Multi parameter in vitro testing of ratjadone using flow cytometry

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OriginalspracheEnglisch
Seiten (von - bis)174-179
Seitenumfang6
FachzeitschriftApplied Microbiology and Biotechnology
Jahrgang62
Ausgabenummer2-3
PublikationsstatusVeröffentlicht - 4 Apr. 2003

Abstract

Ratjadone, isolated from the myxobacterium Sorangium cellulosum, belongs to the family of so-called orphan ligands, which includes leptomycin, callystatin and other compounds. In previous screening tests, ratjadone revealed a growth inhibitory effect against bacteria, yeast and human cancer cells. Following these first results, ratjadone was tested on several human tumour cell lines (Jurkat, HepG2, U87-MG) and, as a control, on a non-tumour cell line (RLC18) for its mode of action. The cell analysis was carried out by flow cytometry. This comprised cell density measurements, live-dead analysis, cell-cycle analysis and detection of apoptosis. First experiments confirmed the growth inhibitory effect on any chosen tumour cell line. Following these results a dose effect relationship was monitored, confirming the high effectiveness of ratjadone against cell growth at nanomolar concentration. Cell cycle analysis has shown that ratjadone intervenes in the cell cycle by arresting the cells in G1-phase. Biological testing of additional ratjadone derivatives with changed configuration and stereochemistry, identified the pharmacophoric site of the molecule.

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Multi parameter in vitro testing of ratjadone using flow cytometry. / Burzlaff, A.; Kalesse, M.; Kasper, C. et al.
in: Applied Microbiology and Biotechnology, Jahrgang 62, Nr. 2-3, 04.04.2003, S. 174-179.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Burzlaff A, Kalesse M, Kasper C, Scheper T. Multi parameter in vitro testing of ratjadone using flow cytometry. Applied Microbiology and Biotechnology. 2003 Apr 4;62(2-3):174-179. doi: 10.1007/s00253-003-1300-0
Burzlaff, A. ; Kalesse, M. ; Kasper, C. et al. / Multi parameter in vitro testing of ratjadone using flow cytometry. in: Applied Microbiology and Biotechnology. 2003 ; Jahrgang 62, Nr. 2-3. S. 174-179.
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AU - Kalesse, M.

AU - Kasper, C.

AU - Scheper, T.

N1 - Funding information: Acknowledgement Part of this work was performed with the support of the Deutsche Forschungsgemeinschaft.

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