recombinant Delta9-Tetrahydrocannabinolic acid (THCA). 2nd International Meeting on Natural Products, Phuket, Thailand, 6.5. - 8.5.2014
Gruchattka, E. (2014) Towards a platform organism for terpenoid production - in silico analysis of central pathways of Saccharomyces cerevisiae for pathway optimization. 5th Annual ClIB-Graduate Cluster Retreat, Lünen, Germany, 12.2. - 14.2.2014
Kayser, O. (2013) Nanosuspensions and Solid Lipid Nanopaarticles as an attractive formulation principles for cosmetics. 2nd International Conference on Nutraceutical and Cosmetic Sciences (ICNaCS), Jarkata, Indonesia, 23.10. - 24.10.2013
Kayser, O. (2013) Biosynthesis of Delta9-tetrahydrocannabinolic acid - from biotransformation studies in Cannabis sativa L. to biotechnological production in S. cerevisiae. Eurobiotech 2013, 5th Central European Conference on Life Sciences, Cracow, Poland, 8.10. - 11.10. 2013
Kayser, O. (2013) Bioengineering and biocatalyst design for the production of recombinant Delta9-Tetrahydrocannabinolic acid (THCA). Annal Meeting of the Polish Pharmaceutical Society, Bialystok, Poland, 18.9. - 21.9.2013
Kusari, P., Kusari, S., Spiteller, M., Kayser, O. (2013) Biochemical fingerprinting of endophytes harbored in Radula marginata that confer plant fitness benefits. 61st International Congress and Annual Meeting of the Society for Medicinal Plant and Natural Product Research (GA), Münster, Germany, 1.9. - 5.9.2013
Happyana, N., Kayser, O. (2013) Monitoring metabolites production and cannabinoids analysis in medicinal Cannabis trichomes during flowering period by 1H NMR-based metabolomics. 61st International Congress and Annual Meeting of the Society for Medicinal Plant and Natural Product Research (GA), Münster, Germany, 1.9. - 5.9.2013
Gruchattka, E. (2013) Towards a platform organism for terpenoid production - in silico analysis of central pathways of Saccharomyces cerevisiae for pathway optimization, 4th European Yeast Flavour Workshop Conference: Biotechnology for Natural Flavour Production, Freising, Germany, 22.7. - 23.7.2013
Kusari, P., Lamshöft, M., Kusari, S., Spiteller, M., Kayser, O. (2013) Profiling of quorum sensing response and biocontrol potential of endophytic bacteria harbored in Cannabis sativa L. Annual Conference of the Association for General and Applied Microbiology (VAAM), Bremen, Germany 10.3. - 13.3.2013
Kusari, P., Kayser O. (2013) Biodiversity of endophytes harbored in Cannabis sativa L. and their biocontrol strategies employed against host-specific phytopahtogens. Fourth Annual Retreat of the CLIB-Graduate Cluster, Lünen, Germany, 13.2. - 15.2.2013
Kayser, O. (2012) Time dependent metabolomics and transcriptional analysis of cannabinoid biosynthesis in Cannabis sativa var. Bedrobinol and Bediol grown under standardized condition and with genetic homogeneity. 1st Polish-German Biochemical Societies Joint Meeting, Poznan, Poland, 11.9. - 14.9.2012
Kayser, O. (2011) Biosynthese der Delta9-Tetrahydrocannabinolsäure und molekularbiologische Ansätze ihrer biotechnologischen Herstellung. Vortrag auf Einladung der Fakultät Chemie, Technische Universität Darmstadt, Germany, Dezember 2011
Kayser, O. (2011) Extraktion und Charakterisierung pharmazeutisch relevanter ethanolfreier Extrakte am Beispiel von Pelargonium sidoides DC. ProcessNet, Fulda, Germany, September 2011
Kayser, O. (2011) DHAA-Activity. 59th International Congress and Annual Meeting of the Society for Medicinal Plant and Natural Product Research (GA), Antalya, Turkey, 4.9.2011
Kayser, O. (2011) Metabolic engineering strategies for the optimization of medicinal and aromatic plants: expectations and realities. 2nd International Conference on Pharmacy and Advanced Pharmaceutical Science, Yogjakarta, Indonesia, July 2011
