Details
| Original language | English |
|---|---|
| Pages (from-to) | 174-179 |
| Number of pages | 6 |
| Journal | Applied Microbiology and Biotechnology |
| Volume | 62 |
| Issue number | 2-3 |
| Publication status | Published - 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.
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Biotechnology
- Immunology and Microbiology(all)
- Applied Microbiology and Biotechnology
Sustainable Development Goals
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In: Applied Microbiology and Biotechnology, Vol. 62, No. 2-3, 04.04.2003, p. 174-179.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Multi parameter in vitro testing of ratjadone using flow cytometry
AU - Burzlaff, A.
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.
PY - 2003/4/4
Y1 - 2003/4/4
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0042663886&partnerID=8YFLogxK
U2 - 10.1007/s00253-003-1300-0
DO - 10.1007/s00253-003-1300-0
M3 - Article
C2 - 12679852
AN - SCOPUS:0042663886
VL - 62
SP - 174
EP - 179
JO - Applied Microbiology and Biotechnology
JF - Applied Microbiology and Biotechnology
SN - 0175-7598
IS - 2-3
ER -