Kayser, O. (2010) Phytoöstrogene - ihre Chemie, Biochemie und Wirkung im Menschen. Wirkstoffseminar Phytoöstrogene, Universität Rostock, Germany, Dezember 2010
Kayser, O. (2008) Metabolic engineering of the artemisinin pathway. Technische Universität Darmstadt, Fachbereich Biologie, 7.2.2008
Kayser, O. (2008) Bioconversion of deoxypodophyllotoxin into epipodophyllotoxin in E. coli using human cytochrome P450 3A4. 7th Joint Meeting of AFERP, ASP, GA, PSE & SIF, Athens, 3.8-8.8.2008
Kayser, O. (2007) Combinatorial biosynthesis of artemisinin and its precursors. Irseer Naturstofftage, 21.2. - 23.2.2007, DECHEMA Tagung
Kayser, O. (2006) Jatropha curcas – Review of Pharamceutical Use and Current Status. International Seminar on Valorisation of Jatropha curcas as Sustainable Resources for Biofuel and Non-Energy-Utilisation, Jakarta, Indonesien, 20.11. – 21.11.2006
Kayser, O. (2005) Combinatorial Biosynthesis of Podophyllotoxin and Arteminisic Acid. Wageningen Universität, Wageningen, Niederlande, 7.11.2005
Kayser, O. (2005) Combinatorial Biosynthesis of Epi-Podophyllotoxin. Combinatorial Biosynthesis of Natural Products. 57th Indian Pharmaceutical Congress, Hyderabad, Indien, 2.12.-4.12.2005
Kayser, O. (2004) Aurones – phytochemical profile and antiparasitic activity. Vortrag auf Einladung des Berufungskommission (Assistant Prof. Pharmaceutical Biology) des Fachbereiches Pharmazie der Rijksunversiteit Groningen, 24.2.2004
Kayser, O. (2004) The antiparasitic potential of aurones Vortrag auf Einladung von Prof. Dr. A. Boumendjel, University of Grenoble, Faculty of Pharmacy, Grenoble, Frankreich, 5.3.2004
Kayser, O. (2004) Chemische und physikalische Vektoren in der somatischen Gentherapie. Auf Einladung der DPHG-Landesgruppe Berlin/Brandenburg, Berlin, 27.5.2004
Kayser, O. (2004) Drug Action and Drug Formulation of Antiparasitic Aurones - Focus on Recent Advancements. 14. Deutsch-Japanisches Protozoologie-Symposium, Düsseldorf, 20.9. -23.9.2004
Kayser, O., Kiderlen, A. F., Copp, B., Brun, R., Kolodziej, H. (2003) Antiparasitic activity of marine pyridoacridone Alkaloids. Jahrestagung der Deutschen Pharmazeutischen Gesellschaft, 08.10. - 11.10.2003, Würzburg, Abstract V B-2, Archiv der Pharmazie Pharmaceutical and Medicinal Chemistry
Kayser, O. (2002) In vitro and in vivo activity of synthetic aurones against Leishmania donovani. 20. Jahrestagung der Deutschen Parasitologischen Gesellschaft, Travemünde, 20.3. - 23.3.2002
Kayser, O. (2002) Drug Action and Drug Formulation of Antiparasitic Aurones - Focus on Recent Advancements. 13. Deutsch-Japanisches Protozoologie-Symposium, Nagasaki, Japan, 4.10. - 8.10.2002
Kayser, O. (2002) Aurones as new drug leads against AIDS-associated opportunistic parasitic diseases. Vortrag auf Einladung von Prof. Dr. D. Staerk, Royal Danish School of Pharmacy, Kopenhagen, Dänemark, 29.5.2002
Kayser, O. (2002) Formulation of amphotericin B as nanosuspension for oral administration. European Workshop on Particulate Systems, 29.5. - 1.6.2002, Kopenhagen, Dänemark
Kayser, O. (2001) Alte Arzneistoffe - Neue Arzneiformulierungen, Beiträge der Pharmazeutischen Technologie zur Optimierung antiparasitärer Wirkstoffe. 2. Experten-Meeting Chemotherapie der Deutschen Parasitologischen Gesellschaft, Zürich, 17.3.2001
Kayser, O. (2001) Erfassung toxikologischer Daten ausgewählter Pflanzen als Inhaltsstoffe kosmetischer Mittel. Vortrag vor der Kosmetikkommission (KoKo) des BgVV, Berlin, 15.5.2001
Kayser, O. (2001) 4,9-Naphthoquinoneazoles - a new drug lead against Cryptosporidium parvum and its formulation as mucoadhesive drug delivery system. Vortrag gegeben auf Einladung von Prof. Dr. Keithly, Wadsworth Center, Albany, USA, 29.6.2001
Kayser, O. (2001) Interference of aurones with mitochondrial and microsomal functions in L. donovani and P. carinii Jahrestagung der Deutschen Pharmazeutischen Gesellschaft, Halle (Saale), 10.10. – 13.10.2001
Kayser, O. (2001) Neue Erkenntnisse zu pflanzlichen Produkten als Inhaltsstoffe in Kosmetika. Bundesverband deutscher Industrie- und Handelsunternehmen für Arzneimittel, Reformwaren, Nahrungsergänzungsmittel und Körperpflegemittel (BDIH) -Veranstaltung „Aktuelle Themen aus der Kosmetik“, Vortrag auf Einladung beim BDIH, Mannheim,13.12.2001
Kayser, O. (2001) Aurone als Wirkstoffkandidaten gegen AIDS-assoziierte parasitäre Infektionserreger. Sektion Pharmazie der Christian-Albrechts-Universität zu Kiel, 28.11.2001
Kayser, O., Water, W. R., Keithly, J., Kiderlen, A. F. (2000) In vitro and in vivo activity of aurones and chalcones against Cryptococcus parvum. 19. Jahrestagung der Deutschen Parasitologischen Gesellschaft, Stuttgart, 28.3. - 31.3.2000
Kayser, O. (2000) Formulation of the natural product aphidicolin from biotechnological processes as nanosuspension. 3rd World Meeting of APV / APGI, Berlin, 2.4. - 6.4.2000
Kayser, O. (2000) Mucoadhesive nanosuspensions as a drug delivery system for gastrointestinal Cryptosporidium parvum infections. European Workshop on Particulate Systems, 27.4. - 29.4.2000, Utrecht, Niederlande
Kayser, O. (2000) 4,9-Naphthoquinoneazoles - eine neue antiparasitäre Wirkstoffklasse. Vortrag auf Einladung bei der Firma 4sc, 18.7.2000, München
Kayser, O. (2000) 4,9-Naphthoquinoneazoles - a new drug lead for antiparasitic therapy. 12. Deutsch-Japanisches Protozoologie-Symposium, 23.9. - 26.9.2000, Bonn, Deutschland
Kayser, O. (2000) Tannin-induced TNF-, IFN- and iNO-production in RAW-macrophages. 48. Jahrestagung der Gesellschaft für Arzneipflanzenforschung, Zürich, 3.9. - 8.9.2000
Kayser, O. (2000) Formulation of poorly soluble biotech drugs for human use. Biotechnology 2000 - The World Congress on Biotechnology, 3.9. - 8.9.2000, Berlin, Deutschland
Kayser, O. (1999) Neue leishmanizide Diterpene und die Entwicklung neuer Drug Targeting Strategien für die Therapie von Leishmanieninfektionen. Vortrag vor dem Fachbereich Biologie, Chemie, Pharmazie der FU Berlin, Berlin, 24.2.1999
Kayser, O. (1999) Aurones and related phenolic natural products as novel antiparasitic lead structures and development of nanosuspensions as a potential drug delivery system for targeting Leishmania infected macrophages. Vortrag gegeben auf Einladung von Prof. Dr. Keithly, Wadsworth Center, Albany, USA, 15.06.1999
Kayser, O., Kiderlen, A. F., Laatsch, H. (1998) In vitro activity of synthetic naphtoquinones against different Leishmania spp. 18. Jahrestagung der Deutschen Parasitologischen Gesellschaft, Dresden, 24.3. - 28.3.1998
Kayser, O., Kiderlen, A. F., Siems, K. (1998) Novel antiparasitic diterpenoids and development of a potential drug delivery system for targeting Leishmania infected macrophages. IX. International Congress on Parasitology, ICOPA IX, Chiba, Japan, 22.8. - 28.8.1998
Kayser, O., Kiderlen, A. F. (1998) Novel leishmanicidal aurones. 11. Deutsch-Japanisches Protozoologisches Symposium, Kisehara, Japan, 29.8. - 30.8.1998
Kayser, O. (1998) The current status and new developments of leishmanicide chemotherapy. Vortrag gegeben auf Einladung von Prof. Dr. Abreu, New University of Lisbon, Lissabon, Portugal, 7.10.1998
Kayser, O., Kiderlen, A. F., Kolodziej, H. (1997) Role of gallic acid and its derivatives in immun-stimulating processes. 1st European Conference on Immunopharmacology, Berlin, 26.5. - 29.5. 1997
Kayser, O., Kiderlen, A. F., Kolodziej, H. (1997) Role of gallic acid and its related phenols in immunostimulating responses. 45. Jahrestagung der Gesellschaft für Arzneipflanzenforschung, Regensburg, 7.9. - 12.9.1997